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"930628.DFC" (37068 bytes) was created on 06-28-93 28-Jun-93 Daily File Collection These files were added or updated between 27-Jun-93 at 21:00:00 {Central} and 28-Jun-93 at 21:00:18. =--=--=START=--=--= NASA Spacelink File Name:930628.REL 6/28/93: TOPEX POSEIDON MAPS PRECISE GLOBAL SEA LEVEL Brian Dunbar Headquarters, Washington, D.C. June 28, 1993 Mary A. Hardin Jet Propulsion Laboratory, Pasadena, Calif. RELEASE: 93-122 During the first 6 months of their mission, scientists using the U.S.- French TOPEX/Poseidon oceanographic satellite have recorded the most accurate measurements to date of global sea level changes. The data will be used by oceanographers to calibrate the computer models that help forecast future climate changes. "The changes in sea level we have observed during the first 6 months from October 1992 to March 1993 are a combination of the effects of seasonal warming and cooling as well as wind forcing," said Lee-Lueng Fu, TOPEX/Poseidon Project Scientist at NASA's Jet Propulsion Laboratory (JPL), Pasadena, Calif. In the Northern Hemisphere, the sea level in the Gulf Stream off the United States East Coast and the sea level in the Kuroshio regions east of Japan dropped by more than 12 inches (30 centimeters). Most of this drop was caused by the winter cooling of the ocean by the cold continental air mass blown off the North American and Asian continents, Fu said. In the Southern Hemisphere, a corresponding sea level rise occurred at similar latitudes which resulted from the warming of the summer atmosphere. "It takes an increase or decrease of 1 degree Celsius (1.8 degrees Fahrenheit) in the average temperature of a water column 50 meters (165 feet) deep to cause the sea level to rise or fall by 1 centimeter (0.4 inches)," Fu explained. The sea level change in the Northern Hemisphere is larger than that in the Southern Hemisphere because the larger land mass of the Northern Hemisphere creates colder continental air mass that cools the ocean water off the east coasts of North America and Asia. Seasonal changes in the trade winds caused a drop in sea level at the equator in both the Pacific and Atlantic oceans, Fu said. The rise in sea level in the eastern tropical Pacific Ocean off the coast of South America was the remnant of the Kelvin wave pulses that began in December 1992. A Kelvin wave pulse creates a surge of warm water that moves eastward along the equator and can contribute to El Nino conditions. In the Indian Ocean, reversing seascaused a fall in sea level in the eastern and southern regions and a rise in sea level in the northwestern region. JPL manages the NASA portion of the joint U.S.-French mission for NASA's Office of Mission to Planet Earth. Launched Aug. 10, 1992, the satellite is part of NASA's long-term effort to study Earth as a global environmental system. -end- Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61 =--=--=-END-=--=--= =--=--=START=--=--= NASA Spacelink File Name:930628.SHU KSC SHUTTLE STATUS 6-28-93 SPACE SHUTTLE STATUS REPORT Monday, June 28, 1993 Mitch Varnes Kennedy Space Center Public Information Office MISSION STS-57 Vehicle: Endeavour Mission: STS-57 Location: On-orbit Altitude: 256 x 208 nm Launched: June 21 @ 9:07 a.m. EDT Planned Landing: June 29 @ 8:44 a.m. EDT The crew of Endeavour is spending today packing experiments and flight gear and checking the orbiter's flight control systems in preparation for tomorrow's planned landing at the Kennedy Space Center. Landing is scheduled to occur at 8:44 a.m. EDT, with a second opportunity available at 10:24 a.m. Weather for tomorrow's landing in Florida is considered to be marginal but potentially acceptable. Concerns center around the chance of rain within 30 miles of the Shuttle runway and greater than 2/10ths of cloud coverage below 10,000 feet. A determination on whether or not to land at KSC will be made early tomorrow morn- ing. If managers choose to land at KSC on the first opportunity, the de-orbit burn would occur at 7:34 a.m. EDT. Should they choose the second opportunity, the burn would occur at 9:14 a.m. EDT. MISSION STS-51 Vehicle: OV-103/Discovery Mission: STS-51 Location: Pad 39-B Orbital Altitude: 184 sm Primary Payload: ACTS-TOS/ORFEUS-SPAS Inclination: 28.45 deg. Launch: NET July 17, 1993 Landing Site: KSC Mission Duration: 9 + 1 days Crew Size: 5 STS-51 IN-WORK - KSC Launch Readiness Review today - Vehicle powered-up - Foaming around main engines - Main engine flight readiness test - Argon servicing of ORFEUS-SPAS payloads inside orbiter STS-51 WORK SCHEDULED - ACTS-TOS Interface Verification Test on Tuesday - Astronauts to arrive at 7 p.m. today for Terminal Countdown Demonstration Test (TCDT) - TCDT countdown begins Wednesday at 8 a.m. and concludes at 11 a.m. on Thursday - STS-51 Flight Readiness Review on Thursday - Helium signature leak check of engines on Friday STS-51 WORK COMPLETED - Space Shuttle vehicle moved to launch pad on Saturday - Mechanical connections between Shuttle and pad established - STS-51 mission payloads installed on Sunday # # # # # Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61 =--=--=-END-=--=--= =--=--=START=--=--= NASA Spacelink File Name:930628.SKD DAILY NEWS/TV SKED 6-28-93 Daily News Monday, June 28, 1993 Two Independence Square; Washington, D.C. Audio Service:202/358-3014 % STS-57 mission update; % Payload processing team members prepare for STS-51 mission Mission Specialists David Low and Jeff Wisoff safely secured EURECA's dual antennas against the science satellite during the spacewalk performed last Friday. The five-hour , 50 minute spacewalk completed STS-57 mission's primary goal of retrieving the EURECA science satellite. Afterwards, Low and Wisoff completed maneuvers for an abbreviated extravehicular activity and then they both took turns using the robot arm. With the Endeavour's crew attention back to the host of experiments aboard the shuttle and in the Spacehab module, activities included work with crystal growth, spacecraft technology and biological experiments. Sunday, as the crew concluded a full work week in space, work continued on experiments in the Spacehab module and in the Shuttle's lower deck. These experiments included studying body posture, the spacecraft environment, crystal growth, metal alloys, wastewater recycling and the behavior of fluids. This morning, in preparation for Endeavour's targeted landing on June 29, at 8:44 EDT at the Kennedy Space Center, crew members checked the Shuttle's landing controls, worked to unclog a line in a water recycling experiment and spoke with reporters about the mission. * * * * * * * * * * * * * * * * Another milestone was set in the prelaunch processing as the payloads for the next Space Shuttle mission, STS-51, arrived the Pad 39-B this morning. The Advanced Communications Technology Satellite (ACTS) and the Orbiting Retrievable Far and Extreme Ultraviolet Spectrometer (OREFUS) arrived early Friday morning. The ACTS will serve as a test bed for advanced experimental communications satellite concepts and technology. Its Transfer Orbit Stage upper stage booster will lift the satellite to geosynchronous altitude on the first day of the mission. The ORFEUS is a telescope system designed to provide information on how stars are born and how they die, while studying gaseous interstellar clouds. Over the weekend, payload processing team members continued to install the ACTS-TOS and OREFEUS-SPAS into the launch pad's payload changeout room. The STS-51 mission is scheduled to be launched in mid- July. Space Shuttle Discovery's crew of five plan to stay in space for nine days and return to the Kennedy Space Center for landing. * * * * * * * * * * * * * * * * Here's the broadcast schedule for Public Affairs events on NASA TV. Note that all events and times may change without notice and that all times listed are Eastern. NASA TV will provide continuous coverage of the STS-57 mission from lift-off to landing. NASA TV is carried on GE Satcom F2R, transponder 13, C-Band, 72 degrees West Longitude, transponder frequency is 3960 MHz, audio subcarrier is 6.8 MHz, polarization is vertical. Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61 =--=--=-END-=--=--= =--=--=START=--=--= NASA Spacelink File Name:930628A.REL 6/28/93: ENDEAVOUR SCHEDULED TO LAND AT KSC TOMORROW MORNING Mitch Varnes June 28, 1993 KSC Release No. 74-93 Nearly eight days after rocketing into space on the year's fourth Shuttle mission, the orbiter Endeavour and a six member crew are preparing to return home tomorrow morning. Endeavour is now scheduled to land at the Shuttle Landing Facility (SLF) at 8:44 a.m. EDT on Tuesday. The deorbit burn to bring Endeavour back to Earth is planned to take place at 7:34 a.m., 70 minutes before landing. The nominal landing time of 8:44 a.m. is the first of two oppor- tunities Endeavour has to land at its Florida launch site. The ship's second chance to land at KSC is at 10:24 tomorrow morning. Current weather forecasts for tomorrow morning indicate marginal but potentially favorable conditions for a KSC landing. Endeavour will reenter Earth's atmosphere over the South Pacific and head eastward toward the three-mile-long Shuttle runway. The spaceship will soar over Baja California, Mexico, southern Texas and the Gulf of Mexico before reaching the west central Florida coast. Mission commander Ron Grabe will then guide NASA's newest orbiter high above Orlando and Titusville before bringing the Shuttle in for a landing onto the concrete runway. Endeavour's twin sonic booms should be audible over much of Central Florida. Endeavour roared away from KSC launch pad 39-B on Monday, June 21 at 9:07 a.m. EDT. STS-57 is the fourth flight of Endeavour and the 56th Space Shuttle mission. During the course of the eight- day flight, the astronauts successfully conducted scores of biomedical and materials sciences experiments inside the pres- surized Spacehab module. Two astronauts particpated in a spacewalk and the European Retrievable Carrier (EURECA) was retrieved by the crew and stowed inside Endeavour's payload bay. EURECA was deployed from the Shuttle Atlantis in the summer of 1992 and contains several experiments to study the longterm ef- fects of exposure to microgravity. Endeavour will next fly on mission STS-61, now targeted for launch in December. KSC's Shuttle Landing Facility has previously served as the land- ing site for 15 Shuttle missions. The first KSC landing occurred at the end of mission STS-41-B, on Feb. 11, 1984. The most recent KSC landing occurred on April 17, 1993 when STS-56 Com- mander Ken Cameron guided Discovery to a successful landing. The KSC news center will open at 5 a.m. on Tuesday to support Endeavour's landing. Buses will begin transporting members of the news media to the landing facility beginning at 5:15 a.m. The last press bus will leave at 7:15 a.m., sharp. Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61 =--=--=-END-=--=--= =--=--=START=--=--= NASA Spacelink File Name:6_2_2_45_11_16.TXT STS-57 Status Report #14 MISSION CONTROL CENTER Sunday June 27, 1993, 2 p.m. CDT The STS-57 crew put in another busy day of science and hardware testing today as it wrapped up a full work week in space. Ron Grabe, Brian Duffy and Janice Voss participated in the Neutral Body Position study. Flight surgeons have noted on previous flights that the body's basic posture changes while in microgravity. This postural change, sometimes called the "zero-g crouch," is in addition to the one- to two-inch lengthening of the spine during space missions. To better document this phenomenon over the duration of a space mission, still and video photography of crew members in a relaxed position are taken early and late in the mission. Researchers will include these findings in the specifications for design of future spacecraft to make work stations and living areas efficient and more comfortable for astronauts. Jeff Wisoff worked on several more run-throughs of the Fluid Acquisition and Resupply Experiment, called FARE, in Endeavour's middeck. This test transfers water between two see-through containers with the goal of making the transfer cycle without causing bubbles in the water. Experiment investigators hope to use the results to develop refueling systems for orbiting satellites. Nancy Sherlock stepped through the electronics procedures portion of the Human Factors Assessment this morning. She set up a work platform then hooked up a notebook computer and went through a simulated computer procedure for a space station propulsion system. These studies rely on the astronauts' feedback for planning future, longer-duration missions. Since crew members will increasingly rely on computer procedures instead of paper documents for maintenance and operations of spacecraft and experiment equipment, it is important to make the equipment and the procedures as easy to use as possible. Sherlock and Duffy also completed some preparatory steps for a possible in- flight maintenance procedure on the Environmental Flight Experiment called EFE, a test of water recycling hardware being developed for a space station. Sherlock and Duffy removed 27 screws from the top panel of the experiment fixture, leaving eight screws to hold the panel in place. Should a decision be made to perform the repair procedure, a designated crew member would try to remove a clog in the experiment's fluid line. Endeavour continues to perform nearly flawlessly as it circles the Earth every 93 minutes in an elliptical orbit of 256 by 208 nautical miles. -end- Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61 =--=--=-END-=--=--= =--=--=START=--=--= NASA Spacelink File Name:6_2_2_45_11_17.TXT MCC Status Report #15 MISSION CONTROL CENTER STS-57 Status Report #15 Monday, June 28, 1993, 5 a.m. CDT Endeavour's crew this morning checked the controls the shuttle will use to return to Earth, worked to unclog a line in a water recycling experiment, and planned to speak with reporters about their flight in an early morning press conference. Mission Specialist Nancy Sherlock performed an impromptu plumbing job on the Environmental Control Systems Flight Experiment, a study of wastewater purification equipment that may be used aboard future spacecraft. EFE uses a mixture of water and potassium idodide to simulate wastewater. The solution is pumped through a series of filters to purify it. During the flight, experimenters have seen a reduced flow of water through the device and opted to perform the maintenance procedure. Sherlock loosened a fitting on one water line inside the experiment, wrapped the loose fitting with an absorbent diaper, and, using a laptop computer onboard, turned a pump on the experiment into reverse for about 20 minutes in an attempt to flush out the clog. Sherlock then retightened the fitting and put the experiment back into normal operation for ground experimenters, who will now spend about an hour and a half watching it run to see if the clog has been cleared. Meanwhile, Commander Ron Grabe and Pilot Brian Duffy found everything in order during a standard check of Endeavour's flight controls and cockpit displays performed in preparation for the trip home. A test firing of the shuttle's steering jets is scheduled later. Endeavour is currently set to touchdown at 7:44 a.m. CDT Tuesday at Florida's Kennedy Space Center. However, enough supplies and electricity are available onboard to add another day in orbit to the flight, and shuttle managers will consider that option when they meet later this moring. A second opportunity for landing Tuesday at Kennedy would mean a 9:24 a.m. touchdown. For Tuesday's first opportunity, Endeavour would fire its engines at 6:34 a.m. to begin its descent. For the later landing, Endeavour's engines would fire at 8:14 a.m. The crew was awakened at 10:37 p.m. Sunday for their eighth day in orbit to Perry Como's "Catch a Falling Star." Endeavour is in a 256 by 208 nautical mile orbit, completing a circle of Earth every 93 minutes, 21 seconds. --end-- Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61 =--=--=-END-=--=--= =--=--=START=--=--= NASA Spacelink File Name:6_2_2_45_11_18.TXT MCC Status Report #16 MISSION CONTROL CENTER STS-57 Status Report #16 Monday, June 27, 1993, 9 a.m. CDT Endeavour's crew this morning checked the equipment the shuttle will use for tomorrow's Florida landing; attempted a repair of a water recycling experiment; and spoke to reporters about their flight in a 6:37 a.m. CDT press conference. Endeavour is currently set to touchdown at 7:44 a.m. central Tuesday at Florida's Kennedy Space Center. A second opportunity for a landing tomorrow at Kennedy would mean a 9:24 a.m. touchdown. For tomorrow's early opportunity, Endeavour would fire its engines at 6:34 a.m. to begin its descent. For the later landing, Endeavour's engines would fire at 8:14 a.m. Mission Specialist Nancy Sherlock devoted most of her day to an impromptu plumbing job on the Environmental Control Systems Flight Experiment, or EFE, a study of wastewater purification equipment that may be used aboard future spacecraft. EFE uses a mixture of water and potassium idodide to simulate wastewater. The solution is pumped through a series of filters to purify it. However, experimenters have seen a reduced flow of water through the device. Sherlock loosened a fitting on one water line inside the experiment, wrapped the loose fitting with an absorbent diaper, and, using a laptop computer onboard, turned a pump on the experiment into reverse for about 20 minutes in an attempt to flush out the clog. Sherlock then retightened the fitting and put the experiment back into normal operation for ground experimenters. However, as the experiment was powered up, Sherlock spotted a leak from the fitting. Rather than dissassemble the equipment again, flight controllers opted to stop the work due to the limited time left for the crew's other priorities. Meanwhile, Commander Ron Grabe and Pilot Brian Duffy found everything in order during standard checks of Endeavour's flight controls, cockpit displays and steering jets performed in preparation for the trip home. Endeavour is in excellent condition for tomorrow's landing. The remainder of the day will be devoted to powering down and packing up the experiments on board in preparation for the return. Endeavour is in a 256 by 208 nautical mile orbit, completing a circle of Earth every 93 minutes, 21 seconds. - end - Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61 =--=--=-END-=--=--= =--=--=START=--=--= NASA Spacelink File Name:6_2_2_45_11_19.TXT MCC Status Report #17 MISSION CONTROL CENTER STS-57 Status Report #17 Monday, June 28, 1993, 3 p.m. CDT Endeavour's six-member crew went to sleep a few minutes after 2 p.m. CDT today after completing their eighth work day in space. Earlier today, Ron Grabe and Brian Duffy checked the equipment the shuttle will use for tomorrow's Florida landing. Nancy Sherlock, aided by Janice Voss, attempted a repair of a water recycling experiment. The entire crew spoke to reporters about their flight in a 6:37 a.m. CDT press conference. Endeavour is currently set to touch down at 7:45 a.m. central Tuesday at Florida's Kennedy Space Center. A second opportunity for a landing tomorrow at Kennedy would mean a 9:23 a.m. touchdown. For tomorrow's early opportunity, Endeavour would fire its engines at 6:39 a.m. to begin its descent. For the later landing, Endeavour's engines would fire at 8:19 a.m. The Spaceflight Meterology Group's latest weather forecast remains the same for Tuesday morning. The Planning Team and Entry Team flight controllers will monitor weather conditions leading up to Endeavour's scheduled landing time. Curent predictions are generally favorable with a possibility of low clouds and rain showers within 30 miles of KSC's runway 33 at the first landing opportunity, and a chance of rising winds at the time of the second opportunity. Meanwhile, Commander Ron Grabe and Pilot Brian Duffy found everything in order during standard checks of Endeavour's flight controls, cockpit displays and steering jets performed in preparation for the trip home. Endeavour is in excellent condition for tomorrow's landing. The STS-57 crew will wake up at 10:07 p.m. CDT tonight to begin their final steps in powering down and packing up the experiments on board in preparation for their Tuesday landing. Endeavour is in a 256 by 208 nautical mile orbit, completing a circle of Earth every 93 minutes. Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61 =--=--=-END-=--=--= =--=--=START=--=--= NASA Spacelink File Name:6_2_2_45_12.TXT 6/28/93: ENDEAVOUR SCHEDULED TO LAND AT KSC TOMORROW MORNING Mitch Varnes June 28, 1993 KSC Release No. 74-93 Nearly eight days after rocketing into space on the year's fourth Shuttle mission, the orbiter Endeavour and a six member crew are preparing to return home tomorrow morning. Endeavour is now scheduled to land at the Shuttle Landing Facility (SLF) at 8:44 a.m. EDT on Tuesday. The deorbit burn to bring Endeavour back to Earth is planned to take place at 7:34 a.m., 70 minutes before landing. The nominal landing time of 8:44 a.m. is the first of two oppor- tunities Endeavour has to land at its Florida launch site. The ship's second chance to land at KSC is at 10:24 tomorrow morning. Current weather forecasts for tomorrow morning indicate marginal but potentially favorable conditions for a KSC landing. Endeavour will reenter Earth's atmosphere over the South Pacific and head eastward toward the three-mile-long Shuttle runway. The spaceship will soar over Baja California, Mexico, southern Texas and the Gulf of Mexico before reaching the west central Florida coast. Mission commander Ron Grabe will then guide NASA's newest orbiter high above Orlando and Titusville before bringing the Shuttle in for a landing onto the concrete runway. Endeavour's twin sonic booms should be audible over much of Central Florida. Endeavour roared away from KSC launch pad 39-B on Monday, June 21 at 9:07 a.m. EDT. STS-57 is the fourth flight of Endeavour and the 56th Space Shuttle mission. During the course of the eight- day flight, the astronauts successfully conducted scores of biomedical and materials sciences experiments inside the pres- surized Spacehab module. Two astronauts particpated in a spacewalk and the European Retrievable Carrier (EURECA) was retrieved by the crew and stowed inside Endeavour's payload bay. EURECA was deployed from the Shuttle Atlantis in the summer of 1992 and contains several experiments to study the longterm ef- fects of exposure to microgravity. Endeavour will next fly on mission STS-61, now targeted for launch in December. KSC's Shuttle Landing Facility has previously served as the land- ing site for 15 Shuttle missions. The first KSC landing occurred at the end of mission STS-41-B, on Feb. 11, 1984. The most recent KSC landing occurred on April 17, 1993 when STS-56 Com- mander Ken Cameron guided Discovery to a successful landing. The KSC news center will open at 5 a.m. on Tuesday to support Endeavour's landing. Buses will begin transporting members of the news media to the landing facility beginning at 5:15 a.m. The last press bus will leave at 7:15 a.m., sharp. Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61 =--=--=-END-=--=--= =--=--=START=--=--= NASA Spacelink File Name:6_2_2_45_2.TXT STS-57 KEPLERIAN ORBITAL ELEMENTS SPACELINK NOTE: Spacelink contains an IBM MS-DOS/Windows program (V2L9322.ZIP) that will convert M-50 state vectors into the 2-line format preferred by many callers. Enter IBM at the GO TO prompt and check out the section on satellite tracking programs. STS-57 element set GSFC-020 (orbit 106) STS-57 1 22684U 93 37 A 93179.33829841 0.00002828 00000-0 51826-4 0 202 2 22684 28.4565 266.3723 0060453 71.4005 289.3149 15.44623943 1062 Satellite: STS-57 Catalog number: 22684 Epoch time: 93179.33829841 (28 JUN 93 08:07:08.98 UTC) Element set: GSFC-020 Inclination: 28.4565 deg RA of node: 266.3723 deg Space Shuttle Flight STS-57 Eccentricity: 0.0060453 Keplerian Elements Arg of perigee: 71.4005 deg Mean anomaly: 289.3149 deg Mean motion: 15.44623943 rev/day Semi-major Axis: 6810.6154 Km Decay rate: 0.28E-04 rev/day*2 Apogee Alt: 473.40 Km Epoch rev: 106 Perigee Alt: 391.06 Km NOTE - This element set is based on NORAD element set # 020. The spacecraft has been propagated to the next ascending node, and the orbit number has been adjusted to bring it into agreement with the NASA numbering convention. R.A. Parise, Goddard Space Flight Center G.L.CARMAN STS-57 FLIGHT DAY 8 STATE VECTOR STS-57 FLIGHT DAY 8 STATE VECTORS ON ORBIT OPERATIONS (Posted 06/28/93 by Roger Simpson) The following vector for the flight of STS-57 is provided by NASA Johnson Space Center, Flight Design and Dynamics Division for use in ground track plotting programs. The vector represents the trajectory of Endeavour during on orbit operations after the rendezvous with Eureca. Lift off Time : 1993/172/13:07:21.953 Lift off Date : 06/21/93 Vector Time (GMT) : 179/17:07:21.953 Vector Time (MET) : 007/04:00:00.000 Orbit Count : 111 Weight : 239544.0 LBS Drag Coefficient : 2.00 Drag Area : 2750.0 SQ FT M50 Elements Keplerian Elements ----------------------- -------------------------- X = -19323242.8 FT A = 3678.7196 NM Y = -5706691.9 FT E = 0.005996 Z = -9921568.0 FT I (M50) = 28.20246 DEG Xdot = 5047.439912 FT/S Wp (M50) = 73.52421 DEG Ydot = -24091.412670 FT/S RAAN (M50) = 263.12893 DEG Zdot = 4232.829273 FT/S / N (True) = 217.28186 DEG Anomalies \ M (Mean) = 217.69954 DEG Ha = 256.345 NM Hp = 207.758 NM Mean of 1950 (M50) : Inertial, right-handed Cartesian system whose Coordinate System origin is the center of the earth. The epoch is the beginning of the Besselian year 1950. X axis: Mean vernal equinox of epoch Z axis: Earth's mean rotational axis of epoch Y axis: Completes right-hand system A: Semi-major axis E: Eccentricity N: True anomaly I: Inclination M: Mean anomaly Wp: Argument of perigee Ha: Height of apogee RAAN: Right ascension of ascending node Hp: Height of perigee Questions regarding these postings may be addressed to Roger Simpson, Mail Code DM4, L. B. J. Space Center, Houston, Texas 77058, Telephone (713) 483-1928. Dear Customer, we are in the process of reviewing the contents of this product and are interested in determining if it fits your needs. If you use these state vectors, please drop us a postcard and let us know what we can do to improve your use of this product. Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61 =--=--=-END-=--=--= =--=--=START=--=--= NASA Spacelink File Name:6_2_2_45_6.TXT STS-57 TV SKED, REV M *********************************************************************** NASA SELECT TV SCHEDULE STS-57 6/27/93 REV M *********************************************************************** NASA Select programming can be accessed through GE Satcom F2R, transponder 13. The frequency is 3960 MHz with an orbital position of 72 degrees West Longitude. This is a full transponder service and will be operational 24 hours a day. Two hour edited programs of each flight day will be replayed for Hawaii and Alaska on Telstar 301, transponder 9, channel 18. The orbital position is 96 degrees West Longitude, with a frequency of 4060 MHz. Audio is on 6.2 & 6.8 MHz. The programs will begin on launch day and continue through landing airing at 11:01PM Central Time. This NASA Select Television Schedule of mission coverage is available on COMSTORE, the mission TV schedule computer bulletin board service. Call 713/483-5817, and follow the prompts to access this service. NOTE: The STS-57 launch occurred on Monday, June 21st at 8:07AM CDT * Denotes changes from last revision. -------------------------- Sunday, June 27 ---------------------------- FD7 ORBIT SUBJECT SITE MET CDT ----- ------- ---- --- --- 102 CREW WAKE UP 06/14:30 10:37 PM -------------------------- Monday, June 28 ---------------------------- FD8 NOTE: SPACEHAB ACTIVITIES MAY BE DOWNLINKED THROUGOUT THE DAY. 107 * CREW CONFERENCE TDRW 06/22:30 06:37 AM T=20:00 108 MISSION STATUS BRIEFING JSC 06/01:23 09:30 AM 110 * Ku BAND STOW 07/02:55 11:02 AM (Not televised) 110 REPLAY OF NASA ADMINSITRATOR JSC 07/02:23 10:30 AM ADDRESS T=35:00 110 MISSION UPDATE JSC 07/03:53 12:00 PM 112 CREW SLEEP 07/06:00 02:07 PM 114 REPLAY OF FD8 ACTIVITIES JSC 07/09:23 05:30 PM 117 CREW WAKE UP 07/14:00 10:07 PM ---------------------------- Tuesday, June 29 ------------------------- FD9 122 DEORBIT BURN (Not Televised) 07/22:27 06:34 AM 123 LANDING KSC 07/23:37 07:44 AM POST LANDING PRESS CONFERENCE KSC L+TBD LANDING REPLAYS KSC L+TBD ------------------------ DEFINITION OF TERMS ------------------------ CDT: Central Daylight Time EFE: Environmental control and life support system Flight Experiment EURECA: European Retrievable Carrier FARE: Fluid Acquisition and Resupply Experiment FD: Flight Day JSC: Johnson Space Center KSC: Kennedy Space Center LEMZ: Liquid Encapsulated Melt Zone MET: Mission elapsed Time. The time which begins at the moment of launch and is read: Days/Hours:minutes. Launch= 00/00:00 MSB: Mission Status Briefing P/TV: Photo/Television Scene RMS: Remote Manipulator System SCG: Solution Crystal Growth SPACEHAB:Commercial module carried in payload bay STS: Space Transportation System TDRE,W: Tracking and Data Relay Satellite, both East and West longitudes TDRSS: Tracking and Data Relay Satellite System T=: Time event duration equals VTR: Video Tape Recorder Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61 =--=--=-END-=--=--= =--=--=START=--=--= NASA Spacelink File Name:6_6_10_5.TXT 6/28/93: TOPEX POSEIDON MAPS PRECISE GLOBAL SEA LEVEL Brian Dunbar Headquarters, Washington, D.C. June 28, 1993 Mary A. Hardin Jet Propulsion Laboratory, Pasadena, Calif. RELEASE: 93-122 During the first 6 months of their mission, scientists using the U.S.- French TOPEX/Poseidon oceanographic satellite have recorded the most accurate measurements to date of global sea level changes. The data will be used by oceanographers to calibrate the computer models that help forecast future climate changes. "The changes in sea level we have observed during the first 6 months from October 1992 to March 1993 are a combination of the effects of seasonal warming and cooling as well as wind forcing," said Lee-Lueng Fu, TOPEX/Poseidon Project Scientist at NASA's Jet Propulsion Laboratory (JPL), Pasadena, Calif. In the Northern Hemisphere, the sea level in the Gulf Stream off the United States East Coast and the sea level in the Kuroshio regions east of Japan dropped by more than 12 inches (30 centimeters). Most of this drop was caused by the winter cooling of the ocean by the cold continental air mass blown off the North American and Asian continents, Fu said. In the Southern Hemisphere, a corresponding sea level rise occurred at similar latitudes which resulted from the warming of the summer atmosphere. "It takes an increase or decrease of 1 degree Celsius (1.8 degrees Fahrenheit) in the average temperature of a water column 50 meters (165 feet) deep to cause the sea level to rise or fall by 1 centimeter (0.4 inches)," Fu explained. The sea level change in the Northern Hemisphere is larger than that in the Southern Hemisphere because the larger land mass of the Northern Hemisphere creates colder continental air mass that cools the ocean water off the east coasts of North America and Asia. Seasonal changes in the trade winds caused a drop in sea level at the equator in both the Pacific and Atlantic oceans, Fu said. The rise in sea level in the eastern tropical Pacific Ocean off the coast of South America was the remnant of the Kelvin wave pulses that began in December 1992. A Kelvin wave pulse creates a surge of warm water that moves eastward along the equator and can contribute to El Nino conditions. In the Indian Ocean, reversing seascaused a fall in sea level in the eastern and southern regions and a rise in sea level in the northwestern region. JPL manages the NASA portion of the joint U.S.-French mission for NASA's Office of Mission to Planet Earth. Launched Aug. 10, 1992, the satellite is part of NASA's long-term effort to study Earth as a global environmental system. -end- Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61 =--=--=-END-=--=--= =--=--=START=--=--= NASA Spacelink File Name:6_8_3_4_30.TXT Magellan Status 6/28/93 PUBLIC INFORMATION OFFICE JET PROPULSION LABORATORY CALIFORNIA INSTITUTE OF TECHNOLOGY NATIONAL AERONAUTICS AND SPACE ADMINISTRATION PASADENA, CALIF. 91109 MAGELLAN STATUS REPORT June 28, 1993 The Magellan Transition Experiment to circularize the spacecraft's orbit by lowering it into the top of the Venusian atmosphere to create drag is going very well, project officials said today. As of last Friday, June 25, the spacecraft had made 260 atmospheric drag passes and the apoapsis, or furthest point from the planet, had been lowered below 5,300 kilometers (3,286 miles) from its original orbital apoapsis of 8,540 kilometers (5,294 miles). The spacecraft's closest point to the planet, or periapsis, is being maintained at between 138 and 140 kilometers altitude (about 86 to 88 miles). The spacecraft also is being maintained in a specific corridor on its closest passes to the planet. Plans were being made to execute a corridor orbit trim maneuver, or COTM, Thursday to slightly raise the altitude at periapsis and maintain a steady course during the upcoming July 4th holiday weekend. It is expected the orbit will be sufficiently changed by early August so that only fine-tuning the orbit will be needed to achieve the desired, nearly circular orbit required for high- resolution gravity studies of Venus. This is the first time a spacecraft's orbit has been changed at another planet by "aerobraking", or using the planet's atmosphere to create drag. _____ Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61 =--=--=-END-=--=--= =--=END OF COLLECTION---COLLECTED 13 FILES---COMPLETED 21:07:02=--=