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- The Planets:1993
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-
- Visibility of Planets:
-
- MERCURY can only be seen low in the east before sunrise, or low
- in the west after sunset (about the time of the beginning or end
- of civil twilight). It is visible in the mornings between the
- following approximate dates: January 1 to January 8, March 16
- to May 8, July 24 to August 21, and November 12 to December 18.
- The planet is brighter at the end of each period (the best
- conditions in northern latitudes occur during the second half of
- November; and in southern latitudes from the third week in March
- until the end of April. It is visible in the evenings between
- the following approximate dates: February 5 to March 2, May 24
- to July 6, and September 9 to October 31. The planet is brighter
- at the beginning of each period (the best conditions in northern
- latitudes occur for a few days just after mid-February, in low
- northern and southern latitudes for most of June, and in
- southern latitudes from the third week in September until late
- October). Mercury transits the sun's disk on November 6 from
- 3h 6m to 4h 47m; the event is visible from Hawaii, the Pacific
- Ocean except the eastern part, Australasia, Asia except the
- extreme north, Indian Ocean, and east Africa.
-
- VENUS is a brilliant object in the evening sky from the beginning
- of the year until the end of March when it becomes too close to
- the Sun for observation. Early in April it reappears in the
- morning sky where it can be seen until a few days after the
- beginning of December, when it becaumes too close to the Sun for
- observation. Venus is in conjunction with Mercury on April 16,
- and November 14, and with Jupiter on November 8.
-
- MARS can be seen in Gemini from the beginning of the year. On
- January 7 it is at opposition when it can be seen throughout
- the night, its elongation gradually decreases (passing 5 degrees
- S. of Pollux on April 14) and by late April it passes into
- Cancer when it can only be seen in the evening sky. It then
- continues through Leo (passimg 0.8 degrees N. of Regulus on
- June 22), Virgo (passing 2 degrees N. of Spica on September 16,
- and Libra; from early Novrmbrt until the end of the year it is
- too close to the Sun for observation. Mars is in conjunction
- wirh Jupiter on September 7 and with Mercury on October 6 and
- 28.
-
- JUPITER can be seen in Virgo from the beginning of the year for
- more than half of the night. It is at opposition on March 30
- when it can be seen throughout the night. By the end of June
- it can be seen only in the evening sky and from early October
- it becomes too close to the Sun for observation. It reappears
- at the beginniiiing of November in the morning sky still in
- Virgo where it remains until mid-December when it passes into
- Libra. Jupiter is in conjunction with Mars on September 7,
- with Mercury on September 24 and with Venus on November 8.
-
- SATURN can be seen in the evening sky in Capricornus until late
- January, when it becomes too close to the Sun for observation.
- It reappears in the morning sky in mid-February passing into
- Aquarius in late March; it is at opposition on August 19, when
- it is visible throughout the night. Its eastward elongation
- then gradually decreases as it passes back into Capricornus,
- until from mid-November it can only be seen in the evening sky.
- and in December it returns to Aquarius.
-
- URANUS is too close to the Sun for observation until the end of
- January when it appears in the evening sky in Sagittarius, in
- which constellation it remains throughout the year. It is at
- opposition on July 12, when it can be seen throughout the
- night. It can only be seen in the evening sky from early
- October until late December when it again becomes too close to
- the Sun for observation.
-
- NEPTUNE is too close to the Sun for observation until late
- January when it can be seen in the morning sky shortly before
- sunrise in Sagittarius, in which constellation it remains
- throughout the year. It is at opposition on July 12 when it can
- be seen throughout the night. It can only be seen in the evening
- sky until from early October until towards the end of December
- when it again becomes too close to the Sun for observation.
-
- DO NOT CONFUSE (1) Jupiter with Mars from late August until mid-
- September when Jupiter is the brighter object. (2)Mercury with
- Mars from the end of September until mid-October and during the
- last week of October when Mercury is the brighter object. The
- reddish tint of Mars should assist in its identification.
- (3) Venus with Jupiter during the second week of November and
- with Mercury around mid-November and mid-December; on all
- occasions Venus is the brighter object.
-
-
-
- Visibility of Planets in Morning & Evening Twilight:
-
- Morning Evening
-
- Venus April 6 - December 6 January 1 - March 28
-
- Mars January 1 - January 7 January 7 - November 2
-
- Jupiter January 1 - March 30 March 30 - October 5
- November 1 - December 31
-
- Saturn February 27 - August 19 January 1 - January 23
- August 19 - December 31
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-
- Source:The Nautical Almanac Office, U.S. Naval Observatory.
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