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- Circular No. 5396
- Central Bureau for Astronomical Telegrams
- INTERNATIONAL ASTRONOMICAL UNION
- Postal Address: Central Bureau for Astronomical Telegrams
- Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
- Telephone 617-495-7244/7440/7444 (for emergency use only)
- TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505
- MARSDEN or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
-
-
- 1991 WA
- R. H. McNaught reports the following measurements of a fast-
- moving asteroidal object discovered by himself on a U.K. Schmidt
- Telescope plate taken by M. A. Read and K. S. Russell (the Dec. 1-4
- observations were obtained by McNaught with the Uppsala Southern
- Schmidt telescope):
-
- 1991 UT R.A. (1950) Decl. V Observer
- Nov. 29.45312 1 59 14.93 -21 12 05.4 16 Read
- Dec. 1.42488 1 56 10.98 -14 58 48.0 McNaught
- 1.55171 1 55 59.42 -14 36 29.9 "
- 1.55775 1 55 59.03 -14 35 25.2 "
- 2.49549 1 54 50.78 -11 56 59.7 "
- 2.61539 1 54 41.53 -11 37 31.4 "
- 4.44760 1 52 56.44 - 7 00 45.9 "
- 4.45315 1 52 56.12 - 6 59 56.6 "
-
- Orbital elements from the above observations by G. V. Williams:
-
- T = 1991 Sept.26.426 ET Peri. = 241.835
- e = 0.64254 Node = 66.089 1950.0
- q = 0.56389 AU Incl. = 39.673
- a = 1.57748 AU n = 0.497458 P = 1.98 years
-
- 1991 ET R.A. (1950) Decl. Delta r V
- Nov. 30 1 58.30 -19 23.7 0.260 1.160 16.1
- Dec. 5 1 52.50 - 5 44.9
- 10 1 50.13 + 3 37.4 0.386 1.267 16.9
- 15 1 49.90 +10 09.6
- 20 1 51.17 +14 53.5 0.548 1.368 17.9
- 25 1 53.56 +18 27.4
- 30 1 56.83 +21 14.5 0.727 1.465 18.6
-
- PERIODIC COMET SCHWASSMANN-WACHMANN 1
- H. Kosai, National Astronomical Observatory of Japan, communi-
- cates that M. Tsumura (Oishi Station) has observed an outburst of
- this comet on a photograph taken Dec. 2.528 UT; the comet appeared
- stellar, of mag 12-13, suggesting an early phase of outburst. S.
- Larson, University of Arizona, independently observed the outburst
- on Dec. 4, noting a fan tail at p.a. about 100 deg; two 30-min
- spectrograms (range 300-850 nm) show only continuum.
-
-
- 1991 December 4 Daniel W. E. Green