Central Bureau for Astronomical Telegrams
IAUC 5490: 1992e; N Cyg 1992
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Read IAUC 5491
Circular No. 5490
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
PERIODIC COMET SINGER BREWSTER (1992e)
J. V. Scotti, Lunar and Planetary Laboratory, reports his
recovery of this comet with the Spacewatch telescope, Kitt Peak. The
last image is very slightly diffuse, with an 8" coma visible. The
indicated correction to the prediction on MPC 14595 (ephemeris MPC
19703) is Delta T = -0.84 day.
1992 UT R.A. (2000) Decl. m1
Apr. 1.34536 10 11 30.23 + 4 49 29.8 20.4
1.36634 10 11 29.83 + 4 49 39.0
4.27955 10 10 36.87 + 5 09 32.7
4.30044 10 10 36.45 + 5 09 40.9
4.32059 10 10 36.14 + 5 09 50.1 20.6
Improved orbital elements from 41 observations 1986-1992:
Epoch = 1992 Oct. 25.0 TT
T = 1992 Oct. 27.2349 TT Peri. = 46.6455
e = 0.413766 Node = 192.6170 2000.0
q = 2.026662 AU Incl. = 9.1929
a = 3.457086 AU n = 0.1533341 P = 6.428 years
1992 TT R. A. (2000) Decl. Delta r Elong. Phase m2
Mar. 29 10 12.79 + 4 25.3 1.677 2.556 144.4 13.1 20.4
Apr. 8 10 09.82 + 5 33.3 1.718 2.516 133.7 16.7 20.6
18 10 09.51 + 6 27.1 1.776 2.477 123.6 19.7 20.7
28 10 11.92 + 7 04.4 1.845 2.438 114.3 22.1 20.8
May 8 10 16.96 + 7 24.2 1.923 2.401 105.6 23.9 20.9
18 10 24.40 + 7 26.9 2.005 2.364 97.7 25.1 21.0
28 10 33.96 + 7 13.2 2.089 2.329 90.4 25.8 21.1
June 7 10 45.37 + 6 44.2 2.173 2.294 83.6 26.1 21.2
NOVA CYGNI 1992
Photometry obtained with a 0.4-m reflector at the N. Copernicus
Observatory and Planetarium, Brno, by D. Hanzl, F. Hroch and E.
Neureiterova: Mar. 17.110 UT, V = 6.55 +/- 0.01, B-V = +0.23 +/- 0.01;
19.141, 6.86 +/- 0.01, 0.15 +/- 0.02; 29.132, 7.12 +/- 0.01, 0.08 +/-
0.02; 30.188, 7.23 +/- 0.04, 0.10 +/- 0.04; 31.189, 7.18 +/- 0.04,
0.11 +/- 0.05.
1992 April 4 (5490) Brian G. Marsden
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