Central Bureau for Astronomical Telegrams
IAUC 3987: 1976 XV = 1984m; 1984c
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Read IAUC 3988
Circular No. 3987
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM Telephone 617-495-7244/7440/7444
PERIODIC COMET SCHAUMASSE (1976 XV = 1984m)
Elements from the new computations mentioned on IAUC 3986:
Epoch = 1976 Sept. 19.0 ET Epoch = 1984 Dec. 6.0 ET
T = 1976 Sept. 5.066 ET T = 1984 Dec. 6.482 ET
Peri. = 57.232 Peri. = 57.368
Node = 80.569 1950.0 Node = 80.423 1950.0
Incl. = 11.861 Incl. = 11.840
q = 1.20543 AU q = 1.21265 AU
e = 0.70425 e = 0.70324
a = 4.07580 AU a = 4.08635 AU
n = 0.119780 n = 0.119317
P = 8.23 years P = 8.26 years
1984/85 ET R.A. (1950.0) Decl. p r m1
Sept.17 7 20.94 +20 50.3 1.719 1.582 13.2
27 7 56.40 +20 34.4
Oct. 7 8 34.13 +19 53.5 1.485 1.439 12.2
17 9 13.88 +18 44.5
27 9 55.14 +17 05.8 1.313 1.321 11.4
Nov. 6 10 37.17 +14 58.9
16 11 19.11 +12 28.9 1.212 1.242 10.8
26 12 00.09 + 9 43.8
Dec. 6 12 39.31 + 6 53.6 1.174 1.213 10.6
16 13 16.25 + 4 07.8
26 13 50.50 + 1 34.3 1.177 1.239 10.8
Jan. 5 14 21.81 - 0 41.5
15 14 50.04 - 2 37.2 1.190 1.316 11.2
25 15 15.05 - 4 11.9
Feb. 4 15 36.67 - 5 26.6 1.191 1.433 11.7
14 15 54.75 - 6 23.4
24 16 09.04 - 7 05.0 1.171 1.574 12.3
Mar. 6 16 19.26 - 7 34.5
16 16 25.17 - 7 55.3 1.136 1.731 12.9
PERIODIC COMET NEUJMIN 1 (1984c)
Total visual magnitude estimates and coma diameters: Aug.
25.21 UT, 13.6, 0.5 (C. S. Morris, Lockwood Valley, CA, 0.25-m
reflector); 28.20, 11.5:, 0.7 (R. Keen, Mt. Thorodin, CO, 0.30-m
reflector); 31.22, 13.5, 0.6 (Morris).
1984 September 12 (3987) Brian G. Marsden
Read IAUC 3988
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