Central Bureau for Astronomical Telegrams
IAUC 2941: 1976c; 1963 UA
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Read IAUC 2942
Circular No. 2941
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK
Western Union: RAPID SATELLITE CAMBMASS
COMET SCHUSTER (1976c)
Further positions have been reported as follows:
1976 UT R. A. (1950) Decl. m1 Observer
Mar. 6.06562 10 50 40.40 -42 48 26.6 Blanco
6.08131 10 50 39.33 -42 48 26.0 "
6.13955 10 50 35.51 -42 48 25.5 Schuster
6.16725 10 50 33.79 -42 48 25.9 "
7.05845 10 49 35.43 -42 47 55.2 Blanco
7.07257 10 49 34.44 -42 47 55.7 "
20.01476 10 35 42.81 -42 27 56.9 16-17 Schuster
20.03553 10 35 41.73 -42 27 54.5 "
26.11736 10 29 31.03 -42 10 39.9 Blanco
26.12847 10 29 30.33 -42 10 38.9 "
27.12446 10 28 31.36 -42 07 24.5 Schuster
27.13831 10 28 30.55 -42 07 22.0 "
28.98949 10 26 42.72 -42 01 01.1 "
29.05598 10 26 38.97 -42 00 48.3 "
Apr. 4.21885 10 20.93 -41 37.3 Roemer
5.19751 10 20 03.42 -41 33 10.4 "
B. M. Blanco (Cerro Tololo Interamerican Observatory).
H.-E. Schuster, G. Pizarro and O. Pizarro (European Southern
Observatory). 100-cm Schmidt telescope. Measurer: R. M. West.
Condensed image with tail 15" north-northeast on Mar. 20.
E. Roemer and L. M. Vaughn (Steward Observatory, Kitt Peak Station).
229-cm reflector. Measurer: Roemer. Apr. 4: near edge
of field. Apr. 5: poor seeing, comet large and poorly defined.
The following improved parabolic elements, by the undersigned,
are from observations Feb. 25 to Apr. 5:
T = 1975 Jan. 14.746 ET Peri. = 193.370
Node = 22.081 1950.0
q = 6.87955 AU Incl. = 112.016
1976 ET R. A. (1950) Decl. Delta r m2
May 2 10 01.16 -39 22.4 7.041 7.537 17.5
12 9 56.68 -38 31.4
22 9 53.53 -37 43.8 7.312 7.590 17.6
June 1 9 51.61 -37 01.4
11 9 50.77 -36 25.8 7.614 7.645 17.7
21 9 50.86 -35 58.1
July 1 9 51.75 -35 38.9 7.912 7.702 17.9
1963 UA
The following prediction, by B. G. Marsden, is from the orbit
on Minor Planet Circ. No. 3016. The formal mean error in the
current perihelion time T is +/- 1.5 days.
T = 1976 Oct. 5.8362 ET Epoch = 1976 Sept. 19.0 ET
Peri. = 191.0046 e = 0.530675
Node = 200.6955 1950.0 a = 2.643761 AU
Incl. = 11.0515 n = 0.2292825
q = 1.240784 AU P = 4.299 years
For dT = +1d
1976/77 ET R. A. (1950) Decl. Delta r dR.A. dDecl. Mag.
May 2 21 36.71 - 2 32.7 1.998 2.008 -1m49 - 5'1 20.1
12 21 55.62 - 0 19.5 -1.67 - 5.8
22 22 14.91 + 2 03.3 1.681 1.876 -1.87 - 6.5 19.7
June 1 22 34.75 + 4 35.1 -2.12 - 7.3
11 22 55.31 + 7 14.8 1.386 1.744 -2.41 - 8.1 19.2
21 23 16.90 +10 01.4 -2.77 - 8.9
July 1 23 39.83 +12 52.5 1.121 1.616 -3.20 - 9.6 18.7
11 0 04.53 +15 44.6 -3.72 -10.1
21 0 31.53 +18 32.7 0.894 1.496 -4.35 -10.3 18.1
31 1 01.36 +21 08.8 -5.10 - 9.8
Aug. 10 1 34.49 +23 21.4 0.710 1.390 -5.96 - 8.4 17.5
20 2 11.20 +24 55.9 -6.89 - 5.8
30 2 51.04 +25 34.4 0.572 1.307 -7.81 - 2.0 17.0
Sept. 9 3 32.74 +25 00.7 -8.59 + 2.5
19 4 14.19 +23 06.4 0.484 1.255 -9.10 + 6.2 16.5
29 4 52.71 +19 55.9 -9.31 + 7.0
Oct. 9 5 26.08 +15 47.7 0.440 1.241 -9.29 + 3.6 16.3
19 5 52.86 +11 08.5 -9.18 - 3.3
29 6 12.26 + 6 26.6 0.431 1.268 -9.09 -11.0 16.2
Nov. 8 6 24.23 + 2 07.2 -9.02 -16.5
18 6 29.18 - 1 28.9 0.448 1.330 -8.90 -18.2 16.1
28 6 27.99 - 4 04.9 -8.63 -16.1
Dec. 8 6 22.45 - 5 30.3 0.498 1.422 -8.12 -11.8 16.3
18 6 14.75 - 5 44.2 -7.41 - 6.9
28 6 07.21 - 4 55.1 0.595 1.533 -6.56 - 2.9 16.7
Jan. 7 6 01.77 - 3 20.6 -5.68 - 0.1
17 5 59.40 - 1 20.0 0.754 1.656 -4.86 + 1.6 17.4
27 6 00.44 + 0 50.1 -4.14 + 2.4
Feb. 6 6 04.72 + 2 57.5 0.976 1.786 -3.54 + 2.8 18.3
16 6 11.78 + 4 54.8 -3.03 + 2.9
26 6 21.16 + 6 38.0 1.250 1.918 -2.62 + 3.0 19.0
Mar. 8 6 32.39 + 8 05.3 -2.27 + 3.0
18 6 45.04 + 9 16.1 1.566 2.050 -1.99 + 3.0 19.7
28 6 58.78 +10 10.9 -1.75 + 3.0
Apr. 7 7 13.33 +10 50.2 1.908 2.180 -1.55 + 3.0 20.2
1976 April 16 (2941) Brian G. Marsden
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