Central Bureau for Astronomical Telegrams
IAUC 3153: 1977i; 1977m
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Read IAUC 3154
Circular No. 3153
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 Telex: 921428
Telephone: (617) 864-5758
PERIODIC COMET TEMPEL 1 (1977i)
Extension of the ephemeris on IAUC 3015:
1978 ET R. A. (1950) Decl. Delta r m2
Feb. 1 18 46.48 -24 34.7 2.271 1.512 17.1
11 19 20.20 -24 32.7
21 19 52.92 -24 06.8 2.238 1.553 17.2
Mar. 3 20 24.33 -23 20.7
13 20 54.19 -22 18.5 2.210 1.616 17.3
23 21 22.35 -21 04.6
Apr. 2 21 48.75 -19 43.5 2.176 1.698 17.5
12 22 13.36 -18 19.2
22 22 36.18 -16 55.5 2.129 1.794 17.7
May 2 22 57.23 -15 35.6
12 23 16.50 -14 22.4 2.062 1.900 17.9
22 23 33.95 -13 18.6
June 1 23 49.54 -12 26.3 1.975 2.013 18.0
11 0 03.15 -11 47.6
21 0 14.63 -11 24.2 1.869 2.129 18.1
July 1 0 23.80 -11 17.5
11 0 30.40 -11 28.5 1.756 2.247 18.2
21 0 34.22 -11 57.2
31 0 35.06 -12 42.5 1.656 2.366 18.3
Aug. 10 0 32.80 -13 41.4
20 0 27.58 -14 48.7 1.602 2.483 18.5
30 0 19.83 -15 57.2
Sept. 9 0 10.29 -16 58.4 1.627 2.599 18.7
19 0 00.05 -17 44.7
29 23 50.20 -18 11.1 1.756 2.713 19.1
Oct. 9 23 41.73 -18 15.5
19 23 35.34 -17 59.3 1.987 2.824 19.5
29 23 31.33 -17 25.2
Nov. 8 23 29.75 -16 36.6 2.299 2.933 20.0
18 23 30.45 -15 36.8
28 23 33.15 -14 28.6 2.663 3.038 20.5
COMET KOHLER (1977m)
Further precise positions have been reported as follows:
1977 UT R. A. (1950) Decl. m1 Observer
Oct. 24.82950 17 50 15.47 + 4 47 59.1 Waterfield
29.38090 18 10 36.44 + 1 08 41.0 8.0 Furuta
29.38472 18 10 37.38 + 1 08 27.7 "
29.66528 18 11 55.40 + 0 54 23.8 Raudsaar
29.70556 18 12 06.47 + 0 52 24.3 "
Nov. 3.37708 18 34 23.80 - 3 07 48.6 Furuta
3.37951 18 34 24.71 - 3 07 58.3 "
3.72977 18 36 08.16 - 3 26 26.0 Milet
3.75297 18 36 14.96 - 3 27 40.6 "
4.07442 18 37 50.13 - 3 44 39.9 Giclas
4.73170 18 41 06.28 - 4 19 32.6 6.5 Debehogne
4.79937 18 41 26.39 - 4 23 09.8 "
5.71353 18 46 01.75 - 5 11 54.9 6.3 Mrkos
5.71457 18 46 02.01 - 5 11 57.2 "
6.72006 18 51 08.09 - 6 05 52.5 6.2 "
6.72116 18 51 08.54 - 6 05 56.1 "
7.70615 18 56 11.77 - 6 58 57.8 6.1 "
7.70711 18 56 11.81 - 6 58 59.8 "
7.73250 18 56 19.71 - 7 00 23.8 6.5 Debehogne
7.74731 18 56 24.22 - 7 01 11.9 "
9.75849 19 06 52.63 - 8 49 43.2 Milet
10.71040 19 11 54.71 - 9 41 11.5 6.0 Mrkos
10.71139 19 11 55.01 - 9 41 13.9 "
10.72520 19 11 59.41 - 9 41 58.8 Milet
10.72884 19 12 00.63 - 9 42 11.9 6.5 Debehogne
10.74979 19 12 07.20 - 9 43 15.8 Milet
10.76299 19 12 11.37 - 9 44 01.5 Debehogne
11.71679 19 17 16.60 -10 35 28.1 6.2 Mrkos
11.71888 19 17 17.32 -10 35 33.4 "
12.72408 19 22 41.99 -11 29 32.8 6.5 Debehogne
12.76251 19 22 54.35 -11 31 36.2 "
13.72932 19 28 09.19 -12 23 16.6 6.5 "
13.73417 19 28 10.84 -12 23 31.9 "
16.72822 19 44 40.48 -15 01 02.1 Milet
16.74726 19 44 46.76 -15 02 01.9 "
22.73000 20 18 37.93 -19 58 17.0 "
22.74334 20 18 42.52 -19 58 52.0 "
R. L. Waterfield and I. M. Purcell (Woolston Observatory).
T. Furuta (Kagiya). From Orient. Astron. Assoc. Comet Bull. No. 157.
H. K. Raudsaar (Tartu Obs.). Reduced at I.T.A., Leningrad.
B. Milet (Nice Observatory).
H. L. Giclas (Lowell Observatory). Measurer: M. L. Kantz.
H. Debehogne (Royal Observatory, Uccie).
A. Mrkos (Klet Observatory).
Further total visual magnitude estimates: Nov. 19.00 UT, 7.1
(J. Bortle, Brooks Observatory, 10 x 50 binoculars); 26.03, 7.1 (P.
Maley, Houston, Texas, 7 x 35 binoculars); Dec. 3.04, 7.1 (Maley);
7.97, 7.4 (Bortle); 13.00, 7.3 (V. F. de Assis Neto, Sao Francisco
de Oliveira, Brazil, 31-cm reflector). Corrigendum: on IAUC 3137
the magnitude formula should read m1 = 6.5 + 5 log Delta + 10 log r.
1977 December 27 (3153) Brian G. Marsden
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