Central Bureau for Astronomical Telegrams
IAUC 3057: N Sgr 1977; P/GUNN; 1976k; ROMAN NUMERAL DESIGNATIONS OF COMETS IN 1975
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Read IAUC 3058
Circular No. 3057
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
NOVA SAGITTARII 1977
D. R. Fawell, University of London Observatory, reports the
following preliminary position, measured by C. E. Chapman from a
plate taken with the 61-cm Radcliffe refractor: R.A. = 18h35m11s.83, Decl.
= -23o25'27".6 (equinox 1950.0). Y. Kozai, Tokyo Observatory, also
reports a position, obtained by Hamajima and Ishida with the 105-cm
Schmidt telescope at Kiso; end figures are 11s.82, 26".0.
J. Mattei, American Association of Variable Star Observers,
provides the following visual magnitude estimates by J. Morgan:
Mar. 31.51 UT, 8.8; Apr. 3.45, 9.1; 4.50, 8.8; 5.51, 9.3.
PERIODIC COMET GUNN
The following precise position was obtained by P. Jekabsons
with the 33-cm astrograph at the Perth Observatory:
1976 UT R. A. (1950) Decl.
Nov. 16.58009 21 36 49.72 -25 29 19.6
The following osculating elements, by B. G. Marsden, are from
43 observations made between 1970 and 1976:
Epoch = 1969 Apr. 9.0 1976 Jan. 23.0 1982 Nov. 7.0 ET
T = 1969 Apr. 18.8768 1976 Feb. 10.8266 1982 Nov. 26.8565 ET
Peri. = 197.1180 197.4802 196.9847
Node = 68.0371 67.9766 67.8849 1950.0
Incl. = 10.3940 10.3879 10.3831
q = 2.441473 2.444534 2.459141 AU
e = 0.319521 0.319079 0.316361
a = 3.587875 3.590040 3.597134 AU
n = 0.1450268 0.1448956 0.1444672
P = 6.796 6.802 6.822 years
1977/78 ET R. A. (1950) Decl. Delta r m2
May 17 1 23.47 + 0 56.9 4.250 3.490 18.6
27 1 34.29 + 1 58.5
June 6 1 44.54 + 2 54.0 4.117 3.549 18.6
16 1 54.14 + 3 43.0
26 2 02.95 + 4 25.0 3.936 3.607 18.5
July 6 2 10.86 + 4 59.7
16 2 17.74 + 5 26.8 3.719 3.664 18.5
26 2 23.41 + 5 46.1
Aug. 5 2 27.73 + 5 57.2 3.484 3.720 18.4
15 2 30.53 + 6 00.3
25 2 31.66 + 5 55.4 3.256 3.775 18.3
Sept. 4 2 31.04 + 5 42.9
14 2 28.64 + 5 23.8 3.067 3.829 18.3
24 2 24.54 + 4 59.3
Oct. 4 2 18.99 + 4 31.4 2.953 3.881 18.2
14 2 12.35 + 4 02.8
24 2 05.14 + 3 36.2 2.946 3.932 18.3
Nov. 3 1 57.94 + 3 14.5
13 1 51.31 + 3 00.2 3.060 3.982 18.4
23 1 45.75 + 2 54.8
Dec. 3 1 41.59 + 2 59.2 3.283 4.030 18.6
13 1 39.03 + 3 13.4
23 1 38.13 + 3 36.9 3.587 4.077 18.9
Jan. 2 1 38.85 + 4 08.5
12 1 41.09 + 4 47.2 3.933 4.122 19.1
22 1 44.70 + 5 31.7
Feb. 1 1 49.54 + 6 20.9 4.286 4.166 19.4
11 1 55.43 + 7 13.7
21 2 02.24 + 8 08.9 4.618 4.208 19.6
Mar. 3 2 09.83 + 9 05.7
13 2 18.07 +10 03.3 4.906 4.249 19.7
COMET LOVAS (1976k)
The followinq precise position was obtained by R. E. McCrosky
at Harvard Observatory's Agassiz Station. Measurer: J. H. Bulger.
1976 UT R. A. (1950) Decl.
Dec. 16.35952 8 37 00.91 +73 24 17.4
ROMAN NUMERAL DESIGNATIONS OF COMETS IN 1975
Comet T Name Year/letter Ref.
1975 I Jan. 5.6 P/Boethin 1975a * 18, **
II Jan. 15.5 Schuster 1976c IAUC 2958
III Jan. 18.2 P/Kohoutek 1975c * 18, **
IV Feb. 25.8 P/West-Kohoutek-Ikemura 1975b * 18, **
V Apr. 4.6 Bradfield 1975d * 18, **
VI May 24.7 P/Arend 1975m IAUC 2848
VII Aug. 6.5 P/Smirnova-Chernykh 1975e IAUC 2918
VIII Aug. 22.2 Lovas 1974c IAUC 3035
IX Sept. 5.3 Kobayashi-Berger-Milon 1975h * 18, **
X Oct. 15.4 Suzuki-Saigusa-Mori 1975k * 18, **
XI Dec. 21.2 Bradfield 1975p * 18, **
XII Dec. 25.9 Mori-Sato-Fujikawa 1975j IAUC 3028
* Quarterly Journal of the Royal Astronomical Society. ** In press.
1977 April 6 (3057) Brian G. Marsden
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