Central Bureau for Astronomical Telegrams
IAUC 3124: 1977p; 1977o; RY Sgr
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Read IAUC 3125
Circular No. 3124
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
COMET SANGUIN (1977p)
C. U. Cesco, Observatorio Astronomico Felix Aguilar, cables
that J. G. Sanguin has discovered a probable comet with the 51-cm
double astrograph at El Leoncito. The comet has been confirmed by
H.-E. Schuster with the 100-cm Schmidt telescope at the European
Southern Observatory; the object was diffuse with some condensation
and a very faint tail to the northeast (in moonlight).
1977 UT R. A. (1950) Decl. m1 Observer
Oct. 15.06350 22 28.3 - 7 15 16 Sanguin
20.24306 22 34.3 - 8 20 15-16 Schuster
21.00938 22 35.3 - 8 29 "
PERIODIC COMET SCHUSTER (1977o)
R. M. West provides the following precise positions, measured
from exposures by Schuster and himself with the E.S.O. Schmidt.
The image of the comet was very faint on Oct. 12.09 UT, and the
star trails were very long on Oct. 14.04, 15.26 and 16.08 UT.
1977 UT R. A. (1950) Decl.
Oct. 9.16443 23 33 33.33 -36 59 39.7
10.27770 23 32 33.66 -36 44 49.6
11.08868 23 31 52.62 -36 33 37.3
12.08872 23 31 02.91 -36 19 16.3
13.07698 23 30 15.72 -36 04 33.2
14.03893 23 29 31.98 -35 49 43.1
15.03967 23 28 48.39 -35 33 47.0
15.26059 23 28 38.18 -35 30 08.6
16.08229 23 28 05.10 -35 16 36.5
17.11385 23 27 24.91 -34 59 05.1
J. Schubart, Astronomisches Rechen-Institut, reports that the
image on Sept. 6 (cf. IAUC 3123) indeed seems somewhat diffuse.
RY SAGITTARII
Recent visual magnitude estimates: Oct. 2.4 UT, 11.5 (V. L.
Matchett, Indooroopilly, Queensland); 3.4, 11.6 (Matchett); Oct.
10.21, 10.6 (J. Morgan, Prescott, Arizona); 13.14, 10.4 (Morgan);
16.16, 10.0 (Morgan); 19.11, 9.6 (P. Collins, Steward Observatory).
1977 October 21 (3124) Brian G. Marsden
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