Central Bureau for Astronomical Telegrams
IAUC 2769: 1975e; NOVAE
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Read IAUC 2770
Circular No. 2769
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 SMIRNOVA-CHERNYKH (1975e)
The following positions have been reported:
1975 UT R. A. (1950) Decl. m1 m2 Observer
Apr. 3.53750 9 14 49.22 +23 54 26.0 14.5 Seki
4.59340 9 14 48.56 +23 52 45.5 "
11.34097 9 15.26 +23 40.5 ~18.4 Roemer
12.13206 9 15.2 +23 38 McCrosky
T. Seki (Kochi Observatory, Geisei Station).
E. Roemer (Lunar and Planetary Laboratory, Catalina Station). 154-cm
reflector. Comet pretty well condensed.
R. E. McCrosky (Harvard College Observatory, Agassiz Station). 41-cm
Metcalf astrograph.
The following parabolic elements, by B. G. Marsden, are based
also on the approximate positions on IAUC 2764 and are thus somewhat
uncertain. There is a possibility that the comet is yet another
new short-period one.
T = 1975 Nov. 15.28 ET Peri. = 139.31
Node = 70.21 1950.0
q = 2.5823 AU Incl. = 6.36
1975 ET R. A. (1950) Decl. Delta r m2
Apr. 8 9 14.93 +23 47.2
18 9 16.64 +23 23.7 2.957 3.394 18.2
28 9 20.37 +22 50.5
May 8 9 25.99 +22 08.2 3.100 3.268 18.1
18 9 33.38 +21 17.3
28 9 42.34 +20 18.2 3.245 3.148 18.0
NOVAE
The following selected visual magnitude estimates of the novae
GK Per and RS Oph have been made by U. Surawski at the Wilhelm
Foerster Observatory:
GK Per. Mar. 17.88 UT, 13.2:; 20.78, 13.4.
RS Oph. Feb. 10.16, 10.9; 23.14, 10.9:; 26.13, 11.0; Mar.
21.10, 11.1; 22.11, 11.1; 23.08, 11.0.
1975 April 15 (2769) Brian G. Marsden
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