Central Bureau for Astronomical Telegrams
IAUC 4053: 1985b; 1985H; QSO 1156+295; 1984e
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Read IAUC 4054
Circular No. 4053
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM Telephone 617-495-7244/7440/7444
PERIODIC COMET RUSSELL 1 (1985b)
J. Gibson reports his recovery of this comet with the 1.5-m
reflector and CCD at Palomar; the object is well condensed, with a
tenuous coma of diameter ~ 8"-10" and a hint of a tail of length ~
20" in p.a. 70. The indicated correction to the orbit on MPC
8289 is Delta-T = +0.01 day (ephemeris on MPC 9362).
1985 UT R.A. (1950.0) Decl. m2
Apr. 9.23887 10 22 19.04 -25 10 36.3 19.5
9.25234 10 22 19.04 -25 10 19.8
10.21347 10 22 25.02 -24 51 02.3
10.22153 10 22 25.03 -24 50 52.4
SUPERNOVA 1985H IN NGC 3359
J. C. Wheeler, Department of Astronomy, University of Texas,
reports that observations by C. Opal and E. Bozyan using a CCD at
McDonald Observatory on Apr. 12 UT show that there is indeed a new
object 34"8 west and 21"6 north of the nucleus of the galaxy at V =
16.4. The supernova appears as a small, point-like object in 1"2
seeing, and was quite distinct from the nucleus.
QSO 1156+295
B. Wills, Department of Astronomy, University of Texas,
communicates that W. Wisniewski, University of Arizona, has observed an
apparent major outburst of this optically-violent variable quasar
(cf. Wills et al. 1983, Ap. J. 274, 62), finding V = 11.9 +/- 0.1 on
Apr. 15 UT with the Mount Lemmon 1.5-m reflector. Wills also provides
the following B magnitudes obtained by A. Smith et al. at the
Rosemary Hill Observatory, University of Florida: Apr. 11, 14.0 +/-
0.16; 16, 14.2 +/- 0.1. The last major flare occurred in early 1981.
PERIODIC COMET GIACOBINI-ZINNER (1984e)
C. S. Morris and S. J. Edberg report a total visual magnitude
estimate of 15.5 was made with the 0.61-m reflector at Table Mountain
Observatory on Apr. 13.47 UT. The comet was of diameter ~ 15"
and quite diffuse. Astrometric observations are urgently needed in
connection with the ICE mission to this comet. An ephemeris is on
MPC 9168.
1985 April 18 (4053) Daniel W. E. Green
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