Central Bureau for Astronomical Telegrams
IAUC 5465: 1987Q, 1987R; 1991g1
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Circular No. 5465
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
SUPERNOVAE 1987Q AND 1987R
Jean Mueller reports her discovery of two apparent supernovae
on photographs taken by herself on 1987 Nov. 30 with the 1.2-m
Oschin Telescope in the course of the second Palomar Sky Survey. SN
1987Q in UGC 3845 (R.A. = 7h23m.0, Decl. = +47 12', equinox 1950.0)
was at blue mag about 16 and located 15".5 west and 49" south of the
galaxy's nucleus, in a spiral arm. SN 1987R in MCG +07-16-001 (R.A.
= 7h21m.8, Decl. = +42 07') was at blue mag about 18.5 and located
9".4 west and 6".7 south of the galaxy's center. Neither SN 1987Q
nor SN 1987R is visible on original POSS prints, and N. Reid reports
that neither appears on a red plate taken 1987 Jan. 3 by G. Carlson
in the course of the second POSS.
COMET ZANOTTA-BREWINGTON (1991g1)
Ephemeris from orbital elements on MPC 19654:
1992 TT R. A. (2000) Decl. Delta r Elong. Phase m1
Feb. 28 1 42.54 -50 10.7 0.785 0.855 56.2 74.1 8.8
Mar. 4 2 04.34 -54 26.9 0.813 0.923 60.6 69.3 9.2
9 2 28.36 -58 07.0 0.841 0.994 65.0 64.9 9.6
14 2 55.56 -61 14.7 0.868 1.067 69.6 60.8 10.0
19 3 26.81 -63 51.2 0.895 1.142 74.1 57.0 10.3
24 4 02.73 -65 55.1 0.922 1.218 78.6 53.4 10.7
29 4 43.33 -67 23.0 0.950 1.293 83.1 50.0 11.0
Apr. 3 5 27.61 -68 10.9 0.980 1.369 87.5 46.9 11.3
8 6 13.47 -68 16.5 1.011 1.445 91.7 43.9 11.6
13 6 58.23 -67 40.9 1.046 1.520 95.7 41.0 11.9
18 7 39.61 -66 29.2 1.085 1.594 99.4 38.4 12.2
23 8 16.37 -64 49.1 1.129 1.668 102.7 36.0 12.5
28 8 48.30 -62 49.0 1.177 1.742 105.5 33.8 12.8
May 3 9 15.81 -60 36.8 1.232 1.815 107.8 31.9 13.0
8 9 39.55 -58 19.1 1.292 1.887 109.5 30.3 13.3
Total visual magnitude estimates (cf. IAUC 5452): Feb. 9.10 UT,
8.4: (A. Hale, Las Cruces, NM, 0.20-m reflector); 10.99, 7.4 (V. F.
de Assis Neto, Sao Francisco de Oliveira, Brazil, 10x70 binoculars).
1992 March 2 (5465) Daniel W. E. Green
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