Supernovae 1987S, 1988af, 1988ag, 1996co
Abstract
Jean Mueller reports her discoveries of four apparent supernovae on photographs taken with the 1.2-m Oschin Schmidt Telescope in the course of the second Palomar Sky Survey: SN UT R.A. (2000) Decl. Mag. Offset 1987S 1987 Aug. 28 21 49 45.05 +12 12 54.4 18 3" E, 10" N 1988af 1988 Nov. 19 8 17 24.36 +45 38 24.9 17.5 5".8 E, 7".6 S 1988ag 1988 Dec. 11 9 56 45.85 + 6 56 22.5 18 8".7 E, 7" N 1996co 1996 Dec. 20 10 18 57.48 +62 15 12.1 18 5".2 W, 9".2 S SN 1987S also appears at mag about 19 on a sky-survey plate taken by J. Phinney and Mueller on 1987 Sept. 17; no object appears at the position of SN 1987S on the Digitized Sky Survey or on a IIIa-F sky-survey plate taken on 1990 Oct. 22 by C. Brewer and J. D. Mendenhall. SN 1988af in MCG +08-15-057, discovered on a plate taken by P. Moniot, also appears at mag about 20 on another survey plate taken on 1989 Feb. 27 by Moniot and Brewer; there is no object at the position of SN 1988af on the Digitized Sky Survey or on a sky-survey plate taken on 1990 Mar. 18 by Mueller. SN 1988ag, discovered on a plate taken by Brewer and Mueller, also appears at mag about 18.5 on a 0.46-m Palomar Schmidt telescope film taken by E. M. and C. S. Shoemaker (identified by B. Skiff and C. S. Shoemaker) on 1989 Jan. 9; there is no object at the position of SN 1988ag on the Digitized Sky Survey or on a IIIa-F sky-survey plate taken on 1997 Mar. 9 by Mueller and Mendenhall. SN 1996co, discovered on a plate taken by K. Rykoski and Mendenhall, also appears at mag about 20 on a sky-survey plate taken on 1997 Jan. 11 by Mueller. There is nothing at the position of SN 1996co on a sky-survey plate taken on 1997 May 6 or on CCD frames taken by R. Gal with the Palomar 1.5-m telescope on 1997 May 1.
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- October 1998
- Bibcode:
- 1998IAUC.7029....1M