Central Bureau for Astronomical Telegrams
IAUC 4938: 1990A; 1989f1
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Circular No. 4938
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
SUPERNOVA 1990A IN NGC 500
C. Pollas, CERGA, has discovered another possible supernova at R.A.
= 1h20m04s.12, Decl. = +5d07'41".2 (equinox 1950.0), 10".2 east and 6".6
north of the center of NGC 500. There is a faint nearby star at end
figures 14s.67, 41".7. The object was of mag about 19.5 on the Jan.
1.01 UT exposure (IIIa-F emulsion, RG 610 filter). A confirmatory
observation by A. Maury on Jan. 2.95 suggested that the object was
of mag about 18 (15301 plate, no filter). NGC 500 is of mag about 15.
COMET McKENZIE-RUSSELL (1989f1)
The following precise positions have been reported:
1989 UT R.A. (1950) Decl. m1 Observer
Dec. 19.59848 5 14 30.0 + 3 20 56 13 Sato
19.61858 5 14 21.7 + 3 20 34 "
27.81424 4 22 50.49 + 1 11 06.0 12 Rychtarcik
27.87685 4 22 28.57 + 1 10 17.6 "
28.50544 4 18 59.43 + 1 02 00.4 14 Kojima
28.51516 4 18 56.17 + 1 01 52.2 "
28.59867 4 18 28.15 + 1 00 45.8 14.5 Hioki
28.60770 4 18 25.79 + 1 00 34.3 "
30.44931 4 08 40.16 + 0 37 55.7 14 Kakei
30.46667 4 08 34.79 + 0 37 44.0 "
N. Sato (Chichibu, Japan). Prediscovery image. 0.25-m f/4.2 Wright-
Schmidt. Poor image. Diffuse with condensation; tail about 3' long
in p.a. 50 deg. Measurer H. Kosai. Long. = +139d08'45", Lat. =
+35d57'24", altitude = 800 m.
P. Rychtarcik (Skalnate Pleso). Observations in response to an independent
discovery of the comet by Antonin Mrkos (Klet) on Dec. 26.83.
T. Kojima (YGCO Chiyoda Station). 0.25-m f/3.4 Wright-Schmidt.
T. Hioki (Okutama). Measurer S. Hayakawa.
W. Kakei (Oohira). Measurer T. Urata.
Improved parabolic orbital elements by S. Nakano, Center for
Astrophysics, from 12 observations 1989 Dec. 19-30:
T = 1989 Nov. 7.718 ET Peri. = 191.760
Node = 293.203 1950.0
q = 1.97592 AU Incl. = 160.328
1990 January 4 (4938) Brian G. Marsden
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