THE ASTRONOMER Electronic Circular No 254 1989 Jan 31 19.09UT.
Telecom Gold 72:MAG60138
Ed:Guy M Hurst, 16, Westminster Close, Kempshott Rise, Basingstoke,
Hants, RG22 4PP, England. Telephone:(0256)471074.Int:+44256471074
Telex:265871(MONREF G) Quote"72:MAG60138 ATT G.HURST"in FIRST line.
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SN 1989B IN M66
Rob McNaught e-mails a precise position for the supernova based on
an exposure on 1989 Jan 30.76UT with the Uppsala Southern Schmidt:
RA 11h17m37.40s DEC +13 16'45.4"(1950)
Offsets: 15.4"W; 50.3"N
G.M.Hurst provides the following very approximate offsets for
comparisons, the values of which have been revised since chart
860825 in accordance with 'Variable Stars' Vol 22 No3, 279, 1986:
V Approx offsets in arcsecs
1 9.76 100W 100N
A 13.45 250E 200N
B 13.71 500E 60S
a 14.09 200E 320S
c 14.37 320W 70N
b 14.53 570W 300S
e 15.22 470W 130N
d 15.23 30W 600N
f -
h 15.78 380W 230N
g 16.05 460W 30S
i -
m 16.52 450W 170N
COMET SHOEMAKER (1989f)
The following precise positions have been reported:
1989 UT R.A. (1950) Decl. m1 Observer
Jan. 28.51782 9 01 00.80 +51 37 27.3 16 Kojima
28.56296 9 00 59.62 +51 37 46.4 "
28.57986 9 00 58.86 +51 37 55.7 Niijima
28.60683 9 00 58.26 +51 38 06.4 "
28.61829 9 00 57.87 +51 38 11.0 "
T. Kojima (YGCO Chiyoda Observatory). 0.25-m f/3.4 Wright-Schmidt
camera.
T. Niijima and K. Kanai (Ojima). 0.30-m f/5.8 reflector.
Parabolic elements by S. Nakano from the seven available positions:
T = 1988 Nov. 2.096 ET Peri. = 18.873
Node = 73.642 1950.0
q = 2.21068 AU Incl. = 25.523
1989 ET R.A. (1950) Decl. Delta r m1
Jan. 14 9 06.60 +49 13.5 1.476 2.364 16.1
24 9 03.05 +51 01.4
Feb. 3 8 58.43 +52 09.9 1.583 2.454 16.4
13 8 54.21 +52 37.7
23 8 51.70 +52 28.5 1.772 2.559 16.8
Mar. 5 8 51.63 +51 48.8
15 8 54.26 +50 45.4 2.029 2.677 17.3
IAUC 4725
Guy M Hurst