Central Bureau for Astronomical Telegrams
IAUC 3814: 1983f; SN IN NGC 4753; Corrs
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Read IAUC 3815
Circular No. 3814
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 617-864-5758
COMET IRAS (1983f)
J. Davies, University of Leicester, telexes that a moving
object, possibly extended, has been discovered by the Infrared
Astronomical Satellite. K. S. Russell, U.K. Schmidt Telescope
Unit, has confirmed the object as almost stellar in appearance,
with just a trace of nebulosity, perhaps 1' in diameter. The
following semiaccurate positions are available:
1983 UT R.A. (1950.0) Decl. m1 Observer
May 13.133 9 16.89 -15 19.7 IRAS
13.205 9 16.89 -15 17.5 "
18.35660 9 15 50s5 -12 44 24" 17 Russell
18.49944 9 15 50.1 -12 40 36 "
SUPERNOVA IN NGC 4753
C. J. Peterson, University of Missouri at Columbia, writes:
" UBV photometry on Apr. 10-11 at Cerro Tololo and on Apr. 17-19 at
Kitt Peak yields: Apr. 10.159 UT, V = 12.77, B-V = +0.26, U-B =
+0.31; 11.138, 12.80, +0.28, +0.35; 17.269, 13.23, +0.63, +0.26;
18.282, 13.18, +0.68, +0.29; 19.267, 13.25, +0.70, +0.22. Correction
for the background light of the galaxy was difficult because
of the proximity of the supernova to the galaxy's nucleus; the
luminosity of the galaxy exhibits a substantial gradient across
the position of the supernova. These data suggest, however, a
photometric behavior typical of a Type I supernova (cf., for
example, Lee et al. 1972, Ap.J. 177, L59)."
R. Evans, Maclean, N.S.W., writes that his visual observations
suggest that this object was 0.2 mag brighter on Apr. 10.6
UT than on Apr. 6.6 and 9.6.
CORRIGENDA
IAUC 3792, Supernovae, line 8. For -10deg55'55".0 read -0deg55'55".0.
IAUC 3798, line 11. For 0.12-m read 0.04-m.
IAUC 3802, line 16 from foot. For Angency read Agency.
IAUC 3808, line 10. For 9.92009 read 9.92019.
IAUC 3811, line 6. For 0.5 +/- 0.1 read 0".5 +/- 0".1.
1983 May 20 (3814) Brian G. Marsden
Read IAUC 3815
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