Central Bureau for Astronomical Telegrams
IAUC 3299: 1978n; SNe; N Cyg 1978
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Read IAUC 3300
Circular No. 3299
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 FUJIKAWA (1978n)
The following precise positions have been reported:
1978 UT R. A. (1950) Decl. m1 Observer
Oct. 11.80729 10 20 41.00 + 7 21 48.8 11 Seki
11.81667 10 20 40.20 + 7 22 20.8 "
11.82571 10 20 39.5 + 7 22 55 Urata
12.13507 10 20 10.17 + 7 40 06.6 Niemi
16.83576 10 15 04.2 +11 28 28 13 Seki
T. Seki (Geisei). On Oct. 16 the moon was bright, the comet image
weak and faint, diffuse and uncondensed.
T. Urata (JCPM Yakiimo Sta.). From Nihondaira Obs. Circ. No. 1022.
A. Niemi (Turku Observatory, Tuorla Station).
SUPERNOVAE
R. Kirshner, McGraw-Hill Observatory, communicates the following
photometric observations of P. Wild's Oct. 27 supernova (cf. IAUC 3297)
by J. McClintock on Oct. 31.3 UT: V = 15.39, B-V = +0.11,
U-B = -0.18. Spectrophotometric observations (range 3500-7000 A)
by D. Lewis show the supernova to be of type I, with the sharp
absorption near 6150 A seen only near maximum light.
R. M. West, European Southern Observatory, informs us that the
Zealey-Lee Sept. 23 supernova (cf. IAUC 3282, 3293) is not in the
interacting galaxy ESO 290-1G50 but in another interacting system ~
12' further south; the parent galaxy pair probably belongs to a
cluster of which ESO 290-1G49 is the brightest member.
NOVA CYGNI 1978
T. E. Margrave, University of Montana, continues his series of
observations (cf. IAUC 3296) as follows: Oct. 14.219 UT, V = 9.81,
B-V = +0.19, U-B = -0.65; 15.278, 9.92, +0.19, -0.72; 18.263, 9.90,
+0.17, -0.62; 20.276, 9.89, +0.14, -0.54; 22.348, 10.17, +0.12,
-0.51. V-filter monitoring during Oct. 14.245-14.305 UT revealed
variations of +/- 0.07 magnitude on a timescale of about an hour and
+/- 0.01-0.02 magnitude on a timescale of 2-3 min. Similar monitoring
during Oct. 18.289-18.343 UT exhibited variation with peak-to-peak
amplitude 0.065 magnitude on a timescale of about an hour and
fluctuations of +/- 0.01 magnitude on a timescale of 3-4 min.
1978 November 3 (3299) Brian G. Marsden
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