Central Bureau for Astronomical Telegrams
IAUC 4536: NO SN IN UGC 3933; 0535-668; 1986l; 1986k
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Read IAUC 4537
Circular No. 4536
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 617-495-7244/7440/7444
NO SUPERNOVA IN UGC 3933
A. V. Filippenko, University of California, Berkeley, reports:
"V. T. Junkkarinen, University of California at San Diego, used a
Cassegrain CCD spectrograph on the Shane 3-m reflector at Lick
Observatory to obtain a spectrum (range 430-710 nm, resolution 1.5-2
nm) of the supernova candidate in UGC 3933 (IAUC 4534) on Jan. 25.
A verbal description of the spectrum suggests that the object is an
M star; it is very red, and exhibits broad undulations at the
wavelengths of molecular bands in late-type stars. The object is not
visible on the red Palomar Sky Survey plate, suggesting that it is
a long-period variable star (e.g., Mira-type). No other stars having
roughly the reported brightness were visible on the TV acquisition
screen near the position of the SN candidate." R. Fesen, K.
Bjorkman, and J. Doggett, University of Colorado, report an observation
of this object using the 0.6-m telescope (+ CCD) at Summers-
Bausch Observatory; the object (R = 17.2) is located 19" east and
9" north of the galaxy's center.
0535-668
J. Menzies, South African Astronomical Observatory, telexes:
"A spectrum by H. Winkler, University of Cape Town, on Jan. 11
(phase 0.1) shows strong, narrow He II (469 nm), strong H-alpha, H-beta,
weak He I (588 nm), and weak N III/C III (464-465 nm) emission; the
He II flux is about 1.5 times that of H-beta. The magnitude was V
about 15. This seems to confirm the return to active state (cf.
IAUC 4519)."
COMET WILSON (1986l)
Total visual magnitude estimates (L = reflector): 1987 Dec.
18.06 UT, 11.3 (M. V. Zanotta, near Como, Italy, 0.41-m L); 27.78,
11.4 (J. Kobayashi, Kumamoto, Japan, 0.31-m L); 1988 Jan. 9.20,
11.6 (A. Hale, Las Cruces, NM, 0.41-m L); 20.99, 12.5 (J. Shanklin,
Cambridge, England, 0.2-m refractor); 23.42, 11.8 (Hale).
PERIODIC COMET KOHOUTEK (1986k)
Total visual magnitude estimates (cf. IAUC 4503): 1987 Dec.
18.03 UT, 13.3 (Zanotta); 27.78, 12.3 (Kobayashi; 1'.5 tail in p.a.
180 deg); 1988 Jan. 10.13, 13.1 (E. A. Jacobson, Evansville, MN, 0.25-
m reflector); 13.28, 13.0 (Hale); 23.46, 12.8 (Hale).
1988 January 25 (4536) Daniel W. E. Green
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