Central Bureau for Astronomical Telegrams
IAUC 6357: 1996P; C/1996 B2; 22P
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Circular No. 6357
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
Phone 617-495-7244/7440/7444 (for emergency use only)
SUPERNOVA 1996P IN NGC 5335
J. Mueller reports her discovery of a supernova (mag about 17)
found on a IIIa-J plate taken on Mar. 25 UT by K. M. Rykoski and
herself with the 1.2-m Oschin Schmidt telescope in the course of
the second Palomar Sky Survey. SN 1996P is located 57".8 west and
22" south of the center of NGC 5335 (R.A. = 13h53m.0, Decl. =
+2o50', equinox 2000.0). No object appears at this position on
original Sky Survey prints or on a second Sky Survey transparency
taken by Mueller and D. J. Mendenhall on 1990 May 18.
B. Balick, A. Riera, Y. Terzian, and K. Xilouris report that
an uncalibrated spectrogram (range 350-750 nm, resolution 0.3 nm,
2000-s exposure), obtained with the Hale 5-m telescope (+ double
spectrograph), shows that emission lines of H-alpha, He II at
468.6 nm, and [O I] at 630.0 nm, as well as an absorption line of
He I at 587.6 nm, appear to be present.
A. V. Filippenko and D. C. Leonard, University of California
at Berkeley, report that inspection of a CCD spectrogram (range
430-700 nm, resolution 0.7 nm), obtained on Mar. 27 with the 3-m
Shane reflector at Lick Observatory, reveals that SN 1996P is a
supernova of type Ia, roughly 1.5-2 months past maximum brightness.
COMET C/1996 B2 (HYAKUTAKE)
G.-P. Tozzi, Osservatorio Astrofisico di Arcetri (OAA),
writes: "Preliminary analysis of infrared observations of comet
C/1996 B2 taken by F. Lisi and E. Oliva (OAA) and P. Patriarchi
(CNR Gruppo Nazionale di Astronomia) at the TIRGO telescope on Mar.
25.93 UT shows a blob in the comet's tail with a maximum intensity
of about 10 percent of the comet's central condensation in the J
band. The blob was at a projected distance of about 18",
corresponding to 1350 km at the comet distance. Later observations
have shown that the blob moved 3".3 in the tail direction in about
4 hr (corresponding projected linear distance 250 km; deduced
velocity, about 17 m/s, assuming that the blob is moving along the
tail direction)."
COMET 22P/KOPFF
Total visual magnitude estimates: Feb. 26.13 UT, 12.0 (K.
Hornoch, Lelekovice, Czech Republic, 0.35-m reflector); Mar. 17.45,
11.3 (A. Hale, Cloudcroft, NM, 0.41-m reflector); 24.16, 11.7 (J.
Carvajal, Teruel, Spain, 0.44-m reflector).
(C) Copyright 1996 CBAT
1996 March 27 (6357) Daniel W. E. Green
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