Central Bureau for Astronomical Telegrams
IAUC 7638: 2001ci; NO 2001bh; C/2001 A2
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Circular No. 7638
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)
SUPERNOVA 2001ci IN NGC 3079
A. V. Filippenko and R. Chornock, University of California at
Berkeley, report that a CCD spectrum (range 390-1000 nm), obtained
on May 30 UT with the Keck-II 10-m reflector, reveals that the
'possible supernova' in NGC 3079 (cf. IAUC 7618) is indeed a
supernova, of type Ic, about 2-3 weeks past maximum brightness.
The spectral shape is similar to that of SN 1990U at 12 days past
maximum (Matheson et al. 2001, A.J. 121, 1648), but extinguished by
5-6 mag at visual wavelengths.
NO SUPERNOVA 2001bh IN UGC 11635
Filippenko and Chornock add that a CCD spectrum (range
390-1000 nm), obtained on May 30 UT with the Keck-II 10-m
reflector, reveals that SN 2001bh (cf. IAUC 7622) is a Galactic
star at essentially zero redshift. The specific absorption lines
suggest a mid-K to late-K spectral type, although the overall
continuum shape is significantly bluer.
COMET C/2001 A2 (LINEAR)
Ephemeris extension to IAUC 7600 (elements on MPEC 2001-K14):
2001 TT R. A. (2000) Decl. Delta r Elong. Phase m1
May 31 5 00.71 -26 58.8 0.485 0.789 49.4 102.8 4.4
June 2 4 52.14 -27 17.7 0.462 0.796 49.5 104.3 4.3
4 4 42.60 -27 29.1 0.439 0.805 49.9 105.4 4.3
6 4 32.00 -27 31.5 0.416 0.816 50.5 106.3 4.2
8 4 20.29 -27 23.5 0.395 0.828 51.4 106.8 4.2
10 4 07.41 -27 03.6 0.373 0.842 52.5 106.9 4.1
12 3 53.28 -26 29.8 0.353 0.857 54.0 106.5 4.1
14 3 37.87 -25 40.3 0.334 0.873 55.9 105.7 4.0
16 3 21.13 -24 32.8 0.315 0.891 58.2 104.2 4.0
18 3 03.04 -23 05.2 0.299 0.910 61.1 102.2 4.0
20 2 43.65 -21 15.6 0.284 0.930 64.5 99.6 4.0
22 2 23.02 -19 02.7 0.271 0.951 68.4 96.3 3.9
24 2 01.30 -16 26.3 0.260 0.972 72.9 92.3 4.0
26 1 38.70 -13 27.9 0.252 0.994 77.9 87.8 4.0
28 1 15.52 -10 11.2 0.246 1.017 83.3 82.8 4.0
30 0 52.10 - 6 42.0 0.244 1.041 89.0 77.5 4.1
(C) Copyright 2001 CBAT
2001 May 30 (7638) Daniel W. E. Green
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