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Circular No. 7608
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)
SUPERNOVAE
B. E. Schaefer, University of Texas at Austin, on behalf of
the QUEST collaboration (cf. IAUC 7387), reports on the discovery
of twelve apparent supernovae discovered with the QUEST 16-CCD
array camera at Llano del Hato. The total area searched was 254
deg**2 between Mar. 15 and 25 to R = 20.2. Nightly scans continued
until Apr. 4, so that the twelve objects all have well-sampled
3-color light curves over roughly three weeks, and many more
supernovae are expected to be found. Each apparent supernova was
found by subtraction of QUEST reference images taken between Mar. 3
and 8 and each new object has been confirmed via five or more
independent images taken on three or more nights with subtractions
from three independent reference images. Spectroscopy is still
needed for SNe 2001am, 2001as, 2001at, 2001au, 2001av, 2001aw, and
2001ax for identifying supernova type and redshift; though
spectroscopy has been obtained for the other objects, their types
and redshifts are not yet known.
SN 2001 UT R.A. (2000.0) Decl. R Offset
2001am Mar. 15 9 11 47.43 - 1 18 58.2 19.1 0" E, 0" N
2001an Mar. 15 10 05 35.76 - 1 28 42.0 19.1 3" W, 1" S
2001ao Mar. 15 10 13 45.70 - 1 24 51.8 19.9 1" W, 1" S
2001ap Mar. 15 12 18 23.32 - 1 54 48.5 18.9 0" E, 0" N
2001aq Mar. 15 14 01 33.76 - 0 59 48.7 19.9 1" W, 0" N
2001ar Mar. 15 14 40 53.46 - 0 39 24.6 18.7 0" E, 1" S
2001as Mar. 16 15 09 45.32 - 0 55 38.0 19.1 1" W, 0" N
2001at Mar. 16 15 10 09.06 - 0 58 29.2 18.8 0" E, 0" N
2001au Mar. 16 15 16 49.17 - 0 07 46.6 18.6 3" E, 3" N
2001av Mar. 23 15 43 02.92 - 2 02 20.0 20.2 4" E, 0" N
2001aw Mar. 20 15 55 32.11 - 0 10 54.6 19.5 0" E, 0" N
2001ax Mar. 20 16 07 13.69 - 0 04 49.2 17.5 0" E, 7" S
Corrigendum. On IAUC 7391, line 1, for Further to IAUC 7391,
read Further to IAUC 7387,
COMET 45P/HONDA-MRKOS-PAJDUSAKOVA
On Apr. 4.42 UT, K. Kadota, Ageo, Saitama, Japan, reports m_1
= 10.5 and coma diameter 0'.8 (0.18-m reflector + CCD). An
ephemeris for 45P appears on MPC 42593 (orbital elements on MPC
42548).
(C) Copyright 2001 CBAT
2001 April 9 (7608) Daniel W. E. Green
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