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IAUC 8807: V1280 Sco; 2006tg-2006ue; C/2003 C6

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IAUC number

                                                  Circular No. 8807
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

     This nova (cf. IAUC 8803) has brightened greatly in the last
week.  Selected visual magnitude estimates (some from H. Yamaoka
via VSNET, and some sent by E. Waagen, AAVSO):  Feb. 8.323 UT, 8.0
(A. Amorim, Florianopolis, Brazil); 10.844, 7.5 (K. Kanai, Gunma,
Japan); 11.794, 7.0 (Kanai); 12.326, 6.5 (Amorim); 12.790, 6.2
(Kanai); 12.86, 6.6 (Y. Sakurai, Mito, Ibaraki-ken, Japan; via S.
Nakano); 13.246, 6.0 (J. Ripero, Madrid, Spain); 14.782, 5.4 (Kanai);
15.215, 5.2 (Ripero); 15.851, 4.5 (Kanai); 16.212, 4.2 (W. Kriebel,
Schierling/Walkenstetten, Germany); 16.323, 3.9 (Amorim); 16.231,
3.8 (P. Schmeer, Bischmisheim, Germany); 16.458, 3.7 (M. Simonsen,
Imlay City, MI).
     H. Yamaoka, Kyushu University, writes that low-resolution
spectroscopy obtained by M. Fujii (Ibara, Okayama, Japan) on Feb.
12.88 and 14.83 UT, and by H. Naito (Nishi-Harima Astronomical
Observatory) on Feb. 14.86, shows a much bluer continuum than in the
spectroscopy taken on Feb. 5.87 (cf. IAUC 8803); the new spectra
resemble the spectrum of an F-type star.  Balmer lines (relatively
weaker than in the Feb. 5 spectrum) show clear P-Cyg profiles
(expansion velocity about 500 km/s), along with other weak lines.

SUPERNOVAE 2006tg-2006ue
     Twenty supernova discoveries (designated 2006tg-2006tz), all
peaking in the magnitude range R = 20.5-23.5, have been reported by
P. Challis on behalf of the ESSENCE team; three were classified as
of type II, one of type Ic, and the rest of type Ia (details on
CBET 830).  Also, five new type-Ia supernovae (designated 2006ua-
2006ue) found at Steward Observatory, all in the magnitude range g
= 21.5-22.7, were reported by D. Sand et al. (details on CBET 831).

COMET C/2003 C6 (SOHO)
     An additional Kreutz sungrazing comet has been found on
archival SOHO website images (cf. IAUC 8805).  K. Battams notes
that C/2003 C6 was stellar in appearance and faint (mag about 8).

 Comet        2003 UT      R.A.(2000)Decl.   Inst.  F    MPEC
 C/2003 C6    Feb. 8.179  21 41.0   -16 21   C3     RK   2007-B75

                      (C) Copyright 2007 CBAT
2007 February 16               (8807)            Daniel W. E. Green

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