[IAUC] IAUC 8813: 2007V, 2007W, 2007X, 2007Y, 2007Z; C/2006 W5, C/2006 W6, C/2006 W7, C/2006 X2 [25139-2007/05-R1]

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                                                  Circular No. 8813
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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Phone 617-495-7440/7244/7444 (for emergency use only)


SUPERNOVAE 2007V, 2007W, 2007X, 2007Y, 2007Z
     Five apparent supernovae have been discovered on unfiltered
CCD frames and reported to the Central Bureau:  2007V by N.
Joubert and W. Li (LOSS/KAIT; cf. IAUC 8804); 2007Z by E. J.
Christensen (Mt. Lemmon Survey 1.5-m telescope); and the rest by L.
A. G. Monard (Pretoria, S. Africa, 0.35-m reflector).  Discovery
observations:

SN      2007 UT       R.A.  (2000.0)  Decl.    Mag.     Offset
2007V   Feb. 12.46   10 27 05.58  - 3 18 05.1  17.9  0".3 E, 1".8 S
2007W   Feb. 15.037  13 21 48.50  -13 12 56.9  17.1  8" W, 33" S
2007X   Feb. 15.068  14 30 14.50  -36 57 53.1  15.3  30" E, 2" S
2007Y   Feb. 15.774   3 02 35.92  -22 53 50.1  17.5  24" W, 110" S
2007Z   Feb. 17.221   5 15 42.68  +19 21 49.5  17.5  10".4 W, 2".7 N

Additional information is available on these objects on the
following Electronic Telegrams:  2007V, CBET 841 (type Ia,
discovered about 1 month past maximum); 2007W in NGC 5105, CBETs
844 and 846 (type II); 2007X in ESO 385-G32, CBETs 844 and 849
(young type II); 2007Y in NGC 1187, CBET 845; 2007Z in PGC 16993,
CBETs 847 and 849 (young type II).  Additional LOSS/KAIT magnitudes
for 2007Y from R. Mostardi and W. Li:  2006 Dec. 24.27 UT, [18.1;
2007 Jan. 19.23, [17.5; 26.21, [17.3; Feb. 15.15, 16.7 (independent
discovery).  Li provides position end figures 35s.94, 49".4 for
2007Y.


COMETS C/2006 W5, C/2006 W6, C/2006 W7, C/2006 X2 (SOHO)
     Additional Kreutz sungrazing comets have been found on SOHO
website images (cf. IAUC 8811).  K. Battams notes that C/2006 W5
appeared as a fuzzy streak about 2' long and quite faint (mag about
7.5).  C/2006 W6 was very small, quite diffuse, and very faint (mag
8).  C/2006 W7 was also very small and faint (mag about 7.5), and
slightly diffuse.  C/2006 X2 was very diffuse, faint, and somewhat
elongated.

 Comet       2006 UT       R.A.(2000)Decl.  Inst.  F    MPEC
 C/2006 W5   Nov. 20.004  15 40.3   -21 16   C2    TH   2007-B76
 C/2006 W6        20.038  15 40.2   -21 21   C2    TH   2007-B76
 C/2006 W7        25.479  16 03.1   -22 28   C2    RK   2007-B76
 C/2006 X2   Dec.  9.049  17 04.6   -24 41   C2    RK   2007-B76

                      (C) Copyright 2007 CBAT
2007 February 26               (8813)            Daniel W. E. Green