[IAUC] IAUC 8780: C/2006 S12, C/2006 S13, C/2006 T2-T9; C/2006 W3 [25139-2007/05-R1]
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Circular No. 8780
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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COMETS C/2006 S12, C/2006 S13, C/2006 T2-T9 (SOHO)
Additional apparent comets have been found on SOHO website
images (cf. IAUC 8774), all being Kreutz sungrazers except C/2006
T6 (Meyer group). K. Battams notes that C/2006 S12 was small,
stellar in appearance, and around mag 6 in C3 coronagraph images,
while it appeared slightly diffuse with no tail in C2 images.
C/2006 S13 was very small and around mag 7 in C3 frames, and it
appeared small, quite diffuse, and extremely faint in C2 exposures.
C/2006 T2 was small, stellar in appearance, and around mag 6 in C3
images, and quite diffuse and faint in C2 frames. C/2006 T3 was
tiny, stellar in appearance, and of mag about 7.5 in C3 exposures,
but it appeared very diffuse and faint in C2 images. C/2006 T4
(which was also found by T. Chen) was diffuse and extremely faint
(mag 7.5-8.0) in C3 images, and extremely diffuse and faint in C2
frames. C/2006 T5 was slightly diffuse, extremely small, and faint
(mag about 8). C/2006 T6 was tiny and stellar in appearance in all
exposures, being very faint (mag 7.5-8) in C3 frames and fading
rapidly in C2 images. C/2006 T7 and C/2006 T9 were extremely faint
(mag about 8.5) and diffuse with no tail. C/2006 T8 was tiny,
stellar in appearance, and of mag about 7.5 in C3 images, while C2
frames showed it to be faint and diffuse with a hint of tail.
Comet 2006 UT R.A.(2000)Decl. Inst. F MPEC
C/2006 S12 Sep. 26.763 11 48.2 - 2 50 C3/2 RM 2006-W64
C/2006 S13 30.433 12 11.9 - 3 48 C3/2 HS 2006-W64
C/2006 T2 Oct. 2.113 12 11.4 - 4 52 C3/2 RM 2006-W64
C/2006 T3 3.263 12 21.6 - 4 59 C3/2 HS 2006-W64
C/2006 T4 3.279 12 21.5 - 5 01 C3/2 GS 2006-W64
C/2006 T5 6.314 12 40.7 - 5 43 C2 WX 2006-W65
C/2006 T6 9.904 12 49.9 - 5 28 C3/2 BZ 2006-W65
C/2006 T7 10.379 12 54.7 - 7 18 C2 BZ 2006-W65
C/2006 T8 15.429 13 08.2 - 9 54 C3/2 TH 2006-W65
C/2006 T9 15.881 13 15.6 - 9 35 C2 TH 2006-W65
COMET C/2006 W3 (CHRISTENSEN)
Improved orbital elements (cf. IAUC 8777) from MPEC 2006-W76:
T = 2009 Apr. 23.508 TT Peri. = 142.308
Node = 112.317 2000.0
q = 2.38612 AU Incl. = 125.410
(C) Copyright 2006 CBAT
2006 November 26 (8780) Daniel W. E. Green
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