[IAUC] IAUC 8783: C/2006 T10, C/2006 U8-U11; C/2006 X1 [25139-2007/05-R1]
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Circular No. 8783
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
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COMETS C/2006 T10 AND C/2006 U8-U11 (SOHO)
Additional apparent comets have been found on SOHO website
images (cf. IAUC 8780), all being Kreutz sungrazers except C/2006
U10 (Meyer group). K. Battams notes that C/2006 T10 was small and
extremely faint (mag about 8.5). C/2006 U8 was tiny, stellar, and
faint (mag about 8.0) in C3 images, and extremely faint and diffuse
in C2 images. C/2006 U9 was small and stellar in appearance (mag
about 7) with big data gaps in C3 images, but slightly diffuse (mag
6.5-7) with a hint of a short tail in C2 images. C/2006 U10 was
stellar in appearance and very faint, fading out as it neared the
sun. C/2001 U11 appeared stellar and reached mag about 6.5 in C3
images, while it showed a stubby tail in C2 images.
Comet 2006 UT R.A.(2000)Decl. Inst. F MPEC
C/2006 T10 Oct. 12.538 13 03.0 - 8 15 C2 BZ 2006-X25
C/2006 U8 16.532 13 14.8 -11 01 C3/2 TS 2006-X25
C/2006 U9 19.679 13 20.4 -11 47 C3/2 SF 2006-X25
C/2006 U10 20.104 13 34.6 - 8 45 C2 TH 2006-X26
C/2006 U11 24.138 13 36.1 -13 37 C3/2 HS 2006-X26
COMET C/2006 X1 (LINEAR)
An apparently asteroidal object discovered by the LINEAR
survey, and posted on the Minor Planet Center's 'NEOCP' webpage,
has been found to have a coma of diameter 12" surrounding a central
condensation of diameter 5" on CCD images taken on Dec. 11.94-11.99
UT by P. Birtwhistle (Great Shefford, Berkshire, England, 0.40-m
Schmidt-Cassegrain reflector). A. R. Gibbs reports that four
co-added 120-s unfiltered CCD images taken in poor seeing with the
Mt. Lemmon 1.5-m reflector on Dec. 12.2 show a compact coma and a
narrow 90" tail in p.a. 260 deg.
2006 UT R.A. (2000) Decl. Mag.
Dec. 11.12465 0 10 06.42 +41 10 59.8 19.2
The available astrometry, the following preliminary parabolic
orbital elements, and an ephemeris appear on MPEC 2006-X41.
T = 2007 June 24.183 TT Peri. = 141.659
Node = 259.330 2000.0
q = 6.01297 AU Incl. = 40.731
(C) Copyright 2006 CBAT
2006 December 12 (8783) Daniel W. E. Green
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