[IAUC] IAUC 9039: COMET P/2009 H1 (LINEAR); C/2008 Y12-Y15 [25139-2009/08-R1]

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                                                  Circular No. 9039
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)


COMET P/2009 H1 (LINEAR)
     E. Guido, G. Sostero, P. Camilleri, and E. Prosperi report
their recovery of comet P/2002 LZ_11 (cf. IAUC 8240) on unfiltered
CCD exposures taken remotely with a 0.25-m reflector near Mayhill,
NM, U.S.A., on Apr. 17; co-added exposures show an extremely
compact coma about 12" in diameter and a short tail nearly 25" long
toward the west.  Confirming astrometry on Apr. 18 was obtained by
the same team remotely with a 0.37-m reflector near Sonoita, AZ,
U.S.A.; co-added exposures show a coma about 8" in diameter with a
faint extension toward the west.

     2009 UT             R.A. (2000) Decl.       Mag.
     Apr. 17.45321   18 07 32.66   -17 42 44.3   18.8
          18.37396   18 07 49.24   -17 38 42.0   19.4

     The indicated correction to the predictions on MPC 59599 and
in the 2008/2009 Comet Handbook is Delta(T) = -0.4 day.  The
following orbital elements by B. G. Marsden are from 154
observations spanning 2002 June 5-2009 Apr. 18 (mean residual 0".7).
Additional astrometry and orbital elements, residuals, and an
ephemeris appear on CBET 1772.

                    Epoch = 2010 Mar. 25.0 TT
     T = 2010 Mar.  5.73233 TT        Peri. = 107.76353
     e = 0.3532609                    Node  = 231.05130 2000.0
     q = 2.3643294 AU                 Incl. =  11.52093
       a =  3.6557699 AU   n = 0.14100542   P =   6.990 years


COMETS C/2008 Y12-Y15 (SOHO)
     Further to IAUC 9037, additional near-sun presumed comets have
been found on SOHO website images.  C/2008 Y12 and Kreutz sungrazer
C/2008 Y15 were stellar in appearance (mag about 7.5).  C/2008 Y13,
also a Kreutz sungrazer, appeared stellar (mag about 7-7.5) in C3
images, but was very diffuse, faint, and slightly elongated in C2
images.  C/2008 Y14 was very diffuse (mag about 8).

 Comet        2008 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/2008 Y12   Dec. 22.704   17 58.6  -22 42   C2     RK   2009-F17
 C/2008 Y13        27.888   18 36.1  -25 38   C3/2   AK   2009-F18
 C/2008 Y14        27.896   18 20.0  -22 43   C2     JR   2009-F18
 C/2008 Y15        29.821   18 45.1  -25 36   C3     BZ   2009-F18

                      (C) Copyright 2009 CBAT
2009 April 18                  (9039)            Daniel W. E. Green