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IAUC 8648: Sats OF URANUS; 2005mf, 2005mg; C/2005 U7, C/2005 U8, C/2005 Y1

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                                                  Circular No. 8648
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


SATELLITES OF URANUS
     Further to IAUC 8177, the IAU Working Group for Planetary
System Nomenclature has approved the following new designations and
names of satellites of Uranus:

    Uranus XXII     Francisco   = S/2001 U 3
    Uranus XXIII    Margaret    = S/2003 U 3
    Uranus XXIV     Ferdinand   = S/2001 U 2
    Uranus XXV      Perdita     = S/1986 U 10
    Uranus XXVI     Mab         = S/2003 U 1
    Uranus XXVII    Cupid       = S/2003 U 2


SUPERNOVAE 2005mf AND 2005mg
     Two additional supernovae have been discovered on unfiltered
CCD images:  2005mf by the THCA Supernova Survey (cf. IAUC 8647)
and 2005mg by J. Newton and T. Puckett (cf. IAUC 8647).  Additional
magnitudes for 2005mf in UGC 4798:  Nov. 25, [18.5; Dec. 26.58 UT,
17.3.  SN 2005mf is not visible on TNT images from Oct. 31, Nov. 13,
and Dec. 13.  Additional magnitudes by Puckett for 2005mg in UGC
155:  Dec. 1, [19.5; 27.99, 15.2.

SN      2005 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2005mf  Dec. 25.67   9 08 42.33  +44 48 51.4  17.4  5".9 W, 13".3 N
2005mg  Dec. 27.08   0 16 44.21  + 7 04 19.8  16.2  0".3 E, 14".7 S


COMETS C/2005 U7, C/2005 U8, C/2005 Y1 (SOHO)
     Additional near-sun comets have been found on SOHO website
images (cf. IAUC 8644).  C/2005 U7 and C/2005 U8 were very faint
and diffuse Kreutz sungrazers.  Non-group comet C/2005 Y1 was
around 8th mag (and very hard to spot) in C3 images, but it was
well visible with a circular, diffuse head in C2 images, where it
reached mag about 7.1 with a very faint tail about 5' long at about
5 solar radii on Dec. 17.125 UT; C/2005 Y1 was again approaching
mag about 8 when it left the C2 field-of-view.

 Comet        2005 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/2005 U7    Oct. 24.496  13 49.5   -12 51   C2     QY   2005-Y02
 C/2005 U8         30.038  14 12.1   -14 58   C2     HS   2005-Y02
 C/2005 Y1    Dec. 16.975  17 35.2   -23 29   C2/3   SF   2005-Y07

                      (C) Copyright 2005 CBAT
2005 December 29               (8648)            Daniel W. E. Green

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