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THE ASTRONOMER Electronic Circular No 2168      2005 Nov 10 16.37UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK      Backup: gmh@wdcc1.bnsc.rl.ac.uk
WORLD WIDE WEB                         http://www.theastronomer.org
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PROBABLE NEW MOONS OF PLUTO: S/2005 P 1 AND S/2005 P 2
H. A. Weaver, Johns Hopkins University et. al., report on IAUC 8624 the 
discovery of two new satellites of Pluto.  The objects, provisionally 
designated S/2005 P 1 and S/2005 P 2, were clearly detected in two 
different Hubble Space Telescope images on 2005 May 15.05 and 18.14 UT 
at about magnitude 23.
On May 15, S/2005 P 1 was 1.85 arcsec from the centre of Pluto in PA 
264.2 deg and S/2005 P 2 was 2.09 arcsec from Pluto in PA 326.9 deg. On 
May 18, the locations were 2.36 arcsec in PA 305.8 deg and 2.22 arcsec 
in PA 355.5 deg.
Positions are consistent with nearby circular orbits in the orbital 
plane of Charon and, on this assumption, preliminary orbital solutions 
yield approximate values of:
a =  64700 km and P = 38.2 days for S/2005 P 1
a =  49400 km and P = 25.5 days for S/2005 P 2
For additional information, see:
http://www.boulder.swri.edu/plutonews.

SUPERNOVA 2005hc IN MCG +00-6-3
Discovery by Sloan Digital Sky Survey of a possible supernova (IAUC 
8621):
SN      2005 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2005hc  Oct. 12     01 56 47.94  -00 12 49.2  18.5    8.4"W,  3.9"S

SUPERNOVA 2005hd IN ANONYMOUS GALAXY
Discovery by Nearby Supernova Factory collaboration of a possible 
supernova (IAUC 8621):
SN      2005 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2005hd  Oct. 21.5   04 16 12.37  -13 13 11.6  17.8     --

SUPERNOVA 2005he IN MCG +06-49-68
Discovery by LOSS of a possible supernova (IAUC 8621):
SN      2005 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2005he  Oct. 24.23  22 39 45.44  +34 22 43.0  18.6    1.3"W,  5.5"S

SUPERNOVA 2005hf IN ANONYMOUS GALAXY
Discovery by R. Quimby et. al., Imperial College of a possible supernova 
(IAUC 8622):
SN      2005 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2005hf  Oct. 25.12  01 27 05.97  +19 07 00.5  16.7    1.9"W,  1.5"N
A spectrogram shows it to be of type-Ia near maximum light.

SUPERNOVA 2005hg IN UGC 1394
Discovery by LOSS of a possible supernova (IAUC 8623):
SN      2005 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2005hg  Oct. 25.27  01 55 41.87  +46 47 47.4  18.6    3.7"W, 19.6"S

Guy M Hurst