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THE ASTRONOMER Electronic Circular No 2101      2005 Apr 08 18.45UT
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             GMH at AST.STAR.RL.AC.UK
WORLD WIDE WEB                         http://www.theastronomer.org
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V5115 SAGITTARII (= NOVA SAGITTARII 2005, = POSSIBLE NOVA IN SGR)
Further to the note on TA E-Circular 2100, N. N. Samus, Institute of 
Astronomy, Russian Academy of Sciences, advises that the designation 
V5115 Sgr has been given to this nova.

The following visual magnitude estimates have appeared on IAUC 8501:
2005 Mar. 30.127 UT, 7.7 (K. Hornoch, Czech Republic); 30.20, 8.0 
(Alfredo Pereira, Portugal); 30.273, 7.7 (R. Y. Shida, Brazil).

K. Kadota, Japan, (0.25-m f/5.0 reflector) has obtained a precise 
position from an unfiltered CCD image of Mar. 29.737 UT, when the nova 
was at mag 8.2:
RA 18h 16m 58.96s, DEC -25 56' 38.9" (2000).

L. Kiss, University of Sydney; and A. Derekas, University of New
South Wales, write on IAUC 8501 that an optical spectrum (0.05 nm/pixel; 
range 580-675 nm), taken with the Australian National University 2.3-m 
telescope at Siding Spring Observatory on
Mar. 29.81 UT, shows the object is indeed a nova.  The prominent H_alpha 
emission line shows a strong P-Cyg profile, with the main absorption 
component at -1300 km/s.

SATELLITES OF JUPITER
According to IAUC 8502 the IAU WGPSN has approved the following new
designations and names of satellites of Jupiter:

     Jupiter XXXIX   Hegemone    = S/2003 J 8
     Jupiter XL      Mneme       = S/2003 J 21
     Jupiter XLI     Aoede       = S/2003 J 7
     Jupiter XLII    Thelxinoe   = S/2003 J 22
     Jupiter XLIII   Arche       = S/2002 J 1
     Jupiter XLIV    Kallichore  = S/2003 J 11
     Jupiter XLV     Helike      = S/2003 J 6
     Jupiter XLVI    Carpo       = S/2003 J 20
     Jupiter XLVII   Eukelade    = S/2003 J 1
     Jupiter XLVIII  Cyllene     = S/2003 J 13

Guy M Hurst