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THE ASTRONOMER Electronic Circular No 2306      2007 Feb 08 14.19UT
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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V1280 SCORPII = NOVA SCORPII 2007
H. Yamaoka, Kyushu University, reports the discovery of a new object of 
magnitude 9.9 by Yuji Nakamura, Japan on unfiltered CCD images taken on 
2007 Feb.4.86UT with a 135-mm camera lens. The position has been 
measured as:

RA 16h 57m 41s.0 DEC-32 20' 34" (2000).

There was no object in this position, to a limit of magnitude 11.0 on 
earlier images of Jan 29.87UT and Feb 2.86UT.

According to CBET 834, Yukio Sakurai, Japan, also made an independent 
discovery on CCD exposures of Feb 4.89UT. Nakano has measured the 
position from Sakurai's images giving end figures RA 41.24s DEC 36.5".

Tom Krajci, New Mexico has confirm the presence of new object. 
Astrometry with UCAC2 data (15 reference stars) gives the following: 
(11-inch SCT, f.l.=2850mm), 2007 Feb 6 (13h10m17sUT):

RA 16h 57m 41.209s -32 20' 35.29" mag 08.34

Seicchiro Kiyota, Japan reports the following measures from images with 
a 0.20-m Schmidt-Cassegrain telescope + Alta E47 + Bessell filters:
20070206.803 8.39V; 20070206.804 7.94Ic; 20070206.804 8.30Rc; 
20070206.809 8.44y; 20070206.822 8.86B

H. Naito and S. Narusawa, Nishi-Harima Astronomical Observatory
(NHAO), report on IAUC 8803 that they obtained a low-dispersion spectrum 
(range 410-670 nm; resolution 1600 at H_alpha) of the object on Feb. 
5.87 UT with the 2.0-m NAYUTA telescope suggesting that the variable is 
indeed a classical nova caught near maximum light.

N. N. Samus, Institute of Astronomy, Russian Academy of Sciences, 
advises that the nova reported above has been given the designation 
V1280 Sco.

NSV 4838
This UGSU star, located in Ursa Major, is in outburst according to a 
report by Jeremy Shears, Cheshire, England: Feb 6.916 15.2C
Gary Poyner, Birmingham, confirmed the outburst on Feb 07.010 at 
magnitude 14.9 visual.

Hiroyuki Maehara, VSNET Collaboration Team, reports that he performed 
time-series observation of NSV4838 on Feb 7. The data show superhumps 
with an amplitude of 0.3 mag suggesting that NSV4838 is a new SU 
UMa-type dwarf nova.

Guy M Hurst