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SN_2008fe

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2008-09-31:   Possible Discovery new supernova in UGC 09578 (PGC 053239)

Observation of a possible supernovae in UGC 09578.

Discovery by S. Korotkiy (Ka-Dar obs., Moscow), T. Kryachko and B.Satovskiy
(Astrotel obs., KSU) :

message on comet-ml :

Dear Sirs!

Yesterday, we discovery possible supernova (mag approximately 19.2)
near by C/2005 L3 (McNaught)! 19' S-E from comet!

Please, confirmed possible supernova!

Discovery new supernova in UGC 09578 (PGC 053239)
------------

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S. Korotkiy (Ka-Dar obs., Moscow), T. Kryachko and B.Satovskiy
(Astrotel obs., KSU) report the discovery of an apparent supernova
(mag approximately 19.2) on the five a unfiltered images with
exposition 300 sec (lim mag 21.0) taken on Aug. 30.72 UT with the
Takahashi FRC-300 (D=300mm, F=2330mm) + CCD Apogee Alta U9000 at
Kazan State University Astrotel observatory (Karachay-Cherkessia,
Russia, MPCCOD: 114). The new object is located at R.A. = 14h 53m
48s.26 +/- 0".1, Decl. = +20d 06' 45".5 +/- 0".1 (equinox 2000.0),
which is about 23".1 east and 12".1 south of the center of the galaxy
UGC 09578 (PGC 053239). Nothing is visible at this position on a
Palomar Sky Survey (POSS-II Blue) obtained 1993-05-19 06:28:00 (via
the Digitized Sky Survey; limiting mag 21.5). In MPChecker no
asteroids.

Discovery image:
<http://www.astroalert.su/files/discovery-sn-summ5x300sec.jpg>

DSS plate (obtained 1993-05-19 06:28:00):
<http://www.astroalert.su/files/dss-19930519-062800.jpg>


On an image tacking on 2008-08-27.876 centered on C/2005L3 comet we can see galaxy UGC 9578 an this possible Supernovae.

Nothing found at this place using  DSS and  query Simbad

Report :
COD A77
CON FRANCOIS KUGEL [fkugel@wanadoo.fr]
OBS C. Rinner ; F.Kugel
MEA F. Kugel
TEL 0.5-m f/3 reflector + CCD
ACK MPCReport file updated 2008.08.31 13:58:00
AC2 fkugel@wanadoo.fr
NET USNO-SA2.0
Possible SN C2008 08 27.8762714 53 48.23 +20 06 46.9 18.4 R A77
----- end -----





Image full field



circular CBET 1485

SUPERNOVA 2008fe IN UGC 9578
Stanislav Korotkiy, Moscow; and T. Kryachko and B. Satovskiy, Kazan
State University (KSU), report the discovery of an apparent supernova (mag
approximately 19.2) on the five unfiltered 300-s images (limiting mag
21.0) taken on Aug. 30.72 UT with a Takahashi FRC-300 30-cm f/7.8
telescope (+ Apogee Alta U9000 CCD camera) at KSU's Astrotel Observatory
(Karachay-Cherkessi

a, Russia). The new object is located at R.A. =
14h53m48s.26 +/- 0".1, Decl. = +20o06'45".5 +/- 0".1 (equinox 2000.0),
which is about 23".1 east and 12".1 south of the center of the galaxy
UGC 9578 (PGC 53239). Nothing is visible at this position on a Palomar
Sky Survey image obtained on 1993 May 19 (via the Digitized Sky Survey;
limiting blue mag 21.5). After learning of Korotkiy's report, F. Kugel
(Dauban, Banon, France) writes that C. Rinner and he obtained an unfiltered
image (six stacked 120-s exposures) of comet C/2005 L3 on Aug. 27.87 with a
50-cm f/3 telescope that shows a new (apparently stellar) object of mag
18.4 located at R.A. = 14h53m48s.23, Decl. = +20o06'46".9 (equinox 2000.0),
or about 25" east and 10" south of the center of the galaxy UGC 9578,
again confirming the absence of such an object on the Palomar Sky Survey
to a limiting blue magnitude of 21.5.
The discovery image by Korotkiy et al. is posted at the following
URL: http://www.astroalert.su/files/discovery-sn-summ5x300sec.jpg with
the 1993 DSS image at http://www.astroalert.su/files/dss-19930519-062800.jpg


2008-09-01 : 2nd observation

Electronic Telegram No. 1503

SUPERNOVAE 2008fe, 2008fg, 2008fh, 2008fi, AND 2008fk
J. M. Silverman, M. Modjaz, M. R. George, and A. V. Filippenko,
University of California, Berkeley, report that inspection of CCD spectra
(range 330-1050 nm), obtained on Sept. 7 and 8 UT with the 3-m Shane
reflector (+ Kast) at Lick Observatory, shows that 2008fe (CBET 1485) is a
type-IIP supernova, about one month after explosion. After removing the
host-galaxy recession velocity (9280 km/s; de Vaucouleurs et al. 1991,
Third Reference Catalogue of Bright Galaxies), the minimum of the H-alpha
absorption is found to be blueshifted by about 5700 km/s.