[vsnet-campaign-news 174] Bright (5-6 mag) likely nova in Sgr

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

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            Bright (5-6 mag) likely nova in Sagittarius
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  Katsumi Haseda (Aichi Japan) has discovered a bright new object (most likely
a nova) in Sagittarius.  The details are as follows:

[All messages are from vsnet-discovery-nova messages.]

Unconfirmed bright object(?) in Sgr, please confirm!

    Katsumi Haseda (Aichi Japan) has reported possible detection of
a potentially bright object (mag about 5.0) at an approximate position
190108.5 -220045 (J2000.0).  Since the stellar image was recorded
on a single film taken on 2002 Sep. 20.431 UT, the existence or reality of
the object has not been confirmed.  Although we don't usually report
a potential discovery alert at such an early stage, I relay this report
because the exceptional brightness clearly requires emergent confirmation.

    Could someone check this field?

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New object confirmed at position 19 01 09.34 -22 00 05.5 at 09/21/2002 1:35 
UT.  Position based on plate solution with 20 GSC 1.1 stars.  V magnitude 
greater than 6.3 based on magnitudes in TheSky software.  My 20 second 
exposure was in saturation.  I compared two V band images to DSS1.V.SERC V 
band epoch 1987.59 image.  The new object is stellar in appearance and is not 
present on the DSS1 image.  I will continue with photometry and 
spectrophotometry and report observations when they are reduced.

Regards,
Doug West

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I confirmed visually, mag. 6.1 on Sep 21.145 at position 19 01 09 (+/-
1s) -22 00 05 (+/- 5")
using  80 mm refractor f/5 with setting circles. Comp stars SAO 185584 &
187519 & 187422.
Regards
Jaime Garcia (GAJ)
Argentina

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Additional photometry of the object at 19 01 09.38 -22 00 05.9 error +/- 
0.75".  This position was measured from a 5 second exposure image.  The plate 
solution used 20 GSC 1.1 stars.  B=6.44 +/-0.6, V<6.0 (the 5 second exposure 
was in saturation).  Comparison stars:  SAO 187580 B=10.34 V=9.21 and SAO 
187591 B=8.98 V=8.75.   The images were taken under clear skies with a full 
moon.  I will reduce the low-resolution spectroscopy in the morning and post 
it on my web page.

Regards,
Doug West
Mulvane, KS USA
http://hometown.aol.com/dwest61506/index.html

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Regards,
Taichi Kato
VSNET Collaboration team

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