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[vsnet-campaign-news 125] Possible nova in Oph (HadV105)
Katsumi Haseda (Aichi, Japan) reports the discovery of a possible nova
in Oph (HadV105).
Haseda provides the following semi-accurate coordinates (possible
uncertainty 10"):
17h 37m 34.5s, -16o 23' 22" (J2000.0)
There is no known or suspected variable, no bright (brighter than 14.5)
DSS star and no bright 2MASS source at the reported position. No known
(bright) minor planet is found at this position.
The object is thus very likely a nova or a some sort of exploding object.
Confirmatory observations, accurate astrometry, photometry and spectroscopy
are most urgently requested.
Finding charts are placed at:
http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/Novae/hadv105/
We will be soon going to prepare a VSNET web page on this object.
Please keep watching the VSNET top page.
(http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/)
Photographic magnitude estimates by VSOLJ members
object YYYYMMDD(UT) mag code
HadV105 19970823.500 <131p Had.VSOLJ
HadV105 19980330.774 <131p Had.VSOLJ
HadV105 19990115.852 <131p Had.VSOLJ
HadV105 19990216.830 <131p Had.VSOLJ
HadV105 19990323.776 <131p Had.VSOLJ
HadV105 19990803.539 <125p Had.VSOLJ
HadV105 19990830.471 <131p Had.VSOLJ
HadV105 20000206.829 <131p Had.VSOLJ
HadV105 20000429.724 <131p Had.VSOLJ
HadV105 20000604.599 <125p Had.VSOLJ
HadV105 20000708.590 <125p Had.VSOLJ
HadV105 20000802.508 <131p Had.VSOLJ
HadV105 20000822.495 <131p Had.VSOLJ
HadV105 20000824.477 <125p Had.VSOLJ
HadV105 20010202.856 <131p Had.VSOLJ
HadV105 20010226.807 <131p Had.VSOLJ
HadV105 20010304.806 <131p Had.VSOLJ
HadV105 20010319.782 <131p Had.VSOLJ
HadV105 20010326.782 <131p Had.VSOLJ
HadV105 20010331.790 <131p Had.VSOLJ
HadV105 20010422.759 <131p Had.VSOLJ
HadV105 20010512.581 <131p Had.VSOLJ
HadV105 20010517.639 <131p Had.VSOLJ
HadV105 20010528.620 <131p Had.VSOLJ
HadV105 20010615.672 <131p Had.VSOLJ
HadV105 20010626.619 <125p Had.VSOLJ
HadV105 20010713.572 <131p Had.VSOLJ
HadV105 20010724.556 <125p Had.VSOLJ
HadV105 20010911.509 <131p Had.VSOLJ
HadV105 20010916.492 <125p Had.VSOLJ
HadV105 20011011.426 <131p Had.VSOLJ
HadV105 20020124.838 90p Had.VSOLJ
Observer's code:
Had: K. Haseda (Aichi, Japan)
Instruments: 10cm F4.0 twin patrol camera +T-Max400(120)
Regards,
Taichi Kato
On behalf of the VSNET Collaboration team
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VSNET (Variable Star Network) is an international variable star observing
network, covering various areas of novae, supernovae, cataclysmic variables
(CVs), X-ray transients, and other classical eruptive, pulsating, and
eclipsing variables. VSNET is one of invited contributing organizations
to the SkyPub AstroAlert system.
VSNET Home Page: http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/
CCD observations of such targets are a relatively easy task for a 20-40cm
telescope; simply take as many CCD frames (with exposure times 10-30 sec)
as possible, spanning several hours per night. The only requirements are
the weather and your patience! If you need more help on the observing
technique, please feel free to ask on the vsnet-campaign list.
We would sincerely appreciate volunteers who would join the VSNET
Collaboration team to study the wonders of these exotic variable stars.
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with a line "SUBSCRIBE vsnet-campaign." or your comment to join the
collaboration team.
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