Brh V18
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Letzte Aktualisierung:  10. August 2014


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SIMBAD Astronomical Database
Informationen über Brh V18

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Nachricht von Dr. Klaus Bernhard 15. Oktober 1999
GSC 490_584  =   Brh V18 new variable
Dear colleagues!
I would like to send you observations of a new variable star (Brh V18),
which I have discovered in a systematic CCD-based search for new variable.
In each observing run typically 400 images are taken of several survey fields.
The frames are processed automatically.

CCD-camera:Starlight Xpress SX (unfiltered)
Telescope: Celestron-8 (20 cm Schmidt-Cassegrain)

New variable star:
new Brh V18 19 3711.7 N062810 (J2000) 12.8 13.1 (CCD)

Brh V18: GSC 490 584
Comparison star was for all measurements GSC 490 3216 (12.8 mag),
which was checked to be constant.

Data analysis of BeV17 [GSC 477 3880; vsnet-obs 23759] and BeV18
was made by Chris Lloyd, UK:
Brh V18 shows only a few likely periods, and to my mind the
best of these is 0.5786 days although 0.783 days is also a good
possibility. It could be an RR Lyrae star. BeV18 is less clear but shows 
several possible periods under one day

object YYMMDD(UT) mag (CCD) code
BeV18 990718.0264 12.95 BRH.BAV
BeV18 990719.0264 13.13 BRH.BAV
BeV18 990720.0208 12.89 BRH.BAV
BeV18 990727.0174 13.12 BRH.BAV
BeV18 990801.0028 12.84 BRH.BAV
BeV18 990803.0069 13.00 BRH.BAV
BeV18 990806.9931 13.02 BRH.BAV

Klaus Bernhard