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000-BFM-104 (4 observations)  
Serpens Sequence
18 18 05.90 -12 14 33.3  (274.52458 -12.24258) Search nearby
B1950.0 18 15 17.71 -12 15 46.2
Proper motion
RA: -1.75 +/- 1.04 mas/yDec: -1.10 +/- 0.65 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 18.251 +1.684
Other names

(Internal only)
1RXS J181806.3-121439 ASAS J181806-1214.6 BD-12 4980
HD 167971 HIP 89681 SAO 161292
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Variability type
Spectral type O6-7V+O6-7V
Mag. range
7.33 - 7.66 V
Discoverer --
13 Aug 2002 (HJD 2452500.4725) Ephemeris
Outburst --
Period 3.3216039 d
Rise/eclipse dur. --
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 2012arXiv1204.3537D Close O8I companion at a distance of 8-15 mas to the eclipsing pair of O6-7V stars.
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Click reference title/citation to view in new window. Roll over index number to view submission details.
1 Bob Nelson's O-C files, 2016 --
2 M. De Becker, H. Sana, O. Absil, J.-B. Le Bouquin, R. Blomme, 2012,
arXiv:1204.3537v1 [astro-ph.SR]
3 M. Kiraga, 2012, Acta Astronomica 62, 67 2012AcA....62...67K
4 J.M. Kreiner, 2004, Acta Astronomica 54, 207 2004AcA....54..207K
5 A.M.van Genderen, IBVS N2760,1985. 1985IBVS.2760....1V
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
2MASS J = 5.52H = 5.32K = 5.14J - K = 0.38
AllWISE W1 = 5.06W2 = 4.87W3 = 4.87W1 - W2 = 0.18
Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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Stellar Association Membership
 NGC 6604 Open Cluster 2012A&A...548A..97Z
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Admin, VSX 2012-04-17 22:08 UTC Update from [2012arXiv1204.3537D].
3 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
2 Admin, VSX 2009-03-11 21:48 UTC Update from [2004AcA....54..207K].
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.