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Latest Details
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Name
  R Oph  
AAVSO UID
000-BBY-517 (11439 observations)  
Constellation
Ophiuchus Sequence
J2000.0
17 07 45.82 -16 05 34.2  (256.94092 -16.09283) Search nearby
B1950.0 17 04 53.47 -16 01 40.4
Proper motion
RA: -25.9 +/- 1.4 mas/yDec: -24.8 +/- 1.6 mas/ySource: UCAC4
Galactic coord. 6.044 +14.322
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 1702-15 ASAS J170746-1605.5 BD-15 4455
HD 154721 IRC -20347 RAFGL 1923
SAO 160299    
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Variability type
M
Spectral type M4e-M6e
Mag. range
7 - 13.8 V
Discoverer --
Epoch
21 Sep 1982 (HJD 2445234) Ephemeris
Outburst --
Period 306.5 d
Rise/eclipse dur. 45%
Remarks
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1 GCVS Team P var. Max = 2399214 + 302.1d*E (JD2399200 - 2427900) [R.Prager, GuL 2, 1936.]; Max = 2427915 + 304.0d*E (JD2427900 - 34900); Max = 2434906 + 301.5d*E (JD2434900 - 40600) [General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N. Kholopov et al.]; since JD2440600 - see Table.
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References
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1 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
2 T. Karlsson, Maxima of Mira stars --
3 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
--
External Links
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Location    Go   
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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 = 2.52H = 1.61K = 1.15J - K = 1.37
AllWISE W3 = -0.47W4 = -1.13W3 - W4 = 0.66
APASS-DR9 B = 13.20V = 11.87g' = 12.17r' = 10.22B - V = 1.33
Images
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Supporting Documents
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Campaigns/Programs
 LPV Program
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
2 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.