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Name
  NSV 9189  
AAVSO UID
000-BJX-508 (No observations)  
Constellation
Ophiuchus Sequence
J2000.0
17 34 56.07 +12 33 36.1  (263.73363 +12.56003) Search nearby
B1950.0 17 32 36.78 +12 35 41.6
Proper motion
RA: 108.07 mas/yDec: -221.57 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 35.894 +22.568
Other names

(Internal only)
55 Oph alf Oph 1RXS J173456.3+123344
Alp Oph BD+12 3252 GJ 681.0
HD 159561 HIP 86032 HR 6556
IRC +10331 SAO 102932 alpha Oph
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Variability type
DSCT+GDOR
Spectral type A5IV
Mag. range
2.08 V (0.006)CR
Discoverer --
Epoch
--
Outburst --
Period 0.05357 d  (77.14 min)
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto DSCT main period given. Multiperiodic. Also rotationally-modulated g-modes (GDOR) with main periods of 0.5850 and 0.5739 d. Early K-type companion in a 7.9 year orbit.
2 GCVS Team Unresolved astrometric binary. Component B is SB.
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References
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1 Rotationally-modulated g-modes in the rapidly-rotating delta Scuti star
Rasalhague (alpha Ophiuchi)
2010ApJ...725.1192M
2 H.E.Lau, AN 196, 425-430, 1914. 1914AN....196R.425L
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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 = 1.83H = 1.72K = 1.68J - K = 0.15
Images
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Supporting Documents
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Revision History
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2 Otero, Sebastian Alberto 2010-12-10 23:46 UTC New elements and classification from reference. Hipparcos position. GCPD maximum V-magnitude.
Amplitude is in MOST wide band (350-750 nm).
1 Admin, VSX 2005-12-17 20:33 UTC Preserved original object data.