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Latest Details
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Name
  V0923 Aql  
AAVSO UID
000-BCG-946 (1032 observations)  
Constellation
Aquila Sequence
J2000.0
19 30 33.12 +03 26 39.9  (292.63800 +3.44442) Search nearby
B1950.0 19 28 03.01 +03 20 19.1
Proper motion
RA: 14.42 +/- 0.39 mas/yDec: 2.20 +/- 0.28 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 40.505 -7.093
Other names

(Internal only)
AAVSO 1925+03 BD+03 4043 HD 183656
HIP 95929 HR 7415 MWC 988
SAO 124704    
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Variability type
GCAS
Spectral type B5.5IIIpe-B8V
Mag. range
5.96 - 6.18 V
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Binary system with P= 214.7 d. (2021A&A...647A..97W)
2 GCVS Team Unusual shell star [P.W.Merrill, C.G.Burwell, ApJ 110, 387, 1949.]. Similar to EW Lac. He lines are widened by the rotation, NaI lines are narrow. Light changes are periodic: Min = 2436458.66 + 0.8518d*E. The cause of variations is probably connected with the rotation and the inhomogeneous brightness distribution over the disk of the star [C.R.Lynds, ApJ 131, 390, 1960.]. Profiles of spectral lines vary. The expansion of the envelope terminated in 1965, which apparently led to the development of inhomogeneities and to the broadening of hydrogen line profiles [N.F.Vojkhanskaya, IAU Symp N70, 327, 1976.].
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 Samus, N. N.; Kazarovets, E. V.; Durlevich, O. V.; et al., 2017, General
Catalogue of Variable Stars: Version GCVS 5.1 (November 2019)
2017ARep...61...80S
2 C. Koen, L. Eyer, 2002, MNRAS 331, 45 2002MNRAS.331...45K
3 C.R.Lynds, ApJ 131, 390, 1960. 1960ApJ...131..390L
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 = 5.96H = 5.90K = 5.81J - K = 0.15
AllWISE W1 = 5.76W2 = 5.48W3 = 5.10W4 = 4.30W1 - W2 = 0.29W3 - W4 = 0.80
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 19 30 33.12 +03 26 39.9 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Otero, Sebastian Alberto 2022-01-14 19:29 UTC Maximum magnitude and orbital period from 2021A&A...647A..97W.
3 Otero, Sebastian Alberto 2020-05-24 18:21 UTC Range from the GCVS (November 2019 version).
2 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.