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Latest Details
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Name
  alf Ara  
AAVSO UID
000-BCT-809 (48 observations)  
Constellation
Ara Sequence
J2000.0
17 31 50.49 -49 52 34.1  (262.96037 -49.87614) Search nearby
B1950.0 17 27 58.39 -49 50 19.5
Proper motion
RA: -33.27 +/- 0.84 mas/yDec: -67.22 +/- 0.31 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 340.755 -8.827
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 1724-49 CD-49 11511 CPD-49 10052
HD 158427 HIP 85792 HR 6510
Hen 3-1417 MWC 261 NSV 8999
SAO 228069    
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Variability type
LERI+GCAS
Spectral type B2Vne
Mag. range
2.73 - 3.00 V
Discoverer --
Epoch
--
Outburst --
Period 0.98127 d  (23.550 h)
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Period 0.49 d. (single-wave) also possible. The double-waved soultion was preferred in 1989A&AS...81..151C.
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References
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1 The HIPPARCOS Catalogue 1997A&A...323L..57H
2 J.Cuypers, L.A.Balona, F.Marang, AsAp Suppl 81, No.2, 151, 1989. 1989A&AS...81..151C
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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 = 2.70H = 2.58K = 2.49J - K = 0.21
AllWISE W3 = 1.09W4 = 0.42W3 - W4 = 0.67
Images
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Supporting Documents
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1 Light curves Otero, Sebastian Alberto 2011-11-01 20:39 UTC Hipparcos and Cuypers et al. data showing the LERI modulation and historical photometric light curve from the literature showing the long term GCAS variability.
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Revision History
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3 Otero, Sebastian Alberto 2011-11-01 20:39 UTC Type, period and range from Hipparcos, Cuypers et al. and visual data.
2 Admin, VSX 2010-01-05 04:43 UTC Update from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.

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