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Name
  NSV 2291  
AAVSO UID
--  
Constellation
Orion Sequence
J2000.0
05 35 15.77 -05 23 10.0  (83.81571 -5.38611) Search nearby
B1950.0 05 32 48.13 -05 25 02.5
Galactic coord. 209.006 -19.385
Other names

(Internal only)
tet Ori 1E 2MASS J05351577-0523100 ADS 4186 E
CSV 102480 ISOY J053515.76-052309.9 Parenago 1864
X 05328-05251 theta1 Ori E  
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Variability type
EA+TTS
Spectral type G2IV+G2IV
Mag. range
11.4 (0.1) V
Discoverer --
Epoch
07 Oct 2004 (HJD 2453285.98828) Ephemeris
Outburst --
Period 9.89520 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Eclipse amplitude is 0.1 mag. in the infrared but since both stars are similar, it should be the same in all passbands. Also intrinsic variability caused by spots or flares.
2 2012arXiv1206.6350M PMS eclipsing binary.
3 GCVS Team O.Struve. Var? [M.F.Walker, IBVS N1238, 1977.]. AE: 4", 351deg. A=V1016 Ori; B=BM Ori; C=NSV 02294; D=NSV 02295; F=NSV 02296; H=NSV 02293.
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References
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1 M. Morales-Calderon, J.R. Stauffer, K.G. Stassun et al., 2012,
arXiv:1206.6350v1 [astro-ph.GA]		 2012arXiv1206.6350M
2 P.P.Parenago, Trudy GAISh 25, 1954. --
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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 H = 6.15K = 5.99
Images
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Supporting Documents
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Stellar Association Membership
 NGC 1976 Open Cluster 2012A&A...548A..97Z
Revision History
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4 Otero, Sebastian Alberto 2012-07-03 00:31 UTC Type, spectral type, epoch and amplitude from 2012arXiv1206.6350M. 2MASS position.
3 Admin, VSX 2012-07-01 02:26 UTC Update from [2012arXiv1206.6350M].
2 Admin, VSX 2010-01-18 23:18 UTC Position updated to NSV version of June 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.

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