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Name
  ER Ori  
AAVSO UID
000-BBJ-007 (22356 observations)  
Constellation
Orion Sequence
J2000.0
05 11 14.50 -08 33 24.7  (77.81042 -8.55686) Search nearby
B1950.0 05 08 50.59 -08 37 00.0
Proper motion
RA: 10.708 +/- 0.119 mas/yDec: -28.493 +/- 0.095 mas/ySource: Gaia DR1
Galactic coord. 209.196 -26.134
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
1RXS J051114.9-083318 AAVSO 0506-08 AN 45.1929
ASAS J051114-0833.4 BD-08 1050 HIP 24156
SAO 131854    
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Variability type
EW/KW
Spectral type F8V
Mag. range
9.28 - 10.01 V
Discoverer --
Epoch
08 Nov 2012 (HJD 2456239.70372) Ephemeris
Outburst --
Period 0.42340615 d  (10.161748 h)
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Third body with a very eccentric orbit and a period of ~54 years. (BAA-VSS Circular #177)
2 GCVS Team VB A (B 13.6", 0deg). Min II 9.97. P var. Min I = 2426336.6485 + 0.4233955d*E (JD2426330 - 33920) [V.P.Zessewitsch, Odessa Izv. 4, Issue 2, 1954.]; Min I = 2434765.6306 + 0.42340620d*E (JD2433920 - 35475) [K.K.Kwee, BAN 14, 131, 1958.]; Min I = 2436508.7851 + 0.4234009d*E (JD2435475 - 40000) [L.Binnendijk, AJ 67, 86, 1962.]; since JD2440000 - see Table. Shape of the light curve varies.
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References
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1 C. Lloyd, 2018, Autumn Eclipsing Binaries BAA-VSS Circular #177, 2018
2 Bob Nelson's O-C files, 2016 --
3 S. Deb, H.P. Singh, 2010, arXiv:1011.2574v1 [astro-ph.SR] 2010arXiv1011.2574D
4 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
5 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1944PASP...56...34S
6 Ph.H.Taylor, Penn Publ 6, part 1, 1940. --
7 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
--
External Links
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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 = 8.29H = 8.03K = 7.97J - K = 0.32
AllWISE W1 = 8.03W2 = 8.03W3 = 8.07W4 = 8.12W1 - W2 = -0.00W3 - W4 = -0.04
APASS-DR9 B = 10.18V = 9.53g' = 10.13r' = 9.40i' = 9.31B - V = 0.65
Images
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Supporting Documents
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Revision History
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4 Otero, Sebastian Alberto 2019-03-01 07:01 UTC Elements from BAA-VSS Circular #177.
3 Admin, VSX 2010-11-12 23:26 UTC Update from [2010arXiv1011.2547D].
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.