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Name
  BM Ori  
AAVSO UID
000-BDY-996 (3138 observations)  
Constellation
Orion Sequence
J2000.0
05 35 16.15 -05 23 06.5  (83.81729 -5.38514) Search nearby
B1950.0 05 32 48.70 -05 24 59.8
Proper motion
RA: -0.9 +/- 2.5 mas/yDec: 0.1 +/- 2.5 mas/ySource: UCAC4
Galactic coord. 209.006 -19.383
Other names

(Internal only)
41 Ori B tet Ori 1B ADS 4186 B
BD-05 1315 B HD 37021 HR 1894
Parenago 1863 SAO 132314 B tet01 Ori B
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Variability type
EA
Spectral type B2V+A7IV
Mag. range
7.9 - 8.65 V
Discoverer Hermann Goos (1918)
Epoch
18 Dec 2010 (HJD 2455548.738) Ephemeris
Outburst --
Period 6.4705315 d
Rise/eclipse dur. 10%  (15.529 h)
Remarks
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1 GCVS Team In the region of the Orion nebula T-association. In the cluster NGC 1976. Orion Trapezium member: teta**1 Ori B (A = V1016 Ori; B 8.7", 32deg; C 5.13m, 13.1", 131deg; D 6.70m, 21.6", 96deg). d = 0.05P; Min II 7.98. Shape of the light curve and depths of minima vary.
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References
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1 Bob Nelson's O-C files, 2016 --
2 D. Windemuth, W. Herbst, E. Tingle et al., 2013, arXiv:1303.5091
[astro-ph.SR]
2013arXiv1303.5091W
3 D.S.Hall, L.M.Garrison, Jr., PASP 81, 771, 1969. 1969PASP...81..771H
4 P.P.Parenago, Tr. Gos. Astron. Inst. Sternberg 25, 1954. --
5 Hartwig, E.; Muller, G., 1921, Benennung von neu entdeckten veraenderlichen
Sternen
1921AN....212..353.
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 H = 6.30K = 6.00
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 Fernig, Leo 2023-03-29 20:22 UTC Discoverer updated from 1921AN....212..353. page 364.
3 Admin, VSX 2013-03-26 00:40 UTC Update from [2013arXiv1303.5091W].
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.