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Name
  zet Ori  
AAVSO UID
000-BBJ-929 (1665 observations)  
Constellation
Orion Sequence
J2000.0
05 40 45.53 -01 56 33.3  (85.18971 -1.94258) Search nearby
B1950.0 05 38 14.07 -01 58 02.9
Proper motion
RA: 3.19 +/- 0.59 mas/yDec: 2.03 +/- 0.26 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 206.452 -16.585
Other names

(Internal only)
50 Ori 1RXS J054045.4-015631 AAVSO 0535-01A
ADS 4263 AB ASASSN-V J054045.53-015633.3 BD-02 1338
CSV 100670 GSC 04771-01188 HD 37742
HD 37743 HIP 26727 HR 1948
HR 1949 IRAS 05381-0158 IRC +00081
MWC 509 NSV 2553 SAO 132444
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Variability type
VAR
Spectral type O9.5Ibe+B0III
Mag. range
1.74 - 1.77 V
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 GCVS Team A: SB; AB: 2.0, 4.2, 2".43, 165deg, 1998; C: 10.0, 58", 10deg, BD-2 1339.
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References
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1 Perryman, M. A. C.; et al., 1997, The HIPPARCOS and TYCHO catalogues 1997HIP...C......0E
2 P.Mueller, IAU Circ 1138, 1949. --
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 = 2.25H = 2.35K = 2.40J - K = -0.16
AllWISE W3 = 1.78W4 = 1.42W3 - W4 = 0.36
Images
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Supporting Documents
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Stellar Association Membership
 Collinder 70 Open Cluster 2012A&A...548A..97Z
Revision History
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4 Otero, Sebastian Alberto 2020-11-03 23:59 UTC Primary name changed.
3 Otero, Sebastian Alberto 2018-01-19 22:46 UTC Range from HIPPARCOS and GCPD data.
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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