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Latest Details
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Name
  lam Ori  
AAVSO UID
000-BBJ-628 (140 observations)  
Constellation
Orion Sequence
J2000.0
05 35 08.28 +09 56 03.0  (83.78450 +9.93417) Search nearby
B1950.0 05 32 22.95 +09 54 08.6
Proper motion
RA: -0.34 +/- 0.60 mas/yDec: -2.94 +/- 0.33 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 195.052 -11.995
Other names

(Internal only)
39 Ori 1RXS J053508.6+095607 2RXS J053508.4+095607
AAVSO 0529+09 ADS 4179 AB BD+09 879
CSV 100542 GSC 00705-02399 GSC 00705-02400
HD 36861 HD 36862 HIP 26207
HR 1879 HR 1880 Heka
Meissa NSV 2240 PPM 149166
SAO 112921 TIC 436103278 WDS J05351+0956AB
Zinn 0397    
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Variability type
BCEP:
Spectral type O8III((f))+B0.5V
Mag. range
3.39 - 3.40 V
Discoverer --
Epoch
30 Dec 2018 (HJD 2458483.209) Ephemeris
Outburst --
Period 0.4299 d  (10.32 h)
Rise/eclipse dur. --
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 Otero, Sebastian Alberto Combined range given. A= 3.54V; B= 5.61V. Position of the brightest component given. If variations are indeed BCEP, then it is likely that B is the variable star.
2 GCVS Team AB: 3.7, 5.6, 4".4, 44deg, 1923; C: 11.5, 29", 184deg; D: 11.5, 78", 271deg.
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References
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1 Simón-Díaz, S.; Godart, M.; Castro, N.; et al., 2017, The IACOB project .
III. New observational clues to understand macroturbulent broadening in
massive O- and B-type stars		 2017A&A...597A..22S
2 Ricker, G. R.; et al., 2014, Transiting Exoplanet Survey Satellite (TESS) 2014SPIE.9143E..20R
3 Perryman, M. A. C.; et al., 1997, The HIPPARCOS and TYCHO catalogues 1997HIP...C......0E
4 B.A.Gould, Cord Res 1, 128-342, 1879. --
External Links
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Location    Go   
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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 = 3.73H = 3.77K = 3.88J - K = -0.14
AllWISE W1 = 3.95W2 = 3.63W3 = 4.00W4 = 3.09W1 - W2 = 0.33W3 - W4 = 0.91
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 05 35 08.28 +09 56 03.0 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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1 Phase plot Otero, Sebastian Alberto 2023-08-25 00:12 UTC Phase plot with TESS data.
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Revision History
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3 Otero, Sebastian Alberto 2023-08-25 00:11 UTC Type, period, epoch and amplitude from TESS data. Mean magnitude derived from GCPD and Hipparcos data. Spectral type from 2017A&A...597A..22S.
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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