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Name
  del Ori  
AAVSO UID
000-BCW-648 (1862 observations)  
Constellation
Orion Sequence
J2000.0
05 32 00.40 -00 17 56.7  (83.00167 -0.29908) Search nearby
B1950.0 05 29 27.04 -00 20 04.3
Proper motion
RA: 0.64 +/- 0.56 mas/yDec: -0.69 +/- 0.27 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 203.856 -17.740
Other names

(Internal only)
34 Ori A del Ori A 1RXS J053200.8-001755
AAVSO 0526-00B ADS 4134 A ALS 14779
BD-00 983 HD 36486 HIP 25930
HR 1851 HR 1852 IRC +00076
SAO 132220 X 05294-003  
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Variability type
EA
Spectral type O9.5II+B0.5III
Mag. range
2.20 - 2.32 V
Discoverer --
Epoch
07 Oct 1990 (HJD 2448172.066) Ephemeris
Outburst --
Period 5.73249 d
Rise/eclipse dur. 13%
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 Otero, Sebastian Alberto Range is for the combined brightness of the eclipsing binary and the V= 3.83 companion 0".27 away. Min II V= 2.27. Eccentric system with apsidal motion (per= 201 years) probably caused by the tertiary component. Elements given are for Min I. Elements for Min II= HJD 2448742.21 + 5.73240 x E. Sidereal period 5.732436 d.
2 GCVS Team VB A (A 0.217", 144deg, 1980; B 14.0m, 33.1", 227deg; C 6.84m, 53.5", 359deg). Orion Belt cluster member. Min II 2.20. Apsidal motion (P = 210 yr). Shape of the light curve varies. The intrinsic brightness variability of the components is possible.
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References
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1 Mayer, P., et al., 2010, Physical elements of the eclipsing binary δ
Orionis
2010A&A...520A..89M
2 R.H.Koch, B.J.Hrivnak, ApJ 248, 249, 1981. 1981ApJ...248..249K
3 W.H.Warren, Jr., J.E.Hesser, ApJ Suppl 34, 115, 1977. 1977ApJS...34..115W
4 Bob Nelson's O-C files, 2016 --
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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 = 2.74H = 2.98K = 3.02J - K = -0.28
AllWISE W1 = 2.96W2 = 2.65W3 = 2.95W4 = 2.75W1 - W2 = 0.31W3 - W4 = 0.20
Images
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Supporting Documents
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1 Phase plot Otero, Sebastian Alberto 2012-12-03 23:12 UTC Phase plot combining data published in 2010A&A...520A..89M.
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Campaigns/Programs
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Revision History
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3 Otero, Sebastian Alberto 2012-12-03 23:12 UTC Elements from all data published in 2010A&A...520A..89M. Range from Hipparcos, GCPD and data in 2010A&A...520A..89M.
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.