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Name
del Ori
AAVSO UID
Constellation
J2000.0
B1950.0
05 29 27.04 -00 20 04.3
Proper motion
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
ASASSN-V J053200.29-001755.5
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
Outburst
--
Period
5.73249 d
Rise/eclipse dur.
13% (17.9 h)
Remarks
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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
Bob Nelson's O-C files, 2016
--
2
Mayer, P., et al., 2010, Physical elements of the eclipsing binary δ
2010A&A...520A..89M
3
R.H.Koch, B.J.Hrivnak, ApJ 248, 249, 1981.
1981ApJ...248..249K
4
W.H.Warren, Jr., J.E.Hesser, ApJ Suppl 34, 115, 1977.
1977ApJS...34..115W
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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 = 2.74 H = 2.98 K = 3.02 J - K = -0.28
AllWISE
W1 = 2.96 W2 = 2.65 W3 = 2.95 W4 = 2.75 W1 - W2 = 0.31 W3 - W4 = 0.20
Images
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