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Latest Details
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Log in to retrieve additional aliases from SIMBAD. |
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| Name |
del Ori |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
05 29 27.04 -00 20 04.3 |
| Proper motion |
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| Galactic coord. |
203.856 -17.740 |
Other names
(Internal only)
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34 Ori A |
del Ori A |
1RXS J053200.8-001755 |
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AAVSO 0526-00B |
ADS 4134 A |
ALS 14779 |
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BD-00 983 |
HD 36486 |
HIP 25930 |
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HR 1851 |
HR 1852 |
IRC +00076 |
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SAO 132220 |
X 05294-003 |
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(Not logged in) Add name
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| Variability type |
EA+HB+ROT![]() PUL |
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| Spectral type |
O9.5II+B2V |
| Mag. range |
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2.20 - 2.32 V |
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| Discoverer |
-- |
| Epoch |
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| Outburst |
-- |
| Period |
5.73249 d |
| Rise/eclipse dur. |
13% (17.9 h) |
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Remarks
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Some references may be clicked to view in new window. Roll over index number to view submission details.
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1 |
Otero, Sebastian Alberto
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Range is for the combined brightness of the eclipsing binary (Aa1-Aa2) and the tertiary companion Ab 0".27 away (V= 3.83; B0IV; Aa-Ab period 152 y). C companion (V= 6.84) is 52" away and is also a binary (CaCb, B3V+A0V) with P= 29.96 d. B is a faint K dwarf (V= 13.2; sep. 33") unrelated to the system. Eccentric system with apsidal motion (P= 201 years) probably caused by the tertiary component. Min II V= 2.27 at phase 0.45. Elements given are for Min I. Elements for Min II= HJD 2448742.21 + 5.73240 x E. Sidereal period 5.732436 d. HB amplitude 0.02. Several additional frequencies detected, with main periods 4.572 d (rotation of Aa1?), 2.522 d (pulsation?), 2.090 d (rotation of Ab?) and 1.075 d (pulsation?). Pulsations may be BCEP and SPB and come from either the primary (Aa1), or the tertiary (Ab) (2023A&A...672A..31O). Also likely tidally-induced pulsations (2015ApJ...809..134P). |
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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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Click reference title/citation to view in new window. Roll over index number to view submission details.
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1 |
Oplištilová, A.; Mayer, P.; Harmanec, P.; et al., 2023, Spectrum of the
secondary component and new orbital elements of the massive triple star
δ Ori A |
2023A&A...672A..31O |
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2 |
Pablo, H.; Richardson, N. D.; Moffat, A. F. J.; et al., 2015, A Coordinated
X-Ray and Optical Campaign of the Nearest Massive Eclipsing Binary, δ
Orionis Aa. III. Analysis of Optical Photometric (MOST) and Spectroscopic
(Ground-based) Variations |
2015ApJ...809..134P |
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3 |
Mayer, P., et al., 2010, Physical elements of the eclipsing binary δ
Orionis |
2010A&A...520A..89M |
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4 |
R.H.Koch, B.J.Hrivnak, ApJ 248, 249, 1981. |
1981ApJ...248..249K |
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5 |
W.H.Warren, Jr., J.E.Hesser, ApJ Suppl 34, 115, 1977. |
1977ApJS...34..115W |
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External Links
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Location
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Catalog Data
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Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
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2MASS
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J = 2.74 | H = 2.98 | K = 3.02 | J - K = -0.28 |
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AllWISE
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W1 = 2.96 | W2 = 2.65 | W3 = 2.95 | W4 = 2.75 | W1 - W2 = 0.31 | W3 - W4 = 0.20 |
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