UX Orionis
Observation data J2000
| |
---|---|
Constellation | Orion |
Right ascension | 05h 04m 29.9879s[2] |
Declination | −03° 47′ 14.2867″[2] |
Apparent magnitude (V) | 9.48 – 12.5[3] |
Characteristics | |
Spectral type | A3ea[3] |
Details | |
Myr | |
Database references | |
SIMBAD | data |
UX Orionis is a
light years from the Earth.[8] At its brightest it is a magnitude 9.5 object, so it is too faint to be seen with the naked eye.[3] UX Orionis is the prototype of the UX Orionis class of variable stars (often called "UXors"), which are young stellar objects that exhibit large (greater than 2.8 magnitude), irregular changes in visual band brightness.[9][3] UX Orionis was discovered by Henrietta Swan Leavitt.[3]
UX Orionis is surrounded by a circumstellar disk, and the star's photometric variability appears to be caused by episodes during which the star is obscured by dusty material within the circumstellar disk.[8]
References
- ^ "ASAS All Star Catalogue". The All Sky Automated Survey. Retrieved 10 November 2022.
- ^ S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c d e "UX Ori". The International Variable Star Index. AAVSO. Retrieved 10 November 2022.
- ^ S2CID 166227927.
- Bibcode:2005yCat.3244....0G.
- S2CID 17545474.
- ^ "UX Ori". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 November 2022.
- ^ .
- doi:10.1086/117204.