Theta1 Orionis A
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Orion |
| Right ascension | 05h 35m 15.84743s [1] |
| Declination | −05° 23′ 14.3441″ [1] |
| Spectral type | B0.5V [1] |
Theta1 Orionis A (θ1 Ori A) is a variable trinary star in the constellation Orion. Its apparent magnitude range is 6.72 to 7.65 with a period of 65.432 days.[2] It is one of the main stars in The Trapezium in Orion, with the others being B, C, D and E.[3]
Trapezium star identification
References
- 1 2 3 SIMBAD, V1016 Orionis (accessed 4 January 2013)
- ↑ "Trapezium (Theta1 Orionis)". The Worlds of David Darling. Retrieved 31 July 2014.
- ↑ "Theta-1 Orionis". Retrieved 31 July 2014.
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