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Theta Orionis
The Bayer designation θ Orionis (Theta Orionis) is shared by several astronomical objects, located near right ascension, RA declination, DEC : * Trapezium Cluster, θ1 Orionis (41 Orionis), the Trapezium Cluster, an open star cluster, the ''Orion OB Association 1d'' ** Theta1 Orionis A, θ1 Orionis A (41 Orionis A, HD 37020, V1016 Orionis), a trinary star system ** Theta1 Orionis B, θ1 Orionis B (41 Orionis B, HD 37021), a quintet star system *** θ1 Orionis B West (COUP 766, MAX 97), an astronomical X-ray source *** θ1 Orionis B East (COUP 778, MAX 101), an astronomical X-ray source ** Theta1 Orionis C, θ1 Orionis C (41 Orionis C, HD 37022), a binary star system ** Theta1 Orionis D, θ1 Orionis D (41 Orionis D, HD 37023), a B0.5Vp variable star ** Theta1 Orionis E, θ1 Orionis E (COUP 732), a spectroscopic binary star system ** Theta1 Orionis F, θ1 Orionis F, a B8 variable star at 11th magnitude ** Theta1 Orionis G, θ1 Orionis G (COUP 826, MAX 116), a young stellar object ** ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bayer Designation
A Bayer designation is a stellar designation in which a specific star is identified by a Greek or Latin letter followed by the genitive form of its parent constellation's Latin name. The original list of Bayer designations contained 1,564 stars. The brighter stars were assigned their first systematic names by the German astronomer Johann Bayer in 1603, in his star atlas ''Uranometria''. Bayer catalogued only a few stars too far south to be seen from Germany, but later astronomers (including Nicolas-Louis de Lacaille and Benjamin Apthorp Gould) supplemented Bayer's catalog with entries for southern constellations. Scheme Bayer assigned a lowercase Greek letter (alpha (α), beta (β), gamma (γ), etc.) or a Latin letter (A, b, c, etc.) to each star he catalogued, combined with the Latin name of the star's parent constellation in genitive (possessive) form. The constellation name is frequently abbreviated to a standard three-letter form. For example, Aldebaran in the constellation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
