Arkab Prior
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Double star Arkab Prior (β 1 Sagittarii) |
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Sagittarius | ||||||||
| Right ascension | 19 h 22 m 38.29 s | ||||||||
| declination | -44 ° 27 ′ 32.3 ″ | ||||||||
| Apparent brightness | 3.96 likes | ||||||||
| Typing | |||||||||
| Spectral class | B9 V | ||||||||
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| distance | 380 ly | ||||||||
| Physical Properties | |||||||||
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Other names and catalog entries |
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Arkab Prior ( Arabic عرقوب, DMG 'Arqūb ' Achilles tendon 'and Latin prior "the first") is the name of the star β1 Sagittarii (Beta 1 Sagittarii). Arkab Prior has an apparent magnitude of +3.96 mag and belongs to the spectral type B9V. Arkob Prior is 380 light years away. Arkab Prior has a companion with a brightness of +7.2 mag at an angular distance of 28.3 "at a position angle of 77 degrees, which is easily visible in telescopes with an aperture of 5 centimeters or more.