Arkab Prior
L☉
| Doppelstern Arkab Prior (β1 Sagittarii) | |||||||||
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| AladinLite | |||||||||
| Beobachtungsdaten Äquinoktium: J2000.0, Epoche: J2000.0 | |||||||||
| Sternbild | Schütze | ||||||||
| Rektaszension | 19h 22m 38,29s [1] | ||||||||
| Deklination | −44° 27′ 32,3″ [1] | ||||||||
| Helligkeiten | |||||||||
| Scheinbare Helligkeit | 3,96 mag[1] | ||||||||
| Spektrum und Indices | |||||||||
| Spektralklasse | B9 V[1] | ||||||||
| Astrometrie | |||||||||
| Entfernung | 380 Lj | ||||||||
| Physikalische Eigenschaften | |||||||||
| Andere Bezeichnungen und Katalogeinträge | |||||||||
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Arkab Prior (arabisch عرقوب, DMG 'Arqūb ‚Achillessehne‘ und lateinisch prior „der Erste“) ist die Bezeichnung des Sterns β1 Sagittarii (Beta 1 Sagittarii). Arkab Prior hat eine scheinbare Helligkeit von +3,96 mag und gehört dem Spektraltyp B9V an. Arkob Prior ist 380 Lichtjahre entfernt. Arkab Prior hat einen Begleiter der Helligkeit +7,2 mag in einem Winkelabstand von 28,3" bei einem Positionswinkel von 77 Grad, der in Fernrohren ab 5 Zentimeter Öffnung problemlos sichtbar ist.
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