Alkaid

Alkaid
Locatie van Alkaid in het sterrenbeeld Grote Beer.
Locatie van Alkaid in het sterrenbeeld Grote Beer.
Bayeraanduiding η UMa
Flamsteed­aanduiding 85 UMa
Overige aanduidingen HD 120315, HR 5191, SAO 44752, BD+50 2027, RAFGL 49165, IRC +50233, IRAS 13455+4933
Massa 6 M☉
Oppervlakte­temperatuur 20.000 K
Spectraalklasse B3V
Lichtkracht 700 L☉
Veranderlijk Amplitude 0,06 magnitude
Waarnemingsgegevens
Rechte klimming 13u47m32,4s
Declinatie 49° 18' 48"
Sterrenbeeld Grote Beer (Ursa Major)
Eigenbeweging (μ) Rk: −121,17 mas/jr
Dec: −14,91 mas/jr
Schijnbare helderheid 1,86 mag
Afstand 103,938 lj (P=31,38 mas)[1]
Portaal  Portaalicoon   Astronomie

Alkaid (eta Ursae Majoris) is een heldere ster in het sterrenbeeld Grote Beer (Ursa Major). De ster staat ook bekend als Benetnash, Benetnasch en Elkeid en maakt deel uit van de Pleiadengroep.

Zie ook

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