Alioth
| ||||
![]() | ||||
Alioth se ligging (in die rooi sirkel). | ||||
Sterrebeeld | Groot Beer | |||
Bayer-naam | Epsilon Ursae Majoris | |||
Spektraaltipe | A1 III-IVp kB9 | |||
Soort | Reusester | |||
Waarnemingsdata (Epog J2000) | ||||
Regte klimming | 12h 54m 01.74959s[1] | |||
Deklinasie | +55° 57′ 35.3627″[1] | |||
Skynmagnitude (m) | 1,77[2] | |||
Absolute magnitude (M) | -0,2[3] | |||
B-V-kleurindeks | -0,02[2] | |||
U-B-kleurindeks | +0,02[2] | |||
Besonderhede | ||||
Massa (M☉) | 2,91[4] | |||
Radius (R☉) | 4,14[5] | |||
Ligsterkte (L☉) | 102[6] | |||
Ouderdom (jaar) | 300 miljoen[7] | |||
Temperatuur (K) | 9 020[8] | |||
Rotasiespoed (km/s) | 33[9] | |||
Metaalinhoud [Fe/H] | +0,00[3] | |||
Eienskappe | ||||
Veranderlikheid | α2 CVn | |||
Ander name | ||||
Allioth, Aliath, Epsilon Ursae Majoris, 77 Ursae Majoris, BD+56°1627, FK5 483, GC 17518, HD 112185, HIP 62956, HR 4905, PPM 33769, SAO 28553 | ||||
|
Alioth (ook bekend as Epsilon Ursae Majoris of ε UMa) is die helderste ster in die sterrebeeld Groot Beer (Ursa Major), al het dit die Bayer-aanwysing epsilon. Met ’n skynbare magnitude van 1,77 is dit die 32ste helderste ster in die naglug.
Dit is die ster in die stert van die Groot Beer die naaste aan sy lyf, en lid van die Ursa Major-sterregroep wat saam deur die lug beweeg. Die ster is histories dikwels in skeepshandel vir navigasie gebruik.
<ref>
tag; no text was provided for refs named aaa474_2_653
<ref>
tag; no text was provided for refs named clpl4_99
<ref>
tag; no text was provided for refs named aass77_1_41
<ref>
tag; no text was provided for refs named apjss192_1_2
<ref>
tag; no text was provided for refs named shulyak
<ref>
tag; no text was provided for refs named vlbi
<ref>
tag; no text was provided for refs named nakajima
<ref>
tag; no text was provided for refs named gray
<ref>
tag; no text was provided for refs named aaa393_897