Dubhe

Dubhe
	Dubhe se ligging (in die rooi sirkel).
Sterrebeeld	Groot Beer
Bayer-naam	Alpha Ursae Majoris
Spektraaltipe	K0 III + F0 V
Soort	Veelvoudig
	Waarnemingsdata (Epog J2000)
Regte klimming	11h 03m 43.67152s
Deklinasie	+61° 45′ 03.7249″
Skynmagnitude (m)	1,79
Absolute magnitude (M)	-1,1 ± 0,04
B-V-kleurindeks	+1,07
U-B-kleurindeks	+0,93
	Besonderhede
Komponent 1	α UMa A
Massa (M☉)	4,25
Ligsterkte (L☉)	316
Temperatuur (K)	4 660
Rotasiespoed (km/s)	2,6 ± 1
Metaalinhoud [Fe/H]	-0,2 ± 0,07
Komponent 2	α UMa B
Massa (M☉)	~1,6
	Eienskappe
Afstand (ligjaar)	123
Veranderlikheid	Vermoed
	Ander name
	Ak, 50 Ursae Majoris, BD+62°1161, ; CCDM J11037+6145AB, FK5 417, ; GC 15185, HD 95689, HIP 54061, ; HR 4301, PPM 17705, SAO 15384, ; WDS J11037+6145AB
Portaal	Sterrekunde

Dubhe (ook bekend as Alpha Ursae Majoris of α UMa) is ondanks sy Bayer-aanwysing van alpha die tweede helderste ster in die sterrebeeld Groot Beer (Ursa Major).

↑ ^1,0 ^1,1 ^1,2 ^1,3 Guenther, D. B.; Demarque, P.; Buzasi, D.; Catanzarite, J.; Laher, R.; Conrow, T.; Kreidl, T. (2000). "Evolutionary Model and Oscillation Frequencies for α Ursae Majoris: A Comparison with Observations". The Astrophysical Journal. 530 (1): L45–L48. Bibcode:2000ApJ...530L..45G. doi:10.1086/312473. PMID 10642202.
↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named msc
↑ ^3,0 ^3,1 Verwysingfout: Invalid <ref> tag; no text was provided for refs named aaa474_2_653
↑ ^4,0 ^4,1 ^4,2 Verwysingfout: Invalid <ref> tag; no text was provided for refs named clpl4_99
↑ ^5,0 ^5,1 Verwysingfout: Invalid <ref> tag; no text was provided for refs named aj135_3_892
↑ ^6,0 ^6,1 Verwysingfout: Invalid <ref> tag; no text was provided for refs named ajss74_1075
↑ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Oorspronklik in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named SIMBAD

[guenther-1] 1,0 ^1,1 ^1,2 ^1,3 Guenther, D. B.; Demarque, P.; Buzasi, D.; Catanzarite, J.; Laher, R.; Conrow, T.; Kreidl, T. (2000). "Evolutionary Model and Oscillation Frequencies for α Ursae Majoris: A Comparison with Observations". The Astrophysical Journal. 530 (1): L45–L48. Bibcode:2000ApJ...530L..45G. doi:10.1086/312473. PMID 10642202.

[msc-2] Verwysingfout: Invalid <ref> tag; no text was provided for refs named msc

[aaa474_2_653-3] 3,0 ^3,1 Verwysingfout: Invalid <ref> tag; no text was provided for refs named aaa474_2_653

[clpl4_99-4] 4,0 ^4,1 ^4,2 Verwysingfout: Invalid <ref> tag; no text was provided for refs named clpl4_99

[aj135_3_892-5] 5,0 ^5,1 Verwysingfout: Invalid <ref> tag; no text was provided for refs named aj135_3_892

[ajss74_1075-6] 6,0 ^6,1 Verwysingfout: Invalid <ref> tag; no text was provided for refs named ajss74_1075

[gcvs-7] Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Oorspronklik in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.

[SIMBAD-8] Verwysingfout: Invalid <ref> tag; no text was provided for refs named SIMBAD

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