Pollux

Pollux
Pollux se ligging (in die rooi sirkel).
Sterrebeeld	Tweeling
Bayer-naam	Beta Geminorum
Spektraaltipe	K0 III[1]
Soort	Reusester
Waarnemingsdata (Epog J2000)
Regte klimming	07h 45m 18.94987s[2]
Deklinasie	+28° 01′ 34.3160″[2]
Skynmagnitude (m)	1,14[3]
Absolute magnitude (M)	1,08[4]
B-V-kleurindeks	+1,00[3]
U-B-kleurindeks	+0,86[3]
Besonderhede
Massa (M☉)	1,91[5]
Radius (R☉)	8,8[6]
Ligsterkte (L☉)	43[7]
Ouderdom (jaar)	724 miljoen[8]
Temperatuur (K)	4 666[6]
Rotasiespoed (km/s)	2,8[9]
Metaalinhoud [Fe/H]	-0,07 tot +0,19[6]
Eienskappe
Veranderlikheid	Vermoed[10]
Ander name
78 Geminorum, BD+28°1463, GCTP 1826.00, Gliese 286, HD 62509, HIP 37826, HR 2990, LFT 548, LHS 1945, LTT 12065, SAO 79666.
Portaal    Sterrekunde

Pollux (ook bekend as Beta Geminorum of β Gem) is ’n oranjekleurige, geëvolueerde reusester sowat 34 ligjare van die Son af in die noordelike sterrebeeld Tweeling (Gemini). Dit is die helderste ster in die Tweeling en die naaste reusester aan die Son.

Die ster se spektrum dien sedert 1943 as een van die stabiele ankerpunte waarvolgens ander sterre geklassifiseer word.^[11] In 2006 is bevestig die eksoplaneet Pollux b, of β Geminorum b (later Thestias genoem), wentel om Pollux.^[6]

1. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named araa11_29
2. ↑ ^{2,0 2,1} Verwysingfout: Invalid <ref> tag; no text was provided for refs named aaa474_2_653
3. ↑ ^{3,0 3,1 3,2} Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237: 0. Bibcode:2002yCat.2237....0D.
4. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named aj135_3_892
5. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named Hatzes2012
6. ↑ ^{6,0 6,1 6,2 6,3} Verwysingfout: Invalid <ref> tag; no text was provided for refs named aaa457_335
7. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named aaa352_495
8. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named pasj60_4_781
9. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named aj135_1_209
10. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named petit1990
11. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named baas25_1319