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Groombridge 1830 NavigatiemenuPlaats uw zelfgemaakte foto hierGroombridge 1830

Grote BeerSubdwerg


stersubdwergsterrenbeeldGrote BeerSter van BarnardSter van Kapteyneigenbewegingboogsecondenrechte klimmingdeclinatie












Groombridge 1830




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Groombridge 1830


Plaats uw zelfgemaakte foto hier
Overige aanduidingenBD+38 2285, FK5 1307, GCTP 2745.00, GJ 451, HIP 57939, HR 4550, HD 103095, LHS 44, LTT 13276, SAO 62738, Argelander's Star

Fysische gegevens
B-V-kleurindex+0.75
Diameter0.681 ± 0.006 R☉
Massa0,661 M☉
Oppervlaktetemperatuur4.759 ± 20 K K
SpectraalklasseG8VIp
Lichtkracht0.212 ± 0.002 L☉
Veranderlijkmisschien

Waarnemingsgegevens
StandaardepocheJ2000
Rechte klimming11u52m55,816s
Declinatie37° 43' 58,11"
Sterrenbeeld
Grote Beer (Ursa Major)
Schijnbare helderheid6,44 mag
Afstand29,65 lj (P=109,99 mas)




Portaal  Portaalicoon  

Astronomie

Groombridge 1830 is een ster (een subdwerg) in het sterrenbeeld Grote Beer (Ursa Major). De ster heeft na de Ster van Barnard en de Ster van Kapteyn de grootste eigenbeweging (+4,00398 boogseconden per jaar in rechte klimming en -5,81362 boogseconden per jaar in declinatie).





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