Gamma Ursae Minoris

Starbox begin
name=Gamma Ursae Minoris [cite web
title=Simbad Query Result | work=Simbad
url=http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=13+UMi&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id
accessdate=October 5
accessyear=2007] Starbox observe
epoch=J2000.0
constell=Ursa Minor
ra=15h 20m 43.7155s
dec=+71° 50' 02.458"
appmag_v=+3.027 Starbox character
class=A3Iab:
b-v=+0.05
u-b=+0.12 Starbox astrometry
radial_v=-3.9
prop_mo_ra=-18.03
prop_mo_dec=17.68
parallax=6.79
p_error=0.46 |Starbox catalog
names=Pherkad, Pherkad Major, Gamma Ursae Minoris, 13 Ursae Minoris, HR 5735, BD+72°679, HD 137422, SAO 8220, HIP 75097, GC 20692

Gamma Ursae Minoris (γ UMi / γ Ursae Minoris) is a slightly variable star in the constellation Ursa Minor. It also has the common name Pherkad. Together with Beta Ursae Minoris, Gamma forms the end of the dipper pan of the "Little Dipper". The name "Pherkad" derives from the Arabic for "the two calves," which originally referred to both Kochab and Pherkad. Together, they are also called the "Guardians of the Pole."cite web
title=Pherkad | work=Simbad
url=http://www.astro.uiuc.edu/~kaler/sow/pherkad.html
accessdate=October 5
accessyear=2007]

Gamma Ursae Minoris has apparent magnitude +3.00. It is approximately 480 light years from Earth and is of spectral class A3, meaning it has a surface temperature of 7,500 to 11,000 kelvins. It is classified as a Delta Scuti type variable star and its brightness varies by 0.05 magnitudes with a period of 3.43 hours. It is 1100 times more luminous than the Sun, and possesses a radius 15 times that of the Sun.

References