HR 2491

E712262

star

HR 2491 is the Harvard Revised (Bright Star Catalogue) designation for Sirius, the brightest star in the night sky located in the constellation Canis Major.

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Statements (47)

Predicate	Object
instanceOf	star ⓘ
alsoKnownAs	Alpha Canis Majoris NERFINISHED ⓘ Sirius NERFINISHED ⓘ
apparentMagnitude	-1.46 ⓘ
associatedConstellationFigure	Greater Dog NERFINISHED ⓘ
brightestStarInNightSky	true ⓘ
catalogDesignation	Bright Star Catalogue NERFINISHED ⓘ Harvard Revised Catalogue NERFINISHED ⓘ
colorIndexBMinusV	0.00 ⓘ
component	Sirius A NERFINISHED ⓘ Sirius B NERFINISHED ⓘ
constellation	Canis Major NERFINISHED ⓘ
declination	-16° 42′ 58″ ⓘ
distanceFromEarth_ly	about 8.6 ⓘ
distanceFromEarth_pc	about 2.64 ⓘ
effectiveTemperature_K	about 9940 ⓘ
epoch	J2000 ⓘ
galacticLatitude_deg	about -8.9 ⓘ
galacticLongitude_deg	about 227.2 ⓘ
hemisphereVisibility	both hemispheres ⓘ
IAUApprovedName	Sirius NERFINISHED ⓘ
metallicity_FeH	about +0.4 ⓘ
orbitalPeriod_years	about 50.1 ⓘ
parallax_mas	about 379.2 ⓘ
primaryComponent	Sirius A NERFINISHED ⓘ
properMotionDec_masPerYear	-1223.08 ⓘ
properMotionRA_masPerYear	-546.01 ⓘ
radialVelocity_kmPerSec	about -5.5 ⓘ
rankByBrightness	1 ⓘ
rightAscension	06h 45m 08.9s ⓘ
secondaryComponent	Sirius B NERFINISHED ⓘ
semiMajorAxis_AU	about 20 ⓘ
SiriusA_instanceOf	main-sequence star ⓘ
SiriusA_luminosity_solar	about 25 ⓘ
SiriusA_mass_solar	about 2.0 ⓘ
SiriusA_radius_solar	about 1.7 ⓘ
SiriusA_spectralType	A1V ⓘ
SiriusB_effectiveTemperature_K	about 25200 ⓘ
SiriusB_instanceOf	white dwarf ⓘ
SiriusB_mass_solar	about 1.0 ⓘ
SiriusB_radius_solar	about 0.0084 ⓘ
SiriusB_spectralType	DA2 ⓘ
spectralType	A1V ⓘ
systemType	binary star system ⓘ
traditionalNameMeaning	scorching ⓘ
traditionalNameOrigin	Greek ⓘ
visibleFromEarth	yes ⓘ

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

Sirius → hasHRDesignation → HR 2491 ⓘ