Dog Star
E712260
The Dog Star is the brightest star in the night sky, located in the constellation Canis Major and forming part of the prominent winter sky in the Northern Hemisphere.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | star ⓘ |
| age_years | about 2.4×10^8 years ⓘ |
| alsoKnownAs |
Alpha Canis Majoris
NERFINISHED
ⓘ
Canicula NERFINISHED ⓘ Sirius NERFINISHED ⓘ Sothis NERFINISHED ⓘ α Canis Majoris NERFINISHED ⓘ |
| apparentMagnitude | −1.46 ⓘ |
| BayerDesignation | α Canis Majoris NERFINISHED ⓘ |
| brightnessRank | brightest star in the night sky ⓘ |
| colorIndexB−V | +0.00 ⓘ |
| constellation | Canis Major NERFINISHED ⓘ |
| culturalAssociation |
Dog Days of summer
ⓘ
Egyptian calendar star Sothis NERFINISHED ⓘ |
| declination_J2000 | −16° 42′ 58″ ⓘ |
| distanceFromEarth_ly | about 8.6 light‑years ⓘ |
| distanceFromEarth_pc | about 2.64 parsecs ⓘ |
| effectiveTemperature_K | about 9940 K ⓘ |
| FlamsteedDesignation | 9 Canis Majoris NERFINISHED ⓘ |
| galacticLatitude_deg | about −8.89 ⓘ |
| galacticLongitude_deg | about 227.23 ⓘ |
| hasCompanion | white dwarf Sirius B NERFINISHED ⓘ |
| hemisphereVisibility | visible from both Northern and Southern Hemispheres ⓘ |
| hostConstellationTranslation | Greater Dog NERFINISHED ⓘ |
| IAUName | Sirius NERFINISHED ⓘ |
| luminosityRelativeToSun | about 25 times solar luminosity ⓘ |
| massRelativeToSun | about 2.0 solar masses ⓘ |
| notableProperty |
exhibits significant proper motion
ⓘ
one of the nearest bright stars to Earth ⓘ |
| observedSinceAntiquity | true ⓘ |
| orbitalPeriod_years | about 50.1 years ⓘ |
| parallax_mas | about 379.21 milliarcseconds ⓘ |
| primaryComponent | Sirius A NERFINISHED ⓘ |
| properMotionDec_masPerYear | −1223.08 ⓘ |
| properMotionRA_masPerYear | −546.01 ⓘ |
| radialVelocity_kmPerSec | about −5.5 ⓘ |
| radiusRelativeToSun | about 1.7 solar radii ⓘ |
| rightAscension_J2000 | 06h 45m 08.9s ⓘ |
| seasonalProminence | prominent in the winter sky of the Northern Hemisphere ⓘ |
| secondaryComponent | Sirius B NERFINISHED ⓘ |
| SiriusA_instanceOf | main‑sequence star ⓘ |
| SiriusA_spectralType | A1V ⓘ |
| SiriusB_instanceOf | white dwarf ⓘ |
| SiriusB_spectralType | DA2 ⓘ |
| spectralType | A1V ⓘ |
| systemType | binary star system ⓘ |
| visibleToNakedEye | true ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.