Alpha Canis Majoris
E715697
Alpha Canis Majoris is the brightest star in the night sky, located in the constellation Canis Major and commonly known as Sirius.
Observed surface forms (2)
| Surface form | Occurrences |
|---|---|
| 9 Canis Majoris | 1 |
| α Canis Majoris | 1 |
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf | star ⓘ |
| age_billionYears | about 0.24 ⓘ |
| alsoKnownAs |
Alpha CMa
NERFINISHED
ⓘ
Dog Star NERFINISHED ⓘ Sirius NERFINISHED ⓘ Sirius A and Sirius B NERFINISHED ⓘ α Canis Majoris NERFINISHED ⓘ |
| apparentMagnitude | −1.46 ⓘ |
| belongsTo | Local Bubble NERFINISHED ⓘ |
| binaryEccentricity | about 0.59 ⓘ |
| binaryOrbitalPeriod_years | about 50.1 ⓘ |
| binarySemiMajorAxis_AU | about 20 ⓘ |
| colorIndex_BV | about 0.00 ⓘ |
| culturalAssociation |
Canicula in Latin tradition
ⓘ
Dog Star in Greco-Roman tradition ⓘ Tishtrya in ancient Persian astronomy ⓘ dog of Orion ⓘ |
| declination_J2000 | −16° 42′ 58″ ⓘ |
| distanceFromEarth_ly | about 8.6 ⓘ |
| distanceFromEarth_pc | about 2.64 ⓘ |
| effectiveTemperature_K | about 9940 ⓘ |
| galacticPopulation | thin disk ⓘ |
| hasBayerDesignation | α Canis Majoris NERFINISHED ⓘ |
| hasCompanion | Sirius B NERFINISHED ⓘ |
| hasCompanionType | white dwarf (Sirius B) NERFINISHED ⓘ |
| hasFlamsteedDesignation | 9 Canis Majoris NERFINISHED ⓘ |
| hasGlieseNumber | Gliese 244 NERFINISHED ⓘ |
| hasHDNumber | HD 48915 NERFINISHED ⓘ |
| hasHIPNumber | HIP 32349 NERFINISHED ⓘ |
| hasHRNumber | HR 2491 NERFINISHED ⓘ |
| hasTraditionalName | Sirius NERFINISHED ⓘ |
| heliacalRisingAssociatedWith | ancient Egyptian calendar ⓘ |
| is | brightest star in the night sky ⓘ |
| isPartOf | Milky Way NERFINISHED ⓘ |
| locatedInConstellation | Canis Major NERFINISHED ⓘ |
| luminosity_solar | about 25 ⓘ |
| mass_solar | about 2.0 ⓘ |
| memberOf | Sirius supercluster (proposed) NERFINISHED ⓘ |
| metallicity_FeH | about +0.5 ⓘ |
| parallax_mas | about 379.21 ⓘ |
| properMotion_Dec_masPerYear | −1223.08 ⓘ |
| properMotion_RA_masPerYear | −546.01 ⓘ |
| radialVelocity_kmPerSec | about −5.5 ⓘ |
| radius_solar | about 1.7 ⓘ |
| rightAscension_J2000 | 06h 45m 08.9s ⓘ |
| SiriusB_effectiveTemperature_K | about 25200 ⓘ |
| SiriusB_mass_solar | about 1.0 ⓘ |
| SiriusB_spectralType | DA2 ⓘ |
| spectralType | A1V ⓘ |
| visibleFrom | both Northern and Southern Hemispheres ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
α Canis Majoris
this entity surface form:
9 Canis Majoris