Antares
E472715
Antares is a bright red supergiant star, one of the largest and most luminous visible to the naked eye, located in the constellation Scorpius.
Observed surface forms (2)
| Surface form | Occurrences |
|---|---|
| Antares B | 0 |
| Antares star | 1 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
celestial object
ⓘ
main-sequence star ⓘ red supergiant star ⓘ star ⓘ |
| age | about 11 million years ⓘ |
| apparentMagnitude | about 1.0 ⓘ |
| apparentMagnitudeRange | +0.6 to +1.6 ⓘ |
| bayerDesignation | α Scorpii NERFINISHED ⓘ |
| belongsTo | Milky Way NERFINISHED ⓘ |
| binarySystemType | wide binary ⓘ |
| color |
bluish-white
ⓘ
red ⓘ |
| constellation | Scorpius NERFINISHED ⓘ |
| culturalSignificance | associated with the heart of the scorpion in many cultures ⓘ |
| declination | −26° 25′ 55″ ⓘ |
| distanceFromEarth |
about 170 parsecs
ⓘ
about 550 light-years ⓘ |
| effectiveTemperature | about 3,500 K ⓘ |
| equatorialCoordinatesEpoch | J2000 ⓘ |
| evolutionaryStage | late-stage massive star ⓘ |
| flamsteedDesignation | 21 Scorpii NERFINISHED ⓘ |
| futureEvolution | will explode as a core-collapse supernova ⓘ |
| galacticLatitude | about +15° ⓘ |
| galacticLongitude | about 351° ⓘ |
| galacticPopulation | Population I star ⓘ |
| hasCompanion | Antares B NERFINISHED ⓘ |
| hasExtendedAtmosphere | true ⓘ |
| hasStellarWind | strong stellar wind ⓘ |
| isBrightestStarOf | Scorpius NERFINISHED ⓘ |
| isReferenceStarFor | Scorpius constellation shape ⓘ |
| isVisibleToNakedEye | true ⓘ |
| luminosity | about 75,000 times solar luminosity ⓘ |
| mass | about 11 solar masses ⓘ |
| nameEtymology | from Greek meaning 'rival of Ares' or 'like Mars' ⓘ |
| otherName |
Alpha Scorpii
NERFINISHED
ⓘ
Cor Scorpii NERFINISHED ⓘ Heart of the Scorpion NERFINISHED ⓘ α Scorpii NERFINISHED ⓘ |
| parallax | about 5.9 mas ⓘ |
| properMotionDec | −23.21 mas/yr ⓘ |
| properMotionRA | −10.16 mas/yr ⓘ |
| radialVelocity | about −3 km/s ⓘ |
| radius |
about 3 AU
ⓘ
about 680 solar radii ⓘ |
| rankByBrightnessInNightSky | among the brightest stars visible to the naked eye ⓘ |
| rightAscension | 16h 29m 24s ⓘ |
| spectralType |
B2.5V
ⓘ
M1.5Iab-Ib ⓘ |
| variableType | slow irregular variable ⓘ |
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Commercial Resupply Services
this entity surface form:
Antares star