Alpha Monocerotis
E558281
Alpha Monocerotis is a relatively bright giant star located in the constellation Monoceros, visible to the naked eye under good conditions.
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | star ⓘ |
| absoluteMagnitudeV | −0.39 ⓘ |
| age | about 1 billion years (approximate) ⓘ |
| apparentMagnitudeV | 4.39 ⓘ |
| bayerDesignation | α Monocerotis NERFINISHED ⓘ |
| catalog |
Henry Draper Catalogue
NERFINISHED
ⓘ
Hipparcos NERFINISHED ⓘ Tycho NERFINISHED ⓘ |
| colorIndexB−V | +1.01 ⓘ |
| constellation | Monoceros NERFINISHED ⓘ |
| constellationArea | Monoceros NERFINISHED ⓘ |
| coreFusionType | helium-core burning ⓘ |
| declination | −09° 33′ 04″ ⓘ |
| discovery | known since antiquity as a naked-eye star ⓘ |
| distanceFromEarth |
about 294 light-years
ⓘ
about 90 parsecs ⓘ |
| effectiveTemperature | about 4,800 K ⓘ |
| epoch | J2000.0 ⓘ |
| equatorialCoordinateSystem | ICRS NERFINISHED ⓘ |
| evolutionaryStage | red clump giant ⓘ |
| flamsteedDesignation | 17 Monocerotis NERFINISHED ⓘ |
| galacticLatitude | +0.5° (approximate) ⓘ |
| galacticLongitude | 225.5° (approximate) ⓘ |
| galacticPopulation | thin disk ⓘ |
| hemisphere | celestial equator region ⓘ |
| henryDraperNumber | HD 61935 NERFINISHED ⓘ |
| hipparcosNumber | HIP 37265 NERFINISHED ⓘ |
| HRNumber | HR 2963 NERFINISHED ⓘ |
| luminosity | about 60 times solar luminosity ⓘ |
| mass | about 2.3 solar masses ⓘ |
| metallicity[Fe/H] | approximately solar ⓘ |
| multiplicity | single star (no known companions) ⓘ |
| parallax | 11.09 mas ⓘ |
| parallaxError | 0.18 mas ⓘ |
| properMotionDec | −10.77 mas/yr ⓘ |
| properMotionRA | −34.40 mas/yr ⓘ |
| radialVelocity | +26 km/s ⓘ |
| radius | about 11 solar radii ⓘ |
| rightAscension | 07h 41m 14.8s ⓘ |
| rotation | slow rotator ⓘ |
| SIMBADIdentifier | alf Mon NERFINISHED ⓘ |
| spectralClass | K0III ⓘ |
| surfaceGravityLogg | about 2.7 ⓘ |
| variableStarStatus | not known to be variable ⓘ |
| visibility | visible to the naked eye under good conditions ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.