Beta Tucanae
E495196
Beta Tucanae is a multiple star system in the southern constellation Tucana, visible to the naked eye and notable for its bright, closely spaced stellar components.
Observed surface forms (2)
| Surface form | Occurrences |
|---|---|
| Beta Tucanae A | 0 |
| Beta Tucanae B | 0 |
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
main-sequence star
ⓘ
multiple star system ⓘ |
| belongsTo | Milky Way galaxy NERFINISHED ⓘ |
| hasAge | a few hundred million years ⓘ |
| hasApparentMagnitude |
about 4.36
ⓘ
about 4.54 ⓘ approximately 4.37 ⓘ |
| hasBayerDesignation | β Tucanae NERFINISHED ⓘ |
| hasColorIndexBminusV | approximately −0.05 ⓘ |
| hasComponent |
Beta Tucanae A
NERFINISHED
ⓘ
Beta Tucanae B NERFINISHED ⓘ Beta Tucanae C NERFINISHED ⓘ Beta Tucanae D NERFINISHED ⓘ Beta Tucanae E NERFINISHED ⓘ Beta Tucanae F NERFINISHED ⓘ |
| hasComponentSeparation | about 27 arcseconds between main visual pair ⓘ |
| hasDeclination | −64° 17′ 38″ ⓘ |
| hasDistanceFromEarth |
approximately 140 light-years
ⓘ
approximately 43 parsecs ⓘ |
| hasEffectiveTemperature | about 10500 K (dominant components) ⓘ |
| hasFlamsteedDesignation |
Beta² Tucanae
NERFINISHED
ⓘ
Beta¹ Tucanae NERFINISHED ⓘ |
| hasGalacticPopulation | thin disk ⓘ |
| hasLuminosityClass | V ⓘ |
| hasMass | about 2.5 solar masses for each main component ⓘ |
| hasObservationMethod |
astrometric measurement
ⓘ
spectroscopic analysis ⓘ visual binary observation ⓘ |
| hasParallax | about 23 milliarcseconds ⓘ |
| hasProperMotion | significant in right ascension and declination ⓘ |
| hasRadialVelocity | approximately +7 km/s ⓘ |
| hasRightAscension | 23h 39m 20s ⓘ |
| hasSpectralType |
B9V
ⓘ
B9V (combined light dominated) ⓘ |
| isCatalogedIn |
Bright Star Catalogue
NERFINISHED
ⓘ
Henry Draper Catalogue NERFINISHED ⓘ Hipparcos Catalogue NERFINISHED ⓘ |
| isInHemisphere | southern celestial hemisphere ⓘ |
| isNotableFor | bright closely spaced stellar components ⓘ |
| isVisibleTo | naked eye ⓘ |
| locatedInConstellation | Tucana NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Tucana