δ Herculis
E925813
δ Herculis is a bright multiple star system in the constellation Hercules, visible to the naked eye and commonly used as a reference point in the northern sky.
Observed surface forms (4)
| Surface form | Occurrences |
|---|---|
| δ Herculis A | 0 |
| δ Herculis B | 0 |
| δ Herculis C | 0 |
| δ Herculis D | 0 |
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
multiple star system
ⓘ
star ⓘ star ⓘ star ⓘ star ⓘ stellar system ⓘ |
| BayerDesignation | δ Herculis NERFINISHED ⓘ |
| belongsToAsterism | Keystone of Hercules NERFINISHED ⓘ |
| constellation | Hercules ⓘ |
| declinationEpochJ2000 | approximately +24° ⓘ |
| distanceFromEarth | approximately 75 light-years ⓘ |
| equatorialHemisphereVisibility | northern sky ⓘ |
| hasApparentMagnitudeV | approximately 3.1 ⓘ |
| hasComponent |
δ Herculis A
NERFINISHED
ⓘ
δ Herculis B NERFINISHED ⓘ δ Herculis C NERFINISHED ⓘ δ Herculis D NERFINISHED ⓘ |
| hasFlamsteedDesignation | 39 Herculis ⓘ |
| hasParallaxMeasurement | true ⓘ |
| hasProperMotion | true ⓘ |
| isBrightStar | true ⓘ |
| isCataloguedIn |
Henry Draper Catalogue
NERFINISHED
ⓘ
Hipparcos Catalogue NERFINISHED ⓘ |
| isNorthernCelestialHemisphereObject | true ⓘ |
| isReferenceStar | true ⓘ |
| isUsedFor |
celestial navigation
ⓘ
sky orientation ⓘ |
| isVisibleToNakedEye | true ⓘ |
| rightAscensionEpochJ2000 | approximately 17h 15m ⓘ |
| spectralTypePrimary | A-type star ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.