asteroid 6489 Golevka
E918824
Asteroid 6489 Golevka is a near-Earth asteroid notable for being one of the first objects whose trajectory was precisely measured using radar to detect the subtle Yarkovsky effect on its orbit.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| 6489 Golevka | 0 |
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Apollo asteroid
ⓘ
minor planet ⓘ near-Earth asteroid ⓘ radar-observed asteroid ⓘ |
| absoluteMagnitude | 19.2 ⓘ |
| aphelionDistance | 4.05 AU ⓘ |
| belongsToGroup | Earth-crossing asteroids ⓘ |
| belongsToPopulation | near-Earth object population ⓘ |
| catalogueNumber | 6489 ⓘ |
| diameter | 0.53 km ⓘ |
| discoveredAt | Palomar Observatory NERFINISHED ⓘ |
| discoveredBy |
Eleanor F. Helin
NERFINISHED
ⓘ
Kenneth J. Lawrence NERFINISHED ⓘ |
| discoveryDate | 1991-05-10 ⓘ |
| hasAlbedo | relatively high for a near-Earth asteroid ⓘ |
| hasAlternativeName | 1991 JX NERFINISHED ⓘ |
| hasDynamicalClass | Apollo group of near-Earth asteroids ⓘ |
| hasLightcurve | complex lightcurve due to irregular shape and tumbling ⓘ |
| hasMeasuredEffect | Yarkovsky effect NERFINISHED ⓘ |
| hasNameOrigin | GOLEVKA is a portmanteau of GOlevka from GOlev, LE from LEvy, and KA from KArdashov (radar astronomers’ names initials) NERFINISHED ⓘ |
| hasObservationTechnique |
optical photometry
ⓘ
radar astronomy ⓘ |
| hasPhysicalProperty | non-principal axis rotation (tumbling) ⓘ |
| hasRadarModel | three-dimensional shape model derived from radar data ⓘ |
| hasSurfaceProperty | rocky composition ⓘ |
| isInCatalogue | Minor Planet Center database NERFINISHED ⓘ |
| minimumOrbitIntersectionDistanceWithEarth | about 0.025 AU ⓘ |
| namedAfter |
Alexander Golev
NERFINISHED
ⓘ
Eugene K. Zelenyi NERFINISHED ⓘ Stephen Ostro NERFINISHED ⓘ |
| notableFor |
high-precision radar ranging measurements
ⓘ
one of the first asteroids with a precisely measured Yarkovsky effect on its orbit ⓘ |
| orbitalEccentricity | 0.51 ⓘ |
| orbitalInclination | 2.3 degrees ⓘ |
| orbitalPeriod | 3.99 years ⓘ |
| orbits | Sun NERFINISHED ⓘ |
| perihelionDistance | 0.99 AU ⓘ |
| provisionalDesignation | 1991 JX ⓘ |
| radarObservedBy |
Arecibo Observatory
NERFINISHED
ⓘ
Goldstone Deep Space Communications Complex NERFINISHED ⓘ |
| riskToEarth | not currently classified as a potentially hazardous asteroid ⓘ |
| rotationPeriod | about 6 hours ⓘ |
| semiMajorAxis | 2.52 AU ⓘ |
| shape | highly irregular ⓘ |
| spectralType | Q-type asteroid ⓘ |
| YarkovskyEffectDetectedBy | radar ranging ⓘ |
| YarkovskyEffectSignificance | provided direct evidence of thermal forces altering asteroid orbits ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.