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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| asteroid 6489 Golevka canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11317320 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: asteroid 6489 Golevka Context triple: [Evpatoria planetary radar, observes, asteroid 6489 Golevka]
-
A.
asteroid 944 Hidalgo
Asteroid 944 Hidalgo is a large, eccentric, comet-like minor planet that orbits between the inner and outer solar system, making it one of the first known centaur objects.
-
B.
asteroid 1859 Kovalevskaya
Asteroid 1859 Kovalevskaya is a main-belt asteroid named in honor of pioneering Russian mathematician Sofia Kovalevskaya.
-
C.
asteroid Šteins
Asteroid Šteins is a small, diamond-shaped main-belt asteroid that was closely studied during a 2008 flyby by ESA’s Rosetta spacecraft.
-
D.
asteroid 1604 Tombaugh
Asteroid 1604 Tombaugh is a main-belt asteroid named in honor of American astronomer Clyde Tombaugh, the discoverer of Pluto.
-
E.
asteroid 1946 Walraven
Asteroid 1946 Walraven is a minor planet in our solar system named in honor of Dutch astronomer Theodorus Walraven.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: asteroid 6489 Golevka Target entity description: 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.
-
A.
asteroid 944 Hidalgo
Asteroid 944 Hidalgo is a large, eccentric, comet-like minor planet that orbits between the inner and outer solar system, making it one of the first known centaur objects.
-
B.
asteroid 1859 Kovalevskaya
Asteroid 1859 Kovalevskaya is a main-belt asteroid named in honor of pioneering Russian mathematician Sofia Kovalevskaya.
-
C.
asteroid Šteins
Asteroid Šteins is a small, diamond-shaped main-belt asteroid that was closely studied during a 2008 flyby by ESA’s Rosetta spacecraft.
-
D.
asteroid 1604 Tombaugh
Asteroid 1604 Tombaugh is a main-belt asteroid named in honor of American astronomer Clyde Tombaugh, the discoverer of Pluto.
-
E.
asteroid 1946 Walraven
Asteroid 1946 Walraven is a minor planet in our solar system named in honor of Dutch astronomer Theodorus Walraven.
- F. None of above. chosen
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 ⓘ |
| discoveredBy |
Eleanor F. Helin
ⓘ
Kenneth J. Lawrence ⓘ |
| discoveryDate | 1991-05-10 ⓘ |
| hasAlbedo | relatively high for a near-Earth asteroid ⓘ |
| hasAlternativeName | 1991 JX ⓘ |
| hasDynamicalClass | Apollo group of near-Earth asteroids ⓘ |
| hasLightcurve | complex lightcurve due to irregular shape and tumbling ⓘ |
| hasMeasuredEffect | Yarkovsky effect ⓘ |
| hasNameOrigin | GOLEVKA is a portmanteau of GOlevka from GOlev, LE from LEvy, and KA from KArdashov (radar astronomers’ names initials) ⓘ |
| 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 ⓘ |
| minimumOrbitIntersectionDistanceWithEarth | about 0.025 AU ⓘ |
| namedAfter |
Alexander Golev
NERFINISHED
ⓘ
Eugene K. Zelenyi ⓘ Stephen Ostro ⓘ |
| 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 ⓘ |
| perihelionDistance | 0.99 AU ⓘ |
| provisionalDesignation | 1991 JX ⓘ |
| radarObservedBy |
Arecibo Observatory
ⓘ
Goldstone Deep Space Communications Complex ⓘ |
| 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 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: asteroid 6489 Golevka Description of subject: 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.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.