28978 Ixion
E450959
Kuiper Belt object
cubewano-plutino transition object
minor planet
plutino
possible dwarf planet
resonant trans-Neptunian object
trans-Neptunian object
28978 Ixion is a large trans-Neptunian object in the Kuiper Belt classified as a plutino, known for its similar orbital resonance with Neptune as Pluto.
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Kuiper Belt object
ⓘ
cubewano-plutino transition object ⓘ minor planet ⓘ plutino ⓘ possible dwarf planet ⓘ resonant trans-Neptunian object ⓘ trans-Neptunian object ⓘ |
| absoluteMagnitude | approximately 3.2 ⓘ |
| albedo | approximately 0.15 ⓘ |
| aphelionDistance | approximately 49 AU ⓘ |
| argumentOfPerihelion | approximately 296 degrees ⓘ |
| belongsToDynamicalClass | plutinos ⓘ |
| belongsToPopulation | classical and resonant Kuiper belt population boundary ⓘ |
| belongsToSolarSystem | outer Solar System ⓘ |
| classificationStatus | not officially classified as dwarf planet by IAU ⓘ |
| discoveredAt | Cerro Tololo Inter-American Observatory NERFINISHED ⓘ |
| discoveredBy |
Deep Ecliptic Survey
NERFINISHED
ⓘ
Marc W. Buie NERFINISHED ⓘ Robert L. Millis NERFINISHED ⓘ |
| discoveredOn | 2001-05-22 ⓘ |
| discoverySurvey | Deep Ecliptic Survey NERFINISHED ⓘ |
| estimatedDiameter |
approximately 650 km
ⓘ
between 600 km and 800 km ⓘ |
| hasColorIndexB-R | approximately 1.6 ⓘ |
| hasColorIndexV-R | approximately 0.6 ⓘ |
| hasMinorPlanetNumber | 28978 ⓘ |
| hasNoKnownMoons | true ⓘ |
| hasObservationArc | greater than 20 years ⓘ |
| hasProvisionalDesignation | 2001 KX76 ⓘ |
| isOneOfLargest | plutinos ⓘ |
| locatedInEpoch | J2000 ecliptic ⓘ |
| longitudeOfAscendingNode | approximately 71 degrees ⓘ |
| meanAnomaly | approximately 310 degrees (epoch-dependent) ⓘ |
| meanDistanceFromSun | approximately 39.6 AU ⓘ |
| namedAfter |
Ixion
NERFINISHED
ⓘ
figure from Greek mythology ⓘ |
| orbitalEccentricity | approximately 0.24 ⓘ |
| orbitalInclination | approximately 19.7 degrees ⓘ |
| orbitalPeriod | approximately 248 years ⓘ |
| orbitalResonanceType | 2:3 resonance ⓘ |
| orbitalResonanceWith | Neptune NERFINISHED ⓘ |
| orbitsIn | Kuiper belt NERFINISHED ⓘ |
| perihelionDistance | approximately 30 AU ⓘ |
| rotationPeriod | approximately 12.4 hours ⓘ |
| semiMajorAxis | approximately 39.6 AU ⓘ |
| similarOrbitalResonanceTo | Pluto NERFINISHED ⓘ |
| spectralType | moderately red TNO ⓘ |
| surfaceComposition | likely mixture of water ice and complex organics ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.