90377 Sedna
E450958
Solar System object
detached object
minor planet
possible dwarf planet
scattered disc object candidate
sednoid
trans-Neptunian object
90377 Sedna is a distant, large trans-Neptunian object in the outer reaches of the Solar System, notable for its highly elongated orbit and status as one of the most remote known bodies orbiting the Sun.
Statements (53)
| Predicate | Object |
|---|---|
| instanceOf |
Solar System object
ⓘ
detached object ⓘ minor planet ⓘ possible dwarf planet ⓘ scattered disc object candidate ⓘ sednoid ⓘ trans-Neptunian object ⓘ |
| absoluteMagnitude | about 1.6 ⓘ |
| albedo | about 0.32 ⓘ |
| aphelionDistance | about 937 AU ⓘ |
| aphelionRegion | inner Oort cloud candidate region ⓘ |
| argumentOfPerihelion | about 311 degrees ⓘ |
| belongsTo | Solar System NERFINISHED ⓘ |
| discoveredByProgram | Caltech wide-field survey for distant Solar System objects NERFINISHED ⓘ |
| discoverer |
Chad Trujillo
NERFINISHED
ⓘ
David L. Rabinowitz NERFINISHED ⓘ Michael E. Brown NERFINISHED ⓘ |
| discoveryDate | 2003-11-14 ⓘ |
| discoveryMethod | CCD imaging survey ⓘ |
| discoverySite | Palomar Observatory NERFINISHED ⓘ |
| distanceFromSunAtDiscovery | about 90 AU ⓘ |
| eccentricity | about 0.85 ⓘ |
| estimatedDiameter |
about 1000 km
ⓘ
between 900 km and 1100 km ⓘ |
| hasNo | known moons ⓘ |
| inclination | about 11.9 degrees ⓘ |
| influencedTheorizingAbout |
Solar System formation
ⓘ
presence of distant massive perturbers ⓘ stellar encounters in Sun's birth cluster ⓘ |
| isBeyond | Neptune NERFINISHED ⓘ |
| isOneOf | most distant known Solar System objects ⓘ |
| longitudeOfAscendingNode | about 144 degrees ⓘ |
| meanAnomaly | about 358 degrees (at epoch near discovery) ⓘ |
| mpcDesignation | 90377 Sedna NERFINISHED ⓘ |
| namedAfter |
Inuit sea goddess Sedna
NERFINISHED
ⓘ
Sedna NERFINISHED ⓘ |
| notableFor |
extreme distance from the Sun
ⓘ
highly elongated orbit ⓘ possible link to inner Oort cloud ⓘ |
| orbitalCategory | detached extreme trans-Neptunian object ⓘ |
| orbitalPeriod | approximately 11000 years ⓘ |
| orbits | Sun NERFINISHED ⓘ |
| perihelionDistance | about 76 AU ⓘ |
| perihelionLocation | far beyond Kuiper belt ⓘ |
| provisionalDesignation | 2003 VB12 ⓘ |
| rotationPeriod | about 10 hours ⓘ |
| semiMajorAxis | about 506 AU ⓘ |
| spectralType | very red TNO spectrum ⓘ |
| surfaceColor | very red ⓘ |
| surfaceComposition |
likely methane ice
ⓘ
likely nitrogen ice ⓘ likely water ice ⓘ organic tholins ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.