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Vanth (moon)

Vanth (formal designation (90482) Orcus I) is the only known moon of the large trans-Neptunian dwarf planet Orcus. It was discovered by Michael Brown and Terry-Ann Suer using images taken by the Hubble Space Telescope on 13 November 2005. The moon has a diameter of 443 km (275 mi), making it about half the size of Orcus and the third-largest moon of a…

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Absolute magnitude (H)
4.88±0.05: 2702
Adjectives
Vanthian
Albedo
0.08±0.02
Apparent magnitude
21.8
Argument of periapsis
274.51°[b]
Designation
(90482) Orcus I: 350

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Overview

Discovery

Name

Observability

Orbit

Origin

Physical characteristics

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Vanth (moon)

Nodes91
Edges90
Triples26
Avg. degree1.98
Density0.021978
Components1

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Vanth (moon)

Top relations

Discovered by · 2
Vanth (moon) → Michael E. Brown, Terry-Ann Suer
Absolute magnitude (H) · 1
Vanth (moon) → 4.88±0.05: 2702
Adjectives · 1
Vanth (moon) → Vanthian
Albedo · 1
Vanth (moon) → 0.08±0.02
Apparent magnitude · 1
Vanth (moon) → 21.8
Argument of periapsis · 1
Vanth (moon) → 274.51°[b]
Designation · 1
Vanth (moon) → (90482) Orcus I: 350
Discovery date · 1
Vanth (moon) → 13 November 2005
Eccentricity · 1
Vanth (moon) → 0.00091±0.00053
Inclination · 1
Vanth (moon) → 105.03°±0.18° (to celestial equator) 90.54°±0.17° (to ecliptic)[a]

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Important terminology

vanth orcus vanth's system orbit large km occultation surface barycenter charon mi brown orbital diameter density around kuiper belt light

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Vanth (moon)Absolute magnitude (H)4.88±0.05: 27021.00infobox
Vanth (moon)AdjectivesVanthian1.00infobox
Vanth (moon)Albedo0.08±0.021.00infobox
Vanth (moon)Apparent magnitude21.81.00infobox
Vanth (moon)Argument of periapsis274.51°[b]1.00infobox
Vanth (moon)Designation(90482) Orcus I: 3501.00infobox
Vanth (moon)Discovered byMichael E. Brown1.00infobox
Vanth (moon)Discovered byTerry-Ann Suer1.00infobox
Vanth (moon)Discovery date13 November 20051.00infobox
Vanth (moon)Eccentricity0.00091±0.000531.00infobox
Vanth (moon)Inclination105.03°±0.18° (to celestial equator) 90.54°±0.17° (to ecliptic)[a]1.00infobox
Vanth (moon)Longitude of ascending node53.49°±0.33°1.00infobox
Vanth (moon)Mass(8.7±0.8)×1019 kg: 41.00infobox
Vanth (moon)Mean density≈1.9±0.3 g/cm3 (occultation)[c] 1.5+1.0 −0.5 g/cm3 (thermal): 41.00infobox
Vanth (moon)Mean diameter442.5±10.2 km (occultation): 663 475±75 km (thermal): 1 : 21.00infobox
Vanth (moon)Named afterVanth1.00infobox
Vanth (moon)Orbital period (sidereal)9.539154±0.000020 d1.00infobox
Vanth (moon)Pronunciation/ˈvænθ/1.00infobox
Vanth (moon)Satellite ofOrcus1.00infobox
Vanth (moon)Semi-major axis8999.8±9.1 km1.00infobox
Vanth (moon)Spectral typemoderately red: 2702 V–I = 1.03±0.05: 27021.00infobox
Vanth (moon)Synodic rotation periodsynchronous: 61.00infobox
Vanth (moon)Temperature<44 K: 6631.00infobox

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