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486958 Arrokoth

486958 Arrokoth (provisional designation 2014 MU69; formerly nicknamed Ultima Thule) is a small, icy Kuiper belt object orbiting the Sun beyond Neptune and Pluto. It became the farthest object in the Solar System visited by a spacecraft when the NASA space probe New Horizons flew past it on 1 January 2019. Arrokoth was discovered on 26 June 2014 by…

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(approx)
29 K
Absolute magnitude (H)
10.4 (V-band) · 11.1
Alternative designations
(486958) 2014 MU69 · Ultima Thule (unofficial) · 1110113Y · PT1
Aphelion
45.903 AU[a]
Apparent magnitude
26.6
Argument of perihelion
183.861°

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Overview

Name

Shape

Geology

Orbit and classification

Rotation and temperature

Mass and density

Formation

Observation

Exploration

Gallery

  • UT Universal Time

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Map overview Semantic statistics

486958 Arrokoth

Nodes179
Edges178
Triples82
Avg. degree1.99
Density0.011173
Components1

How this topic connects Entity context

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486958 Arrokoth

Top relations

related to External links · 19
486958 Arrokoth → Arrokoth, Arrokoth Flyby486958 Arrokoth, AstDyS-2, Asteroids, Discovery, Dynamic SiteEphemeris, Ephemeris, JPL Small-Body DatabaseClose, LORRI Images, Most Distant Object Explored, MU69, NASA Solar System ExplorationAbout, Observation, Observational, Orbit, Orbital, Physical, Proper, Up Close
Alternative designations · 4
486958 Arrokoth → (486958) 2014 MU69, 1110113Y, PT1, Ultima Thule (unofficial)
Dimensions · 3
486958 Arrokoth → Overall best fit: 34.546 × 19.838 × 13.822 km, Weeyo: 15.041 × 14.378 × 13.625 km, Wenu: 20.139 × 19.838 × 13.726 km
Mean diameter · 3
486958 Arrokoth → Overall volume equivalent: 19.896 km, Weeyo: 13.845 km, Wenu: 17.349 km
Minor planet category · 3
486958 Arrokoth → classical (cold), distant, TNO
Spectral type · 3
486958 Arrokoth → G−I = 1.42±0.14, G−R = 0.95±0.14, V−I = 1.35
Absolute magnitude (H) · 2
486958 Arrokoth → 10.4 (V-band), 11.1
Discovered by · 2
486958 Arrokoth → Marc W. Buie, New Horizons KBO Search
Geometric albedo · 2
486958 Arrokoth → 0.062±0.015 (Bond), 0.21+0.05 −0.04 (geometric)
Mean density · 2
486958 Arrokoth → 1-sigma range: 0.155–0.600 g/cm3, ~0.235 g/cm3 (nominal)

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Important terminology

arrokoth new horizons arrokoth's surface spacecraft objects lobes kuiper belt sun hubble km mi two orbit around object team weeyo

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
486958 Arrokoth(approx)29 K1.00infobox
486958 ArrokothAbsolute magnitude (H)10.4 (V-band)1.00infobox
486958 ArrokothAbsolute magnitude (H)11.11.00infobox
486958 ArrokothAlternative designations(486958) 2014 MU691.00infobox
486958 ArrokothAlternative designationsUltima Thule (unofficial)1.00infobox
486958 ArrokothAlternative designations1110113Y1.00infobox
486958 ArrokothAlternative designationsPT11.00infobox
486958 ArrokothAphelion45.903 AU[a]1.00infobox
486958 ArrokothApparent magnitude26.61.00infobox
486958 ArrokothArgument of perihelion183.861°1.00infobox
486958 ArrokothAxial tilt100.39° wrt orbit1.00infobox
486958 ArrokothDimensionsOverall best fit: 34.546 × 19.838 × 13.822 km1.00infobox
486958 ArrokothDimensionsWenu: 20.139 × 19.838 × 13.726 km1.00infobox
486958 ArrokothDimensionsWeeyo: 15.041 × 14.378 × 13.625 km1.00infobox
486958 ArrokothDiscovered byMarc W. Buie1.00infobox
486958 ArrokothDiscovered byNew Horizons KBO Search1.00infobox
486958 ArrokothDiscovery date26 June 20141.00infobox
486958 ArrokothDiscovery siteHubble Space Telescope1.00infobox
486958 ArrokothEccentricity0.03781.00infobox
486958 ArrokothEquatorial surface gravity~0.0001 g (~0.001 m/s2): 28:451.00infobox
486958 ArrokothGeometric albedo0.21+0.05 −0.04 (geometric)1.00infobox
486958 ArrokothGeometric albedo0.062±0.015 (Bond)1.00infobox
486958 ArrokothInclination2.450°1.00infobox
486958 ArrokothLongitude of ascending node159.045°1.00infobox
486958 ArrokothMass~7.485×1014 kg (nominal density)1.00infobox
486958 ArrokothMean anomaly315.242°1.00infobox
486958 ArrokothMean density~0.235 g/cm3 (nominal)1.00infobox
486958 ArrokothMean density1-sigma range: 0.155–0.600 g/cm31.00infobox
486958 ArrokothMean diameterOverall volume equivalent: 19.896 km1.00infobox
486958 ArrokothMean diameterWenu: 17.349 km1.00infobox

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