Nix

Moon of 134340 PlutoNamed minor body or small moon

Tumbles unpredictably around the Pluto and Charon pair.

Where it is right now

Nix is in Capricornus, 34.6 AU away.

Computed for 2 August 2026, 17:00 UTC, and recomputed at least hourly. This page is cached, so treat the line above as accurate to the hour rather than to the second. The map shows the live position.

Position from a Kepler propagation of the published elements below, accurate to about an arcminute.

Facts

Every line carries the source it came from.

Mean radius: 18 kmSource: NASA/JPL Planetary Satellite Physical Parameters
Orbits: Pluto, 49,300 km out on averageSource: NASA/JPL Planetary Satellite Mean Elements
Orbital period: 24.9 daysSource: NASA/JPL Planetary Satellite Mean Elements
Orbit shape: eccentricity 0.0150, inclined 0.00 degrees to Pluto's equatorSource: NASA/JPL Planetary Satellite Mean Elements
Discovered: 2005 by H.A. Weaver, S.A. Stern, M.J. Mutchler, A.J. Steffl, M.W. Buie, W.J. Merline, J.R. Spencer, E.F. Young, L.A. YoungSource: NASA/JPL Planetary Satellite Discovery Circumstances

Physical size

Mean radius: 18.0 km
Diameter: 36 km across

Orbit

Elements are relative to 134340 Pluto.

Average distance from 134340 Pluto: 49,300 km
Closest and furthest: 48,561 km to 50,039 km
Eccentricity: 0.0150, almost circular
Inclination to 134340 Pluto's reference plane: 112.82 degrees
Orbital period: 24.9 days
Longitude of ascending node: 227.35 degrees
Argument of periapsis: 48.51 degrees
Mean anomaly at J2000.0: 338.20 degrees

Family

Orbits 134340 Pluto.

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Claim Nix

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Catalog id nix. 3,172 objects on the map, of which 171 are hand-authored with sourced facts.

Nix