Astrophysics (index)about

Neptune

(outer-most solar system planet)

Neptune is the outer-most known planet in the solar system. Characteristics:

Among the solar system planets, it is easily most similar to Uranus, with a slightly larger mass and a slightly smaller radius.

Neptune has 14 moons, of which one, Triton, is substantial. Triton has a retrograde orbit, suggesting it is a captured minor planet.

Pluto and Neptune have a 3:2 orbital resonance.

The only mission to fly near Neptune was Voyager 2 in 1989.

The term Neptune is also used for Neptune-like extra-solar planets, specifically significantly larger than Earth and smaller than Jupiter or Saturn, and typically a gas planet, perhaps with other Neptune-like characteristics.


(planet,solar system)
http://en.wikipedia.org/wiki/Neptune
RedshiftParsecs
/Distance
Lightyears
/Lookback Years
  
~029AU~0lynearestNeptune
~031AU~0lyfurthestNeptune

Referenced by:
astronomical quantities
atmosphere
astronomical unit (AU)
equilibrium temperature (Teq)
ethylene (C2H4)
extra-solar planet
giant planet
ice giant
Kuiper Belt (K Belt)
late heavy bombardment (LHB)
magnetic field
moment of inertia factor
moon
Moon formation
solar mass (MSun)
NGTS
obliquity
orbital resonance
Outer Solar System Origins Survey (OSSOS)
Planet Nine
planet type
Pluto
plutoid
retrograde orbit
ring system
rotation period
shepherd moon
super-Earth
superionic ice
Transiting Exoplanet Survey Satellite (TESS)
Titius-Bode law
trans-Neptunian object (TNO)
Triton
Uranus
vortex
Voyager

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