S/2002 N 1

From Wikipedia, the free encyclopedia

S/2002 N 1
Discovery [1]
Discovered by M.Holman
JJ Kavelaars
T.Grav, W.Fraser
D.Milisavljevic
Discovered in 2002
Mean Orbital elements [2]
Epoch June 10, 2003
Semi-major axis 15.728 Gm
Eccentricity 0.5711
Inclination 134° *
Orbital period 1879.7 days
(5.15 yr)
Physical characteristics
Mean diameter 62 km [2] **
Rotation period  ?
Albedo 0.04 assumed [2]
Color neutral (grey)
B-V=0.73 R-V=0.35[3]
Spectral type  ?
*to the ecliptic **based on the albedo

S/2002 N 1 is a retrograde irregular satellite of Neptune. It was discovered by Matthew J. Holman et al. in 2002.[4]

Irregular satellites of Neptune.
Enlarge
Irregular satellites of Neptune.

S/2002 N 1 follows a highly inclined and highly eccentric orbit illustrated on the diagram in relation to other irregular satellites of Neptune. The satellites above the horizontal axis are prograde, the satellites beneath it are retrograde. The yellow segments extend from the pericentre to the apocentre, showing the eccentricity.

S/2002 N 1 is about 62 kilometers in diameter (assuming an albedo of 0.04).[2] and appears neutral (grey) in the visible light. Given the very similar colour of the satellite to that of Nereid together with a high probability (41% [4]) of their collision in the lifespan of the Solar system, it has been suggested that the satellite could be a fragment of Nereid.[3]


[edit] See also

[edit] External links

[edit] References

  1. ^ Discovery Circumstances from JPL
  2. ^ a b c d S. Sheppard, D.Jewitt and J.Kleyna A Survey for "Normal" Irregular Satellites Around Neptune: Limits to Completeness, The Astronomical Journal, 132 (2006), pp. 171–176. Preprint.
  3. ^ a b T.Grav, M.Holman and W.Fraser Photometry of Irregular Satellites of Uranus and Neptune, The Astrophysical Journal, 613 (2004), pp.L77–L80. Preprint
  4. ^ a b M.Holman, JJ Kavelaars, B.Gladman, T.Grav, W.Fraser, D.Milisavljevic, P.Nicholson, J.Burns, V.Carruba, J-M.Petit, P.Rousselot, O.Mousis, B.Marsden, R.Jacobson Discovery of five irregular moons of Neptune, Nature, 430 (2004), pp. 865-867. Final preprint(pdf)


v • d • e
Moons of Neptune
Naiad · Thalassa · Despina · Galatea · Larissa · Proteus · Triton · Nereid · S/2002 N 1 · S/2002 N 2 · S/2002 N 3 · Psamathe · S/2002 N 4
Neptune Trojans • Rings of Neptune
Retrieved from "http://en.wikipedia.org../../../s/2F/2/S_2002_N_1_1849.html"