Neso (moon)

Source: Wikipedia, the free encyclopedia.
Not to be confused with 7066 Nessus.

Neso
arcsec / yr
Physical characteristics
Mean diameter
60 km (for albedo 0.04)[5]
Albedo0.04 (assumed)[5]
Spectral type
V–R = 0.58±0.13[6]
V–I = 1.0±0.4[7]
R–I = 0.7±0.4[7]
25.6±0.3 (V-band)[7]
10.67[3]

Neso

aphelion, which is approximately 70 million km from the Sun
.

Irregular satellites of Neptune

Neso is also the moon with the second-longest orbital period, 26.67 years. It follows a retrograde, highly

prograde, the satellites beneath it are retrograde. The yellow segments extend from the pericentre to the apocentre
, showing the eccentricity.

Neso is affected by the Kozai mechanism.[9]

Neso is about 60 km (37 mi) in diameter based on an assumed albedo of 0.04.

Given the similarity of the orbit's parameters with Psamathe (S/2003 N 1), it was suggested that both irregular satellites could have a common origin in the break-up of a larger moon.[5]

Neso is named after one of the Nereids. Before it was officially named on 3 February 2007 (IAUC 8802), Neso was known by its provisional designation, S/2002 N 4.

See also

References

  1. ^ JPL (21 July 2011). "Planetary Satellite Discovery Circumstances". Jet Propulsion Laboratory. Retrieved 24 October 2011.
  2. ^ a b Green, Daniel W. E. (1 October 2003). "S/2001 U 2 and S/2002 N 4". IAU Circular. 8213. Retrieved 24 October 2011.
  3. ^ a b "Natural Satellites Ephemeris Service". Minor Planet Center. Retrieved 14 June 2023. Selection of Objects → "All Neptunian outer irregular satellites" → Check "I require Orbital Elements" → Get Information
  4. ^ Jacobson, R. A. (2008). "NEP078 – JPL satellite ephemeris". Planetary Satellite Mean Orbital Parameters. Retrieved 23 September 2009.
  5. ^ a b c
    S2CID 154011
    .
  6. doi:10.3847/1538-3881/aab49b
    . 184.
  7. ^
    doi:10.3847/2515-5172/aab7fc
    . 42.
  8. ^
    S2CID 4412380
    . Retrieved 24 October 2011.
  9. ISSN 0004-6256
    .

External links

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