Larissa (moon)

Larissa
Larissa from Voyager 2
Discovery
Discovered byHarold J. Reitsema, William B. Hubbard, Larry A. Lebofsky, and David J. Tholen[1]
Discovery dateMay 24, 1981
Designations
Designation
Neptune VII
Pronunciation/ləˈrɪsə/[2]
Named after
Λάρισσα Lārissa
S/1989 N 2
S/1981 N 1
AdjectivesLarissean,[3] Larissan,[4] Larissian[5] /ləˈrɪs(i)ən/
Orbital characteristics[6][7]
Epoch 18 August 1989
73 548.26 km
Eccentricity0.001393 ± 0.00008
0.55465332 ± 0.00000001 d
Inclination
  • 0.251 ± 0.009° (to Neptune equator)
  • 0.205° (to local Laplace plane)
Satellite ofNeptune
Physical characteristics
Dimensions(216±6) × (204±16) × (168±4) km[8]
97±3 km[8]
118236.98 km2[9]
Volume~3.64×106 km3[a]
Mass~(0.19–5.7)×1018 kg[b]
Mean density
~0.052–1.57 g/cm3[c]
~0.001–0.054 m/s2[d]
~0.015–0.095 km/s[e]
synchronous
zero
Albedo0.09[8][13]
Temperature~51 K mean (estimate)
21.5[13]

Larissa, also known as Neptune VII, is the fifth-closest inner satellite of Neptune. It is named after Larissa, a lover of Poseidon (the Greek equivalent of the Roman god Neptune).

Larissa is also the eponymous nymph of the city in Thessaly, Greece.

  1. ^ "Larissa In Depth". solarsystem.nasa.gov/. Retrieved September 3, 2020.
  2. ^ "Larissa". Merriam-Webster.com Dictionary. Merriam-Webster.
  3. ^ Boccaccio (1974). The book of Theseus.
  4. ^ Livy (1850 trans.) The history of Rome, v. 3
  5. ^ Bell (1790). Bell's New pantheon.
  6. ^ Cite error: The named reference Jacobson2004 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Showalter2019 was invoked but never defined (see the help page).
  8. ^ a b c d Cite error: The named reference Karkoschka2003 was invoked but never defined (see the help page).
  9. ^ "Larissa In Depth". solarsystem.nasa.gov. Archived from the original on January 27, 2022. Retrieved September 3, 2020.
  10. ^ Cite error: The named reference Stooke1994 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference ThomasVeverka1991 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference ZhangHamilton2007 was invoked but never defined (see the help page).
  13. ^ a b Cite error: The named reference jplssd was invoked but never defined (see the help page).


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