Astronomy:Laomedeia

From HandWiki
Short description: Moon of Neptune
Laomedeia
Laomedeia VLT-FORS1 2002-09-03 annotated.gif
Laomedeia imaged by the Very Large Telescope's FORS1 imager in September 2002
Discovery[1][2]
Discovered by
Discovery dateAugust 13, 2002
Designations
Designation
Neptune XII
Pronunciation/ˌleɪəməˈdiːə/
Named afterΛαομέδεια Lāomedeia
S/2002 N 3
AdjectivesLaomedeian[3]
Orbital characteristics[4]
Epoch 2003 Jun. 10.00 TT
23,613,000 km
Eccentricity0.3969
Orbital period3171.33 days
(8.68 yr)
Inclination37.874°
Physical characteristics
Mean diameter42 km (for albedo 0.04)[5]
Albedo0.04 (assumed)[5]


Laomedeia /ˌleɪəməˈdiːə/, also known as Neptune XII, is a prograde irregular satellite of Neptune. It was discovered by Matthew J. Holman, et al. on August 13, 2002.[6] Before the announcement of its name on February 3, 2007 (IAUC 8802), it was known as S/2002 N 3.

It orbits Neptune at a distance of about 23,571,000 km and is about 42 kilometers in diameter (assuming albedo of 0.04).[5] It is named after Laomedeia, one of the 50 Nereids.

References

  1. ↑ JPL (2011-07-21). "Planetary Satellite Discovery Circumstances". Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/?sat_discovery. 
  2. ↑ Green, Daniel W. E. (January 13, 2003). "Satellites of Neptune". IAU Circular 8047. http://www.cbat.eps.harvard.edu/iauc/08000/08047.html. Retrieved 2011-10-24. 
  3. ↑ "Laomedian" in Otley (1828) Essays on the nature, causes and effects of national antipathies
  4. ↑ Jacobson, R. A. (2008). "NEP078 – JPL satellite ephemeris". Planetary Satellite Mean Orbital Parameters. http://ssd.jpl.nasa.gov/?sat_elem. 
  5. ↑ 5.0 5.1 5.2 Sheppard, Scott S.; Jewitt, David C.; Kleyna, Jan (2006). "A Survey for "Normal" Irregular Satellites around Neptune: Limits to Completeness". The Astronomical Journal 132 (1): 171–176. doi:10.1086/504799. Bibcode: 2006AJ....132..171S. 
  6. ↑ Holman, M. J.; Kavelaars, J. J.; Grav, T. et al. (2004). "Discovery of five irregular moons of Neptune". Nature 430 (7002): 865–867. doi:10.1038/nature02832. PMID 15318214. Bibcode: 2004Natur.430..865H. https://www.cfa.harvard.edu/~mholman/nature_final.pdf. Retrieved 24 October 2011. 

External links



Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:Laomedeia&oldid=3340490"