Laomedeia

{{Infobox planet

| name = Laomedeia

| image = Laomedeia VLT-FORS1 2002-09-03 annotated.gif

| image_scale =

| caption = Laomedeia imaged by the Very Large Telescope's FORS1 imager in September 2002

| alt_names = S/2002 N 3

| discovery_ref =

| discoverer = {{unbulleted list | M.Holman | JJ Kavelaars | T. Grav | W. Fraser | D. Milisavljevic }}

| discovered = August 13, 2002

| pronounced = {{IPAc-en|ˌ|l|eɪ|ə|m|ə|ˈ|d|iː|ə}}

| adjective = Laomedeian"Laomedian" in Otley (1828) Essays on the nature, causes and effects of national antipathies

| mpc_name = Neptune XII

| named_after = Λαομέδεια Lāomedeia

| satellite_of = Neptune

| group = Sao group

| orbit_ref =

| epoch = 2003 Jun. 10.00 TT

| semimajor = 23,613,000 km

| eccentricity = 0.3969

| inclination = 37.874°

| period = 3171.33 days
(8.68 yr)

| mean_diameter = 42 km {{small|(for albedo 0.04)}}

| albedo = 0.04 {{small|(assumed)}}

}}

Laomedeia {{IPAc-en|ˌ|l|eɪ|ə|m|ə|ˈ|d|iː|ə}}, 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. 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). It is named after Laomedeia, one of the 50 Nereids.

References

{{reflist

| refs =

{{cite web

| author = JPL

| date = 2011-07-21

| title = Planetary Satellite Discovery Circumstances

| publisher = Jet Propulsion Laboratory

| url = http://ssd.jpl.nasa.gov/?sat_discovery

| access-date = 2011-10-24

}}

{{cite journal

| last = Green

| first = Daniel W. E.

| title = Satellites of Neptune

| date = January 13, 2003

| journal = IAU Circular

| volume = 8047

| url = http://www.cbat.eps.harvard.edu/iauc/08000/08047.html

| access-date = 2011-10-24

}}

{{cite web

| last = Jacobson

| first = R. A.

| date = 2008

| title = NEP078 – JPL satellite ephemeris

| work = Planetary Satellite Mean Orbital Parameters

| url = http://ssd.jpl.nasa.gov/?sat_elem

| access-date = 2009-09-23

}}

{{cite journal| doi = 10.1086/504799| last1 = Sheppard| first1 = Scott S.| author-link1 = Scott S. Sheppard| last2 = Jewitt| first2 = David C.| author-link2 = David C. Jewitt| last3 = Kleyna| first3 = Jan| author-link3 = Jan Kleyna| year = 2006| title = A Survey for "Normal" Irregular Satellites around Neptune: Limits to Completeness| journal = The Astronomical Journal| volume = 132| issue = 1| pages = 171–176| bibcode = 2006AJ....132..171S| arxiv = astro-ph/0604552| s2cid = 154011}}

{{cite journal| doi = 10.1038/nature02832| last1 = Holman| first1 = M. J.| author-link = Matthew J. Holman| last2 = Kavelaars| first2 = J. J.| author-link2 = John J. Kavelaars| last3 = Grav| first3 = T.| display-authors = 3| year = 2004| last4 = Gladman| first4 = B. J.| author-link4 = Brett J. Gladman| last5 = Fraser| first5 = W. C.| last6 = Milisavljevic| first6 = D.| last7 = Nicholson| first7 = P. D.| last8 = Burns| first8 = J. A.| last9 = Carruba| first9 = V.| title = Discovery of five irregular moons of Neptune| journal = Nature| volume = 430| issue = 7002| pages = 865–867| pmid = 15318214| bibcode = 2004Natur.430..865H| s2cid = 4412380| url = https://www.cfa.harvard.edu/~mholman/nature_final.pdf| access-date = 24 October 2011}}

}}

External links

[https://web.archive.org/web/20081221181025/http://www.dtm.ciw.edu/sheppard/satellites/nepsatdata.html Neptune's Known Satellites], by Scott S. Sheppard
[https://web.archive.org/web/20060901072706/http://www.ifa.hawaii.edu/~jewitt/irregulars.html David Jewitt pages]
[http://www.minorplanetcenter.org/iau/NatSats/NaturalSatellites.html MPC: Natural Satellites Ephemeris Service]
[http://ssd.jpl.nasa.gov/?sat_elem Mean orbital parameters], NASA

Category:Sao group

Category:Moons of Neptune

Category:Irregular satellites

Category:Discoveries by Tommy Grav

20020813

Category:Moons with a prograde orbit