S/2003 J 2

Template:Short description {{#invoke:infobox|infoboxTemplate | class = vcard | titleclass = fn org | title = S/2003 J 2 | image = {{#invoke:InfoboxImage|InfoboxImage|image=2003 J 2 Gladman CFHT annotated.gif|upright={{#if:||1.1}}|alt=}} | caption = S/2003 J 2 imaged by the Canada-France-Hawaii Telescope during follow-up observations in February 2003 | headerstyle = {{#if:|background-color:|background-color:#E0CCFF}} | labelstyle = max-width:{{#if:||11em}}; | autoheaders = y

| header1 = Discovery <ref name="MPEC-2003-E11"/>

| header10 = {{#if:|Designations|Designations}}

| header20 = Orbital characteristics{{#ifeq:|yes| (barycentric)}} <ref name="MPEC-2021-B134"/>

| data21 = | data22 = {{#if:17 December 2020 (JD 2459200.5) |Epoch 17 December 2020 (JD 2459200.5)}} | data23 = {{#if: | Uncertainty parameter {{{uncertainty}}}}} | label24 = Observation arc | data24 = 16.42 yr (5,996 d) | label25 = Earliest precovery date | data25 = 11 December 2001 | label26 = {{#switch:{{{apsis}}} |apsis|gee|barion|center|centre|(apsis)=Apo{{{apsis}}} |Ap{{#if:|{{{apsis}}}|helion}}}} | data26 = | label27 = Peri{{#if:|{{{apsis}}}|helion}} | data27 = | label28 = Peri{{#if:|{{{apsis}}}|apsis}} | data28 = | label29 = {{#switch:{{{apsis}}} |helion|astron=Ap{{{apsis}}} |Apo{{#if:|{{{apsis}}}|apsis}}}} | data29 = | label30 = Periastron | data30 = | label31 = Apoastron | data31 = | label32 = Template:Longitem | data32 = Template:Cvt | label33 = Template:Longitem | data33 = | label34 = Eccentricity | data34 = 0.2776569 | label35 = Template:Longitem | data35 = –1.65 yr (–602.02 d) | label36 = Template:Longitem | data36 = | label37 = Template:Longitem | data37 = | label38 = Template:Longitem | data38 = 114.43587° | label39 = Template:Longitem | data39 = Template:Deg2DMS / day | label40 = Inclination | data40 = 149.20392° Template:Small | label41 = Template:Longitem | data41 = | label42 = Template:Longitem | data42 = 50.46976° | label43 = Template:Longitem | data43 = | label44 = Template:Longitem | data44 = | label45 = Template:Longitem | data45 = 224.95527° | label46 = Template:Nowrap | data46 = | label47 = Satellite of | data47 = Jupiter | label48 = Group | data48 = Ananke group | label49 = {{#switch: |yes|true=Satellites |Known satellites}} | data49 = | label50 = Star | data50 = | label51 = Earth MOID | data51 = | label52 = Mercury MOID | data52 = | label53 = Venus MOID | data53 = | label54 = Mars MOID | data54 = | label55 = Jupiter MOID | data55 = | label56 = Saturn MOID | data56 = | label57 = Uranus MOID | data57 = | label58 = Neptune MOID | data58 = | label59 = T_Jupiter | data59 =

| header60 = Proper orbital elements

| label61 = Template:Longitem | data61 = {{#if: |{{{p_semimajor}}} AU}} | label62 = Template:Longitem | data62 = | label63 = Template:Longitem | data63 = | label64 = Template:Longitem | data64 = {{#if: |{{{p_mean_motion}}} deg Template:\yr}} | label65 = Template:Longitem | data65 = {{#if:|{{#expr:360/1 round 5}} yr
({{#expr:365.25*360/1 round 3}} d) }} | label66 = Template:Longitem | data66 = {{#if:|{{{perihelion_rate}}} arcsec Template:\yr }} | label67 = Template:Longitem | data67 = {{#if:|{{{node_rate}}} arcsec Template:\yr}}

| header70 = Template:Anchor{{#if:| Physical characteristics|Physical characteristics}}

| label71 = Dimensions | data71 = | label72 = Template:Longitem | data72 = ≈Template:Val<ref name="SheppardMoons"/> | label73 = Template:Longitem | data73 = | label74 = Template:Longitem | data74 = | label75 = Template:Longitem | data75 = | label76 = Flattening | data76 = | label77 = Circumference | data77 = | label78 = Template:Longitem | data78 = | label79 = Volume | data79 = | label80 = Mass | data80 = | label81 = Template:Longitem | data81 = | label82 = Template:Longitem | data82 = | label83 = Template:Longitem | data83 = | label84 = Template:Longitem | data84 = | label85 = Template:Longitem | data85 = | label86 = Template:Longitem | data86 = | label87 = Template:Longitem | data87 = | label88 = Template:Longitem | data88 = | label89 = Template:Longitem | data89 = | label90 = Template:Longitem | data90 = | label91 = Template:Longitem | data91 = | label92 = Template:Longitem | data92 = | label93 = {{#if: |Template:Longitem |Albedo}} | data93 = 0.04 Template:Small<ref name="SheppardMoons"/> | label94 = Temperature | data94 =

| data100 = {{#if:|

Surface temp.	min	mean	max
{{{temp_name1}}}
{{{temp_name2}}}
{{{temp_name3}}}
{{{temp_name4}}}

}}

| header110 = Atmosphere

| below = {{#if:||Template:Reflist }}

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Template:Nowrap is a retrograde irregular satellite of Jupiter. The moon was discovered on 5 February 2003 by a team of astronomers from the University of Hawaii led by Scott S. Sheppard and David C. Jewitt, and was later announced on 4 March 2003.<ref>IAUC 8087: Satellites of Jupiter 2003 March 4 (discovery)</ref><ref name="SheppardJewitt2003">Template:Cite journal</ref> It was initially thought to be Jupiter's outermost known moon until recovery observations disproved this in 2020.<ref name="Hecht2020">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

Template:Nowrap is about Template:Convert in diameter, and orbits Jupiter at an average distance of about 20,600,000 kilometers (Template:Convert) in roughly 600 days, at an inclination of around 149° to the ecliptic and with an eccentricity of 0.28. The moon was initially assumed to be part of the Pasiphae group, but is now known to be part of the Ananke group after it was recovered in 2020.<ref name="MPEC-2003-E11">MPEC 2003-E11: S/2003 J 1, 2003 J 2, 2003 J 3, 2003 J 4, 2003 J 5, 2003 J 6, 2003 J 7 2003 March 4 (discovery and ephemeris)</ref><ref name="Hecht2020"/>

File:2003 J 2 CFHT 2003-04-30.gif

S/2003 J 2 and several bright background stars and galaxies imaged by the CFHT in April 2003

The moon was considered lost<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref name=Jacobson>Template:Cite journal</ref><ref>Template:Cite journal</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> until 2020, when it was recovered by Sheppard and independently by amateur astronomer Kai Ly.<ref name="Hecht2020"/> The recovery of the moon was announced by the Minor Planet Center on 26 January 2021.<ref name="MPEC-2021-B134"/>

ReferencesEdit

Template:Reflist

Template:Moons of Jupiter