2010 TJ: Difference between revisions

{{Use dmy dates|date=February 2018}}

| minorplanet = yes

| name = 2010 TJ

| background = #C2E0FF

| image =

| image_size =

| caption =

| discovery_ref = <ref name="jpldata" /><ref name="MPC-CEN-SDO-list" />

| discoverer = [[David L. Rabinowitz|D. L. Rabinowitz]]<br />[[Megan Schwamb|M. E. Schwamb]]<br />[[Suzanne W. Tourtellotte|S. Tourtellotte]]

| discovery_site = [[La Silla Observatory|La Silla Obs.]]

| discovered = 2 October 2010<br />{{small|(first observed only)}}

| mpc_name = 2010 TJ

| alt_names =

| pronounced =

| named_after =

| mp_category = [[Trans-Neptunian object|TNO]]<ref name="jpldata" />{{·}}[[Scattered disc|SDO]]<ref name="johnstonsarchive-TNO-list" /><br />[[Distant minor planet|distant]]<ref name="MPC-object" />

| orbit_ref = <ref name="jpldata" />

| epoch = 4 September 2017 ([[Julian day|JD]] 2458000.5)

| uncertainty = 4

| observation_arc = 7.22 yr (2,636 days)

| aphelion = 84.870 [[Astronomical unit|AU]]

| perihelion = 39.894 AU

| semimajor = 62.382 AU

| eccentricity = 0.3605

| period = 492.72 [[Julian year (astronomy)|yr]] (179,965 [[Day|d]])

| mean_anomaly = 12.366[[Degree (angle)|°]]

| mean_motion = {{Deg2DMS|0.0020|sup=ms}} / day

| inclination = 38.931°

| asc_node = 91.226°

| arg_peri = 273.70°

| satellites =

| mass =

| mean_diameter = 443 km {{small|(estimated)}}<ref name="johnstonsarchive-TNO-list" /><br />471 km {{small|(assumed)}}<ref name="Brown-dplist" />

| rotation =

| albedo = 0.07 {{small|(assumed)}}<ref name="Brown-dplist" /><br />0.09 {{small|(assumed)}}<ref name="johnstonsarchive-TNO-list" />

| spectral_type =

| magnitude =

| abs_magnitude = 5.0<ref name="jpldata" />{{·}}5.3<ref name="Brown-dplist" />

'''{{mp|2010 TJ}}''' is a [[trans-Neptunian object]] from the [[scattered disc]] in the outermost region of the [[Solar System]] and measures approximately 460 kilometers in diameter. It was first observed by American astronomers [[David Rabinowitz]], [[Megan Schwamb]], and [[Suzanne Tourtellotte]] at ESO's [[La Silla Observatory]] in northern Chile on 2 October 2010.<ref name="MPC-object" />

== Orbit and classification ==

{{mp|2010 TJ}} is a [[list of possible dwarf planets|probably a dwarf planet]], based on [[Michael E. Brown|Michael Brown]]'s classification.<ref name="Brown-dplist" /> Typical for [[scattered disc object]]s,<ref name="johnstonsarchive-TNO-list" /> it has an elliptical and inclined orbit: the object orbits the Sun at a distance of 39.9–84.9&nbsp;[[Astronomical unit|AU]] once every 492 years and 9 months (179,965 days; [[semi-major axis]] of 62.4&nbsp;AU). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.36 and an [[orbital inclination|inclination]] of 39[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" /> The body's [[observation arc]] begins with its first observation at La Silla in October 2010.<ref name="MPC-object" />

== Physical characteristics ==

{{mp|2010 TJ}}'s [[Trans-Neptunian object#Colours|color]] and [[Trans-Neptunian object#Spectra|taxonomic type]] have not yet been determined.<ref name="jpldata" /><ref name="johnstonsarchive-TNO-list" />

=== Rotation period ===

As of 2018, no rotational [[lightcurve]] of {{mp|2010 TJ}} has been obtained from photometric observations. The object's [[rotation period]], shape and poles remain unknown.<ref name="lcdb" />

=== Diameter and albedo ===

According to the Johnston's Archive and Michael Brown, {{mp|2010 TJ}} measures 443 and 471 kilometers in diameter, and its surface has an assumed [[Astronomical albedo|albedo]] of 0.09 and 0.07, respectively.<ref name="johnstonsarchive-TNO-list" /><ref name="Brown-dplist" />

== Numbering and naming ==

This [[minor planet]] has neither been [[List of unnumbered minor planets|numbered]] nor [[List of named minor planets (alphabetical)|named]].<ref name="MPC-object" />

== References ==

{{reflist|refs=

|type = 2017-12-20 last obs.

|title = JPL Small-Body Database Browser: (2010 TJ)

|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3547935

|publisher = [[Jet Propulsion Laboratory]]

|access-date = 17 January 2018}}</ref>

<ref name="MPC-object">{{cite web

|title = 2010 TJ

|work = Minor Planet Center

|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=2010+TJ

|access-date = 17 January 2018}}</ref>

<ref name="MPC-CEN-SDO-list">{{cite web

|title = List Of Centaurs and Scattered-Disk Objects

|work = Minor Planet Center

|url = https://www.minorplanetcenter.net/iau/lists/t_centaurs.html

|access-date = 17 January 2018}}</ref>

<ref name="Brown-dplist">{{cite web

|title = How many dwarf planets are there in the outer solar system?

|publisher = [[California Institute of Technology]]

|author = Michael E. Brown

|url = http://web.gps.caltech.edu/~mbrown/dps.html

|access-date = 17 January 2018}}</ref>

<ref name="johnstonsarchive-TNO-list">{{cite web

|title = List of Known Trans-Neptunian Objects

|work = Johnston's Archive

|date = 15 October 2017

|author = Johnston, Wm. Robert

|url = http://www.johnstonsarchive.net/astro/tnoslist.html

|access-date = 17 January 2018}}</ref>

<ref name="lcdb">{{cite web

|title = LCDB Data for (2010 TJ)

|publisher = Asteroid Lightcurve Database (LCDB)

|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=0%7C2010+TJ

|access-date = 17 January 2018}}</ref>

}}

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* [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info] {{Webarchive|url=https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html |date=16 December 2017 }})

* {{AstDys|2010TJ}}

* {{JPL small body|id=3547935}}

{{Trans-Neptunian objects}}

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[[Category:Scattered disc and detached objects|#]]

[[Category:Minor planet object articles (unnumbered)]]

[[Category:Possible dwarf planets|#]]

[[Category:Astronomical objects discovered in 2010|20101002]]