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{{Short description|Stony Eoan asteroid from the outer regions of the asteroid belt}}
{{Use dmy dates|date=April 2018}}
{{Infobox planet
{{Infobox planet
| minorplanet = yes
| minorplanet = yes
| name = 2443 Tomeileen
| background = #FFFFC0
| background = #D6D6D6
| apsis =
| image =
| name = Tomeileen
| symbol =
| image_size =
| image =
| caption =
| discovery_ref = &thinsp;<ref name="MPC-object" />
| caption =
| discoverer = [[Max Wolf|M. F. Wolf]]
| discovery_ref =
| discovery_site = [[Heidelberg-Königstuhl State Observatory|Heidelberg Obs.]]
| discoverer = [[Max Wolf|M. Wolf]]
| discovered = 24 January 1906
| discovery_site = [[Heidelberg]]
| mpc_name = (2443) Tomeileen
| discovered = 24 January 1906
| alt_names = A906 BJ{{·}}1927 DD<br />1934 PS{{·}}1949 MV<br />{{mp|1950 RD|1}}{{·}}{{mp|1950 TF|3}}<br />1953 CH{{·}}1953 EO<br />1957 WH{{·}}1959 JR<br />{{mp|1961 TE|1}}{{·}}{{mp|1961 TW|1}}<br />1965 OE{{·}}{{mp|1974 DQ|1}}<br />{{mp|1974 FC|1}}{{·}}{{mp|1981 NN|1}}
| mpc_name = (2443) Tomeileen
| pronounced =
| alt_names = A906 BJ
| named_after = {{small|parents of British astronomer}} [[Brian G. Marsden]]&thinsp;<ref name="MPC-object" />
| mp_category =
| mp_category = [[main-belt]]&thinsp;<ref name="MPC-object" /><ref name="jpldata" />{{·}}{{small|([[Kirkwood gap|outer]])}}<br />[[Eos family|Eos]]&thinsp;<ref name="lcdb" /><ref name="Ferret" /><ref name="Alvarez-2004" />
| orbit_ref = <ref name="jpldata">{{Cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2443;cad=1 |title=2443 Tomeileen (A906 BJ) |work=[[JPL Small-Body Database]] |publisher=[[NASA]]/[[Jet Propulsion Laboratory]] |access-date=15 April 2016}}</ref>
| orbit_ref = &thinsp;<ref name="jpldata" />
| epoch = 13 January 2016 ([[Julian day|JD]] 2457400.5)
| epoch = 23 March 2018 ([[Julian day|JD]] 2458200.5)
| aphelion = {{Convert|3.1865962|AU|Gm|abbr=on|lk=on}}
| uncertainty = 0
| perihelion = {{Convert|2.8289587|AU|Gm|abbr=on}}
| observation_arc = 111.76 [[Julian year (astronomy)|yr]] (40,821 d)
| semimajor = {{Convert|3.007777|AU|Gm|abbr=on}}
| aphelion = 3.1804 [[Astronomical unit|AU]]
| eccentricity = 0.0594521
| perihelion = 2.8297 AU
| period = 5.22 [[Julian year (astronomy)|yr]] (1905.3 [[Julian year (astronomy)|d]])
| semimajor = 3.0050 AU
| avg_speed =
| eccentricity = 0.0584
| inclination = 11.44590°
| period = 5.21 yr (1,903 d)
| asc_node = 118.81052°
| mean_anomaly = 346.34246[[Degree (angle)|°]]
| mean_anomaly = 138.10[[Degree (angle)|°]]
| mean_motion = {{Deg2DMS|0.1892|sup=ms}} / day
| arg_peri = 68.82274°
| inclination = 11.444°
| satellites =
| asc_node = 118.77°
| dimensions =
| arg_peri = 68.441°
| mass =
| mean_diameter = {{val|28.44|0.76|ul=km}}<ref name="Masiero-2012" /><br />{{val|30.89|1.6|u=km}}<ref name="SIMPS" /><br />{{val|31.878|0.412|u=km}}<ref name="Masiero-2014" /><br />{{val|34.07|0.65|u=km}}<ref name="AKARI" /><br />{{val|37.577|0.236|u=km}}<ref name="WISE" />
| density =
| rotation = {{val|3.974|ul=h}}<ref name="Alvarez-2004" /><br />{{val|4.0|0.1|u=h}}{{efn|name=lcdb-Aznar-2011}}<br />{{val|6.822|0.001|u=h}}<ref name="geneva-obs" />
| surface_grav =
| albedo = {{val|0.1042|0.0091}}<ref name="WISE" /><br />{{val|0.127|0.005}}<ref name="AKARI" /><br />0.1539 {{small|(derived)}}<ref name="lcdb" /><br />{{val|0.1541|0.017}}<ref name="SIMPS" /><br />{{val|0.199|0.025}}<ref name="Masiero-2012" />
| escape_velocity =
| spectral_type = [[S-type asteroid|S]] {{small|(SDSS-MFB)}}<ref name="lcdb" />{{efn|name=SDSS-MFB}}
| sidereal_day =
| abs_magnitude = 10.10<ref name="Masiero-2012" />{{·}}10.20<ref name="jpldata" /><ref name="lcdb" /><ref name="SIMPS" /><ref name="AKARI" /><ref name="WISE" /><br />{{val|10.34|0.41}}<ref name="Veres-2015" />
| axial_tilt =
| pole_ecliptic_lat =
| pole_ecliptic_lon =
| albedo = 0.1541 ± 0.017
| temperatures=
| temp_name1 =
| mean_temp_1 =
| max_temp_1 =
| temp_name2 =
| max_temp_2 =
| spectral_type =
| abs_magnitude = 10.2
| rotation = {{nowrap|3.974 ± 0.001 h}}<ref name=icarus172_2_388/>
| observation_arc = 110.15 yr (40231 days)
| uncertainty = 0
| mean_motion = {{Deg2DMS|0.1889451|sup=ms}} / day
| mean_radius = 15.445 ± 0.8 [[Kilometre|km]]
| moid = {{Convert|1.85689|AU|Gm|abbr=on}}
| jupiter_moid = {{Convert|1.87725|AU|Gm|abbr=on}}
| tisserand = 3.218
}}
}}
'''2443 Tomeileen''' (A906 BJ) is an Eoan [[Asteroid belt|main-belt]] [[asteroid]] discovered on 24 January 1906 by [[Max Wolf|M. Wolf]] at [[Heidelberg]]. It is a member of the [[Eos family]].<ref name=icarus172_2_388/>


'''2443 Tomeileen''', provisional designation {{mp|A906 BJ}}, is a stony Eoan [[asteroid]] from the outer regions of the [[asteroid belt]], approximately {{convert|32|km|mi|abbr=off|sp=us}} in diameter. It was discovered on 24 January 1906, by German astronomer [[Max Wolf]] at the [[Heidelberg-Königstuhl State Observatory]] in Heidelberg, Germany. The [[S-type asteroid]] was named after the parents of British astronomer [[Brian G. Marsden]].<ref name="MPC-object" /> It has a [[rotation period]] of 3.97 hours.<ref name="lcdb" />
==References==
{{reflist|refs=


== Orbit and classification ==
<ref name=icarus172_2_388>{{citation | display-authors=1 | last1=Alvarez-Candal | first1=Alvaro | last2=Duffard | first2=René | last3=Angeli | first3=Cláudia A. | last4=Lazzaro | first4=Daniela | last5=Fernández | first5=Silvia | title=Rotational lightcurves of asteroids belonging to families | journal=Icarus | volume=172 | issue=2 | pages=388–401 | doi=10.1016/j.icarus.2004.06.008 | bibcode=2004Icar..172..388A | postscript=. |date=December 2004}}</ref>


''Tomeileen'' is a member the [[Eos family]] ({{small|[[FIN tbl#606|606]]}}),<ref name="lcdb" /><ref name="Ferret" /> the largest [[asteroid family]] of the [[Kirkwood gap|outer]] main belt consisting of nearly 10,000 asteroids.<ref name="Nesvorny-2014" /> It orbits the Sun in the [[Kirkwood gap|outer]] main-belt at a distance of 2.8–3.2&nbsp;[[Astronomical unit|AU]] once every 5 years and 3 months (1,903 days; [[semi-major axis]] of 3.01&nbsp;AU). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.06 and an [[orbital inclination|inclination]] of 11[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" /> The body's [[observation arc]] begins with its official discovery observation at Heidelberg in January 1906.<ref name="MPC-object" />
}}

== Physical characteristics ==

''Tomeileen'' has been characterized as a stony [[S-type asteroid]] in the [[Sloan Digital Sky Survey|SDSS]]-MFB (Masi Foglia Binzel) taxonomy.<ref name="lcdb" />{{efn|name=SDSS-MFB}}

=== Rotation period ===

Between 2004 and 2010, three rotational [[lightcurve]]s of ''Tomeileen'' were obtained from photometric observations by Brazilian and Argentine astronomers,<ref name="Alvarez-2004" /> Amadeo Aznar at Puzol Observatory {{Obscode|J42}},{{efn|name=lcdb-Aznar-2011}} and [[Laurent Bernasconi]] in France.<ref name="geneva-obs" /> Lightcurve analysis gave a [[rotation period]] of 3.974, 4.0 and 6.822 hours with a brightness amplitude of 0.1, 0.10 and 0.13 [[Magnitude (astronomy)|magnitude]], respectively ({{small|[[LCDB quality code|U=2/2/2]]}}).<ref name="lcdb" /> A low amplitude is indicative of a spherical rather than elongated shape.

=== Diameter and albedo ===

According to the surveys carried out by the Infrared Astronomical Satellite [[IRAS]], the Japanese [[Akari (satellite)|Akari satellite]] and the [[NEOWISE]] mission of NASA's [[Wide-field Infrared Survey Explorer]], ''Tomeileen'' measures between 28.44 and 37.577 kilometers in diameter and its surface has an [[astronomical albedo|albedo]] between 0.1042 and 0.199.<ref name="Masiero-2012" /><ref name="SIMPS" /><ref name="Masiero-2014" /><ref name="AKARI" /><ref name="WISE" />

The ''Collaborative Asteroid Lightcurve Link'' derives an albedo of 0.1539 and a diameter of kilometers based on an [[absolute magnitude]] of 10.2.<ref name="lcdb" />

== Naming ==

This [[minor planet]] was named after Thomas Marsden (1905–1980) and Eileen (née West) Marsden (1905–1981), the parents of British astronomer and longtime director of the [[Minor Planet Center]] (MPC), [[Brian G. Marsden]] (1937–2010).<ref name="MPC-object" /> The official naming citation was published by the MPC on 8 April 1982 ({{small|[[Minor Planet Circulars|M.P.C.]] 6833}}).<ref name="MPC-Circulars-Archive" />

== Notes ==
{{notelist|refs=

{{efn|name=lcdb-Aznar-2011|1=Aznar (2011) web: observation from February 2010, rotation period {{val|4.0|0.1}} hours with a brightness amplitude of {{val|0.10|0.02}} mag. Quality code of 2. Summary figures for (2443) Tomeileen at the [http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=2443%7CTomeileen LCDB]}}

{{efn|name=SDSS-MFB|1=Search for Unusual Spectroscopic Candidates Among 40313 minor planets from the 3rd Release of the Sloan Digital Sky Survey Moving Object Catalog ([http://people.roma2.infn.it/~masi/sdss_smass/sdsssmass.pdf publication]). [[Sloan Digital Sky Survey|SDSS]]-MFB (Masi Foglia Binzel) taxonomy ([http://people.roma2.infn.it/~masi/sdss_smass/sdsssmass.txt catalog]).}}

}} <!-- end of notelist -->

== References ==
{{reflist|30em|refs=

<ref name="jpldata">{{cite web
|type = 2017-10-29 last obs.
|title = JPL Small-Body Database Browser: 2443 Tomeileen (A906 BJ)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002443
|archive-url = https://web.archive.org/web/20200920031451/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002443
|url-status = dead
|archive-date = 20 September 2020
|publisher = [[Jet Propulsion Laboratory]]
|accessdate = 4 April 2018}}</ref>

<ref name="MPC-object">{{cite web
|title = 2443 Tomeileen (A906 BJ)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=2443
|accessdate = 4 April 2018}}</ref>

<ref name="MPC-Circulars-Archive">{{cite web
|title = MPC/MPO/MPS Archive
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
|accessdate = 4 April 2018}}</ref>

<ref name="geneva-obs">{{cite web
|title = Asteroids and comets rotation curves – (2443) Tomeileen
|last = Behrend |first = Raoul
|publisher = Geneva Observatory
|url = http://obswww.unige.ch/~behrend/page4cou.html#002443
|accessdate = 4 April 2018}}</ref>

<ref name="Masiero-2014">{{cite journal
|display-authors = 6
|first1 = Joseph R. |last1 = Masiero
|first2 = T. |last2 = Grav
|first3 = A. K. |last3 = Mainzer
|first4 = C. R. |last4 = Nugent
|first5 = J. M. |last5 = Bauer
|first6 = R. |last6 = Stevenson
|first7 = S. |last7 = Sonnett
|date = August 2014
|title = Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos
|journal = The Astrophysical Journal
|volume = 791
|issue = 2
|page = 11
|bibcode = 2014ApJ...791..121M
|doi = 10.1088/0004-637X/791/2/121
|arxiv = 1406.6645
}}</ref>

<ref name="Ferret">{{cite web
|title = Asteroid 2443 Tomeileen – Nesvorny HCM Asteroid Families V3.0
|work = Small Bodies Data Ferret
|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=2443+Tomeileen#Asteroid%202443%20TomeileenEAR-A-VARGBDET-5-NESVORNYFAM-V3.0
|accessdate = 26 October 2019}}</ref>

<ref name="Nesvorny-2014">{{Cite book
|first1 = D. |last1 = Nesvorný
|first2 = M. |last2 = Broz
|first3 = V. |last3 = Carruba
|date = December 2014
|chapter = Identification and Dynamical Properties of Asteroid Families
|title = Asteroids IV
|pages = 297–321
|bibcode = 2015aste.book..297N
|doi = 10.2458/azu_uapress_9780816532131-ch016
|arxiv = 1502.01628
|isbn = 9780816532131
}}</ref>

<ref name="lcdb">{{cite web
|title = LCDB Data for (2443) Tomeileen
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=2443%7CTomeileen
|accessdate = 4 April 2018}}</ref>

<ref name="AKARI">{{cite journal
|display-authors = 6
|first1 = Fumihiko |last1 = Usui
|first2 = Daisuke |last2 = Kuroda
|first3 = Thomas G. |last3 = Müller
|first4 = Sunao |last4 = Hasegawa
|first5 = Masateru |last5 = Ishiguro
|first6 = Takafumi |last6 = Ootsubo
|first7 = Daisuke |last7 = Ishihara
|first8 = Hirokazu |last8 = Kataza
|first9 = Satoshi |last9 = Takita
|first10 = Shinki |last10 = Oyabu
|first11 = Munetaka |last11 = Ueno
|first12 = Hideo |last12 = Matsuhara
|first13 = Takashi |last13 = Onaka
|date = October 2011
|title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey
|journal = Publications of the Astronomical Society of Japan
|volume = 63
|issue = 5
|pages = 1117–1138
|bibcode = 2011PASJ...63.1117U
|doi = 10.1093/pasj/63.5.1117
|doi-access=
}} ([http://vizier.cfa.harvard.edu/viz-bin/VizieR-5?-source=J/PASJ/63/1117/acua_v1&Num=2443 online], [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])</ref>

<ref name="WISE">{{cite journal
|display-authors = 6
|first1 = A. |last1 = Mainzer
|first2 = T. |last2 = Grav
|first3 = J. |last3 = Masiero
|first4 = E. |last4 = Hand
|first5 = J. |last5 = Bauer
|first6 = D. |last6 = Tholen
|first7 = R. S. |last7 = McMillan
|first8 = T. |last8 = Spahr
|first9 = R. M. |last9 = Cutri
|first10 = E. |last10 = Wright
|first11 = J. |last11 = Watkins
|first12 = W. |last12 = Mo
|first13 = C. |last13 = Maleszewski
|date = November 2011
|title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results
|journal = The Astrophysical Journal
|volume = 741
|issue = 2
|page = 25
|bibcode = 2011ApJ...741...90M
|doi = 10.1088/0004-637X/741/2/90
|arxiv = 1109.6407
}}</ref>

<ref name="Masiero-2012">{{cite journal
|display-authors = 6
|first1 = Joseph R. |last1 = Masiero
|first2 = A. K. |last2 = Mainzer
|first3 = T. |last3 = Grav
|first4 = J. M. |last4 = Bauer
|first5 = R. M. |last5 = Cutri
|first6 = C. |last6 = Nugent
|first7 = M. S. |last7 = Cabrera
|date = November 2012
|title = Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids
|journal = The Astrophysical Journal Letters
|volume = 759
|issue = 1
|page = 5
|bibcode = 2012ApJ...759L...8M
|doi = 10.1088/2041-8205/759/1/L8
|arxiv = 1209.5794
}}</ref>

<ref name="SIMPS">{{cite journal
|first1 = E. F. |last1 = Tedesco
|first2 = P. V. |last2 = Noah
|first3 = M. |last3 = Noah
|first4 = S. D. |last4 = Price
|date = October 2004
|title = IRAS Minor Planet Survey V6.0
|url = https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab
|journal = NASA Planetary Data System
|volume = 12
|pages = IRAS-A-FPA-3-RDR-IMPS-V6.0
|bibcode = 2004PDSS...12.....T
|accessdate = 22 October 2019}}</ref>

<ref name="Alvarez-2004">{{Cite journal
|first1 = Alvaro |last1 = Alvarez-Candal
|first2 = René |last2 = Duffard
|first3 = Cláudia A. |last3 = Angeli
|first4 = Daniela |last4 = Lazzaro
|first5 = Silvia |last5 = Fernández
|date = December 2004
|title = Rotational lightcurves of asteroids belonging to families
|journal = Icarus
|volume = 172
|issue = 2
|pages = 388–401
|bibcode = 2004Icar..172..388A
|doi = 10.1016/j.icarus.2004.06.008
}}</ref>

<ref name="Veres-2015">{{cite journal
|display-authors = 6
|first1 = Peter |last1 = Veres
|first2 = Robert |last2 = Jedicke
|first3 = Alan |last3 = Fitzsimmons
|first4 = Larry |last4 = Denneau
|first5 = Mikael |last5 = Granvik
|first6 = Bryce |last6 = Bolin
|first7 = Serge |last7 = Chastel
|first8 = Richard J. |last8 = Wainscoat
|first9 = William S. |last9 = Burgett
|first10 = Kenneth C. |last10 = Chambers
|first11 = Heather |last11 = Flewelling
|first12 = Nick |last12 = Kaiser
|first13 = Eugen A. |last13 = Magnier
|first14 = Jeff S. |last14 = Morgan
|first15 = Paul A. |last15 = Price
|first16 = John L. |last16 = Tonry
|first17 = Christopher |last17 = Waters
|date = November 2015
|title = Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results
|journal = Icarus
|volume = 261
|pages = 34–47
|bibcode = 2015Icar..261...34V
|doi = 10.1016/j.icarus.2015.08.007
|arxiv = 1506.00762
}}</ref>

}} <!-- end of reflist -->


== External links ==
== External links ==
* [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 }})
* Aznar, A. (2011) https://web.archive.org/web/20090519063302/http://www.apt.com.es/amadeo/asteroides.html
* [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2443+Tomeileen JPL Small-Body Database Browser on 2443 Tomeileen]
* [http://obswww.unige.ch/~behrend/page_cou.html Asteroids and comets rotation curves, CdR] – Observatoire de Genève, Raoul Behrend
* [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
* {{AstDys|2443}}
* {{JPL small body}}
* {{JPL small body}}


{{Minor planets navigator |2442 Corbett |number=2443 |2444 Lederle}}
{{Minor planets navigator |2442 Corbett |number=2443 |2444 Lederle}}
{{Small Solar System bodies}}
{{Small Solar System bodies}}
{{Authority control}}


{{DEFAULTSORT:Tomeileen}}
{{DEFAULTSORT:Tomeileen}}
[[Category:Eos asteroids|002443]]
[[Category:Eos asteroids|002443]]
[[Category:Numbered minor planets|002443]]
[[Category:Discoveries by Max Wolf]]
[[Category:Discoveries by Max Wolf]]
[[Category:Minor planets named for people]]
[[Category:Named minor planets]]
[[Category:Named minor planets]]
[[Category:Astronomical objects discovered in 1906|19060124]]
[[Category:Astronomical objects discovered in 1906|19060124]]


{{Beltasteroid-stub}}

Latest revision as of 12:48, 7 July 2024

2443 Tomeileen
Discovery [1]
Discovered byM. F. Wolf
Discovery siteHeidelberg Obs.
Discovery date24 January 1906
Designations
(2443) Tomeileen
Named after
parents of British astronomer Brian G. Marsden [1]
A906 BJ · 1927 DD
1934 PS · 1949 MV
1950 RD1 · 1950 TF3
1953 CH · 1953 EO
1957 WH · 1959 JR
1961 TE1 · 1961 TW1
1965 OE · 1974 DQ1
1974 FC1 · 1981 NN1
main-belt [1][2] · (outer)
Eos [3][4][5]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc111.76 yr (40,821 d)
Aphelion3.1804 AU
Perihelion2.8297 AU
3.0050 AU
Eccentricity0.0584
5.21 yr (1,903 d)
138.10°
0° 11m 21.12s / day
Inclination11.444°
118.77°
68.441°
Physical characteristics
28.44±0.76 km[6]
30.89±1.6 km[7]
31.878±0.412 km[8]
34.07±0.65 km[9]
37.577±0.236 km[10]
3.974 h[5]
4.0±0.1 h[a]
6.822±0.001 h[11]
0.1042±0.0091[10]
0.127±0.005[9]
0.1539 (derived)[3]
0.1541±0.017[7]
0.199±0.025[6]
S (SDSS-MFB)[3][b]
10.10[6] · 10.20[2][3][7][9][10]
10.34±0.41[12]

2443 Tomeileen, provisional designation A906 BJ, is a stony Eoan asteroid from the outer regions of the asteroid belt, approximately 32 kilometers (20 miles) in diameter. It was discovered on 24 January 1906, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in Heidelberg, Germany. The S-type asteroid was named after the parents of British astronomer Brian G. Marsden.[1] It has a rotation period of 3.97 hours.[3]

Orbit and classification

[edit]

Tomeileen is a member the Eos family (606),[3][4] the largest asteroid family of the outer main belt consisting of nearly 10,000 asteroids.[13] It orbits the Sun in the outer main-belt at a distance of 2.8–3.2 AU once every 5 years and 3 months (1,903 days; semi-major axis of 3.01 AU). Its orbit has an eccentricity of 0.06 and an inclination of 11° with respect to the ecliptic.[2] The body's observation arc begins with its official discovery observation at Heidelberg in January 1906.[1]

Physical characteristics

[edit]

Tomeileen has been characterized as a stony S-type asteroid in the SDSS-MFB (Masi Foglia Binzel) taxonomy.[3][b]

Rotation period

[edit]

Between 2004 and 2010, three rotational lightcurves of Tomeileen were obtained from photometric observations by Brazilian and Argentine astronomers,[5] Amadeo Aznar at Puzol Observatory (J42),[a] and Laurent Bernasconi in France.[11] Lightcurve analysis gave a rotation period of 3.974, 4.0 and 6.822 hours with a brightness amplitude of 0.1, 0.10 and 0.13 magnitude, respectively (U=2/2/2).[3] A low amplitude is indicative of a spherical rather than elongated shape.

Diameter and albedo

[edit]

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Tomeileen measures between 28.44 and 37.577 kilometers in diameter and its surface has an albedo between 0.1042 and 0.199.[6][7][8][9][10]

The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1539 and a diameter of kilometers based on an absolute magnitude of 10.2.[3]

Naming

[edit]

This minor planet was named after Thomas Marsden (1905–1980) and Eileen (née West) Marsden (1905–1981), the parents of British astronomer and longtime director of the Minor Planet Center (MPC), Brian G. Marsden (1937–2010).[1] The official naming citation was published by the MPC on 8 April 1982 (M.P.C. 6833).[14]

Notes

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  1. ^ a b Aznar (2011) web: observation from February 2010, rotation period 4.0±0.1 hours with a brightness amplitude of 0.10±0.02 mag. Quality code of 2. Summary figures for (2443) Tomeileen at the LCDB
  2. ^ a b Search for Unusual Spectroscopic Candidates Among 40313 minor planets from the 3rd Release of the Sloan Digital Sky Survey Moving Object Catalog (publication). SDSS-MFB (Masi Foglia Binzel) taxonomy (catalog).

References

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  1. ^ a b c d e f "2443 Tomeileen (A906 BJ)". Minor Planet Center. Retrieved 4 April 2018.
  2. ^ a b c d "JPL Small-Body Database Browser: 2443 Tomeileen (A906 BJ)" (2017-10-29 last obs.). Jet Propulsion Laboratory. Archived from the original on 20 September 2020. Retrieved 4 April 2018.
  3. ^ a b c d e f g h i "LCDB Data for (2443) Tomeileen". Asteroid Lightcurve Database (LCDB). Retrieved 4 April 2018.
  4. ^ a b "Asteroid 2443 Tomeileen – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
  5. ^ a b c Alvarez-Candal, Alvaro; Duffard, René; Angeli, Cláudia A.; Lazzaro, Daniela; Fernández, Silvia (December 2004). "Rotational lightcurves of asteroids belonging to families". Icarus. 172 (2): 388–401. Bibcode:2004Icar..172..388A. doi:10.1016/j.icarus.2004.06.008.
  6. ^ a b c d Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8.
  7. ^ a b c d Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
  8. ^ a b Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121.
  9. ^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
  10. ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
  11. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (2443) Tomeileen". Geneva Observatory. Retrieved 4 April 2018.
  12. ^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007.
  13. ^ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.
  14. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 4 April 2018.
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