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{{Use dmy dates|date=May 2018}}
{{Infobox planet
{{Infobox planet
| minorplanet = yes
| minorplanet = yes
| name = 3640 Gostin
| background = #FFFFC0
| background = #D6D6D6
| apsis =
| image =
| name = Gostin
| symbol =
| image_size =
| image =
| caption =
| discovery_ref = &thinsp;<ref name="MPC-object" />
| caption =
| discoverer = [[Carolyn Shoemaker|C. Shoemaker]]<br />[[Eugene Shoemaker|E. Shoemaker]]
| discovery_ref =
| discovery_site = [[Palomar Observatory|Palomar Obs.]]
| discoverer = [[Shoemaker, C.]] and [[Shoemaker, E.]]
| discovered = 11 October 1985
| discovery_site = [[Palomar Observatory|Palomar]]
| mpc_name = (3640) Gostin
| discovered = 11 October 1985
| alt_names = {{mp|1985 TR|3}}{{·}}1955 SS<br />1960 CB{{·}}1970 CS<br />{{mp|1972 VJ|1}}
| mpc_name = (3640) Gostin
| pronounced =
| alt_names = 1985 TR3
| named_after = [[Victor Gostin]]&thinsp;<ref name="MPC-object" /><br />{{small|(Australian geologist)}}
| mp_category =
| mp_category = [[main-belt]]&thinsp;<ref name="MPC-object" /><ref name="jpldata" />{{·}}{{small|([[Kirkwood gap|inner]])}}<br />[[Flora family|Flora]]&thinsp;<ref name="lcdb" /><ref name="Ferret" />
| orbit_ref = <ref name="jpldata">{{Cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3640;cad=1 |title=3640 Gostin (1985 TR3) |work=[[JPL Small-Body Database]] |publisher=[[NASA]]/[[Jet Propulsion Laboratory]] |access-date=14 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|2.4158724|AU|Gm|abbr=on|lk=on}}
| uncertainty = 0
| perihelion = {{Convert|2.0331222|AU|Gm|abbr=on}}
| observation_arc = 61.63 [[Julian year (astronomy)|yr]] (22,511 d)
| semimajor = {{Convert|2.224497|AU|Gm|abbr=on}}
| aphelion = 2.4175 [[Astronomical unit|AU]]
| eccentricity = 0.0860307
| perihelion = 2.0311 AU
| period = 3.32 [[Julian year (astronomy)|yr]] (1211.8 [[Julian year (astronomy)|d]])
| semimajor = 2.2243 AU
| avg_speed =
| eccentricity = 0.0869
| inclination = 4.311460°
| period = 3.32 yr (1,212 d)
| asc_node = 289.25606°
| mean_anomaly = 347.14372[[Degree (angle)|°]]
| mean_anomaly = 224.62[[Degree (angle)|°]]
| mean_motion = {{Deg2DMS|0.2971|sup=ms}} / day
| arg_peri = 155.40312°
| inclination = 4.3118°
| satellites =
| asc_node = 289.19°
| dimensions =
| arg_peri = 155.59°
| mass =
| mean_diameter = {{val|7.148|0.088|ul=km}}<ref name="Masiero-2014" /><br />{{val|7.613|0.096|u=km}}<ref name="WISE" /><br />8.58 km {{small|(calculated)}}<ref name="lcdb" />
| density =
| rotation = {{val|3.26|0.05|ul=h}}<ref name="Chang-2014a" /><br />{{val|3.263|0.0009|u=h}}<ref name="Waszczak-2015" /><br />{{val|3.263|0.003|u=h}}<ref name="Klinglesmith-2016b" /><br />{{val|3.2641|0.0005|u=h}}<ref name="Albers-2010" />
| surface_grav =
| albedo = {{val|0.2127|0.0446}}<ref name="WISE" /><br />{{val|0.239|0.036}}<ref name="Masiero-2014" /><br />{{val|0.24}} {{small|(assumed)}}<ref name="lcdb" />
| escape_velocity =
| spectral_type = [[SMASS classification|SMASS]] {{=}} [[S-type asteroid|S]]&thinsp;<ref name="jpldata" /><ref name="lcdb" />
| sidereal_day =
| abs_magnitude = {{val|12.26|0.14}} {{small|(R)}}<ref name="Chang-2014a" /><br />{{val|12.398|0.001}} {{small|(R)}}<ref name="Waszczak-2015" /><br />12.5<ref name="jpldata" /><ref name="lcdb" /><br />{{val|12.62|0.20}}<ref name="Veres-2015" /><br />12.9<ref name="WISE" />
| axial_tilt =
| pole_ecliptic_lat =
| pole_ecliptic_lon =
| albedo =
| temperatures=
| temp_name1 =
| mean_temp_1 =
| max_temp_1 =
| temp_name2 =
| max_temp_2 =
| spectral_type =
| abs_magnitude = 12.5
| mean_motion = {{Deg2DMS|0.2970683|sup=ms}} / day
| rotation = {{Convert|3.2641|h|d|abbr=on|lk=on}}
| observation_arc = 22100 days (60.51 yr)
| uncertainty = 0
| moid = {{Convert|1.04972|AU|Gm|abbr=on}}
| jupiter_moid = {{Convert|2.73535|AU|Gm|abbr=on}}
| tisserand = 3.638
}}
}}
'''3640 Gostin''' (1985 TR3) is a [[Asteroid belt|main-belt]] [[asteroid]] discovered on October 11, 1985 by [[Shoemaker, C.]] and [[Shoemaker, E.]] at [[Palomar Observatory|Palomar]].


'''3640 Gostin''', provisional designation {{mp|1985 TR|3}}, is a stony Florian [[asteroid]] from the inner regions of the [[asteroid belt]], approximately {{convert|8|km|mi|abbr=off|sigfig=1|sp=us}} in diameter. It was discovered on 11 October 1985, by American astronomer couple [[Carolyn Shoemaker|Carolyn]] and [[Eugene Shoemaker]] at the [[Palomar Observatory]] in California.<ref name="MPC-object" /> The [[S-type asteroid]] has a [[rotation period]] of 3.26 hours.<ref name="lcdb" /> It was named for Australian geologist [[Victor Gostin]].<ref name="MPC-object" />
It is named after geologist [[Victor Gostin|Victor A. Gostin]]<ref>Schmadel, Lutz D. (2003): ''Dictionary of minor planet names'', 5th Ed. Springer Verlag, Berlin, Heidelberg, New York {{ISBN|3-540-00238-3}} [https://books.google.com/books?id=KWrB1jPCa8AC&pg=PA306&lpg=PA306&dq=3640+Gostin&source=bl&ots=BFMMcWIe0J&sig=FBtiuogRE5E6cD_UMma9xP8yzSs&hl=en&ei=z3OXTIfjBIKycKjTkKQF&sa=X&oi=book_result&ct=result&resnum=9&ved=0CDIQ6AEwCA#v=onepage&q=3640%20Gostin&f=false . Google Books preview, 21 September 2010]</ref> of the [[University of Adelaide]], who in the 1980s discovered the ejecta layer from the [[Acraman crater|Acraman]] bolide impact at a distance of 300&nbsp;km from the impact site, within [[Ediacaran]] sedimentary rocks of the [[Flinders Ranges]], [[South Australia]], which enabled the impact to be dated at ~580 Ma.<ref name=Gostin1986>{{cite journal | author = Gostin, V.A. |author2= Haines, P.W.|author3= Jenkins, R.J.F.|author4= Compston, W.|author5= Williams, I.S. | year = 1986 | title = Impact Ejecta Horizon Within Late Precambrian Shales, Adelaide Geosyncline, South Australia | journal = Science | volume = 233 | issue = 4760 | pages = 198–200 | doi = 10.1126/science.233.4760.198 | pmid = 17737290 |bibcode = 1986Sci...233..198G }}</ref>


== Orbit and classification ==
==References==
{{Reflist}}


''Gostin'' is a member of the [[1562 Gondolatsch|Gondolatsch]]-cluster within the [[Flora family]] ({{small|[[FIN tbl#402|402]]}}),<ref name="lcdb" /><ref name="Ferret" /> a giant [[asteroid family]] and the largest family of stony asteroids in the main-belt,<ref name="Nesvorny-2014" />
==External links==

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3640+Gostin JPL Small-Body Database Browser on 3640 Gostin]
It orbits the Sun in the [[Kirkwood gap|inner]] main-belt at a distance of 2.0–2.4&nbsp;[[Astronomical unit|AU]] once every 3 years and 4 months (1,212 days; [[semi-major axis]] of 2.22&nbsp;AU). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.09 and an [[orbital inclination|inclination]] of 4[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" /> The body's [[observation arc]] begins with its first observation as {{mp|1955 SS}} at the [[Goethe Link Observatory]] in September 1955, or 30 years prior to its official discovery observation at Palomar.<ref name="MPC-object" />

== Physical characteristics ==

In the [[SMASS classification]], ''Gostin'' is a common, stony [[S-type asteroid]].<ref name="jpldata" />

=== Rotation period ===

In March 2010, a rotational [[lightcurve]] of ''Gostin'' was obtained from [[Photometry (astronomy)|photometric]] observations at the [[Oakley Southern Sky Observatory]]. Lightcurve analysis gave a well-defined [[rotation period]] of 3.2641 hours with a brightness variation of 0.40 [[Magnitude (astronomy)|magnitude]] ({{small|[[LCDB quality code|U=3]]}}).<ref name="Albers-2010" /> Concurring lightcurves were also obtained at the [[Palomar Transient Factory]] and at the Etscorn Campus Observatory ({{small|[[LCDB quality code|U=3/2/3]]}}).<ref name="lcdb" /><ref name="Chang-2014a" /><ref name="Waszczak-2015" /><ref name="Klinglesmith-2016b" />

=== Diameter and albedo ===

According to the survey carried out by the [[NEOWISE]] mission of NASA's [[Wide-field Infrared Survey Explorer]], ''Gostin'' measures 7.148 and 7.613 kilometers in diameter and its surface has an [[astronomical albedo|albedo]] of 0.239 and 0.2127, respectively.<ref name="Masiero-2014" /><ref name="WISE" /> The ''Collaborative Asteroid Lightcurve Link'' assumes an albedo of 0.24 – derived from [[8&nbsp;Flora]], the [[parent body]] of the Flora family – and calculates a diameter of 8.58 kilometers based on an [[absolute magnitude]] of 12.5.<ref name="lcdb" />

== Naming ==

This [[minor planet]] was named by the discoverers after Australian geologist [[Victor Gostin]] (born 1940) of the [[University of Adelaide]], who in the 1980s discovered the ejecta layer from the [[Acraman crater|Acraman]] bolide impact at a distance of 300 kilometers from the impact site, within [[Ediacaran]] sedimentary rocks of the [[Flinders Ranges]], [[South Australia]], which enabled the impact to be dated at ~580 Ma.<ref name="MPC-object" /><ref name="Gostin-1986" /> The official naming citation was published by the [[Minor Planet Center]] on 2 February 1988 ({{small|[[Minor Planet Circulars|M.P.C.]] 12808}}).<ref name="MPC-Circulars-Archive" />

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

<ref name="jpldata">{{cite web
|type = 2017-05-05 last obs.
|title = JPL Small-Body Database Browser: 3640 Gostin (1985 TR3)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003640
|publisher = [[Jet Propulsion Laboratory]]
|access-date = 15 May 2018}}</ref>

<ref name="MPC-object">{{cite web
|title = 3640 Gostin (1985 TR3)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=3640
|access-date = 15 May 2018}}</ref>

<ref name="Gostin-1986">{{Cite journal
|first1 = V. A. |last1 = Gostin
|first2 = P. W. |last2 = Haines
|first3 = R. J. F. |last3 = Jenkins
|first4 = W. |last4 = Compston
|first5 = I. S. |last5 = Williams
|date = July 1986
|title = Impact ejecta horizon within late Precambrian shales, Adelaide Geosyncline, South Australia
|journal = Science
|volume = 233
|issue = 4760
|pages = 198–200
|issn = 0036-8075
|bibcode = 1986Sci...233..198G
|doi = 10.1126/science.233.4760.198|pmid = 17737290
|s2cid = 11307364
}}</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
|access-date = 15 May 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|s2cid = 119293330 }}</ref>

<ref name="Ferret">{{cite web
|title = Asteroid 3669 Vertinskij
|work = Small Bodies Data Ferret
|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=3640%20Gostin
|access-date = 15 May 2018}}</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|s2cid = 119280014
}}</ref>

<ref name="lcdb">{{cite web
|title = LCDB Data for (3640) Gostin
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=3640%7CGostin
|access-date = 15 May 2018}}</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
|s2cid = 35447010 }} ([http://iopscience.iop.org/0004-637X/741/2/68/fulltext/apj398969t1_mrt.txt catalog])</ref>

<ref name="Chang-2014a">{{cite journal
|display-authors = 6
|first1 = Chan-Kao |last1 = Chang
|first2 = Wing-Huen |last2 = Ip |author2-link=Ip Wing-huen
|first3 = Hsing-Wen |last3 = Lin
|first4 = Yu-Chi |last4 = Cheng
|first5 = Chow-Choong |last5 = Ngeow
|first6 = Ting-Chang |last6 = Yang
|first7 = Adam |last7 = Waszczak
|first8 = Shrinivas R. |last8 = Kulkarni
|first9 = David |last9 = Levitan
|first10 = Branimir |last10 = Sesar
|first11 = Russ |last11 = Laher
|first12 = Jason |last12 = Surace
|first13 = Thomas. A. |last13 = Prince
|date = June 2014
|title = 313 New Asteroid Rotation Periods from Palomar Transient Factory Observations
|journal = The Astrophysical Journal
|volume = 788
|issue = 1
|page = 21
|bibcode = 2014ApJ...788...17C
|doi = 10.1088/0004-637X/788/1/17
|arxiv = 1405.1144|s2cid = 51100134 }}</ref>

<ref name="Albers-2010">{{Cite journal
|display-authors = 6
|first1 = Kenda |last1 = Albers
|first2 = Katherine |last2 = Kragh
|first3 = Adam |last3 = Monnier
|first4 = Zachary |last4 = Pligge
|first5 = Kellen |last5 = Stolze
|first6 = Josh |last6 = West
|first7 = Arnold |last7 = Yim
|first8 = Richard |last8 = Ditteon
|date = October 2010
|title = Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2009 October thru 2010 April
|journal = The Minor Planet Bulletin
|volume = 37
|issue = 4
|pages = 152–158
|issn = 1052-8091
|bibcode = 2010MPBu...37..152A}}</ref>

<ref name="Klinglesmith-2016b">{{Cite journal
|first1 = Daniel A. III |last1 = Klinglesmith
|first2 = Sebastian |last2 = Hendrickx
|first3 = Karl |last3 = Madden
|first4 = Samuel |last4 = Montgomery
|date = April 2016
|title = Lightcurves for Shape/Spin Models
|journal = The Minor Planet Bulletin
|volume = 43
|issue = 2
|pages = 123–128
|issn = 1052-8091
|bibcode = 2016MPBu...43..123K}}</ref>

<ref name="Waszczak-2015">{{cite journal
|display-authors = 6
|first1 = Adam |last1 = Waszczak
|first2 = Chan-Kao |last2 = Chang
|first3 = Eran O. |last3 = Ofek
|first4 = Russ |last4 = Laher
|first5 = Frank |last5 = Masci
|first6 = David |last6 = Levitan
|first7 = Jason |last7 = Surace
|first8 = Yu-Chi |last8 = Cheng
|first9 = Wing-Huen |last9 = Ip
|first10 = Daisuke |last10 = Kinoshita
|first11 = George |last11 = Helou
|first12 = Thomas A. |last12 = Prince
|first13 = Shrinivas |last13 = Kulkarni
|date = September 2015
|title = Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry
|journal = The Astronomical Journal
|volume = 150
|issue = 3
|page = 35
|bibcode = 2015AJ....150...75W
|doi = 10.1088/0004-6256/150/3/75
|arxiv = 1504.04041|s2cid = 8342929 }}</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|s2cid = 53493339 }}</ref>

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

== 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 }})
* [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
* [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
* {{AstDys|3640}}
* {{JPL small body}}
* {{JPL small body}}


{{Minor planets navigator|3639 Weidenschilling|number=3640|3641 Williams Bay}}
{{Minor planets navigator |3639 Weidenschilling |number=3640 |3641 Williams Bay}}
{{Small Solar System bodies}}
{{Small Solar System bodies}}
{{Authority control}}


{{DEFAULTSORT:Gostin}}
{{DEFAULTSORT:Gostin}}
[[Category:Main-belt asteroids|003640]]
[[Category:Flora asteroids|003640]]
[[Category:Numbered minor planets|003640]]
[[Category:Discoveries by Carolyn S. Shoemaker]]
[[Category:Discoveries by Carolyn S. Shoemaker]]
[[Category:Discoveries by Eugene Merle Shoemaker]]
[[Category:Discoveries by Eugene Merle Shoemaker]]
[[Category:Minor planets named for people]]
[[Category:Named minor planets]]
[[Category:Named minor planets]]
[[Category:S-type asteroids (SMASS)|003640]]
[[Category:S-type asteroids (SMASS)|003640]]
[[Category:Astronomical objects discovered in 1985|19851011]]
[[Category:Astronomical objects discovered in 1985|19851011]]


{{Beltasteroid-stub}}

Latest revision as of 15:29, 23 December 2023

3640 Gostin
Discovery [1]
Discovered byC. Shoemaker
E. Shoemaker
Discovery sitePalomar Obs.
Discovery date11 October 1985
Designations
(3640) Gostin
Named after
Victor Gostin [1]
(Australian geologist)
1985 TR3 · 1955 SS
1960 CB · 1970 CS
1972 VJ1
main-belt [1][2] · (inner)
Flora [3][4]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc61.63 yr (22,511 d)
Aphelion2.4175 AU
Perihelion2.0311 AU
2.2243 AU
Eccentricity0.0869
3.32 yr (1,212 d)
224.62°
0° 17m 49.56s / day
Inclination4.3118°
289.19°
155.59°
Physical characteristics
7.148±0.088 km[5]
7.613±0.096 km[6]
8.58 km (calculated)[3]
3.26±0.05 h[7]
3.263±0.0009 h[8]
3.263±0.003 h[9]
3.2641±0.0005 h[10]
0.2127±0.0446[6]
0.239±0.036[5]
0.24 (assumed)[3]
SMASS = S [2][3]
12.26±0.14 (R)[7]
12.398±0.001 (R)[8]
12.5[2][3]
12.62±0.20[11]
12.9[6]

3640 Gostin, provisional designation 1985 TR3, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers (5 miles) in diameter. It was discovered on 11 October 1985, by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory in California.[1] The S-type asteroid has a rotation period of 3.26 hours.[3] It was named for Australian geologist Victor Gostin.[1]

Orbit and classification

[edit]

Gostin is a member of the Gondolatsch-cluster within the Flora family (402),[3][4] a giant asteroid family and the largest family of stony asteroids in the main-belt,[12]

It orbits the Sun in the inner main-belt at a distance of 2.0–2.4 AU once every 3 years and 4 months (1,212 days; semi-major axis of 2.22 AU). Its orbit has an eccentricity of 0.09 and an inclination of 4° with respect to the ecliptic.[2] The body's observation arc begins with its first observation as 1955 SS at the Goethe Link Observatory in September 1955, or 30 years prior to its official discovery observation at Palomar.[1]

Physical characteristics

[edit]

In the SMASS classification, Gostin is a common, stony S-type asteroid.[2]

Rotation period

[edit]

In March 2010, a rotational lightcurve of Gostin was obtained from photometric observations at the Oakley Southern Sky Observatory. Lightcurve analysis gave a well-defined rotation period of 3.2641 hours with a brightness variation of 0.40 magnitude (U=3).[10] Concurring lightcurves were also obtained at the Palomar Transient Factory and at the Etscorn Campus Observatory (U=3/2/3).[3][7][8][9]

Diameter and albedo

[edit]

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Gostin measures 7.148 and 7.613 kilometers in diameter and its surface has an albedo of 0.239 and 0.2127, respectively.[5][6] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the parent body of the Flora family – and calculates a diameter of 8.58 kilometers based on an absolute magnitude of 12.5.[3]

Naming

[edit]

This minor planet was named by the discoverers after Australian geologist Victor Gostin (born 1940) of the University of Adelaide, who in the 1980s discovered the ejecta layer from the Acraman bolide impact at a distance of 300 kilometers from the impact site, within Ediacaran sedimentary rocks of the Flinders Ranges, South Australia, which enabled the impact to be dated at ~580 Ma.[1][13] The official naming citation was published by the Minor Planet Center on 2 February 1988 (M.P.C. 12808).[14]

References

[edit]
  1. ^ a b c d e f g "3640 Gostin (1985 TR3)". Minor Planet Center. Retrieved 15 May 2018.
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