# 10988 Feinstein

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{{Short description|Asteroid}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
 | minorplanet     = yes
 | name            = 10988 Feinstein
 | background      = #D6D6D6
 | image           = 
 | image_size      = 
 | caption         = 
 | discovery_ref   = <ref name="jpldata" />
 | discoverer      = [Félix Aguilar Obs.](/source/F%C3%A9lix_Aguilar_Observatory)
 | discovery_site  = [Félix Aguilar Obs.](/source/F%C3%A9lix_Aguilar_Observatory)
 | discovered      = 28 July 1968
 | mpc_name        = (10988) Feinstein
 | alt_names       = 1968 OL{{·}}1992 NH
 | pronounced      = 
 | named_after     = [Alejandro Feinstein](/source/Alejandro_Feinstein)<br />{{small|(Argentine astronomer)}}<ref name="MPC-object" />
 | mp_category     = [main-belt](/source/main-belt){{·}}[Phocaea](/source/Phocaea_family)<ref name="lcdb" /><br />[background](/source/Background_asteroid)<ref name="AstDys-object" />
 | orbit_ref       = <ref name="jpldata" />
 | epoch           = 4 September 2017 ([JD](/source/Julian_day) 2458000.5)
 | uncertainty     = 0
 | observation_arc = 48.27 yr (17,630 days)
 | aphelion        = 2.8707 [AU](/source/Astronomical_unit)
 | perihelion      = 1.6887 AU
 | semimajor       = 2.2797 AU
 | eccentricity    = 0.2592
 | period          = 3.44 [yr](/source/Julian_year_(astronomy)) (1,257 days)
 | mean_anomaly    = 136.20[°](/source/Degree_(angle))
 | mean_motion     = {{Deg2DMS|0.2863|sup=ms}} / day
 | inclination     = 24.043°
 | asc_node        = 117.60°
 | arg_peri        = 127.38°
 | dimensions      = 3.43 km {{small|(calculated)}}<ref name="lcdb" />
 | rotation        = {{val|2.6723|0.0005}} [h](/source/Hour){{efn|name=lcdb-Pravec-2016}}
 | albedo          = 0.23 {{small|(assumed)}}<ref name="lcdb" />
 | spectral_type   = [S](/source/S-type_asteroid)<ref name="lcdb" /><ref name="Veres-2015" />
 | abs_magnitude   = {{val|14.09|0.16}}{{efn|name=lcdb-Pravec-2016}}{{·}}14.3<ref name="jpldata" />{{·}}14.54<ref name="lcdb" />{{·}}{{val|14.65|0.23}}<ref name="Veres-2015" />
}}

'''10988 Feinstein''' ([provisional designation](/source/Minor_planet_provisional_designation) '''{{mp|1968 OL}}''') is a stony Phocaea [asteroid](/source/asteroid) from the inner regions of the [asteroid belt](/source/asteroid_belt). Approximately 3.4 kilometers in diameter, it was discovered on 28 July 1968 by astronomers at the [Félix Aguilar Observatory](/source/F%C3%A9lix_Aguilar_Observatory) in El Leoncito, [Argentina](/source/Argentina). The asteroid was named after Argentine astronomer [Alejandro Feinstein](/source/Alejandro_Feinstein) in 2008.<ref name="MPC-object" />

== Orbit and classification ==
Dynamically, Feinstein is a member of the [Phocaea family](/source/Phocaea_family) ({{small|[701](/source/FIN_tbl)}}),<ref name="lcdb" /> a large inner-belt [asteroid family](/source/asteroid_family) of stony composition. However, no membership to any known family could be found when using the [Hierarchical Clustering Method](/source/Hierarchical_Clustering_Method_(asteroids)).<ref name="AstDys-object" />

Feinstein orbits the Sun in the [inner](/source/Kirkwood_gap) main-belt at a distance of 1.7–2.9&nbsp;[AU](/source/Astronomical_unit) once every 3 years and 5 months (1,257 days). Its orbit has an [eccentricity](/source/orbital_eccentricity) of 0.26 and an [inclination](/source/orbital_inclination) of 24[°](/source/Degree_(angle)) with respect to the [ecliptic](/source/ecliptic).<ref name="jpldata" /> The body's [observation arc](/source/observation_arc) begins at El Leoncito with its official discovery observation in 1968.<ref name="MPC-object" />

== Physical characteristics ==
Feinstein has been characterized as a common stony [S-type asteroid](/source/S-type_asteroid) by [PanSTARRS](/source/PanSTARRS) photometric survey,<ref name="Veres-2015" /> which agrees with the family's overall [spectral type](/source/Asteroid_spectral_type).<ref name="Nesvorny-2014" />{{rp|23}}

=== Rotation period ===
In May 2016, a rotational [lightcurve](/source/lightcurve) of Feinstein was obtained from photometric observations by Czech astronomer [Petr Pravec](/source/Petr_Pravec) at [Ondřejov Observatory](/source/Ond%C5%99ejov_Observatory). Lightcurve analysis gave a short [rotation period](/source/rotation_period) of 2.6723 hours with a brightness amplitude of 0.11 [magnitude](/source/Magnitude_(astronomy)) ({{small|[U=3-](/source/LCDB_quality_code)}}).{{efn|name=lcdb-Pravec-2016}}

=== Diameter and albedo ===
The ''Collaborative Asteroid Lightcurve Link'' assumes an [albedo](/source/Astronomical_albedo) of 0.23 – derived from [25&nbsp;Phocaea](/source/25%26nbsp%3BPhocaea), the Phocaea family's largest member and namesake – and calculates a mean-diameter of 3.43 kilometers based on an [absolute magnitude](/source/absolute_magnitude) of 14.54.<ref name="lcdb" />

== Naming ==
This [minor planet](/source/minor_planet) was named after Argentinian astronomer [Alejandro Feinstein](/source/Alejandro_Feinstein) (born 1928) at [La Plata Astronomical Observatory](/source/La_Plata_Astronomical_Observatory) in La Plata, and one of the co-founders of the Argentinian Astronomical Association ({{langx|es|Asociación Argentina de Astronomía}}).<ref name="MPC-object" /> The official naming citation was published by the [Minor Planet Center](/source/Minor_Planet_Center) on 20 May 2008 ({{small|[M.P.C.](/source/Minor_Planet_Circulars) 62929}}).<ref name="MPC-Circulars-Archive" />

== Notes ==
{{notelist|refs=

{{efn|name=lcdb-Pravec-2016|1=Pravec (2016) web: [http://www.asu.cas.cz/~asteroid/10988.png lightcurve plot of (10988) Feinstein]. Rotation period {{val|2.6723|0.0005}} hours with a brightness amplitude of {{val|0.11|0.01}} mag. Quality Code:
 3-. [http://www.asu.cas.cz/~ppravec/newres.txt Source data] from the [http://www.asu.cas.cz/~ppravec/ Ondrejov Asteroid Photometry Project]. Summary figures at [http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=10988%7CFeinstein Collaborative Asteroid Lightcurve Link (CALL)]}}

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

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

<ref name="jpldata">{{cite web
  |type       = 2016-11-03 last obs.
  |title      = JPL Small-Body Database Browser: 10988 Feinstein (1968 OL)
  |url        = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010988
  |publisher  = [Jet Propulsion Laboratory](/source/Jet_Propulsion_Laboratory)
  |accessdate = 12 September 2017}}</ref>

<ref name="MPC-object">{{cite web
  |title      = 10988 Feinstein (1968 OL)
  |work       = Minor Planet Center
  |url        = https://www.minorplanetcenter.net/db_search/show_object?object_id=10988
  |accessdate = 12 September 2017}}</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 = 12 September 2017}}</ref>

<ref name="AstDys-object">{{cite web
  |title      = Asteroid 10988 Feinstein – Proper Elements
  |publisher  = AstDyS-2, Asteroids – Dynamic Site
  |url        = https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=10988
  |access-date= 29 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 LCDB|number = 10988
  |accessdate = 12 September 2017}}</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 ==
* [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
* [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/NumberedMPs010001.html Discovery Circumstances: Numbered Minor Planets (10001)-(15000)] – Minor Planet Center
* {{AstDys|10988}}
* {{JPL small body}}

{{Minor planets navigator | |number=10988 |10989 Dolios}}
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Adapted from the Wikipedia article [10988 Feinstein](https://en.wikipedia.org/wiki/10988_Feinstein) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/10988_Feinstein?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.