{{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. | discovery_site = Félix Aguilar Obs. | discovered = 28 July 1968 | mpc_name = (10988) Feinstein | alt_names = 1968 OL{{·}}1992 NH | pronounced = | named_after = Alejandro Feinstein<br />{{small|(Argentine astronomer)}}<ref name="MPC-object" /> | mp_category = main-belt{{·}}Phocaea<ref name="lcdb" /><br />background<ref name="AstDys-object" /> | orbit_ref = <ref name="jpldata" /> | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 48.27 yr (17,630 days) | aphelion = 2.8707 AU | perihelion = 1.6887 AU | semimajor = 2.2797 AU | eccentricity = 0.2592 | period = 3.44 yr (1,257 days) | mean_anomaly = 136.20° | 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{{efn|name=lcdb-Pravec-2016}} | albedo = 0.23 {{small|(assumed)}}<ref name="lcdb" /> | spectral_type = S<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 '''{{mp|1968 OL}}''') is a stony Phocaea asteroid from the inner regions of the asteroid belt. Approximately 3.4 kilometers in diameter, it was discovered on 28 July 1968 by astronomers at the Félix Aguilar Observatory in El Leoncito, Argentina. The asteroid was named after Argentine astronomer Alejandro Feinstein in 2008.<ref name="MPC-object" />
== Orbit and classification == Dynamically, Feinstein is a member of the Phocaea family ({{small|701}}),<ref name="lcdb" /> a large inner-belt asteroid family of stony composition. However, no membership to any known family could be found when using the Hierarchical Clustering Method.<ref name="AstDys-object" />
Feinstein orbits the Sun in the inner main-belt at a distance of 1.7–2.9 AU once every 3 years and 5 months (1,257 days). Its orbit has an eccentricity of 0.26 and an inclination of 24° with respect to the ecliptic.<ref name="jpldata" /> The body's 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 by PanSTARRS photometric survey,<ref name="Veres-2015" /> which agrees with the family's overall spectral type.<ref name="Nesvorny-2014" />{{rp|23}}
=== Rotation period === In May 2016, a rotational lightcurve of Feinstein was obtained from photometric observations by Czech astronomer Petr Pravec at Ondřejov Observatory. Lightcurve analysis gave a short rotation period of 2.6723 hours with a brightness amplitude of 0.11 magnitude ({{small|U=3-}}).{{efn|name=lcdb-Pravec-2016}}
=== Diameter and albedo === The ''Collaborative Asteroid Lightcurve Link'' assumes an albedo of 0.23 – derived from 25 Phocaea, the Phocaea family's largest member and namesake – and calculates a mean-diameter of 3.43 kilometers based on an absolute magnitude of 14.54.<ref name="lcdb" />
== Naming == This minor planet was named after Argentinian astronomer Alejandro Feinstein (born 1928) at 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 on 20 May 2008 ({{small|M.P.C. 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 |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}}
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{{DEFAULTSORT:Feinstein}} 010988 010988 Category:Named minor planets 19680728