51829 Williemccool

Williemccool is a member of the Vesta family ({{small|401}}). Vestian asteroids have a composition akin to cumulate eucrites (HED meteorites) and are thought to have originated deep within 4 Vesta's crust, possibly from the Rheasilvia crater, a large impact crater on its southern hemisphere near the South pole, formed as a result of a subcatastrophic collision. Vesta is the main belt's second-largest and second-most-massive body after Ceres.

It orbits the Sun in the inner main-belt at a distance of 2.2–2.4 AU once every 3 years and 5 months (1,256 days; semi-major axis of 2.28 AU). Its orbit has an eccentricity of 0.05 and an inclination of 8° with respect to the ecliptic.

The body's observation arc begins with a precovery taken by Spacewatch at Kitt Peak Observatory in December 1995, more than 6 years prior to its official discovery observation at Palomar.

As of 2017, no rotational lightcurve of Williemccool has been obtained from photometric observations. The asteroid's rotation period, poles and shape remain unknown.

Williemccool has not been observed by any of the space-based surveys such as the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, IRAS or the Akari satellite. A generic magnitude-to-diameter conversion gives a diameter of 1.9 kilometers based on an absolute magnitude of 15.2 and an assumed albedo 0.40, typical for members of the Vesta family.

This minor planet was named in memory of William Cameron McCool (1961–2003), an American astronaut and pilot of STS-107, who died in the Space Shuttle Columbia disaster on 1 February 2003. The approved naming citation was published by the Minor Planet Center on 6 August 2003 ({{small|M.P.C. 49283}}).

The following asteroids were named in memory of the other six Columbia crew members: 51823 Rickhusband, 51824 Mikeanderson, 51825 Davidbrown, 51826 Kalpanachawla, 51827 Laurelclark and 51828 Ilanramon.

{{reflist|30em|refs=

{{cite web

|type = 2017-03-26 last obs.

|title = JPL Small-Body Database Browser: 51829 Williemccool (2001 OD41)

|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2051829

|publisher = Jet Propulsion Laboratory

|access-date = 29 December 2017}}

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{{cite web

|title = 51829 Williemccool (2001 OD41)

|work = Minor Planet Center

|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=51829

|access-date = 29 December 2017}}

{{cite web

|title = MPC/MPO/MPS Archive

|work = Minor Planet Center

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{{cite web

|title = Asteroid 51829 Williemccool – Nesvorny HCM Asteroid Families V3.0

|work = Small Bodies Data Ferret

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|bibcode = 2015aste.book..297N

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|arxiv = 1502.01628

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{{cite journal

|first1 = Michael S. |last1 = Kelley

|first2 = Faith |last2 = Vilas

|first3 = Michael J. |last3 = Gaffey

|first4 = Paul A. |last4 = Abell

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{{cite web

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{{cite web

|title = LCDB Data for (51829) Williemccool

|publisher = Asteroid Lightcurve Database (LCDB)

|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=51829%7CWilliemccool

|access-date = 29 December 2017}}

}}

• [https://www.jpl.nasa.gov/releases/2003/columbia-tribute.cfm NASA JPL - Space Shuttle Columbia Tribute page] {{Webarchive|url=https://web.archive.org/web/20170622140846/https://www.jpl.nasa.gov/releases/2003/columbia-tribute.cfm |date=22 June 2017 }}
• [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/NumberedMPs050001.html Discovery Circumstances: Numbered Minor Planets (50001)-(55000)] – Minor Planet Center
• {{AstDys|51829}}
• {{JPL small body}}

{{Minor planets navigator |51828 Ilanramon |number=51829 | }}

{{Small Solar System bodies}}

{{Authority control}}

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Category:Named minor planets

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