1602 Indiana

Indiana is a member of the Flora family, a large collisional group of stony S-type asteroids in the inner main-belt. It orbits the Sun at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,229 days). Its orbit has an eccentricity of 0.10 and an inclination of 4° with respect to the ecliptic. Indiana was first identified as {{mp|1943 DJ}} at Turku Observatory in Finland, extending the body's observation arc by 7 years prior to its official discovery observation.

Three rotational lightcurves of Indiana were obtained from photometric observations taken by astronomer Michael Pietschnig, Gary Vander Haagen and Michael Fleenor in Spring 2007. The lightcurve analysis gave a rotation period between 2.57 and 2.61 hours with a change in brightness of 0.12 to 0.19 magnitude, respectively ({{small|U=2/3/3-}}).{{efn|name=LCDB-Pietschnig-2011}}

According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Indiana measures between 7.97 and 8.52 kilometers in diameter, and its surface has an albedo between 0.250 and 0.297. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of this family – and calculates a diameter of 8.62 kilometers with an absolute magnitude of 12.49.

This minor planet was named for the U.S. state of Indiana and for Indiana University with its astronomy department, which is the parent institution of the discovering Goethe Link Observatory.

Originally the discovery was credited to Beryl H. Potter (1900–1985), after whom the asteroid 1729 Beryl is named. She was research assistant at the Indiana University, who participated in the program of minor planet observations from 1949 to 1966. During this period, she analysed nearly 6,300 photographic plates, measuring the positions of minor planets and reporting lost asteroids to IAU's Minor Planet Circulars (MPCs) for publication. However, according to Frank K. Edmondson (1912–2008), chairman of the Astronomy Department of Indiana University (also see 1761 Edmondson), there were several assistants involved in blinking the photographic plates during the first years of the program. The discovery was therefore credited to Indiana University, instead. The official {{MoMP|1602|naming citation}} was published by the Minor Planet Center in January 1955 ({{small|M.P.C. 1171}}).

{{notelist|refs=

{{efn|name=LCDB-Pietschnig-2011|1=Pietschnig (2011) web: rotation period {{val|2.57|0.06}} with a brightness amplitude of {{val|0.19}} in magnitude. See {{URL|1=http://web.utanet.at/pietschm/|2=Pietschnig, M. (2011)}}. Summary figures at {{URL|1=http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1602%7CIndiana|2=Asteroid Lightcurve Database for (1602) Indiana}}}}

}}

{{reflist|30em|refs=

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|type = 2017-06-05 last obs.

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|archive-url = https://web.archive.org/web/20200820115057/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001602

|url-status = dead

|archive-date = 20 August 2020

|publisher = Jet Propulsion Laboratory

|accessdate = 30 June 2017}}

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• [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/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
• {{AstDys|1602}}
• {{JPL small body}}

{{Minor planets navigator |1601 Patry |number=1602 |1603 Neva}}

{{Small Solar System bodies}}

{{Authority control}}

{{DEFAULTSORT:Indiana}}

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Category:Named minor planets

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