1391 Carelia

Carelia is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun in the central main-belt at a distance of 2.1–3.0 AU once every 4 years and 1 month (1,485 days; semi-major axis of 2.55 AU). Its orbit has an eccentricity of 0.16 and an inclination of 8° with respect to the ecliptic. It was first observed at Heidelberg Observatory, extending the body's observation arc by 2 days prior to its official discovery observation at Turku.

This minor planet was named after the northeastern European region of Karelia, located between the Gulf of Finland and the Russian White Sea. The {{MoMP|1391|naming}} was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ({{small|H 126}}). Since the Winter War between the Soviet Union and Finland in 1939–40, most of the regions belongs now to Russia. A large part of Yrjö Väisälä's discoveries have names that are in some form or another related to that war about Karelia.

In the Tholen taxonomy, Carelia is a stony S-type asteroid, the most common type in the inner main-belt. The asteroid is also an S-type in the SDSS-based taxonomy.

In 2016, a rotational lightcurve of Carelia was published using modeled photometric data from the Lowell Photometric Database (LPD). Lightcurve analysis gave a rotation period of {{val|5.87822|0.00001}} hours ({{small|U=n.a.}}), as well as two spin axes at (21.0°, −79.0°) and (208.0°, −43.0°) in ecliptic coordinates (λ, β).

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Carelia measures 11.079 and 11.570 kilometers in diameter and its surface has an albedo of 0.1972 and 0.214, respectively. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 11.46 kilometers based on an absolute magnitude of 12.07.

{{reflist|30em|refs=

{{cite web

|type = 2020-02-03 last obs.

|title = JPL Small-Body Database Browser: 1391 Carelia (1936 DA)

|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001391

|publisher = Jet Propulsion Laboratory

|accessdate = 16 March 2020}}

{{cite book

|title = Dictionary of Minor Planet Names

|last = Schmadel | first = Lutz D.

|publisher = Springer Berlin Heidelberg

|chapter = (1391) Carelia

|page = 112

|date = 2007

|isbn = 978-3-540-00238-3

|doi = 10.1007/978-3-540-29925-7_1392}}

{{cite web

|title = 1391 Carelia (1936 DA)

|work = Minor Planet Center

|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1391

|accessdate = 3 April 2017}}

{{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

|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M

|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

|access-date= 3 April 2017}}

{{cite web

|title = LCDB Data for (1391) Carelia

|publisher = Asteroid Lightcurve Database (LCDB)

|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1391

|accessdate = 3 April 2017}}

{{cite journal

|first1 = J. |last1 = Durech

|first2 = J. |last2 = Hanus

|first3 = D. |last3 = Oszkiewicz

|first4 = R. |last4 = Vanco

|date = March 2016

|title = Asteroid models from the Lowell photometric database

|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016A&A...587A..48D

|journal = Astronomy and Astrophysics

|volume = 587

|page = 6

|bibcode = 2016A&A...587A..48D

|doi = 10.1051/0004-6361/201527573

|arxiv = 1601.02909

|access-date= 3 April 2017}}

{{cite web

|title = Asteroid 1391 Carelia

|work = Small Bodies Data Ferret

|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1391+Carelia

|accessdate = 16 March 2020}}

{{cite web

|title = Asteroid 1391 Carelia – Proper Elements

|publisher = AstDyS-2, Asteroids – Dynamic Site

|url = https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1391

|access-date= 16 March 2020}}

{{Cite journal

|first1 = J. M. |last1 = Carvano

|first2 = P. H. |last2 = Hasselmann

|first3 = D. |last3 = Lazzaro

|first4 = T. |last4 = Mothé-Diniz

|date = February 2010

|title = SDSS-based taxonomic classification and orbital distribution of main belt asteroids

|url = https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_I0035_5_SDSSTAX_V1_1/data/sdsstax_ast_table.tab

|journal = Astronomy and Astrophysics

|volume = 510

|page = 12

|bibcode = 2010A&A...510A..43C

|doi = 10.1051/0004-6361/200913322

|access-date= 16 March 2020|doi-access= free

}} [https://sbn.psi.edu/pds/resource/sdsstax.html (PDS data set)]

}}

• [http://www.minorplanet.info/PHP/OneAsteroidInfo.php Lightcurve Database Query] (LCDB), at www.minorplanet.info
• [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] – Geneva Observatory, Raoul Behrend
• [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
• {{AstDys|1391}}
• {{JPL small body}}

{{Minor planets navigator |1390 Abastumani |number=1391 |1392 Pierre}}

{{Small Solar System bodies}}

{{Authority control}}

{{DEFAULTSORT:Carelia}}

001391

Category:Discoveries by Yrjö Väisälä

Category:Named minor planets

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