39741 Komm
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet = yes
| name = 39741 Komm
| background = #FA8072
| image =
| image_size =
| caption =
| discovered = 9 January 1997
| discoverer = R. Tucker
| discovery_site = {{nowrap|Goodricke–Pigott Obs.}}
| mpc_name = (39741) Komm
| alt_names = {{mp|1997 AT|6}}{{·}}{{mp|1999 LM|28}}
| pronounced =
| named_after = Rudolf Komm
{{small|(helioseismologist)}}
| mp_category = Mars crosser
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 20.15 yr (7,358 days)
| aphelion = 2.9461 AU
| perihelion = 1.4189 AU
| semimajor = 2.1825 AU
| eccentricity = 0.3499
| period = 3.22 yr (1,178 days)
| mean_anomaly = 175.16°
| mean_motion = {{Deg2DMS|0.3057|sup=ms}} / day
| inclination = 6.3383°
| asc_node = 225.71°
| arg_peri = 126.19°
| moid = 0.4267 AU
| dimensions = 2.15 km {{small|(calculated)}}
| rotation = {{val|5.95|0.01}} h
| albedo = 0.20 {{small|(assumed)}}
| spectral_type = S
}}
39741 Komm (provisional designation {{mp|1997 AT|6}}) is a stony asteroid and eccentric Mars-crosser from the innermost regions of the asteroid belt, approximately 2 kilometers in diameter. It was discovered on 9 January 1997, by American astronomer Roy Tucker at Goodricke-Pigott Observatory in Tucson, Arizona, United States. The asteroid was named for American helioseismologist Rudolf Komm.
Orbit and classification
Komm orbits the Sun in the inner main-belt at a distance of 1.4–2.9 AU once every 3 years and 3 months (1,178 days). Its orbit has an eccentricity of 0.35 and an inclination of 6° with respect to the ecliptic. As no precoveries were taken, the asteroid's observation arc begins with its official discovery observation.
Physical characteristics
= Rotation and shape =
In October 2009, the first and so far only rotational lightcurve of Komm was obtained by French amateur astronomer René Roy. It gave a well-defined rotation period of {{val|5.95|0.01}} hours with a high brightness variation of 0.83 magnitude, indicative of a non-spheroidal shape ({{small|U=3}}).
= Diameter and albedo =
The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 2.15 kilometers with an absolute magnitude of 15.7.
Naming
This minor planet was named after Rudolf Walter Komm (born 1957), an American helioseismologist, who contributed in the study of solar activity. The official naming citation was published by the Minor Planet Center on 6 August 2003 ({{small|M.P.C. 49283}}).
References
{{reflist|30em|refs=
|type = 2017-03-03 last obs.
|title = JPL Small-Body Database Browser: 39741 Komm (1997 AT6)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2039741
|publisher = Jet Propulsion Laboratory
|access-date = 28 June 2017}}
|title = Dictionary of Minor Planet Names – (39741) Komm, Addendum to Fifth Edition: 2003–2005
|last = Schmadel | first = Lutz D.
|publisher = Springer Berlin Heidelberg
|page = 206
|date = 2006
|isbn = 978-3-540-34361-5
|doi = 10.1007/978-3-540-34361-5_2433 |chapter = (39741) Komm [2.18, 0.35, 6.3] }}
|title = 39741 Komm (1997 AT6)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=39741
|access-date = 17 November 2016}}
|title = MPC/MPO/MPS Archive
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
|access-date = 17 November 2016}}
|title = Asteroids and comets rotation curves – (39741) Komm
|last = Behrend |first = Raoul
|publisher = Geneva Observatory
|url = http://obswww.unige.ch/~behrend/page5cou.html#039741
|access-date = 17 November 2016}}
|title = LCDB Data for (39741) Komm
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=39741%7CKomm
|access-date = 17 November 2016}}
}}
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/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
- {{AstDys|39741}}
- {{JPL small body}}
{{Minor planets navigator | |number=39741 |(39742) 1997 AQ7}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Komm}}