2730 Barks
{{Short description|Carbonaceous asteroid in the asteroid belt}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet = yes
| name = 2730 Barks
| background = #D6D6D6
| discovered = 30 August 1981
| discoverer = E. Bowell
| discovery_site = Anderson Mesa Stn.
| mpc_name = (2730) Barks
| alt_names = 1981 QH{{·}}1935 FQ
1935 HC{{·}}1963 SP
{{mp|1972 TJ|5}}{{·}}{{mp|1975 EM|1}}
| named_after = Carl Barks
{{small|(American cartoonist)}}
| mp_category = main-belt{{·}}{{small|(middle)}}
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 62.77 yr (22,925 days)
| aphelion = 3.0741 AU
| perihelion = 2.3683 AU
| semimajor = 2.7212 AU
| eccentricity = 0.1297
| period = 4.49 yr (1,640 days)
| mean_anomaly = 70.617°
| mean_motion = {{Deg2DMS|0.2196|sup=ms}} / day
| inclination = 6.4294°
| asc_node = 4.6736°
| arg_peri = 273.09°
| dimensions = {{val|9.87|0.82}} km
{{val|14.97|0.50}} km
{{val|15.830|0.120}}
24.30 km {{small|(calculated)}}
| rotation = {{val|6.084|0.002}} h
{{val|6.087|0.0016}} h
| albedo = 0.057 {{small|(assumed)}}
{{val|0.162|0.020}}}
{{val|0.196|0.015}}
{{val|0.415|0.067}}
| spectral_type = SMASS = C {{·}}C
| abs_magnitude = {{val|11.31|0.87}}{{·}}11.6{{·}}{{val|11.643|0.003}} {{small|(R)}}{{·}}11.7{{·}}11.8
}}
2730 Barks, provisional designation {{mp|1981 QH}}, is a carbonaceous asteroid from the central regions of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 30 August 1981, by American astronomer Edward Bowell at Anderson Mesa Station, Arizona, United States. The asteroid was named after comic-book illustrator Carl Barks.
Orbit and classification
Barks orbits the Sun in the central main-belt at a distance of 2.4–3.1 AU once every 4 years and 6 months (1,640 days). Its orbit has an eccentricity of 0.13 and an inclination of 6° with respect to the ecliptic.
It was first identified as {{mp|1935 FQ}} at Johannesburg Observatory in 1935. The body's observation arc begins with a precovery taken at Palomar Observatory in 1954, or 27 years prior to its official discovery observation at Anderson Mesa.
Physical characteristics
In the SMASS taxonomy, Barks is characterized as a carbonaceous C-type asteroid.
= Rotation period =
In August 2012, a rotational lightcurve of Barks was obtained from photometric observations by astronomers at the Oakley Southern Sky Observatory ({{small|E09}}) in Australia. Lightcurve analysis gave a well-defined rotation period of 6.084 hours with a brightness variation of 0.26 magnitude ({{small|U=3}}). This concurs with observations taken at the Palomar Transient Factory in January 2011, which gave a period of 6.087 hours and an amplitude of 0.28 magnitude ({{small|U=2}}).
= Diameter and albedo =
According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Barks measures between 9.87 and 15.830 kilometers in diameter and its surface has an albedo between 0.162 and 0.415.
The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 24.30 kilometers with an absolute magnitude of 11.8.
Naming
This minor planet was named for American cartoonist Carl Barks (1901–2000), best known for the fictional character Scrooge McDuck he created while working at Walt Disney in the late 1940s. In many of his stories, he described space exploration and adventure. Barks was one of the first to use the term "rubble pile asteroid".
Peter Thomas, an assistant of Cornell University, proposed the idea of naming an asteroid after Barks. The approved naming citation was published by the Minor Planet Center on 28 January 1983 ({{small|M.P.C. 7621}}). A week later, Thomas informed Barks by mail about his initiative.{{Inducks comic|Qus/USCA++2VH|Peter Thomas, Carl Barks and Edward Bowell's correspondence about the naming of asteroid (2730) Barks}}
References
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|publisher = Jet Propulsion Laboratory
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|title = 2730 Barks (1981 QH)
|work = Minor Planet Center
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External links
- [http://www.helnwein.com/news/news_update/article_356-Helnwein-talks-with-Carl-Barks-Helnwein-talks-with-Carl-Barks;jsessionid=5D3F99352732337AC32D0443F79A4FAD Helnwein Talks with Carl Barks], 11 July 1992
- [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|2730}}
- {{JPL small body}}
{{Minor planets navigator |2729 Urumqi |number=2730 |2731 Cucula}}
{{Small Solar System bodies}}
{{Authority control}}
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