Astronomy:2730 Barks
| Discovery [1] | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 30 August 1981 |
| Designations | |
| (2730) Barks | |
| Named after | Carl Barks (American cartoonist)[2] |
| 1981 QH · 1935 FQ 1935 HC · 1963 SP 1972 TJ5 · 1975 EM1 | |
| Minor planet category | main-belt · (middle) |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 62.77 yr (22,925 days) |
| |{{{apsis}}}|helion}} | 3.0741 AU |
| |{{{apsis}}}|helion}} | 2.3683 AU |
| 2.7212 AU | |
| Eccentricity | 0.1297 |
| Orbital period | 4.49 yr (1,640 days) |
| Mean anomaly | 70.617° |
| Mean motion | 0° 13m 10.56s / day |
| Inclination | 6.4294° |
| Longitude of ascending node | 4.6736° |
| 273.09° | |
| Physical characteristics | |
| Dimensions | 9.87±0.82 km[3] 14.97±0.50 km[4] 15.830±0.120[5][6] 24.30 km (calculated)[7] |
| Rotation period | 6.084±0.002 h[8] 6.087±0.0016 h[9] |
| Geometric albedo | 0.057 (assumed)[7] 0.162±0.020}[6][5] 0.196±0.015[4] 0.415±0.067[3] |
| SMASS = C [1] · C [7] | |
| Absolute magnitude (H) | 11.31±0.87[10] · 11.6[3][4][6] · 11.643±0.003 (R)[9] · 11.7[1] · 11.8[7] |
2730 Barks, provisional designation 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.[11] The asteroid was named after comic-book illustrator Carl Barks.[2]
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.[1]
It was first identified as 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.[11]
Physical characteristics
In the SMASS taxonomy, Barks is characterized as a carbonaceous C-type asteroid.[1]
Rotation period
In August 2012, a rotational lightcurve of Barks was obtained from photometric observations by astronomers at the Oakley Southern Sky Observatory (E09) in Australia. Lightcurve analysis gave a well-defined rotation period of 6.084 hours with a brightness variation of 0.26 magnitude ({{{1}}}).[8] 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 ({{{1}}}).[9]
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.[3][4][5][6]
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.[7]
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".[2]
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 (M.P.C. 7621).[12] A week later, Thomas informed Barks by mail about his initiative.[13]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "JPL Small-Body Database Browser: 2730 Barks (1981 QH)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002730.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(2730) Barks". Dictionary of Minor Planet Names – (2730) Barks. Springer Berlin Heidelberg. p. 224. doi:10.1007/978-3-540-29925-7_2731. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 3.2 3.3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C. et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. doi:10.1088/2041-8205/759/1/L8. Bibcode: 2012ApJ...759L...8M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M. Retrieved 18 June 2017.
- ↑ 4.0 4.1 4.2 4.3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. doi:10.1093/pasj/63.5.1117. Bibcode: 2011PASJ...63.1117U. (online, AcuA catalog p. 153)
- ↑ 5.0 5.1 5.2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J. et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal 741 (2): 20. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 18 June 2017.
- ↑ 6.0 6.1 6.2 6.3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D. et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M.
- ↑ 7.0 7.1 7.2 7.3 7.4 "LCDB Data for (2730) Barks". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=2730%7CBarks.
- ↑ 8.0 8.1 Simpson, Gary; Chong, Elena; Gerhardt, Michael; Gorsky, Sean; Klaasse, Matthew; Kodalen, Brian et al. (July 2013). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2012 August - October". The Minor Planet Bulletin 40 (3): 146–151. ISSN 1052-8091. Bibcode: 2013MPBu...40..146S. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013MPBu...40..146S. Retrieved 18 June 2017.
- ↑ 9.0 9.1 9.2 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. doi:10.1088/0004-6256/150/3/75. Bibcode: 2015AJ....150...75W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W. Retrieved 18 June 2017.
- ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus 261: 34–47. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 18 June 2017.
- ↑ 11.0 11.1 "2730 Barks (1981 QH)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2730.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
- ↑ Template:Inducks comic
External links
- Helnwein Talks with Carl Barks, 11 July 1992
- Asteroid Lightcurve Database (LCDB), query form (info )
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 2730 Barks at AstDyS-2, Asteroids—Dynamic Site
- 2730 Barks at the JPL Small-Body Database
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