2732 Witt
{{Use dmy dates|date=April 2018}}
{{Infobox planet
| minorplanet = yes
| name = 2732 Witt
| background = #D6D6D6
| image =
| image_size =
| caption =
| discoverer = M. F. Wolf
| discovery_site = Heidelberg Obs.
| discovered = 19 March 1926
| mpc_name = (2732) Witt
| alt_names = 1926 FG{{·}}1935 DF
{{mp|1965 UP|1}}{{·}}1969 RD
{{mp|1978 PQ|1}}{{·}}{{mp|1979 YL|6}}
| pronounced =
| named_after = Carl Gustav Witt
{{small|(German astronomer)}}
| mp_category = {{nowrap|main-belt {{·}}{{small|(middle)}}}}
Witt
| epoch = 23 March 2018 (JD 2458200.5)
| uncertainty = 0
| observation_arc = 92.02 yr (33,612 d)
| aphelion = 2.8250 AU
| perihelion = 2.6961 AU
| semimajor = 2.7606 AU
| eccentricity = 0.0234
| period = 4.59 yr (1,675 d)
| mean_anomaly = 129.05°
| mean_motion = {{Deg2DMS|0.2149|sup=ms}} / day
| inclination = 6.4925°
| asc_node = 145.08°
| arg_peri = 276.05°
| mean_diameter = {{val|11.001|0.291|ul=km}}
| rotation =
| albedo = {{val|0.305|0.022}}
| spectral_type = SMASS {{=}} A
}}
2732 Witt, provisional designation {{mp|1926 FG}}, is a bright asteroid and namesake of the Witt family located in the central regions of the asteroid belt, approximately {{convert|11|km|mi|abbr=off|sigfig=1|sp=us}} in diameter. It was discovered on 19 March 1926, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in Heidelberg, Germany. The unusual A-type asteroid was named after astronomer Carl Gustav Witt.
Orbit and classification
Witt the parent body and namesake of the Witt family ({{small|535}}), a large family of stony asteroids with more than 1,600 known members.
It orbits the Sun in the central main-belt at a distance of 2.7–2.8 AU once every 4 years and 7 months (1,675 days; semi-major axis of 2.76 AU). Its orbit has an eccentricity of 0.02 and an inclination of 6° with respect to the ecliptic. The body's observation arc begins at Heidelberg in April 1926, two week after its official discovery observation.
Physical characteristics
In the SMASS classification, Witt is an uncommon A-type asteroid, while the overall spectral type for members of the Witt family is that of an S-type.{{rp|23}}
= Diameter and albedo =
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Witt measures 11.001 kilometers in diameter and its surface has a high albedo of 0.305.
= Rotation period =
As of 2018, no rotational lightcurve of Witt has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown.
Naming
This minor planet was named by Brian G. Marsden after Carl Gustav Witt (1866–1946), a German astronomer at the Berlin Observatory and a discoverer of minor planets himself, best known for the discovery of the near-Earth asteroid 433 Eros. The official naming citation was published by the Minor Planet Center on 22 September 1983 ({{small|M.P.C. 8153}}).
References
{{reflist|30em|refs=
|type = 2018-03-27 last obs.
|title = JPL Small-Body Database Browser: 2732 Witt (1926 FG)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002732
|publisher = Jet Propulsion Laboratory
|access-date = 18 April 2018}}
|title = 2732 Witt (1926 FG)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=2732
|access-date = 18 April 2018}}
|title = MPC/MPO/MPS Archive
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
|access-date = 18 April 2018}}
|title = Asteroid 2732 Witt – Nesvorny HCM Asteroid Families V3.0
|work = Small Bodies Data Ferret
|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=2732+Witt#Asteroid%202732%20WittEAR-A-VARGBDET-5-NESVORNYFAM-V3.0
|access-date = 26 October 2019}}
|first1 = D. |last1 = Nesvorný
|first2 = M. |last2 = Broz
|first3 = V. |last3 = Carruba
|date = December 2014
|chapter = Identification and Dynamical Properties of Asteroid Families
|title = Asteroids IV
|pages = 297–321
|bibcode = 2015aste.book..297N
|doi = 10.2458/azu_uapress_9780816532131-ch016
|arxiv = 1502.01628
|isbn = 9780816532131
|s2cid = 119280014
}}
|display-authors = 6
|first1 = Joseph R. |last1 = Masiero
|first2 = A. K. |last2 = Mainzer
|first3 = T. |last3 = Grav
|first4 = J. M. |last4 = Bauer
|first5 = R. M. |last5 = Cutri
|first6 = J. |last6 = Dailey
|first7 = P. R. M. |last7 = Eisenhardt
|first8 = R. S. |last8 = McMillan
|first9 = T. B. |last9 = Spahr
|first10 = M. F. |last10 = Skrutskie
|first11 = D. |last11 = Tholen
|first12 = R. G. |last12 = Walker
|first13 = E. L. |last13 = Wright
|first14 = E. |last14 = DeBaun
|first15 = D. |last15 = Elsbury
|first16 = T. IV |last16 = Gautier
|first17 = S. |last17 = Gomillion
|first18 = A. |last18 = Wilkins
|date = November 2011
|title = Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters
|journal = The Astrophysical Journal
|volume = 741
|issue = 2
|page = 20
|bibcode = 2011ApJ...741...68M
|doi = 10.1088/0004-637X/741/2/68
|arxiv = 1109.4096
|s2cid = 118745497 }}
}}
External links
- [https://www.researchgate.net/publication/253918348_2732_Witt_CCD_Spectrum 2732 Witt CCD Spectrum], Schelte Bus and Richard Binzel (SMASS), 2004
- [https://books.google.com/books?id=_LZ8AwAAQBAJ&pg=PA42 2732 Witt], Dwarf Planets and Asteroids: Minor Bodies of the Solar System (p. 42)
- [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 Dictionary of Minor Planet Names], Google books
- [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
- {{AstDys|2732}}
- {{JPL small body}}
{{Minor planets navigator |2731 Cucula |number=2732 |2733 Hamina }}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Witt}}