View source for 2661 Bydžovský

{{Short description|Main-belt asteroid}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet     = yes
| name            = 2661 Bydžovský
| background      = #D6D6D6
| image           =
| image_size      =
| caption         =
| discovery_ref   = &thinsp;<ref name="jpldata" />
| discovered      = 23 March 1982
| discoverer      = [[Zdeňka Vávrová|Z. Vávrová]]
| discovery_site  = [[Kleť Observatory|Kleť Obs.]]
| mpc_name        = (2661) Bydžovský
| alt_names       = {{mp|1982 FC|1}}{{·}}1950 EE<br />{{mp|1969 TG|4}}{{·}}1971 DO<br />{{mp|1974 SU|2}}{{·}}{{mp|1979 RM|1}}
| named_after     = [[Bohumil Bydžovský]]<br />{{small|(Czech academician)}}<ref name="springer" />
| mp_category     = [[main-belt]]{{·}}{{small|([[Kirkwood gap|outer]])}}
| orbit_ref       = &thinsp;<ref name="jpldata" />
| epoch           = 4 September 2017 ([[Julian day|JD]] 2458000.5)
| uncertainty     = 0
| observation_arc = 66.89 yr (24,432 days)
| aphelion        = 3.3104 [[Astronomical unit|AU]]
| perihelion      = 2.7421 AU
| semimajor       = 3.0262 AU
| eccentricity    = 0.0939
| period          = 5.26 [[Julian year (astronomy)|yr]] (1,923 days)
| mean_anomaly    = 358.62[[Degree (angle)|°]]
| mean_motion     = {{Deg2DMS|0.1872|sup=ms}} / day
| inclination     = 9.9324°
| asc_node        = 321.14°
| arg_peri        = 115.55°
| dimensions      = {{val|22|9}} km {{small|(calculated)}}<ref name="h" /><br />{{nowrap|{{val|30|2}} km {{small|(est. at [[astronomical albedo|0.06]])}}<ref name="h" />}}
| rotation        =
| albedo          =
| spectral_type   =
| abs_magnitude   = 11.4<ref name="jpldata" />
}}
'''2661 Bydžovský''', provisional designation {{mp|1982 FC|1}}, is an [[asteroid]] from the outer region of the [[asteroid belt]], approximately 30 kilometers in diameter. It was discovered on 23 March 1982, by Czech astronomer [[Zdeňka Vávrová]] at the South Bohemian [[Kleť Observatory]] in the Czech Republic.<ref name="MPC-Bydzovsky" /> The asteroid was named after mathematician [[Bohumil Bydžovský]].<ref name="springer" />
== Orbit and classification ==
''Bydžovský'' orbits the Sun in the [[Kirkwood gap|outer]] main-belt at a distance of 2.7–3.3&nbsp;[[Astronomical unit|AU]] once every 5 years and 3 months (1,923 days). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.09 and an [[orbital inclination|inclination]] of 10[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" /> It was first identified as {{mp|1950 EE}} at [[Heidelberg Observatory]] in 1950, extending the body's [[observation arc]] by 32 years prior to its discovery.<ref name="MPC-Bydzovsky" />
== Physical characteristics ==
As of 2016, ''Bydžovský''{{'}}s size, [[astronomical albedo|albedo]], composition and [[rotation period]] remain unknown. Based on its [[Magnitude (astronomy)|absolute magnitude]] of 11.4, its diameter is estimated to measure between 13 and 32 kilometers, assuming an albedo in the range of 0.05 to 0.25.<ref name="h" /> Since most asteroids in the outer main-belt are of a [[C-type asteroid|carbonaceous]] rather than of a [[S-type asteroids|silicaceous]] composition, with low albedos, typically closer to 0.05 than to 0.25, the asteroid's diameter might be on the upper end of NASA's published conversion table, as the lower the reflectivity (albedo), the larger the body's diameter for a given absolute magnitude.<ref name="h" />
== Naming ==
This [[minor planet]] was named in honour of mathematician [[Bohumil Bydžovský]] (1880–1969), chancellor of the [[Charles University in Prague]]. He was born in southern Bohemia and became the most eminent citizen of the Czech town [[Veselí nad Lužnicí|Veselí]] on the [[Lužnice (river)|Lužnice river]], after which the minor planets [[2321 Lužnice]] and [[2599 Veselí]] were named, respectively.<ref name="springer" /><ref name="springer-Veseli" /><ref name="springer-Luznice" /> The official naming citation was published by the [[Minor Planet Center]] on 6 February 1993 ({{small|[[Minor Planet Circulars|M.P.C.]] 21607}}).<ref name="MPC-Circulars-Archive" />
== References ==
{{reflist|30em|refs=
<ref name="jpldata">{{cite web
|type       = 2017-01-27 last obs.
|title      = JPL Small-Body Database Browser: 2661 Bydzovsky (1982 FC1)
|url        = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002661
|publisher  = [[Jet Propulsion Laboratory]]
|accessdate = 14 June 2017}}</ref>
<ref name="springer">{{cite book
|title      = Dictionary of Minor Planet Names – (2661) Bydžovský
|last       = Schmadel | first = Lutz D.
|publisher  = [[Springer Berlin Heidelberg]]
|page       = 218
|date       = 2007
|isbn       = 978-3-540-00238-3
|doi       = 10.1007/978-3-540-29925-7_2662 |chapter       = (2661) Bydžovský }}</ref>
<ref name="MPC-Bydzovsky">{{cite web
|title      = 2661 Bydzovsky (1982 FC1)
|work       = Minor Planet Center
|url        = https://www.minorplanetcenter.net/db_search/show_object?object_id=2661
|accessdate = 6 December 2016}}</ref>
<ref name="MPC-Circulars-Archive">{{cite web
|title      = MPC/MPO/MPS Archive
|work       = Minor Planet Center
|url        = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
|accessdate = 6 December 2016}}</ref>
<ref name="springer-Luznice">{{cite book
|title      = Dictionary of Minor Planet Names – (2321) Lužnice
|last       = Schmadel | first = Lutz D.
|publisher  = Springer Berlin Heidelberg
|page       = 189
|date       = 2007
|isbn       = 978-3-540-00238-3
|doi       = 10.1007/978-3-540-29925-7_2322 |chapter       = (2321) Lužnice }}</ref>
<ref name="springer-Veseli">{{cite book
|title      = Dictionary of Minor Planet Names – (2599) Veselí
|last       = Schmadel | first = Lutz D.
|publisher  = Springer Berlin Heidelberg
|page       = 212
|date       = 2007
|isbn       = 978-3-540-00238-3
|doi       = 10.1007/978-3-540-29925-7_2600 |chapter       = (2599) Veselí }}</ref>
<ref name="h">{{cite web
|title      = Absolute Magnitude (H)
|publisher  = NASA/JPL
|url        = http://neo.jpl.nasa.gov/glossary/h.html
|archive-url = https://web.archive.org/web/20010302182040/http://neo.jpl.nasa.gov/glossary/h.html
|url-status = dead
|archive-date = 2001-03-02
|accessdate = 2014-06-24}}</ref>
}} <!-- end of reflist -->
== 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|2661}}
* {{JPL small body}}
{{Minor planets navigator |2660 Wasserman |number=2661 |2662 Kandinsky}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Bydzovsky}}
[[Category:Background asteroids|002661]]
[[Category:Discoveries by Zdeňka Vávrová]]
[[Category:Named minor planets]]
[[Category:Astronomical objects discovered in 1982|19820323]]