|Discovered by||Z. Vávrová|
|Discovery site||Kleť Observatory|
|Discovery date||23 March 1982|
|MPC designation||2661 Bydzovsky|
|1982 FC1 · 1950 EE
1969 TG4 · 1971 DO
1974 SU2 · 1979 RM1
|Orbital characteristics |
|Epoch 13 January 2016 (JD 2457400.5)|
|Uncertainty parameter 0|
|Observation arc||65.28 yr (23845 days)|
|Aphelion||3.3116 AU (495.41 Gm)|
|Perihelion||2.7412 AU (410.08 Gm)|
|3.0264 AU (452.74 Gm)|
|5.27 yr (1923.1 d)|
|0° 11m 13.92s / day|
|Earth MOID||1.77438 AU (265.443 Gm)|
|Jupiter MOID||1.91043 AU (285.796 Gm)|
|Jupiter Tisserand parameter||3.215|
|Dimensions||±9 km (calculated) 22|
2661 Bydžovský, provisional designation 1982 FC1, is an asteroid from the outer region of the asteroid belt, roughly 22 kilometers in diameter. It was discovered on 23 March 1982, by Czech female astronomer Zdeňka Vávrová at the South Bohemian Kleť Observatory in the Czech Republic.
The asteroid orbits the Sun at a distance of 2.7–3.3 AU once every 5 years and 3 months (1,923 days). Its orbit is tilted by 10 degrees to the plane of the ecliptic and shows an eccentricity of 0.09. Little is known about the asteroids size, composition, albedo and rotation, despite having a well-observed orbit with the lowest possible uncertainty – a condition code of 0 – and an observation arc, that spans over a period of more than 60 years.
Based on its absolute magnitude of 11.4, its diameter could be anywhere between 13 and 32 kilometers, assuming an albedo in the range of 0.05 to 0.25. Since most asteroids in the outer main-belt are of a carbonaceous rather than of a 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.
The minor planet was named in honour of Academician Bohumil Bydžovský (1880–1969), chancellor of the Charles University in Prague and professor of mathematics. He was born in southern Bohemia and became the most eminent citizen of the Czech town Veselí on the Lužnice river, after which the minor planets 2321 Lužnice and 2599 Veselí were named, respectively.
- "JPL Small-Body Database Browser: 2661 Bydzovsky (1982 FC1)" (2015-06-20 last obs.). Jet Propulsion Laboratory. Retrieved 15 April 2016.
- Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (2661) Bydžovský. Springer Berlin Heidelberg. p. 218. ISBN 978-3-540-29925-7. Retrieved 10 December 2015.
- "Absolute Magnitude (H)". NASA/JPL. Retrieved 2014-06-24.
- "2661 Bydzovsky (1982 FC1)". Minor Planet Center. Retrieved 10 December 2015.
- Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (2599) Veselí. Springer Berlin Heidelberg. p. 212. ISBN 978-3-540-29925-7. Retrieved 10 December 2015.
- Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (2321) Lužnice. Springer Berlin Heidelberg. p. 189. ISBN 978-3-540-29925-7. Retrieved 10 December 2015.
- 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
- 2661 Bydžovský at the JPL Small-Body Database
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