astro.wikisort.org - Asteroid
Dido (minor planet designation: 209 Dido) is a main-belt asteroid with a diameter of 179±1 km.[4] It was discovered by C. H. F. Peters on October 22, 1879, in Clinton, New York and was named after the mythical Carthaginian queen Dido. This asteroid is orbiting the Sun at a distance of 3.15 AU with an eccentricity (ovalness) of 0.058 and a period of 5.59 yr. The orbital plane is tilted at an angle of 7.2° to the plane of the ecliptic.[4]
 | |
| Discovery | |
|---|---|
| Discovered by | C. H. F. Peters |
| Discovery date | 22 October 1879 |
| Designations | |
MPC designation | (209) Dido |
| Pronunciation | /ˈdaɪdoʊ/[1] |
Named after | Dido |
Alternative designations | A879 UC, 1909 AB 1909 GB, 1912 RB |
Minor planet category | Main belt |
| Adjectives | Didonian /daɪˈdoʊniən/[2][3] |
| Orbital characteristics[4] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 136.47 yr (49,845 d) |
| Aphelion | 3.331 AU (498.3 Gm) |
| Perihelion | 2.968 AU (444.1 Gm) |
Semi-major axis | 3.150 AU (471.2 Gm) |
| Eccentricity | 0.057565 |
Orbital period (sidereal) | 5.59 yr (2,040.5 d) |
Average orbital speed | 16.79 km/s |
Mean anomaly | 311.722° |
Mean motion | 0° 10m 34.738s / day |
| Inclination | 7.16997° |
Longitude of ascending node | 0.682681° |
Argument of perihelion | 248.387° |
| Physical characteristics | |
| Dimensions | 179±1 km[4] 140.35±10.12 km[5] |
| Mass | (4.59±7.42)×1018 kg[5] |
Synodic rotation period | 5.737 h (0.24 d)[4][6] |
Geometric albedo | 0.028±0.004 |
Spectral type | C |
Absolute magnitude (H) | 8.24 |
209 Dido is classified as a C-type asteroid and is probably composed of carbonaceous materials. Like many asteroids of its type, it has an extremely low albedo. Photometric observations at the Palmer Divide Observatory during 2005 showed a rotation period of 5.7366±0.0005 hours with a brightness variation of 0.17±0.02 in magnitude.[6] The pole orientation in ecliptic coordinates, as determined from multiple light curve studies, is (βp, λp) = (120°±6°, 66°±7°).[7]
References
- Webster, Noah (1884). A Practical Dictionary of the English Language.
- "didonia". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- Shoaf, Richard (1983). Dante, Chaucer, and the currency of the word. p. 52 ff.
- "209 Dido". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
- Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- Warner, Brian D. (December 2005), "Asteroid lightcurve analysis at the Palmer Divide Observatory - spring 2005", The Minor Planet Bulletin, 32 (4): 90–92, Bibcode:2005MPBu...32...90W.
- Zhang, Xi-Liang; et al. (December 2007). "Shapes and Pole Orientations of Asteroids (360) Carlova and (209) Dido". Earth, Moon, and Planets. 101 (3–4): 189–194. Bibcode:2007EM&P..101..189Z. doi:10.1007/s11038-008-9229-z.
External links
- Lightcurve plot of 209 Dido, Palmer Divide Observatory, B. D. Warner (2005)
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- 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
- 209 Dido at AstDyS-2, Asteroids—Dynamic Site
- 209 Dido at the JPL Small-Body Database
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На других языках
[de] (209) Dido
(209) Dido ist ein Asteroid des Asteroiden-Hauptgürtels, der am 22. Oktober 1879 von Christian Heinrich Friedrich Peters entdeckt wurde.- [en] 209 Dido
[es] (209) Dido
(209) Dido es un asteroide que forma parte del cinturón de asteroides y fue descubierto por Christian Heinrich Friedrich Peters el 22 de octubre de 1879 desde el observatorio Litchfield de Clinton, Estados Unidos. Está nombrado por Dido, la legendaria reina de Cartago.[2][ru] (209) Дидона
(209) Дидона (лат. Dido) — довольно крупный астероид главного пояса, принадлежащий к тёмным астероидам спектрального класса C. Обнаружен 22 октября 1879 года германо-американским астрономом К. Г. Ф. Петерсом в Клинтоне, США и назван в честь мифической карфагенский царицы Дидоны[1].Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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