astro.wikisort.org - Asteroid
Phaedra (minor planet designation: 174 Phaedra) is a sizable, rocky main belt asteroid that was discovered by Canadian-American astronomer James Craig Watson on September 2, 1877, and named after Phaedra, the tragic lovelorn queen in Greek mythology.
 A three-dimensional model of 174 Phaedra based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | J. C. Watson |
| Discovery date | 2 September 1877 |
| Designations | |
MPC designation | (174) Phaedra |
| Pronunciation | /ˈfiːdrə/[1] |
Minor planet category | Main belt |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 138.61 yr (50629 d) |
| Aphelion | 3.2658 AU (488.56 Gm) |
| Perihelion | 2.4572 AU (367.59 Gm) |
Semi-major axis | 2.8615 AU (428.07 Gm) |
| Eccentricity | 0.14128 |
Orbital period (sidereal) | 4.84 yr (1768.0 d) |
Mean anomaly | 330.70° |
Mean motion | 0° 12m 13.032s / day |
| Inclination | 12.124° |
Longitude of ascending node | 327.69° |
Argument of perihelion | 289.08° |
| Earth MOID | 1.47439 AU (220.566 Gm) |
| Jupiter MOID | 1.99981 AU (299.167 Gm) |
| TJupiter | 3.254 |
| Physical characteristics | |
Mean radius | 34.62±2.2 km |
Synodic rotation period | 5.744 h (0.2393 d) |
Geometric albedo | 0.1495±0.021 |
Spectral type | S |
Absolute magnitude (H) | 8.48 |
The asteroid is orbiting the Sun with a period of 4.84 years and an eccentricity of 0.14. Lightcurve data obtained from Phaedra indicates a rather irregular or elongated body. It has a cross-section size of ~35 km. Photometric observations of this asteroid at the Shadowbox Observatory in Carmel, Indiana, during 2009 gave a light curve with a period of 4.96 ± 0.01 hours. This is consistent with previous studies in 1977, 1988, and 2008.[3] The asteroid's pole of rotation lies just 5–16° away from the plane of the ecliptic.[4]
References
- Noah Webster (1884) A Practical Dictionary of the English Language
- Yeomans, Donald K., "174 Phaedra", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 6 May 2016.
- Ruthroff, John C. (July 2009), "Photometric Observations and Lightcurve Analysis of Asteroids 129 Antigone, 174 Phaedra, 232 Russia, 291 Alice, and 343 Ostara", The Minor Planet Bulletin, vol. 36, no. 3, pp. 121–122, Bibcode:2009MPBu...36..121R.
- Marciniak, A.; et al. (May 2011), "Photometry and models of selected main belt asteroids. VIII. Low-pole asteroids", Astronomy & Astrophysics, 529: 14, Bibcode:2011A&A...529A.107M, doi:10.1051/0004-6361/201015365, A107
External links
- 174 Phaedra at AstDyS-2, Asteroids—Dynamic Site
- 174 Phaedra at the JPL Small-Body Database
 | This article about an S-type asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it. |
На других языках
[de] (174) Phaedra
(174) Phaedra ist ein Asteroid des Asteroiden-Hauptgürtels, der am 2. September 1877 von James Craig Watson entdeckt wurde.- [en] 174 Phaedra
[es] (174) Phaedra
(174) Phaedra es un asteroide perteneciente al cinturón de asteroides descubierto por James Craig Watson el 2 de septiembre de 1877 desde el observatorio Detroit de Ann Arbor, Estados Unidos. Está nombrado por Fedra, un personaje de la mitología griega.[2][ru] (174) Федра
(174) Федра (др.-греч. Φαίδρα) — относительно небольшой астероид главного пояса неправильной формы. Он был открыт 2 сентября 1877 года американским астрономом Дж. Уотсоном в Энн-Арбор, США и назван в честь Федры, жены Тесея, которая, согласно древнегреческой мифологии, влюбилась в своего пасынка[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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