astro.wikisort.org - Asteroid
Etheridgea (minor planet designation: 331 Etheridgea) is a large main belt asteroid.[1] It was discovered by Auguste Charlois on 1 April 1892 in Nice. The meaning of the name is unknown.[2] This asteroid is orbiting the Sun at a distance of 3.02 AU with a period of 5.26 years and an eccentricity (ovalness) of 0.10. The orbital plane is tilted at an angle of 6.05° to the plane of the ecliptic.[1]
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 1 April 1892 |
| Designations | |
MPC designation | (331) Etheridgea |
| Pronunciation | /ˌɛθəˈrɪdʒiə/ |
Minor planet category | Main belt |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 123.95 yr (45,274 d) |
| Aphelion | 3.32623 AU (497.597 Gm) |
| Perihelion | 2.72055 AU (406.988 Gm) |
Semi-major axis | 3.02339 AU (452.293 Gm) |
| Eccentricity | 0.10016 |
Orbital period (sidereal) | 5.26 yr (1,920.2 d) |
Mean anomaly | 88.5392° |
Mean motion | 0° 11m 14.939s / day |
| Inclination | 6.05385° |
Longitude of ascending node | 22.0346° |
Argument of perihelion | 333.055° |
| Physical characteristics | |
| Dimensions | 74.92±2.7 km |
Synodic rotation period | 25.315 h (1.0548 d) |
Geometric albedo | 0.0447±0.003 |
Absolute magnitude (H) | 9.62 |
Analysis of the asteroid light curve generated from photometric data collected in 2015 provided a rotation period of 25.315±0.001 h. This result is completely different from the previous rotation period estimates.[3] It is a low albedo, carbonaceous C-type asteroid and spans a girth of 74.9±2.7 km.[4]
References
- "331 Etheridgea". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
- Schmadel, Lutz D. (2009), Dictionary of Minor Planet Names, Addendum to Fifth Edition: 2006 - 2008, Springer, p. 217, ISBN 9783642019654
- Pilcher, Frederick (April 2016), "Rotation Period Determination for 269 Justitia, 275 Sapientia 331 Etheridgea, and 609 Fulvia", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, 43 (2): 135–136, Bibcode:2016MPBu...43..135P.
- Fornasier, S.; et al. (2014), "Aqueous alteration on main belt primitive asteroids: Results from visible spectroscopy", Icarus, 233: 163–178, arXiv:1402.0175, Bibcode:2014Icar..233..163F, doi:10.1016/j.icarus.2014.01.040.
External links
- Lightcurve plot of 331 Etheridgea, Palmer Divide Observatory, B. D. Warner (1999)
- 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
- 331 Etheridgea at AstDyS-2, Asteroids—Dynamic Site
- 331 Etheridgea at the JPL Small-Body Database
 | This article about an asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it. |
На других языках
[de] (331) Etheridgea
(331) Etheridgea ist ein Asteroid des äußeren Asteroiden-Hauptgürtels, der am 1. April 1892 von Auguste Charlois am Observatorium von Nizza entdeckt wurde.- [en] 331 Etheridgea
[es] (331) Etheridgea
(331) Etheridgea es un asteroide perteneciente al cinturón de asteroides descubierto el 1 de abril de 1892 por Auguste Honoré Charlois desde el observatorio de Niza, Francia. Se desconoce la razón del nombre.[2][ru] (331) Эфериджия
(331) Эфериджия (лат. Etheridgea) — астероид главного пояса, принадлежащий к тёмному спектральному классу C. Он был открыт 1 апреля 1892 года французским астрономом Огюстом Шарлуа в обсерватории Ниццы. Происхождение названия неизвестно.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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