astro.wikisort.org - Asteroid
Iduna (minor planet designation: 176 Iduna) is a large main-belt asteroid that was discovered by German-American astronomer Christian Heinrich Friedrich Peters on October 14, 1877, in Clinton, New York. It is named after Sällskapet Idun, a club in Stockholm that hosted an astronomical conference; Idun (Iðunn, Iduna) is also a Norse goddess.[3][4] A G-type asteroid, it has a composition similar to that of the largest main-belt asteroid, 1 Ceres.
 3D convex shape model of 176 Iduna | |
| Discovery | |
|---|---|
| Discovered by | C. H. F. Peters |
| Discovery date | 14 October 1877 |
| Designations | |
MPC designation | (176) Iduna |
| Pronunciation | /iːˈduːnə/ |
Named after | Iðunn |
Minor planet category | Main belt |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 138.50 yr (50587 d) |
| Aphelion | 3.7235 AU (557.03 Gm) |
| Perihelion | 2.6526 AU (396.82 Gm) |
Semi-major axis | 3.1880 AU (476.92 Gm) |
| Eccentricity | 0.16796 |
Orbital period (sidereal) | 5.69 yr (2079.1 d) |
Mean anomaly | 165.15° |
Mean motion | 0° 10m 23.34s / day |
| Inclination | 22.660° |
Longitude of ascending node | 200.50° |
Argument of perihelion | 188.17° |
| Earth MOID | 1.65682 AU (247.857 Gm) |
| Jupiter MOID | 1.73015 AU (258.827 Gm) |
| TJupiter | 3.056 |
| Physical characteristics | |
| Dimensions | 121.04±2.2 km |
Synodic rotation period | 11.2877 h (0.47032 d)[1] 11.289 hours[2] |
Geometric albedo | 0.0834±0.003 |
Spectral type | G |
Absolute magnitude (H) | 8.2 |
An occultation of a star by Iduna was observed from Mexico on January 17, 1998.
Photometric observations of this asteroid at the Romer Observatory in Aarhus, Denmark during 1996 gave a light curve with a period of 11.289 ± 0.006 hours and a brightness variation of 0.35 in magnitude.[2] A 2008 study at the Palmer Divide Observatory in Colorado Springs, Colorado gave a period of 11.309 ± 0.005 hours, confirming the 1996 result.[5]
References
- Yeomans, Donald K., "176 Iduna", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
- Hansen, A. T.; Arentoft, T. (June 1997), "The Rotational Period of 176 Iduna", The Minor Planet Bulletin, 24: 14, Bibcode:1997MPBu...24Q..14H.
- "Motiveringar till asteroidnamn med svensk anknytning" (in Swedish). Uppsala University. Archived from the original on 8 July 2009. Retrieved 24 October 2017.
- Schmadel, Lutz (1992). Dictionary of Minor Planet Names. Vol. 2. Berlin: Springer Verlag. p. 28. ISBN 3-540-00238-3. Retrieved 24 October 2017.
- Warner, Brian D. (June 2008), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory - June - October 2007", The Minor Planet Bulletin, 35 (2): 56–60, Bibcode:2008MPBu...35...56W.
External links
- Lightcurve plot of 176 Iduna, Palmer Divide Observatory, B. D. Warner (2007)
- 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
- 176 Iduna at AstDyS-2, Asteroids—Dynamic Site
- 176 Iduna 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] (176) Iduna
(176) Iduna ist ein Asteroid des äußeren Asteroiden-Hauptgürtels, der am 14. Oktober 1877 von Christian Heinrich Friedrich Peters in New York entdeckt wurde.[1] Benannt wurde der Himmelskörper nach Idun, der Göttin der Jugend aus der nordischen Mythologie.- [en] 176 Iduna
[es] (176) Iduna
(176) Iduna es un asteroide perteneciente al cinturón de asteroides descubierto por Christian Heinrich Friedrich Peters desde el observatorio Litchfield de Clinton, Estados Unidos, el 14 de octubre de 1877. Está nombrado por un club de Estocolmo donde se celebró un encuentro astronómico en 1877.[2][ru] (176) Идуна
(176) Идуна (норв. Iðunn) — крупный астероид главного пояса, с очень низким альбедо поверхности, по составу близкой к составу поверхности Цереры. Он был открыт 14 октября 1877 года германо-американским астрономом К. Г. Ф. Петерсом в Клинтоне, США и назван в честь Идун, богини вечной юности в геромано-скандинавской мифологии[1]. Так назывался также клуб в Стокгольме, который организовал астрономическую конференцию.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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