astro.wikisort.org - AsteroidIsmene (minor planet designation: 190 Ismene) is a very large main belt asteroid. It was discovered by German-American astronomer C. H. F. Peters on September 22, 1878, in Clinton, New York, and named after Ismene, the sister of Antigone in Greek mythology.
190 Ismene|
Discovered by | C. H. F. Peters, 1878 |
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Discovery date | 22 September 1878 |
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MPC designation | (190) Ismene |
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Pronunciation | [1] |
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Minor planet category | Main belt (Hilda) |
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Epoch 31 July 2016 (JD 2457600.5) |
Uncertainty parameter 0 |
Observation arc | 121.44 yr (44357 d) |
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Aphelion | 4.6480 AU (695.33 Gm) |
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Perihelion | 3.3248 AU (497.38 Gm) |
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Semi-major axis | 3.9864 AU (596.36 Gm) |
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Eccentricity | 0.16597 |
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Orbital period (sidereal) | 7.96 yr (2907.2 d) |
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Mean anomaly | 134.92° |
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Mean motion | 0° 7m 25.788s / day |
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Inclination | 6.1772° |
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Longitude of ascending node | 175.48° |
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Argument of perihelion | 271.47° |
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Mean radius | 79.5 km [2] 90 km [3] |
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Synodic rotation period | 6.52 h (0.272 d)3 |
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Geometric albedo | 0.066 |
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Spectral type | P |
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Absolute magnitude (H) | 7.77[4] 7.59[2] |
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Being a P-type asteroid, it has a very dark surface. Ismene orbits near the outer edge of the asteroid belt. It is one of the largest members of the Hilda asteroid family, which are locked in 3:2 resonance with the planet Jupiter.[5]
References
- Noah Webster (1884) A Practical Dictionary of the English Language
- Yeomans, Donald K., "190 Ismene", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 6 May 2016.
- "IOTA/IOTA-ES occultation update for (190) Ismene / TYC 0790-00635-1 event on 2014 Jan 18, 19:57 UT". Archived from the original on 14 July 2014. Retrieved 11 June 2014.
- Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", The Minor Planet Bulletin, vol. 34, pp. 113–119, Bibcode:2007MPBu...34..113W.
- Dahlgren, M.; Lagerkvist, C.-I. (October 1995), "A study of Hilda asteroids. I. CCD spectroscopy of Hilda asteroids", Astronomy and Astrophysics, 302: 907, Bibcode:1995A&A...302..907D.
External links
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На других языках
[de] (190) Ismene
(190) Ismene ist ein Asteroid des äußeren Hauptgürtels, der am 22. September 1878 von C. H. F. Peters am Hamilton College Observatory in Clinton entdeckt wurde.
- [en] 190 Ismene
[es] (190) Ismene
(190) Ismene es un asteroide perteneciente al cinturón exterior de asteroides descubierto por Christian Heinrich Friedrich Peters el 22 de septiembre de 1878 desde el observatorio Litchfield de Clinton, Estados Unidos.
Está nombrado por Ismene, un personaje de la mitología griega.[2]
[ru] (190) Исмена
(190) Исмена (др.-греч. Ἰσμήνη) — довольно крупный астероид внешней части главного пояса.
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