astro.wikisort.org - Asteroid
728 Leonisis is an asteroid of the Flora family, discovered by Austrian astronomer Johann Palisa on 16 February 1912 from Vienna.[3]
| Discovery | |
|---|---|
| Discovered by | J. Palisa |
| Discovery date | 16 February 1912 |
| Designations | |
MPC designation | (728) Leonisis |
| Pronunciation | /liːəˈnaɪsɪs/ |
Alternative designations | 1912 NU; A907 UE; 1941 WR; 1968 UT |
Minor planet category | Main belt (Flora family) |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 103.98 yr (37979 d) |
| Aphelion | 2.4509 AU (366.65 Gm) |
| Perihelion | 2.0561 AU (307.59 Gm) |
Semi-major axis | 2.2535 AU (337.12 Gm) |
| Eccentricity | 0.087584 |
Orbital period (sidereal) | 3.38 yr (1235.6 d) |
Average orbital speed | 19.80 km/s |
Mean anomaly | 317.487° |
Mean motion | 0° 17m 28.86s / day |
| Inclination | 4.2564° |
Longitude of ascending node | 82.661° |
Argument of perihelion | 55.396° |
| Physical characteristics | |
Synodic rotation period | 5.5783 h (0.23243 d)[1][2] |
Spectral type | A or Ld |
Absolute magnitude (H) | 13.0 |
There is some uncertainty as to its spectral class. It has been previously placed in the rare A and Ld classes.[4] These are generally "stony" spectra, but with significant deviations from the usual S-type. The unusual spectrum brings Leonisis' membership in the Flora family into doubt.
Photometric observations of this asteroid from the Organ Mesa Observatory in Las Cruces, New Mexico, during 2010 gave a light curve with a period of 5.5783 ± 0.0002 hours and a brightness variation of 0.20 ± 0.04 magnitude.[2]
References
- Yeomans, Donald K., "728 Leonisis", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 5 May 2016.
- Pilcher, Frederick (July 2010), "Period Determinations for 11 Parthenope, 35 Leukothea, 38 Leda, 111 Ate, 194 Prokne, 262 Valda, 728 Leonisis, and 747 Winchester", The Minor Planet Bulletin, vol. 37, no. 3, pp. 119–122, Bibcode:2010MPBu...37..119P.
- "Numbered Minor Planets 1–5000", Discovery Circumstances, IAU Minor Planet center, retrieved 7 April 2013.
- "Asteroid Taxonomy". Archived from the original on 17 January 2010. Retrieved 27 December 2008.
External links
- 728 Leonisis at AstDyS-2, Asteroids—Dynamic Site
- 728 Leonisis 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] (728) Leonisis
(728) Leonisis ist ein Asteroid des Hauptgürtels, der am 16. Februar 1912 vom österreichischen Astronomen Johann Palisa in Wien entdeckt wurde.- [en] 728 Leonisis
[es] (728) Leonisis
(728) Leonisis es un asteroide perteneciente al cinturón de asteroides descubierto el 16 de febrero de 1912 por Johann Palisa desde el observatorio de Viena, Austria. Está nombrado en honor del industrial alemán Leo Gans (1843-1935) en combinación con isis, emblema de la Sociedad de Física de Fráncfort de la que formaba parte.[2][ru] (728) Леонисида
(728) Леонисида (лат. Leonisis) — астероид главного пояса, принадлежащий к очень редкому спектральному подклассу Ld. Он был открыт 16 февраля 1912 года австрийским астрономом Иоганном Пализой в Вене. Его название является производным от имён Лео Ганса (англ.) (рус., президента физического общества, и египетской богини Исиды[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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