728 Leonisis
| Discovery | |
|---|---|
| Discovered by | J. Palisa |
| Discovery date | 16 February 1912 |
| Designations | |
| MPC designation | (728) Leonisis |
| Pronunciation | /liːəˈnaɪsɪs/ |
| 1912 NU; A907 UE; 1941 WR; 1968 UT | |
| 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) |
| 2.2535 AU (337.12 Gm) | |
| Eccentricity | 0.087584 |
| 3.38 yr (1235.6 d) | |
Average orbital speed | 19.80 km/s |
| 317.487° | |
| 0° 17m 28.86s / day | |
| Inclination | 4.2564° |
| 82.661° | |
| 55.396° | |
| Physical characteristics | |
| 5.5783 h (0.23243 d)[1][2] | |
| A or Ld | |
| 13.0 | |
728 Leonisis is an asteroid of the Flora family, found by Johann Palisa in 1912 in Vienna. Its provisional name was 1912 NU.
Astronomers are not sure what its spectral class is. It has been previously placed in the rare A and L classes.[3] These are generally "stony" spectra, but with significant differences from the usual S-type. The unusual spectrum brings Leonisis' membership in the Flora family into doubt.
References
[change | change source]- ↑ 1.0 1.1 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, 37 (3): 119–122, Bibcode:2010MPBu...37..119P.
- ↑ "Asteroid Taxonomy | PDS SBN Asteroid/Dust Subnode".
Other websites
[change | change source]
