728 Leonisis
| Discovery | |
|---|---|
| Discovered by | J. Palisa |
| Discovery date | February 16, 1912 |
| Designations | |
| 1912 NU; A907 UE; 1941 WR; 1968 UT |
|
| Main belt (Flora family) | |
| Orbital characteristics[1] | |
| Epoch August 8, 2005 (JD 2453600.5) | |
| Aphelion | 366.7 Gm (2.451 AU) |
| Perihelion | 307.7 Gm (2.057 AU) |
| 337.2 Gm (2.254 AU) | |
| Eccentricity | 0.0873 |
| Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). | |
|
Average orbital speed
|
19.80 km/s |
| 232.528° | |
| Inclination | 4.258° |
| 82.701° | |
| 55.194° | |
| Physical characteristics | |
| 5.5783[2] h | |
|
Spectral type
|
A or Ld |
| 12.8 | |
728 Leonisis is an asteroid of the Flora family, discovered by Austrian astronomer Johann Palisa on February 16, 1912 from Vienna.[3]
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
External links
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