Minorplanet: | yes |
Background: |
|
728 Leonisis | |
Discovered: | 16 February 1912 |
Mpc Name: | (728) Leonisis |
Alt Names: | 1912 NU; A907 UE; 1941 WR; 1968 UT |
Mp Category: | Main belt (Flora family) |
Epoch: | 31 July 2016 (JD 2457600.5) |
Semimajor: | 2.2535AU |
Perihelion: | 2.0561AU |
Aphelion: | 2.4509abbr=onNaNabbr=on |
Eccentricity: | 0.087584 |
Period: | 3.38 yr (1235.6 d) |
Inclination: | 4.2564° |
Asc Node: | 82.661° |
Arg Peri: | 55.396° |
Avg Speed: | 19.80 km/s |
Rotation: | 5.5783abbr=onNaNabbr=on |
Abs Magnitude: | 13.0 |
Mean Motion: | / day |
Observation Arc: | 103.98 yr (37979 d) |
Uncertainty: | 0 |
728 Leonisis is an asteroid of the Flora family, discovered by Austrian astronomer Johann Palisa on 16 February 1912 from Vienna.
There is some uncertainty as to its spectral class. It has been previously placed in the rare A and Ld classes.[1] 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.