Discovered by J. Palisa Observation arc 103.98 yr (37979 d) Discovered 16 February 1912 Spectral type A-type asteroid Asteroid family Flora family | Discovery date 16 February 1912 Aphelion 2.4509 AU (366.65 Gm) Orbits Sun Discoverer Johann Palisa Discovery site Vienna Observatory | |
Alternative names 1912 NU; A907 UE;
1941 WR; 1968 UT Minor planet category Main belt (Flora family) Similar 242 Kriemhild, 220 Stephania, 142 Polana, 266 Aline, 276 Adelheid | ||
728 Leonisis is an asteroid of the Flora family, discovered by Austrian astronomer Johann Palisa on February 16, 1912 from Vienna.
There is some uncertainty as to its spectral class. It has been previously placed in the rare A and Ld classes. 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.
References
728 Leonisis Wikipedia(Text) CC BY-SA