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]
leonisis, asteroid, flora, family, discovered, austrian, astronomer, johann, palisa, february, 1912, from, vienna, discoverydiscovered, palisadiscovery, date16, february, 1912designationsmpc, designation, leonisispronunciation, alternative, designations1912, a. 728 Leonisis is an asteroid of the Flora family discovered by Austrian astronomer Johann Palisa on 16 February 1912 from Vienna 3 728 LeonisisDiscoveryDiscovered byJ PalisaDiscovery date16 February 1912DesignationsMPC designation 728 LeonisisPronunciation l iː e ˈ n aɪ s ɪ s Alternative designations1912 NU A907 UE 1941 WR 1968 UTMinor planet categoryMain belt Flora family Orbital characteristics 1 Epoch 31 July 2016 JD 2457600 5 Uncertainty parameter 0Observation arc103 98 yr 37979 d Aphelion2 4509 AU 366 65 Gm Perihelion2 0561 AU 307 59 Gm Semi major axis2 2535 AU 337 12 Gm Eccentricity0 087584Orbital period sidereal 3 38 yr 1235 6 d Average orbital speed19 80 km sMean anomaly317 487 Mean motion0 17m 28 86s dayInclination4 2564 Longitude of ascending node82 661 Argument of perihelion55 396 Physical characteristicsSynodic rotation period5 5783 h 0 23243 d 1 2 Spectral typeA or LdAbsolute 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 edit a b Yeomans Donald K 728 Leonisis JPL Small Body Database Browser NASA Jet Propulsion Laboratory retrieved 5 May 2016 a b 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 edit728 Leonisis at AstDyS 2 Asteroids Dynamic Site Ephemeris Observation prediction Orbital info Proper elements Observational info 728 Leonisis at the JPL Small Body Database nbsp Close approach Discovery Ephemeris Orbit diagram Orbital elements Physical parameters nbsp This article about an S type asteroid native to the asteroid belt is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title 728 Leonisis amp oldid 1191449379, wikipedia, wiki, book, books, library,
