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{{Minor Planet
| name=728 Leonisis
| discoverer=[[J. Palisa]]
| discovery_date=[[February 16]], [[1912]]
| designations=1912 NU; A907 UE;<br />1941 WR; 1968 UT
| category=[[Asteroid belt|Main belt]] ([[Flora family]])
| epoch=[[August 8]], [[2005]] ([[Julian day|JD]] 2453600.5)
| semimajor=337.2 [[Giga|G]][[metre|m]] (2.254 [[Astronomical unit|AU]])
| perihelion=307.7 Gm (2.057 AU)
| aphelion=366.7 Gm (2.451 AU)
| eccentricity=0.0873
| period=1236.0 [[day|d]] (3.38 [[Julian year (astronomy)|a]])
| inclination=4.258[[degree (angle)|°]]
| asc_node=82.701°
| arg_peri=55.194°
| mean_anomaly=232.528°
| speed=19.80 km/[[second|s]]
| dimensions=''unknown''
| mass=''unknown''
| density=''unknown''
| gravity=''unknown''
| escape_velocity=''unknown''
| rotation=~0.2 d (~5 [[hour|h]])<ref>[http://www.psi.edu/pds/archive/lc.html]</ref>
| spectral_class=[[A-type asteroid|A]] or [[L-type asteroid|Ld]]
| abs_mag=12.8
| albedo=''unknown''
| temperature=
}}
'''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-type asteroid|A]] and [[L-type asteroid|L]] classes.<ref>[http://www.psi.edu/pds/resource/taxonomy.html]</ref> These are generally "stony" spectra, but with significant differences from the usual [[S-type asteroid|S-type]]. The unusual spectrum brings Leonisis' membership in the Flora family into doubt.
== References ==
{{reflist}}
== Other websites ==
* [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.txt Discovery Circumstances: Numbered Minor Planets]
{{MinorPlanets Navigator|727 Nipponia|729 Watsonia}}
{{Small Solar System bodies}}
{{sci-stub}}
{{DEFAULTSORT:Leonisis}}
[[Category:Asteroids]]
| name=728 Leonisis
| discoverer=[[J. Palisa]]
| discovery_date=[[February 16]], [[1912]]
| designations=1912 NU; A907 UE;<br />1941 WR; 1968 UT
| category=[[Asteroid belt|Main belt]] ([[Flora family]])
| epoch=[[August 8]], [[2005]] ([[Julian day|JD]] 2453600.5)
| semimajor=337.2 [[Giga|G]][[metre|m]] (2.254 [[Astronomical unit|AU]])
| perihelion=307.7 Gm (2.057 AU)
| aphelion=366.7 Gm (2.451 AU)
| eccentricity=0.0873
| period=1236.0 [[day|d]] (3.38 [[Julian year (astronomy)|a]])
| inclination=4.258[[degree (angle)|°]]
| asc_node=82.701°
| arg_peri=55.194°
| mean_anomaly=232.528°
| speed=19.80 km/[[second|s]]
| dimensions=''unknown''
| mass=''unknown''
| density=''unknown''
| gravity=''unknown''
| escape_velocity=''unknown''
| rotation=~0.2 d (~5 [[hour|h]])<ref>[http://www.psi.edu/pds/archive/lc.html]</ref>
| spectral_class=[[A-type asteroid|A]] or [[L-type asteroid|Ld]]
| abs_mag=12.8
| albedo=''unknown''
| temperature=
}}
'''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-type asteroid|A]] and [[L-type asteroid|L]] classes.<ref>[http://www.psi.edu/pds/resource/taxonomy.html]</ref> These are generally "stony" spectra, but with significant differences from the usual [[S-type asteroid|S-type]]. The unusual spectrum brings Leonisis' membership in the Flora family into doubt.
== References ==
{{reflist}}
== Other websites ==
* [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.txt Discovery Circumstances: Numbered Minor Planets]
{{MinorPlanets Navigator|727 Nipponia|729 Watsonia}}
{{Small Solar System bodies}}
{{sci-stub}}
{{DEFAULTSORT:Leonisis}}
[[Category:Asteroids]]