(91205) 1998 US43

Infobox Planet
bgcolour=#FFFFC0
name= mp|(91205) 1998 US|43
discovery=yes
discoverer=Marc W. Buie
discovered=October 22, 1998
mp_name=mp|(91205) 1998 US|43
alt_names=
mp_category=plutino (TNO)
epoch=
aphelion=44.220 AU
perihelion=34.002 AU
semimajor=39.111 AU
eccentricity=0.131
period=
avg_speed=
inclination=10.6°
asc_node=223.9°
mean_anomaly=48.1°
arg_peri=139.4°
physical_characteristics=yes
dimensions=116 km
mass=
density=
surface_grav=
escape_velocity=
sidereal_day=
albedo=
single_temperature=
spectral_type=
abs_magnitude=7.9

(91205) 1998 US₄₃, also written as a (91205) 1998 US43 is a plutino, so it has a 2:3 resonance with Neptune, similar to Pluto. It has a perihelion (closest approach to the Sun) at 34.002 AU and an aphelion (farthest approach from the Sun} at 44.220 AU . It is about 116 km in diameter, so it is unlikely to ever be classified as a dwarf planet due to its relatively small size. It was discovered on October 22, 1998 by Marc W. Buie.

References

1. ^ http://cfa-www.harvard.edu/iau/lists/TNOs.html

2. ^ http://www.johnstonsarchive.net/astro/tnoslist.html