21709 Sethmurray

21709 Sethmurray

Minor Planet
name=21709 Sethmurray
discoverer=LINEAR
discovery_date=September 7, 1999
designations=1974 HF2; 1984 GG1; 1994 AA2; 1999 RK92
category=Main belt
epoch=November 26, 2005 (JD 2453700.5)
semimajor=337.985 Gm (2.259 AU)
perihelion=307.193 Gm (2.053 AU)
aphelion=368.777 Gm (2.465 AU)
eccentricity=0.091
period=1240.385 d (3.40 a)
inclination=6.068°
asc_node=357.119°
arg_peri=144.420°
mean_anomaly=163.805°
speed=19.77 km/s
dimensions=? km
mass=?×10? kg
density=? g/cm³
gravity=? m/s²
escape_velocity=? km/s
rotation=? d
spectral_class=?
abs_mag=14.4
albedo=0.1?
temperature=~185 K

21709 Sethmurray is an asteroid. It was discovered on September 7, 1999 by MIT's Lincoln Laboratory Near-Earth Asteroid Research program (LINEAR).

It was named after Seth A. Murray as a reward for placing second in the microbiology category at the 2005 Intel International Science and Engineering fair (ISEF) in Phoenix, Arizona.


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