281 Lucretia

Minor Planet | name=281 Lucretia
discoverer=Johann Palisa
discovery_date=October 31, 1888
designations=A906 FD; 1948 EK;
1984 JX
category=Main belt (Flora family)
epoch=30 January, 2005 (JD 2453400.5)
semimajor=327.295 Gm (2.188 AU)
perihelion=283.953 Gm (1.898 AU)
aphelion=370.638 Gm (2.478 AU)
eccentricity=0.132
period=1181.985 d (3.24 a)
inclination=5.308°
asc_node=31.502°
arg_peri=16.288°
mean_anomaly=323.188°
speed=20.14 km/s
dimensions=12 km [http://www.psi.edu/pds/archive/astdata04/simps04/diamalb.tab Supplemental IRAS Minor Planet Survey] ]
mass=~2×10¹⁵ "(estimate)"
density=~2.7 g/cm³ "(estimate)" cite journal | author= G. A. Krasinsky et al| title= "Hidden Mass in the Asteroid Belt"| journal= Icarus| year= 2002| volume= 158| pages= 98| doi= 10.1006/icar.2002.6837]
gravity=~0.004 m/s² "(estimate)"
escape_velocity=~0.007 km/s "(estimate)"
rotation=0.181 d (4.348 h) [http://www.psi.edu/pds/archive/lc.html PDS lightcurve data] ]
spectral_class=S [http://www.psi.edu//pds/resource/taxonomy.html PDS spectral class data] ]
abs_mag=12.02
albedo=0.199
temperature=~183 K
"max:" 277 K (+4°C)

281 Lucretia is an asteroid belonging to the Flora family in the Main Belt.

It was discovered by Johann Palisa on October 31, 1888 in Vienna. It is named for the middle name of Caroline Herschel, one of the first female astronomers.

References