210 Isabella

Infobox Planet | discovery=yes | physical_characteristics = yes | bgcolour=#FFFFC0 | name=210 Isabella
discoverer=Johann Palisa
discovered=November 12, 1879
alt_names=1953 EZ₁, 1962 BF
mp_category=Main belt (Nemesis)
epoch=30 January, 2005 (JD 2453400.5)
semimajor=407.14 Gm (2.722 AU)
perihelion=356.48 Gm (2.383 AU)
aphelion=457.8 Gm (3.06 AU)
eccentricity=0.124
period=1639.903 d (4.49 a)
inclination=5.261°
asc_node=32.859°
arg_peri=13.893°
mean_anomaly=312.938°
avg_speed=18.05 km/s
dimensions=87.0 km
mass="unknown"
density="unknown"
surface_grav="unknown"
escape_velocity="unknown"
rotation="unknown"
spectral_type=CF
magnitude = 12.2 (peak)
abs_magnitude=9.33
albedo=0.045
single_temperature="unknown"

210 Isabella is a large and dark Main belt asteroid and is probably composed of material similar to carbonaceous chondrites.

The asteroid is classified as a member of the Nemesis asteroid family.

It was discovered by Johann Palisa on November 12, 1879 in Pola.

The origin of the name is unknown.

References

* [ftp://ftp.lowell.edu/pub/elgb/astorb.html The Asteroid Orbital Elements Database]
* [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html Minor Planet Discovery Circumstances]
* [http://spiff.rit.edu/richmond/parallax/phot/LCSUMPUB.TXT Asteroid Lightcurve Data File]

External links

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=210;orb=1 Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=210 Ephemeris]