42 Isis

42 Isis

Infobox Planet | discovery=yes | physical_characteristics = yes | bgcolour=#FFFFC0
name=42 Isis
discoverer=Norman Robert Pogson
discovered=May 23, 1856
alt_names=
mp_category=Main belt
epoch=December 31, 2006 (JD 2454100.5)
semimajor=365.298 Gm (2.442 AU)
perihelion=283.890 Gm (1.898 AU)
aphelion=446.706 Gm (2.986 AU)
eccentricity=0.223
period=1393.737 d (3.82 a)
inclination=8.530°
asc_node=84.398°
arg_peri=236.626°
mean_anomaly=121.874°
avg_speed=18.82 km/s
dimensions=100.2 km
mass=1.1e|18 kg
density=? g/cm³
surface_grav=0.0280 m/s²
escape_velocity=0.0530 km/s
rotation=? d
spectral_type=S
magnitude = 9.18 (brightest)
abs_magnitude=7.53
albedo=0.171 (geometric) [ [http://www.psi.edu/pds/resource/albedo.html Asteroid Data Sets ] ]
single_temperature=~178 K

42 Isis (IPAEng|ˈaɪsɨs) is a large main belt asteroid. Isis was discovered by N. R. Pogson on May 23, 1856. It was his first asteroid discovery. It is named after Isis, the classical (Greek) name of an Egyptian goddess.

References

External links

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=42;orb=1 Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=42 Ephemeris]


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