42 Isis
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| Isidian orbital characteristics 1 (ftp://ftp.lowell.edu/pub/elgb/astorb.html) | |
|---|---|
| Orbit type | Main belt |
| Semimajor axis | 2.443 AU |
| Perihelion distance | 1.899 AU |
| Aphelion distance | 2.986 AU |
| Orbital period | 3.82 years |
| Inclination | 8.53° |
| Eccentricity | 0.223 |
| Isidian physical characteristics 1 (ftp://ftp.lowell.edu/pub/elgb/astorb.html) | |
| Diameter | 100.2 km |
| Rotation period 3 (http://charlie.psi.edu/pds/) | 13.59 hours |
| Spectral class | S |
| Abs. magnitude | 7.53 |
| Albedo 4 (http://dorothy.as.arizona.edu/DSN/IRAS/index_iras.html) | 0.171 |
| History 2 (http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html) | |
| Discoverer | N. R. Pogson, 1856 |
42 Isis (eye'-sis) 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.
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