(42) Isis
Asteroid (42) Isis |
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Properties of the orbit ( animation ) | |
Orbit type | Inner main belt |
Major semi-axis | 2,442 AU |
eccentricity | 0.223 |
Perihelion - aphelion | 1.897 AU - 2.987 AU |
Inclination of the orbit plane | 8.5 ° |
Length of the ascending node | 84.2 ° |
Argument of the periapsis | 237.3 ° |
Time of passage of the perihelion | December 22, 2020 |
Sidereal period of rotation | 3 a 298 d |
Mean orbital velocity | 18.82 km / s |
Physical Properties | |
Medium diameter | 111 km |
Albedo | 0.139 |
Rotation period | 13 h 36 min |
Absolute brightness | 7.5 likes |
Spectral class (according to Tholen) |
S. |
Spectral class (according to SMASSII) |
L. |
history | |
Explorer | Norman Pogson |
Date of discovery | May 23, 1856 |
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. |
(42) Isis is an asteroid of the main asteroid belt discovered by Norman Robert Pogson on May 23, 1856 . It was the first asteroid he discovered, and eight more were to follow. Isis is just over 100 kilometers in diameter. The celestial body rotates around its own axis in 6 hours and 36 minutes.
The heavenly body was named after the Egyptian goddess Isis - and the discoverer's daughter, who also bore this name.