(225) Henrietta
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Asteroid (225) Henrietta |
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| Properties of the orbit ( animation ) | |
| Orbit type | Outer main belt |
| Major semi-axis | 3,389 AU |
| eccentricity | 0.264 |
| Perihelion - aphelion | 2.494 AU - 4.284 AU |
| Inclination of the orbit plane | 20.9 ° |
| Length of the ascending node | 197.1 ° |
| Argument of the periapsis | 104.1 ° |
| Time of passage of the perihelion | October 27, 2013 |
| Sidereal period | 6 a 87 d |
| Mean orbital velocity | 15.9 km / s |
| Physical Properties | |
| Medium diameter | approx. 96 km |
| Albedo | 0.062 |
| Rotation period | 7 h 22 min |
| Absolute brightness | 8.72 likes |
| Spectral class | F. |
| history | |
| Explorer | Johann Palisa |
| Date of discovery | April 19, 1882 |
| 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. | |
(225) Henrietta is an asteroid of the outer main asteroid belt , which on April 19, 1882 by Johann Palisa the Observatory of Wien was discovered. The asteroid was named after the wife of the astronomer Pierre Jules César Janssen .
Henrietta moves in an eccentric orbit around the Sun at a distance of 2.4945 ( perihelion ) to 4.2837 ( aphelion ) astronomical units in 6.24 years . The orbit is strongly inclined towards the ecliptic at 20.8725 ° , the orbit eccentricity is 0.2640.
Henrietta has an average diameter of about 96 kilometers. It has a dark surface with an albedo of 0.062. It rotates around its own axis in around 7 hours and 21 minutes.