(14) Irene
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Asteroid (14) Irene 
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.587 AU |
| eccentricity | 0.1670 |
| Perihelion - aphelion | 2.155 AU - 3.019 AU |
| Inclination of the orbit plane | 9.10 ° |
| Length of the ascending node | 86.4 ° |
| Argument of the periapsis | 96.6 ° |
| Time of passage of the perihelion | January 28, 2009 |
| Sidereal period | 4 a 59 d |
| Mean orbital velocity | 18.4 km / s |
| Physical Properties | |
| Medium diameter | approx. 182 km |
| Dimensions | 6.3 x 10 18 kg |
| Albedo | 0.16 |
| Medium density | approx. 2 g / cm³ |
| Rotation period | 15.06 h |
| Absolute brightness | 6.3 mag |
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Spectral class (according to Tholen) |
S. |
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Spectral class (according to SMASSII) |
S. |
| history | |
| Explorer | John R. Hind |
| Date of discovery | May 19, 1851 |
| 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. | |
(14) Irene is an asteroid of the main asteroid belt discovered by John Russel Hind as the fourteenth asteroid on May 19, 1851 . The name is derived from the Hore Eirene , which in Greek mythology was the embodiment of peace.
With a diameter of 182 kilometers, Irene is one of the larger asteroids in the main belt. The asteroid has a silicate-rich surface and is assigned to the group of S-type asteroids. The geometric albedo is 0.16.
It rotates around its own axis in around 15 hours.
See also
Individual evidence
- ^ Asteroid Lightcurve Data File, Updated March 1, 2001 (TXT). Retrieved June 19, 2010.