Science Fair Project Encyclopedia
91 Aegina
| Orbital characteristics 1 | |
|---|---|
| Orbit type | Main belt |
| Semimajor axis | 2.591 AU |
| Perihelion distance | 2.320 AU |
| Aphelion distance | 2.861 AU |
| Orbital period | 4.17 years |
| Inclination | 2.11° |
| Eccentricity | 0.105 |
| Physical characteristics 1 | |
| Diameter | 109.8 km |
| Rotation period 3 | 6.025 hours |
| Abs. magnitude | 8.84 |
| Albedo 4 | 0.043 |
| History 2 | |
| Discoverer | Édouard Stephan, 1866 |
91 Aegina (e-jye'-na) is a large main belt asteroid. Its surface coloring is very dark and the asteroid has probably a primitive carbonaceous composition.
It was discovered by a French astronomer Édouard Jean-Marie Stephan on November 4, 1866. It was his second and final asteroid discovery. The first was 89 Julia. The asteroid's name comes from Aegina, a Greek mythological figure associated with the island of the same name.
... | Previous asteroid | 91 Aegina | Next asteroid | ...
10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details