426 Hippo
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | August 25, 1897 |
| Designations | |
Named after | Hippo Regius |
| 1897 DH | |
| Main belt | |
| Orbital characteristics | |
 | |
| Epoch November 4, 2013 | |
| Aphelion | 3.1880 AU (476.92 Gm) |
| Perihelion | 2.5906 AU (387.55 Gm) |
| 2.8893 AU (432.23 Gm) | |
| Eccentricity | 0.1034 |
| 4.91 yr | |
Average orbital speed | 17.53 km/s |
| 47.4380° | |
| Inclination | 19.4779° |
| 311.434° | |
| 221.982° | |
| Proper orbital elements[1] | |
Proper semi-major axis | 2.88928 AU |
Proper eccentricity | 0.179526 |
Proper inclination | 20.3798° |
Proper mean motion | 73.2862 deg / yr |
Proper orbital period |
4.91225 yr (1794.199 d) |
Precession of perihelion | 32.8357 arcsec / yr |
Precession of the ascending node | −59.8571 arcsec / yr |
| Physical characteristics | |
| Dimensions | 127.1 km[2] |
| 1.4292 Earth days | |
| Albedo | 0.0469[2] |
| Temperature | 154-171 K |
Spectral type | F |
| 8.42[2] | |
|
| |
426 Hippo is a rather large main-belt asteroid. It was discovered by Auguste Charlois on August 25, 1897, in Nice. In the 22nd century, it will come closer than 6,000,000 km (0.04 AU) to the larger asteroids 65 Cybele and 511 Davida.[2]
References
- ↑ "AstDyS-2 (426) Hippo Synthetic Proper Orbital Elements". Department of Mathematics, University of Pisa, Italy. Retrieved 2014-02-09.
- ↑ 2.0 2.1 2.2 2.3 "JPL Small-Body Database Browser: 426 Hippo (1897 DH)" (2013-06-21 last obs). Jet Propulsion Laboratory. Retrieved 2014-02-09.
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