426 Hippo
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 25 August 1897 |
| Designations | |
Named after | Hippo Regius |
| 1897 DH | |
| Main belt | |
| Orbital characteristics[1] | |
 | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 112.19 yr (40977 d) |
| Aphelion | 3.1893 AU (477.11 Gm) |
| Perihelion | 2.5893 AU (387.35 Gm) |
| 2.8893 AU (432.23 Gm) | |
| Eccentricity | 0.10384 |
| 4.91 yr (1793.8 d) | |
Average orbital speed | 17.53 km/s |
| 247.692° | |
| 0° 12m 2.484s / day | |
| Inclination | 19.4771° |
| 311.419° | |
| 222.319° | |
| Earth MOID | 1.62498 AU (243.094 Gm) |
| Jupiter MOID | 1.92879 AU (288.543 Gm) |
| Jupiter Tisserand parameter | 3.198 |
| Proper orbital elements[2] | |
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 | 127.10±3.5 km[1] |
| 34.3 h (1.43 d) | |
| 0.0469±0.003[1] | |
| Temperature | 154-171 K |
| F | |
| 8.42[1] | |
|
| |
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.[1]
References
- 1 2 3 4 5 "JPL Small-Body Database Browser: 426 Hippo (1897 DH)" (2013-06-21 last obs). Jet Propulsion Laboratory. Retrieved 10 May 2016.
- ↑ "AstDyS-2 (426) Hippo Synthetic Proper Orbital Elements". Department of Mathematics, University of Pisa, Italy. Retrieved 2014-02-09.
External links
- 426 Hippo at the JPL Small-Body Database
This article is issued from Wikipedia - version of the 9/10/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.