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Hippo (minor planet designation: 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]

426 Hippo
Discovery
Discovered byAuguste Charlois
Discovery date25 August 1897
Designations
MPC designation(426) Hippo
Named after
Hippo Regius
1897 DH
Main belt
Orbital characteristics[1]
Orbit of 426 Hippo.gif
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc112.19 yr (40977 d)
Aphelion3.1893 AU (477.11 Gm)
Perihelion2.5893 AU (387.35 Gm)
2.8893 AU (432.23 Gm)
Eccentricity0.10384
4.91 yr (1793.8 d)
247.692°
0° 12m 2.484s / day
Inclination19.4771°
311.419°
222.319°
Proper orbital elements[2]
2.88928 AU
0.179526
20.3798°
73.2862 deg / yr
4.91225 yr
(1794.199 d)
Precession of perihelion
32.8357 arcsec / yr
Precession of the ascending node
−59.8571 arcsec / yr
Physical characteristics
Dimensions127.10±3.5 km[1]
34.3 h (1.43 d)
0.0469±0.003[1]
Temperature154-171 K
F
8.42[1]

ReferencesEdit

  1. ^ a b c d e "JPL Small-Body Database Browser: 426 Hippo (1897 DH)" (2013-06-21 last obs). Jet Propulsion Laboratory. Retrieved 10 May 2016.
  2. ^ "AstDyS-2 (426) Hippo Synthetic Proper Orbital Elements". Department of Mathematics, University of Pisa, Italy. Retrieved 2014-02-09.

External linksEdit