426 Hippo

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426 Hippo
Discovery
Discovered by Auguste Charlois
Discovery date 25 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 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)
247.692°
0° 12m 2.484s / day
Inclination 19.4771°
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
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[edit]

  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 links[edit]