153 Hilda
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| Orbital characteristics 1 | |
|---|---|
| Orbit type | Main belt (Hilda) |
| Semimajor axis | 3.973 AU |
| Perihelion distance | 3.412 AU |
| Aphelion distance | 4.533 AU |
| Orbital period | 7.92 years |
| Inclination | 7.83° |
| Eccentricity | 0.141 |
| Physical characteristics 1 | |
| Diameter | 170.6 km |
| Rotation period 3 | 5.11 hours |
| Spectral class | C |
| Abs. magnitude | 7.48 |
| Albedo 4 | 0.062 |
| History 2 | |
| Discoverer | J. Palisa, 1875 |
153 Hilda is a very large asteroid in the outer Main belt. Because it is composed of primitive carbonaceous materials, it has a very dark surface.
Hilda gives its name to an asteroid group called Hilda asteroids (or shorter Hildas). It is not an asteroid family since the members are not physically related. Instead they are asteroids locked in a 2:3 orbital resonance with Jupiter.
It was discovered by J. Palisa on November 2, 1875.
Hilda was observed to occult a star on December 31, 2002 from Japan.
It has a very low-amplitude light curve indicating a spherical body.
| Minor planets | ||
|---|---|---|
| Previous minor planet | 153 Hilda | Next minor planet |
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| Vulcanoids | Near-Earth asteroids | Main belt | Jupiter Trojans | Centaurs | Damocloids | Comets | Trans-Neptunians (Kuiper belt · Scattered disc · Oort cloud) |
| For other objects and regions, see: asteroid groups and families, binary asteroids, asteroid moons and the Solar system For a complete listing, see: List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names. |
