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From Wikipedia, the free encyclopedia
The Hungaria family (003[1]) is a collisional asteroid family of at least 2,966 known asteroids,[2] named for its largest member, the 11-kilometre (6.8 mi)-across asteroid 434 Hungaria. It lies within the larger dynamical group of Hungaria asteroids, a group of asteroids in the far inner asteroid belt, with semimajor axes of 1.78 to 2.00 AU. All members of the family are bright E-type asteroids with albedos of around 0.35-0.6.
An asteroid family is a group of physically-related asteroids usually created by a collision with an original larger asteroid, with the fragments continuing on similar orbits to the original. This is distinct from a dynamical group in that the members of a dynamical group only share similar orbits because of gravitational interactions with planets, which concentrate asteroids in a particular orbital range. Members of the Hungaria family are both part of the wider Hungaria dynamical group, and fragments of 434 Hungaria. The family is considered a catastrophic asteroid family because 434 Hungaria, its largest member, makes up only a fifth of the family's mass.[3]
The family has been variously estimated to be 205±45 million years,[4] 275 million years,[5] and 400±100 million years old.[6]
Name | Abs. Mag | Size (km) | proper a (AU) | proper e | proper i |
---|---|---|---|---|---|
434 Hungaria | 11.24 | 11 | 1.9443 | 0.078 | 20.868 |
1103 Sequoia | 12.21 | 6.7 | 1.9336 | 0.083 | 20.847 |
3169 Ostro | 12.86 | 4.7 | 1.8918 | 0.070 | 22.357 |
4031 Mueller | 13.27 | 3.9 | 1.9342 | 0.071 | 20.624 |
3086 Kalbaugh | 13.45 | 4.0 | 1.9358 | 0.048 | 21.800 |
1919 Clemence | 13.58 | 3.3 | 1.9360 | 0.075 | 20.980 |
5390 Huichiming | 13.66 | 3.4 | 1.9391 | 0.059 | 21.111 |
5427 Jensmartin | 13.74 | 3.2 | 1.9317 | 0.085 | 21.162 |
4232 Aparicio | 13.78 | 3.3 | 1.9362 | 0.063 | 20.608 |
5378 Ellyett | 13.81 | 3.0 | 1.9342 | 0.073 | 21.213 |
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