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Phocaea family

Family of asteroids

The Phocaea family ( ; adj. Phocaean; FIN: 701) is a collisional family of asteroids located between 2.25 and 2.5 AU in the inner region of the asteroid belt. Phocaea asteroids are of stony S-type composition and have orbits with eccentricities greater than 0.1 and inclinations between 18 and 32°. The family has an estimated age of 2.2 billion years and derives its name from its most massive member, 25 Phocaea which is about 75 km in diameter. Several Phocaean asteroids are also Mars-crossers.

Phocaea family region

The Phocaea family region contains other collisional families such as the recently identified carbonaceous, Tamara family, named after its potentially largest member 326 Tamara. The family has an estimated age of 264 million years. Several clumps around 290 Bruna (Bruna family), 1192 Prisma and 6246 Komurotoru, as well as , and have also been detected.

Members

Name	a	e	i
[25 Phocaea](25-phocaea)	2.400	0.255	21.584°
[1090 Sumida](1090-sumida)	2.360	0.220	21.505°
[4388 Jürgenstock](4388-jurgenstock)	2.339	0.279	24.588°

References

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

phocaea-asteroids asteroid-groups-and-families

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