The Phocaea family ( ; adj. Phocaean; ) is a collisional family of asteroids located between 2.25 and 2.5AU 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 75km 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

References