The Maria family (adj. Marian; FIN: 506; also known as the Roma family) is a collisional asteroid family located in the inner parts of the intermediate asteroid belt, near the 1:3 Kirkwood gap. The family consist of several thousand stony S-type asteroids. It is named after its parent body and lowest numbered member, the asteroid 170 Maria. It is also known as the Roma family, named after its alternative parent body, 472 Roma.
The family was initially identified by Japanese astronomer Kiyotsugu Hirayama in 1918. Asteroids in this family typically have a semi-major axis between 2.52−2.62 AU, and an inclination of 12 to 17°.EasySky – Screenshots
Members
The family consists of 2940 known members based on the HCM method. Its largest members are the asteroids 170 Maria and 472 Roma. A complete synthetic HCM-listing for all members can be obtained by using the Ferret Interactive Search.
+ Parent bodies Name a e i SBDB 170 Maria 2.553 0.065 14.40° 472 Roma 2.545 0.094 15.80°
+ Other large, low numbered members Name a e i SBDB 292 Ludovica 2.529 0.034 14.92° 652 Jubilatrix 2.554 0.127 15.77° 714 Ulula 2.535 0.058 14.27° 787 Moskva 2.539 0.129 14.84° 875 Nymphe 2.552 0.151 14.59° 879 Ricarda 2.531 0.155 13.68° 897 Lysistrata 2.541 0.094 14.32° 1158 Luda 2.564 0.112 14.85° 1215 Boyer 2.578 0.133 15.91° 2089 Cetacea 2.533 0.156 15.39° 3066 McFadden 2.527 0.133 15.57°
Interlopers
Although asteroid 695 Bella has orbital properties that make it a candidate for this family, the spectral properties of the object indicate it is most likely an interloper. Instead, it may have been spalled off from 6 Hebe, or its parent body.
References (Query)