The Maria family (adj. Marian; FIN: 506; also known as 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.[1][2]: 23  It is also known as the Roma family, named after its alternative parent body, 472 Roma.[3]

The family was initially identified by Japanese astronomer Kiyotsugu Hirayama in 1918.[1] Asteroids in this family typically have a semi-major axis between 2.52−2.62 AU, and an inclination of 12 to 17°.[4]

Members

The family consists of 2940 known members based on the HCM method. Its largest members are the asteroids 170 Maria and 472 Roma.[2]: 23  A complete synthetic HCM-listing for all members can be obtained by using the Ferret Interactive Search.[5]

Parent bodies [2]: 23 
Name a e i SBDB
170 Maria 2.553 0.065 14.40° JPL
472 Roma 2.545 0.094 15.80° JPL
Other large, low numbered members [1]
Name a e i SBDB
292 Ludovica 2.529 0.034 14.92° JPL
652 Jubilatrix 2.554 0.127 15.77° JPL
714 Ulula 2.535 0.058 14.27° JPL
787 Moskva 2.539 0.129 14.84° JPL
875 Nymphe 2.552 0.151 14.59° JPL
879 Ricarda 2.531 0.155 13.68° JPL
897 Lysistrata 2.541 0.094 14.32° JPL
1158 Luda 2.564 0.112 14.85° JPL
1215 Boyer 2.578 0.133 15.91° JPL
2089 Cetacea 2.533 0.156 15.39° JPL
3066 McFadden 2.527 0.133 15.57° JPL

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.[1]

References

  1. ^ a b c d Fieber-Beyer, Sherry K.; Gaffey, Michael J.; Kelley, Michael S.; Reddy, Vishnu; Reynolds, Chalbeth M.; Hicks, Tony (June 2011). "The Maria asteroid family: Genetic relationships and a plausible source of mesosiderites near the 3:1 Kirkwood Gap". Icarus. 213 (2): 524–537. Bibcode:2011Icar..213..524F. doi:10.1016/j.icarus.2011.03.009. Retrieved 25 April 2018.
  2. ^ a b c Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.
  3. ^ Masiero, Joseph R.; Mainzer, A. K.; Bauer, J. M.; Grav, T.; Nugent, C. R.; Stevenson, R. (June 2013). "Asteroid Family Identification Using the Hierarchical Clustering Method and WISE/NEOWISE Physical Properties". The Astrophysical Journal. 770 (1): 22. arXiv:1305.1607. Bibcode:2013ApJ...770....7M. doi:10.1088/0004-637X/770/1/7.
  4. ^ EasySky – Screenshots
  5. ^ "Small Bodies Data Ferret". Synthetic Family (170) Maria – Nesvorny HCM Asteroid Families V3.0. Archived from the original on 2 August 2017. Retrieved 22 July 2017. (Query)
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