Maria family

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. ^{[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. 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. 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)