Family Types
As previously mentioned, families caused by an impact that did not disrupt the parent body but only ejected fragments are called cratering families. Other terminology has been used to distinguish various types of groups which are less distinct or less statistically certain from the most prominent "nominal families" (or clusters). The term cluster is also used to describe a small asteroid family, such as the Karin Cluster. Clumps are groupings which have relatively few members but are clearly distinct from the background (e.g. the Juno clump). Clans are groupings which merge very gradually into the background density and/or have a complex internal structure making it difficult to decide whether they are one complex group or several unrelated overlapping groups (e.g. the Flora family has been called a clan). Tribes are groups that are less certain to be statistically significant against the background either because of small density or large uncertainty in the orbital parameters of the members.
Read more about this topic: Asteroid Family
Famous quotes containing the words family and/or types:
“Every family should extend First Amendment rights to all its members, but this freedom is particularly essential for our kids. Children must be able to say what they think, openly express their feelings, and ask for what they want and need if they are ever able to develop an integrated sense of self. They must be able to think their own thoughts, even if they differ from ours. They need to have the opportunity to ask us questions when they don’t understand what we mean.”
—Stephanie Martson (20th century)
“He types his laboured column—weary drudge!
Senile fudge and solemn:
Spare, editor, to condemn
These dry leaves of his autumn.”
—Robertson Davies (b. 1913)