Vesta was the fourth asteroid to be discovered, in 1807, and is the brightest of them, occasionally visible to the naked eye under dark skies. It is named for the Roman goddess of the hearth, whose sacred flame was tended by the Vestal Virgins and was never allowed to go out.
Astrologically Vesta is about devotion: what someone protects and gives themselves to wholeheartedly, which is often a calling, a craft or a cause as much as a person. It describes where attention becomes focused and where energy is guarded, and it is traditionally linked with the pull between a sacred commitment and closeness with other people.
Its sign and house show where that focus lives, and its aspects show what feeds the flame or puts it under strain.