The shloka Ahalya Draupadi Kunti Tara Mandodari tatha panchakanya smare nityam mahapataka nashanam lists 5 kanyas (some also list Sita instead on Kunti).
Here, Tara is Vali's wife (who later married Sugriva) or Brihaspati's wife (who with Chandra had Budha as son)?
As per Five Holy Virgins by Pradip Bhattacharya, Tara in Panchkanya is Vali's wife:
Tara,9 wife of Vali and daughter of the vanara physician Sushena, is the next kanya we meet in the Ramayana.
The end note further clarifies it:
9 Not to be confused with Tara, wife of Brihaspati, preceptor of the gods who elopes with his disciple Chandra, or with Taramati, wife of king Harishchandra in some Puranas and an example of a sati.
