Fixed star:  PRINCEPS
Constellation:  Delta Bootes
Longitude 1900:  01SCO45. Longitude 2000:  03SCO09.
Declination 1900:  +33.41'. Declination 2000:  +33.19'.
Right ascension:  15h15m. Latitude:  +48.57'.
Spectral class:  G4. Magnitude:  3.5.

History of the star: A pale yellow star in the spear-shaft of Bootes the Herdsman or Ox-Driver.

Princeps means "Prince" in Latin.

In China it was part of Tseih Kong, "the Seven Princes".

Beta (Nekkar), gamma (Seginus), this star delta (Princeps), and mu (Alkalurops), constituted the trapezium Al Dhi'bah, "the Female Wolves", or perhaps "Hyaenas", an early asterism of the Arabs before they adopted the Greek constellations; these animals, with others similar shown by stars in Draco and near it, lying in wait for the occupants of the ancient Fold around the pole.

[Star Names, Their Lore and Meaning, Richard Hinchley Allen, 1889].

The astrological influences of the constellation: "It is said to give prosperity from work, strong desires, a tendency to excess, a fondness for rural pursuits, together with some liking for occultism. The Kabalists associate it with the Hebrew letter Teth and the 9th Tarot Trump, The Hermit". (Robson*).

The astrological influences of the constellation given by Manilius:

True is the name men have given him (the Bearwarden), threatening-like he presses forward as one does over a team of bullocks. To those born under Arctophylax - Arcturus, fortune herself makes bold to entrust her treasures, so that the wealth of monarchs and temple finances will be in their keeping [custodianship is a suitable endowment for the Bearward]; they will be kings under kings and ministers of state [politicians], and be charged with the guardianship of the people or, as the stewards of grand houses, they will confine their business to the care of another's home. [Translator's note: strictly speaking Arcturus is a star, but the name is used by ancient astrologers for the whole constellation of Bootes and for the star alone, it is often difficult to distinguish which of these the authors are referring to]. [Manilius, Astronomica, 1st century AD, book 5, p.329.]

The general astrological influences of the star: A keen studious and profound mind with the ability for research. (Robson*). 

Rising: Good fortune but troubles, discontent and fear occasioned by own temerity rather than circumstances. (Robson*).

References

*(Fixed Stars and Constellations in Astrology , Vivian E. Robson, 1923)