Nu1 Boötis (ν1 Boötis) is an orange-hued
star in the northern
constellation of
Boötes. It has an
apparent visual magnitude of +5.02,[2] which indicates the star is faintly visible to the naked eye. Based upon an annual
parallax shift of 3.89
mas as seen from Earth,[5] it is located roughly 840
light years distant from the
Sun. At that distance, the visual magnitude of the star is diminished by an
extinction of 0.13 due to
interstellar dust.[11]
Ptolemy considered Nu1 Boötis to be shared by
Hercules, and
Bayer assigned it a designation in both constellations: Nu1 Boötis (ν1 Boo) and Psi1 Herculis (ψ1 Her). When the modern constellation boundaries were fixed in 1930, the latter designation dropped from use.[14]
^
abcdJohnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99): 99,
Bibcode:
1966CoLPL...4...99J.
^
abKeenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245,
Bibcode:
1989ApJS...71..245K,
doi:
10.1086/191373.
^Schiavon, Ricardo P. (July 2007), "Population Synthesis in the Blue. IV. Accurate Model Predictions for Lick Indices and UBV Colors in Single Stellar Populations", The Astrophysical Journal Supplement Series, 171 (1): 146–205,
arXiv:astro-ph/0611464,
Bibcode:
2007ApJS..171..146S,
doi:
10.1086/511753,
S2CID13946698.
^Gomez, A. E.; et al. (1997), "Absolute magnitudes and kinematics of barium stars", Astronomy and Astrophysics, 319: 881,
Bibcode:
1997A&A...319..881G.