2.74
Apparent Mag170
Distance (ly)M0.5III
Spectral Type3,679
Temperature (K)Delta Ophiuchi, also known as Yed Prior, is a red giant in Ophiuchus.
Stellar Data
Apparent Magnitude2.74
Absolute Magnitude-0.9
Distance170 light-years
Spectral TypeM0.5III
Temperature3,679 K
Luminosity330 L☉
Radius59 R☉
Mass1.5 M☉
Right Ascension16h 14m 20.7s
Declination-03° 41′ 39.6″
ConstellationOphiuchus
Notable Facts
- Also known as Yed Prior meaning the hand first
- It forms a pair with Epsilon Ophiuchi (Yed Posterior)
- The star is a modest M-type giant