relatively cool 3,679 K, which is what gives it the orange-red hue of an M-type star. It is listed as a suspected variable star that may change by 0.03 in visual magnitude. It has a low projected rotational velocity of , which gives a minimum value for the azimuthal velocity along the star's equator. The abundance of elements other than hydrogen and helium, what astronomers term the star's metallicity, is more than double the abundance in the Sun's photosphere. The star has a high optical linear polarisation that increases from red to blue wavelengths and displays some variability, this has been ascribed to either an asymmetric distribution of dust grains in an envelope expelled from it, or the presence of photometric hot spots. References External links M-type giants Asymptotic-giant-branch stars Suspected variables Ophiuchus (constellation) Ophiuchi, Delta Durchmusterung objects Ophiuchi, 01 146051 079593 6056 Yed Prior