45 Ophiuchi is a sub-giant star in the constellation of Ophiuchus.
45 Ophiuchi visual magnitude is 4.29. Because of its moderate brightness, 45 Ophiuchi should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.
The table below summarizes the key facts about 45 Ophiuchi:
Celestial coordinates and finder chart of 45 Ophiuchi
45 Ophiuchi is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 45 Ophiuchi are provided in the following table:
The simplified sky map below shows the position of 45 Ophiuchi in the sky:
Visibility of 45 Ophiuchi from your location
Digitized Sky Survey image of 45 Ophiuchi
The image below is a photograph of 45 Ophiuchi from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 45 Ophiuchi is 0.02 arcsec per year in Right Ascension and -0.139 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of 45 Ophiuchi from the Sun and relative movement
45 Ophiuchi is distant 111.41 light years from the Sun and it is moving far from the Sun at the speed of 37 kilometers per second.
Spectral properties of 45 Ophiuchi
45 Ophiuchi belongs to spectral class F5 and has a luminosity class of IV corresponding to a sub-giant star.
The red dot in the diagram below shows where 45 Ophiuchi is situated in the Hertzsprung–Russell diagram.