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public LocationGreenwich, United Kingdom
Sunrise: 4:42 
Transit: 12:59 
Sunset: 21:16
sunny   (Daytime)   What's Visible Now?

45 Ophiuchi

Below the horizon.  Rise: 21:54 | Tran: 0:48 | Set: 3:46
Altitude: -25.3°   Azimuth: 106.9°   Direction: East-South-East

45 Ophiuchi is a sub-giant star of spectral class F5 in the constellation of Ophiuchus.

45 Ophiuchi visual magnitude is 4.29. Because of its moderate brightness, 45 Ophiuchi is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Celestial coordinates and finder chart of 45 Ophiuchi

Finder chart 45 Ophiuchi star
Simplified finder chart for 45 Ophiuchi.

45 Ophiuchi is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 45 Ophiuchi are provided in the following table:

17h 27m 21s
-29° 52’ 00”
Image of 45 Ophiuchi star
DSS2 image of 45 Ophiuchi. The red arrow shows the motion of 45 Ophiuchi during the next 1000 years (0.33 arcmin in Right Ascension and -2.32 arcmin in declination);

Key facts about 45 Ophiuchi


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.

HR Diagram
H-R diagram showing the position of 45 Ophiuchi. Attribution: Richard Powell / CC BY-SA

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.

34.18 pc
111.41 ly
37 km/s
0.02 arcsec/year
-0.139 arcsec/year

Alternative designations of 45 Ophiuchi

45 Ophiuchi

Visibility of 45 Ophiuchi from your location

Today's 45 Ophiuchi rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):

Azimuth: 119.9°
Max altitude: 8.7°
Azimuth: 240.1°