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

12 Ophiuchi

Above the horizon.  Rise: 18:07 | Tran: 23:53 | Set: 5:43
Altitude: 35.8°   Azimuth: 170.0°   Direction: South

12 Ophiuchi is a variable main-sequence star of spectral class K2 in the constellation of Ophiuchus.

12 Ophiuchi visual magnitude is 5.75. Because of its faintness, 12 Ophiuchi is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Celestial coordinates and finder chart of 12 Ophiuchi

Finder chart 12 Ophiuchi star
Simplified finder chart for 12 Ophiuchi.

12 Ophiuchi is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 12 Ophiuchi are provided in the following table:

16h 36m 21s
-02° 19’ 28”
Image of 12 Ophiuchi star
DSS2 image of 12 Ophiuchi. The red arrow shows the motion of 12 Ophiuchi during the next 1000 years (7.63 arcmin in Right Ascension and -5.17 arcmin in declination);

Key facts about 12 Ophiuchi


and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 12 Ophiuchi is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 12 Ophiuchi. Attribution: Richard Powell / CC BY-SA

Distance of 12 Ophiuchi from the Sun and relative movement

12 Ophiuchi is distant 31.88 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

9.78 pc
31.88 ly
-15 km/s
0.458 arcsec/year
-0.31 arcsec/year

Alternative designations of 12 Ophiuchi

12 Ophiuchi

Visibility of 12 Ophiuchi from your location

Today's 12 Ophiuchi rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):

Azimuth: 92.3°
Max altitude: 36.2°
Azimuth: 267.7°