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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:15 
Transit: 12:47 
Sunset: 18:17
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All Constellations » Ophiuchus » 

37 Ophiuchi

Above the horizon.  Rise: 10:06 | Tran: 16:58 | Set: 23:50
Alt: 48.83°   Az: 171.70°   Direction: South

37 Ophiuchi is a double giant star of spectral class M2 in the constellation of Ophiuchus.

37 Ophiuchi visual magnitude is 5.33. Because of its faintness, 37 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.

Image of 37 Ophiuchi star
DSS2 image of 37 Ophiuchi. The red arrow shows the motion of 37 Ophiuchi during the next 10000 years (0.17 arcmin in Right Ascension and -4.33 arcmin in declination);

Celestial Coordinates

Apparent

17h 13m 37s
+10° 33’ 25”
23h 37m 47s
16h 51m 25s

J2000

17h 12m 27s
+10° 35’ 07”

Galactic Coordinates

31.38°
26.74°

Finder Chart

Finder chart 37 Ophiuchi star
Simplified finder chart for 37 Ophiuchi.

Magnitude, Color, Spectral Class

5.33
Giant

-1.55
M2III
3663K

The red dot in the diagram below shows where 37 Ophiuchi is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 37 Ophiuchi. Attribution: Richard Powell / CC BY-SA

Star System Properties

37 Ophiuchi is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 37 Ophiuchi double sysyem:

5.33
14.03
8.7
30.3 arcsec

Distance, Radial Speed, Proper Motion

37 Ophiuchi is distant 776.19 light years from the Sun and it is moving far from the Sun at the speed of 26 kilometers per second.

238.10
776.19
26 km/s
0.001 arcsec/y
-0.026"/y

Alternative Designations

37 Ophiuchi
SAO102646
SAO102646

Visibility from Your Location

Today's 37 Ophiuchi rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 79.4°
Max altitude: 49.1°
Azimuth: 280.6°