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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:30 
Transit: 12:14 
Sunset: 16:58
sunny   (Daytime)  
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All Constellations » Ophiuchus » 

ζ Ophiuchi (zeta Ophiuchi)

Below the horizon.  Rise: 2:27 | Tran: 7:31 | Set: 12:35
Alt: -26.70°   Az: 287.50°   Direction: West-North-West

ζ Ophiuchi is a variable main-sequence star of spectral class O9 in the constellation of Ophiuchus.

ζ Ophiuchi visual magnitude is 2.56. Because of its brightness, ζ Ophiuchi is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.

Image of ζ Ophiuchi (zeta Ophiuchi) star
DSS2 image of ζ Ophiuchi. The red arrow shows the motion of ζ Ophiuchi during the next 10000 years (2.33 arcmin in Right Ascension and 4.33 arcmin in declination);

Celestial Coordinates

Apparent

16h 38m 32s
-10° 36’ 58”
07h 59m 36s
00h 38m 08s

J2000

16h 37m 09s
-10° 34’ 01”

Galactic Coordinates

6.28°
23.59°

Finder Chart

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Finder chart for ζ Ophiuchi (zeta Ophiuchi).

Magnitude, Color, Spectral Class

2.56
Main-sequence

-3.18
O9V
9882K

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

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

Distance, Radial Speed, Proper Motion

ζ Ophiuchi is distant 457.87 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

140.45
457.87
-15 km/s
0.014 arcsec/y
0.026"/y

Alternative Designations

ζ Ophiuchi
(zeta Ophiuchi)
13 Ophiuchi
SAO160006
SAO160006

Visibility from Your Location

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

Azimuth: 100.6°
Max altitude: 27.9°
Azimuth: 259.4°