Home
Search Objects
Major Solar System Objects
Comets
Asteroids
Spacecrafts
Star Maps
Orbits
public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:01 
Transit: 12:56 
Sunset: 20:52
warning Set your observing location to get relevant data
wb_twilight   (Civil Twilight)  
Planets Visible Tonight
Planets Visible Tonight
 • 
What's Visible Now • Tonight Sky
Search  close
All Constellations » Ophiuchus » 

ι Ophiuchi (iota Ophiuchi)

Above the horizon.  Rise: 19:05 | Tran: 1:59 | Set: 8:49
Alt: 18.98°   Az: 97.67°   Direction: East

ι Ophiuchi is a variable main-sequence star of spectral class B8 in the constellation of Ophiuchus.

ι Ophiuchi visual magnitude is 4.38. Because of its moderate brightness, ι 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.

Image of ι Ophiuchi (iota Ophiuchi) star
DSS2 image of ι Ophiuchi. The red arrow shows the motion of ι Ophiuchi during the next 10000 years (-8.50 arcmin in Right Ascension and -6.00 arcmin in declination);

Celestial Coordinates

Apparent

16h 55m 12s
+10° 07’ 31”
19h 11m 17s
12h 06m 30s

J2000

16h 54m 00s
+10° 09’ 55”

Galactic Coordinates

28.73°
30.66°

Finder Chart

loader
  Loading map...
Finder chart for ι Ophiuchi (iota Ophiuchi).

Magnitude, Color, Spectral Class

4.38
Main-sequence

0.10
B8V
11247K

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

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

Distance, Radial Speed, Proper Motion

ι Ophiuchi is distant 233.69 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

71.68
233.69
-21 km/s
-0.051 arcsec/y
-0.036"/y

Alternative Designations

ι Ophiuchi
(iota Ophiuchi)
25 Ophiuchi
SAO102458
SAO102458

Visibility from Your Location

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

Azimuth: 79.9°
Max altitude: 48.6°
Azimuth: 280.1°