κ Ophiuchi (kappa Ophiuchi)

Above the horizon. Rise: 12:00 | Tran: 18:45 | Set: 1:35

Alt: 42.65° Az: 143.43° Direction: South-East

κ Ophiuchi is a variable giant star of spectral class K2 in the constellation of Ophiuchus.

κ Ophiuchi visual magnitude is 3.2. Because of its moderate brightness, κ 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 κ Ophiuchi (kappa Ophiuchi) star

DSS2 image of κ Ophiuchi. The red arrow shows the motion of κ Ophiuchi during the next 1000 years (-4.85 arcmin in Right Ascension and -0.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 58m 50s

Declination +09° 20’ 18”

Hour Angle 22h 14m 32s

Sideral Time 15h 13m 23s

J2000

Right Ascension 16h 57m 40s

Declination +09° 22’ 30”

Galactic Coordinates

Galactic Longitude 28.37°

Galactic Latitude 29.5°

Finder Chart

Simplified finder chart for κ Ophiuchi (kappa Ophiuchi).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 3.2

Class Giant

Absolute magnitude 1.10

Spectral Type K2III

Color Index (B-V) 1.15

Temperature 4409K

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

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

Distance, Radial Speed, Proper Motion

κ Ophiuchi is distant 85.81 light years from the Sun and it is moving towards the Sun at the speed of 56 kilometers per second.

Distance (parsec) 26.32

Distance (light year) 85.81

Radial Speed -56 km/s

Proper Motion RA -0.291 arcsec/y

Proper Motion Dec -0.01"/y

Alternative Designations

Bayer designation κ Ophiuchi
(kappa Ophiuchi)

Flamsteed designation 27 Ophiuchi

Henry Draper Catalogue HD153210

SAO Catalogue SAO121962

Hipparcos Catalogue HIP83000

Durchmusterung Catalogue BD+09 3298

FK5 Catalogue 633

General Catalogue of Variable Stars Kap Oph

Visibility from Your Location

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

Azimuth: 80.7° RISE 12:00

Max altitude: 47.9° TRANSIT 18:45

Azimuth: 279.3° SET 1:35

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

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Location

Other stars in Ophiuchus