ψ Ophiuchi (psi Ophiuchi)

Above the horizon. Rise: 18:18 | Tran: 22:28 | Set: 2:42

Alt: 4.11° Az: 230.23° Direction: South-West

ψ Ophiuchi is a hypergiant star of spectral class K0 in the constellation of Ophiuchus.

ψ Ophiuchi visual magnitude is 4.5. Because of its moderate brightness, ψ 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.

DSS2 image of ψ Ophiuchi. The red arrow shows the motion of ψ Ophiuchi during the next 10000 years (-4.50 arcmin in Right Ascension and -7.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 25m 36s

Declination -20° 05’ 41”

Hour Angle 03h 38m 54s

Sidereal Time 20h 04m 30s

J2000

Right Ascension 16h 24m 06s

Declination -20° 02’ 15”

Galactic Coordinates

Galactic Longitude 356.17°

Galactic Latitude 20.18°

Finder Chart

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Finder chart for ψ Ophiuchi (psi Ophiuchi).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.5

Class Hypergiant

Absolute magnitude 0.81

Spectral Type K0II

Color Index (B-V) 1.01

Temperature 4719K

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

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

Distance, Radial Speed, Proper Motion

ψ Ophiuchi is distant 177.95 light years from the Sun

Distance (parsec) 54.59

Distance (light year) 177.95

Proper Motion RA -0.027 arcsec/y

Proper Motion Dec -0.047"/y

Alternative Designations

Bayer designation ψ Ophiuchi
(psi Ophiuchi)

Flamsteed designation 4 Ophiuchi

Henry Draper Catalogue HD147700

SAO Catalogue SAO159892

Hipparcos Catalogue HIP80343

Durchmusterung Catalogue BD-19 4365

Visibility from Your Location

Today's ψ Ophiuchi (psi Ophiuchi) rise, transit and set times from Crostwitz, Germany are the following (all times relative to the local timezone Europe/Berlin):

Azimuth: 110.1° RISE 18:18

Max altitude: 18.7° TRANSIT 22:28

Azimuth: 249.9° SET 2:42

Name:	Crostwitz, Germany
Latitude:	51° 13' 59.9" N
Longitude:	14° 15' 0.0" E
Timezone:	Europe/Berlin

Set Location

Other stars in Ophiuchus