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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 5:44  
clear_day Transit: 12:03  
SunsetSet: 18:24
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All Constellations » Octans » 

ψ Octantis (psi Octantis)

Altitude: -39.9°   Azimuth: 173.3°   Direction: South

ψ Octantis is a giant star in the constellation of Octans.

ψ Octantis visual magnitude is 5.51. Because of its reltive faintness, ψ Octantis should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of ψ Octantis is -0.041 arcsec per year in Right Ascension and 0.011 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ψ Octantis (psi Octantis) star
DSS2 image of ψ Octantis. The red arrow shows the motion of ψ Octantis during the next 10000 years (-6.83 arcmin in Right Ascension and 1.83 arcmin in declination);

Key facts about ψ Octantis

5.51
Giant

ψ Octantis (psi Octantis) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -39.9°
Azimuth: 173.3°
Direction: South

Celestial coordinates and finder chart of ψ Octantis

ψ Octantis is situated close to the southern celestial pole and, as such, it is easilty visible for most part of the year from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of ψ Octantis are provided in the following table:

22h 17m 50s
-77° 30’ 42”
312.56°
-36.59°
Octans

The simplified sky map below shows the position of ψ Octantis in the sky:

Finder chart ψ Octantis (psi Octantis) star
Simplified finder chart for ψ Octantis (psi Octantis).

Visibility of ψ Octantis from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

ψ Octantis (psi Octantis) is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of ψ Octantis from the Sun and relative movement

ψ Octantis is distant 125.38 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

38.46 pc
125.38 ly
17 km/s
-0.041 arcsec/year
0.011 arcsec/year

Spectral properties of ψ Octantis

ψ Octantis belongs to spectral class F3 and has a luminosity class of III corresponding to a giant star.

2.58
F3III
7399K

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

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

Alternative designations of ψ Octantis

ψ Octantis
(psi Octantis)
SAO258020
SAO258020