λ Octantis (lambda Octantis)

Below the horizon. Never rises today

Alt: -45.19° Az: 188.55° Direction: South-South-West

λ Octantis is a double giant star of spectral class G8 in the constellation of Octans.

λ Octantis visual magnitude is 5.29. Because of its faintness, λ Octantis is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Image of λ Octantis (lambda Octantis) star

DSS2 image of λ Octantis. The red arrow shows the motion of λ Octantis during the next 10000 years (9.67 arcmin in Right Ascension and -6.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 21h 54m 31s

Declination -82° 35’ 55”

Hour Angle 08h 22m 20s

Sidereal Time 06h 16m 52s

J2000

Right Ascension 21h 50m 54s

Declination -82° 43’ 09”

Galactic Coordinates

Galactic Longitude 309.02°

Galactic Latitude -32.13°

Finder Chart

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Finder chart for λ Octantis (lambda Octantis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.29

Class Giant

Absolute magnitude -0.34

Spectral Type G8III

Color Index (B-V) 0.75

Temperature 5436K

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

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

Star System Properties

λ Octantis is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the λ Octantis double sysyem:

Main star magnitude 5.29

Secondary star magnitude 7.59

Magnitude difference 2.3

Separation 2.8 arcsec

Distance, Radial Speed, Proper Motion

λ Octantis is distant 435.25 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

Distance (parsec) 133.51

Distance (light year) 435.25

Radial Speed -11 km/s

Proper Motion RA 0.058 arcsec/y

Proper Motion Dec -0.036"/y

Alternative Designations

Bayer designation λ Octantis
(lambda Octantis)

Henry Draper Catalogue HD206240

SAO Catalogue SAO258914

Hipparcos Catalogue HIP107843

Durchmusterung Catalogue CP-83 722

Visibility from Your Location

λ Octantis (lambda Octantis) is currently not visible from Avis, United States

Name:	Avis, United States
Latitude:	41° 11' 5.3" N
Longitude:	77° 18' 50.0" W
Timezone:	America/New_York

Set Location

Other stars in Octans