μ2 Octantis (mu2 Octantis)

Below the horizon. Never rises today

Alt: -53.34° Az: 181.88° Direction: South-South-West

μ2 Octantis is a double giant star of spectral class G5 in the constellation of Octans.

μ2 Octantis visual magnitude is 6.55. Because of its faintness, μ2 Octantis is not visible to the naked eye.

Image of μ2 Octantis (mu2 Octantis) star

DSS2 image of μ2 Octantis. The red arrow shows the motion of μ2 Octantis during the next 1000 years (2.35 arcmin in Right Ascension and -2.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 44m 40s

Declination -75° 15’ 28”

Hour Angle 11h 42m 17s

Sidereal Time 08h 26m 58s

J2000

Right Ascension 20h 41m 43s

Declination -75° 21’ 02”

Galactic Coordinates

Galactic Longitude 318.45°

Galactic Latitude -33.05°

Finder Chart

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Finder chart for μ2 Octantis (mu2 Octantis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.55

Class Giant

Absolute magnitude 3.35

Spectral Type G5III

Color Index (B-V) 0.62

Temperature 5890K

The red dot in the diagram below shows where μ2 Octantis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of μ2 Octantis. Attribution: Richard Powell / CC BY-SA

Star System Properties

μ2 Octantis is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the μ2 Octantis double sysyem:

Main star magnitude 6.55

Secondary star magnitude 7.15

Magnitude difference 0.6

Separation 17 arcsec

Distance, Radial Speed, Proper Motion

μ2 Octantis is distant 142.05 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

Distance (parsec) 43.57

Distance (light year) 142.05

Radial Speed -13 km/s

Proper Motion RA 0.141 arcsec/y

Proper Motion Dec -0.15"/y

Alternative Designations

Bayer designation μ2 Octantis
(mu2 Octantis)

Henry Draper Catalogue HD196067

SAO Catalogue SAO257836

Hipparcos Catalogue HIP102125

Durchmusterung Catalogue CP-75 1644

Visibility from Your Location

μ2 Octantis (mu2 Octantis) is currently not visible from Trappe, United States

Name:	Trappe, United States
Latitude:	38° 39' 30.6" N
Longitude:	76° 3' 28.8" W
Timezone:	America/New_York

Set Location

Other stars in Octans