α Microscopii (alpha Microscopii)

Below the horizon. Rise: 4:10 | Tran: 6:22 | Set: 8:34

Alt: -50.36° Az: 83.07° Direction: East

α Microscopii is a variable and double giant star of spectral class G7 in the constellation of Microscopium.

α Microscopii visual magnitude is 4.9. Because of its moderate brightness, α Microscopii 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 α Microscopii (alpha Microscopii) star

DSS2 image of α Microscopii. The red arrow shows the motion of α Microscopii during the next 10000 years (1.67 arcmin in Right Ascension and -4.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 51m 32s

Declination -33° 41’ 02”

Hour Angle 15h 18m 13s

Sidereal Time 12h 09m 46s

J2000

Right Ascension 20h 49m 58s

Declination -33° 46’ 46”

Galactic Coordinates

Galactic Longitude 9.88°

Galactic Latitude -38.26°

Finder Chart

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Finder chart for α Microscopii (alpha Microscopii).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.9

Class Giant

Absolute magnitude -0.44

Spectral Type G7III

Color Index (B-V) 1

Temperature 4743K

The red dot in the diagram below shows where α Microscopii is situated in the Hertzsprung–Russell diagram.

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

Star System Properties

α Microscopii 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 α Microscopii double sysyem:

Main star magnitude 4.9

Secondary star magnitude 9.9

Magnitude difference 5

Separation 20.5 arcsec

Distance, Radial Speed, Proper Motion

α Microscopii is distant 380.40 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

Distance (parsec) 116.69

Distance (light year) 380.40

Radial Speed -15 km/s

Proper Motion RA 0.01 arcsec/y

Proper Motion Dec -0.025"/y

Alternative Designations

Bayer designation α Microscopii
(alpha Microscopii)

Henry Draper Catalogue HD198232

SAO Catalogue SAO212472

Hipparcos Catalogue HIP102831

Durchmusterung Catalogue CD-3414660

General Catalogue of Variable Stars 13329

Visibility from Your Location

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

Azimuth: 123.7° RISE 4:10

Max altitude: 4.8° TRANSIT 6:22

Azimuth: 236.3° SET 8:34

Set Location

Other stars in Microscopium