μ Arietis (mu Arietis)

Below the horizon. Rise: 2:21 | Tran: 10:08 | Set: 17:55

Alt: -6.87° Az: 315.05° Direction: North-West

μ Arietis is a multiple hypergiant star of spectral class A0 in the constellation of Aries.

μ Arietis visual magnitude is 5.69. Because of its faintness, μ Arietis 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.

DSS2 image of μ Arietis. The red arrow shows the motion of μ Arietis during the next 10000 years (4.83 arcmin in Right Ascension and -7.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 02h 43m 48s

Declination +20° 07’ 08”

Hour Angle 08h 46m 41s

Sidereal Time 11h 30m 29s

J2000

Right Ascension 02h 42m 21s

Declination +20° 00’ 42”

Galactic Coordinates

Galactic Longitude 155.53°

Galactic Latitude -35.74°

Finder Chart

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Finder chart for μ Arietis (mu Arietis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.69

Class Hypergiant

Absolute magnitude 0.61

Spectral Type A0V

Color Index (B-V) -0.02

Temperature 10382K

The red dot in the diagram below shows where μ Arietis is situated in the Hertzsprung–Russell diagram.

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

Star System Properties

μ Arietis is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the μ Arietis double sysyem:

Main star magnitude 5.69

Secondary star magnitude 6.49

Magnitude difference 0.8

Separation 0.1 arcsec

Distance, Radial Speed, Proper Motion

μ Arietis is distant 338.17 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

Distance (parsec) 103.73

Distance (light year) 338.17

Radial Speed -7 km/s

Proper Motion RA 0.029 arcsec/y

Proper Motion Dec -0.043"/y

Alternative Designations

Bayer designation μ Arietis
(mu Arietis)

Flamsteed designation 34 Arietis

Henry Draper Catalogue HD16811

SAO Catalogue SAO93062

Hipparcos Catalogue HIP12640

Durchmusterung Catalogue BD+19 403

Aitken Double Star Catalogue ADS2062

Visibility from Your Location

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

Azimuth: 69.9° RISE 2:21

Max altitude: 58.6° TRANSIT 10:08

Azimuth: 290.1° SET 17:55

Set Location

Other stars in Aries