1 Arietis

Above the horizon. Rise: 2:44 | Tran: 10:46 | Set: 18:48

Alt: 55.12° Az: 222.93° Direction: South-West

1 Arietis is a double giant star of spectral class K1 in the constellation of Aries.

1 Arietis visual magnitude is 5.86. Because of its faintness, 1 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 1 Arietis. The red arrow shows the motion of 1 Arietis during the next 10000 years (-2.83 arcmin in Right Ascension and -1.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 01h 51m 33s

Declination +22° 24’ 01”

Hour Angle 01h 39m 39s

Sidereal Time 03h 31m 12s

J2000

Right Ascension 01h 50m 08s

Declination +22° 16’ 31”

Galactic Coordinates

Galactic Longitude 140.39°

Galactic Latitude -38.6°

Finder Chart

Loading map...

Finder chart for 1 Arietis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.86

Class Giant

Absolute magnitude -0.37

Spectral Type K1III

Color Index (B-V) 0.74

Temperature 5468K

The red dot in the diagram below shows where 1 Arietis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 1 Arietis. Attribution: Richard Powell / CC BY-SA

Star System Properties

1 Arietis 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 1 Arietis double sysyem:

Main star magnitude 5.86

Secondary star magnitude 6.96

Magnitude difference 1.1

Separation 2.8 arcsec

Distance, Radial Speed, Proper Motion

1 Arietis is distant 573.94 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

Distance (parsec) 176.06

Distance (light year) 573.94

Radial Speed 3 km/s

Proper Motion RA -0.017 arcsec/y

Proper Motion Dec -0.008"/y

Alternative Designations

Flamsteed designation 1 Arietis

Henry Draper Catalogue HD11154

SAO Catalogue SAO74966

Hipparcos Catalogue HIP8544

Durchmusterung Catalogue BD+21 243

Aitken Double Star Catalogue ADS1457

Visibility from Your Location

Today's 1 Arietis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 67.6° RISE 2:44

Max altitude: 60.9° TRANSIT 10:46

Azimuth: 292.4° SET 18:48

Set Location

Other stars in Aries