21 Ceti

Above the horizon. Rise: 20:43 | Tran: 2:01 | Set: 7:16

Alt: 16.48° Az: 128.49° Direction: South-East

21 Ceti is a sub-giant star of spectral class G5 in the constellation of Cetus.

21 Ceti visual magnitude is 6.16. Because of its faintness, 21 Ceti 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 21 Ceti. The red arrow shows the motion of 21 Ceti during the next 10000 years (3.00 arcmin in Right Ascension and -8.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 00h 55m 32s

Declination -08° 36’ 25”

Hour Angle 20h 42m 27s

Sideral Time 21h 37m 59s

J2000

Right Ascension 00h 54m 17s

Declination -08° 44’ 26”

Galactic Coordinates

Galactic Longitude 125.17°

Galactic Latitude -71.6°

Finder Chart

Simplified finder chart for 21 Ceti.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.16

Class Sub-giant

Absolute magnitude 0.83

Spectral Type G5IV

Color Index (B-V) 0.92

Temperature 4943K

The red dot in the diagram below shows where 21 Ceti is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 21 Ceti. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

21 Ceti is distant 379.07 light years from the Sun and it is moving far from the Sun at the speed of 45 kilometers per second.

Distance (parsec) 116.28

Distance (light year) 379.07

Radial Speed 45 km/s

Proper Motion RA 0.018 arcsec/y

Proper Motion Dec -0.052"/y

Alternative Designations

Flamsteed designation 21 Ceti

Henry Draper Catalogue HD5268

SAO Catalogue SAO129019

Hipparcos Catalogue HIP4257

Durchmusterung Catalogue BD-09 181

Visibility from Your Location

Today's 21 Ceti rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 98.6° RISE 20:43

Max altitude: 29.9° TRANSIT 2:01

Azimuth: 261.4° SET 7:16

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Cetus