Diphda - β Ceti (beta Ceti)

Above the horizon. Rise: 21:28 | Tran: 1:55 | Set: 6:18

Alt: 3.86° Az: 234.68° Direction: South-West

Diphda, also designated as β Ceti (beta Ceti), is a variable giant star of spectral class G9 in the constellation of Cetus.

Diphda visual magnitude is 2.04, making it the 51th brightest star in the sky. Because of its brightness, Diphda is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.

Image of Diphda - β Ceti (beta Ceti) star

DSS2 image of Diphda. The red arrow shows the motion of Diphda during the next 1000 years (3.90 arcmin in Right Ascension and 0.55 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 00h 44m 49s

Declination -17° 51’ 05”

Hour Angle 03h 55m 08s

Sideral Time 04h 39m 58s

J2000

Right Ascension 00h 43m 35s

Declination -17° 59’ 12”

Galactic Coordinates

Galactic Longitude 111.31°

Galactic Latitude -80.68°

Finder Chart

Simplified finder chart for Diphda - β Ceti (beta Ceti).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 2.04

Class Giant

Absolute magnitude -0.30

Spectral Type G9III

Color Index (B-V) 1.02

Temperature 4695K

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

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

Distance, Radial Speed, Proper Motion

Diphda is distant 95.77 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

Distance (parsec) 29.38

Distance (light year) 95.77

Radial Speed 13 km/s

Proper Motion RA 0.234 arcsec/y

Proper Motion Dec 0.033"/y

Alternative Designations

Proper Name Diphda

Bayer designation β Ceti
(beta Ceti)

Flamsteed designation 16 Ceti

Henry Draper Catalogue HD4128

SAO Catalogue SAO147420

Hipparcos Catalogue HIP3419

Durchmusterung Catalogue BD-18 115

Gliese Catalogue Gl 31

FK5 Catalogue 22

General Catalogue of Variable Stars 272

Visibility from Your Location

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

Azimuth: 107.9° RISE 21:28

Max altitude: 20.7° TRANSIT 1:55

Azimuth: 252.1° SET 6:18

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

Location

Other stars in Cetus