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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 6:27 
Transit: 12:57 
Sunset: 19:26
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All Constellations » Cetus » 

Mira - ο Ceti (omicron Ceti)

Below the horizon.  Rise: 22:18 | Tran: 4:05 | Set: 9:49
Alt: -1.43°   Az: 92.80°   Direction: East

Mira, also designated as ο Ceti (omicron Ceti), is a variable and multiple giant star of spectral class M7 in the constellation of Cetus.

Mira visual magnitude is 3.04. Because of its moderate brightness, Mira 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 Mira - ο Ceti (omicron Ceti) star
DSS2 image of Mira. The red arrow shows the motion of Mira during the next 1000 years (-0.13 arcmin in Right Ascension and -3.95 arcmin in declination);

Celestial Coordinates

Apparent

02h 20m 35s
-02° 51’ 53”
18h 05m 12s
20h 25m 47s

J2000

02h 19m 20s
-02° 58’ 39”

Galactic Coordinates

167.75°
-57.98°

Finder Chart

Finder chart Mira - ο Ceti (omicron Ceti) star
Simplified finder chart for Mira - ο Ceti (omicron Ceti).

Magnitude, Color, Spectral Class

3.04
Giant

-2.50
M7III
3918K

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

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

Star System Properties

Mira 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 Mira double sysyem:

3.04
10.34
7.3
118.7 arcsec

Distance, Radial Speed, Proper Motion

Mira is distant 418.49 light years from the Sun and it is moving far from the Sun at the speed of 64 kilometers per second.

128.37
418.49
64 km/s
-0.008 arcsec/y
-0.237"/y

Alternative Designations

Mira
ο Ceti
(omicron Ceti)
SAO129825
SAO129825

Visibility from Your Location

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

Azimuth: 92.9°
Max altitude: 35.7°
Azimuth: 267.1°