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public LocationGreenwich, United Kingdom
TimezoneEurope/London
Sunrise: 5:22 
Transit: 12:55 
Sunset: 20:28
sunny   (Daytime)   What's Visible Now?

1 Centauri

Altitude: -40.5°   Azimuth: 265.5°   Direction: West

1 Centauri is a variable sub-giant star in the constellation of Centaurus.

1 Centauri visual magnitude is 4.23. Because of its moderate brightness, 1 Centauri should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of 1 Centauri is -0.462 arcsec per year in Right Ascension and -0.146 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 1 Centauri star
DSS2 image of 1 Centauri. The red arrow shows the motion of 1 Centauri during the next 1000 years (-7.70 arcmin in Right Ascension and -2.43 arcmin in declination);

Key facts about 1 Centauri

4.23
Sub-giant

1 Centauri is below the horizon from Greenwich, United Kingdom.

Altitude: -40.5°
Azimuth: 265.5°
Direction: West

Celestial coordinates and finder chart of 1 Centauri

1 Centauri is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 1 Centauri are provided in the following table:

13h 45m 41s
-33° 02’ 38”
315.86°
28.46°
Centaurus

The simplified sky map below shows the position of 1 Centauri in the sky:

Finder chart 1 Centauri star
Simplified finder chart for 1 Centauri.

Visibility of 1 Centauri from your location

Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

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

Azimuth: 123.0°
Max altitude: 5.5°
Azimuth: 237.0°

Distance of 1 Centauri from the Sun and relative movement

1 Centauri is distant 62.80 light years from the Sun and it is moving towards the Sun at the speed of 22 kilometers per second.

19.26 pc
62.80 ly
-22 km/s
-0.462 arcsec/year
-0.146 arcsec/year

Spectral properties of 1 Centauri

1 Centauri belongs to spectral class F3 and has a luminosity class of IV corresponding to a sub-giant star.

2.81
F3IV
6989K

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

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

Alternative designations of 1 Centauri

SAO204812
SAO204812
Gl 525.1