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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
sunny DaytimeWhat's Visible Now?
All Constellations » Grus » 

σ1 Gruis (sigma1 Gruis)

Altitude: -10.6°   Azimuth: 145.8°   Direction: South-East

σ1 Gruis is a main-sequence star in the constellation of Grus.

σ1 Gruis visual magnitude is 6.28. Because of its reltive faintness, σ1 Gruis should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of σ1 Gruis is 0.048 arcsec per year in Right Ascension and -0.07 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of σ1 Gruis (sigma1 Gruis) star
DSS2 image of σ1 Gruis. The red arrow shows the motion of σ1 Gruis during the next 10000 years (8.00 arcmin in Right Ascension and -11.67 arcmin in declination);

Key facts about σ1 Gruis

6.28
Main-sequence

σ1 Gruis (sigma1 Gruis) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -10.6°
Azimuth: 145.8°
Direction: South-East

Celestial coordinates and finder chart of σ1 Gruis

σ1 Gruis 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 σ1 Gruis are provided in the following table:

22h 36m 29s
-40° 34’ 58”
358.33°
-59.17°
Grus

The simplified sky map below shows the position of σ1 Gruis in the sky:

Finder chart σ1 Gruis (sigma1 Gruis) star
Simplified finder chart for σ1 Gruis (sigma1 Gruis).

Visibility of σ1 Gruis from your location

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

σ1 Gruis (sigma1 Gruis) is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of σ1 Gruis from the Sun and relative movement

σ1 Gruis is distant 226.23 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

69.40 pc
226.23 ly
1 km/s
0.048 arcsec/year
-0.07 arcsec/year

Spectral properties of σ1 Gruis

σ1 Gruis belongs to spectral class A3 and has a luminosity class of V corresponding to a main-sequence star.

2.07
A3V
8839K

The red dot in the diagram below shows where σ1 Gruis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of σ1 Gruis. Attribution: Richard Powell / CC BY-SA

Alternative designations of σ1 Gruis

σ1 Gruis
(sigma1 Gruis)
SAO231211
SAO231211