ρ Gruis (rho Gruis)

Below the horizon. Never rises today

Alt: -2.93° Az: 184.85° Direction: South

ρ Gruis is a double hypergiant star of spectral class K0 in the constellation of Grus.

ρ Gruis visual magnitude is 4.85. Because of its moderate brightness, ρ Gruis 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.

DSS2 image of ρ Gruis. The red arrow shows the motion of ρ Gruis during the next 1000 years (0.10 arcmin in Right Ascension and -1.58 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 22h 44m 57s

Declination -41° 16’ 50”

Hour Angle 00h 25m 49s

Sidereal Time 23h 10m 47s

J2000

Right Ascension 22h 43m 30s

Declination -41° 24’ 51”

Galactic Coordinates

Galactic Longitude 356°

Galactic Latitude -60.2°

Finder Chart

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Finder chart for ρ Gruis (rho Gruis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.85

Class Hypergiant

Absolute magnitude 0.69

Spectral Type K0III

Color Index (B-V) 1.03

Temperature 4672K

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

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

Star System Properties

ρ Gruis 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 ρ Gruis double sysyem:

Main star magnitude 4.85

Secondary star magnitude 13.95

Magnitude difference 9.1

Separation 14.2 arcsec

Distance, Radial Speed, Proper Motion

ρ Gruis is distant 221.62 light years from the Sun and it is moving far from the Sun at the speed of 29 kilometers per second.

Distance (parsec) 67.98

Distance (light year) 221.62

Radial Speed 29 km/s

Proper Motion RA 0.006 arcsec/y

Proper Motion Dec -0.095"/y

Alternative Designations

Bayer designation ρ Gruis
(rho Gruis)

Henry Draper Catalogue HD215104

SAO Catalogue SAO231265

Hipparcos Catalogue HIP112203

Durchmusterung Catalogue CD-4216049

FK5 Catalogue 3818

Visibility from Your Location

ρ Gruis (rho Gruis) is currently not visible from Greenwich, UK

Set Location

Other stars in Grus