HR31

Below the horizon. Rise: 19:05 | Tran: 23:59 | Set: 4:57

Alt: -17.10° Az: 88.59° Direction: East

HR31 is a hypergiant star of spectral class K0 in the constellation of Cetus.

HR31 visual magnitude is 5.85. Because of its faintness, HR31 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of HR31. The red arrow shows the motion of HR31 during the next 1000 years (2.50 arcmin in Right Ascension and -0.63 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 00h 11m 58s

Declination -12° 26’ 32”

Hour Angle 17h 12m 20s

Sideral Time 17h 24m 19s

J2000

Right Ascension 00h 10m 42s

Declination -12° 34’ 48”

Galactic Coordinates

Galactic Longitude 87.69°

Galactic Latitude -72.6°

Finder Chart

Simplified finder chart for HR31.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.85

Class Hypergiant

Absolute magnitude 1.78

Spectral Type K0IV

Color Index (B-V) 1.01

Temperature 4719K

The red dot in the diagram below shows where HR31 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR31. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR31 is distant 212.38 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.

Distance (parsec) 65.15

Distance (light year) 212.38

Radial Speed 6 km/s

Proper Motion RA 0.15 arcsec/y

Proper Motion Dec -0.038"/y

Alternative Designations

Henry Draper Catalogue HD645

SAO Catalogue SAO147127

Hipparcos Catalogue HIP873

Durchmusterung Catalogue BD-13 13

FK5 Catalogue 2008

Visibility from Your Location

Today's HR31 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 102.4° RISE 19:05

Max altitude: 26.1° TRANSIT 23:59

Azimuth: 257.6° SET 4:57

Set Location

Other stars in Cetus