HR251

Below the horizon. Rise: 21:00 | Tran: 0:38 | Set: 4:20

Alt: -11.18° Az: 115.74° Direction: East-South-East

HR251 is a double sub-giant star of spectral class F6 in the constellation of Cetus.

HR251 visual magnitude is 6.46. Because of its faintness, HR251 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 HR251. The red arrow shows the motion of HR251 during the next 1000 years (1.63 arcmin in Right Ascension and 0.62 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 00h 54m 25s

Declination -24° 38’ 34”

Hour Angle 18h 54m 05s

Sideral Time 19h 48m 30s

J2000

Right Ascension 00h 53m 12s

Declination -24° 46’ 36”

Galactic Coordinates

Galactic Longitude 132.59°

Galactic Latitude -87.62°

Finder Chart

Simplified finder chart for HR251.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.46

Class Sub-giant

Absolute magnitude 2.10

Spectral Type F6IV

Color Index (B-V) 0.44

Temperature 6674K

The red dot in the diagram below shows where HR251 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR251. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR251 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR251 double sysyem:

Main star magnitude 6.46

Secondary star magnitude 8.96

Magnitude difference 2.5

Separation 5.4 arcsec

Distance, Radial Speed, Proper Motion

HR251 is distant 242.74 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

Distance (parsec) 74.46

Distance (light year) 242.74

Radial Speed -4 km/s

Proper Motion RA 0.098 arcsec/y

Proper Motion Dec 0.037"/y

Alternative Designations

Henry Draper Catalogue HD5156

SAO Catalogue SAO166651

Hipparcos Catalogue HIP4164

Durchmusterung Catalogue CD-25 338

Aitken Double Star Catalogue ADS733

Visibility from Your Location

Today's HR251 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 114.6° RISE 21:00

Max altitude: 13.9° TRANSIT 0:38

Azimuth: 245.4° SET 4:20

Set Location

Other stars in Cetus