HR3979

Above the horizon. Rise: 0:29 | Tran: 9:51 | Set: 19:09

Alt: 59.22° Az: 118.08° Direction: East-South-East

HR3979 is a multiple main-sequence star of spectral class F4 in the constellation of Leo Minor.

HR3979 visual magnitude is 6.24. Because of its faintness, HR3979 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 HR3979. The red arrow shows the motion of HR3979 during the next 10000 years (-13.83 arcmin in Right Ascension and -13.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 10h 09m 41s

Declination +31° 28’ 55”

Hour Angle 21h 52m 08s

Sideral Time 08h 01m 50s

J2000

Right Ascension 10h 08m 15s

Declination +31° 36’ 15”

Galactic Coordinates

Galactic Longitude 195.72°

Galactic Latitude 54.37°

Finder Chart

Simplified finder chart for HR3979.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.24

Class Main-sequence

Absolute magnitude 2.23

Spectral Type F4V

Color Index (B-V) 0.45

Temperature 6625K

The red dot in the diagram below shows where HR3979 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR3979. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR3979 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 HR3979 double sysyem:

Main star magnitude 6.24

Secondary star magnitude 6.54

Magnitude difference 0.3

Separation 0.2 arcsec

Distance, Radial Speed, Proper Motion

HR3979 is distant 206.33 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

Distance (parsec) 63.29

Distance (light year) 206.33

Radial Speed -8 km/s

Proper Motion RA -0.083 arcsec/y

Proper Motion Dec -0.08"/y

Alternative Designations

Henry Draper Catalogue HD87822

SAO Catalogue SAO61882

Hipparcos Catalogue HIP49658

Durchmusterung Catalogue BD+32 1982

Aitken Double Star Catalogue ADS7651

Visibility from Your Location

Today's HR3979 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 58.5° RISE 0:29

Max altitude: 70.0° TRANSIT 9:51

Azimuth: 301.5° SET 19:09

Set Location

Other stars in Leo Minor