HR7907

Above the horizon. Rise: 13:33 | Tran: 20:29 | Set: 3:29

Alt: 44.47° Az: 142.27° Direction: South-East

HR7907 is a double sub-giant star of spectral class F8 in the constellation of Delphinus.

HR7907 visual magnitude is 6.42. Because of its faintness, HR7907 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 HR7907. The red arrow shows the motion of HR7907 during the next 10000 years (10.00 arcmin in Right Ascension and 14.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 41m 02s

Declination +11° 20’ 18”

Hour Angle 22h 14m 13s

Sideral Time 18h 55m 16s

J2000

Right Ascension 20h 39m 51s

Declination +11° 14’ 58”

Galactic Coordinates

Galactic Longitude 56.31°

Galactic Latitude -17.99°

Finder Chart

Simplified finder chart for HR7907.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.42

Class Sub-giant

Absolute magnitude 3.83

Spectral Type F8IV

Color Index (B-V) 0.55

Temperature 6170K

The red dot in the diagram below shows where HR7907 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7907. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR7907 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 HR7907 double sysyem:

Main star magnitude 6.42

Secondary star magnitude 10.42

Magnitude difference 4

Separation 191.9 arcsec

Distance, Radial Speed, Proper Motion

HR7907 is distant 107.56 light years from the Sun and it is moving towards the Sun at the speed of 28 kilometers per second.

Distance (parsec) 32.99

Distance (light year) 107.56

Radial Speed -28 km/s

Proper Motion RA 0.06 arcsec/y

Proper Motion Dec 0.088"/y

Alternative Designations

Henry Draper Catalogue HD196885

SAO Catalogue SAO106360

Hipparcos Catalogue HIP101966

Durchmusterung Catalogue BD+10 4351

Visibility from Your Location

Today's HR7907 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 78.7° RISE 13:33

Max altitude: 49.9° TRANSIT 20:29

Azimuth: 281.3° SET 3:29

Set Location

Other stars in Delphinus