γ1 Delphini (gamma1 Delphini)

Below the horizon. Rise: 20:42 | Tran: 4:09 | Set: 11:32

Alt: -19.25° Az: 336.02° Direction: North-North-West

γ1 Delphini is a double main-sequence star of spectral class F7 in the constellation of Delphinus.

γ1 Delphini visual magnitude is 5.14. Because of its faintness, γ1 Delphini 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.

Image of γ1 Delphini (gamma1 Delphini) star

DSS2 image of γ1 Delphini. The red arrow shows the motion of γ1 Delphini during the next 1000 years (-0.50 arcmin in Right Ascension and -3.18 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 47m 49s

Declination +16° 13’ 08”

Hour Angle 10h 25m 48s

Sidereal Time 07h 13m 37s

J2000

Right Ascension 20h 46m 38s

Declination +16° 07’ 27”

Galactic Coordinates

Galactic Longitude 61.49°

Galactic Latitude -16.57°

Finder Chart

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Finder chart for γ1 Delphini (gamma1 Delphini).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.14

Class Main-sequence

Absolute magnitude 2.64

Spectral Type F7V

Color Index (B-V) 0.49

Temperature 6435K

The red dot in the diagram below shows where γ1 Delphini is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of γ1 Delphini. Attribution: Richard Powell / CC BY-SA

Star System Properties

γ1 Delphini 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 γ1 Delphini double sysyem:

Main star magnitude 5.14

Secondary star magnitude 6.14

Magnitude difference 1

Separation 9.8 arcsec

Distance, Radial Speed, Proper Motion

γ1 Delphini is distant 102.87 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

Distance (parsec) 31.56

Distance (light year) 102.87

Radial Speed -7 km/s

Proper Motion RA -0.03 arcsec/y

Proper Motion Dec -0.191"/y

Alternative Designations

Bayer designation γ1 Delphini
(gamma1 Delphini)

Flamsteed designation 12 Delphini

Henry Draper Catalogue HD197963

SAO Catalogue SAO106475

Hipparcos Catalogue HIP102531

Durchmusterung Catalogue BD+15 4255

Aitken Double Star Catalogue ADS14279

Visibility from Your Location

Today's γ1 Delphini (gamma1 Delphini) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 73.8° RISE 20:42

Max altitude: 54.7° TRANSIT 4:09

Azimuth: 286.2° SET 11:32

Set Location

Other stars in Delphinus