17 Delphini

Above the horizon. Rise: 13:15 | Tran: 20:25 | Set: 3:38

Alt: 8.16° Az: 281.96° Direction: West-North-West

17 Delphini is a variable hypergiant star of spectral class K0 in the constellation of Delphinus.

17 Delphini visual magnitude is 5.17. Because of its faintness, 17 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.

DSS2 image of 17 Delphini. The red arrow shows the motion of 17 Delphini during the next 10000 years (3.50 arcmin in Right Ascension and -2.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 56m 47s

Declination +13° 49’ 02”

Hour Angle 06h 17m 00s

Sidereal Time 03h 13m 47s

J2000

Right Ascension 20h 55m 36s

Declination +13° 43’ 17”

Galactic Coordinates

Galactic Longitude 60.77°

Galactic Latitude -19.74°

Finder Chart

Simplified finder chart for 17 Delphini.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.17

Class Hypergiant

Absolute magnitude -0.64

Spectral Type K0III

Color Index (B-V) 1.12

Temperature 4472K

The red dot in the diagram below shows where 17 Delphini is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 17 Delphini. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

17 Delphini is distant 473.84 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

Distance (parsec) 145.35

Distance (light year) 473.84

Radial Speed -10 km/s

Proper Motion RA 0.021 arcsec/y

Proper Motion Dec -0.014"/y

Alternative Designations

Flamsteed designation 17 Delphini

Henry Draper Catalogue HD199253

SAO Catalogue SAO106665

Hipparcos Catalogue HIP103294

Durchmusterung Catalogue BD+13 4572

FK5 Catalogue 3669

General Catalogue of Variable Stars 13408

Visibility from Your Location

Today's 17 Delphini rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 76.2° RISE 13:15

Max altitude: 52.3° TRANSIT 20:25

Azimuth: 283.8° SET 3:38

Set Location

Other stars in Delphinus