15 Delphini

Above the horizon. Rise: 15:06 | Tran: 22:09 | Set: 5:16

Alt: 30.87° Az: 109.98° Direction: East-South-East

15 Delphini is a multiple main-sequence star of spectral class F5 in the constellation of Delphinus.

15 Delphini visual magnitude is 5.98. Because of its faintness, 15 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 15 Delphini. The red arrow shows the motion of 15 Delphini during the next 1000 years (0.95 arcmin in Right Ascension and 1.63 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 50m 48s

Declination +12° 38’ 17”

Hour Angle 20h 16m 58s

Sideral Time 17h 07m 46s

J2000

Right Ascension 20h 49m 37s

Declination +12° 32’ 43”

Galactic Coordinates

Galactic Longitude 58.86°

Galactic Latitude -19.23°

Finder Chart

Simplified finder chart for 15 Delphini.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.98

Class Main-sequence

Absolute magnitude 3.63

Spectral Type F5V

Color Index (B-V) 0.43

Temperature 6724K

The red dot in the diagram below shows where 15 Delphini is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 15 Delphini. Attribution: Richard Powell / CC BY-SA

Star System Properties

15 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 15 Delphini double sysyem:

Main star magnitude 5.98

Secondary star magnitude 11.18

Magnitude difference 5.2

Separation 108 arcsec

Distance, Radial Speed, Proper Motion

15 Delphini is distant 96.42 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

Distance (parsec) 29.58

Distance (light year) 96.42

Radial Speed 2 km/s

Proper Motion RA 0.057 arcsec/y

Proper Motion Dec 0.098"/y

Alternative Designations

Flamsteed designation 15 Delphini

Henry Draper Catalogue HD198390

SAO Catalogue SAO106536

Hipparcos Catalogue HIP102805

Durchmusterung Catalogue BD+12 4472

Visibility from Your Location

Today's 15 Delphini rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 77.4° RISE 15:06

Max altitude: 51.2° TRANSIT 22:09

Azimuth: 282.6° SET 5:16

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Delphinus