13 Delphini

Below the horizon. Rise: 23:20 | Tran: 5:52 | Set: 12:21

Alt: -19.82° Az: 309.36° Direction: North-West

13 Delphini is a variable and double hypergiant star of spectral class A0 in the constellation of Delphinus.

13 Delphini visual magnitude is 5.58. Because of its faintness, 13 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 13 Delphini. The red arrow shows the motion of 13 Delphini during the next 10000 years (1.67 arcmin in Right Ascension and -1.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 49m 03s

Declination +06° 06’ 11”

Hour Angle 08h 51m 57s

Sidereal Time 05h 41m 00s

J2000

Right Ascension 20h 47m 48s

Declination +06° 00’ 29”

Galactic Coordinates

Galactic Longitude 52.78°

Galactic Latitude -22.5°

Finder Chart

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Finder chart for 13 Delphini.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.58

Class Hypergiant

Absolute magnitude -0.41

Spectral Type A0V

Color Index (B-V) -0.02

Temperature 10382K

The red dot in the diagram below shows where 13 Delphini is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 13 Delphini. Attribution: Richard Powell / CC BY-SA

Star System Properties

13 Delphini is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the 13 Delphini double sysyem:

Main star magnitude 5.58

Secondary star magnitude 9.18

Magnitude difference 3.6

Separation 1.4 arcsec

Distance, Radial Speed, Proper Motion

13 Delphini is distant 513.39 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

Distance (parsec) 157.48

Distance (light year) 513.39

Radial Speed -7 km/s

Proper Motion RA 0.01 arcsec/y

Proper Motion Dec -0.006"/y

Alternative Designations

Flamsteed designation 13 Delphini

Henry Draper Catalogue HD198069

SAO Catalogue SAO126222

Hipparcos Catalogue HIP102633

Durchmusterung Catalogue BD+05 4613

General Catalogue of Variable Stars 13299

Aitken Double Star Catalogue ADS14293

Visibility from Your Location

Today's 13 Delphini rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 83.9° RISE 23:20

Max altitude: 44.6° TRANSIT 5:52

Azimuth: 276.1° SET 12:21

Set Location

Other stars in Delphinus