Sualocin - α Delphini (alpha Delphini)

Above the horizon. Rise: 12:59 | Tran: 20:21 | Set: 3:47

Alt: 3.54° Az: 291.45° Direction: West-North-West

Sualocin, also designated as α Delphini (alpha Delphini), is a variable and multiple sub-giant star of spectral class B9 in the constellation of Delphinus.

Sualocin visual magnitude is 3.77. Because of its moderate brightness, Sualocin is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Image of Sualocin - α Delphini (alpha Delphini) star

DSS2 image of Sualocin. The red arrow shows the motion of Sualocin during the next 10000 years (11.00 arcmin in Right Ascension and -0.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 40m 47s

Declination +16° 00’ 02”

Hour Angle 06h 59m 34s

Sideral Time 03h 40m 21s

J2000

Right Ascension 20h 39m 38s

Declination +15° 54’ 42”

Galactic Coordinates

Galactic Longitude 60.3°

Galactic Latitude -15.32°

Finder Chart

Simplified finder chart for Sualocin - α Delphini (alpha Delphini).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 3.77

Class Sub-giant

Absolute magnitude -0.57

Spectral Type B9IV

Color Index (B-V) -0.06

Temperature 10941K

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

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

Star System Properties

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

Main star magnitude 3.77

Secondary star magnitude 11.27

Magnitude difference 7.5

Separation 43.4 arcsec

Distance, Radial Speed, Proper Motion

Sualocin is distant 240.59 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.

Distance (parsec) 73.80

Distance (light year) 240.59

Radial Speed -3 km/s

Proper Motion RA 0.066 arcsec/y

Proper Motion Dec -0.002"/y

Alternative Designations

Proper Name Sualocin

Bayer designation α Delphini
(alpha Delphini)

Flamsteed designation 9 Delphini

Henry Draper Catalogue HD196867

SAO Catalogue SAO106357

Hipparcos Catalogue HIP101958

Durchmusterung Catalogue BD+15 4222

FK5 Catalogue 774

General Catalogue of Variable Stars 13207

Aitken Double Star Catalogue ADS14121

Visibility from Your Location

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

Azimuth: 74.0° RISE 12:59

Max altitude: 54.5° TRANSIT 20:21

Azimuth: 286.0° SET 3:47

Set Location

Other stars in Delphinus