Rotanev - β Delphini (beta Delphini)

Above the horizon. Rise: 12:52 | Tran: 20:07 | Set: 3:25

Alt: 48.61° Az: 144.09° Direction: South-East

Rotanev, also designated as β Delphini (beta Delphini), is a multiple sub-giant star of spectral class F5 in the constellation of Delphinus.

Rotanev visual magnitude is 3.63. Because of its moderate brightness, Rotanev 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 Rotanev - β Delphini (beta Delphini) star

DSS2 image of Rotanev. The red arrow shows the motion of Rotanev during the next 1000 years (1.88 arcmin in Right Ascension and -0.55 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 38m 42s

Declination +14° 40’ 59”

Hour Angle 22h 25m 28s

Sidereal Time 19h 04m 11s

J2000

Right Ascension 20h 37m 32s

Declination +14° 35’ 43”

Galactic Coordinates

Galactic Longitude 58.88°

Galactic Latitude -15.65°

Finder Chart

Simplified finder chart for Rotanev - β Delphini (beta Delphini).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 3.63

Class Sub-giant

Absolute magnitude 1.25

Spectral Type F5IV

Color Index (B-V) 0.44

Temperature 6674K

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

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

Star System Properties

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

Main star magnitude 3.63

Secondary star magnitude 4.63

Magnitude difference 1

Separation 0.6 arcsec

Distance, Radial Speed, Proper Motion

Rotanev is distant 97.34 light years from the Sun and it is moving towards the Sun at the speed of 23 kilometers per second.

Distance (parsec) 29.86

Distance (light year) 97.34

Radial Speed -23 km/s

Proper Motion RA 0.113 arcsec/y

Proper Motion Dec -0.033"/y

Alternative Designations

Proper Name Rotanev

Bayer designation β Delphini
(beta Delphini)

Flamsteed designation 6 Delphini

Henry Draper Catalogue HD196524

SAO Catalogue SAO106316

Hipparcos Catalogue HIP101769

Durchmusterung Catalogue BD+14 4369

Aitken Double Star Catalogue ADS14073

Visibility from Your Location

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

Azimuth: 75.3° RISE 12:52

Max altitude: 53.2° TRANSIT 20:07

Azimuth: 284.7° SET 3:25

Set Location

Other stars in Delphinus