51 Aquilae

Below the horizon. Rise: 9:37 | Tran: 14:40 | Set: 19:44

Alt: -43.03° Az: 319.90° Direction: North-West

51 Aquilae is a double hypergiant star of spectral class F0 in the constellation of Aquila.

51 Aquilae visual magnitude is 5.39. Because of its faintness, 51 Aquilae 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 51 Aquilae. The red arrow shows the motion of 51 Aquilae during the next 10000 years (-5.00 arcmin in Right Ascension and 5.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 19h 52m 09s

Declination -10° 41’ 55”

Hour Angle 10h 05m 27s

Sidereal Time 05h 57m 36s

J2000

Right Ascension 19h 50m 46s

Declination -10° 45’ 48”

Galactic Coordinates

Galactic Longitude 29.83°

Galactic Latitude -18°

Finder Chart

Loading map...

Finder chart for 51 Aquilae.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.39

Class Hypergiant

Absolute magnitude 3.28

Spectral Type F0V

Color Index (B-V) 0.38

Temperature 6989K

The red dot in the diagram below shows where 51 Aquilae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 51 Aquilae. Attribution: Richard Powell / CC BY-SA

Star System Properties

51 Aquilae 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 51 Aquilae double sysyem:

Main star magnitude 5.39

Secondary star magnitude 13.39

Magnitude difference 8

Separation 21.1 arcsec

Distance, Radial Speed, Proper Motion

51 Aquilae is distant 86.11 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.

Distance (parsec) 26.41

Distance (light year) 86.11

Radial Speed 6 km/s

Proper Motion RA -0.03 arcsec/y

Proper Motion Dec 0.033"/y

Alternative Designations

Flamsteed designation 51 Aquilae

Henry Draper Catalogue HD187532

SAO Catalogue SAO163036

Hipparcos Catalogue HIP97650

Durchmusterung Catalogue BD-11 5149

FK5 Catalogue 744

Aitken Double Star Catalogue ADS13017

Visibility from Your Location

Today's 51 Aquilae rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 100.7° RISE 9:37

Max altitude: 27.8° TRANSIT 14:40

Azimuth: 259.3° SET 19:44

Set Location

Other stars in Aquila