57 Aquilae

Below the horizon. Rise: 15:42 | Tran: 20:59 | Set: 2:19

Alt: -10.29° Az: 90.22° Direction: East

57 Aquilae is a double main-sequence star of spectral class B8 in the constellation of Aquila.

57 Aquilae visual magnitude is 6.49. Because of its faintness, 57 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 57 Aquilae. The red arrow shows the motion of 57 Aquilae during the next 10000 years (3.50 arcmin in Right Ascension and -4.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 19h 55m 58s

Declination -08° 10’ 15”

Hour Angle 17h 34m 51s

Sideral Time 13h 30m 49s

J2000

Right Ascension 19h 54m 38s

Declination -08° 14’ 13”

Galactic Coordinates

Galactic Longitude 32.65°

Galactic Latitude -17.77°

Finder Chart

Simplified finder chart for 57 Aquilae.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.49

Class Main-sequence

Absolute magnitude 1.27

Spectral Type B8V

Color Index (B-V) -0.04

Temperature 10653K

The red dot in the diagram below shows where 57 Aquilae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 57 Aquilae. Attribution: Richard Powell / CC BY-SA

Star System Properties

57 Aquilae is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 57 Aquilae double sysyem:

Main star magnitude 6.49

Secondary star magnitude 7.29

Magnitude difference 0.8

Separation 35.7 arcsec

Distance, Radial Speed, Proper Motion

57 Aquilae is distant 361.42 light years from the Sun and it is moving towards the Sun at the speed of 5 kilometers per second.

Distance (parsec) 110.86

Distance (light year) 361.42

Radial Speed -5 km/s

Proper Motion RA 0.021 arcsec/y

Proper Motion Dec -0.027"/y

Alternative Designations

Flamsteed designation 57 Aquilae

Henry Draper Catalogue HD188294

SAO Catalogue SAO143899

Hipparcos Catalogue HIP97967

Durchmusterung Catalogue BD-08 5155

Aitken Double Star Catalogue ADS13087

Visibility from Your Location

Today's 57 Aquilae rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 98.2° RISE 15:42

Max altitude: 30.3° TRANSIT 20:59

Azimuth: 261.8° SET 2:19

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

Location

Other stars in Aquila