18 Aquilae

Above the horizon. Rise: 21:05 | Tran: 4:04 | Set: 10:59

Alt: 12.21° Az: 87.43° Direction: East

18 Aquilae is a variable giant star of spectral class B8 in the constellation of Aquila.

18 Aquilae visual magnitude is 5.09. Because of its faintness, 18 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 18 Aquilae. The red arrow shows the motion of 18 Aquilae during the next 10000 years (0.83 arcmin in Right Ascension and -4.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 19h 08m 10s

Declination +11° 06’ 44”

Hour Angle 18h 22m 48s

Sidereal Time 13h 30m 58s

J2000

Right Ascension 19h 06m 58s

Declination +11° 04’ 17”

Galactic Coordinates

Galactic Longitude 44.55°

Galactic Latitude 1.63°

Finder Chart

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Finder chart for 18 Aquilae.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.09

Class Giant

Absolute magnitude -0.87

Spectral Type B8III

Color Index (B-V) -0.07

Temperature 11092K

The red dot in the diagram below shows where 18 Aquilae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 18 Aquilae. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

18 Aquilae is distant 507.00 light years from the Sun and it is moving towards the Sun at the speed of 19 kilometers per second.

Distance (parsec) 155.52

Distance (light year) 507.00

Radial Speed -19 km/s

Proper Motion RA 0.005 arcsec/y

Proper Motion Dec -0.026"/y

Alternative Designations

Flamsteed designation 18 Aquilae

Henry Draper Catalogue HD178125

SAO Catalogue SAO104488

Hipparcos Catalogue HIP93867

Durchmusterung Catalogue BD+10 3787

FK5 Catalogue 3525

General Catalogue of Variable Stars Y Aql

Visibility from Your Location

Today's 18 Aquilae rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 78.9° RISE 21:05

Max altitude: 49.6° TRANSIT 4:04

Azimuth: 281.1° SET 10:59

Set Location

Other stars in Aquila