Altair

α Aql

A7V Aquila Mag 0.76

Current Visibility

ความสูง

-25.6°

อะซิมุท

308.7°

below_horizon

Current Position

PropertyValue
Right Ascension (J2000)19h50m47s
Declination (J2000)+08°52'12"
Altitude-25.58°
Azimuth308.67°
Hour Angle08h59m26s
ConstellationAquila
Visibilitybelow_horizon

Physical Properties

PropertyValue
Visual Magnitude0.76
Spectral ClassA7V
Color Index (B-V)0.22
Distance16.7 light-years
Parallax194.44 mas
Proper Motion (RA)536.82 mas/yr
Proper Motion (Dec)385.54 mas/yr
Radial Velocity-26.1 km/s

Catalog Designations

แคตตาล็อกDesignation
Hipparcos (HIP)97649
Bright Star Catalogue (HR)7557
Henry Draper (HD)187642
SAO125122
Bayer Designationα Aql
Flamsteed Designation53 Aql

Rise, Set & Transit

เหตุการณ์ท้องฟ้าTime / Value
Rise Time18:04
Transit Time00:40 (altitude: 59.0°)
Set Time07:12