Arcturus

α Boo

K1.5III Boötes Mag -0.05

目前可見度

高度角

5.9°

方位角

290.1°

bright

目前位置

屬性數值
Right Ascension (J2000)14h15m38s
Declination (J2000)+19°10'21"
Altitude5.86°
Azimuth290.11°
Hour Angle06h36m06s
ConstellationBootes
Visibilitybright

物理特性

屬性數值
Visual Magnitude-0.05
Spectral ClassK1.5III
Color Index (B-V)1.23
Distance36.7 light-years
Parallax88.85 mas
Proper Motion (RA)-1093.45 mas/yr
Proper Motion (Dec)-1999.40 mas/yr
Radial Velocity-5.2 km/s

星表編號

目錄編號
Hipparcos (HIP)69673
Bright Star Catalogue (HR)5340
Henry Draper (HD)124897
SAO100944
Bayer Designationα Boo
Flamsteed Designation16 Boo

升起、落下與過中天

事件時間 / 數值
Rise Time17:54
Transit Time01:07 (altitude: 69.1°)
Set Time08:16