Delta Herculis

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Star
δ Herculis (Sarin)
Hercules Historical View.png
Hercules constellation with historical connecting lines; δ Herculis is immediately to the right above the center of the image
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Hercules
Right ascension 17 h 15 m 1.91 s
declination + 24 ° 50 ′ 21.1 ″
Apparent brightness 3.12 mag
Typing
B − V color index +0.08 
U − B color index +0.08 
R − I index +0.03 
Spectral class A3 IV
Astrometry
Radial velocity (−40.0 ± 2.6) km / s
parallax (43.41 ± 0.15)  mas
distance (75.13 ± 0.26)  Lj
(23.04 ± 0.08)  pc  
Visual absolute brightness M vis +1.3 mag
Proper movement 
Rec. Share: (−21.18 ± 0.08)  mas / a
Dec. portion: (−156.48 ± 0.14)  mas / a
Physical Properties
Other names
and catalog entries
Bayer name δ Herculis
Flamsteed name 65 Herculis
Bonn survey BD + 25 ° 3221
Bright Star Catalog HR 6410 [1]
Henry Draper Catalog HD 156164 [2]
Hipparcos catalog HIP 84379 [3]
SAO catalog SAO 84951 [4]
Tycho catalog TYC 2065-1930-1 [5]
annotation
  1. ↑ Estimated from apparent brightness and distance.

δ Herculis (Delta Herculis ) is a star about 75  light-years away with an apparent magnitude of 3.1 mag. It belongs to the spectral type A3 and bears the historical proper name sarin .

Individual evidence

  1. ↑ a b c Hipparcos catalog (ESA 1997)
  2. ↑ a b c Bright Star Catalog
  3. ↑ Pulkovo radial velocities for 35493 HIP stars
  4. ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)