Edasich

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Star
Edasich (ι Draconis)
Artist's impression of the red giant with its exoplanet
Artist's impression of the red giant with its exoplanet
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Dragon
Right ascension 15 h 24 m 55.78 s
declination + 58 ° 57 ′ 57.8 ″
Apparent brightness 3.29 mag
Typing
Known exoplanets 1
B − V color index +1.16 
U − B color index +1.22 
R − I index +0.60 
Spectral class K2 III
Astrometry
Radial velocity (−10.7 ± 0.3) km / s
parallax (32.23 ± 0.10)  mas
distance (101.20 ± 0.31)  Lj
(31.027 ± 0.096)  pc  
Visual absolute brightness M vis +0.83 mag
Proper movement 
Rec. Share: (−8.36 ± 0.08)  mas / a
Dec. portion: (17.08 ± 0.10)  mas / a
Physical Properties
Dimensions (1.05)  M ☉
Effective temperature (4530 ± 100)  K.
Metallicity [Fe / H] (0.29 ± 0.20)
Other names
and catalog entries
Bayer name ι Draconis
Flamsteed name 12 Draconis
Bonn survey BD + 59 ° 1654
Bright Star Catalog HR 5744 [1]
Henry Draper Catalog HD 137759 [2]
Hipparcos catalog HIP 75458 [3]
SAO catalog SAO 29520 [4]
Tycho catalog TYC 3875-1620-1 [5]
2MASS catalog 2MASS J15245578 + 5857577 [6]
Other names Edasich, FK5  571
annotation
  1. ↑ Calculated from apparent brightness and distance.

Edasich ("hyena") is the proper name of the star ι Draconis ( Iota Draconis ). Iota Draconis is a giant of the spectral class K2 and has an apparent magnitude of 3.31 mag. About 100 light years away, it is orbited by at least one exoplanet , which was discovered in 2001 and officially named Hypatia by the IAU in 2015 .

Web links

Commons : Iota Draconis  - Collection of images, videos and audio files

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)
  5. ↑ a b c iot Dra. NASA Exoplanet Archives , accessed March 7, 2020 .