417

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Star
gliese 417
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Big Bear
Right ascension 11 h 12 m 32.35 s
declination + 35 ° 48 ′ 50.7 ″
Apparent brightness 6.41 mag
Typing
B − V color index +0.61 
U − B color index +0.10 
Spectral class G0 V
Astrometry
Radial velocity (−3.7 ± 0.1) km / s
parallax (45.61 ± 0.44)  mas
distance (71.51 ± 0.69)  Lj
(21.93 ± 0.21)  pc  
Visual absolute brightness M vis +4.71 mag
Proper movement 
Rec. Share: (−248.91 ± 0.37)  mas / a
Dec. portion: (−150.98 ± 0.34)  mas / a
Physical Properties
Rotation time 7.6 days
Other names
and catalog entries
Bonn survey BD + 36 ° 2162
Bright Star Catalog HR 4345 [1]
Henry Draper Catalog HD 97334 [2]
Hipparcos catalog HIP 54745 [3]
SAO catalog SAO 62451 [4]
Tycho catalog TYC 2522-2245-1 [5]Template: Infobox star / maintenance / specification of the TYC catalog
Other names MN Ursae Majoris • GJ 417
annotation
  1. ↑ Calculated from apparent brightness and distance.

Gliese 417 is a main sequence star of the spectral class G0 in the constellation Great Bear . It has an apparent visual magnitude of 6.4 mag and is about 70 light years from Earth. The star has a companion with the systematic designation Gliese 417 B , which is probably a double system of two orbiting brown dwarfs .

companion

Gliese 417 B is 90 ″ (approx. 2000  AU ) away from the central star and, as seen from Earth, is southwest of it (position angle 245 °). A study published in 2003 by Bouy et al. showed that Gliese 417 B could be two orbiting L-dwarfs with an angular distance of approx. 70 mas (approx. 2 AU).

Sources and individual references

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