38 bootis

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Star
38 bootis
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Bear keeper
Right ascension 14 h 49 m 18.67 s
declination + 46 ° 06 ′ 58.3 ″
Apparent brightness 5.74 likes
Typing
B − V color index +0.48 
U − B color index +0.00 
Spectral class F6 IVs
Astrometry
Radial velocity (−4.5 ± 0.2) km / s
parallax (20.41 ± 0.28)  mas
distance (160 ± 2)  ly
(49.0 ± 0.7)  pc  
Visual absolute brightness M vis approx. +2.3 mag
Proper movement 
Rec. Share: (−6.73 ± 0.28)  mas / a
Dec. portion: (−77.06 ± 0.29)  mas / a
Physical Properties
Other names
and catalog entries
Bayer name h bootis
Flamsteed name 38 bootis
Bonn survey BD + 46 ° 1993
Bright Star Catalog HR 5533 [1]
Henry Draper Catalog HD 130945 [2]
Hipparcos catalog HIP 72487 [3]
SAO catalog SAO 45226 [4]
Tycho catalog TYC 3474-1062-1 [5]

38 Bootis is a star in the Bear Keeper constellation . It has an apparent magnitude of 5.7 and belongs to the spectral class F6 IVs. The distance of the barely visible star is about 160  light years .

The star bears the historical proper name Merga (from Arabic المرأة المسلسلة, DMG al-marʾa al-musalsala ; also "Falx Italica" or "Marrha").

Individual evidence

  1. ^ 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)
  5. ↑ estimated from apparent brightness and distance