Nihal (star)

from Wikipedia, the free encyclopedia
Star
Nihal (β Leporis)
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Hare
Right ascension 05 h 28 m 14.72 s
declination -20 ° 45 ′ 34 ″
Apparent brightness 2.81 mag
Typing
B − V color index +0.82 
U − B color index +0.46 
R − I index +0.44 
Spectral class G5 II
Astrometry
Radial velocity (−14.2 ± 0.1) km / s
parallax (20.34 ± 0.18)  mas
distance (160 ± 1)  ly
(49.2 ± 0.4)  pc  
Visual absolute brightness M vis −0.65 mag
Proper movement 
Rec. Share: (−5.02 ± 0.18)  mas / a
Dec. portion: (−86.01 ± 0.17)  mas / a
Physical Properties
radius about 12  R ☉
Effective temperature approx. 4700  K
Other names
and catalog entries
Bayer name β leporis
Flamsteed name 9 leporis
Bonn survey BD −20 ° 1096
Bright Star Catalog HR 1829 [1]
Henry Draper Catalog HD 36079 [2]
Hipparcos catalog HIP 25606 [3]
SAO catalog SAO 170457 [4]
Tycho catalog TYC 5928-1657-1 [5]
2MASS catalog 2MASS J05281473-2045338 [6]
Other names Nihal, FK5 204
annotation
  1. ↑ estimated from apparent brightness and distance

Nihal ( Arabic نهال- Camels that quench their thirst ) or Beta Leporis (β Leporis, β Lep for short) is a bright yellow giant of the spectral class G5 II in a double or multiple star. It is the second brightest star in the constellation Lepus , has an apparent magnitude of 2.8 mag and is about 160  light years from Earth. It has 150 times the luminosity of the sun .

The IAU Working Group on Star Names (WGSN) has the historical proper names on July 20, 2016 Nihal defined as standardized proper name for this star.

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. ↑ Bulletin of the IAU Working Group on Star Names, No. 1, July 2016. (PDF) Retrieved November 9, 2016 (English, 184 KiB).