Beta Gruis

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Star
β Gruis
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation crane
Right ascension 22 h 42 m 40.05 s
declination -46 ° 53 ′ 4.5 ″
Apparent brightness 2.07 mag
Typing
B − V color index +1.60 
U − B color index +1.67 
R − I index +1.65 
Spectral class M5 III
Variable star type SRB 
Astrometry
Radial velocity (−0.3 ± 0.3) km / s
parallax (18.43 ± 0.42)  mas
distance (177 ± 4)  ly
(54.3 ± 1.2)  pc  
Visual absolute brightness M vis −1.6 mag
Proper movement 
Rec. Share: (+135.16 ± 0.44)  mas / a
Dec. portion: (−4.38 ± 0.31)  mas / a
Physical Properties
Luminosity

vis. 350  L ☉

Other names
and catalog entries
Bayer name β Gruis
Cordoba Survey CD −47 ° 14308
Bright Star Catalog HR 8636 [1]
Henry Draper Catalog HD 214952 [2]
Hipparcos catalog HIP 112122 [3]
SAO catalog SAO 231258 [4]
Tycho catalog TYC 8446-1644-1 [5]
2MASS catalog 2MASS J22424003-4653044 [6]
Other names Tiaki • CPD -47 ° 9896 • FK5  856 • GCRV 14260 • GSC  08446-01644 • IRAS 22396-4708 • UBV 21723
annotation
  1. ↑ estimated using the apparent brightness and distance

Beta Gruis (β Gruis) is a star in the constellation Crane . It has an apparent brightness of 2.1 mag and belongs to the spectral class M5 III, which makes it one of the 100 brightest stars in the night sky.

The star was named Tiaki on September 5, 2017 by the IAU .

Web links

Individual evidence

  1. ↑ a b c d Hipparcos catalog (ESA 1997)
  2. ↑ a b c Bright Star Catalog
  3. ↑ bet Gru. In: VSX. AAVSO, accessed September 29, 2018 .
  4. ↑ Pulkovo radial velocities for 35493 HIP stars
  5. ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)