Atria

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Stern
atria (α Trianguli Australis)
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Southern triangle
Right ascension 16 h 48 m 39.9 s
declination -69 ° 01 ′ 39.8 ″
Apparent brightness 1.91 likes
Typing
B − V color index +1.44 
U − B color index +1.56 
Spectral class K2 IIb-IIIa
Astrometry
Radial velocity (−3.0 ± 0.1) km / s
parallax (8.35 ± 0.15)  mas
distance (391 ± 7)  ly
(120 ± 2)  pc  
Visual absolute brightness M vis −3.5 mag
Proper movement 
Rec. Share: (+17.99 ± 0.11)  mas / a
Dec. portion: (−31.58 ± 0.15)  mas / a
Physical Properties
Luminosity

2400  L ☉

Other names
and catalog entries
Bayer name α Trianguli Australis
Cordoba Survey CD −68 ° 1762
Bright Star Catalog HR 6217 [1]
Henry Draper Catalog HD 150798 [2]
Hipparcos catalog HIP 82273 [3]
SAO catalog SAO 253700 [4]
Tycho catalog TYC 9275-3641-1 [5]
2MASS catalog 2MASS J16483989-6901398 [6]
Other names FK5 625 • GCRV 9640 • IRAS 16433-6856 • PLX 3802.00 • UBV 14160

Atria is the proper name of the star α Trianguli Australis (Alpha Trianguli Australis ). The name is an artificial word from the Bayer designation ( A lpha Tri anguli A ustralis). Atria belongs to the spectral class K2 and is about 400 light years away.

See also

Web links

Individual evidence

  1. ↑ a b c d 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 based on apparent brightness and distance