AB Pictoris

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Star
AB Pictoris
The Star AB Pictoris and its Companion - Phot-14d-05-normal.jpg
Photo of the VLT-NACO by AB Pictoris, covered by a mask, and his companion in the lower left.
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation painter
Right ascension 06 h 19 m 12.91 s
declination -58 ° 03 ′ 15.5 ″
Apparent brightness 9.13 mag
Typing
B − V color index +0.86 
Spectral class K1 Ve
Astrometry
Radial velocity (+22.6 ± 0.3) km / s
parallax (21.97 ± 0.82)  mas
distance (148 ± 6)  ly
(45.5 ± 1.7)  pc  
Proper movement 
Rec. Share: (14.36 ± 0.74)  mas / a
Dec. portion: (44.66 ± 0.84)  mas / a
Physical Properties
Other names
and catalog entries
Cordoba Survey CD −58 ° 1409
Henry Draper Catalog HD 44627 [1]
Hipparcos catalog HIP 30034 [2]
SAO catalog SAO 234448 [3]
Tycho catalog TYC 8542-384-1 [4]Template: Infobox star / maintenance / specification of the TYC catalog

AB Pictoris ( AB Pic for short ) is a variable star in the painter constellation . It is around 150 light years away and a member of the Tucana Horologium Association .

In 2003 a companion was discovered whose mass, around 13 times the mass of Jupiter, lies in the border area between the planet and the brown dwarf ; it is about 260  AU from AB Pictoris.

Individual evidence

  1. ↑ a b c d M. AC Perryman et al. a .: The HIPPARCOS Catalog. In: Astronomy and Astrophysics . 323, 1997, bibcode : 1997A & A ... 323L..49P .
  2. ↑ a b c d C. AO Torres et al .: Search for associations containing young stars (SACY). I. Sample and searching method. In: Astronomy and Astrophysics. 460, No. 3, December 2006, pp. 695-708 ( doi : 10.1051 / 0004-6361: 20065602 ).
  3. ↑ Inseok Song, B. Zuckerman, M. S. Bessell: New Members of the TW Hydrae Association, β Pictoris Moving Group, and Tucana / Horologium Association. In: The Astrophysical Journal. 599, No. 1, 2003, pp. 342-350 ( doi : 10.1086 / 379194 ).
  4. ^ G. Chauvin et al .: A companion to ABPic at the planet / brown dwarf boundary. In: Astronomy & Astrophysics. 438, 2005 ( doi : 10.1051 / 0004-6361: 200500111 ).