Peter 86

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Star
Gliese 86
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Eridanus
Right ascension 02 h 10 m 25.93 s
declination -50 ° 49 ′ 25.4 ″
Apparent brightness 6.12 likes
Typing
Known exoplanets 1
B − V color index +0.82 
U − B color index +0.45 
R − I index +0.32 
Spectral class K0 V
Astrometry
Radial velocity (55.8 ± 0.2) km / s
parallax (92.74 ± 0.32)  mas
distance (35.2 ± 0.1)  ly
(10.78 ± 0.04)  pc  
Visual absolute brightness M vis +5.96 mag
Proper movement 
Rec. Share: (2092.86 ± 0.27)  mas / a
Dec. portion: (653.21 ± 0.30)  mas / a
Physical Properties
Dimensions 0.79  M ☉
radius 0.855 ± 0.005  R ☉
Effective temperature 5188  K
Metallicity [Fe / H] -0.24
Rotation time 31 d
Age 2.4 × 10 9  a
Other names
and catalog entries
Cordoba Survey CD -51 ° 532
Bright Star Catalog HR 637 [1]
Henry Draper Catalog HD 13445 [2]
Hipparcos catalog HIP 10138 [3]
SAO catalog SAO 232658 [4]
Tycho catalog TYC 8048-1022-1 [5]Template: Infobox star / maintenance / specification of the TYC catalog
Other names LHS 13 • LTT 1130
annotation
  1. ↑ Calculated from apparent brightness and distance.

Gliese 86 (short Gl 86 ) is a primary star (therefore also called Gliese 86 A ) of a binary star system in the constellation Eridanus . It is about 35 light years from Earth and is orbited by two companions. The larger and more distant Gliese 86 B is a white or brown dwarf , the closer and smaller Gliese 86 Ab is a substellar object with at least 4 Jupiter masses.

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. ^ A b Extrasolar Planet in Double Star System Discovered from La Silla , European Southern Observatory. November 24, 1998. Retrieved December 29, 2012. 
  6. ↑ Mamajek, Eric E .; Hillenbrand, Lynne A .: Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics . In: The Astrophysical Journal . 687, No. 2, November 2008, pp. 1264-1293. arxiv : 0807.1686 . bibcode : 2008ApJ ... 687.1264M . doi : 10.1086 / 591785 .
  7. ^ Lagrange et al .: New constrains on Gliese 86 B. VLT near infrared coronographic imaging survey of planetary hosts ; in: Astronomy and Astrophysics, Vol. 459, Issue 3, 2006, pp. 955ff. bibcode : 2006A & A ... 459..955L