Gliese 86

Gliese 86
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Eridanus
Gliese 86 A
Right ascension 02h 10m 25.9191s[1]
Declination −50° 49′ 25.4672″[1]
Apparent magnitude (V) 6.17[2]
Gliese 86 B
Right ascension 02h 10m 26s
Declination −50° 49′ 25″
Characteristics
Spectral type K1V[3] + DQ6[4][5]
U−B color index 0.45
B−V color index 0.812[6]
V−R color index 0.45
R−I color index 0.40
Astrometry
Radial velocity (Rv)56.7[7] km/s
Proper motion (μ) RA: 2,124.853±0.075[1] mas/yr
Dec.: 638.092±0.063[1] mas/yr
Parallax (π)92.7042 ± 0.0454 mas[1]
Distance35.18 ± 0.02 ly
(10.787 ± 0.005 pc)
Absolute magnitude (MV)5.95[8]
Orbit[4]
PrimaryGliese 86 A
CompanionGliese 86 B
Period (P)≈100 yr
Semi-major axis (a)23.7 au
Eccentricity (e)0.429
Inclination (i)126.44°
Longitude of the node (Ω)234.2°
Details[9]
Gliese 86 A
Mass0.83±0.05 M☉
Radius0.79±0.03 R☉
Surface gravity (log g)4.56±0.10 cgs
Temperature5180±80 K
Metallicity [Fe/H]−0.27±0.07 dex
Rotational velocity (v sin i)2.0±1.0 km/s
Age10±1 Gyr
Gliese 86 B
Mass0.5425[4] M☉
Temperature8180±120[5] K
Other designations
Gliese 86A: CD−51°532, HD 13445, HIP 10138, HR 637, SAO 232658, WDS J02104-5049A[10]
Gliese 86B: GJ 86 B, HD 13445B, WDS J02104-5049B, WD 0208-510[11]
Database references
SIMBADdata
Exoplanet Archivedata
ARICNSdata

Gliese 86 (13 G. Eridani, HD 13445) is a K-type main-sequence star approximately 35 light-years away in the constellation of Eridanus. It has been confirmed that a white dwarf orbits the primary star. In 1998 the European Southern Observatory announced that an extrasolar planet was orbiting the star.[12]

  1. ^ a b c d e Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference spectral_library_gj86A was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference aj132_1_161 was invoked but never defined (see the help page).
  4. ^ a b c Zeng, Yunlin; Brandt, Timothy D.; Li, Gongjie; Dupuy, Trent J.; Li, Yiting; Brandt, G. Mirek; Farihi, Jay; Horner, Jonathan; Wittenmyer, Robert A.; Butler, R. Paul.; Tinney, Christopher G.; Carter, Bradley D.; Wright, Duncan J.; Jones, Hugh R. A.; o'Toole, Simon J. (2022). "The Gliese 86 Binary System: A Warm Jupiter Formed in a Disk Truncated at ≈2 au". The Astronomical Journal. 164 (5): 188. arXiv:2112.06394. Bibcode:2022AJ....164..188Z. doi:10.3847/1538-3881/ac8ff7. S2CID 252872318.
  5. ^ a b "Open Exoplanet Catalogue, Gliese 86". Archived from the original on 2020-07-14. Retrieved 2020-07-13.
  6. ^ Cite error: The named reference van Leeuwen2007 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference apj764_1_78 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Holmberg2009 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Fuhrmann2014 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Simbad for A was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Simbad for B was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference eso9855 was invoked but never defined (see the help page).