HD 102956 b

HD 102956 b / Isagel
Artist's impression HD 102956 b
Discovery[1]
Discovered byJohnson et al.
Discovery siteKeck Observatory
Discovery date2010
Doppler spectroscopy
Orbital characteristics[2]
0.0807±0.0073 AU
Eccentricity0.037±0.019
6.49470±0.00019 d
2455351.45±0.64 JD
301±33 º
Semi-amplitude74.6±1.8 m/s
StarHD 102956
Physical characteristics[2]
Mass≥0.960±0.023 MJ
HD 102956
Observation data
Epoch J2000      Equinox J2000
Constellation Ursa Major
Right ascension 11h 51m 22.5111s[3]
Declination +57° 38′ 26.6427″[3]
Characteristics
Evolutionary stage Main sequence
Spectral type A
Astrometry
Radial velocity (Rv)−25±83 km/s
Proper motion (μ) RA: −11.24±0.049[3] mas/yr
Dec.: −17.578±0.049[3] mas/yr
Parallax (π)8.1753 ± 0.0290 mas[3]
Distance399 ± 1 ly
(122.3 ± 0.4 pc)
Absolute magnitude (MV)2.5
Details
Mass1.68±0.11 M☉
Radius4.4±0.1 R☉
Luminosity (visual, LV)11.6±0.5 L☉
Temperature5054±44 K
Metallicity [Fe/H]+0.19±0.04 dex
Rotational velocity (v sin i)0.30 km/s
Other designations
BD+58 1340, HIP 57820, SAO 28161, TYC 3839-00846-1, 2MASS J11512253+5738267[4]
Database references
SIMBADdata
Exoplanet Archivedata

HD 102956 b or Isagel is an extrasolar planet discovered in 2010 by a team of American astronomers led by John Johnson using Doppler spectroscopy and the Keck Observatory in Hawaii. HD 102956 b is in the orbit of host star HD 102956. The planet is at most the mass of Jupiter, orbiting every 6.5 days at a distance of 12 million km. HD 202956 b has a very circular orbit.[1] The system is roughly 399 light years from us.

  1. ^ a b Cite error: The named reference Johnson2010 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Luhn2019 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Simbad was invoked but never defined (see the help page).