HD 92788

Coordinates: Sky map 10h 42m 48.5287s, −02° 11′ 01.521″
Source: Wikipedia, the free encyclopedia.
HD 92788
Observation data
Epoch J2000      Equinox J2000
Constellation Sextans
Right ascension 10h 42m 48.52807s[1]
Declination −02° 11′ 01.5221″[1]
Apparent magnitude (V) 7.31[2]
Characteristics
Spectral type G6V[3]
B−V color index 0.694±0.005[2]
Distance
113.1 ± 0.2 ly
(34.69 ± 0.06 pc)
Absolute magnitude (MV)4.56[2]
Details
Gyr
LTT 3928, 2MASS J10424853-0211011[7]
Database references
Exoplanet Archive
data

HD 92788 is a

light years from the Sun based on parallax, but is drifting closer with a radial velocity of −4.5 km/s.[4] Two planets have been found in orbit around the star.[5]

This is a

luminosity of the Sun from its photosphere at an effective temperature of 5,722 K.[1]

Planetary system

An

radial velocity method. Designated component 'b', it is a Super-Jupiter or possibly a low-mass brown dwarf with an orbital period of 0.89 years.[6] The star rotates at an inclination of 8+14
−8 degrees relative to Earth.[8] It is probable that this planet shares that inclination.[9][10]

A low-mass brown dwarf companion was announced in 2019. Designated component 'c', it orbiting with a period of around 27 years and a

semimajor axis of 9.4 AU.[11]

The HD 92788 planetary system[5]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b ≥3.78±0.18 MJ 0.971±0.023 325.72±0.03 0.351±0.004 — —
c
 		≥3.64±0.69 MJ 9.43±0.63 9,857±926 0.18±0.08 — —

See also

  • List of extrasolar planets

References

  1. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  2. ^
    S2CID 119257644
    .
  3. ^
    Bibcode:1999MSS...C05....0H
    .
  4. ^
    S2CID 52952408
    .
  5. ^
    doi:10.1093/mnras/stz290
    .
  6. ^
    doi:10.1086/320224
    .
  7. ^ "HD 92788". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-04-02.
  8. S2CID 6708869
    .
  9. ^ "hd_92788_b". Extrasolar Planets Encyclopaedia. Retrieved November 12, 2012.
  10. S2CID 38743202
    .
  11. S2CID 91184450
    . A71.

External links


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