HD 86081

Coordinates: Sky map 09h 56m 05.9183s, −03° 48′ 30.318″
Source: Wikipedia, the free encyclopedia.
HIP 86081 / Bibhā
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Sextans
Right ascension 09h 56m 05.91853s[1]
Declination −03° 48′ 30.3233″[1]
Apparent magnitude (V) 8.73[2]
Characteristics
Spectral type G1V[3]
B−V color index 0.664±0.026[2]
Distance
340 ± 2 ly
(104.2 ± 0.6 pc)
Absolute magnitude (MV)3.86[2]
Details
Gyr
HIP 48711, SAO 137236[6]
Database references
SIMBADdata

HD 86081 is a yellow-hued

light years from the Sun based on parallax, and is drifting further away with a radial velocity of +31 km/s.[2]

Characteristics

The

luminosity of the Sun from its photosphere at an effective temperature of 5,973 K.[1]

Planetary system

Monitoring of this star for radial velocity variations began in November 2005 and the first companion was discovered on April 17, 2006.[8] This hot Jupiter is orbiting just 5,180,000 km from the host star and has an orbital period of 2.1 days, one of the shortest periods ever discovered by this technique.[4] The separation of this exoplant is sufficiently low that it may have sped up the star's rotation through tidal interaction.[9] HD 86081 shows no evidence of planetary transits in spite of a 17.6% transit probability.[8] There is a linear trend in the star's radial velocity measurements that may be an indicator of additional unseen companions.[4]

The HD 86081 planetary system[4]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b / Santamasa ≥1.48±0.23 MJ 0.0346±0.0027 2.1378431±0.0000031 0.0119±0.0047 — —

See also

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 119243619
    .
  5. ^
    S2CID 118520284
    .
  6. ^ "HD 86081". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-12-28.
  7. ^ a b "Approved names". NameExoworlds. Retrieved 2020-01-02.
  8. ^
    S2CID 12421834
    .
  9. S2CID 10975188
    .


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