HD 119124

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HD 119124
Observation data
Epoch J2000      Equinox J2000
Constellation Ursa Major
A
Right ascension 13h 40m 23.2324s[1]
Declination +50° 31′ 09.8962″[1]
Apparent magnitude (V) 6.32[2]
B
Right ascension 13h 40m 24.5190s[3]
Declination +50° 30′ 57.5709″[3]
Apparent magnitude (V) 10.51[4]
Characteristics
Spectral type F8 V[5] + K7[6]
U−B color index −0.01[2]
B−V color index +0.52[2]
Distance
82.88 ± 0.07 ly
(25.41 ± 0.02 pc)
Details
A
Gyr
B
Mass0.63[9] M☉
Temperature4,130[13] K
TYC 3469-1423-1, 2MASS J13402450+5030576[16]
Database references
SIMBADdata

HD 119124 is a wide

light years. The pair are candidate members of the Castor Moving Group,[18] which implies a relatively youthful age of around 200 million years.[12] HD 119124 is moving closer to the Sun with a radial velocity of −12 km/s.[7]

This system was first identified as a

gravitationally bound with an estimated orbital period of around 7,000 years and a linear projected separation of 444.6 AU.[17]

The primary, component A, is a

Sun's luminosity from its photosphere at an effective temperature of 6,149 K.[11]

HD 119124 A displays a strong

AU from the host star. The estimated grain lifetimes are 84,000 years – much shorter than the star's lifespan. This suggests the grains are being replenished via collisions between some number of larger bodies totaling around 1−6 times the mass of the Moon.[10]

This system is a likely (80.4% chance) source of the strong X-ray emission coming from these coordinates.[20]

References

  1. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  2. ^
    Bibcode:1991A&AS...89..415O
    .
  3. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  4. ^
    doi:10.1086/323920
  5. ^
    S2CID 119476992
    .
  6. doi:10.1086/113994
    .
  7. ^
    S2CID 119231169
    .
  8. S2CID 118577511
    .
  9. ^
    doi:10.1093/mnras/stv2825
    .
  10. ^
    doi:10.1086/497124
    .
  11. ^
    S2CID 56420519
    , L8.
  12. ^
    S2CID 118446756
    , 5.
  13. S2CID 16238033
    .
  14. ^ "WDS J13404+5031AB". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-10-14.
  15. ^ "HD 119124". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-10-14.
  16. ^ "HD 119124B". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-10-14.
  17. ^
    S2CID 56066740
    , 87.
  18. S2CID 118875432
    .
  19. Bibcode:2000IBVS.5003....1A
    .
  20. S2CID 119267456
    .
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