52 Sagittarii

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52 Sagittarii
Location of 52 Sagittarii (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Sagittarius
Right ascension 19h 36m 42.43288s[1]
Declination −24° 53′ 01.0288″[1]
Apparent magnitude (V) 4.59[2] + 9.2
Characteristics
Evolutionary stage main sequence[3]
Spectral type B8/9V[4] + K2–4V
U−B color index −0.15[5]
B−V color index −0.06[5]
Distance
190 ± 3 ly
(58.1 ± 0.8 pc)
Absolute magnitude (MV)0.77[2]
Details
52 Sgr A
Myr
HR 7440, SAO 188337, CCDM J19367-2453AB, WDS J19367-2453AB, GSC 06893-02132[11]
Database references
SIMBADdata

52 Sagittarii is a

apparent visual magnitude of 4.59.[2] It is located approximately 190 light years away based on parallax,[1] but is drifting closer with a radial velocity of −19 km/s.[6]

The primary component is a

projected rotational velocity of 48 km/s.[3]

52 Sagittarii has one companion at an

″. This object is magnitude 9.2 with a spectral class in the K2V-K4V range, and is believed to be the source of X-ray emissions from the system.[14][15]

References

  1. ^
    S2CID 18759600. Vizier catalog entry
  2. ^
    S2CID 119257644. Vizier catalog entry
  3. ^
    S2CID 55586789. Vizier catalog entry
  4. ^
    Bibcode:1988mcts.book.....H
    .
  5. ^
    Bibcode:2014JAVSO..42..443M.Vizier catalog entry
  6. ^
    LCCN 54001336
    .
  7. ^
    S2CID 118629873. Vizier catalog entry
  8. ^
    Bibcode:1999A&A...352..555A. Vizier catalog entry
  9. S2CID 33401607. Vizier catalog entry
  10. S2CID 118345778. Vizier catalog entry
  11. ^ "h02 Sgr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-07-27.
  12. S2CID 14878976
    .
  13. doi:10.1086/116967
    . Garrison has note: "Balmer shell cores?"
  14. S2CID 15143368
    .
  15. doi:10.1086/323920. Vizier catalog entry
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