HD 178322

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HD 178322
Location of HD 178322 (circled)
Observation data
ICRS
)
Constellation Corona Australis
Right ascension 19h 09m 57.65200s[1]
Declination −41° 53′ 32.0836″[1]
Apparent magnitude (V) 5.86±0.01[2]
Characteristics
Spectral type B5 V + B6 V[3]
U−B color index −0.49[4]
B−V color index −0.08[4]
Variable type suspected[5]
Distance
1,550 ± 80 ly
(480 ± 30 pc)
Absolute magnitude (MV)−2.31[7] (combined)
Semi-amplitude
(K1)
(primary)		79.70 km/s
Semi-amplitude (K2)
(secondary)		78.90 km/s
Details
Myr
A
Rotational velocity (v sin i)
45±7[9] km/s
HR 7257, SAO 229531[14]
Database references
SIMBADdata

HD 178322, also known as HR 7257 or rarely 45 G. Coronae Australis, is a double-lined

Scorpius-Centaurus Association.[16]

The components of HD 178322 are both

million years old.[11]

References

  1. ^
    S2CID 244398875
    . Gaia DR3 record for this source at VizieR.
  2. ^
    S2CID 17128864
    .
  3. ^
    S2CID 118523421
    .
  4. ^
    S2CID 123957668
    .
  5. S2CID 125853869
    .
  6. ^
    S2CID 122899856
  7. ^
    S2CID 119257644
    .
  8. ^
    S2CID 125267464
    .
  9. ^
    S2CID 120183969
    .
  10. ^
    S2CID 118298938
    .
  11. ^
    S2CID 118629873
    .
  12. ^
    S2CID 123986012
    .
  13. Bibcode:1879RNAO....1.....G
    .
  14. ^ "HD 178322". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved May 30, 2023.
  15. S2CID 230958433
    .
  16. S2CID 121858509
    .
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