HD 190422

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HD 190422
Location of HD 190422(circled)
Observation data
ICRS
)
Constellation Telescopium
Right ascension 20h 07m 35.09061s[1]
Declination −55° 00′ 57.6492″[1]
Apparent magnitude (V) 6.25±0.01[2]
Characteristics
Spectral type F9 V CH−0.4[3]
B−V color index +0.53[4]
Distance
78.58 ± 0.05 ly
(24.09 ± 0.02 pc)
Absolute magnitude (MV)+4.41[6]
Details
Myr
HR 7674, SAO 246444[15]
Database references
SIMBADdata

HD 190422, also known as HR 7674 or rarely 77 G. Telescopii, is a solitary star located in the southern constellation Telescopium. It has an apparent magnitude of +6.25,[2] placing it near the limit for naked eye, even under ideal conditions. At its current distance, HD 190422's brightness is diminished by 0.11 magnitudes due to extinction from interstellar dust[16] and it has an absolute magnitude of +4.41.[6]

The star is located relatively close at a distance of 79

million years ago, HD 190422 was located 7.806 parsecs (25.46 ly) away from the Sun.[17]

HD 190422 has a

million years old,[13][3] less than a tenth the age of the Sun
.

References

  1. ^
    S2CID 244398875
    . Gaia DR3 record for this source at VizieR.
  2. ^
    S2CID 17128864
    .
  3. ^
    S2CID 250741593
    .
  4. S2CID 118307502
    .
  5. ^
    S2CID 119231169
    .
  6. ^
    S2CID 119257644
    .
  7. ^
    S2CID 119246448
    .
  8. ^
    S2CID 6077801
    .
  9. ^
    S2CID 56118016
    .
  10. ^
    S2CID 119034918
    .
  11. S2CID 119515775
    .
  12. ^
    S2CID 53666672
    .
  13. ^
    S2CID 120627407
    .
  14. Bibcode:1879RNAO....1.....G
    .
  15. ^ "HD 190422". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved March 31, 2023.
  16. S2CID 118879856
    .
  17. S2CID 59039482
    .
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