Zeta Boötis

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ζ Boötis
Location of ζ Boötis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation
Boötes
Right ascension 14h 41m 08.95158s[1]
Declination +13° 43′ 41.8967″[1]
Apparent magnitude (V) 3.78[2](4.46 + 4.55)[3]
Characteristics
Spectral type A2III + A2III[4]
A1V[5]
U−B color index +0.05[2]
B−V color index +0.05[2]
Distance
180 ± 10 ly
(55 ± 4 pc)
Absolute magnitude (MV)+0.13[7]
Argument of periastron
(ω)
(secondary)		262.9±5.9°
Details
Luminosity81[7] L☉
HR 5477[11]
Database references
SIMBADdata

Zeta Boötis,

light years from the Sun based on parallax,[1] but is drifting closer with a radial velocity of −9 km/s.[6]

The duplicity of this star was discovered by English astronomer

AU at their closest approach. The next close approach will occur during August 2023.[8]

In 1976, T. W. Edwards found a

giant stars. Helmut A. Abt reported a class of A2V in 1981, which matches an A-type main-sequence star.[13] Abt and Nidia Morrell updated the classification to A1V in 1995.[5] Considering the extreme nature of their orbit, it is unlikely that any companion exoplanets could have stable orbits around either star.[14]

Gallery

References

  1. ^
    S2CID 18759600
  2. ^
    Bibcode:1978A&AS...34....1N
    .
  3. ^
    doi:10.1086/323920
    .
  4. doi:10.1086/111879
    .
  5. ^
    doi:10.1086/192182
    .
  6. ^
    S2CID 119231169
    .
  7. ^
    S2CID 119257644
    .
  8. ^
    S2CID 6030289
    .
  9. ^ "zet Boo". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-12-31.
  10. ^ "zet Boo A". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-12-31.
  11. ^ "zet Boo B". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-12-31.
  12. Bibcode:1956AcA.....6...82W
    .
  13. doi:10.1086/190719
    .
  14. S2CID 9272936
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=Zeta_Boötis&oldid=1192821162"