Kappa2 Sagittarii

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For other stars with this Bayer designation, see κ Sagittarii.
Kappa2 Sagittarii
Location of κ2 Sagittarii (circled)
Observation data
ICRS
)
Constellation Sagittarius
Right ascension 20h 23m 53.17666s[1]
Declination −42° 25′ 22.3376″[1]
Apparent magnitude (V) +5.64[2] (6.04 + 7.12)[3]
Characteristics
Spectral type A5 V[4] (A1 + A6)[5]
U−B color index +0.099[2]
B−V color index +0.192[2]
Distance
310 ± 10 ly
(96 ± 5 pc)
Absolute magnitude (MV)1.03/2.35[5]
Argument of periastron
(ω)
(secondary)		177.3°
Details
κ2 Sgr A
Myr
HR 7787, SAO 230184, WDS J20239-4225[10]
Database references
SIMBADdata

Kappa2 Sagittarii (κ2 Sagittarii) is a

light years from the Sun. They are receding with a radial velocity of +2.6 km/s.[6]

This is a

Sun's luminosity from its photosphere at an effective temperature of about 7,990 K.[8] The companion, component B, is visual magnitude 7.12.[3]

There are two

angular separation of 18.6 arc seconds along a position angle of 266°, as of 2000; component D is magnitude 14.0 with a separation of 29.8 arc seconds along a position angle of 219°, also as of 2000.[11]

References

  1. ^
    S2CID 18759600
    .
  2. ^
    Bibcode:1983SAAOC...7...36C
    .
  3. ^
    S2CID 14878976
    .
  4. ^
    Bibcode:1978mcts.book.....H
    .
  5. ^
    doi:10.2298/SAJ1080071C
    .
  6. ^
    Bibcode:1967IAUS...30...57E
  7. ^
    S2CID 122326479
    .
  8. ^
    S2CID 33401607
    .
  9. ^
    S2CID 118665352
    .
  10. ^ "kappa02 Sgr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-07-06.{{cite web}}: CS1 maint: postscript (link)
  11. doi:10.1086/323920
    , retrieved 2015-07-22.
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