Chi Scorpii

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Template:Short description

χ Scorpii
Observation data
Epoch J2000      Equinox J2000
Constellation Scorpius
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 5.24[2]
Characteristics
Evolutionary stage horizontal branch(57%chance) or red giant branch(43%chance)[3]
Spectral type K3 III[4]
U−B Template:Engvar +1.54[5]
B−V Template:Engvar +1.39[2]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[6] km/s
Proper motion (μ) RA: −4.991 mas/yr[1]
Dec.: −9.931 mas/yr[1]
Parallax (π)7.2874±0.0993 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)−0.08[2]
Details[3]
MassScript error: No such module "val". Template:Solar mass
RadiusScript error: No such module "val". Template:Solar radius
LuminosityScript error: No such module "val". Template:Solar luminosity
Surface gravity (log g)Script error: No such module "val". cgs
TemperatureScript error: No such module "val". K
Metallicity [Fe/H]Script error: No such module "val". dex
Rotational velocity (v sin i)8[7] km/s
AgeScript error: No such module "val". Gyr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[8]
Database references
SIMBADdata

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Chi Scorpii, Latinized from χ Scorpii, is a single[9] star in the zodiac constellation of Scorpius. It has an orange hue and can be faintly seen with the naked eye with an apparent visual magnitude of 5.24.[2][5] Based upon parallax measurements, this star is around 448 light years from the Sun.[1] The star is drifting closer with a radial velocity of −23.6 km/s.[6]

This is an aging K-type giant star with a stellar classification of K3 III,[4] which means it has exhausted the supply of hydrogen at its core. There is a 57% chance that this evolved star is on the horizontal branch and a 43% chance it is still on the red-giant branch. If it is on the former, the star is estimated to have 1.09 times the mass of the Sun, nearly 27 times the solar radius and shines with 191 times the Sun's luminosity. It is around 8 billion years old.[3]

Planetary system

One superjovian planet orbiting Chi Scorpii was detected in 2020 on a mildly eccentric orbit utilizing the radial velocity method.[10]

Template:OrbitboxPlanet begin Template:OrbitboxPlanet

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See also

References

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  1. ↑ a b c d e Template:Cite Gaia DR3
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  3. ↑ a b c Script error: No such module "citation/CS1".
  4. ↑ a b Script error: No such module "citation/CS1".
  5. ↑ a b Script error: No such module "citation/CS1".
  6. ↑ a b Script error: No such module "citation/CS1".
  7. ↑ Script error: No such module "citation/CS1".
  8. ↑ Script error: No such module "citation/CS1".
  9. ↑ Script error: No such module "citation/CS1".
  10. ↑ Script error: No such module "Citation/CS1".

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External links

  • Script error: No such module "citation/CS1".

Template:Stars of Scorpius

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