Chi 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) | Template: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] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −0.08[2] |
| Details[3] | |
| Mass | Template:Val Template:Solar mass |
| Radius | Template:Val Template:Solar radius |
| Luminosity | Template:Val Template:Solar luminosity |
| Surface gravity (log g) | Template:Val cgs |
| Temperature | Template:Val K |
| Metallicity [Fe/H] | Template:Val dex |
| Rotational velocity (v sin i) | 8[7] km/s |
| Age | Template:Val Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[8] | |
| Database references | |
| SIMBAD | data |
Script error: No such module "Check for unknown parameters".
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 Template:Orbitbox end
See also
References
External links
- Script error: No such module "citation/CS1".
- ↑ a b c d e Cite error: Invalid
<ref>tag; no text was provided for refs namedGaiaDR3 - ↑ a b c d Cite error: Invalid
<ref>tag; no text was provided for refs namedAnderson2012 - ↑ a b c Cite error: Invalid
<ref>tag; no text was provided for refs namedReffert2015 - ↑ a b Cite error: Invalid
<ref>tag; no text was provided for refs namedHouk1999 - ↑ a b Cite error: Invalid
<ref>tag; no text was provided for refs namedMermilliod1986 - ↑ a b Cite error: Invalid
<ref>tag; no text was provided for refs namedAPJSS141 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedBernacca1970 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedSIMBAD - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedEggleton2008 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedPinto2020