Chi3 Sagittarii

For other stars with this Bayer designation, see χ Sagittarii.
Chi3 Sagittarii
Diagram showing star positions and boundaries of the Sagittarius constellation and its surroundings
Location of χ3 Sagittari (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Sagittarius
Right ascension 19h 25m 29.65949s[1]
Declination −23° 57′ 44.8390″[1]
Apparent magnitude (V) +5.448[2]
Characteristics
Spectral type K3 III[3]
U−B color index +1.662[2]
B−V color index +1.443[2]
Variable type suspected[4]
Astrometry
Radial velocity (Rv)+39.6[5] km/s
Proper motion (μ) RA: −18.66[1] mas/yr
Dec.: −12.73[1] mas/yr
Parallax (π)6.53 ± 0.42 mas[1]
Distance500 ± 30 ly
(153 ± 10 pc)
Absolute magnitude (MV)−0.46[6]
Details
Radius37[7] R☉
Luminosity301[8] L☉
Surface gravity (log g)1.860[9] cgs
Temperature4,040[9] K
Metallicity [Fe/H]−0.10[9] dex
Other designations
Chi3 Sgr, 49 Sgr, NSV 11992, CPD−24° 6723, HD 182416, HIP 95503, HR 7363, SAO 188105[10]
Database references
SIMBADdata

Chi3 Sagittarii (χ3 Sagittarii) is a solitary,[11] orange-hued star in the zodiac constellation of Sagittarius. It is faintly visible to the naked eye with an apparent visual magnitude of +5.45.[2] Based upon an annual parallax shift of 6.53 mas as seen from Earth,[1] it is located roughly 500 light years from the Sun. It is receding from the Earth with a radial velocity of 39.6 km/s.[5]

This is an evolved, K-type giant star with a stellar classification of K3 III.[3] It is a suspected optical variable star with a magnitude range of 5.42 to 5.46.[4] At infrared wavelengths, it shows large amplitude variation with a period of 505 days.[12] The star has expanded to about 37[7] times the Sun's radius and is radiating 301[8] times the solar luminosity from its photosphere at an effective temperature of 4,040 K.[9]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Celis1975 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1978 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference gcvs was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference rgcrv was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference CADARS2001 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).
  9. ^ a b c d Cite error: The named reference Soubiran2010 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Price2010 was invoked but never defined (see the help page).