Kappa Pyxidis

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Kappa Pyxidis
Diagram showing star positions and boundaries of the Pyxis constellation and its surroundings
Cercle rouge 100%.svg

Location of κ Pyxidis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Pyxis
Right ascension 09h 08m 02.88045s[1]
Declination –25° 51′ 30.7303″[1]
Apparent magnitude (V) 4.62
Spectral type K4/K5III
Radial velocity (Rv) -44.7 ± 2 km/s
Proper motion (μ) RA: 35.65 ± 0.41[1] mas/yr
Dec.: 0.30 ± 0.27[1] mas/yr
Parallax (π) 5.82 ± 0.55[1] mas
Distance 560 ± 50 ly
(170 ± 20 pc)
Luminosity 965[2] L
Temperature 4031 K[2] K
Other designations
κ Pyxidis, CCDM J09080-2552AB, CPD−25° 4067, GC 12614, HD 78541, HIP 44824, HR 3628, IDS 09037-2527 AB, PPM 255695, SAO 177002, WDS J09080-2552AB
Database references

Kappa Pyxidis (Kappa Pyx, κ Pyxidis, κ Pyx) is multiple star system in constellation of Pyxis, with an apparent magnitude of +4.62. The primary component is an orange K-type giant. Approximately 500 light years from Earth, it shines with a luminosity approximately 965 times that of the Sun and has a surface temperature of 4031 K.[2] A magnitude 10 star is 2.1 arcseconds distant from it.[3]

Kappa Pyxidis is moving through the Galaxy at a speed of 53.7 km/s relative to the Sun. It will come closest to the Sun 2.6 million years from now when it will brighten to magnitude 3.34 from a distance of 308 light years.[4][better source needed]


  1. ^ a b c d e van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752Freely accessible, doi:10.1051/0004-6361:20078357 
  2. ^ a b c McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–57. Bibcode:2012MNRAS.427..343M. arXiv:1208.2037Freely accessible. doi:10.1111/j.1365-2966.2012.21873.x. 
  3. ^ Privett, Grant; Jones, Kevin (2013). The Constellation Observing Atlas. New York, New York: Springer Science & Business Media. p. 168. ISBN 9781461476481. 
  4. ^ Kappa Pyxidis (HIP 44824)