HD 93833

Summary

HD 93833
Observation data
Epoch J2000      Equinox J2000
Constellation Sextans
Right ascension 10h 49m 43.48894s[1]
Declination −09° 51′ 09.6989″[1]
Apparent magnitude (V) 5.842[2]
Characteristics
Spectral type K0 III[3]
U−B color index +0.91[4]
B−V color index +1.07[4]
Astrometry
Radial velocity (Rv)40.3 ± 2[5] km/s
Proper motion (μ) RA: 10.06[1] mas/yr
Dec.: −26.87[1] mas/yr
Parallax (π)9.57 ± 0.36[1] mas
Distance340 ± 10 ly
(104 ± 4 pc)
Details[6]
Radius10.527 R
Luminosity49.414 ± 3.212 L
Temperature4720 ± 125 K
Other designations
BD−09° 3147, HD 93833, HIP 52948, HR 4233, SAO 137815
Database references
SIMBADdata

HD 93833 is a star in the constellation of Sextans. Its apparent magnitude is 5.842,[2] but interstellar dust makes it appear 0.202 magnitudes dimmer than it should be.[6] It is located some 340 light-years (104 parsecs) away, based on parallax.[1]

HD 93833 is a K-type giant star. It has evolved from the main sequence to a radius of 10.5 times that of the Sun. It emits 49.4 times as much energy as the Sun at a surface temperature of 4,720 K.[6]

References

  1. ^ a b c d e f van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.
  2. ^ a b Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
  3. ^ Houk, N.; Cowley, A. P. (1975). "University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90°.0 to -53°.0". Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars. 1. Bibcode:1975mcts.book.....H.
  4. ^ a b Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.
  5. ^ Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Washington. Bibcode:1953GCRV..C......0W.
  6. ^ a b c McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017). "Fundamental parameters and infrared excesses of Tycho-Gaia stars". Monthly Notices of the Royal Astronomical Society. 471: 770–791. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433.