Astronomy:HD 199442

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Short description: Star in the constellation Aquarius
HD 199442
Observation data
Equinox J2000.0]] (ICRS)
Constellation Aquarius[1]
Right ascension  20h 57m 10.57748s[2]
Declination +00° 27′ 49.6076″[2]
Apparent magnitude (V) 6.065[3]
Characteristics
Evolutionary stage red giant branch[2]
Spectral type K2III[3]
U−B color index +1.29[4]
B−V color index +1.22[4]
Astrometry
Radial velocity (Rv)−26.47[3] km/s
Proper motion (μ) RA: +12.078[2] mas/yr
Dec.: −62.766[2] mas/yr
Parallax (π)10.0850 ± 0.0398[2] mas
Distance323 ± 1 ly
(99.2 ± 0.4 pc)
Absolute magnitude (MV)+1.2[1]
Details
Mass1.4[5] M☉
Radius11.5[2] R☉
Luminosity48[2] L☉
Surface gravity (log g)2.44[5] cgs
Temperature4,625[5] K
Metallicity [Fe/H]0.01[5] dex
Rotational velocity (v sin i)2.7[6] km/s
Age4.5[2] Gyr
Other designations
ADS 14457 A, BD−00°4132, HIP 103414, HR 8017, SAO 126396
Database references
SIMBADdata

HD 199442 is a giant star situated in the Aquarius constellation. It is located about 323 light years from the Solar System.

References

  1. ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  3. ↑ 3.0 3.1 3.2 Luck, R. Earle; Heiter, Ulrike (June 2007). "Giants in the Local Region". The Astronomical Journal 133 (6): 2464–2486. doi:10.1086/513194. Bibcode: 2007AJ....133.2464L. 
  4. ↑ 4.0 4.1 Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. SIMBAD. Bibcode: 1986EgUBV........0M. 
  5. ↑ 5.0 5.1 5.2 5.3 Khalatyan, A.; Anders, F.; Chiappini, C.; Queiroz, A. B. A.; Nepal, S.; Dal Ponte, M.; Jordi, C.; Guiglion, G. et al. (2024). "Transferring spectroscopic stellar labels to 217 million Gaia DR3 XP stars with SHBoost". Astronomy and Astrophysics 691: A98. doi:10.1051/0004-6361/202451427. Bibcode: 2024A&A...691A..98K. 
  6. ↑ Massarotti, Alessandro et al. (January 2008). "Rotational and radial velocities for a sample of 761 HIPPARCOS giants and the role of binarity". The Astronomical Journal 135 (1): 209–231. doi:10.1088/0004-6256/135/1/209. Bibcode: 2008AJ....135..209M. 




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