HD 161988

HD 161988

Observation data Epoch J2000      Equinox J2000
Constellation	Apus
Right ascension	17^h 57^m 41.687^s[1]
Declination	−76° 10′ 40.62″[1]
Apparent magnitude (V)	6.07[2]
Characteristics
Spectral type	K2III[3]
U−B color index	+1.28[2]
B−V color index	+1.20[2]
Astrometry
Radial velocity (Rv)	+36.8[4] km/s
Proper motion (μ)	RA: 1.97±0.28[1] mas/yr Dec.: −1.73±0.27[1] mas/yr
Parallax (π)	5.38 ± 0.31[1] mas
Distance	610 ± 30 ly (190 ± 10 pc)
Absolute magnitude (MV)	7.296
Details
Luminosity	185[5] L☉
Temperature	4,498[5] K
Other designations
CD-76° 919, HD 161988, HIP 87926, HR 6635, SAO 257542.
Database references
SIMBAD	data

HD 161988 is star in the southern constellation of Apus.

References

1. van Leeuwen, F. (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.Vizier catalog entry
2. Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory 4 (99), Bibcode:1966CoLPL...4...99J
3. Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H
4. Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759–771. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
5. McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x

External links

• Image HD 161988