HD 158220

HD 158220
	; A light curve for V862 Arae, plotted from TESS data
Observation data; Epoch J2000 Equinox J2000
Constellation	Ara
Right ascension	17h 31m 23.28387s
Declination	−56° 55′ 15.4672″
Apparent magnitude (V)	5.95
Characteristics
Spectral type	B7II-III
B−V color index	−0.08
Variable type	Be star
Astrometry
Radial velocity (Rv)	-3 km/s
Proper motion (μ)	RA: −0.29 mas/yr ; Dec.: −3.72 mas/yr
Parallax (π)	1.78 ± 0.34 mas
Distance	approx. 1,800 ly ; (approx. 600 pc)
Details
Luminosity	1,176 L☉
Temperature	9,657 K
Other designations
	V862 Arae, CD-56° 6893, HD 158220, HIP 85751, HR 6505, SAO 244808.
Database references
SIMBAD	data

HD 158220 is a giant Be star in the southern constellation of Ara. This is a pulsating variable star that changes brightness by an amplitude of 0.030 magnitude over a period of 1.15 days.^[5]

References

^ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.
^ ^a ^b ^c ^d ^e 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. S2CID 18759600.
^ ^a ^b Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99): 99, Bibcode:1966CoLPL...4...99J
^ Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H
^ ^a ^b Percy, John R.; et al. (February 2004), "Short-Period Variable Be Stars Discovered or Confirmed through Self-Correlation Analysis of Hipparcos Epoch Photometry", The Publications of the Astronomical Society of the Pacific, 116 (816): 178–183, Bibcode:2004PASP..116..178P, doi:10.1086/382246, S2CID 120898311
^ Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Carnegie Institute of Washington, D.C., Bibcode:1953GCRV..C......0W
^ ^a ^b 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, S2CID 118665352

External links

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[MAST-1] "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.

[van_Leeuwen2007-2] 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. S2CID 18759600.

[clpl4_99-3] Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99): 99, Bibcode:1966CoLPL...4...99J

[houk1979-4] Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H

[pasp116_816_178-5] Percy, John R.; et al. (February 2004), "Short-Period Variable Be Stars Discovered or Confirmed through Self-Correlation Analysis of Hipparcos Epoch Photometry", The Publications of the Astronomical Society of the Pacific, 116 (816): 178–183, Bibcode:2004PASP..116..178P, doi:10.1086/382246, S2CID 120898311

[gcrv1953-6] Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Carnegie Institute of Washington, D.C., Bibcode:1953GCRV..C......0W

[Mcdonald2012-7] 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, S2CID 118665352

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Observation data Epoch J2000 Equinox J2000
A light curve for V862 Arae, plotted from TESS data^[1]
Constellation	Ara
Right ascension	17^h 31^m 23.28387^s^[2]
Declination	−56° 55′ 15.4672″^[2]
Apparent magnitude (V)	5.95^[3]
Characteristics
Spectral type	B7II-III^[4]
B−V color index	−0.08^[3]
Variable type	Be star^[5]
Astrometry

Radial velocity (R_v)	-3^[6] km/s
Proper motion (μ)	RA: −0.29^[2] mas/yr Dec.: −3.72^[2] mas/yr
Parallax (π)	1.78 ± 0.34 mas^[2]
Distance	approx. 1,800 ly (approx. 600 pc)

Details

Luminosity	1,176^[7] `L`_☉
Temperature	9,657^[7] K

Other designations
V862 Arae, CD-56° 6893, HD 158220, HIP 85751, HR 6505, SAO 244808.
Database references
SIMBAD	data