HD 158220 - Misplaced Pages

Star in the constellation Ara

HD 158220
Observation data Epoch J2000 Equinox J2000
A light curve for V862 Arae, plotted from TESS data. The 1.15 day period is marked in red.
Constellation	Ara
Right ascension	17 31 23.28387
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 (R_v)	-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. Its apparent magnitude is 5.9, makeing it faintly visible to the naked eye under good observing conditions. This is a pulsating variable star that changes brightness by an amplitude of 0.030 magnitude over a period of 1.15 days.

The Hipparcos data revealed that HD 158220 is a variable star. It was given its variable star designation, V862 Arae, in 1999.

References

"MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.
^ 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.
^ 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
^ 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
^ 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
Kazarovets, E. V.; Samus, N. N.; Durlevich, O. V.; Frolov, M. S.; Antipin, S. V.; Kireeva, N. N.; Pastukhova, E. N. (January 1999). "The 74th Special Name-list of Variable Stars". Information Bulletin on Variable Stars. 4659: 1. Bibcode:1999IBVS.4659....1K. Retrieved 25 November 2024.

External links

Constellation of Ara

Stars

Bayer	α (Choo/Tchou) β γ δ ε ε ζ (Tseen Yin) η θ ι κ λ μ (Cervantes) ν (V539) ν π ρ ρ σ
Variable	R S OY V626 V821 V828 V829 V854 V862 V872
HR	6177 6187 6207 6236 6251 6253 6297 6300 6312 6323 6408 6416 (41 G.) 6423 6438 6477 6478 6483 6487 6513 6759
HD	152079 153201 154672 154857 156411 (Inquill)
Other	2MASS J18082002−5104378 CXOU J164710.2−455216 Gliese 674 Gliese 676 IRAS 16594-4656 SAO 244567 SGR 1627−41 Westerlund 1-20 Westerlund 1 W26 Westerlund 1-75 Westerlund 1-237 Westerlund 1-243 XTE J1650−500

Exoplanets	Gliese 674 b HD 154672 b HD 154857 b c HD 156411 b μ Arae b c d e

Star
clusters

NGC	6193 6200 6204 6208 6250 6352 6362 6397
Other	ESO 280-SC06 IC 4651 Westerlund 1

Nebulae

NGC	6188 6326
Other	Stingray Nebula Water Lily Nebula

Galaxies

NGC	6215 6221 6300 6328