HD 124448

HD 124448
	; A light curve for V821 Centauri, plotted from TESS data. Adapted from Jeffery et al. (2020)
Observation data; Epoch J2000 Equinox J2000
Constellation	Centaurus
Right ascension	14h 14m 58.6293s
Declination	−46° 17′ 19.294″
Apparent magnitude (V)	9.94 - 10.03
Astrometry
Proper motion (μ)	RA: −6.544±0.038 mas/yr ; Dec.: −0.049±0.032 mas/yr
Parallax (π)	0.6240 ± 0.0312 mas
Distance	5,200 ± 300 ly ; (1,600 ± 80 pc)
Other designations
	V821 Cen, HD 124448, HIP 69619, 2MASS J14145863-4617192
Database references
SIMBAD	data

HD 124448, also called Popper's Star and V821 Centauri, is an extreme helium star in the Centaurus constellation.^[1] Discovered by astronomer Daniel Popper, this star has a spectral classification of B2-B3 and a radius of 13 R_☉.^[5]^[6]

References

^ ^a ^b Jeffery, C. Simon; Barentsen, Geert; Handler, Gerald (2020). "TESS photometry of extreme helium stars PV Tel and V821 Cen". Monthly Notices of the Royal Astronomical Society. 495 (1): L135–L138. arXiv:2006.00946. Bibcode:2020MNRAS.495L.135J. doi:10.1093/mnrasl/slaa075.
^ ^a ^b ^c Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
^ "V821 Cen". General Catalog of Variable Stars. Sternberg Astronomical Institute. Retrieved 24 May 2023.
^ "HD 124448". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved May 23, 2023.
^ Schoenberner, D.; Wolf, R. E. A. (1974). "Fine analysis of Popper's star HD 124448". Astronomy and Astrophysics. 37: 87. Bibcode:1974A&A....37...87S.
^ Popper, Daniel M. (1946). "The Spectrum of HD 124448. Second Note". Publications of the Astronomical Society of the Pacific. 58 (345): 370. Bibcode:1946PASP...58..370P. doi:10.1086/125875. S2CID 121599294.

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Observation data Epoch J2000 Equinox J2000
A light curve for V821 Centauri, plotted from TESS data. Adapted from Jeffery et al. (2020)^[1]
Constellation	Centaurus
Right ascension	14^h 14^m 58.6293^s^[2]
Declination	−46° 17′ 19.294″^[2]
Apparent magnitude (V)	9.94 - 10.03^[3]
Astrometry

Proper motion (μ)	RA: −6.544±0.038 mas/yr Dec.: −0.049±0.032 mas/yr
Parallax (π)	0.6240 ± 0.0312 mas^[2]
Distance	5,200 ± 300 ly (1,600 ± 80 pc)

Other designations
V821 Cen, HD 124448, HIP 69619, 2MASS J14145863-4617192^[4]
Database references
SIMBAD	data