HD 124448

{{Starbox begin

| name=HD 124448

}}

{{Starbox image

| image = 250px

| caption = A light curve for V821 Centauri, plotted from TESS data. Adapted from Jeffery et al. (2020)

}}

{{Starbox observe

| epoch=J2000

| ra={{RA|14|14|58.6293}}

| dec={{DEC|-46|17|19.294}}

| appmag_v=9.94 - 10.03

| constell=Centaurus

}}

{{Starbox character

| type=B(p)

| variable=PV Tel?

}}

{{Starbox astrometry

| radial_v=

| prop_mo_ra={{val|-6.544|0.038}}

| prop_mo_dec={{val|-0.049|0.032}}

| pm_footnote

| parallax=0.6240

| p_error=0.0312

| parallax_footnote=

| dist_ly=

| dist_pc=

| absmag_v=

}}

{{Starbox detail

| mass=6.7

| temperature=15,481

| radius=5.2

| luminosity=1,282

| gravity=3.86

| metal_fe=−0.55

| age_myr=

}}

{{Starbox catalog

| names= V821 Cen, HD 124448, HIP 69619, 2MASS J14145863-4617192

}}

{{Starbox reference

|Simbad = V821+Cen

}}

HD 124448, also called Popper's Star and V821 Centauri, is an extreme helium star in the Centaurus constellation. Discovered by astronomer Daniel Popper, this star has a spectral classification of B2-B3 and a radius of {{solar radius|13|link=y}}.

Peter M. Corben et al. announced that the star is a variable star, in 1972. It was given its variable star designation, V821 Centauri, in 1981.

References

{{Reflist|refs=

{{cite journal |bibcode=2024A&A...691A..98K |title=Transferring spectroscopic stellar labels to 217 million Gaia DR3 XP stars with SHBoost |last1=Khalatyan |first1=A. |last2=Anders |first2=F. |last3=Chiappini |first3=C. |last4=Queiroz |first4=A. B. A. |last5=Nepal |first5=S. |last6=Dal Ponte |first6=M. |last7=Jordi |first7=C. |last8=Guiglion |first8=G. |last9=Valentini |first9=M. |last10=Torralba Elipe |first10=G. |last11=Steinmetz |first11=M. |last12=Pantaleoni-González |first12=M. |last13=Malhotra |first13=S. |last14=Jiménez-Arranz |first14=Ó. |last15=Enke |first15=H. |last16=Casamiquela |first16=L. |last17=Ardèvol |first17=J. |journal=Astronomy and Astrophysics |date=2024 |volume=691 |pages=A98 |doi=10.1051/0004-6361/202451427 |arxiv=2407.06963 }}

{{cite journal |bibcode=1978mcts.book.....H |title=Michigan catalogue of two-dimensional spectral types for the HD stars |last1=Houk |first1=Nancy |journal=Ann Arbor: Dept. Of Astronomy |date=1978 }}

{{cite journal |last1=Kholopov |first1=P. N. |last2=Samus |first2=N. N. |last3=Kukarkina |first3=N. P. |last4=Medvedeva |first4=G. I. |last5=Perova |first5=N. B. |title=65th Name-List of Variable Stars |journal=Information Bulletin on Variable Stars |date=February 1981 |volume=1921 |pages=1–21 |bibcode=1981IBVS.1921....1K |url=https://ibvs.konkoly.hu/pub/ibvs/1901/1921.pdf |access-date=16 January 2025}}

{{cite journal |last1=Corben |first1=P. M. |last2=Carter |first2=B. S. |last3=Banfield |first3=R. M. |last4=Harvey |first4=G. M. |title=UBV Photometry of 500 Southern Stars [erratum: 1973MNSSA..32...48C] |journal=Monthly Notes of the Astron. Soc. Southern Africa |date=1972 |volume=31 |pages=7–22 |bibcode=1972MNSSA..31....7C |url=https://ui.adsabs.harvard.edu/abs/1972MNSSA..31....7C/abstract |access-date=16 January 2025}}

{{cite web |title=V821 Cen |url=http://www.sai.msu.su/gcvs/cgi-bin/search2.cgi?search=V821+Cen |website=General Catalog of Variable Stars |publisher=Sternberg Astronomical Institute |access-date=24 May 2023}}

{{cite journal |bibcode=2020MNRAS.495L.135J |title=TESS photometry of extreme helium stars PV Tel and V821 Cen |last1=Jeffery |first1=C. Simon |last2=Barentsen |first2=Geert |last3=Handler |first3=Gerald |journal=Monthly Notices of the Royal Astronomical Society |year=2020 |volume=495 |issue=1 |pages=L135–L138 |doi=10.1093/mnrasl/slaa075 |doi-access=free |arxiv=2006.00946 }}

{{cite journal |bibcode=1974A&A....37...87S |title=Fine analysis of Popper's star HD 124448 |last1=Schoenberner |first1=D. |last2=Wolf |first2=R. E. A. |journal=Astronomy and Astrophysics |year=1974 |volume=37 |page=87 }}

{{cite journal |bibcode=1946PASP...58..370P |title=The Spectrum of HD 124448. Second Note |last1=Popper |first1=Daniel M. |journal=Publications of the Astronomical Society of the Pacific |year=1946 |volume=58 |issue=345 |page=370 |doi=10.1086/125875 |s2cid=121599294 }}

}}

Category:Centaurus

Category:B-type stars

Category:PV Telescopii variables

Category:Extreme helium star

124448

Centauri, V821

069619