T Centauri

{{Short description|Variable star in the constellation Centaurus}}

{{Starbox observe

| epoch = J2000.0

| constell = Centaurus

| ra = {{RA|13|41|45.56353}}

| dec = {{DEC|-33|35|50.5600}}

| appmag_v = 5.56{{snd}}8.44

}}

{{Starbox character

| type = AGB or post-AGB

| class = K0:e-M4II:e

| variable = semiregular

}}

{{Starbox astrometry

| radial_v = {{val|+32.6|2.5}}

| prop_mo_ra = −27.747

| prop_mo_dec = +3.365

| pm_footnote =

| parallax = 2.4007

| p_error = 0.0687

| parallax_footnote =

}}

{{Starbox catalog

| names={{odlist|V=T Cen|CD=-32°9549|HD=119090|HIP=66825|HR=5147|SAO=204739}}

}}

File:TCenLightCurve.png light curve for T Centauri, plotted from ASAS data]]

T Centauri is a variable star located in the far southern constellation Centaurus. It varies between magnitudes 5.56 and 8.44 over 181.4 days, making it intermittently visible to the naked eye. Pulsating between spectral classes K0:e and M4II:e, it has been classed as a semiregular variable, though Sebastian Otero of the American Association of Variable Star Observers has noted its curve more aligned with RV Tauri variable stars and has classified it as one.

The variability of the star was discovered in 1894 by Ernest Elliott Markwick, and independently by Williamina Fleming in 1895.

References

{{reflist|refs=

{{cite journal |bibcode=2017ARep...61...80S |title=General catalogue of variable stars: Version GCVS 5.1 |last1=Samus' |first1=N. N. |last2=Kazarovets |first2=E. V. |last3=Durlevich |first3=O. V. |last4=Kireeva |first4=N. N. |last5=Pastukhova |first5=E. N. |journal=Astronomy Reports |date=2017 |volume=61 |issue=1 |page=80 |doi=10.1134/S1063772917010085 }}

{{cite web|url=http://www.aavso.org/vsx/index.php?view=detail.top&oid=7300 |title=T Centauri |author =Watson, Christopher |date=27 December 2012 |work=AAVSO Website|publisher=American Association of Variable Star Observers|access-date=22 July 2014}}

{{cite journal |last1=Markwick |first1=E. E. |title=Note on the variable star T Centauri, Cord. GC. 18609 |journal=Astronomische Nachrichten |date=July 1895 |volume=138 |issue=13 |page=213 |doi=10.1002/asna.18951381304 |bibcode=1895AN....138..213M }}

{{cite web |title=T Cen |url=https://www.aavso.org/vsx/index.php?view=detail.top&oid=7300 |website=The International Variable Star Index |publisher=AAVSO |access-date=19 December 2024}}

{{cite web |title=ASAS All Star Catalogue |url=http://www.astrouw.edu.pl/asas/?page=aasc |publisher=The All Sky Automated Survey |access-date=8 December 2021}}

}}

Category:Centaurus

Category:Semiregular variable stars

Centauri, T

Category:Durchmusterung objects

119090

066825

Category:K-type giants

5147

Category:M-type bright giants

Category:Asymptotic-giant-branch stars

Category:RV Tauri variables