Tau8 Serpentis

{{Short description|Star in the constellation Serpens}}

{{DISPLAYTITLE:Tau⁸ Serpentis}}

{{For|other stars with this Bayer designation|Tau Serpentis}}

{{Starbox begin}}

{{Starbox observe

| epoch = J2000.0

| equinox = J2000.0 (ICRS)

| constell = Serpens

| ra = {{RA|15|44|42.1323}}

| dec = {{DEC|+17|15|51.199}}

| appmag_v=6.1{{cite journal |bibcode=2000A&A...355L..27H |title=The Tycho-2 catalogue of the 2.5 million brightest stars |last1=Høg |first1=E. |last2=Fabricius |first2=C. |last3=Makarov |first3=V. V. |last4=Urban |first4=S. |last5=Corbin |first5=T. |last6=Wycoff |first6=G. |last7=Bastian |first7=U. |last8=Schwekendiek |first8=P. |last9=Wicenec |first9=A. |journal=Astronomy and Astrophysics |date=2000 |volume=355 }}

}}

{{Starbox character

| type = main sequence{{cite journal |bibcode=2012A&A...537A.120Z |title=Rotational velocities of A-type stars. IV. Evolution of rotational velocities |last1=Zorec |first1=J. |last2=Royer |first2=F. |journal=Astronomy and Astrophysics |date=2012 |volume=537 |pages=A120 |doi=10.1051/0004-6361/201117691 |arxiv=1201.2052 }}

| class = A0V

| u-b = −0.03[http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=V/50/catalog&recno=5858 HR 5858], database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID [http://vizier.u-strasbg.fr/viz-bin/Cat?V/50 V/50]. Accessed on line September 19, 2008.

| b-v = 0.00

}}

{{Starbox astrometry

| radial_v = {{val|−7.47|0.53}}

| prop_mo_ra = −28.655

| prop_mo_dec = +4.476

| parallax = 8.9643

| p_error = 0.0409

| parallax_footnote = {{cite Gaia DR3|1197415239789852544}}

| absmag_v= 0.88{{citation

| title=XHIP: An extended hipparcos compilation

| last1=Anderson | first1=E. | last2=Francis | first2=Ch.

| journal=Astronomy Letters

| volume=38 | issue=5 | pages=331 | year=2012

| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015

| arxiv=1108.4971 | s2cid=119257644 | postscript=. }}

}}

{{Starbox detail

| mass = 2.5{{cite journal |bibcode=2019AJ....158..138S |title=The Revised TESS Input Catalog and Candidate Target List |last1=Stassun |first1=Keivan G. |last2=Oelkers |first2=Ryan J. |last3=Paegert |first3=Martin |last4=Torres |first4=Guillermo |last5=Pepper |first5=Joshua |last6=De Lee |first6=Nathan |last7=Collins |first7=Kevin |last8=Latham |first8=David W. |last9=Muirhead |first9=Philip S. |last10=Chittidi |first10=Jay |last11=Rojas-Ayala |first11=Bárbara |last12=Fleming |first12=Scott W. |last13=Rose |first13=Mark E. |last14=Tenenbaum |first14=Peter |last15=Ting |first15=Eric B. |last16=Kane |first16=Stephen R. |last17=Barclay |first17=Thomas |last18=Bean |first18=Jacob L. |last19=Brassuer |first19=C. E. |last20=Charbonneau |first20=David |last21=Ge |first21=Jian |last22=Lissauer |first22=Jack J. |last23=Mann |first23=Andrew W. |last24=McLean |first24=Brian |last25=Mullally |first25=Susan |last26=Narita |first26=Norio |last27=Plavchan |first27=Peter |last28=Ricker |first28=George R. |last29=Sasselov |first29=Dimitar |last30=Seager |first30=S. |journal=The Astronomical Journal |date=2019 |volume=158 |issue=4 |page=138 |doi=10.3847/1538-3881/ab3467 |doi-access=free |arxiv=1905.10694 |display-authors=1 }}

| luminosity = 44

| temperature = 9,727

| rotational_velocity = 117

| radius = 2.3

| gravity = 4.09

}}

{{Starbox catalog

| names={{odlist | B=τ⁸ Ser, Tau⁸ Ser | F=26 Serpentis | BD=+17°2906 | HD=140729 | HIP=77111 | HR=5858 | SAO=101712 | GC=21164 | PPM=131656 }}{{SIMBAD link|tau8+ser|* 26 Ser -- Star}}, database entry, SIMBAD. Accessed on line September 19, 2008.

}}

{{Starbox reference

| Simbad=tau8+ser}}

{{Starbox end}}

Tau⁸ Serpentis, Latinized from τ⁸ Serpentis, is an A-type main sequence star in the constellation of Serpens, approximately 364 light-years from the Earth. It has an apparent visual magnitude of approximately 6.144. Although it was observed to be binary by speckle interferometry in 1985, subsequent observations show no sign of binarity, and the detection appears to have been spurious.{{cite journal |bibcode=1993AJ....106.1639M |title=ICCD Speckle Observations of Binary Stars. X. A Further Survey for Duplicity Among the Bright Stars |last1=McAlister |first1=Harold A. |last2=Mason |first2=Brian D. |last3=Hartkopf |first3=William I. |last4=Shara |first4=Michael M. |journal=The Astronomical Journal |date=1993 |volume=106 |page=1639 |doi=10.1086/116753 }}