SS Cephei

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

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{{Starbox image

|image=

|caption=SS Cephei, as seen during the Sloan Digital Sky Survey

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{{Starbox observe

|epoch=J2000

|constell=Cepheus{{Cite web |title=obj-Cep |url=https://britastro.org/vss/obj-cep.html |access-date=2024-09-27 |website=britastro.org}}

|ra={{RA|03|49|30.0153}}{{cite Gaia DR3|556128072184905216}}

|dec={{DEC|+80|19|20.902}}

|appmag_v=6.9 - 7.9

}}

{{Starbox character

|type=AGB{{cite journal |bibcode=2002A&A...391.1053O |title=Mass loss rates of a sample of irregular and semiregular M-type AGB-variables |last1=Olofsson |first1=H. |last2=González Delgado |first2=D. |last3=Kerschbaum |first3=F. |last4=Schöier |first4=F. L. |journal=Astronomy and Astrophysics |date=2002 |volume=391 |issue=3 |page=1053 |doi=10.1051/0004-6361:20020841 |arxiv=astro-ph/0206172 }}

|class=M5III{{cite journal |bibcode=2012AstL...38..331A |title=XHIP: An extended hipparcos compilation |last1=Anderson |first1=E. |last2=Francis |first2=Ch. |journal=Astronomy Letters |date=2012 |volume=38 |issue=5 |page=331 |doi=10.1134/S1063773712050015 |arxiv=1108.4971 }}

|b-v=

|u-b=

|variable=SRb{{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 }}

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{{Starbox astrometry

|radial_v= {{val|−46.87|0.09}}{{cite journal | display-authors=1 | last1=Famaey | first1=B. | last2=Pourbaix | first2=D. | last3=Frankowski | first3=A. | last4=van Eck | first4=S. | last5=Mayor | first5=M. | last6=Udry | first6=S. | last7=Jorissen | first7=A. | title=Spectroscopic binaries among Hipparcos M giants. I. Data, orbits, and intrinsic variations | journal=Astronomy and Astrophysics | volume=498 | issue=2 | pages=627–640 |date=May 2009 | doi=10.1051/0004-6361/200810698 | bibcode=2009A&A...498..627F |arxiv = 0901.0934 | s2cid=18739721 }}

|prop_mo_ra=−4.911

|prop_mo_dec=12.062

|parallax=3.9187

|p_error=0.1886

|parallax_footnote=

|absmag_v=+0.13

}}

{{starbox detail

|mass=3.7{{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 }}

|temperature=3,830

|luminosity=5,021{{cite journal |bibcode=2017MNRAS.471..770M |title=Fundamental parameters and infrared excesses of Tycho-Gaia stars |last1=McDonald |first1=I. |last2=Zijlstra |first2=A. A. |last3=Watson |first3=R. A. |journal=Monthly Notices of the Royal Astronomical Society |date=2017 |volume=471 |issue=1 |page=770 |doi=10.1093/mnras/stx1433 |doi-access=free |arxiv=1706.02208 }}

|radius=239

|gravity=2.33

|metal_fe=−0.32

|age_myr=

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{{Starbox catalog

|names={{odlist|BD=+79°110|HD=22689|HIP=17881|HR=|SAO=594}}{{cite simbad|title=V* SS Cep|access-date=2025-02-28}}

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{{Starbox reference

|Simbad=SS+Cep

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SS Cephei is a semiregular variable star in the constellation Cepheus. It is of spectral type M5III, and has an estimated temperature of about 3,700 K. The star is about 830 light-years (260 parsecs) from Earth. The brightness of SS Cephei varies between magnitude 6.9 and 7.9.

File:SSCepLightCurve.png for SS Cephei, plotted from Hipparcos data{{cite journal

| title=The HIPPARCOS and TYCHO catalogues | author=EAS

| journal=Astrometric and Photometric Star Catalogues Derived from the ESA Hipparcos Space Astrometry Mission

| publication-place=Noordwijk, Netherlands | publisher=ESA Publications Division

| year=1997 | series=ESA SP Series | volume=1200 | isbn=9290923997

| bibcode=1997HIP...C......0E

| url=https://cdsarc.cds.unistra.fr/viz-bin/ftp-index?/ftp/cats/more/HIP/cdroms/cats

| access-date=3 October 2024}}

]]

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