TYC 9486-927-1: Difference between revisions

TYC 9486-927-1
	; A light curve for FT Octantis, plotted from TESS data
Observation data; Epoch J2000 Equinox J2000
Constellation	Octans
Right ascension	21h 25m 27.4805s
Declination	−81° 38′ 27.692″
Apparent magnitude (V)	11.5 - 12.0
Characteristics
Spectral type	M1 V
Variable type	BY Dra
Astrometry
Radial velocity (Rv)	8.7±4.6 km/s
Proper motion (μ)	RA: 60.645(46) mas/yr ; Dec.: −107.740(48) mas/yr
Parallax (π)	29.0266 ± 0.0401 mas
Distance	112.4 ± 0.2 ly ; (34.45 ± 0.05 pc)
Details
Mass	0.53 M☉
Radius	0.46 R☉
Luminosity	0.032 L☉
Surface gravity (log g)	4.3 cgs
Temperature	3,490 K
Metallicity [Fe/H]	−1.3 dex
Rotation	0.541945 days
Rotational velocity (v sin i)	43.5±1.2 km/s
Age	10-45 Myr
Other designations
	2MASS J21252752-8138278, FT Octantis
Database references
SIMBAD	data

Browse history interactively

← Previous edit Next edit →

Content deleted Content added

VisualWikitext

Inline

Revision as of 20:59, 16 May 2024

TYC 9486-927-1 (also known as 2MASS J21252752-8138278) is the primary of a possible trinary star system located at a distance of 34.5 parsecs from Earth in the southern direction in the constellation of Octans. It is a BY Draconis variable, with large starspots causing it to change brightness as it rotates every 13 hours.^[3]

TYC 9486-927-1 has rapid rotation and coronal and chromospheric activity suggestive of a young age. Observations and multi-epoch radial velocity data suggest that TYC 9486-927-1 is a single, rapidly rotating star rather than a spectroscopic or tight visual binary. However, it is still possible that TYC 9486-927-1 is an equal mass binary with a face-on orbit and close separation.^[4]

The candidate secondary stellar companion is 2MASS J21121598–8128452. It is a red dwarf star of spectral class M5.5. Its projected separation from the primary would be 62,700 AU. The candidate tertiary companion is 2MASS J21192028–8145446 - of spectral class M6 or M7 and at a projected separation of 31,000 AU from the primary.^[5]^: 7

Planetary system

The planet 2MASS J21265040-8140293 orbits TYC 9486-927-1 at a projected separation of 7400 AU.^[5] With a mass from 11.6 to 15 Jupiter masses, it is considered to be either a brown dwarf, or a giant planet.^[9]^[10]

The TYC 9486-927-1 planetary system
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
2MASS J2126–8140/b	13.3 (± 1.7)^[11] $M$ _J	6,900^[8]	328 725 000^{[citation needed]}	—	—	—

References

^ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.
^ ^a ^b ^c ^d 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.
^ ^a ^b ^c ^d Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports. 5.1. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID 125853869.
^ ^a ^b ^c Torres, C. A. O.; Quast, G. R.; Da Silva, L.; de la Reza, R.; Melo, C. H. F.; Sterzik, M. (2006). "Search for associations containing young stars (SACY). I. Sample and searching method". Astronomy and Astrophysics. 460 (3): 695. arXiv:astro-ph/0609258. Bibcode:2006A&A...460..695T. doi:10.1051/0004-6361:20065602. S2CID 16080025.
^ ^a ^b ^c Jones, H R A.; Caballero, J. A.; Beamín, J. C.; Barrado, D.; Sarro, L. M.; Marocco, F.; Smart, R. L. (2019), "The Gaia Ultra-Cool Dwarf Sample – II: Structure at the end of the main sequence", Monthly Notices of the Royal Astronomical Society, 485 (3): 4423–4440, arXiv:1902.07571, Bibcode:2019MNRAS.485.4423S, doi:10.1093/mnras/stz678, S2CID 119421722{{citation}}: CS1 maint: unflagged free DOI (link)
^ ^a ^b Gaidos, E.; et al. (September 2014). "Trumpeting M dwarfs with CONCH-SHELL: a catalogue of nearby cool host-stars for habitable exoplanets and life". Monthly Notices of the Royal Astronomical Society. 443 (3): 2561–2578. arXiv:1406.7353. Bibcode:2014MNRAS.443.2561G. doi:10.1093/mnras/stu1313. S2CID 119234492.{{cite journal}}: CS1 maint: unflagged free DOI (link)
^ ^a ^b Steinmetz, M.; et al. (2020). "VizieR Online Data Catalog: RAVE 6th data release (Steinmetz+, 2020)". Vizier Online Data Catalog. Bibcode:2020yCat.3283....0S.
^ ^a ^b ^c ^d Deacon, N. R.; Schlieder, J. E.; Murphy, S. J. (2016). "A nearby young M dwarf with a wide, possibly planetary-mass companion". Monthly Notices of the Royal Astronomical Society. 457 (3): 3191. arXiv:1601.06162. Bibcode:2016MNRAS.457.3191D. doi:10.1093/mnras/stw172. S2CID 18220333.{{cite journal}}: CS1 maint: unflagged free DOI (link)
^ Gagné, Jonathan; Lafrenière, David; Doyon, René; Malo, Lison; Artigau, Étienne (2014). "BANYAN. II. Very Low Mass and Substellar Candidate Members to Nearby, Young Kinematic Groups with Previously Known Signs of Youth". The Astrophysical Journal. 783 (2): 121. arXiv:1312.5864. Bibcode:2014ApJ...783..121G. doi:10.1088/0004-637X/783/2/121. S2CID 119251619.
^ Reid, I. Neill; Cruz, Kelle L.; Kirkpatrick, J. Davy; Allen, Peter R.; Mungall, F.; Liebert, James; Lowrance, Patrick; Sweet, Anne (2008). "Meeting the Cool Neighbors. X. Ultracool Dwarfs from the 2MASS All-Sky Data Release". The Astronomical Journal. 136 (3): 1290. arXiv:0806.3413. Bibcode:2008AJ....136.1290R. doi:10.1088/0004-6256/136/3/1290.
^ "Planet 2MASS J2126-8140". Extrasolar Planets Encyclopaedia. Retrieved 2016-01-27.

[MAST-1] "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.

[Gaia_DR3-2] 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.

[gcvs-3] Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports. 5.1. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID 125853869.

[sacy-4] Torres, C. A. O.; Quast, G. R.; Da Silva, L.; de la Reza, R.; Melo, C. H. F.; Sterzik, M. (2006). "Search for associations containing young stars (SACY). I. Sample and searching method". Astronomy and Astrophysics. 460 (3): 695. arXiv:astro-ph/0609258. Bibcode:2006A&A...460..695T. doi:10.1051/0004-6361:20065602. S2CID 16080025.

[Smart2019-5] Jones, H R A.; Caballero, J. A.; Beamín, J. C.; Barrado, D.; Sarro, L. M.; Marocco, F.; Smart, R. L. (2019), "The Gaia Ultra-Cool Dwarf Sample – II: Structure at the end of the main sequence", Monthly Notices of the Royal Astronomical Society, 485 (3): 4423–4440, arXiv:1902.07571, Bibcode:2019MNRAS.485.4423S, doi:10.1093/mnras/stz678, S2CID 119421722{{citation}}: CS1 maint: unflagged free DOI (link)

[conch-6] Gaidos, E.; et al. (September 2014). "Trumpeting M dwarfs with CONCH-SHELL: a catalogue of nearby cool host-stars for habitable exoplanets and life". Monthly Notices of the Royal Astronomical Society. 443 (3): 2561–2578. arXiv:1406.7353. Bibcode:2014MNRAS.443.2561G. doi:10.1093/mnras/stu1313. S2CID 119234492.{{cite journal}}: CS1 maint: unflagged free DOI (link)

[rave-7] Steinmetz, M.; et al. (2020). "VizieR Online Data Catalog: RAVE 6th data release (Steinmetz+, 2020)". Vizier Online Data Catalog. Bibcode:2020yCat.3283....0S.

[deacon-8] Deacon, N. R.; Schlieder, J. E.; Murphy, S. J. (2016). "A nearby young M dwarf with a wide, possibly planetary-mass companion". Monthly Notices of the Royal Astronomical Society. 457 (3): 3191. arXiv:1601.06162. Bibcode:2016MNRAS.457.3191D. doi:10.1093/mnras/stw172. S2CID 18220333.{{cite journal}}: CS1 maint: unflagged free DOI (link)

[banyan-9] Gagné, Jonathan; Lafrenière, David; Doyon, René; Malo, Lison; Artigau, Étienne (2014). "BANYAN. II. Very Low Mass and Substellar Candidate Members to Nearby, Young Kinematic Groups with Previously Known Signs of Youth". The Astrophysical Journal. 783 (2): 121. arXiv:1312.5864. Bibcode:2014ApJ...783..121G. doi:10.1088/0004-637X/783/2/121. S2CID 119251619.

[reid-10] Reid, I. Neill; Cruz, Kelle L.; Kirkpatrick, J. Davy; Allen, Peter R.; Mungall, F.; Liebert, James; Lowrance, Patrick; Sweet, Anne (2008). "Meeting the Cool Neighbors. X. Ultracool Dwarfs from the 2MASS All-Sky Data Release". The Astronomical Journal. 136 (3): 1290. arXiv:0806.3413. Bibcode:2008AJ....136.1290R. doi:10.1088/0004-6256/136/3/1290.

[Exoplanet.eu-11] "Planet 2MASS J2126-8140". Extrasolar Planets Encyclopaedia. Retrieved 2016-01-27.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

@@ Line 1: / Line 1: @@
+{{Short description|Primary star of a trinary star system in the constellation Octans}}
-{{Starbox begin
+{{Starbox begin}}
-| name = TYC 9486-927-1 1
+{{Starbox image
-}}
+| image = [[Image:FTOctLightCurve.png|250px]]
+| caption = A [[light curve]] for FT Octantis, plotted from ''[[Transiting Exoplanet Survey Satellite|TESS]]'' data<ref name=MAST/>
+}}
 {{Starbox observe
-| epoch =
+| epoch = J2000
 | constell = [[Octans]]
-| ra = {{RA|21|25|27.4899}}<ref name=ucac4/>
+| ra = {{RA|21|25|27.4805}}<ref name="Gaia DR3"/>
-| dec = {{DEC|–81|38|27.673}}<ref name=ucac4/>
+| dec = {{DEC|−81|38|27.692}}<ref name="Gaia DR3"/>
-| appmag_v = 11.821<ref name=ucac4/>
+| appmag_v = 11.5 - 12.0<ref name=gcvs/>
 }}
 {{Starbox character
 | class = M1 V<ref name=sacy/>
+| variable = [[BY Draconis variable|BY Dra]]<ref name=gcvs/>
 }}
 {{Starbox astrometry
-| radial_v = 8.7 ± 4.6<ref name=sacy/>
+| radial_v = {{val|8.7|4.6}}<ref name=sacy/>
-| prop_mo_ra =
+| prop_mo_ra = {{val|60.645|(46)}}
-| prop_mo_dec =
+| prop_mo_dec = {{val|−107.740|(48)}}
+| pm_footnote = <ref name="Gaia DR3"/>
-| parallax =
-| p_error =
+| parallax = 29.0266
+| p_error = 0.0401
-| parallax_footnote =
+| parallax_footnote = <ref name="Gaia DR3"/>
-| dist_ly =
-| dist_pc = {{val|26.7|5.7|4.7}}<ref name=deacon/>
 | absmag_v =
 }}
@@ Line 26: / Line 29: @@
 | age_myr = 10-45<ref name=deacon/>
 | metal =
-| mass = 0.4<ref name=deacon/>
+| mass = 0.53<ref name=Smart2019/>
+| radius = 0.46<ref name=conch/>
-| mass_mj =
-| radius =
 | temperature = 3,490<ref name=deacon/>
+| luminosity = 0.032<ref name=conch/>
-| luminosity_bolometric =
+| gravity = 4.3<ref name=rave/>
-| luminosity_visual =
+| rotation = 0.541945<ref name=gcvs/> days
-| gravity =
+| rotational_velocity = {{val|43.5|1.2}}<ref name=deacon/>
-| rotation =
-| rotational_velocity = 43.5 ± 1.2<ref name=deacon/>
+| metal_fe = −1.3<ref name=rave/>
-| age_gyr =
 }}
 {{Starbox catalog
-| names = 2MASS J21252752-8138278
+| names = 2MASS J21252752-8138278, [[variable star designation|FT]]&nbsp;Octantis
 }}
 {{Starbox reference
@@ Line 45: / Line 46: @@
 {{Starbox end}}
-'''TYC 9486-927-1''' (also known as '''2MASS J21252752-8138278''') is a [[star]] located at a distance of 26.7 (+5.7, -4.7)  parsecs from [[Earth]] in the southern direction in the constellation of [[Octans]]. It is a dwarf (luminosity class V) red (spectral class M1) variable by rotation.
+'''TYC 9486-927-1''' (also known as '''2MASS J21252752-8138278''') is the primary of a possible trinary [[star system]] located at a distance of 34.5  parsecs from [[Earth]] in the southern direction in the constellation of [[Octans]]. It is a [[BY Draconis variable]], with large starspots causing it to change brightness as it rotates every 13 hours.<ref name=gcvs/>
+TYC 9486-927-1 has rapid rotation and [[stellar corona|coronal]] and [[chromospheric activity]] suggestive of a young age. Observations and multi-epoch [[radial velocity]] data suggest that TYC 9486-927-1 is a single, rapidly rotating star rather than a [[spectroscopic]] or tight [[visual binary]]. However, it is still possible that TYC 9486-927-1 is an equal mass binary with a face-on orbit and close separation.<ref name=sacy/>
-The star is the primary object of a planetary system having the secondary object [[2MASS J21265040-8140293]]. This substellar object, being an exoplanet, is the most extensive [[planetary systems|planetary system]] known to date.{{Clarify|reason=What does extensive mean in this context|date=July 2020}}
+The candidate secondary stellar companion is 2MASS J21121598–8128452. It is a [[red dwarf]] star of spectral class M5.5. Its projected separation from the primary would be 62,700 [[astronomical unit|AU]]. The candidate tertiary companion is 2MASS J21192028–8145446 - of spectral class M6 or M7 and at a projected separation of 31,000 [[astronomical units|AU]] from the primary.<ref name=Smart2019/>{{rp|7}}
-TYC 9486-927-1 has rapid rotation and [[stellar corona|coronal]] and [[chromospheric activity]] suggestive of a young age. Observations and multi-epoch radial velocity data suggest that TYC 9486-927-1 is a single, rapidly rotating star rather than a [[spectroscopic]] or tight, [[visual binary]]. However, it is still possible that TYC 9486-927-1 is an equal mass binary with a face-on orbit and close separation.<ref name=sacy/>
 ==Planetary system==
+The planet [[2MASS J21265040-8140293]] orbits TYC 9486-927-1 at a projected separation of {{Val|7400|u=AU}}.<ref name=Smart2019>{{citation|arxiv=1902.07571|title=The Gaia Ultra-Cool Dwarf Sample – II: Structure at the end of the main sequence|year=2019|doi=10.1093/mnras/stz678|last1=Jones|first1=H R A.|last2=Caballero|first2=J. A.|last3=Beamín|first3=J. C.|last4=Barrado|first4=D.|last5=Sarro|first5=L. M.|last6=Marocco|first6=F.|last7=Smart|first7=R. L.|journal=Monthly Notices of the Royal Astronomical Society|volume=485|issue=3|pages=4423–4440|bibcode=2019MNRAS.485.4423S|s2cid=119421722}}</ref> With a mass from 11.6 to 15 [[Jupiter]] masses, it is considered to be either a brown dwarf, or a giant planet.<ref name=banyan/><ref name=reid/>
-The star is host to two planets; TYC 8998-760-1b, and TYC 8998-760-1c. The system was directly imaged in July 2020 by the [[Spectro-Polarimetric High-Contrast Exoplanet Research|SPHERE]] instrument on the VLT. <ref>{{Cite web|title=Astronomers Directly Image Two Giant Exoplanets around Young Sun-Like Star {{!}} Astronomy {{!}} Sci-News.com|url=http://www.sci-news.com/astronomy/directly-imaged-multi-planet-system-young-sun-like-star-08665.html|access-date=2020-07-25|website=Breaking Science News {{!}} Sci-News.com|language=en-US}}</ref>
+{{OrbitboxPlanet begin
+| name = TYC 9486-927-1
+| table_ref = <!--Reference for values in table (optional)-->
+}}
+{{OrbitboxPlanet
+| exoplanet = {{nowrap|[[2MASS J2126–8140]]/b}}
+| mass = 13.3 (± 1.7)<ref name=Exoplanet.eu>{{cite encyclopedia
+ |url        = https://exoplanet.eu/catalog/2m_j2126_81_b--2544/
+ |encyclopedia       = [[Extrasolar Planets Encyclopaedia]]
+ |title      = Planet 2MASS J2126-8140
+ |access-date = 2016-01-27
+}}</ref>
+| mass_earth = <!--Mass of the planet, in Earth masses (can use mass instead)-->
+| radius = <!-- Radius of the planet, in Jupiter radii -->
+| radius_earth = <!-- Radius of the planet, in Earth radii -->
+| semimajor = 6,900<ref name=deacon/>
+| period = 328 725 000{{Citation needed|date=January 2021}}
+| eccentricity = <!--Eccentricity of the planet-->
+| inclination = <!-- Orbital inclination (to the line of sight) -->
+}}
+{{Orbitbox end}}
+==References==
-b has a radius {{Jupiter radius|3}} a mass of {{Jupiter mass|14}}. 1c has a mass of at least {{Jupiter mass|6}}.
+{{Reflist|refs=
+<ref name="Gaia DR3">{{Cite Gaia DR3|6348514275456913792}}</ref>
-The two planets orbit at distances of 160 and 320 AU.
+<ref name=reid>{{cite journal|bibcode=2008AJ....136.1290R|title=Meeting the Cool Neighbors. X. Ultracool Dwarfs from the 2MASS All-Sky Data Release|journal=The Astronomical Journal|volume=136|issue=3|pages=1290|last1=Reid|first1=I. Neill|last2=Cruz|first2=Kelle L.|last3=Kirkpatrick|first3=J. Davy|last4=Allen|first4=Peter R.|last5=Mungall|first5=F.|last6=Liebert|first6=James|last7=Lowrance|first7=Patrick|last8=Sweet|first8=Anne|year=2008|doi=10.1088/0004-6256/136/3/1290|arxiv=0806.3413}}</ref>
-==2MASS J21265040-8140293==
-{{Main|2MASS J2126-8140}}
+<ref name=banyan>{{cite journal|bibcode=2014ApJ...783..121G|arxiv=1312.5864|title=BANYAN. II. Very Low Mass and Substellar Candidate Members to Nearby, Young Kinematic Groups with Previously Known Signs of Youth|journal=The Astrophysical Journal|volume=783|issue=2|pages=121|last1=Gagné|first1=Jonathan|last2=Lafrenière|first2=David|last3=Doyon|first3=René|last4=Malo|first4=Lison|last5=Artigau|first5=Étienne|year=2014|doi=10.1088/0004-637X/783/2/121|s2cid=119251619}}</ref>
-MASS J21265040-8140293 orbits it's host star TYC 9486-927-1.
-With a mass from 11.6 to 15 [[Jupiter]] masses, it is considered to be either a brown dwarf or a giant planet.<ref name="banyan" /><ref name="reid" />
+<ref name=deacon>{{cite journal|bibcode=2016MNRAS.457.3191D|arxiv=1601.06162|title=A nearby young M dwarf with a wide, possibly planetary-mass companion|journal=Monthly Notices of the Royal Astronomical Society|volume=457|issue=3|pages=3191|last1=Deacon|first1=N. R.|last2=Schlieder|first2=J. E.|last3=Murphy|first3=S. J.|year=2016|doi=10.1093/mnras/stw172|s2cid=18220333}}</ref>
-==References==
-{{Reflist|refs=
-<ref name=reid>{{cite journal|bibcode=2008AJ....136.1290R|title=Meeting the Cool Neighbors. X. Ultracool Dwarfs from the 2MASS All-Sky Data Release|journal=The Astronomical Journal|volume=136|issue=3|pages=1290|author1=Reid|first1=I. Neill|last2=Cruz|first2=Kelle L.|last3=Kirkpatrick|first3=J. Davy|last4=Allen|first4=Peter R.|last5=Mungall|first5=F.|last6=Liebert|first6=James|last7=Lowrance|first7=Patrick|last8=Sweet|first8=Anne|year=2008|doi=10.1088/0004-6256/136/3/1290|arxiv=0806.3413}}</ref>
+<ref name=sacy>{{cite journal|bibcode=2006A&A...460..695T|arxiv=astro-ph/0609258|title=Search for associations containing young stars (SACY). I. Sample and searching method|journal=Astronomy and Astrophysics|volume=460|issue=3|pages=695|last1=Torres|first1=C. A. O.|last2=Quast|first2=G. R.|last3=Da Silva|first3=L.|last4=de la Reza|first4=R.|last5=Melo|first5=C. H. F.|last6=Sterzik|first6=M.|year=2006|doi=10.1051/0004-6361:20065602|s2cid=16080025}}</ref>
+<ref name=gcvs>{{cite journal
-<ref name=banyan>{{cite journal|bibcode=2014ApJ...783..121G|arxiv=1312.5864|title=BANYAN. II. Very Low Mass and Substellar Candidate Members to Nearby, Young Kinematic Groups with Previously Known Signs of Youth|journal=The Astrophysical Journal|volume=783|issue=2|pages=121|author1=Gagné|first1=Jonathan|last2=Lafrenière|first2=David|last3=Doyon|first3=René|last4=Malo|first4=Lison|last5=Artigau|first5=Étienne|year=2014|doi=10.1088/0004-637X/783/2/121}}</ref>
+ | display-authors=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.
+ | title=General Catalogue of Variable Stars
+ | version=5.1 | journal=Astronomy Reports
+ | year=2017 | volume=61 | issue=1 | pages=80–88
+ | bibcode=2017ARep...61...80S  | s2cid=125853869
+ | doi=10.1134/S1063772917010085 }}</ref>
+<ref name=MAST>{{cite web
-<ref name=deacon>{{cite journal|bibcode=2016MNRAS.457.3191D|arxiv=1601.06162|title=A nearby young M dwarf with a wide, possibly planetary-mass companion|journal=Monthly Notices of the Royal Astronomical Society|volume=457|issue=3|pages=3191|author1=Deacon|first1=N. R.|last2=Schlieder|first2=J. E.|last3=Murphy|first3=S. J.|year=2016|doi=10.1093/mnras/stw172}}</ref>
+ | title=MAST: Barbara A. Mikulski Archive for Space Telescopes
+ | url=https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html
+ | publisher=Space Telescope Science Institute |access-date=8 December 2021}}</ref>
+<ref name=conch>{{cite journal
-<ref name=sacy>{{cite journal|bibcode=2006A&A...460..695T|arxiv=astro-ph/0609258|title=Search for associations containing young stars (SACY). I. Sample and searching method|journal=Astronomy and Astrophysics|volume=460|issue=3|pages=695|author1=Torres|first1=C. A. O.|last2=Quast|first2=G. R.|last3=Da Silva|first3=L.|last4=de la Reza|first4=R.|last5=Melo|first5=C. H. F.|last6=Sterzik|first6=M.|year=2006|doi=10.1051/0004-6361:20065602}}</ref>
+ | title=Trumpeting M dwarfs with CONCH-SHELL: a catalogue of nearby cool host-stars for habitable exoplanets and life
+ | display-authors=1 | last1=Gaidos | first1=E.
+ | last2=Mann | first2=A. W. | last3=Lépine | first3=S.
+ | last4=Buccino | first4=A. | last5=James | first5=D.
+ | last6=Ansdell | first6=M. | last7=Petrucci | first7=R.
+ | last8=Mauas | first8=P. | last9=Hilton | first9=E. J.
+ | journal=Monthly Notices of the Royal Astronomical Society
+ | volume=443 | issue=3 | pages=2561–2578 | date=September 2014
+ | doi=10.1093/mnras/stu1313 | arxiv=1406.7353
+ | bibcode=2014MNRAS.443.2561G | s2cid=119234492 }}</ref>
+<ref name=rave>{{cite journal |bibcode=2020yCat.3283....0S |title=VizieR Online Data Catalog: RAVE 6th data release (Steinmetz+, 2020) |last1=Steinmetz |first1=M. |last2=Matijevic |first2=G. |last3=Enke |first3=H. |last4=Zwitter |first4=T. |last5=Guiglion |first5=G. |last6=McMillan |first6=P. J. |last7=Kordopatis |first7=G. |last8=Valentini |first8=M. |last9=Chiappini |first9=C. |last10=Casagrande |first10=L. |last11=Wojno |first11=J. |last12=Anguiano |first12=B. |last13=Bienayme |first13=O. |last14=Bijaoui |first14=A. |last15=Binney |first15=J. |last16=Burton |first16=D. |last17=Cass |first17=P. |last18=De Laverny |first18=P. |last19=Fiegert |first19=K. |last20=Freeman |first20=K. |last21=Fulbright |first21=J. P. |last22=Gibson |first22=B. K. |last23=Gilmore |first23=G. |last24=Grebel |first24=E. K. |last25=Helmi |first25=A. |last26=Kunder |first26=A. |last27=Munari |first27=U. |last28=Navarro |first28=J. F. |last29=Parker |first29=Q. |last30=Ruchti |first30=G. R. |journal=Vizier Online Data Catalog |year=2020 |display-authors=1 }}</ref>
-<ref name=ucac4>{{cite journal|bibcode=2012yCat.1322....0Z|title=VizieR Online Data Catalog: UCAC4 Catalogue (Zacharias+, 2012)|journal=VizieR On-line Data Catalog: I/322A.  Originally Published in: 2012yCat.1322....0Z; 2013AJ....145...44Z|volume=1322|author1=Zacharias|first1=N.|last2=Finch|first2=C. T.|last3=Girard|first3=T. M.|last4=Henden|first4=A.|last5=Bartlett|first5=J. L.|last6=Monet|first6=D. G.|last7=Zacharias|first7=M. I.|year=2012}}</ref>
 }}
 {{Stars of Octans}}
+{{DEFAULTSORT:TYC 9486-927-1}}
 [[Category:Octans]]
-[[Category:2MASS objects]]
+[[Category:2MASS objects|J21252752-8138278]]
 [[Category:Planetary systems with one confirmed planet]]
 [[Category:M-type main-sequence stars]]
+[[Category:Multiple star systems|3]]
+[[Category:Objects with variable star designations|Octantis, FT]]

Observation data Epoch J2000 Equinox J2000
A light curve for FT Octantis, plotted from TESS data^[1]
Constellation	Octans
Right ascension	21^h 25^m 27.4805^s^[2]
Declination	−81° 38′ 27.692″^[2]
Apparent magnitude (V)	11.5 - 12.0^[3]
Characteristics
Spectral type	M1 V^[4]
Variable type	BY Dra^[3]
Astrometry

Radial velocity (R_v)	8.7±4.6^[4] km/s
Proper motion (μ)	RA: 60.645(46) mas/yr^[2] Dec.: −107.740(48) mas/yr^[2]
Parallax (π)	29.0266 ± 0.0401 mas^[2]
Distance	112.4 ± 0.2 ly (34.45 ± 0.05 pc)

Details

Mass	0.53^[5] `M`_☉
Radius	0.46^[6] `R`_☉
Luminosity	0.032^[6] `L`_☉
Surface gravity (log g)	4.3^[7] cgs
Temperature	3,490^[8] K
Metallicity [Fe/H]	−1.3^[7] dex
Rotation	0.541945^[3] days
Rotational velocity (v sin i)	43.5±1.2^[8] km/s
Age	10-45^[8] Myr

Other designations
2MASS J21252752-8138278, FT Octantis
Database references
SIMBAD	data