[ The star is moving closer to the Earth with a heliocentric radial velocity of −45.5 km/s.[6] It has one known exoplanet.[22]]With a stellar classification of G3 Va,[4] this is a Sun-like star with a similar mass[11] but a 91%[12] larger radius. (Cowley and Bidelman (1979) had this classified as a subgiant star that is leaving the main sequence.[26]) It is 6.75[11] billion years old with a higher abundance of iron[6] and a low projected rotational velocity of 1.3 km/s.[10] The star is radiating 2.9[12] times the Sun's luminosity from its photosphere at an effective temperature of 5,442 K.[12]
Planetary system
On 1 November 1999 the discovery of an extrasolar planet orbiting this star was announced.[22][33]
The star rotates at an inclination of 69{{±|21|26}} degrees relative to Earth.[18] It is probable that this planet shares that inclination.[1][2]
{{OrbitboxPlanet begin
| table_ref = [37]
}}{{OrbitboxPlanet
| exoplanet = b
| mass = >6.38 ± 0.53
| period = 1076.4 ± 2.4
| semimajor = 2.16 ± 0.12
| eccentricity = 0.1023 ± 0.0096
}}{{Orbitbox end}}Popular culture
In the 1983 Star Trek novel The Wounded Sky by Diane Duane, the USS Enterprise intentionally causes 109 Piscium to go supernova by entering warp drive too close to the star, in order to destroy a group of pursuing Klingon vessels. Captain Kirk experiences an uneasy sense that he may "get in trouble with Starfleet" over this arguably rash course of action.
See also
- 54 Piscium
- Lists of exoplanets
References
1. ^{{Cite web|url=http://exoplanet.eu/catalog/hd_10697_b/|title=hd_10697_b|publisher= Extrasolar Planet Encyclopaedia|accessdate=12 November 2012}}
2. ^{{cite journal|title=Starspots and spin-orbit alignment for Kepler cool host stars|journal=Astronomische Nachrichten |volume=334 |issue=1–2 |pages=180–183 |first1=Roberto | last1=Sanchis-Ojeda|first2=Josh N. | last2=Winn|first3=Daniel C. | last3=Fabrycky|date=2012|arxiv=1211.2002|bibcode = 2013AN....334..180S |doi = 10.1002/asna.201211765 }}
3. ^1 2 3 {{citation | last1=Pizzolato | first1=N. | last2=Maggio | first2=A. | last3=Sciortino | first3=S. | title=Evolution of X-ray activity of 1-3 Msun late-type stars in early post-main-sequence phases | journal=Astronomy and Astrophysics | volume=361 | pages=614–628 | bibcode=2000A&A...361..614P | postscript=. |date=September 2000}}
4. ^1 2 3 4 {{citation | title=Stellar parameters and chemical abundances of 223 evolved stars with and without planets | journal=Astronomy & Astrophysics | display-authors=1 | last1=Jofré | first1=E. | last2=Petrucci | first2=R. | last3=Saffe | first3=C. | last4=Saker | first4=L. | last5=de la Villarmois | first5=E. Artur | last6=Chavero | first6=C. | last7=Gómez | first7=M. | last8=Mauas | first8=P. J. D. | volume=574 | pages=A50 | year=2015 | postscript=. | bibcode=2015A&A...574A..50J | doi=10.1051/0004-6361/201424474 | arxiv=1410.6422}}
5. ^1 2 {{citation | first1=P. | last1=Keenan | first2=R. | last2=McNeil | title=The Perkins catalog of revised MK types for the cooler stars | journal=Astrophysical Journal Supplement Series | volume=71 | pages=245–266 | date=October 1989 | bibcode=1989ApJS...71..245K | doi=10.1086/191373 | postscript=. }}
6. ^1 2 3 4 {{citation | display-authors=1 | last1=Ghezzi | first1=L. | last2=Cunha | first2=K. | last3=Schuler | first3=S. C. | last4=Smith | first4=V. V. | title=Metallicities of Planet-hosting Stars: A Sample of Giants and Subgiants | journal=The Astrophysical Journal | volume=725 | issue=1 | pages=721–733 | doi=10.1088/0004-637X/725/1/721 | bibcode=2010ApJ...725..721G | postscript=. |arxiv = 1008.3539 |date=December 2010}}
7. ^1 2 3 4 5 6 {{cite journal | title=Stellar Diameters and Temperatures. III. Main-Sequence A, F, G, and K Stars: Additional High-Precision Measurements and Empirical Relations | last1=Boyajian | first1=Tabetha S. | last2=von Braun | first2=Kaspar | last3=Van Belle | first3=Gerard | last4=Farrington | first4=Chris | last5=Schaefer | first5=Gail | last6=Jones | first6=Jeremy | last7=White | first7=Russel | last8=McAlister | first8=Harold A. | last9=Ten Brummelaar | first9=Theo A. | last10=Ridgway | first10=Stephen | last11=Gies | first11=Douglas | last12=Sturmann | first12=Laszlo | last13=Sturmann | first13=Judit | last14=Turner | first14=Nils H. | last15=Goldfinger | first15=P. J. | last16=Vargas | first16=Norm | display-authors=1 | journal=The Astrophysical Journal | volume=771 | issue=1 | at=40 | year=2013 | arxiv=1306.2974 | bibcode=2013ApJ...771...40B | doi=10.1088/0004-637X/771/1/40 }}
8. ^1 2 {{citation | display-authors=1 | last1=Simpson | first1=E. K. | last2=Baliunas | first2=S. L. | last3=Henry | first3=G. W. | last4=Watson | first4=C. A. | title=Rotation periods of exoplanet host stars | journal=Monthly Notices of the Royal Astronomical Society | volume=408 | issue=3 | pages=1666–1679 | doi=10.1111/j.1365-2966.2010.17230.x | bibcode=2010MNRAS.408.1666S | postscript=. |arxiv = 1006.4121 |date=November 2010}} as "HD 10697"
9. ^1 {{cite journal | title=Catalog of Nearby Exoplanets | last1=Butler | first1=R. P. | last2=Wright | first2=J. T. | last3=Marcy | first3=G. W. | last4=Fischer | first4=D. A. | last5=Vogt | first5=S. S. | last6=Tinney | first6=C. G. | last7=Jones | first7=H. R. A. | last8=Carter | first8=B. D. | last9=Johnson | first9=J. A. | last10=McCarthy | first10=C. | last11=Penny | first11=A. J. | displayauthors=1 | journal=The Astrophysical Journal | volume=646 | issue=1 | pages=505–522 | year=2006 | arxiv=astro-ph/0607493 | bibcode=2006ApJ...646..505B | doi=10.1086/504701 }}
10. ^1 2 3 4 5 {{cite DR2|95652018353917056}}
11. ^1 2 {{cite press release | title=Astronomers discover six new planets orbiting nearby stars | date=1 November 1999 | publisher=W. M. Keck Observatory | location=Kamuela, Hawaii | url=http://www.keckobservatory.org/astronomers_discover_six_new_planets_orbiting_nearby_stars/ | accessdate=19 December 2017 }}
12. ^1 {{cite simbad | title=109 Piscium | access-date=2017-12-20}}
13. ^1 {{cite journal | title=Six New Planets from the Keck Precision Velocity Survey | last1=Vogt | first1=Steven S. | last2=Marcy | first2=Geoffrey W. | last3=Butler | first3=R. Paul | last4=Apps | first4=Kevin | display-authors=1 | journal=The Astrophysical Journal | volume=536 | issue=2 | pages=902–914 | year=2000 | arxiv=astro-ph/9911506 | bibcode=2000ApJ...536..902V | doi=10.1086/308981 }}
14. ^1 {{citation | last1=Cowley | first1=A. P. | last2=Bidelman | first2=W. P. | title=MK spectral types for some F and G stars | journal=Publications of the Astronomical Society of the Pacific | volume=91 | pages=83–86 | date=February 1979 | doi=10.1086/130446 | bibcode=1979PASP...91...83C }}