109 Piscium
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Pisces |
| Right ascension | 01h 44m 55.82s[1] |
| Declination | +20° 04′ 59.3″[1] |
| Apparent magnitude (V) | 6.292 |
| Characteristics | |
| Spectral type | G5 IV |
| U−B color index | 0.23 |
| B−V color index | 0.720 |
| Variable type | none |
| Astrometry | |
| Proper motion (μ) | RA: −44.75 ± 0.61[1] mas/yr Dec.: −105.35 ± 0.37[1] mas/yr |
| Parallax (π) | 30.70 ± 0.43[1] mas |
| Distance | 106 ± 1 ly (32.6 ± 0.5 pc) |
| Absolute magnitude (MV) | 3.73[2] |
| Details | |
| Mass | 1.11 ± 0.03[3] M☉ |
| Radius | 1.69 ± 0.06[3] R☉ |
| Luminosity | 2.79[3] L☉ |
| Temperature | 5614 ± 80 K |
| Metallicity [Fe/H] | +0.1 ± 0.06 dex |
| Rotation | 32.6 ± 1.6 days[4] |
| Rotational velocity (v sin i) | 1.3[2] km/s |
| Age | 6.75 ± 0.71[3] Gyr |
| Other designations | |
HD 10697, HIP 8159, Gl 72, HR 508, BD+19°282 | |
109 Piscium is a yellow subgiant located about 106 light years away in the constellation Pisces. It has a mass to that of the Sun, and has a higher abundance of iron.
Planetary system
The star rotates at an inclination of 69+21
−26 degrees relative to Earth.[4]
In 1999 an extrasolar planet was detected around this star.[5] It is probable that this planet shares that inclination.[6][7]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >6.38 ± 0.53 MJ | 2.16 ± 0.12 | 1076.4 ± 2.4 | 0.1023 ± 0.0096 | — | — |
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
References
- 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752
. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry - 1 2 Pizzolato, N.; Maggio, A.; Sciortino, S. (September 2000), "Evolution of X-ray activity of 1-3 Msun late-type stars in early post-main-sequence phases", Astronomy and Astrophysics, 361: 614–628, Bibcode:2000A&A...361..614P.
- 1 2 3 4 Ghezzi, L.; et al. (December 2010), "Metallicities of Planet-hosting Stars: A Sample of Giants and Subgiants", The Astrophysical Journal, 725 (1): 721–733, arXiv:1008.3539, Bibcode:2010ApJ...725..721G, doi:10.1088/0004-637X/725/1/721.
- 1 2 Simpson, E. K.; et al. (November 2010), "Rotation periods of exoplanet host stars", Monthly Notices of the Royal Astronomical Society, 408 (3): 1666–1679, arXiv:1006.4121, Bibcode:2010MNRAS.408.1666S, doi:10.1111/j.1365-2966.2010.17230.x. as "HD 10697"
- ↑ Vogt; et al. (2000). "Six New Planets from the Keck Precision Velocity Survey". The Astrophysical Journal. 536 (2): 902–914. arXiv:astro-ph/9911506. Bibcode:2000ApJ...536..902V. doi:10.1086/308981. Archived from the original on 29 April 2009. Retrieved 2009-04-09.
- ↑ "hd_10697_b". Extrasolar Planet Encyclopaedia. Retrieved November 12, 2012.
- ↑ Roberto Sanchis-Ojeda; Josh N. Winn; Daniel C. Fabrycky (2012). "Starspots and spin-orbit alignment for Kepler cool host stars". arXiv:1211.2002. Bibcode:2013AN....334..180S. doi:10.1002/asna.201211765.
- ↑ Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
External links
- "HD 10697". SIMBAD. Retrieved 17 April 2006.
- "Notes for star HD 10697". The Extrasolar Planets Encyclopaedia. Retrieved 17 April 2006.
- "109 Piscium". SolStation. Archived from the original on 16 March 2006. Retrieved 17 April 2006.
Coordinates: 
01h 44m 55s, +20° 04′ 59″
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