astro.wikisort.org - Star
HD 106315, also known as K2-109, is a F-type main-sequence star about 340 light-years away. The star is relatively metal-poor, having 60% of solar concentration of iron.[5]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Virgo |
| Right ascension | 12h 13m 53.3962s[1] |
| Declination | −00° 23′ 36.5534″[1] |
| Apparent magnitude (V) | 8.951[2] |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | F5V[3] |
| B−V color index | 0.45[2] |
| Astrometry | |
| Radial velocity (Rv) | −3.2±0.3[4] km/s |
| Proper motion (μ) | RA: −2.36±0.03[4] mas/yr[4] Dec.: 11.943±0.019[4] mas/yr[4] |
| Parallax (π) | 9.1725 ± 0.0221 mas[4] |
| Distance | 355.6 ± 0.9 ly (109.0 ± 0.3 pc) |
| Details[5] | |
| Mass | 1.154±0.042 M☉ |
| Radius | 1.269±0.024 R☉ |
| Surface gravity (log g) | 4.291±0.025 cgs |
| Temperature | 6364±87 K |
| Metallicity [Fe/H] | −0.22±0.09 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
Multiplicity surveys did not detect any stellar companions to HD 106315 by 2020.[5]
Planetary system
Two planets were detected by transit method in 2017.[6] The large planetary radii imply both planets have a massive steam atmosphere for planet b and hydrogen-helium atmosphere for planet c.[5] The planetary system of HD 106315 is rather unstable and current planetary orbits are the outcome of violent dynamical history,[7] strongly affected by relativistic effects.[8] The orbits of planets are nearly coplanar, and orbit of c is well aligned with the equatorial plane of the star, misalignment been equal to -10+3.6
−3.8°.[9]
Since 2017, third outer planet with mass above 45MEarth is suspected to exist in the system.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 10.5±3.1[5] M🜨 | 0.0924+0.0011 −0.0012 |
9.55288±0.00021 | 0 | 87.6+3.0 −1.7° |
2.4±0.2 R🜨 |
| c | 12.0±3.8[5] M🜨 | 0.1565+0.0019 −0.0020 |
21.05652±0.00012 | 0 | 88.89+0.69 −0.51° |
4.379±0.086 R🜨 |
References
- "HD 106315", SIMBAD, Centre de données astronomiques de Strasbourg, retrieved 26 July 2022
- Crossfield, Ian J. M.; Ciardi, David R.; Isaacson, Howard; Howard, Andrew W.; Petigura, Erik A.; Weiss, Lauren M.; Fulton, Benjamin J.; Sinukoff, Evan; Schlieder, Joshua E.; Mawet, Dimitri; Ruane, Garreth; De Pater, Imke; De Kleer, Katherine; Davies, Ashley G.; Christiansen, Jessie L.; Dressing, Courtney D.; Hirsch, Lea; Benneke, Björn; Crepp, Justin R.; Kosiarek, Molly; Livingston, John; Gonzales, Erica; Beichman, Charles A.; Knutson, Heather A. (2017). "Two Small Transiting Planets and a Possible Third Body Orbiting HD 106315". The Astronomical Journal. 153 (6): 255. arXiv:1701.03811. Bibcode:2017AJ....153..255C. doi:10.3847/1538-3881/aa6e01. S2CID 55601944.
- Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.
- Vallenari, A.; et al. (Gaia Collaboration) (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. arXiv:2208.00211. doi:10.1051/0004-6361/202243940. Gaia DR3 record for this source at VizieR.
- Kosiarek, Molly R.; et al. (2021). "Physical Parameters of the Multiplanet Systems HD 106315 and GJ 9827". The Astronomical Journal. 161 (1): 47. arXiv:2009.03398. Bibcode:2021AJ....161...47K. doi:10.3847/1538-3881/abca39. S2CID 221534625.
- Rodriguez, Joseph E.; Zhou, George; Vanderburg, Andrew; Eastman, Jason D.; Kreidberg, Laura; Cargile, Phillip A.; Bieryla, Allyson; Latham, David W.; Irwin, Jonathan; Mayo, Andrew W.; Calkins, Michael L.; Esquerdo, Gilbert A.; Mink, Jessica (2017). "A Multi-planet System Transiting the V = 9 Rapidly Rotating F-Star HD 106315". The Astronomical Journal. 153 (6): 256. arXiv:1701.03807. Bibcode:2017AJ....153..256R. doi:10.3847/1538-3881/aa6dfb. S2CID 118983037.
- Turrini, D.; Zinzi, A.; Belinchon, J. A. (2020). "Normalized angular momentum deficit: A tool for comparing the violence of the dynamical histories of planetary systems". Astronomy and Astrophysics. 636: A53. arXiv:2003.05366. Bibcode:2020A&A...636A..53T. doi:10.1051/0004-6361/201936301. S2CID 212657397.
- Marzari, F.; Nagasawa, M. (2020). "Secular evolution of close-in planets: The effects of general relativity". Monthly Notices of the Royal Astronomical Society. 493 (1): 427. arXiv:2001.09801. Bibcode:2020MNRAS.493..427M. doi:10.1093/mnras/staa271.
- Zhou, George; Rodriguez, Joseph E.; Vanderburg, Andrew; Quinn, Samuel N.; Irwin, Jonathan; Huang, Chelsea X.; Latham, David W.; Bieryla, Allyson; Esquerdo, Gilbert A.; Berlind, Perry; Calkins, Michael L. (2018). "The Warm Neptunes around HD 106315 Have Low Stellar Obliquities". The Astronomical Journal. 156 (3): 93. arXiv:1807.00024. Bibcode:2018AJ....156...93Z. doi:10.3847/1538-3881/aad085. S2CID 118864208.
На других языках
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HD 106315 (EPIC 201437844) — звезда в созвездии Дева, которая находится на расстоянии около 350 световых лет от Солнца. Вокруг звезды обращаются, как минимум, две планеты.Текст в блоке "Читать" взят с сайта "Википедия" и доступен по лицензии Creative Commons Attribution-ShareAlike; в отдельных случаях могут действовать дополнительные условия.
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2019-2025
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