Astronomy:Kepler-385
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Cygnus[1] |
| Right ascension | 19h 37m 21.23819s[2] |
| Declination | +50° 20′ 11.5477″[2] |
| Apparent magnitude (V) | 15.76[3] |
| Astrometry | |
| Proper motion (μ) | RA: 2.738[2] mas/yr Dec.: -5.398[2] mas/yr |
| Parallax (π) | 0.6597 ± 0.0183[2] mas |
| Distance | 4,900 ± 100 ly (1,520 ± 40 pc) |
| Details[4] | |
| Mass | 0.99±0.03 M☉ |
| Radius | 1.09±0.05 R☉ |
| Surface gravity (log g) | 4.19±0.10 cgs |
| Temperature | 5835±64 K |
| Metallicity [Fe/H] | 0.010±0.037 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
Kepler-385 (also designated KOI-2433) is an F-type main-sequence star located about 4,900 light-years (1,500 parsecs) away from Earth in the constellation of Cygnus. The star is 10% larger and 5% hotter than the Sun. The star has at least three, and potentially up to seven, exoplanets discovered orbiting it.[6][7]
The star has a mass of 1.05 solar masses, a radius of 1.157 solar radii, a temperature of 5829 Kelvin and a luminosity of 1.39 times the solar luminosity.[3]
Planetary system
Kepler-385 was observed by the Kepler space telescope, which initially detected a total of seven planet candidates. Two of these, KOI-2433.01 & .02, were confirmed in 2014 as Kepler-385 b & c,[8] and a third, KOI-2433.03, was confirmed in 2020 as Kepler-385 d.[9] These confirmations were part of studies using statistical validation to confirm large numbers of Kepler candidates. The candidate KOI-2433.05 was shown to be a false positive.[4]
In 2023, a new updated catalog of Kepler candidates was presented, including an eighth candidate around Kepler-385, KOI-2433.08, making it a candidate seven-planet system.[4][6] Kepler-385 is tied with Kepler-90 - a confirmed eight-planet system - as the Kepler system with the most planet candidates.
Template:Orbitbox planet hypotheticalTemplate:Orbitbox planet hypothetical| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius
Template:Orbitbox planet hypothetical Template:Orbitbox planet hypothetical |
|---|---|---|---|---|---|---|
| b | — | 0.097 | 10.04381±0.00008 | — | — | 2.313+0.210 −0.162 R⊕ |
| c | — | 0.127 | 15.16213±0.00014 | — | — | 2.406+0.549 −0.146 R⊕ |
| d | — | 0.302 | 56.41581±0.00135 | — | — | 2.423+0.210 −0.161 R⊕ |
Reference
- ↑ "Finding the constellation which contains given sky coordinates". 2 August 2008. http://djm.cc/constellation.html.
- ↑ 2.0 2.1 2.2 2.3 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 3.0 3.1 3.2 "Kepler-385 | NASA Exoplanet Archive". https://exoplanetarchive.ipac.caltech.edu/overview/Kepler-385.
- ↑ 4.0 4.1 4.2 4.3 Lissauer, Jack J. et al. (November 2023). "Updated Catalog of Kepler Planet Candidates: Focus on Accuracy and Orbital Periods". The Planetary Science Journal. Data is available here.
- ↑ "Kepler-385". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-385.
- ↑ 6.0 6.1 "Scorching, Seven-Planet System Revealed by New Kepler Exoplanet List - NASA" (in en-US). 2023-11-02. https://www.nasa.gov/general/scorching-seven-planet-system-revealed-by-new-kepler-exoplanet-list/.
- ↑ Anderson, Natali (2023-11-06). "Kepler-385 Hosts Seven Large Exoplanets, Astronomers Say | Sci.News" (in en-US). https://www.sci.news/astronomy/kepler-385-exoplanets-12423.html.
- ↑ Rowe, Jason F. et al. (March 2014). "Validation of Kepler's Multiple Planet Candidates. III. Light Curve Analysis and Announcement of Hundreds of New Multi-planet Systems". The Astrophysical Journal 784 (1): 45. doi:10.1088/0004-637X/784/1/45. Bibcode: 2014ApJ...784...45R.
- ↑ Armstrong, David J.; Gamper, Jevgenij; Damoulas, Theodoros (July 2021). "Exoplanet validation with machine learning: 50 new validated Kepler planets". Monthly Notices of the Royal Astronomical Society 504 (4): 5327-5344. doi:10.1093/mnras/staa2498. Bibcode: 2021MNRAS.504.5327A.
 |  |
