Kepler-223

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Kepler-223
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Cygnus
Right ascension 19h 53m 16.4202s [1]
Declination +47° 16′ 46.308″ [1]
Characteristics
Apparent magnitude  (g)15.903 [2]
Apparent magnitude  (r)15.301 [2]
Apparent magnitude  (i)15.105 [2]
Apparent magnitude  (z)14.963 [2]
Apparent magnitude  (D51)15.667 [2]
Apparent magnitude  (J)14.095 [2]
Apparent magnitude  (H)13.727 [2]
Apparent magnitude  (K)13.632 [2]
J−K color index 0.463 [2]
Characteristics
Spectral type G [3]
Astrometry
Proper motion (μ)RA: −4.227(25) mas/yr [1]
Dec.: −11.094(24) mas/yr [1]
Parallax (π)0.5005±0.0215  mas [1]
Distance 6,500 ± 300  ly
(2,000 ± 90  pc)
Details
Radius 1.095 [2]   R☉
Surface gravity (log g)4.386 [2]   cgs
Temperature 5,599 [2]   K
Metallicity -0.211 [2]
Other designations
Gaia DR2  2086337508581280256, KOI-730, KIC  10227020, 2MASS  J195316.40+471646.1 [4]
Database references
SIMBAD data
KIC data
Kepler-223 6:4:4:3 KOI 730 3-4-4-6.png
Kepler-223 6:4:4:3
Kepler-223 8:6:4:3 KOI 730 3-4-6-8.png
Kepler-223 8:6:4:3

Kepler-223 (KOI-730, KIC 10227020) is a G5V star with an extrasolar planetary system discovered by the Kepler mission. Studies indicate that the Kepler-223 star system consists of 4 planets orbiting the star. [5] [3]

Contents

Planetary system

The Kepler-223 planetary system
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b——7.3845——3  R🜨
c——9.8456——3.4  R🜨
d——14.7887——5.2  R🜨
e——19.7257——4.6  R🜨

The confirmed planetary system was first detected by the Kepler mission, and contains four planets. [6] This system was initially believed to contain two co-orbital planets orbiting the star at approximately the same orbital distance every 9.8 days, with one permanently locked 60° behind the other in one of the two Trojan Lagrangian points. [7] The two co-orbital planets were thought to be locked in mean motion resonances with the other two planets, creating an overall 6:4:4:3 resonance. [8] This would have been the first known example of co-orbital planets.

However, follow-up study of the system revealed that an alternative configuration, with the four planets having orbital periods in the ratio 8:6:4:3 is better supported by the data. This configuration does not contain co-orbital planets, [9] and has been confirmed by further observations. [3] It represents the first confirmed 4-body orbital resonance. [6]

The radii are 3.0, 3.4, 5.2, and 4.6 Earth radii, and the orbital periods are 7.3845, 9.8456, 14.7887 and 19.7257 days, respectively. [3]

References

  1. 1 2 3 4 5
  2. 1 2 3 4 5 6 7 8 9 10 11 12 13 "KIC10 Search". Multimission Archive at STScI. 8 October 2009. Retrieved 5 March 2011.
  3. 1 2 3 4 Mills, S. M.; Fabrycky, D. C.; Migaszewski, C.; Ford, E. B.; Petigura, E.; Isaacson, H. (11 May 2016). "A resonant chain of four transiting, sub-Neptune planets". Nature. 533 (7604): 509–512. arXiv: 1612.07376 . Bibcode:2016Natur.533..509M. doi:10.1038/nature17445. PMID   27225123. S2CID   205248546.
  4. ↑
  5. ↑ Borucki, William J.; Koch, David G.; Basri, Gibor; Batalha, Natalie; Brown, Timothy M.; Bryson, Stephen T.; Caldwell, Douglas; Christensen-Dalsgaard, Jørgen; Cochran, William D.; Devore, Edna; Dunham, Edward W.; Gautier, Thomas N.; Geary, John C.; Gilliland, Ronald; Gould, Alan; Howell, Steve B.; Jenkins, Jon M.; Latham, David W.; Lissauer, Jack J.; Marcy, Geoffrey W.; Rowe, Jason; Sasselov, Dimitar; Boss, Alan; Charbonneau, David; Ciardi, David; Doyle, Laurance; Dupree, Andrea K.; Ford, Eric B.; Fortney, Jonathan; et al. (2011). "Characteristics of planetary candidates observed by Kepler, II: Analysis of the first four months of data". The Astrophysical Journal . 736 (1): 19. arXiv: 1102.0541 . Bibcode:2011ApJ...736...19B. doi:10.1088/0004-637X/736/1/19. S2CID   15233153.
  6. 1 2 Koppes, S. (17 May 2016). "Kepler-223 System: Clues to Planetary Migration". Jet Propulsion Lab . Retrieved 18 May 2016.
  7. ↑ Chown, Marcus (28 February 2011). "Two planets found sharing one orbit". New Scientist.
  8. ↑ Emspak, Jesse (2 March 2011). "Kepler Finds Bizarre Systems". International Business Times. International Business Times Inc.
  9. ↑ Beatty, Kelly (5 March 2011). "Kepler Finds Planets in Tight Dance". Sky and Telescope.
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