stringtranslate.com

List of smallest exoplanets

A size comparison of the planets in the Kepler-37 system and objects in the Solar System

Below is a list of the smallest exoplanets so far discovered, in terms of physical size, ordered by radius.

List

The sizes are listed in units of Earth radii (R🜨). All planets listed are smaller than Earth and Venus, up to 0.7 Earth radii. The NASA Exoplanet Archive is used as the main data source.[1][2]

Excluded objects

Kepler-37e is listed with a radius of 0.37±0.18 R🜨 in the Exoplanet Archive based on KOI data, but the existence of this planet is doubtful,[19] and assuming its existence, a 2023 study found a mass of 8.1±1.7 M🜨, inconsistent with such a small radius.[20]

KOI-6705.01, listed as a potential very small planet in the KOI dataset, was shown to be a false positive in 2016.[21]

Kepler and TESS candidates

Below shows a list of Kepler and TESS candidates below 0.7 R🜨 that have yet to be confirmed.

See also

References

  1. ^ Staff (10 July 2017). "Exoplanet Catalog". Extrasolar Planets Encyclopaedia. Retrieved 10 July 2017.
  2. ^ "Planetary Systems Composite Data". NASA Exoplanet Archive. Retrieved 16 July 2023.
  3. ^ a b Manser, Christopher J.; et al. (5 April 2019). "A planetesimal orbiting within the debris disc around a white dwarf star". Science. 364 (6435): 66–69. arXiv:1904.02163. Bibcode:2019Sci...364...66M. doi:10.1126/science.aat5330. ISSN 0036-8075. PMID 30948547. S2CID 96434522.
  4. ^ "Planet SDSS J1228+1040 b". Extrasolar Planets Encyclopaedia. Retrieved 2019-08-05.
  5. ^ a b Rappaport, S.; Gary, B. L. (June 2016). "Drifting asteroid fragments around WD 1145+017". Monthly Notices of the Royal Astronomical Society. 458 (4): 3904–3917. arXiv:1602.00740. Bibcode:2016MNRAS.458.3904R. doi:10.1093/mnras/stw612.
  6. ^ Simukoff, E.; et al. (2013). "Below One Earth Mass: The Detection, Formation, and Properties of Subterrestrial Worlds". Space Science Reviews. 180 (1–4): 71. arXiv:1308.6308. Bibcode:2013SSRv..180...71S. doi:10.1007/s11214-013-0019-1. S2CID 118597064.
  7. ^ a b c Bonomo, A. S.; Dumusque, X.; et al. (September 2023). "Cold Jupiters and improved masses in 38 Kepler and K2 small planet systems from 3661 HARPS-N radial velocities. No excess of cold Jupiters in small planet systems". Astronomy & Astrophysics. 677: A33. arXiv:2304.05773. Bibcode:2023A&A...677A..33B. doi:10.1051/0004-6361/202346211. S2CID 258078829.
  8. ^ "Exoplanet-catalog".
  9. ^ Ansdell, M.; Hirano, T.; Gaidos, E. (2019). "Monitoring of the D doublet of neutral sodium during transits of two 'evaporating' planets". Monthly Notices of the Royal Astronomical Society. 485 (3): 3876–3886. arXiv:1903.06217. Bibcode:2019MNRAS.485.3876G. doi:10.1093/mnras/stz693. [...]the radii are not known but are thought to be smaller than Mercury (0.36R⊕).
  10. ^ Garai, Z. (2018). "Light-curve analysis of KOI 2700b: The second extrasolar planet with a comet-like tail". Astronomy & Astrophysics. 611: A63. arXiv:1712.07461. Bibcode:2018A&A...611A..63G. doi:10.1051/0004-6361/201629676. S2CID 118885868. We confirmed the disintegrating-planet scenario of KOI 2700b.
  11. ^ a b c d Campante, T.; et al. (2015). "KOI-3158: The oldest known system of terrestrial-size planets". EPJ Web of Conferences. 101: 02004. arXiv:1501.07869. Bibcode:2015EPJWC.10102004C. doi:10.1051/epjconf/201510102004. S2CID 16191462.
  12. ^ Cañas, Caleb I.; Mahadevan, Suvrath; Cochran, William D.; Bender, Chad F.; Feigelson, Eric D.; Harman, C. E.; Kopparapu, Ravi Kumar; Caceres, Gabriel A.; Diddams, Scott A.; Endl, Michael; Ford, Eric B.; Halverson, Samuel; Hearty, Fred; Jones, Sinclaire; Kanodia, Shubham; Lin, Andrea S. J.; Metcalf, Andrew J.; Monson, Andrew; Ninan, Joe P.; Ramsey, Lawrence W.; Robertson, Paul; Roy, Arpita; Schwab, Christian; Stefánsson, Guđmundur (2022). "A Hot Mars-sized Exoplanet Transiting an M Dwarf". The Astronomical Journal. 163 (1): 3. arXiv:2112.03958. Bibcode:2022AJ....163....3C. doi:10.3847/1538-3881/ac3088. S2CID 244954104.
  13. ^ "Kepler-1994". NASA Exoplanet Archive. Retrieved 16 June 2023.
  14. ^ Tey, Evan; Shporer, Avi; et al. (May 2024). "GJ 238 b: A 0.57 Earth Radius Planet Orbiting an M2.5 Dwarf Star at 15.2 pc". The Astronomical Journal. 167 (6): 283. Bibcode:2024AJ....167..283T. doi:10.3847/1538-3881/ad3df1.
  15. ^ "Kepler-1998". NASA Exoplanet Archive. Retrieved 16 June 2023.
  16. ^ Piaulet, Caroline; Benneke, Björn; et al. (15 December 2022). "Evidence for the volatile-rich composition of a 1.5-Earth-radius planet". Nature Astronomy. 7: 206. arXiv:2212.08477. Bibcode:2023NatAs...7..206P. doi:10.1038/s41550-022-01835-4. S2CID 254764810.
  17. ^ Silverstein, Michele L.; Barclay, Thomas; et al. (May 2024). "Validation of a Third Planet in the LHS 1678 System". The Astronomical Journal. 167 (6): 255. arXiv:2403.00110. Bibcode:2024AJ....167..255S. doi:10.3847/1538-3881/ad3040.
  18. ^ Goffo, Elisa; Gandolfi, Davide; et al. (September 2023). "Company for the ultra-high density, ultra-short period sub-Earth GJ 367 b: discovery of two additional low-mass planets at 11.5 and 34 days". The Astrophysical Journal Letters. 955 (1): L3. arXiv:2307.09181. Bibcode:2023ApJ...955L...3G. doi:10.3847/2041-8213/ace0c7.
  19. ^ Rajpaul, V. M.; Buchhave, L. A.; Lacedelli, G.; Rice, K.; Mortier, A.; Malavolta, L.; Aigrain, S.; Borsato, L.; Mayo, A. W.; Charbonneau, D.; Damasso, M.; Dumusque, X.; Ghedina, A.; Latham, D. W.; López-Morales, M.; Magazzù, A.; Micela, G.; Molinari, E.; Pepe, F.; Piotto, G.; Poretti, E.; Rowther, S.; Sozzetti, A.; Udry, S.; Watson, C. A. (2021), "A HARPS-N mass for the elusive Kepler-37d: A case study in disentangling stellar activity and planetary signals", Monthly Notices of the Royal Astronomical Society, 507 (2): 1847–1868, arXiv:2107.13900, Bibcode:2021MNRAS.507.1847R, doi:10.1093/mnras/stab2192
  20. ^ Weiss, Lauren M.; et al. (2024-01-01). "The Kepler Giant Planet Search. I. A Decade of Kepler Planet-host Radial Velocities from W. M. Keck Observatory". The Astrophysical Journal Supplement Series. 270 (1) 8. arXiv:2304.00071. Bibcode:2024ApJS..270....8W. doi:10.3847/1538-4365/ad0cab.
  21. ^ Gaidos, Eric; Mann, Andrew W.; Ansdell, Megan (January 2016). "The Enigmatic and Ephemeral M Dwarf System KOI 6705: Cheshire Cat or Wild Goose?". The Astrophysical Journal. 817 (1): 50. arXiv:1511.06471. Bibcode:2016ApJ...817...50G. doi:10.3847/0004-637X/817/1/50.
  22. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc bd be bf bg bh bi bj bk bl bm bn bo bp bq br bs bt bu bv bw bx by bz ca cb cc cd ce cf cg "NASA Exoplanet Archive". NASA Exoplanet Archive. Retrieved 16 June 2023.
  23. ^ Roche, Jakob (2024-06-07). "The Detection of KIC 1718360, A Rotating Variable with a Possible Companion, Using Machine Learning". arXiv:2405.05282 [astro-ph.EP].
  24. ^ "Kepler-105". NASA Exoplanet Archive. Retrieved 12 December 2021.
  25. ^ "NASA Exoplanet Archive". NASA Exoplanet Archive. Retrieved 16 June 2023.
  26. ^ Price, Ellen M.; Rogers, Leslie A. (May 2020). "Tidally Distorted, Iron-enhanced Exoplanets Closely Orbiting Their Stars". The Astrophysical Journal. 894 (1): 8. arXiv:1901.10666. Bibcode:2020ApJ...894....8P. doi:10.3847/1538-4357/ab7c67.