List of smallest exoplanets
Below is a list of the smallest exoplanets so far discovered, in terms of physical size, ordered by radius. Some of these are unconfirmed and/or controversial.
List
The sizes are listed in units of Earth radii (R🜨).[1] All planets listed are smaller than Earth and being up to 0.7 Earth radii.
 |
| Exoplanet | Radius (R🜨) (Earth = 1) |
Notes |
|---|---|---|
| SDSS J1228+1040 b (SDSS J122859.92+104033.0 b, WD 1226+110 b) |
0.01008824?[2] | Remnant Iron core. |
| PSR B1828-11 b | 0.016[3] | Unconfirmed, controversial |
| KOI-115.03 (Kepler-105 d) | 0.0258±0.0015[4] | Unconfirmed, controversial |
| 1 Ceres | 0.074662903 | Shown for comparison |
| WD 1145+017 b | ~0.15[5] | Controversial, Possibly least massive exoplanet. |
| 134340 Pluto | 0.182580746 | Shown for comparison |
| Moon | 0.273925995 | Shown for comparison |
| Kepler-37 b | 0.3[6] | Provisionally smallest exoplanet. |
| PSR B1257+12 b | 0.338?[7] | Least massive exoplanet, at 0.02 Earth masses. |
| Mercury | 0.38251803 | Shown for comparison |
| Kepler-444 b | 0.403[8] | |
| Kepler-102 b | 0.47 | |
| Kepler-444 c | 0.497[8] | |
| Kepler-1308 b | 0.5 | |
| Kepler-138 b | 0.52 | |
| Kepler-444 d | 0.53[8] | |
| Mars | 0.531436186 | Shown for comparison |
| Kepler-62 c | 0.54 | |
| Kepler-444 e | 0.546[8] | |
| Kepler-42 d | 0.57 | |
| Kepler-102 c | 0.58 | |
| KOI-1843.03 | 0.59 | |
| Kepler-1087 b | 0.59 | |
| Kepler-1583 b | 0.59 | |
| K2-89 b | 0.617 | |
| Kepler-1371 c | 0.63 | |
| UCF-1.02 | 0.64 | Unconfirmed, controversial |
| Kepler-1542 c | 0.64 | |
| Kepler-1351 b | 0.64 | |
| UCF-1.01 | 0.65 | Unconfirmed, controversial |
| Kepler-271 d | 0.65 | |
| Kepler-431 c | 0.654 | |
| Kepler-1558 b | 0.67 | |
| Kepler-1349 b | 0.68 | |
| Kepler-141 b | 0.69 | |
| Kepler-1339 b | 0.69 | |
| Kepler-378 c | 0.7 |
See also
References
- ^ Staff (10 July 2017). "Exoplanet Catalog". Extrasolar Planets Encyclopaedia. Retrieved 10 July 2017.
- ^ "Planet SDSS J1228+1040 b". http://exoplanet.eu. Retrieved 2019-08-05.
{{cite web}}: External link in|website= - ^ "The Extrasolar Planet Encyclopaedia — Catalog Listing". exoplanet.eu. Retrieved 2019-12-29.
- ^ "Open Exoplanet Catalogue - KOI-115.03". openexoplanetcatalogue.com. Retrieved 2019-08-05.
- ^ Vanderburg, Andrew; John Asher Johnson; Rappaport, Saul; Bieryla, Allyson; Irwin, Jonathan; John Arban Lewis; Kipping, David; Brown, Warren R.; Dufour, Patrick; Ciardi, David R.; Angus, Ruth; Schaefer, Laura; Latham, David W.; Charbonneau, David; Beichman, Charles; Eastman, Jason; McCrady, Nate; Wittenmyer, Robert A.; Wright, Jason T. (2015). "A disintegrating minor planet transiting a white dwarf". Nature. 526 (7574): 546–549. arXiv:1510.06387. Bibcode:2015Natur.526..546V. doi:10.1038/nature15527. PMID 26490620.
- ^ Simukoff, E.; et al. (2013). "Below One Earth Mass: The Detection, Formation, and Properties of Subterrestrial Worlds". arXiv:1308.6308. Bibcode:2013SSRv..180...71S. doi:10.1007/s11214-013-0019-1.
{{cite journal}}: Cite journal requires|journal=(help) - ^ [1]
- ^ a b c d Campante, T.; et al. (2015). "KOI-3158: The oldest known system of terrestrial-size planets". arXiv:1501.07869. Bibcode:2015EPJWC.10102004C. doi:10.1051/epjconf/201510102004.
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