2018年发现的系外行星列表

这是2018年发现的系外行星列表。 仅由径向速度发现的太陽系外行星，下列表格记载的质量为其下限。 NASA Exoplanet Archive. [20 December 2019]. （原始内容存档于2021-03-22）.  The Extrasolar Planets Encyclopaedia. [2015-11-09]. （原始内容存档于2012-07-05）.  Adams, Elisabeth R.; et al. Ultra Short Period Planets in K2 III: Neighbors are Common with 13 New Multi-Planet Systems and 10 Newly Validated Planets in Campaigns 0-8, 10. 2020. arXiv:2011.11698  [astro-ph.EP].  Adams, Elisabeth R.; et al. Ultra Short Period Planets in K2 III: Neighbors are Common with 13 New Multi-Planet Systems and 10 Newly Validated Planets in Campaigns 0-8, 10. 2020. arXiv:2011.11698  [astro-ph.EP].  Nowak, Grzegorz; et al. K2-280 b – a low density warm sub-Saturn around a mildly evolved star. Monthly Notices of the Royal Astronomical Society. 2020, 497 (4): 4423–4435. arXiv:2007.07939 . doi:10.1093/mnras/staa2077.  Livingston, John H.; et al. Sixty Validated Planets from K2 Campaigns 5–8. The Astronomical Journal. 2018, 156 (6): 277. Bibcode:2018AJ....156..277L. S2CID 119387939. arXiv:1810.04074 . doi:10.3847/1538-3881/aae778.  Petigura, Erik A.; et al. Planet Candidates from K2 Campaigns 5–8 and Follow-up Optical Spectroscopy. The Astronomical Journal. 2017, 155: 21. S2CID 55674757. arXiv:1711.06377 . doi:10.3847/1538-3881/aa9b83.  Mayo, Andrew W.; et al. 275 Candidates and 149 Validated Planets Orbiting Bright Stars inK2 Campaigns 0–10. The Astronomical Journal. 2018, 155 (3): 136. Bibcode:2018AJ....155..136M. S2CID 85524387. arXiv:1802.05277 . doi:10.3847/1538-3881/aaadff.  NASA. Discovery alert! An Earth that looks like Neptune. Exoplanet Exploration: Planets Beyond our Solar System. [2021-01-15]. （原始内容存档于2021-05-07）.  Udalski, A.; et al. OGLE-2017-BLG-1434Lb: Eighth q<1×10-4 Mass-Ratio Microlens Planet Confirms Turnover in Planet Mass-Ratio Function. Acta Astronomica. 2018, 68 (1): 1. Bibcode:2018AcA....68....1U. S2CID 119011208. arXiv:1802.02582 . doi:10.32023/0001-5237/68.1.1.  Blackman, J. W.; Beaulieu, J.-P.; Cole, A. A.; Koshimoto, N.; Vandorou, A.; Bhattacharya, A.; Marquette, J.-B.; Bennett, D. P. OGLE-2017-BLG-1434Lb: Confirmation of a Cold Super-Earth Using Keck Adaptive Optics. The Astronomical Journal. 2021, 161 (6): 279. Bibcode:2021AJ....161..279B. arXiv:2107.06510 . doi:10.3847/1538-3881/abfda3.  Anderson, D. R.; et al. The discovery of WASP-134b, WASP-134c, WASP-137b, WASP-143b and WASP-146b: three hot Jupiters and a pair of warm Jupiters orbiting Solar-type stars. 2018. arXiv:1812.09264  [astro-ph.EP].  Hellier, Coel; et al. New transiting hot Jupiters discovered by WASP-South, Euler/CORALIE, and TRAPPIST-South. Monthly Notices of the Royal Astronomical Society. 2019, 482: 1379–1391. arXiv:1803.02224 . doi:10.1093/mnras/sty2741.  Lendl, M.; et al. WASP-147b, 160Bb, 164b, and 165b: Two hot Saturns and two Jupiters, including two planets with metal-rich hosts. Monthly Notices of the Royal Astronomical Society. 2019, 482: 301–312. arXiv:1807.06973 . doi:10.1093/mnras/sty2667.  Peterson, Merrin S.; et al. A 2 R ⊕ Planet Orbiting the Bright Nearby K Dwarf Wolf 503. The Astronomical Journal. 2018, 156 (5): 188. Bibcode:2018AJ....156..188P. S2CID 54872200. arXiv:1806.03494 . doi:10.3847/1538-3881/aaddfe.  Polanski, Alex S.; et al. Wolf 503 b: Characterization of a Sub-Neptune Orbiting a Metal-Poor K Dwarf. 2021. arXiv:2107.08092  [astro-ph.EP].