Kepler-1658

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Kepler-1658 is an F-type star located in the constellation Cygnus, [1] approximately 2,629 light-years (806 parsecs ) away. [2] . It has 1.45 times the solar mass and 2.89 times the solar radius. [2] According to a study in 2025, it might have two stellar companions. [3]

Search for planets

In 2009, a hot Jupiter planet candidate (KOI-4.01) was identified around Kepler-1658 by the Kepler space telescope via the transit method. Initially ruled out as a false alarm, the existence of the planet was established in 2019 (Kepler-1658b). [4] [5] Analysis of the Transiting Exoplanet Survey Satellite (TESS) data in 2022 showed that it is gradually spiraling into its star, with its orbit decaying. [6] However, based on the relevant data, in 2025 it was demonstrated that Kepler-1658b is very likely a false positive system. [3] In reality, all the data that supported the detection of a planet with physical orbital decay could just as well be explained via the assertion of the system as a triple star system, where the primary observed star has a companion system that consists of an eclipsing binary with a period of 3.8 days. This explanation can thoroughly account for all the system discrepancies when asserting a planet while providing a consistent explanation for all historical data.

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific . 99 (617): 695. Bibcode:1987PASP...99..695R. doi: 10.1086/132034 . Constellation record for this object at VizieR .
  2. 1 2 "Star Kepler-1658". stellarcatalog.
  3. 1 2 https://arxiv.org/abs/2510.05229
  4. ↑ Strickland, Ashley (2019-03-06). "Kepler's first exoplanet has been confirmed, 10 years after discovery". CNN. Retrieved 2022-12-20.
  5. ↑ Chontos, Ashley; Huber, Daniel; Latham, David W.; Bieryla, Allyson; Eylen, Vincent Van; Bedding, Timothy R.; Berger, Travis; Buchhave, Lars A.; Campante, Tiago L.; Chaplin, William J.; Colman, Isabel L.; Coughlin, Jeff L.; Davies, Guy; Hirano, Teruyuki; Howard, Andrew W. (2019). "The Curious Case of KOI 4: Confirming Kepler ' s First Exoplanet Detection". The Astronomical Journal. 157 (5): 192. arXiv: 1903.01591 . Bibcode:2019AJ....157..192C. doi: 10.3847/1538-3881/ab0e8e . ISSN   1538-3881. S2CID   119240124.
  6. ↑ Vissapragada, Shreyas; Chontos, Ashley; Greklek-McKeon, Michael; Knutson, Heather A.; Dai, Fei; González, Jorge Pérez; Grunblatt, Sam; Huber, Daniel; Saunders, Nicholas (2022). "The Possible Tidal Demise of Kepler's First Planetary System". The Astrophysical Journal Letters. 941 (2): L31. arXiv: 2212.09752 . Bibcode:2022ApJ...941L..31V. doi: 10.3847/2041-8213/aca47e . ISSN   2041-8205. S2CID   254875671.
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