TOI-1518

Last updated
TOI-1518
Observation data
Epoch J2000.0        Equinox J2000.0
Constellation Cepheus [1]
Right ascension 23h 29m 04.22518s [2]
Declination +67° 02′ 05.3786″ [2]
Apparent magnitude  (V)8.95 [3]
Characteristics
Evolutionary stage main sequence [2]
Spectral type F0 [4]
Astrometry
Radial velocity (Rv)−10.22±0.35 [2] km/s
Proper motion (μ)RA: −7.633 mas/yr [2]
Dec.: −4.948 mas/yr [2]
Parallax (π)4.3672±0.0141  mas [2]
Distance 747 ± 2  ly
(229.0 ± 0.7  pc)
Details [4]
Mass 1.79±0.26  M☉
Radius 1.950±0.048  R☉
Surface gravity (log g)4.1±0.2  cgs
Temperature 7300±100  K
Metallicity [Fe/H]−0.10±0.12  dex
Rotational velocity (v sin i)85.1±6.3 km/s
Other designations
AG+66 1198, BD+66 1610, SAO 20657, PPM 24491, TOI-1518, TIC 427761355, TYC 4292-873-1 [3]
Database references
SIMBAD data
Exoplanet Archive data

TOI-1518 is a F0-type main sequence star located in the Constellation of Cepheus around 747 light-years from Earth. [5]

Planetary system

TOI-1518b is the only known planet in the system. It is an ultra-hot Jupiter with iron in its atmosphere. The close orbit causes the radius of this planet to be inflated and heat to a temperature of 2492 K. [4]

The TOI-1518 planetary system [4]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b <2.3  MJ 0.0389±0.00111.902603(11)<0.0177.84+0.23
−0.26 ° 		1.875±0.053  RJ

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 3 4 5 6 7 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 "BD+66 1610". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 1 November 2025.
  4. 1 2 3 4 Cabot, Samuel H. C.; Bello-Arufe, Aaron; Mendonça, João M.; Tronsgaard, René; Wong, Ian; Zhou, George; Buchhave, Lars A.; Fischer, Debra A.; Stassun, Keivan G.; Antoci, Victoria; Baker, David; Belinski, Alexander A.; Benneke, Björn; Bouma, Luke G.; Christiansen, Jessie L. (2021-10-27). "TOI-1518b: A Misaligned Ultra-hot Jupiter with Iron in Its Atmosphere". The Astronomical Journal. 162 (5): 218. arXiv: 2108.11403 . Bibcode:2021AJ....162..218C. doi: 10.3847/1538-3881/ac1ba3 . ISSN   0004-6256.
  5. ↑ "TOI-1518 | NASA Exoplanet Archive". exoplanetarchive.ipac.caltech.edu. Retrieved 2025-10-31.
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