TOI-6883

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TOI-6883
Delphinus constellation map.svg
Red circle.svg
Location of TOI-6883AB (circled)
Observation data
Epoch J2000.0        Equinox J2000.0
Constellation Delphinus [1]
A
Right ascension 20h 41m 10.067s [2]
Declination +03° 38′ 19.25″ [2]
Apparent magnitude  (V)9.48 [3]
B
Right ascension 20h 41m 10.300s [4]
Declination +03° 38′ 24.88″ [4]
Characteristics
Evolutionary stage Main sequence
Spectral type G
Astrometry
A
Proper motion (μ)RA: -56.677 mas/yr [2]
Dec.: -89.096 mas/yr [2]
Parallax (π)10.6121±0.0154  mas [2]
Distance 307.3 ± 0.4  ly
(94.2 ± 0.1  pc)
B
Proper motion (μ)RA: -53.136 mas/yr [4]
Dec.: -101.579 mas/yr [4]
Parallax (π)11.8192 ± 0.1557  mas [4]
Distance 276 ± 4  ly
(85 ± 1  pc)
Details [5]
A
Mass 1.082+0.055
−0.056  M☉
Radius 1.086±0.020  R☉
Luminosity 1.168+0.065
−0.063  L☉
Surface gravity (log g)4.402+0.013
−0.018  cgs
Temperature 5756+67
−66  K
Metallicity [Fe/H]0.318±0.058  dex
Age 3.8+2.6
−2.1  Gyr
Other designations
BD+03 4397, TOI-6883
A: TIC 393818343
B: TIC 393818340 [6]
Database references
SIMBAD A
B
Exoplanet Archive data

TOI-6883 is a wide visual binary star system located in the constellation of Delphinus, at a distance of approximately 94 parsecs (307 light-years) from Earth. It is composed of two sol-like stars, TOI-6883A and TOI-6883B, separated by approximately 6.5 arcseconds, corresponding to ~616 astronomical units (AU).

Contents

Characteristics

Both stars are classified as G-type main-sequence stars with masses and radii similar to that of the Sun. According to Conzo et al. 2025, [6] data from the Gaia mission (DR3) show:

These properties strongly support the idea that the two stars form a gravitationally-bound and dynamically stable binary system. [6]

However, the Gaia DR3 parallaxes and proper motions shown in VizieR differ from those reported by Conzo et al., and may suggest the two stars are at different distances. [4]

Planet TOI-6883Ab

The TOI-6883 system appears to have at least one planet: TOI-6883Ab is a warm Jupiter-type exoplanet orbiting the primary star TOI-6883A with a period of about 16.25 days. The planet was first detected via transit by the Transiting Exoplanet Survey Satellite (TESS) and later confirmed by ground-based photometric observations. Following the confirmation of the binary nature of the host star, the planet’s designation was updated from TOI-6883b to TOI-6883Ab in accordance with IAU naming conventions for multiple stellar systems. [6]

With a radius of ~1.1 Jupiter radii, the planet produces a transit depth of about 1.3%. The presence of the secondary star TOI-6883B may influence the planet’s long-term orbital evolution via dynamical mechanisms such as Kozai–Lidov oscillations.

The TOI-6883A planetary system [5]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 4.34±0.15  MJ 0.1291+0.0021
−0.0022		16.24921+0.00010
−0.00011		0.6058±0.002389.57+0.30
−0.38 ° 		1.087+0.023
−0.021  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 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. ↑ Høg, E.; Fabricius, C.; et al. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics . 355: L27 –L30. Bibcode:2000A&A...355L..27H.
  4. 1 2 3 4 5 6 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.
  5. 1 2 Sgro, Lauren A.; Dalba, Paul A.; et al. (July 2024). "Confirmation and Characterization of the Eccentric, Warm Jupiter TIC 393818343 b with a Network of Citizen Scientists". The Astronomical Journal . 168 (1): 26. arXiv: 2405.15021 . Bibcode:2024AJ....168...26S. doi: 10.3847/1538-3881/ad5096 .
  6. 1 2 3 4 Conzo, G.; Campos, F.; Conti, F.; Sharp, I. (June 2025). "Characterization of the Visual Binary TOI-6883AB and its Dynamical Implications for the Planetary Companion TOI-6883Ab". Research Notes of the AAS . 9 (6): 139. arXiv: 2506.08798 . doi: 10.3847/2515-5172/ade25d .
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