Astronomy:GSC 03949-00967

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Short description: Star in the constellation Cygnus
GSC 03949-00967
Observation data
Equinox J2000.0]] (ICRS)
Constellation Cygnus[1]
Right ascension  20h 20m 53.2482s[2]
Declination +59° 26′ 55.575″[2]
Apparent magnitude (V) 13.72[3]
Characteristics
Evolutionary stage main sequence[3]
Spectral type G/K[4]
Apparent magnitude (J) 12.111±0.027[5]
Apparent magnitude (H) 11.673±0.023[5]
Apparent magnitude (K) 11.591±0.019[5]
Astrometry
Radial velocity (Rv)−13.88±1.41[2] km/s
Proper motion (μ) RA: 9.198(14)[2] mas/yr
Dec.: 30.739(13)[2] mas/yr
Parallax (π)2.7654 ± 0.0115[2] mas
Distance1,179 ± 5 ly
(362 ± 2 pc)
Details[6][7][4]
Mass0.901±0.029 M☉
Radius0.851+0.014−0.013 R☉
Surface gravity (log g)4.517±0.012 cgs
Temperature5171±36 K
Metallicity [Fe/H]0.20±0.8 dex
Rotational velocity (v sin i)3.80±0.36 km/s
Age7.38±1.87 Gyr
Other designations
TrES-5 Parent Star, GSC 03949-00967, 2MASS J20205324+5926556[8]
Database references
SIMBADdata
Exoplanet Archivedata

GSC 03949-00967 is a G-type main-sequence star about 1179 light-years away in the constellation Cygnus. It is older than the Sun, yet is enriched in heavy elements compared to the Sun, having 160% of the solar abundance. It hosts one known exoplanet, TrES-5b.[6]

Nomenclature

The designation GSC 03949-00967 comes from the Guide Star Catalog.

The star is sometimes called TrES-5,[9] in reference to its planet discovered by the Trans-Atlantic Exoplanet Survey (TrES). The discovery paper[6] and the SIMBAD database[8] use this designation for the planet itself, but other sources call the star TrES-5 and the planet TrES-5b,[7][10] following the standard exoplanet naming convention.

Planetary system

In 2011, a transiting hot Jupiter planet, TrES-5b, was detected by the Trans-Atlantic Exoplanet Survey.[6] The host star was one of the faintest stars to host a planetary companion detected by the transit method at the time of discovery.[4] The planet’s equilibrium temperature is 1480±24 K.[7]

An additional planet on a 4-day orbit in the system was suspected since 2018 based on transit-timing variations,[10] but refuted in 2021. A different object on a wide orbit, either star or planet, is still suspected.[3]

The GSC 03949-00967 planetary system[10]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b 1.784±0.066 MJ 0.02447±0.00021 1.482247063±0.0000005 0.017±0.012 84.529±0.005° 1.209±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. doi:10.1086/132034. Bibcode: 1987PASP...99..695R  Constellation record for this object at VizieR.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  3. ↑ 3.0 3.1 3.2 Maciejewski, G. et al. (December 2021). "Revisiting TrES-5 b: departure from a linear ephemeris instead of short-period transit timing variation". Astronomy & Astrophysics 656: A88. doi:10.1051/0004-6361/202142424. Bibcode: 2021A&A...656A..88M. 
  4. ↑ 4.0 4.1 4.2 Maciejewski, G.; Dimitrov, D.; Mancini, L.; Southworth, J.; Ciceri, S.; D'Ago, G.; Bruni, I.; Raetz, St. et al. (2016). "New Transit Observations for HAT-P-30 b, HAT-P-37 b, TrES-5 b, WASP-28 b, WASP-36 b and WASP-39 b". Acta Astronomica 66 (1): 55. Bibcode: 2016AcA....66...55M. 
  5. ↑ 5.0 5.1 5.2 Skrutskie, Michael F. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. Bibcode: 2006AJ....131.1163S.  Vizier catalog entry
  6. ↑ 6.0 6.1 6.2 6.3 Mandushev, Georgi; Quinn, Samuel N.; Buchhave, Lars A.; Dunham, Edward W.; Rabus, Markus; Oetiker, Brian; Latham, David W.; Charbonneau, David et al. (2011). "TrES-5: A Massive Jupiter-sized Planet Transiting A Cool G-dwarf". The Astrophysical Journal 741 (2): 114. doi:10.1088/0004-637X/741/2/114. Bibcode: 2011ApJ...741..114M. 
  7. ↑ 7.0 7.1 7.2 Mislis, D.; Mancini, L.; Tregloan-Reed, J.; Ciceri, S.; Southworth, J.; d'Ago, G.; Bruni, I.; Baştürk, Ö. et al. (2015). "High-precision multiband time series photometry of exoplanets Qatar-1b and TrES-5b". Monthly Notices of the Royal Astronomical Society 448 (3): 2617–2623. doi:10.1093/mnras/stv197. Bibcode: 2015MNRAS.448.2617M. 
  8. ↑ 8.0 8.1 "GSC 03949-00967". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GSC+03949-00967. 
  9. ↑ "TrES-5 Overview". NASA Exoplanet Archive. https://exoplanetarchive.ipac.caltech.edu/overview/TrES-5. 
  10. ↑ 10.0 10.1 10.2 Sokov, Eugene N.; Sokova, Iraida A.; Dyachenko, Vladimir V.; Rastegaev, Denis A.; Burdanov, Artem; Rusov, Sergey A.; Benni, Paul; Shadick, Stan et al. (2018). "Transit timing analysis of the exoplanet TrES-5 b. Possible existence of the exoplanet TrES-5 c". Monthly Notices of the Royal Astronomical Society 480 (1): 291–301. doi:10.1093/mnras/sty1615. Bibcode: 2018MNRAS.480..291S. 

Coordinates: Sky map 20h 20m 53.2484s, +59° 26′ 55.5745″



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