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
Right ascension  20h 20m 53.2484s[1]
Declination +59° 26′ 55.574″[1]
Apparent magnitude (V) 13.58
Characteristics
Spectral type G/K[2]
Apparent magnitude (J) 12.111±0.027[3]
Apparent magnitude (H) 11.673±0.023[3]
Apparent magnitude (K) 11.591±0.019[3]
Astrometry
Proper motion (μ) RA: 9.112[1] mas/yr
Dec.: 30.790[1] mas/yr
Parallax (π)2.7465 ± 0.0146[4] mas
Distance1,188 ± 6 ly
(364 ± 2 pc)
Details[5][6][2]
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
Gaia DR2 2188601779406152448, GSC 03949-00967, 2MASS J20205324+5926556, TrES-5 parent star[1]
Database references
SIMBADdata

GSC 03949-00967 is a G-type main-sequence star about 1190 light-years away. It is older than the Sun, yet is enriched by heavy elements compared to the Sun, having 160% of solar abundance.[5]

Planetary system

TrES-5b

In 2011 a transiting hot Jupiter planet TrES-5b was detected.[5] The host star was one of the faintest stars to which a planetary companion was detected by the transit method at the time of discovery.[2] The planet’s equilibrium temperature is 1480±24 K.[6]

TrES-5c/TrES-5B

An additional planet on a 4-day orbit in the system was suspected since 2018,[7] but refuted in 2021. Another object on a wide orbit, either star or planet, is still suspected.[8]

The GSC 03949-00967 planetary system[7]
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. ↑ 1.0 1.1 1.2 1.3 1.4 "GSC 03949-00967". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GSC+03949-00967. 
  2. ↑ 2.0 2.1 2.2 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 
  3. ↑ 3.0 3.1 3.2 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
  4. ↑ Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  5. ↑ 5.0 5.1 5.2 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 
  6. ↑ 6.0 6.1 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 
  7. ↑ 7.0 7.1 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 
  8. ↑ 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. 

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




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