GSC 02652-01324

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GSC 02652-01324
V672LyrLightCurve.png
A light curve showing the planet transit across V672 Lyrae, adapted from Winn et al. (2007) [1]
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Lyra [2]
Right ascension 19h 04m 09.8516s [3]
Declination +36° 37′ 57.447″ [3]
Apparent magnitude  (V)+11.806 [4]
Characteristics
Spectral type K0V [5]
Apparent magnitude  (B)12.405±0.005 [4]
Apparent magnitude  (J)10.294±0.022 [6]
Apparent magnitude  (H)9.887±0.021 [6]
Apparent magnitude  (K)9.819±0.019 [6]
Variable type Planetary transit [5] [7]
Astrometry
Radial velocity (Rv)−20.54±0.40 [3] km/s
Proper motion (μ)RA: −32.168(12) mas/yr [3]
Dec.: −20.463(13) mas/yr [3]
Parallax (π)6.2648±0.0111  mas [3]
Distance 520.6 ± 0.9  ly
(159.6 ± 0.3  pc)
Absolute magnitude  (MV)+5.847+0.097
−0.095 [8]
Details [8]
Mass 0.878+0.038
−0.040  M☉
Radius 0.807+0.017
−0.016  R☉
Luminosity 0.438+0.035
−0.033  L☉
Surface gravity (log g)4.567+0.012
−0.015  cgs
Temperature 5230±50  K
Metallicity [Fe/H]+0.02±0.05  dex
Rotational velocity (v sin i)1.30±0.30 [9]  km/s
Age 3.7+3.4
−2.8  Gyr
Other designations
TrES-1 Parent Star, V672 Lyr , KIC 875283, TOI-1236, TIC 120757718, TYC 2652-1324-1, GSC 02652-01324, 2MASS J19040985+3637574 [10]
Database references
SIMBAD data
Exoplanet Archive data

GSC 02652-01324, also known as V672 Lyrae, is an orange dwarf main sequence star approximately 521 light-years away in the constellation of Lyra (the Lyre). [2] [3] It hosts one known exoplanet, TrES-1b. [5]

Contents

There is a small, cool companion star at a separation of 13.2 arcseconds, corresponding to 2111 AU. [11]

Nomenclature

The designation GSC 02652-01324 comes from the Guide Star Catalog.

The star is sometimes called TrES-1, [12] in reference to its planet discovered by the Trans-Atlantic Exoplanet Survey (TrES). The discovery paper [5] and the SIMBAD database [10] use this designation for the planet itself, but other sources call the star TrES-1 [13] and the planet TrES-1b, [14] following the standard exoplanet naming convention.

Since the planet transits the star, the star is classified as a planetary transit variable and has received the variable star designation V672 Lyrae. The transits last a little over an hour, about 4% of the orbital period, and the brightness diminishes by a few hundredths of a magnitude. [7]

Planetary system

In 2004, the exoplanet TrES-1b was found to be orbiting this star by the Trans-Atlantic Exoplanet Survey using the transit method. The planet was detected crossing its parent star using a small 4-inch-diameter (100 mm) telescope. The discovery was confirmed by the Keck Observatory using the radial velocity method, allowing its mass to be determined. [5] [15] The planet is a hot Jupiter, with a mass and size similar to those of Jupiter but an orbital period of only three days.

Additional planets in the system are suspected due to transit-timing variations of TrES-1b. [14]

The GSC 02652-01324 planetary system [9]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 0.697+0.028
−0.027  MJ 		0.03926+0.00058
−0.00060		3.0300689(7) [14] <0.01290.0+0.0
−1.1 ° 		1.067+0.022
−0.021  RJ

See also

References

  1. ↑ Winn, Joshua N.; Holman, Matthew J.; Roussanova, Anna (10 March 2007). "The Transit Light Curve Project. III. Tres Transits of TrES-1". The Astrophysical Journal. 657 (2): 1098–1106. doi:10.1086/510834 . Retrieved 31 August 2024.
  2. 1 2 Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific. 99 (617): 695–699. Bibcode:1987PASP...99..695R. doi: 10.1086/132034 . Vizier query form
  3. 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.
  4. 1 2 Henden, A. A.; et al. (2016). "VizieR Online Data Catalog: AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016)". VizieR On-line Data Catalog: II/336. Originally Published in: 2015AAS...22533616H. 2336. Bibcode:2016yCat.2336....0H. Vizier catalog entry
  5. 1 2 3 4 5 Alonso, Roi; et al. (2004). "TrES-1: The Transiting Planet of a Bright K0V Star". The Astrophysical Journal Letters. 613 (2): L153 –L156. arXiv: astro-ph/0408421 . Bibcode:2004ApJ...613L.153A. doi:10.1086/425256. S2CID   8940599.
  6. 1 2 3 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi: 10.1086/498708 . ISSN   0004-6256. S2CID   18913331. Vizier catalog entry
  7. 1 2 "V672 Lyr". General Catalog of Variable Stars - VizieR . Retrieved 10 March 2025.
  8. 1 2 Torres, Guilermo; et al. (2008). "Improved Parameters for Extrasolar Transiting Planets". Astrophysical Journal. 677 (2): 1324–1342. arXiv: 0801.1841 . Bibcode:2008ApJ...677.1324T. doi:10.1086/529429. S2CID   12899134.
  9. 1 2 Bonomo, A. S.; et al. (2017). "The GAPS Programme with HARPS-N at TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy and Astrophysics. 602. A107. arXiv: 1704.00373 . Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. S2CID   118923163.
  10. 1 2 "TrES-1 Parent Star". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2018-02-01.
  11. ↑ Mugrauer, M. (December 2019). "Search for stellar companions of exoplanet host stars by exploring the second ESA-Gaia data release". Monthly Notices of the Royal Astronomical Society . 490 (4): 5088–5102. Bibcode:2019MNRAS.490.5088M. doi: 10.1093/mnras/stz2673 .
  12. ↑ "TrES-1 Overview". NASA Exoplanet Archive . Retrieved 10 March 2025.
  13. ↑ Baluev, Roman V.; et al. (2015). "Benchmarking the power of amateur observatories for TTV exoplanets detection". Monthly Notices of the Royal Astronomical Society. 450 (3): 3101–3113. arXiv: 1501.06748 . Bibcode:2015MNRAS.450.3101B. doi: 10.1093/mnras/stv788 . S2CID   15420110.
  14. 1 2 3 Yeung, Paige; Perian, Quinn; Robertson, Peyton; Fitzgerald, Michael; Fowler, Martin; Sienkiewicz, Frank; Tock, Kalee (2022), "Searching for Transit Timing Variations and Fitting a New Ephemeris to Transits of TrES-1 b", Journal of the Korean Astronomical Society, 55 (4): 111, arXiv: 2207.01559 , Bibcode:2022JKAS...55..111Y, doi:10.5303/JKAS.2022.55.4.111, S2CID   250264173
  15. ↑ "Keck confirms transit planet" (Press release). Kamuela, Hawaii: W. M. Keck Observatory. August 24, 2004. Retrieved August 14, 2019.
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