GSC 02652-01324
| 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]
There is a small, cool companion star at a separation of 13.2 arcseconds, corresponding to 2111 AU.[11]
Nomenclature
[edit]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
[edit]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]
| 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] | <0.012 | 90.0+0.0 −1.1° |
1.067+0.022 −0.021 RJ |
See also
[edit]References
[edit]- ^ 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.
- ^ a b 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
- ^ a b c d e f 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.
- ^ a b 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
- ^ a b c d e 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.
- ^ a b c 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
- ^ a b "V672 Lyr". General Catalog of Variable Stars - VizieR. Retrieved 10 March 2025.
- ^ a b 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.
- ^ a b 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.
- ^ a b "TrES-1 Parent Star". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-02-01.
- ^ 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.
- ^ "TrES-1 Overview". NASA Exoplanet Archive. Retrieved 10 March 2025.
- ^ 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.
- ^ a b c 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
- ^ "Keck confirms transit planet" (Press release). Kamuela, Hawaii: W. M. Keck Observatory. August 24, 2004. Retrieved August 14, 2019.
External links
[edit]- "Planet TRES-1 b". Extrasolar Planets Encyclopaedia. Retrieved 2018-11-28.