WASP-19
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Vela[1] |
Right ascension | 09h 53m 40.0765s[2] |
Declination | −45° 39′ 33.056″[2] |
Apparent magnitude (V) | 12.312 ± 0.017[3] |
Characteristics | |
Spectral type | G8V |
Apparent magnitude (B) | 13.58 |
Apparent magnitude (R) | 12.17 |
Apparent magnitude (I) | 11.35 |
Apparent magnitude (J) | 10.911 ± 0.026[4] |
Apparent magnitude (H) | 10.602 ± 0.022[4] |
Apparent magnitude (K) | 10.481 ± 0.023[4] |
B−V color index | 1.3 |
V−R color index | 0.1 |
R−I color index | 0.82 |
Variable type | planetary transit |
Astrometry | |
Proper motion (μ) | RA: −35.407±0.041[2] mas/yr Dec.: 17.288±0.040[2] mas/yr |
Parallax (π) | 3.6981 ± 0.0236[2] mas |
Distance | 882 ± 6 ly (270 ± 2 pc) |
Absolute magnitude (MV) | 5.3 |
Details[5] | |
Mass | 0.97±0.02[6] M☉ |
Radius | 0.885+0.086 −0.084 R☉ |
Luminosity | 0.71 L☉ |
Surface gravity (log g) | 4.45 ± 0.05[7] cgs |
Temperature | 5568 ± 71[7] K |
Metallicity [Fe/H] | 0.15 ± 0.07[7] dex |
Rotation | 11.76±0.09 d |
Rotational velocity (v sin i) | 4.0 ± 1.0[7] km/s |
Age | 9.95±2.49 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Extrasolar Planets Encyclopaedia | data |
WASP-19 is a magnitude 12.3 star located in the Vela constellation of the southern hemisphere.[8] This star has been found to host a transiting hot Jupiter-type planet in tight orbit.
The WASP-19 is older than Sun, has fraction of heavy elements above solar abundance, and is rotating rapidly, being spun up by the tides raised by the giant planet on the close orbit.[5]
Planetary system[]
In December 2009 SuperWASP project announced that a hot Jupiter type extrasolar planet, WASP-19b, was orbiting very close to this star and with the shortest orbital period so far detected.[8]
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | 1.168±0.023 MJ | 0.01634 ± 0.00019 | 0.7888396 ± 0.00000010 | 0 | 78.76 ± 0.13° | 1.18±0.12 RJ |
See also[]
- List of extrasolar planets
References[]
- ^ 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 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ Maxted, P. F. L.; et al. (2011). "UBV(RI)C photometry of transiting planet hosting stars". Monthly Notices of the Royal Astronomical Society. 418 (2): 1039–1042. arXiv:1108.0349. Bibcode:2011MNRAS.418.1039M. doi:10.1111/j.1365-2966.2011.19554.x. S2CID 117056033.
- ^ 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: 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Vizier catalog entry
- ^ a b Maxted, P. F. L.; Serenelli, A. M.; Southworth, J. (2015), "A comparison of gyrochronological and isochronal age estimates for transiting exoplanet host stars", Astronomy & Astrophysics, 577: A90, arXiv:1503.09111, doi:10.1051/0004-6361/201525774, S2CID 53324330
- ^ a b Dragomir, Diana; Kane, Stephen R.; Pilyavsky, Genady; Mahadevan, Suvrath; Ciardi, David R.; Zachary Gazak, J.; Gelino, Dawn M.; Payne, Alan; Rabus, Markus; Ramirez, Solange V.; von Braun, Kaspar; Wright, Jason T.; Wyatt, Pamela (2011). "Terms Photometry of Known Transiting Exoplanets". The Astronomical Journal. 142 (4): 115. arXiv:1108.2308. Bibcode:2011AJ....142..115D. doi:10.1088/0004-6256/142/4/115. S2CID 118606598.
- ^ a b c d Torres, Guillermo; et al. (2012). "Improved Spectroscopic Parameters for Transiting Planet Hosts". The Astrophysical Journal. 757 (2). 161. arXiv:1208.1268. Bibcode:2012ApJ...757..161T. doi:10.1088/0004-637X/757/2/161. S2CID 16580774.
- ^ a b Hebb, L.; et al. (2010). "WASP-19b: The Shortest Period Transiting Exoplanet Yet Discovered". The Astrophysical Journal. 708 (1): 224–231. arXiv:1001.0403. Bibcode:2010ApJ...708..224H. doi:10.1088/0004-637X/708/1/224. S2CID 119189785.
- ^ Mancini, L.; et al. (2013). "Physical properties, transmission and emission spectra of the WASP-19 planetary system from multi-colour photometry". Monthly Notices of the Royal Astronomical Society. 436 (1): 2–18. arXiv:1306.6384. Bibcode:2013MNRAS.436....2M. doi:10.1093/mnras/stt1394. S2CID 55455709.
Coordinates: 09h 53m 40.07s, −45° 39′ 33.06″
Categories:
- G-type main-sequence stars
- Vela (constellation)
- Planetary systems with one confirmed planet
- Planetary transit variables
- 2MASS objects
- Wide Angle Search for Planets
- Main-sequence-star stubs
- Exoplanet stubs