WASP-19

WASP-19 is a magnitude 12.3 star located in the Vela constellation of the southern hemisphere.[7] This star has been found to host a transiting hot Jupiter-type planet in tight orbit.

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
Distance882 ± 6 ly
(270 ± 2 pc)
Absolute magnitude (MV)5.3
Details
Mass0.97±0.02[5] M☉
Radius0.885+0.086
−0.084 R☉
Luminosity0.71 L☉
Surface gravity (log g)4.45 ± 0.05[6] cgs
Temperature5568 ± 71[6] K
Metallicity [Fe/H]0.15 ± 0.07[6] dex
Rotation10.5 ± 0.2 days[7]
Rotational velocity (v sin i)4.0 ± 1.0[6] km/s
Age600 Myr
Other designations
GSC 08181-01711, USNO-B1.0 0443-00193111, 2MASS J09534008-4539330
Database references
SIMBADdata
Extrasolar Planets
Encyclopaedia		data

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.[7]

The WASP-19 planetary system[8][5]
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
gollark: The trouble with this is that scaling it up like this requires ridiculous amounts of computing resources, and now it's so big that individuals probably can't even tractably run it.
gollark: It can add somewhat larger numbers!
gollark: https://slatestarcodex.com/2020/06/10/the-obligatory-gpt-3-post/
gollark: Apparently there's a GPT-3 now, and it's basically just a bigger GPT-2 which is somewhat more effective.
gollark: A supervolcano eruption would be *so* 2020.

See also
  • List of extrasolar planets

References
  1. 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
  2. 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.
  3. 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.
  4. Skrutskie, M. F.; et al. (2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708.Vizier catalog entry
  5. 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.
  6. 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.
  7. 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.
  8. 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.


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