WASP-19

WASP-19 / Wattle
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Vela[1]
Right ascension 09h 53m 40.07656s[2]
Declination −45° 39′ 33.0572″[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
Radial velocity (Rv)21.41±0.95[2] km/s
Proper motion (μ) RA: −35.457 mas/yr[2]
Dec.: 17.378 mas/yr[2]
Parallax (π)3.7516 ± 0.0090 mas[2]
Distance869 ± 2 ly
(266.6 ± 0.6 pc)
Absolute magnitude (MV)5.3
Details[5]
Mass0.97±0.02[6] M☉
Radius0.885+0.086
−0.084 R☉
Luminosity0.71 L☉
Surface gravity (log g)4.45 ± 0.05[7] cgs
Temperature5568 ± 71[7] K
Metallicity [Fe/H]0.15 ± 0.07[7] dex
Rotation11.76±0.09 d
Rotational velocity (v sin i)4.0 ± 1.0[7] km/s
Age9.95±2.49 Gyr
Other designations
Wattle, TOI-655, WASP-19, GSC 08181-01711, 2MASS J09534008-4539330, USNO-B1.0 0443-00193111
Database references
SIMBADdata

WASP-19, formally named Wattle,[8] is a magnitude 12.3 star about 869 light-years (266 parsecs) away, located in the Vela constellation of the southern hemisphere.[9] This star has been found to host a transiting hot Jupiter-type planet in tight orbit.

WASP-19 is older than the Sun, has a fraction of heavy elements above the solar abundance, and is rotating rapidly, being spun up by the tides raised by the giant planet on a close orbit.[5]

  1. ^ Cite error: The named reference Roman1987 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Maxted2011 was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Skrutskie2006 was invoked but never defined (see the help page).
  5. ^ 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, Bibcode:2015A&A...577A..90M, doi:10.1051/0004-6361/201525774, S2CID 53324330
  6. ^ 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.
  7. ^ a b c d Cite error: The named reference Torres2012 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference NEW2022 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Hebb2010 was invoked but never defined (see the help page).