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[4]
Apparent magnitude (B) 13.05[5]
Apparent magnitude (R) 12.12[5]
Apparent magnitude (I) 11.35[5]
Apparent magnitude (J) 10.911 ± 0.026[6]
Apparent magnitude (H) 10.602 ± 0.022[6]
Apparent magnitude (K) 10.481 ± 0.023[6]
B−V color index 1.3[citation needed]
V−R color index 0.1[citation needed]
R−I color index 0.82[citation needed]
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[citation needed]
Details[7]
Mass0.965+0.091
−0.095
 M
Radius1.006+0.031
−0.034
 R
Luminosity0.905+0.071
−0.069
 L
Surface gravity (log g)4.417+0.020
−0.021
 cgs
Temperature5616+66
−65
 K
Metallicity [Fe/H]0.04+0.25
−0.30
 dex
Rotation11.76±0.09 d[8]
Rotational velocity (v sin i)4.0 ± 1.0[9] km/s
Age6.4+4.1
−3.5
 Gyr
Other designations
Wattle, TOI-655, TIC 35516889, WASP-19, GSC 08181-01711, 2MASS J09534008-4539330, USNO-B1.0 0443-00193111[5]
Database references
SIMBADdata
Exoplanet Archivedata

WASP-19, formally named Wattle,[10] is a magnitude 12.3 star about 869 light-years (266 parsecs) away, located in the Vela constellation of the southern hemisphere.[4] This star has been found to host a transiting hot Jupiter-type planet in a 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.[8]

  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 Cite error: The named reference Hebb2010 was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Skrutskie2006 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Cortés-Zuleta2020 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Maxted2015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Torres2012 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference NEW2022 was invoked but never defined (see the help page).

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