WASP-16

WASP-16 is a magnitude 11 yellow dwarf main sequence star, with characteristics similar to the Sun,^[5] located 628 light-years away in the Virgo constellation.^[1]

WASP-16

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Virgo[1]
Right ascension	14h 18m 43.9225s[2]
Declination	−20° 16′ 31.844″[2]
Apparent magnitude (V)	11.309[3]
Characteristics
Spectral type	G3V[4]
Apparent magnitude (B)	12.51±0.32[5]
Apparent magnitude (R)	~11.00[5]
Apparent magnitude (I)	10.49±0.02[5]
Apparent magnitude (J)	9.984±0.024[5]
Apparent magnitude (H)	9.659±0.022[5]
Apparent magnitude (K)	9.589±0.023[5]
Astrometry
Radial velocity (Rv)	−1.34±0.61[2] km/s
Proper motion (μ)	RA: 0.088(27) mas/yr[2] Dec.: 17.350(21) mas/yr[2]
Parallax (π)	5.1912±0.0262 mas[2]
Distance	628 ± 3 ly (192.6 ± 1.0 pc)
Details
Mass	1.022±0.101[4] M☉
Radius	0.946±0.054[4] R☉
Surface gravity (log g)	4.5±0.2[4] cgs
Temperature	5700±150[4] K
Metallicity [Fe/H]	0.01±0.10[4] dex
Rotational velocity (v sin i)	3.0±1.0[4] km/s
Age	5+3.1 −0[4][6] Gyr
Other designations
TOI-818, TIC 46096489, WASP-16, TYC 6147-229-1, GSC 06147-00229, 2MASS J14184392-2016317, SDSS J141843.92-201631.8[5]
Database references
SIMBAD	data
Exoplanet Archive	data

Planetary system

In 2009, a planet of the star was announced by the SuperWASP project. It is another hot Jupiter type exoplanet.^[4]

In 2024, a candidate mini-neptune was detected, also using the transit method. Further observations are needed to confirm its existence. The planet takes ten days to fully orbit WASP-16 and has an equilibrium temperature of 810 K (537 °C).^[7]

The WASP-16 planetary system^[8][7]

Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	0.908+0.045 −0.071 MJ	0.0422+0.0010 −0.0017	3.1186068(12)	<0.018	85.22+0.27 −0.43°	1.008+0.083 −0.060 RJ
c (unconfirmed)	—	—	10.457+0.018 −0.028	—	—	2.2±0.23 R🜨