WASP-11

WASP-11, also designated HAT-P-10, is a binary star system. The primary star is a main-sequence orange dwarf star. The secondary is an M dwarf with a projected separation of 42 AU.^[10] The system is located about 424 light-years away^[2] in the constellation Aries.

WASP-11

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Aries[1]
Right ascension	03h 09m 28.5434s[2]
Declination	+30° 40′ 24.863″[2]
Apparent magnitude (V)	11.57 ± 0.15[3]
Characteristics
Spectral type	K3V[4]
Apparent magnitude (B)	12.58 ± 0.30[3]
Apparent magnitude (V)	11.57 ± 0.15[3]
Apparent magnitude (J)	10.015 ± 0.020[5]
Apparent magnitude (H)	9.560 ± 0.019[5]
Apparent magnitude (K)	9.421 ± 0.017[5]
Variable type	planetary transit[6]
Astrometry
Radial velocity (Rv)	5.21±0.28[2] km/s
Proper motion (μ)	RA: 3.334(68) mas/yr[2] Dec.: −44.433(53) mas/yr[2]
Parallax (π)	7.6997±0.0579 mas[2]
Distance	424 ± 3 ly (129.9 ± 1.0 pc)
Details[7]
WASP-11 A
Mass	0.77±0.02[8] M☉
Radius	0.74±0.01[8] R☉
Luminosity	0.28±0.002[8] L☉
Surface gravity (log g)	4.58±0.02[8] cgs
Temperature	4,884±16[8] K
Metallicity [Fe/H]	0.25±0.07[9] dex
Rotational velocity (v sin i)	1.9±0.9[9] km/s
Age	8.7±3.5[8] Gyr
WASP-11 B
Mass	0.34 M☉
Temperature	3,494±37[10] K
Other designations
HAT-P-10, TOI-4516, TIC 85593751, WASP-11, TYC 2340-1714-1, GSC 02340-01714, 2MASS J03092855+3040249[3]
Database references
SIMBAD	data
Exoplanet Archive	data

Planetary system

A hot Jupiter with half Jupiter's mass, WASP-11b (or HAT-P-10b), was detected around the primary star independently by the Hungarian Automated Telescope Network and the Wide Angle Search for Planets teams, both of which used the transit method.^[4][6]

The WASP-11 planetary system^[11]

Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	0.532+0.020 −0.021 MJ	0.04376+0.00071 −0.00067	3.7224793±0.0000007	<0.03	89.03±0.34°	0.990±0.022 RJ