WASP-67

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WASP-67
Observation data
Epoch J2000      Equinox J2000
Constellation Sagittarius
Right ascension 19h 42m 58.5217s[1]
Declination −19° 56′ 58.523″[1]
Apparent magnitude (V) 12.54
Characteristics
Evolutionary stage Main sequence
Spectral type K0V[2]
Distance
621 ± 5 ly
(190 ± 2 pc)
Details
Gyr
TYC 6307-1388-1, 2MASS J19425852-1956585[5]
Database references
SIMBADdata

WASP-67 is a K-type main-sequence star about 620 light-years away. The stars age is poorly constrained, but is likely older than the Sun`s at approximately 8.7+5.5
−8.6
billion years (ie. somewhere between 100 million years and the age of the universe).[2] WASP-67 is slightly depleted in heavy elements, having 85% of the solar abundance of iron.[3]

A multiplicity survey in 2016 has found one candidate stellar companion to WASP-67 at a projected separation of 4.422

″.[6] Nonetheless, follow-up observations in 2017 failed to find any bound stellar companions.[7]

Planetary system

In 2012 a

b was detected on a tight, circular orbit.[4] Its equilibrium temperature is 1050 K.[8]

The planetary atmosphere contains water, and a cloud layer is located higher than in the similar gas giant HAT-P-38b, indicating a high planetary metallicity.[8]

The WASP-67 planetary system[3]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b
0.43±0.09 MJ 0.0510+0.001
−0.0008
[2]
4.61442±0.00001 0[9] 85.8±0.35° 1.15±0.11 RJ

References