WASP-32

WASP-32 (also known as TYC 2-1155-1) is a yellow main-sequence star in the constellation of Pisces. The star was given the formal name ‘Parumleo’ in January 2020.[5]

Star in the constellation Pisces

WASP-32
Observation data
Epoch J2000      Equinox
Constellation Pisces
Right ascension 00h 15m 50.80778s[1]
Declination 01° 12 01.5868[1]
Apparent magnitude (V) 11.26[2]
Characteristics
Evolutionary stage main sequence star
Spectral type G0V
B−V color index -0.2
J−H color index 0.005
J−K color index 0.342
Astrometry
Radial velocity(Rv) 18.41±0.83[3] km/s
Proper motion(μ) RA: 1.896±0.09[1] mas/yr
Dec.: 16.589±0.062[1] mas/yr
Parallax(π) 3.5949 ± 0.0431[1] mas
Distance 910 ± 10 ly
(278 ± 3 pc)
Details
Mass 1.10±0.03[4] M
Radius 1.11±0.05[4] R
Luminosity 1.5 L
Surface gravity(log g) 4.39±0.03[4] cgs
Temperature 6100±100[4] K
Metallicity [Fe/H] −0.13±0.10[4] dex
Rotational velocity(v sin i) 4.8±0.8[4] km/s
Other designations
Parumleo, Gaia DR2 2546413408888429696, TYC 2-1155-1, 2MASS J00155080+0112016[1]
Database references
SIMBAD data

. . . WASP-32 . . .

The WASP-32 star is relatively depleted of lithium, which is common for massive stars hosting hot Jupiter planets.[4]

The “hot Jupiter” class planet WASP-32 b, later named ‘Viculus’, was discovered around WASP-32 in 2010.[4] It was found to orbit the parent star in prograde direction in 2014.[6]

The follow-up study utilizing transit timing variation analysis, have failed to find any, therefore have excluded existence of other massive planets around WASP-32 as in 2015.[7]

The WASP-32 planetary system[8]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b (Viculus) 3.6±0.07 MJ 0.0394±0.0003 2.71865±0.00008 0.018±0.0065 85.3±0.5° 1.18±0.07 RJ

. . . WASP-32 . . .

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. . . WASP-32 . . .

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