Key parameters at a glance
- A radius of 14.25 Earth radii
- A mass of 403.95 Earth masses
- Surface gravity around 1.99 g
- An orbital period of 1.573 days
- Semi-major axis 0.0265 AU
- Equilibrium temperature 1,689 K (1416 °C)
- Distance from Earth 1,206.54 light-years
- Earth Similarity Index 0.076
- Travel time at Voyager 1 speed 21,277,258 years
WASP-64 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#328of 1771
top 18.5%
This planet
14.25R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-64 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.25 | 11.21 |
| Mass (M⊕) | 1.00 | 403.95 | 317.83 |
| Density (g/cm³) | 5.51 | 0.82 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.99 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,563.64 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 403.945 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 52640302
Gaia DR2
Gaia DR2 5583523425437258240
Gaia DR3
Gaia DR3 5583523425437258240
System
WASP-64
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.57 Earth days (0.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0265 AU.
Transit Fingerprint
Depth
1.522 %
Duration
2.400 h
Impact parameter b
0.322
Rp / R★
0.123400
Transit midpoint (BJD)
2,455,582.6017
Photometric dip
Transit produces a flux drop of 15,220 ppm lasting ≈ 2.40 h.
Extended Orbital Architecture
Planet / star radius ratio
0.123400
Semi-major axis / stellar radius
5.390
Impact parameter (b)
0.322
RV semi-amplitude (K)
221.000 m/s
Transit mid-time (BJD)
2,455,582.6017
Angular separation (arcsec)
0.07160
Eq. Temperature
1,689K
(1416 °C)
Insolation (S⊕)
1,563.64
Earth = 1.00
Earth Similarity (ESI)
0.076
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Gillon et al. 2013Instrument
iKon-L CCD Camera
Publication
2013-04
Observation locale
Ground
Discovery cohort
Planets confirmed in 2012 at SuperWASP (12 shown).
Host System: WASP-64
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,400 K — cooler than the Sun (5,778 K)
Estimated Age
1.20 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.058 R☉
Stellar Mass
1.004 M☉
Metallicity [Fe/H]
-0.08
Extended Stellar Properties
Surface gravity (log g)
4.392 dex
Stellar density
1.196 g/cm³
Systemic radial velocity
33.19 km/s
Rotational v·sin i
3.40 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
2.675 mas
Total Proper Motion
19.421 mas/yr
PM Right Ascension
-19.39 mas/yr
PM Declination
-1.12 mas/yr
Galactic Cartesian (pc)
x = -0.162 · y = 0.824 · z = -0.543
Equatorial (J2000)
RA 101.11492° · Dec -32.85839°
Galactic ℓ, b
242.234° · -15.674°
Ecliptic λ, β
106.677° · -55.656°
HTM-20 index
-835498553
Observation Record
RV measurements
1
Emission spectra
3
Archive notes
1
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