Key parameters at a glance
- A radius of 13.16 Earth radii
- A mass of 607.06 Earth masses
- Surface gravity around 3.51 g
- An orbital period of 1.430 days
- Semi-major axis 0.0234 AU
- Equilibrium temperature 1,636 K (1363 °C)
- Distance from Earth 1,224.10 light-years
- Earth Similarity Index 0.088
- Travel time at Voyager 1 speed 21,586,933 years
WASP-46 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#901of 1771
top 50.8%
This planet
13.16R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-46 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.16 | 11.21 |
| Mass (M⊕) | 1.00 | 607.06 | 317.83 |
| Density (g/cm³) | 5.51 | 1.47 | 1.33 |
| Surface Gravity (g) | 1.00 | 3.51 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,281.24 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 607.055 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 231663901
Gaia DR2
Gaia DR2 6462994429708755072
Gaia DR3
Gaia DR3 6462994429708755072
System
WASP-46
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.43 Earth days (0.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0233 AU.
Transit Fingerprint
Depth
1.896 %
Duration
1.617 h
Impact parameter b
0.699
Rp / R★
0.140750
Transit midpoint (BJD)
2,455,392.3166
Photometric dip
Transit produces a flux drop of 18,961 ppm lasting ≈ 1.62 h.
Extended Orbital Architecture
Planet / star radius ratio
0.140750
Semi-major axis / stellar radius
5.851
Impact parameter (b)
0.699
RV semi-amplitude (K)
386.000 m/s
Transit mid-time (BJD)
2,455,392.3166
Angular separation (arcsec)
0.06220
Eq. Temperature
1,636K
(1363 °C)
Insolation (S⊕)
1,281.24
Earth = 1.00
Earth Similarity (ESI)
0.088
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
Anderson et al. 2011Instrument
iKon-L CCD Camera
Publication
2012-05
Observation locale
Ground
Discovery cohort
Planets confirmed in 2011 at SuperWASP (8 shown).
Host System: WASP-46
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,600 K — cooler than the Sun (5,778 K)
Estimated Age
9.60 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.858 R☉
Stellar Mass
0.828 M☉
Metallicity [Fe/H]
-0.30
Extended Stellar Properties
Surface gravity (log g)
4.489 dex
Stellar density
1.845 g/cm³
Systemic radial velocity
-3.78 km/s
Rotational v·sin i
1.90 km/s
Rotation period
16.00 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
2.636 mas
Total Proper Motion
20.400 mas/yr
PM Right Ascension
12.64 mas/yr
PM Declination
-16.01 mas/yr
Galactic Cartesian (pc)
x = 0.422 · y = -0.370 · z = -0.828
Equatorial (J2000)
RA 318.73701° · Dec -55.87186°
Galactic ℓ, b
340.698° · -42.074°
Ecliptic λ, β
302.232° · -37.755°
HTM-20 index
355084979
Observation Record
RV measurements
1
Transmission spectra
4
Emission spectra
4
Similar Worlds
TOI-2977 b
Gas Giant · G-type yellow (Sun-like)
Radius 13.16 R⊕ · —
HATS-30 b
Gas Giant · G-type yellow (Sun-like)
Radius 13.17 R⊕ · 1,115.9 ly
Kepler-670 b
Gas Giant · G-type yellow (Sun-like)
Radius 13.18 R⊕ · 3,065.0 ly
TOI-3819 b
Gas Giant · G-type yellow (Sun-like)
Radius 13.14 R⊕ · 1,820.4 ly
WASP-110 b
Gas Giant · G-type yellow (Sun-like)
Radius 13.19 R⊕ · 896.8 ly
TOI-905 b
Gas Giant · G-type yellow (Sun-like)
Radius 13.13 R⊕ · 517.4 ly