Key parameters at a glance
- A radius of 12.33 Earth radii
- A mass of 270.16 Earth masses
- Surface gravity around 1.78 g
- An orbital period of 3.052 days
- Semi-major axis 0.0402 AU
- Equilibrium temperature 1,244 K (971 °C)
- Distance from Earth 532.84 light-years
- Earth Similarity Index 0.111
- Travel time at Voyager 1 speed 9,396,709 years
1 sibling around WASP-41
WASP-41 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| WASP-41 b this | Gas Giant | 12.33 | 270.16 | 3.052 | 1,244 | 2012 |
| WASP-41 c | Gas Giant | 13.10 | 1,010.70 | 421.000 | 241 | 2015 |
WASP-41 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1341of 1771
top 75.7%
This planet
12.33R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-41 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.33 | 11.21 |
| Mass (M⊕) | 1.00 | 270.16 | 317.83 |
| Density (g/cm³) | 5.51 | 0.74 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.78 | 2.53 |
| Insolation (S⊕) | 1.00 | 344.15 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 270.156 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 398943781
Gaia DR2
Gaia DR2 6160877943251930368
Gaia DR3
Gaia DR3 6160877943251930368
System
WASP-41
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.05 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0402 AU.
Transit Fingerprint
Depth
1.900 %
Duration
2.638 h
Impact parameter b
0.100
Rp / R★
0.136500
Transit midpoint (BJD)
2,457,077.2294
Photometric dip
Transit produces a flux drop of 19,000 ppm lasting ≈ 2.64 h.
Extended Orbital Architecture
Planet / star radius ratio
0.136500
Semi-major axis / stellar radius
9.960
Impact parameter (b)
0.100
RV semi-amplitude (K)
138.000 m/s
Transit mid-time (BJD)
2,457,077.2294
Sky-projected obliquity (λ)
6.00°
Angular separation (arcsec)
0.24600
Eq. Temperature
1,244K
(971 °C)
Insolation (S⊕)
344.15
Earth = 1.00
Earth Similarity (ESI)
0.111
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
Maxted et al. 2011Instrument
iKon-L CCD Camera
Publication
2011-05
Observation locale
Ground
Discovery cohort
Planets confirmed in 2012 at SuperWASP (12 shown).
Host System: WASP-41
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,545 K — cooler than the Sun (5,778 K)
Estimated Age
1.20 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.830 R☉
Stellar Mass
0.810 M☉
Metallicity [Fe/H]
0.06
Extended Stellar Properties
Surface gravity (log g)
4.530 dex
Stellar density
2.010 g/cm³
Systemic radial velocity
3.28 km/s
Rotational v·sin i
2.64 km/s
Rotation period
18.41 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
6.092 mas
Total Proper Motion
19.062 mas/yr
PM Right Ascension
14.90 mas/yr
PM Declination
11.89 mas/yr
Galactic Cartesian (pc)
x = -0.846 · y = -0.159 · z = -0.510
Equatorial (J2000)
RA 190.61880° · Dec -30.63982°
Galactic ℓ, b
300.654° · 32.192°
Ecliptic λ, β
202.375° · -23.861°
HTM-20 index
-937862132
Similar Worlds
Kepler-730 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.33 R⊕ · 6,311.2 ly
WASP-44 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.33 R⊕ · 1,188.9 ly
NGTS-15 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.33 R⊕ · 2,565.2 ly
TOI-4961 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.34 R⊕ · 695.0 ly
Kepler-30 c
Gas Giant · G-type yellow (Sun-like)
Radius 12.30 R⊕ · 2,981.8 ly
HAT-P-13 c
Gas Giant · G-type yellow (Sun-like)
Radius 12.30 R⊕ · 805.0 ly