Key parameters at a glance
- A radius of 11.21 Earth radii
- A mass of 177.98 Earth masses
- Surface gravity around 1.42 g
- An orbital period of 4.318 days
- Semi-major axis 0.0524 AU
- Equilibrium temperature 1,250 K (977 °C)
- Distance from Earth 430.84 light-years
- Earth Similarity Index 0.099
- Travel time at Voyager 1 speed 7,597,846 years
WASP-34 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1629of 1771
top 91.9%
This planet
11.21R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-34 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.21 | 11.21 |
| Mass (M⊕) | 1.00 | 177.98 | 317.83 |
| Density (g/cm³) | 5.51 | 0.41 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.42 | 2.53 |
| Insolation (S⊕) | 1.00 | 229.96 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 177.985 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 437242640
Gaia DR2
Gaia DR2 3537110833333561728
Gaia DR3
Gaia DR3 3537110837630877568
System
WASP-34
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.32 Earth days (1.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0524 AU.
Transit Fingerprint
Depth
1.300 %
Duration
2.102 h
Impact parameter b
0.904
Rp / R★
0.112300
Transit midpoint (BJD)
2,458,654.3645
Photometric dip
Transit produces a flux drop of 13,000 ppm lasting ≈ 2.10 h.
Extended Orbital Architecture
Planet / star radius ratio
0.112300
Semi-major axis / stellar radius
12.070
Impact parameter (b)
0.904
RV semi-amplitude (K)
72.100 m/s
Transit mid-time (BJD)
2,458,654.3645
Long. of periastron (ω)
319.80°
Angular separation (arcsec)
0.39700
Eq. Temperature
1,250K
(977 °C)
Insolation (S⊕)
229.96
Earth = 1.00
Earth Similarity (ESI)
0.099
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
Smalley et al. 2011Instrument
iKon-L CCD Camera
Publication
2011-02
Observation locale
Ground
Discovery cohort
Planets confirmed in 2010 at SuperWASP (12 shown).
Host System: WASP-34
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,700 K — cooler than the Sun (5,778 K)
Estimated Age
7.80 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.910 R☉
Stellar Mass
0.960 M☉
Metallicity [Fe/H]
-0.02
Extended Stellar Properties
Surface gravity (log g)
4.500 dex
Stellar density
1.780 g/cm³
Systemic radial velocity
49.94 km/s
Rotational v·sin i
1.40 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
7.542 mas
Total Proper Motion
79.095 mas/yr
PM Right Ascension
-43.90 mas/yr
PM Declination
-65.79 mas/yr
Galactic Cartesian (pc)
x = -0.885 · y = 0.231 · z = -0.405
Equatorial (J2000)
RA 165.39937° · Dec -23.86095°
Galactic ℓ, b
272.919° · 32.532°
Ecliptic λ, β
176.724° · -27.571°
HTM-20 index
141742853
Similar Worlds
TIC 279401253 b
Gas Giant · G-type yellow (Sun-like)
Radius 11.21 R⊕ · 931.4 ly
TOI-2338 b
Gas Giant · G-type yellow (Sun-like)
Radius 11.21 R⊕ · 1,024.1 ly
TOI-2524 b
Gas Giant · G-type yellow (Sun-like)
Radius 11.21 R⊕ · 1,431.3 ly
Kepler-68 e
Gas Giant · G-type yellow (Sun-like)
Radius 11.20 R⊕ · 470.2 ly
WASP-157 b
Gas Giant · G-type yellow (Sun-like)
Radius 11.19 R⊕ · 1,089.5 ly
Kepler-289 c
Gas Giant · G-type yellow (Sun-like)
Radius 11.23 R⊕ · 2,297.6 ly