Key parameters at a glance
- A radius of 11.21 Earth radii
- A mass of 95.35 Earth masses
- Surface gravity around 0.76 g
- An orbital period of 30.084 days
- Semi-major axis 0.2010 AU
- Equilibrium temperature 904 K (631 °C)
- Distance from Earth 853.99 light-years
- Earth Similarity Index 0.143
- Travel time at Voyager 1 speed 15,060,065 years
TOI-4406 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1633of 1771
top 92.2%
This planet
11.21R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-4406 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.21 | 11.21 |
| Mass (M⊕) | 1.00 | 95.35 | 317.83 |
| Density (g/cm³) | 5.51 | 0.37 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.76 | 2.53 |
| Insolation (S⊕) | 1.00 | 58.01 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 95.349 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 206541859
Gaia DR2
Gaia DR2 4910452812646300544
Gaia DR3
Gaia DR3 4910452812646300544
System
TOI-4406
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 30.08 Earth days (8.2% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.2010 AU.
Transit Fingerprint
Depth
0.544 %
Duration
3.986 h
Impact parameter b
0.887
Rp / R★
0.079000
Transit midpoint (BJD)
2,458,372.1940
Photometric dip
Transit produces a flux drop of 5,439 ppm lasting ≈ 3.99 h.
Extended Orbital Architecture
Planet / star radius ratio
0.079000
Semi-major axis / stellar radius
33.500
Impact parameter (b)
0.887
RV semi-amplitude (K)
17.000 m/s
Transit mid-time (BJD)
2,458,372.1940
Long. of periastron (ω)
39.00°
Angular separation (arcsec)
0.76800
Eq. Temperature
904K
(631 °C)
Insolation (S⊕)
58.01
Earth = 1.00
Earth Similarity (ESI)
0.143
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
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
Brahm et al. 2023Instrument
TESS CCD Array
Publication
2023-04
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-4406
Spectral Class
F-type yellow-white
Effective Temperature
6,219 K — hotter than the Sun (5,778 K)
Estimated Age
2.90 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.290 R☉
Stellar Mass
1.190 M☉
Metallicity [Fe/H]
0.10
Extended Stellar Properties
Surface gravity (log g)
4.290 dex
Stellar density
0.784 g/cm³
Rotational v·sin i
4.50 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
3.790 mas
Total Proper Motion
39.419 mas/yr
PM Right Ascension
34.48 mas/yr
PM Declination
19.11 mas/yr
Galactic Cartesian (pc)
x = 0.519 · y = 0.169 · z = -0.838
Equatorial (J2000)
RA 18.04852° · Dec -56.92539°
Galactic ℓ, b
297.271° · -59.974°
Ecliptic λ, β
341.043° · -56.727°
HTM-20 index
-1615799677
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