Key parameters at a glance
- A radius of 13.26 Earth radii
- A mass of 252.36 Earth masses
- Surface gravity around 1.44 g
- An orbital period of 2.881 days
- Semi-major axis 0.0404 AU
- Equilibrium temperature 1,395 K (1122 °C)
- Distance from Earth 564.63 light-years
- Earth Similarity Index 0.092
- Travel time at Voyager 1 speed 9,957,276 years
TOI-4463 A b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#843of 1771
top 47.5%
This planet
13.26R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-4463 A b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.26 | 11.21 |
| Mass (M⊕) | 1.00 | 252.36 | 317.83 |
| Density (g/cm³) | 5.51 | 0.60 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.44 | 2.53 |
| Insolation (S⊕) | 1.00 | 633.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 252.356 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 8599009
Gaia DR2
Gaia DR2 4524517290642206336
Gaia DR3
Gaia DR3 4524517290642206336
System
TOI-4463
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.88 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0404 AU.
Transit Fingerprint
Depth
1.311 %
Duration
1.850 h
Impact parameter b
0.880
Transit midpoint (BJD)
2,459,291.6400
Photometric dip
Transit produces a flux drop of 13,110 ppm lasting ≈ 1.85 h.
Extended Orbital Architecture
Semi-major axis / stellar radius
8.170
Impact parameter (b)
0.880
RV semi-amplitude (K)
108.700 m/s
Transit mid-time (BJD)
2,459,291.6400
Angular separation (arcsec)
0.23300
Eq. Temperature
1,395K
(1122 °C)
Insolation (S⊕)
633.00
Earth = 1.00
Earth Similarity (ESI)
0.092
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
Yee et al. 2023Instrument
TESS CCD Array
Publication
2023-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-4463 A
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,640 K — cooler than the Sun (5,778 K)
Estimated Age
4.10 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.062 R☉
Stellar Mass
1.056 M☉
Metallicity [Fe/H]
0.25
Extended Stellar Properties
Surface gravity (log g)
4.410 dex
Stellar density
1.240 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
5.748 mas
Total Proper Motion
50.989 mas/yr
PM Right Ascension
-5.21 mas/yr
PM Declination
50.72 mas/yr
Galactic Cartesian (pc)
x = 0.154 · y = -0.934 · z = 0.321
Equatorial (J2000)
RA 279.35813° · Dec 18.72995°
Galactic ℓ, b
48.278° · 11.414°
Ecliptic λ, β
281.914° · 41.783°
HTM-20 index
-728599302
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