Key parameters at a glance
- A radius of 12.17 Earth radii
- A mass of 637.00 Earth masses
- Surface gravity around 4.30 g
- An orbital period of 15.266 days
- Semi-major axis 0.1180 AU
- Equilibrium temperature 705 K (432 °C)
- Distance from Earth 631.11 light-years
- Earth Similarity Index 0.234
- Travel time at Voyager 1 speed 11,129,600 years
TOI-4515 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1443of 1771
top 81.4%
This planet
12.17R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-4515 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.17 | 11.21 |
| Mass (M⊕) | 1.00 | 637.00 | 317.83 |
| Density (g/cm³) | 5.51 | 1.94 | 1.33 |
| Surface Gravity (g) | 1.00 | 4.30 | 2.53 |
| Insolation (S⊕) | 1.00 | 42.30 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 637.000 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 456862677
Gaia DR2
Gaia DR2 289464440515102976
Gaia DR3
Gaia DR3 289464440515102976
System
TOI-4515
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 15.27 Earth days (4.2% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.1180 AU.
Transit Fingerprint
Depth
1.619 %
Duration
3.240 h
Impact parameter b
0.772
Rp / R★
0.130000
Transit midpoint (BJD)
2,459,451.6219
Photometric dip
Transit produces a flux drop of 16,186 ppm lasting ≈ 3.24 h.
Extended Orbital Architecture
Planet / star radius ratio
0.130000
Semi-major axis / stellar radius
29.670
Impact parameter (b)
0.772
RV semi-amplitude (K)
191.300 m/s
Transit mid-time (BJD)
2,459,451.6219
Long. of periastron (ω)
169.90°
Angular separation (arcsec)
0.61000
Eq. Temperature
705K
(432 °C)
Insolation (S⊕)
42.30
Earth = 1.00
Earth Similarity (ESI)
0.234
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
Carleo et al. 2024Instrument
TESS CCD Array
Publication
2024-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-4515
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,433 K — cooler than the Sun (5,778 K)
Estimated Age
1.20 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.860 R☉
Stellar Mass
0.949 M☉
Metallicity [Fe/H]
0.05
Extended Stellar Properties
Surface gravity (log g)
4.480 dex
Stellar density
2.123 g/cm³
Systemic radial velocity
12.75 km/s
Rotational v·sin i
3.40 km/s
Rotation period
15.50 days
Activity index (log R'HK)
-4.670
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
5.140 mas
Total Proper Motion
5.466 mas/yr
PM Right Ascension
-4.12 mas/yr
PM Declination
3.59 mas/yr
Galactic Cartesian (pc)
x = 0.867 · y = 0.336 · z = 0.367
Equatorial (J2000)
RA 21.18618° · Dec 21.51306°
Galactic ℓ, b
133.168° · -40.696°
Ecliptic λ, β
27.640° · 11.696°
HTM-20 index
-1437706653
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