Key parameters at a glance
- A radius of 6.06 Earth radii
- A mass of 34.62 Earth masses
- Surface gravity around 0.94 g
- An orbital period of 3.738 days
- Semi-major axis 0.0491 AU
- Equilibrium temperature 1,443 K (1170 °C)
- Distance from Earth 897.79 light-years
- Earth Similarity Index 0.116
- Travel time at Voyager 1 speed 15,832,584 years
TOI-2498 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#279of 574
top 48.4%
This planet
6.06R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | TOI-2498 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 6.06 | 11.21 |
| Mass (M⊕) | 1.00 | 34.62 | 317.83 |
| Density (g/cm³) | 5.51 | 0.86 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.94 | 2.53 |
| Insolation (S⊕) | 1.00 | 790.48 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 34.620 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 263179590
Gaia DR2
Gaia DR2 3330907293088717824
Gaia DR3
Gaia DR3 3330907293088717824
System
TOI-2498
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.74 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0491 AU.
Transit Fingerprint
Depth
0.132 %
Duration
2.975 h
Impact parameter b
0.420
Rp / R★
0.040000
Transit midpoint (BJD)
2,459,204.4167
Photometric dip
Transit produces a flux drop of 1,317 ppm lasting ≈ 2.98 h.
Extended Orbital Architecture
Planet / star radius ratio
0.040000
Impact parameter (b)
0.420
RV semi-amplitude (K)
13.250 m/s
Transit mid-time (BJD)
2,459,204.4167
Long. of periastron (ω)
89.99°
Angular separation (arcsec)
0.17800
Eq. Temperature
1,443K
(1170 °C)
Insolation (S⊕)
790.48
Earth = 1.00
Earth Similarity (ESI)
0.116
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
Frame et al. 2023Instrument
TESS CCD Array
Publication
2023-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-2498
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,905 K — hotter than the Sun (5,778 K)
Estimated Age
3.60 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.260 R☉
Stellar Mass
1.120 M☉
Metallicity [Fe/H]
0.17
Extended Stellar Properties
Surface gravity (log g)
4.297 dex
Stellar density
0.790 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
3.605 mas
Total Proper Motion
20.102 mas/yr
PM Right Ascension
-0.31 mas/yr
PM Declination
-20.10 mas/yr
Galactic Cartesian (pc)
x = -0.093 · y = 0.976 · z = 0.195
Equatorial (J2000)
RA 95.41622° · Dec 11.25165°
Galactic ℓ, b
199.537° · -1.381°
Ecliptic λ, β
95.429° · -12.086°
HTM-20 index
-2117100290
Similar Worlds
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Radius 6.06 R⊕ · 7,534.6 ly
HD 34445 d
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Kepler-497 b
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Kepler-63 b
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Kepler-1750 b
Neptune-like · G-type yellow (Sun-like)
Radius 6.00 R⊕ · 4,883.6 ly