Key parameters at a glance
- A radius of 9.86 Earth radii
- A mass of 953.49 Earth masses
- Surface gravity around 9.80 g
- An orbital period of 8.275 days
- Semi-major axis 0.0831 AU
- Equilibrium temperature 1,080 K (807 °C)
- Distance from Earth 1,819.08 light-years
- Earth Similarity Index 0.174
- Travel time at Voyager 1 speed 32,079,468 years
TOI-2416 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#12of 574
top 1.9%
This planet
9.86R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | TOI-2416 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 9.86 | 11.21 |
| Mass (M⊕) | 1.00 | 953.49 | 317.83 |
| Density (g/cm³) | 5.51 | 5.40 | 1.33 |
| Surface Gravity (g) | 1.00 | 9.80 | 2.53 |
| Insolation (S⊕) | 1.00 | 130.93 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 953.485 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 237922465
Gaia DR2
Gaia DR2 4680527991927519744
Gaia DR3
Gaia DR3 4680527991927519744
System
TOI-2416
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.28 Earth days (2.3% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0831 AU.
Transit Fingerprint
Depth
0.651 %
Duration
3.755 h
Rp / R★
0.073200
Transit midpoint (BJD)
2,458,359.4884
Photometric dip
Transit produces a flux drop of 6,510 ppm lasting ≈ 3.76 h.
Extended Orbital Architecture
Planet / star radius ratio
0.073200
Semi-major axis / stellar radius
14.400
RV semi-amplitude (K)
296.000 m/s
Transit mid-time (BJD)
2,458,359.4884
Long. of periastron (ω)
30.00°
Angular separation (arcsec)
0.14900
Eq. Temperature
1,080K
(807 °C)
Insolation (S⊕)
130.93
Earth = 1.00
Earth Similarity (ESI)
0.174
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
Eberhardt et al. 2023Instrument
TESS CCD Array
Publication
2023-12
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-2416
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,808 K — hotter than the Sun (5,778 K)
Estimated Age
4.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.236 R☉
Stellar Mass
1.118 M☉
Metallicity [Fe/H]
0.32
Extended Stellar Properties
Surface gravity (log g)
4.303 dex
Stellar density
0.835 g/cm³
Rotational v·sin i
2.40 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
1.764 mas
Total Proper Motion
13.343 mas/yr
PM Right Ascension
8.64 mas/yr
PM Declination
-10.16 mas/yr
Galactic Cartesian (pc)
x = 0.263 · y = 0.411 · z = -0.873
Equatorial (J2000)
RA 57.33894° · Dec -60.78719°
Galactic ℓ, b
273.975° · -45.065°
Ecliptic λ, β
6.450° · -74.629°
HTM-20 index
-1815200451
Similar Worlds
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TOI-2328 b
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