Key parameters at a glance
- A radius of 8.18 Earth radii
- A mass of 1,230.00 Earth masses
- Surface gravity around 18.37 g
- An orbital period of 22.093 days
- Semi-major axis 0.1730 AU
- Equilibrium temperature 950 K (677 °C)
- Distance from Earth 281.64 light-years
- Earth Similarity Index 0.116
- Travel time at Voyager 1 speed 4,966,651 years
TOI-4641 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#143of 574
top 24.7%
This planet
8.18R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | TOI-4641 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 8.18 | 11.21 |
| Mass (M⊕) | 1.00 | 1,230.00 | 317.83 |
| Density (g/cm³) | 5.51 | — | 1.33 |
| Surface Gravity (g) | 1.00 | 18.37 | 2.53 |
| Insolation (S⊕) | 1.00 | 192.58 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,229.996 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
HIP
HIP 13224
TIC
TIC 436873727
Gaia DR2
Gaia DR2 114340658009875072
Gaia DR3
Gaia DR3 114340658009875072
System
TOI-4641
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 22.09 Earth days (6.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1730 AU.
Transit Fingerprint
Depth
0.263 %
Duration
5.438 h
Impact parameter b
0.780
Rp / R★
0.042000
Transit midpoint (BJD)
2,459,510.8276
Photometric dip
Transit produces a flux drop of 2,634 ppm lasting ≈ 5.44 h.
Extended Orbital Architecture
Planet / star radius ratio
0.042000
Semi-major axis / stellar radius
21.530
Impact parameter (b)
0.780
Transit mid-time (BJD)
2,459,510.8276
Sky-projected obliquity (λ)
1.41°
True obliquity (ψ)
2.40°
Angular separation (arcsec)
2.00000
Eq. Temperature
950K
(677 °C)
Insolation (S⊕)
192.58
Earth = 1.00
Earth Similarity (ESI)
0.116
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Discovery Paper
Primary reference
Bieryla 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-4641
Spectral Class
F-type yellow-white
Effective Temperature
6,560 K — hotter than the Sun (5,778 K)
Estimated Age
2.69 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.720 R☉
Stellar Mass
1.410 M☉
Metallicity [Fe/H]
-0.09
Extended Stellar Properties
Surface gravity (log g)
4.110 dex
Stellar density
0.381 g/cm³
Rotational v·sin i
86.30 km/s
Metallicity ratio
[M/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
11.552 mas
Total Proper Motion
64.696 mas/yr
PM Right Ascension
61.56 mas/yr
PM Declination
-19.89 mas/yr
Galactic Cartesian (pc)
x = 0.666 · y = 0.611 · z = 0.428
Equatorial (J2000)
RA 42.55820° · Dec 25.33353°
Galactic ℓ, b
154.152° · -30.240°
Ecliptic λ, β
47.673° · 8.593°
HTM-20 index
607763432
Similar Worlds
TOI-4507 b
Neptune-like · F-type yellow-white
Radius 8.20 R⊕ · 581.4 ly
Kepler-703 b
Neptune-like · F-type yellow-white
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DMPP-2 c
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Kepler-117 b
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TOI-1836 b
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TOI-5786 b
Neptune-like · F-type yellow-white
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