Key parameters at a glance
- A radius of 9.24 Earth radii
- A mass of 96.30 Earth masses
- Surface gravity around 1.13 g
- An orbital period of 6.403 days
- Semi-major axis 0.0708 AU
- Equilibrium temperature 1,388 K (1115 °C)
- Distance from Earth 402.14 light-years
- Earth Similarity Index 0.097
- Travel time at Voyager 1 speed 7,091,748 years
TOI-622 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#65of 574
top 11.1%
This planet
9.24R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | TOI-622 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 9.24 | 11.21 |
| Mass (M⊕) | 1.00 | 96.30 | 317.83 |
| Density (g/cm³) | 5.51 | 0.51 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.13 | 2.53 |
| Insolation (S⊕) | 1.00 | 602.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 96.302 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 83092282
Gaia DR2
Gaia DR2 5516690878153930240
Gaia DR3
Gaia DR3 5516690878153930240
System
TOI-622
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 6.40 Earth days (1.8% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0708 AU.
Transit Fingerprint
Depth
0.382 %
Duration
3.907 h
Impact parameter b
0.629
Rp / R★
0.059890
Transit midpoint (BJD)
2,458,520.6918
Photometric dip
Transit produces a flux drop of 3,815 ppm lasting ≈ 3.91 h.
Extended Orbital Architecture
Planet / star radius ratio
0.059890
Semi-major axis / stellar radius
10.637
Impact parameter (b)
0.629
RV semi-amplitude (K)
27.800 m/s
Transit mid-time (BJD)
2,458,520.6918
Angular separation (arcsec)
0.57400
Eq. Temperature
1,388K
(1115 °C)
Insolation (S⊕)
602.00
Earth = 1.00
Earth Similarity (ESI)
0.097
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
Psaridi et al. 2023Instrument
TESS CCD Array
Publication
2023-07
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-622
Spectral Class
F-type yellow-white
Effective Temperature
6,400 K — hotter than the Sun (5,778 K)
Estimated Age
0.90 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.415 R☉
Stellar Mass
1.313 M☉
Metallicity [Fe/H]
0.09
Extended Stellar Properties
Surface gravity (log g)
4.200 dex
Stellar density
0.452 g/cm³
Rotational v·sin i
19.00 km/s
Rotation period
3.77 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
8.082 mas
Total Proper Motion
18.178 mas/yr
PM Right Ascension
-4.63 mas/yr
PM Declination
-17.58 mas/yr
Galactic Cartesian (pc)
x = -0.398 · y = 0.562 · z = -0.725
Equatorial (J2000)
RA 125.30505° · Dec -46.48430°
Galactic ℓ, b
263.186° · -5.549°
Ecliptic λ, β
150.284° · -62.731°
HTM-20 index
-1517065316
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