Key parameters at a glance
- A radius of 13.67 Earth radii
- A mass of 7,024.01 Earth masses
- Surface gravity around 37.56 g
- An orbital period of 4.034 days
- Semi-major axis 0.0613 AU
- Equilibrium temperature 2,290 K (2017 °C)
- Distance from Earth 1,681.67 light-years
- Earth Similarity Index 0.051
- Travel time at Voyager 1 speed 29,656,251 years
TOI-1994 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#598of 1771
top 33.7%
This planet
13.67R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-1994 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.67 | 11.21 |
| Mass (M⊕) | 1.00 | 7,024.01 | 317.83 |
| Density (g/cm³) | 5.51 | 15.00 | 1.33 |
| Surface Gravity (g) | 1.00 | 37.56 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,910.26 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 7,024.008 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 445903569
Gaia DR2
Gaia DR2 5405557504173563648
Gaia DR3
Gaia DR3 5405557504184474496
System
TOI-1994
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.03 Earth days (1.1% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0613 AU.
Transit Fingerprint
Depth
0.297 %
Duration
4.044 h
Impact parameter b
0.320
Rp / R★
0.054490
Transit midpoint (BJD)
2,458,854.3726
Photometric dip
Transit produces a flux drop of 2,969 ppm lasting ≈ 4.04 h.
Extended Orbital Architecture
Planet / star radius ratio
0.054490
Semi-major axis / stellar radius
5.720
Impact parameter (b)
0.320
RV semi-amplitude (K)
1,970.000 m/s
Transit mid-time (BJD)
2,458,854.3726
Long. of periastron (ω)
131.60°
Angular separation (arcsec)
0.11900
Eq. Temperature
2,290K
(2017 °C)
Insolation (S⊕)
1,910.26
Earth = 1.00
Earth Similarity (ESI)
0.051
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
Page et al. 2024Instrument
TESS CCD Array
Publication
2024-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-1994
Spectral Class
A-type white
Effective Temperature
7,700 K — hotter than the Sun (5,778 K)
Estimated Age
0.94 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
2.300 R☉
Stellar Mass
1.860 M☉
Metallicity [Fe/H]
-0.01
Extended Stellar Properties
Surface gravity (log g)
3.982 dex
Stellar density
0.215 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
1.911 mas
Total Proper Motion
13.659 mas/yr
PM Right Ascension
-13.55 mas/yr
PM Declination
-1.74 mas/yr
Galactic Cartesian (pc)
x = -0.520 · y = 0.336 · z = -0.785
Equatorial (J2000)
RA 147.17458° · Dec -51.75656°
Galactic ℓ, b
276.633° · 1.532°
Ecliptic λ, β
180.497° · -58.655°
HTM-20 index
-1102743888
Similar Worlds
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Gas Giant · A-type white
Radius 13.11 R⊕ · 134.5 ly
HR 8799 b
Gas Giant · A-type white
Radius 13.00 R⊕ · 134.5 ly
HR 8799 c
Gas Giant · A-type white
Radius 13.00 R⊕ · 134.5 ly
HR 8799 d
Gas Giant · A-type white
Radius 13.00 R⊕ · 134.5 ly
HD 95086 b
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WD 0806-661 b
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