Key parameters at a glance
- A radius of 7.27 Earth radii
- A mass of 41.89 Earth masses
- Surface gravity around 0.79 g
- An orbital period of 95.500 days
- Semi-major axis 0.3710 AU
- Equilibrium temperature 306 K (33 °C)
- Distance from Earth 73.78 light-years
- Earth Similarity Index 0.461
- Travel time at Voyager 1 speed 1,301,060 years
1 sibling around TOI-2134
TOI-2134 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| TOI-2134 b | Sub-Neptune | 2.69 | 9.13 | 9.229 | 666 | 2023 |
| TOI-2134 c this | Neptune-like | 7.27 | 41.89 | 95.500 | 306 | 2023 |
TOI-2134 c Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#188of 574
top 32.6%
This planet
7.27R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | TOI-2134 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 7.27 | 11.21 |
| Mass (M⊕) | 1.00 | 41.89 | 317.83 |
| Density (g/cm³) | 5.51 | 0.60 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.79 | 2.53 |
| Insolation (S⊕) | 1.00 | 1.40 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 41.890 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 75878355
Gaia DR2
Gaia DR2 4610267648427698816
Gaia DR3
Gaia DR3 4610267648427698816
System
TOI-2134
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 95.50 Earth days (26.1% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.3710 AU.
Transit Fingerprint
Depth
0.598 %
Duration
5.267 h
Impact parameter b
0.464
Rp / R★
0.094040
Transit midpoint (BJD)
2,459,718.9694
Photometric dip
Transit produces a flux drop of 5,975 ppm lasting ≈ 5.27 h.
Extended Orbital Architecture
Planet / star radius ratio
0.094040
Semi-major axis / stellar radius
112.000
Impact parameter (b)
0.464
RV semi-amplitude (K)
9.740 m/s
Transit mid-time (BJD)
2,459,718.9694
Long. of periastron (ω)
133.00°
Angular separation (arcsec)
16.40000
Eq. Temperature
306K
(33 °C)
Insolation (S⊕)
1.40
Earth = 1.00
Earth Similarity (ESI)
0.461
0 = alien, 1 = Earth-identical
Within the conservative habitable zone — liquid water is physically possible with adequate atmospheric pressure.
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
Rescigno et al. 2023Instrument
TESS CCD Array
Publication
2023-10
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-2134
Spectral Class
K-type orange
Effective Temperature
4,580 K — cooler than the Sun (5,778 K)
Estimated Age
3.80 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.709 R☉
Stellar Mass
0.744 M☉
Metallicity [Fe/H]
0.12
Extended Stellar Properties
Surface gravity (log g)
4.800 dex
Stellar density
2.947 g/cm³
Rotational v·sin i
0.78 km/s
Rotation period
45.78 days
Activity index (log R'HK)
-4.830
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 7 bands
Astrometric Data
Parallax
44.179 mas
Total Proper Motion
288.225 mas/yr
PM Right Ascension
54.37 mas/yr
PM Declination
-283.05 mas/yr
Galactic Cartesian (pc)
x = 0.026 · y = -0.776 · z = 0.630
Equatorial (J2000)
RA 271.93550° · Dec 39.07293°
Galactic ℓ, b
65.871° · 24.730°
Ecliptic λ, β
273.250° · 62.490°
HTM-20 index
-1975808342
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