Key parameters at a glance
- A radius of 3.42 Earth radii
- A mass of 22.40 Earth masses
- Surface gravity around 1.92 g
- An orbital period of 2.110 days
- Semi-major axis 0.0260 AU
- Equilibrium temperature 1,395 K (1122 °C)
- Distance from Earth 533.85 light-years
- Earth Similarity Index 0.166
- Travel time at Voyager 1 speed 9,414,367 years
TOI-132 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#210of 1978
top 10.6%
This planet
3.42R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | TOI-132 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.42 | 11.21 |
| Mass (M⊕) | 1.00 | 22.40 | 317.83 |
| Density (g/cm³) | 5.51 | 3.08 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.92 | 2.53 |
| Insolation (S⊕) | 1.00 | 860.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 22.400 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 89020549
Gaia DR2
Gaia DR2 6520880040423258240
Gaia DR3
Gaia DR3 6520880040423258240
System
TOI-132
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.11 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0260 AU.
Transit Fingerprint
Depth
0.131 %
Duration
2.134 h
Impact parameter b
0.533
Rp / R★
0.035600
Transit midpoint (BJD)
2,458,333.2310
Photometric dip
Transit produces a flux drop of 1,310 ppm lasting ≈ 2.13 h.
Extended Orbital Architecture
Planet / star radius ratio
0.035600
Semi-major axis / stellar radius
6.362
Impact parameter (b)
0.533
RV semi-amplitude (K)
11.380 m/s
Transit mid-time (BJD)
2,458,333.2310
Long. of periastron (ω)
125.88°
Angular separation (arcsec)
0.15900
Eq. Temperature
1,395K
(1122 °C)
Insolation (S⊕)
860.00
Earth = 1.00
Earth Similarity (ESI)
0.166
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
D Iacute Az et al. 2020Instrument
TESS CCD Array
Publication
2020-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2020 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-132
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,397 K — cooler than the Sun (5,778 K)
Estimated Age
6.34 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.900 R☉
Stellar Mass
0.970 M☉
Metallicity [Fe/H]
0.16
Extended Stellar Properties
Surface gravity (log g)
4.480 dex
Stellar density
1.890 g/cm³
Systemic radial velocity
-19.90 km/s
Rotational v·sin i
3.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 14 bands
Astrometric Data
Parallax
6.081 mas
Total Proper Motion
63.866 mas/yr
PM Right Ascension
35.55 mas/yr
PM Declination
-53.05 mas/yr
Galactic Cartesian (pc)
x = 0.675 · y = -0.267 · z = -0.688
Equatorial (J2000)
RA 338.39966° · Dec -43.43687°
Galactic ℓ, b
353.414° · -57.818°
Ecliptic λ, β
322.459° · -31.634°
HTM-20 index
730443626
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