Key parameters at a glance
- A radius of 9.17 Earth radii
- A mass of 120.46 Earth masses
- Surface gravity around 1.43 g
- An orbital period of 8.325 days
- Semi-major axis 0.0888 AU
- Equilibrium temperature 995 K (722 °C)
- Distance from Earth 464.73 light-years
- Earth Similarity Index 0.159
- Travel time at Voyager 1 speed 8,195,569 years
TOI-837 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#74of 574
top 12.7%
This planet
9.17R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | TOI-837 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 9.17 | 11.21 |
| Mass (M⊕) | 1.00 | 120.46 | 317.83 |
| Density (g/cm³) | 5.51 | 0.89 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.43 | 2.53 |
| Insolation (S⊕) | 1.00 | 164.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 120.457 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 381.396 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
TIC
TIC 460205581
Gaia DR2
Gaia DR2 5251470948229949568
Gaia DR3
Gaia DR3 5251470948229949568
System
TOI-837
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.32 Earth days (2.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0888 AU.
Transit Fingerprint
Depth
0.454 %
Duration
1.983 h
Impact parameter b
0.920
Rp / R★
0.079800
Transit midpoint (BJD)
2,459,356.8140
Photometric dip
Transit produces a flux drop of 4,535 ppm lasting ≈ 1.98 h.
Extended Orbital Architecture
Planet / star radius ratio
0.079800
Semi-major axis / stellar radius
18.160
Impact parameter (b)
0.920
RV semi-amplitude (K)
34.700 m/s
Transit mid-time (BJD)
2,459,356.8140
Long. of periastron (ω)
90.00°
Angular separation (arcsec)
0.62300
Eq. Temperature
995K
(722 °C)
Insolation (S⊕)
164.00
Earth = 1.00
Earth Similarity (ESI)
0.159
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
Bouma et al. 2020Instrument
TESS CCD Array
Publication
2020-11
Observation locale
Space
Discovery cohort
Planets confirmed in 2020 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-837
Spectral Class
F-type yellow-white
Effective Temperature
5,995 K — hotter than the Sun (5,778 K)
Estimated Age
0.04 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.052 R☉
Stellar Mass
1.142 M☉
Metallicity [Fe/H]
0.01
Extended Stellar Properties
Surface gravity (log g)
4.453 dex
Stellar density
1.630 g/cm³
Systemic radial velocity
17.45 km/s
Rotational v·sin i
16.80 km/s
Rotation period
2.97 days
Activity index (log R'HK)
-4.311
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
6.989 mas
Total Proper Motion
21.271 mas/yr
PM Right Ascension
-18.02 mas/yr
PM Declination
11.31 mas/yr
Galactic Cartesian (pc)
x = -0.396 · y = 0.168 · z = -0.903
Equatorial (J2000)
RA 157.03728° · Dec -64.50521°
Galactic ℓ, b
288.264° · -5.795°
Ecliptic λ, β
207.344° · -63.500°
HTM-20 index
591364868
Similar Worlds
HIP 41378 f
Neptune-like · F-type yellow-white
Radius 9.20 R⊕ · 346.7 ly
TOI-622 b
Neptune-like · F-type yellow-white
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HD 332231 b
Neptune-like · F-type yellow-white
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Kepler-51 c
Neptune-like · F-type yellow-white
Radius 9.00 R⊕ · 2,556.5 ly
TOI-1898 b
Neptune-like · F-type yellow-white
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Kepler-1746 b
Neptune-like · F-type yellow-white
Radius 8.94 R⊕ · 3,194.8 ly