Key parameters at a glance
- A radius of 0.87 Earth radii
- A mass of 0.59 Earth masses
- Surface gravity around 0.78 g
- An orbital period of 5.652 days
- Semi-major axis 0.0544 AU
- Equilibrium temperature 856 K (583 °C)
- Distance from Earth 952.74 light-years
- Earth Similarity Index 0.368
- Travel time at Voyager 1 speed 16,801,526 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-1907
Kepler-1907 b 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 |
|---|---|---|---|---|---|---|
| Kepler-1907 b this | Rocky Terrestrial | 0.87 | 0.59 | 5.652 | 856 | 2021 |
| Kepler-1907 c | Rocky Terrestrial | 1.16 | 1.63 | 14.864 | 620 | 2021 |
Kepler-1907 b Planet Profile
Physical Specs
Classification
Planet Type
Rocky Terrestrial
Discovery
Size rank in cohort
Rank by radius
#439of 570
top 76.8%
This planet
0.87R⊕
Rocky Terrestrial median
1.01R⊕
Nearest-size peers
| Metric | Earth | Kepler-1907 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 0.87 | 11.21 |
| Mass (M⊕) | 1.00 | 0.59 | 317.83 |
| Density (g/cm³) | 5.51 | 4.92 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.78 | 2.53 |
| Insolation (S⊕) | 1.00 | 75.00 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 123130285
Gaia DR2
Gaia DR2 2119409512668086656
Gaia DR3
Gaia DR3 2119409512668086656
System
Kepler-1907
Percentile among Rocky Terrestrial cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.65 Earth days (1.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0544 AU.
Transit Fingerprint
Depth
0.013 %
Duration
2.062 h
Impact parameter b
0.147
Rp / R★
0.010086
Transit midpoint (BJD)
2,454,969.9767
Photometric dip
Transit produces a flux drop of 126 ppm lasting ≈ 2.06 h.
Extended Orbital Architecture
Planet / star radius ratio
0.010086
Semi-major axis / stellar radius
21.540
Impact parameter (b)
0.147
Transit mid-time (BJD)
2,454,969.9767
Angular separation (arcsec)
0.18600
Eq. Temperature
856K
(583 °C)
Insolation (S⊕)
75.00
Earth = 1.00
Earth Similarity (ESI)
0.368
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Valizadegan et al. 2022Instrument
Kepler CCD Array
Publication
2022-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2021 at Kepler (12 shown).
Host System: Kepler-1907
Spectral Class
K-type orange
Effective Temperature
5,159 K — cooler than the Sun (5,778 K)
Estimated Age
14.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.800 R☉
Stellar Mass
0.752 M☉
Metallicity [Fe/H]
-0.16
Extended Stellar Properties
Surface gravity (log g)
4.508 dex
Stellar density
0.626 g/cm³
Systemic radial velocity
-15.61 km/s
Rotational v·sin i
4.10 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.394 mas
Total Proper Motion
33.281 mas/yr
PM Right Ascension
4.13 mas/yr
PM Declination
-33.02 mas/yr
Galactic Cartesian (pc)
x = 0.126 · y = -0.666 · z = 0.735
Equatorial (J2000)
RA 280.70858° · Dec 47.32792°
Galactic ℓ, b
76.432° · 20.971°
Ecliptic λ, β
291.567° · 69.967°
HTM-20 index
1974548741
Similar Worlds
Kepler-1152 b
Rocky Terrestrial · K-type orange
Radius 0.87 R⊕ · 702.0 ly
Kepler-607 b
Rocky Terrestrial · K-type orange
Radius 0.87 R⊕ · 1,693.1 ly
K2-209 b
Rocky Terrestrial · K-type orange
Radius 0.87 R⊕ · 249.5 ly
Kepler-102 f
Rocky Terrestrial · K-type orange
Radius 0.86 R⊕ · 351.6 ly
Kepler-290 d
Rocky Terrestrial · K-type orange
Radius 0.86 R⊕ · 2,265.6 ly
Kepler-388 c
Rocky Terrestrial · K-type orange
Radius 0.86 R⊕ · 1,386.2 ly