Key parameters at a glance
- A radius of 1.39 Earth radii
- A mass of 2.51 Earth masses
- Surface gravity around 1.30 g
- An orbital period of 4.044 days
- Semi-major axis 0.0413 AU
- Equilibrium temperature 613 K (340 °C)
- Distance from Earth 721.41 light-years
- Earth Similarity Index 0.503
- Travel time at Voyager 1 speed 12,722,090 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1761 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#938of 1176
top 79.7%
This planet
1.39R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1761 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.39 | 11.21 |
| Mass (M⊕) | 1.00 | 2.51 | 317.83 |
| Density (g/cm³) | 5.51 | 5.12 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.30 | 2.53 |
| Insolation (S⊕) | 1.00 | 33.34 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 48421337
Gaia DR2
Gaia DR2 2131817707546856320
Gaia DR3
Gaia DR3 2131817707546856320
System
Kepler-1761
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.04 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0413 AU.
Transit Fingerprint
Depth
0.042 %
Duration
1.457 h
Impact parameter b
0.154
Rp / R★
0.017623
Transit midpoint (BJD)
2,454,964.6297
Photometric dip
Transit produces a flux drop of 416 ppm lasting ≈ 1.46 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017623
Semi-major axis / stellar radius
4.900
Impact parameter (b)
0.154
Transit mid-time (BJD)
2,454,964.6297
Angular separation (arcsec)
0.18700
Eq. Temperature
613K
(340 °C)
Insolation (S⊕)
33.34
Earth = 1.00
Earth Similarity (ESI)
0.503
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-1761
Spectral Class
K-type orange
Effective Temperature
3,871 K — cooler than the Sun (5,778 K)
Estimated Age
3.90 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.532 R☉
Stellar Mass
0.573 M☉
Metallicity [Fe/H]
0.07
Extended Stellar Properties
Surface gravity (log g)
4.744 dex
Stellar density
0.136 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
4.492 mas
Total Proper Motion
17.652 mas/yr
PM Right Ascension
15.64 mas/yr
PM Declination
8.18 mas/yr
Galactic Cartesian (pc)
x = 0.160 · y = -0.634 · z = 0.756
Equatorial (J2000)
RA 284.13297° · Dec 49.14263°
Galactic ℓ, b
79.038° · 19.387°
Ecliptic λ, β
299.597° · 71.133°
HTM-20 index
1770420569
Similar Worlds
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Super-Earth · K-type orange
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Kepler-386 b
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Kepler-716 c
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