Confirmed Exoplanet Discovered 2021

Kepler-501 c

A super-earth orbiting the g-type yellow (sun-like) Kepler-501, located approximately 3,670.0 light-years from Earth.

Key parameters at a glance

  • A radius of 1.68 Earth radii
  • A mass of 3.47 Earth masses
  • Surface gravity around 1.23 g
  • An orbital period of 3.623 days
  • Semi-major axis 0.0467 AU
  • Equilibrium temperature 1,304 K (1031 °C)
  • Distance from Earth 3,670.04 light-years
  • Earth Similarity Index 0.214
  • Travel time at Voyager 1 speed 64,721,113 years

1 sibling around Kepler-501

Kepler-501 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
Kepler-501 c this Super-Earth 1.68 3.47 3.623 1,304 2021
Kepler-501 b Neptune-like 4.30 17.10 5.641 1,125 2016

Kepler-501 c Planet Profile

Physical Specs

Radius
1.68 R⊕
Radius (Jupiter)
0.150 R♃
Mass
3.47 M⊕
Mass (Jupiter)
0.011 M♃
Density
4.01 g/cm³
Surface Gravity
1.23 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.214
HZ Position Inner
Controversial No

Discovery

Year 2021
Method Transit
Facility Kepler
Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#433of 1176

top 36.7%

This planet

1.68R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Metric Earth Kepler-501 c Jupiter
Radius (R⊕)1.001.6811.21
Mass (M⊕)1.003.47317.83
Density (g/cm³)5.514.011.33
Surface Gravity (g)1.001.232.53
Insolation (S⊕)1.00683.840.037

Star Catalogue Identifiers

TIC

TIC 169176340

Gaia DR2

Gaia DR2 2076943796633684352

Gaia DR3

Gaia DR3 2076943796633684352

System

Kepler-501

Percentile among Super-Earth cohort

Radius 1.681 R⊕ · percentile 63 / cohort 1176
Mass 3.470 M⊕ · percentile 57 / cohort 1176
Orbital period 3.62 d · percentile 27 / cohort 1164
Distance 1,125.24 pc · percentile 87 / cohort 1171
ESI 0.214 · percentile 16 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period
3.623 days
Semi-major axis
0.0467 AU
Eccentricity
0.000
Inclination
89.96 °

Year Length

A year here lasts approximately 3.62 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0467 AU.

Transit Fingerprint

Depth

0.018 %

Duration

2.787 h

Impact parameter b

0.750

Rp / R★

0.012192

Transit midpoint (BJD)

2,454,965.9927

Photometric dip

Transit produces a flux drop of 181 ppm lasting ≈ 2.79 h.

Extended Orbital Architecture

Planet / star radius ratio

0.012192

Semi-major axis / stellar radius

10.069

Impact parameter (b)

0.750

Transit mid-time (BJD)

2,454,965.9927

Angular separation (arcsec)

0.04150

Eq. Temperature

1,304K

(1031 °C)

Insolation (S⊕)

683.84

Earth = 1.00

Earth Similarity (ESI)

0.214

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Discovery Paper

Primary reference

Valizadegan et al. 2022

Instrument

Kepler CCD Array

Publication

2022-02

Observation locale

Space

Host System: Kepler-501

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,794 K — hotter than the Sun (5,778 K)

Estimated Age

0.30 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.216 R☉

Stellar Mass

1.032 M☉

Metallicity [Fe/H]

0.14

Extended Stellar Properties

Surface gravity (log g)

4.282 dex

Stellar density

1.471 g/cm³

Metallicity ratio

[Fe/H]

Distance
1,125.24 parsec
Light-years 3,670.04 ly
V-band magnitude
14.89 mag
Voyager-speed travel 64,721,113 yr

Multi-band Host Photometry — 16 bands

9.415.315.29B14.89V14.73Gaia14.76Kepler14.27TESS15.20Sloan g14.72Sloan r14.57Sloan i14.52Sloan z13.66J13.27H13.34K12.88W112.98W212.64W39.35W4

Astrometric Data

Parallax

0.860 mas

Total Proper Motion

10.314 mas/yr

PM Right Ascension

-6.19 mas/yr

PM Declination

-8.25 mas/yr

Galactic Cartesian (pc)

x = 0.341 · y = -0.664 · z = 0.666

Equatorial (J2000)

RA 297.20149° · Dec 41.73015°

Galactic ℓ, b

76.036° · 7.989°

Ecliptic λ, β

314.740° · 61.012°

HTM-20 index

-811032594

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