Confirmed Exoplanet Discovered 2021

Kepler-1750 b

A neptune-like orbiting the g-type yellow (sun-like) Kepler-1750, located approximately 4,883.6 light-years from Earth.

Key parameters at a glance

  • A radius of 6.00 Earth radii
  • A mass of 30.10 Earth masses
  • Surface gravity around 0.83 g
  • An orbital period of 205.912 days
  • Semi-major axis 0.6785 AU
  • Equilibrium temperature 298 K (25 °C)
  • Distance from Earth 4,883.63 light-years
  • Earth Similarity Index 0.514
  • Travel time at Voyager 1 speed 86,122,839 years

Kepler-1750 b Planet Profile

Physical Specs

Radius
6.00 R⊕
Radius (Jupiter)
0.536 R♃
Mass
30.10 M⊕
Mass (Jupiter)
0.095 M♃
Density
0.76 g/cm³
Surface Gravity
0.83 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.514
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

#283of 574

top 49.1%

This planet

6.00R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

Metric Earth Kepler-1750 b Jupiter
Radius (R⊕)1.006.0011.21
Mass (M⊕)1.0030.10317.83
Density (g/cm³)5.510.761.33
Surface Gravity (g)1.000.832.53
Insolation (S⊕)1.001.850.037

Star Catalogue Identifiers

TIC

TIC 424864368

Gaia DR2

Gaia DR2 2129654040463673600

Gaia DR3

Gaia DR3 2129654040463673600

System

Kepler-1750

Percentile among Neptune-like cohort

Radius 6.004 R⊕ · percentile 51 / cohort 574
Mass 30.100 M⊕ · percentile 50 / cohort 574
Orbital period 205.91 d · percentile 89 / cohort 524
Distance 1,497.33 pc · percentile 84 / cohort 572
ESI 0.514 · percentile 93 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period
205.912 days
Semi-major axis
0.6785 AU
Eccentricity
0.000
Inclination
89.93 °

Year Length

A year here lasts approximately 205.91 Earth days (56.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.6785 AU.

Transit Fingerprint

Depth

0.238 %

Duration

9.992 h

Impact parameter b

0.844

Rp / R★

0.044194

Transit midpoint (BJD)

2,455,085.7413

Photometric dip

Transit produces a flux drop of 2,379 ppm lasting ≈ 9.99 h.

Extended Orbital Architecture

Planet / star radius ratio

0.044194

Semi-major axis / stellar radius

161.500

Impact parameter (b)

0.844

Transit mid-time (BJD)

2,455,085.7413

Angular separation (arcsec)

0.45300

Eq. Temperature

298K

(25 °C)

Insolation (S⊕)

1.85

Earth = 1.00

Earth Similarity (ESI)

0.514

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.

Discovery Paper

Primary reference

Valizadegan et al. 2022

Instrument

Kepler CCD Array

Publication

2022-02

Observation locale

Space

Host System: Kepler-1750

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,644 K — cooler than the Sun (5,778 K)

Estimated Age

0.50 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.969 R☉

Stellar Mass

0.981 M☉

Metallicity [Fe/H]

0.14

Extended Stellar Properties

Surface gravity (log g)

4.457 dex

Stellar density

1.879 g/cm³

Metallicity ratio

[Fe/H]

Distance
1,497.33 parsec
Light-years 4,883.63 ly
V-band magnitude
15.70 mag
Voyager-speed travel 86,122,839 yr

Multi-band Host Photometry — 16 bands

9.516.716.66B15.70V15.53Gaia15.53Kepler15.03TESS16.06Sloan g15.47Sloan r15.30Sloan i15.20Sloan z14.33J13.91H13.90K13.88W113.91W213.11W39.48W4

Astrometric Data

Parallax

0.639 mas

Total Proper Motion

3.390 mas/yr

PM Right Ascension

2.82 mas/yr

PM Declination

1.88 mas/yr

Galactic Cartesian (pc)

x = 0.252 · y = -0.613 · z = 0.749

Equatorial (J2000)

RA 292.35149° · Dec 48.51107°

Galactic ℓ, b

80.569° · 14.143°

Ecliptic λ, β

313.637° · 68.590°

HTM-20 index

-693344729

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