Key parameters at a glance

A radius of 17.30 Earth radii
A mass of 233.92 Earth masses
Surface gravity around 0.78 g
An orbital period of 1.645 days
Semi-major axis 0.0286 AU
Equilibrium temperature 1,955 K (1682 °C)
Distance from Earth 1,823.43 light-years
Earth Similarity Index 0.049
Travel time at Voyager 1 speed 32,156,254 years

Qatar-10 b Planet Profile

Physical Specs

Radius

17.30 R⊕

Radius (Jupiter)

1.543 R♃

Mass

233.92 M⊕

Mass (Jupiter)

0.736 M♃

Density

0.25 g/cm³

Surface Gravity

0.78 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.049

HZ Position Inner

Controversial No

Discovery

Year 2019

Method Transit

Facility Qatar

Telescope Canon 400mm f/2.8L

Size rank in cohort

Rank by radius

#100of 1771

top 5.6%

This planet

17.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 202772 A b 17.32 R⊕ TIC 257060897 b 17.26 R⊕ TOI-2796 b 17.26 R⊕

Metric	Earth	Qatar-10 b	Jupiter
Radius (R⊕)	1.00	17.30	11.21
Mass (M⊕)	1.00	233.92	317.83
Density (g/cm³)	5.51	0.25	1.33
Surface Gravity (g)	1.00	0.78	2.53
Insolation (S⊕)	1.00	1,816.48	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	233.923 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 229791084

Gaia DR2

Gaia DR2 2262322556576778752

Gaia DR3

Gaia DR3 2262322556576778752

System

Qatar-10

Percentile among Gas Giant cohort

Radius 17.295 R⊕ · percentile 94 / cohort 1771

Mass 233.923 M⊕ · percentile 25 / cohort 1747

Orbital period 1.65 d · percentile 4 / cohort 1533

Distance 559.07 pc · percentile 77 / cohort 1759

ESI 0.049 · percentile 4 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

1.645 days

Semi-major axis

0.0286 AU

Eccentricity

0.000

Inclination

85.87 °

Year Length

A year here lasts approximately 1.65 Earth days (0.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0286 AU.

Transit Fingerprint

Depth

1.931 %

Duration

2.772 h

Impact parameter b

0.379

Rp / R★

0.126500

Transit midpoint (BJD)

2,458,247.9075

Photometric dip

Transit produces a flux drop of 19,310 ppm lasting ≈ 2.77 h.

Extended Orbital Architecture

Planet / star radius ratio

0.126500

Semi-major axis / stellar radius

4.900

Impact parameter (b)

0.379

RV semi-amplitude (K)

114.000 m/s

Transit mid-time (BJD)

2,458,247.9075

Angular separation (arcsec)

0.05120

Eq. Temperature

1,955K

(1682 °C)

Insolation (S⊕)

1,816.48

Earth = 1.00

Earth Similarity (ESI)

0.049

0 = alien, 1 = Earth-identical

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

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Radial velocity

Stellar wobble has been measured spectroscopically.

Discovery Paper

Primary reference

Alsubai et al. 2019

Instrument

FLI ProLine 4K CCD Sensor

Publication

2019-06

Observation locale

Ground

Discovery cohort

Planets confirmed in 2019 at Qatar (3 shown).

Qatar-9 b · Gas Giant Qatar-8 b · Gas Giant Qatar-7 b · Gas Giant

Host System: Qatar-10

Spectral Class

F-type yellow-white

Effective Temperature

6,124 K — hotter than the Sun (5,778 K)

Estimated Age

3.20 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.254 R☉

Stellar Mass

1.156 M☉

Metallicity [Fe/H]

0.02

Extended Stellar Properties

Surface gravity (log g)

4.303 dex

Stellar density

0.823 g/cm³

Systemic radial velocity

-25.49 km/s

Rotational v·sin i

5.90 km/s

Metallicity ratio

[Fe/H]

Distance

559.07 parsec

Light-years 1,823.43 ly

V-band magnitude

12.87 mag

Voyager-speed travel 32,156,254 yr

Multi-band Host Photometry — 14 bands

Astrometric Data

Parallax

1.760 mas

Total Proper Motion

6.516 mas/yr

PM Right Ascension

-5.58 mas/yr

PM Declination

-3.37 mas/yr

Galactic Cartesian (pc)

x = 0.087 · y = -0.338 · z = 0.937

Equatorial (J2000)

RA 284.44391° · Dec 69.57084°

Galactic ℓ, b

100.337° · 24.753°

Ecliptic λ, β

35.728° · 83.843°

HTM-20 index

-1422038597