Key parameters at a glance

A radius of 19.06 Earth radii
A mass of 597.52 Earth masses
Surface gravity around 1.65 g
An orbital period of 2.032 days
Semi-major axis 0.0352 AU
Equilibrium temperature 2,053 K (1780 °C)
Distance from Earth 2,302.60 light-years
Earth Similarity Index 0.051
Travel time at Voyager 1 speed 40,606,338 years

Qatar-7 b Planet Profile

Physical Specs

Radius

19.06 R⊕

Radius (Jupiter)

1.700 R♃

Mass

597.52 M⊕

Mass (Jupiter)

1.880 M♃

Density

0.50 g/cm³

Surface Gravity

1.65 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.051

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

#43of 1771

top 2.4%

This planet

19.06R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

KELT-4 A b 19.04 R⊕ HAT-P-64 b 19.09 R⊕ TOI-615 b 18.98 R⊕

Metric	Earth	Qatar-7 b	Jupiter
Radius (R⊕)	1.00	19.06	11.21
Mass (M⊕)	1.00	597.52	317.83
Density (g/cm³)	5.51	0.50	1.33
Surface Gravity (g)	1.00	1.65	2.53
Insolation (S⊕)	1.00	2,886.29	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	597.520 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 291685334

Gaia DR2

Gaia DR2 2878923523472328704

Gaia DR3

Gaia DR3 2878923523472328704

System

Qatar-7

Percentile among Gas Giant cohort

Radius 19.055 R⊕ · percentile 98 / cohort 1771

Mass 597.520 M⊕ · percentile 53 / cohort 1747

Orbital period 2.03 d · percentile 7 / cohort 1533

Distance 705.98 pc · percentile 81 / cohort 1759

ESI 0.051 · percentile 5 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

2.032 days

Semi-major axis

0.0352 AU

Eccentricity

0.000

Inclination

89.00 °

Year Length

A year here lasts approximately 2.03 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0352 AU.

Transit Fingerprint

Depth

1.227 %

Duration

3.578 h

Impact parameter b

0.080

Rp / R★

0.110000

Transit midpoint (BJD)

2,458,043.3208

Photometric dip

Transit produces a flux drop of 12,273 ppm lasting ≈ 3.58 h.

Extended Orbital Architecture

Planet / star radius ratio

0.110000

Semi-major axis / stellar radius

4.840

Impact parameter (b)

0.080

RV semi-amplitude (K)

239.000 m/s

Transit mid-time (BJD)

2,458,043.3208

Angular separation (arcsec)

0.04990

Eq. Temperature

2,053K

(1780 °C)

Insolation (S⊕)

2,886.29

Earth = 1.00

Earth Similarity (ESI)

0.051

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

2019-02

Observation locale

Ground

Discovery cohort

Planets confirmed in 2019 at Qatar (3 shown).

Qatar-9 b · Gas Giant Qatar-8 b · Gas Giant Qatar-10 b · Gas Giant

Host System: Qatar-7

Spectral Class

F-type yellow-white

Effective Temperature

6,387 K — hotter than the Sun (5,778 K)

Estimated Age

1.69 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.564 R☉

Stellar Mass

1.409 M☉

Metallicity [Fe/H]

0.28

Extended Stellar Properties

Surface gravity (log g)

4.196 dex

Stellar density

0.521 g/cm³

Systemic radial velocity

-4.70 km/s

Rotational v·sin i

13.80 km/s

Rotation period

5.90 days

Metallicity ratio

[Fe/H]

Distance

705.98 parsec

Light-years 2,302.60 ly

V-band magnitude

13.13 mag

Voyager-speed travel 40,606,338 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.388 mas

Total Proper Motion

5.310 mas/yr

PM Right Ascension

-5.19 mas/yr

PM Declination

-1.13 mas/yr

Galactic Cartesian (pc)

x = 0.798 · y = -0.021 · z = 0.602

Equatorial (J2000)

RA 358.51513° · Dec 37.02182°

Galactic ℓ, b

110.382° · -24.448°

Ecliptic λ, β

15.442° · 34.102°

HTM-20 index

1756763276