Key parameters at a glance

A radius of 12.41 Earth radii
A mass of 1,373.03 Earth masses
Surface gravity around 8.92 g
An orbital period of 2.879 days
Semi-major axis 0.0413 AU
Equilibrium temperature 1,415 K (1142 °C)
Distance from Earth 1,199.14 light-years
Earth Similarity Index 0.118
Travel time at Voyager 1 speed 21,146,808 years

Qatar-5 b Planet Profile

Physical Specs

Radius

12.41 R⊕

Radius (Jupiter)

1.107 R♃

Mass

1,373.03 M⊕

Mass (Jupiter)

4.320 M♃

Density

3.95 g/cm³

Surface Gravity

8.92 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.118

HZ Position Inner

Controversial No

Discovery

Year 2017

Method Transit

Facility Qatar

Telescope Canon 400mm f/2.8L

Size rank in cohort

Rank by radius

#1297of 1771

top 73.2%

This planet

12.41R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 110014 b 12.40 R⊕ CFBDSIR J145829+101343 b 12.40 R⊕ MOA-2010-BLG-073L b 12.40 R⊕

Metric	Earth	Qatar-5 b	Jupiter
Radius (R⊕)	1.00	12.41	11.21
Mass (M⊕)	1.00	1,373.03	317.83
Density (g/cm³)	5.51	3.95	1.33
Surface Gravity (g)	1.00	8.92	2.53
Insolation (S⊕)	1.00	669.00	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	1,373.026 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 190998418

Gaia DR2

Gaia DR2 382111248777193216

Gaia DR3

Gaia DR3 382111248777193216

System

Qatar-5

Percentile among Gas Giant cohort

Radius 12.408 R⊕ · percentile 27 / cohort 1771

Mass 1,373.026 M⊕ · percentile 73 / cohort 1747

Orbital period 2.88 d · percentile 14 / cohort 1533

Distance 367.66 pc · percentile 67 / cohort 1759

ESI 0.118 · percentile 31 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

2.879 days

Semi-major axis

0.0413 AU

Eccentricity

0.000

Inclination

88.74 °

Year Length

A year here lasts approximately 2.88 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0413 AU.

Transit Fingerprint

Depth

1.126 %

Duration

2.909 h

Impact parameter b

0.180

Rp / R★

0.106100

Transit midpoint (BJD)

2,457,336.7582

Photometric dip

Transit produces a flux drop of 11,260 ppm lasting ≈ 2.91 h.

Extended Orbital Architecture

Planet / star radius ratio

0.106100

Semi-major axis / stellar radius

8.270

Impact parameter (b)

0.180

RV semi-amplitude (K)

568.000 m/s

Transit mid-time (BJD)

2,457,336.7582

Angular separation (arcsec)

0.11200

Eq. Temperature

1,415K

(1142 °C)

Insolation (S⊕)

669.00

Earth = 1.00

Earth Similarity (ESI)

0.118

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. 2017

Instrument

FLI ProLine 4K CCD Sensor

Publication

2017-04

Observation locale

Ground

Discovery cohort

Planets confirmed in 2017 at Qatar (3 shown).

Qatar-6 b · Gas Giant Qatar-4 b · Gas Giant Qatar-3 b · Gas Giant

Host System: Qatar-5

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,747 K — cooler than the Sun (5,778 K)

Estimated Age

0.53 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.076 R☉

Stellar Mass

1.128 M☉

Metallicity [Fe/H]

0.38

Extended Stellar Properties

Surface gravity (log g)

4.427 dex

Stellar density

1.286 g/cm³

Systemic radial velocity

-9.54 km/s

Rotational v·sin i

4.50 km/s

Rotation period

12.10 days

Metallicity ratio

[Fe/H]

Distance

367.66 parsec

Light-years 1,199.14 ly

V-band magnitude

12.61 mag

Voyager-speed travel 21,146,808 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

2.693 mas

Total Proper Motion

6.573 mas/yr

PM Right Ascension

0.92 mas/yr

PM Declination

-6.51 mas/yr

Galactic Cartesian (pc)

x = 0.737 · y = 0.091 · z = 0.670

Equatorial (J2000)

RA 7.05394° · Dec 42.06135°

Galactic ℓ, b

118.330° · -20.603°

Ecliptic λ, β

25.413° · 35.337°

HTM-20 index

1967088211