ExoplanetDetail

Qatar-9 b

Host star Qatar-9 • 11.31 R⊕ • 1.54 d orbit

Records

archive rows

Discovery

2019

Transit

Radius

11.31 R⊕

default parameter set

Mass

378.2 M⊕

default parameter set

Qatar-9

1134 K equilibrium

Selected source: Alsubai et al. 2019

Host Star

Qatar-9

Stable across source rows

Qatar-9

Discovery Method

Transit

Consistent across records

Transit (4)

Discovery Year

2019

Stable across source rows

2019

Orbital Period

1.54 day

1.54 to 1.54

4 values • 4 distinct

Semi-Major Axis

0.02 au

single adopted value

1 values • 1 distinct

Radius

11.31 Rearth

11.31 to 13.37

2 values • 2 distinct

Mass

378.2 Mearth

single adopted value

1 values • 1 distinct

Density

1.43 g/cm**3

single adopted value

1 values • 1 distinct

Equilibrium Temperature

1134 K

1061 to 1134

2 values • 2 distinct

Earth

1.0 R⊕ baseline

Qatar-9 b

11.31 R⊕

Jupiter

11.2 R⊕ reference

Evidence Summary

Rows

Refs

Methods

Discoverystable

4 values • 1 distinct

Facilitystable

4 values • 1 distinct

Periodstable

4 values • 1 distinct

Radiusdisputed

2 values • 2 distinct

Massstable

1 values • 1 distinct

Eq. Tempdisputed

2 values • 2 distinct

Year	Method	Facility	Telescope	Period	Radius	Mass	Eq. Temp	Reference
2019	Transit	Qatar	Canon 400mm f/2.8L	1.54 day	11.31 Rearth	378.2 Mearth	1134 K	Alsubai et al. 2019
2019	Transit	Qatar	Canon 400mm f/2.8L	1.54 day	—	—	—	Ivshina & Winn 2022
2019	Transit	Qatar	Canon 400mm f/2.8L	1.54 day	—	—	—	Kokori et al. 2023
2019	Transit	Qatar	Canon 400mm f/2.8L	1.54 day	13.37 Rearth	—	1061 K	ExoFOP

Qatar-9 b

Adopted planet values from the default parameter set

Radius against familiar reference worlds

Underlying measurements and references