Temperature
5013 K
4742.0 to 5013
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Stellar HostProfile
Qatar-1
Unclassified star • 185.6 pc
Records
11
literature rows
Planets
1
system count
References
12
distinct source labels
TIC: TIC 236887394
Approximate color
from effective temperature
Canonical Summary
Adopted host values from one source row
Values come from the row with the most populated summary measurements. Missing values stay missing. Ranges and counts describe all source rows.
Stellar source: Collins et al. 2017 • System source: TICv8
Mass
0.84 Msun
0.80 to 0.85
Radius
0.80 Rsun
0.77 to 0.83
Luminosity
-0.44 log(Lsun)
-0.51 to -0.44
Distance
185.6 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.80 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
Qatar-1
0.80 R☉
System Layout
Known planets
1 planets linked to this host
Qatar-1 b
Transit
◌
Discovery
2010
Period
1.42 days
Radius
12.81 R⊕
Mass
411.3 M⊕
Eq. Temp
1418 K
Qatar-1 and Its Jupiter-like Planet
Qatar-1 is a star 605 light-years away with one known planet. The star has a mass of 0.838 solar masses and a radius of 0.803 solar radii, both smaller than the Sun's corresponding values. Its temperature is 5010 K, cooler than the Sun's.
The planet Qatar-1 b is Jupiter-like, discovered by transit in 2010. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. Qatar-1 b has a mass of 411 Earth masses, which is larger than Earth's and roughly 1.29 times Jupiter's mass. Its radius is 12.8 Earth radii, larger than Earth's, and its mean density is 1.08 g/cm³, 0.196 times Earth's. Qatar-1 b completes an orbit in 1.42 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
11
Stellar refs
11
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 4910 | — | 0.80 | — | — | — | 185.6 | Cruz et al. 2016 | TICv8 |
| 4910 | — | — | 2.70 | — | — | 185.6 | von Essen et al. 2017 | TICv8 |
| 4910 | 0.82 | 0.80 | 1.19 | — | — | 185.6 | Mislis et al. 2015 | TICv8 |
| 4910 | 0.85 | 0.80 | 11.60 | — | — | 185.6 | Bonomo et al. 2017 | TICv8 |
| — | 0.80 | 0.78 | 9.80 | — | — | 185.6 | Maciejewski et al. 2015 | TICv8 |
| 4910 | 0.80 | 0.77 | — | -0.51 | — | 185.6 | TICv8 | TICv8 |
| 4910 | 0.85 | 0.80 | 4.50 | — | — | 185.6 | Covino et al. 2013 | TICv8 |
| 4861 | 0.85 | 0.82 | — | — | — | 185.6 | Alsubai et al. 2011 | TICv8 |
| 5013 | 0.84 | 0.80 | — | -0.44 | — | 185.6 | Collins et al. 2017 | TICv8 |
| 4742.0 | — | 0.83 | — | -0.51 | — | 185.6 | Gaia DR2 | TICv8 |
| 4910 | — | 0.77 | — | — | — | 185.6 | ExoFOP | TICv8 |