Temperature
5592 K
5592 to 5802
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Stellar HostProfile
TOI-1221
Unclassified star • 138.4 pc
Records
3
literature rows
Planets
1
system count
References
4
distinct source labels
TIC: TIC 349095149
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: Mann et al. 2023 • System source: TICv8
Mass
0.93 Msun
0.93 to 1.01
Radius
1.03 Rsun
1.02 to 1.03
Age
10 Gyr
single adopted value
Distance
138.4 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.03 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
TOI-1221
1.03 R☉
System Layout
Known planets
1 planets linked to this host
TOI-1221 b
Transit
◌
Discovery
2023
Period
91.68 days
Radius
2.91 R⊕
Mass
1112.4 M⊕
Eq. Temp
440 K
TOI-1221 b: A Neptune-Like Planet Orbiting a Distant Star
TOI-1221 is a star located 451 light-years from Earth. It is older than the Sun, with an age of 10 billion years, and has 0.93 solar masses and 1.03 solar radii, making its reported radius estimate larger than the Sun's. Its temperature of 5590 K is cooler than the Sun's. One planet orbits this host.
TOI-1221 b is a Neptune-like planet discovered by the transit method in 2023. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. The planet completes one orbit every 91.7 days. Its radius is 2.91 Earth radii, larger than Earth's. Neptune-like planets reach 4 times Earth's radius. Its mass is reported as an upper limit of 1112.3994245 Earth masses.
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Stellar refs
3
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositystable
Surface Gravitydisputed
Metallicitystable