Temperature
3904 K
3904 to 4134.3
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Stellar HostProfile
RR Cae
Unclassified star • 21.19 pc
Records
3
literature rows
Planets
1
system count
References
4
distinct source labels
TIC: TIC 219244444
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: TICv8 • System source: TICv8
Mass
0.16 Msun
0.16 to 0.44
Radius
0.19 Rsun
single adopted value
Luminosity
-2.11 log(Lsun)
single adopted value
Distance
21.19 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.19 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
RR Cae
0.19 R☉
System Layout
Known planets
1 planets linked to this host
RR Cae b
Eclipse Timing Variations
◌
Discovery
2012
Period
4343.5 days
Radius
—
Mass
1334.9 M⊕
Eq. Temp
—
RR Cae b: A Circumbinary World Around a Cool Red Dwarf
RR Cae is a binary star system 69.1 light-years away. Its host star is an M-type dwarf with a mass of 0.162 solar masses, a radius of 0.193 solar radii, and a temperature of 3900 K, making it smaller, less massive, and cooler than the Sun. One planet is known to orbit this host.
That planet, RR Cae b, is circumbinary, meaning it orbits both stars of the binary system rather than one star alone. It was discovered in 2012 through Eclipse Timing Variations. Its minimum mass is 1330 Earth masses, roughly 4.2 times Jupiter's mass and larger than Earth's, and it completes one orbit every 4340 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Stellar refs
3
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusstable
Luminositystable
Surface Gravitystable
Spectral Typestable