55 Cancri
E572580
55 Cancri is a binary star system in the constellation Cancer that is notable for hosting multiple exoplanets, including one of the first known super-Earths.
Observed surface forms (7)
| Surface form | Occurrences |
|---|---|
| 55 Cancri e | 0 |
| 55 Cancri A | 0 |
| 55 Cancri B | 0 |
| 55 Cancri b | 0 |
| 55 Cancri c | 0 |
| 55 Cancri d | 0 |
| 55 Cancri f | 0 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
binary star system
ⓘ
exoplanet ⓘ main-sequence star ⓘ planetary system ⓘ red dwarf star ⓘ |
| age | about 8 billion years ⓘ |
| apparentMagnitudeV | 5.95 ⓘ |
| constellation | Cancer NERFINISHED ⓘ |
| declination | +28° 19′ 51″ ⓘ |
| discoveryMethod |
radial velocity
ⓘ
radial velocity ⓘ |
| discoveryYear |
1996
ⓘ
2004 ⓘ |
| distanceFromEarth |
about 12.6 parsecs
ⓘ
about 41 light-years ⓘ |
| effectiveTemperature | about 5196 K ⓘ |
| hasComponent |
55 Cancri A
NERFINISHED
ⓘ
55 Cancri B NERFINISHED ⓘ |
| hasExoplanet |
55 Cancri b
NERFINISHED
ⓘ
55 Cancri c NERFINISHED ⓘ 55 Cancri d NERFINISHED ⓘ 55 Cancri e NERFINISHED ⓘ 55 Cancri f NERFINISHED ⓘ |
| hostStar | 55 Cancri A NERFINISHED ⓘ |
| mass |
about 0.26 solar masses
ⓘ
about 0.91 solar masses ⓘ about 8 Earth masses ⓘ |
| metallicity[Fe/H] | about +0.31 ⓘ |
| notableFor | hosting one of the first known super-Earth exoplanets ⓘ |
| orbitalPeriod |
about 0.74 days
ⓘ
about 14.65 days ⓘ about 14.65 years ⓘ about 260 days ⓘ about 44.4 days ⓘ |
| otherName |
Copernicus
NERFINISHED
ⓘ
Rho¹ Cancri NERFINISHED ⓘ ρ¹ Cancri NERFINISHED ⓘ |
| planetType |
gas giant
ⓘ
gas giant ⓘ gas giant ⓘ gas giant ⓘ super-Earth ⓘ |
| projectedSeparationFrom55CancriA | about 1065 AU ⓘ |
| radius |
about 0.94 solar radii
ⓘ
about 1.9 Earth radii ⓘ |
| rightAscension | 08h 52m 35.8s ⓘ |
| semiMajorAxis | about 0.0156 AU ⓘ |
| spectralType |
G8V
ⓘ
M4.5V ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.