Rho Cancri
E572581
M-type main-sequence star
binary star system
exoplanet
exoplanet host star system
main-sequence star
planetary system
red dwarf star
super-Earth
Rho Cancri, also known as 55 Cancri, is a binary star system in the constellation Cancer that is famous for hosting a multi-planet exoplanetary system.
Observed surface forms (6)
| Surface form | Occurrences |
|---|---|
| 55 Cancri planetary system | 0 |
| 55 Cancri A | 0 |
| 55 Cancri B | 0 |
| 55 Cancri e | 0 |
| 55 Cancri b | 0 |
| 55 Cancri d | 0 |
Statements (54)
| Predicate | Object |
|---|---|
| instanceOf |
M-type main-sequence star
ⓘ
binary star system ⓘ exoplanet ⓘ exoplanet host star system ⓘ main-sequence star ⓘ planetary system ⓘ red dwarf star ⓘ super-Earth ⓘ |
| alsoKnownAs |
55 Cancri
NERFINISHED
ⓘ
55 Cnc NERFINISHED ⓘ Rho Cnc NERFINISHED ⓘ ρ Cancri NERFINISHED ⓘ |
| discoveredBy |
radial velocity method
ⓘ
radial velocity method ⓘ |
| discoveryYear |
1996
ⓘ
2004 ⓘ |
| hasAge_Gyr | about 8 ⓘ |
| hasApparentMagnitudeV | 5.95 ⓘ |
| hasBayerDesignation | ρ Cancri NERFINISHED ⓘ |
| hasComponent |
55 Cancri A
NERFINISHED
ⓘ
55 Cancri B NERFINISHED ⓘ |
| hasDeclination | +28° 19′ 51″ ⓘ |
| hasDistanceFromEarth_ly | about 41 ⓘ |
| hasDistanceFromEarth_pc | about 12.6 ⓘ |
| hasEffectiveTemperature_K | about 5250 ⓘ |
| hasExoplanetarySystem | 55 Cancri planetary system NERFINISHED ⓘ |
| hasFlamsteedDesignation | 55 Cancri NERFINISHED ⓘ |
| hasHenryDraperDesignation | HD 75732 NERFINISHED ⓘ |
| hasHipparcosDesignation | HIP 43587 NERFINISHED ⓘ |
| hasHRDesignation | HR 3522 NERFINISHED ⓘ |
| hasMass_solarMass |
about 0.26
ⓘ
about 0.9 ⓘ |
| hasMetallicity_[Fe/H] | about +0.3 ⓘ |
| hasNumberOfConfirmedPlanets | 5 ⓘ |
| hasNumberOfStars | 2 ⓘ |
| hasPlanet |
55 Cancri b
NERFINISHED
ⓘ
55 Cancri c NERFINISHED ⓘ 55 Cancri d NERFINISHED ⓘ 55 Cancri e NERFINISHED ⓘ 55 Cancri f NERFINISHED ⓘ |
| hasPrimaryStar | 55 Cancri A NERFINISHED ⓘ |
| hasRadius_solarRadius | about 0.94 ⓘ |
| hasRightAscension | 08h 52m 35.8s ⓘ |
| hasSecondaryStar | 55 Cancri B NERFINISHED ⓘ |
| hasSpectralType |
G8V
ⓘ
G8V + M4V ⓘ M4V ⓘ |
| hostStar | 55 Cancri A NERFINISHED ⓘ |
| isNotableFor | hosting a multi-planet exoplanetary system ⓘ |
| isVisibleToNakedEye | true ⓘ |
| locatedInConstellation | Cancer NERFINISHED ⓘ |
| orbitalPeriod_days | about 0.74 ⓘ |
| orbitalPeriod_years | about 14.7 ⓘ |
| orbitsCommonBarycenterWith | 55 Cancri A NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.