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{{Night Sky
| image =
| designation =Rho<sup>1</sup> Cancri<br/>HD 75732
| rightascension =Star A: 08<sup>h</sup> 52<sup>m</sup> 35.81<sup>s</sup><br/>Star B: 08<sup>h</sup> 52<sup>m</sup> 40.9<sup>s</sup>
| declination =Star A: +28<sup>o</sup> 19′ 51.0″<br/>Star B: +28<sup>o</sup> 19′ 59″
| distance =40.3 ±0.4 ly
| constellation =[[Cancer_(constellation)|Cancer]]
| type =[[Binary star]]
| dimensions =
| magnitude =Star A: Apparent mag: 5.95 Absolute Mag:5.46<br/>Star B: Apparent mag: 13.15 Absolute Mag: 12.66
| redshift =
| radvelocity =27.3 km/s
| propmotion =RA: -485.80 ±0.97 mas/yr<br/>Dec.: -234.05 ±0.68 mas/yr
| parallax =81.03 ±0.75 mas
}}
'''55 Cancri''', also known as '''Rho Cancri''', is a binary star system located 41 [[light year|light years]] away in the constellation of [[Cancer_(zodiac)|Cancer]] and is best known for having five [[extrasolar planets]] (as of 2007), including possibly one terrestrial, rocky, "super-Earth". 55 Cancri A is visible to the unaided eye only under very dark, clear conditions with an apparent magnitude of 5.95. The much dimmer 55 Cancri B's apparent magnitude is only 13.15 and is invisible to the unaided eye.
'''55 Cancri''', also known as '''Rho Cancri''', is a binary star system located 41 [[light year|light years]] away in the constellation of [[Cancer_(zodiac)|Cancer]] and is best known for having five [[extrasolar planets]] (as of 2007), including possibly one terrestrial, rocky, "super-Earth". 55 Cancri A is visible to the unaided eye only under very dark, clear conditions with an apparent magnitude of 5.95. The much dimmer 55 Cancri B's apparent magnitude is only 13.15 and is invisible to the unaided eye.