System: Eta Cephei - All bodies
Distance to Sol: 46.54 ly
Spectral Class: Y5 V - Not Scoopable
Distance To Arrival: 2,484 ls
Luminosity Class: V - Main-sequence star (dwarf)
Age: 2,696 Million years
Solar Masses: 0.0117
Solar Radius: 0.0564
Surface Temperature: 346 K
Orbital Period: 332.6 D
Semi Major Axis: 0.00 AU
Orbital Eccentricity: 0.1038
Orbital Inclination: 1.57 °
Arg Of Periapsis: 0.43 °
Absolute Magnitude: 23.0158
HIP ID: 102422
HD ID: 198149
Attractions: None

Class Y dwarfs are the coolest of the brown dwarfs. Surface temperatures are less than 700 K, and are effectively very large gas giant planets, with some stellar properties.

The term dwarf star refers to a variety of distinct classes of stars. The term was originally coined in 1906 when the Danish astronomer Ejnar Hertzsprung noticed that the reddest stars - classified as K and M in the Harvard scheme - could be divided into two distinct groups. They are either much brighter than the Sun, or much fainter. To distinguish these groups, he called them "giant" and "dwarf" stars, the dwarf stars being fainter and the giants being brighter than the sun.

Rings - Reserve Depleted
  Ring Type Mass Semi Major Axis Inner Radius Outer Radius  
Eta Cephei 5 A Ring Metallic 386,550,000,000.00 MT ? 106,820 KM 154,380 KM
Eta Cephei 5 B Ring Rocky 9,998,700,000,000.00 MT ? 154,480 KM 587,530 KM