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40 Eridani
Galactography > Regions of Space > Inner Sphere
Galactography > Systems and Worlds > Systems & Worlds 0 - 9
Galactography > Systems and Worlds > Systems & Worlds 0 - 9
 Image from Steve Bowers | |
| The three stars of 40 Eridani, as seen from near Keid C; Bottom, Keid A, Centre the white dwarf Keid B, Top, the small red dwarf , Keid C | |
40 Eridani, a Triple Star System (Keid A, Keid B and Keid C, and the world Twilight) | |
| System | 40 Eridani, also known as Keid, or the Twilight System) |
|---|---|
| Primary | Keid A, also known as 40 Eridani A, Omicron2 Eridani A |
| Stellar Type | K1V |
| Luminosity | 0.365 x Sol |
| Location | 16.4 ly from Sol, constellation Eridanus |
| Companions | Keid B: White dwarf, luminosity 0.004 x Sol, orbits 400 AU from Keid A Keid C: Red dwarf, luminosity 0.0007 x Sol, orbits 35 AU from Keid B |
 Image from Steve Bowers | |
| Eltoo, a colony located in the L2 point of 40 Eridani Ab, showing the planet and the star as seen from this location. The superterrestrial planet Dawn appears smaller than the star, so that a ring of sunlight is always visible. | |
Planets orbiting 40 Eridani A | |
| Dawn | Mass 8.47 x Earth Semimajor Axis 0.224 AU Diameter 23440km Density 7.5g/cm3 Type Superterrestrial. Surface Temperature 870K Gravity 2.52 gees Atmosphere H2, CO2, He, N2 Escape velocity 24km/s Several colonies in orbit, notably at the L2 Lagrange point Distance to L2 point 730905km (originally known as 40 Eridani Ab) |
|---|---|
| Twilight | Type Vesperian class (tidally locked) world with small indigenous biosphere, now partially terraformed. Diameter 14,470km Orbit 0.89 AU Surface gravity 1.14 gees Escape velocity 12.7 km/s Affiliation Former member of Eridanus League, now NoCoZo. More details here |
| Umbra | Planetoid class. Diameter 2090km: Orbit 1.42 AU |
| Shadows | (formerly 40 Eridani III) Jovian Class. Diameter 10800km: Orbit 3.51 AU Moon of Shadows Orson, 2090km (this colony greatly expanded during the Second Federation era with an influx of low gravity tweaks |
Keid B and Keid C | |
| B and C | This red dwarf/white dwarf pair have major Sephirotic Intelligent Super Object (ISO) installations in orbit around them, affiliated to the NoCoZo and the Communion of Worlds |
|---|---|
| Wormholes | Gilgamesh, to Epsilon Eridani |
This triple system near Sol is known variously as Keid, Omicron2 Eridani or 40 Eridani. The first wave of colonists were refugees from the Technocalypse who arrived in 789 in arkships built by GAIA. Most colonists settled on Twilight, but a smaller fraction established colonies on Umbra and Orson, and in the L2 Lagrange point of Dawn.
The colonies joined the Eridanus League soon after they received the famous Charter Transmission.
The original colonists were joined by a fleet organised by TakiCo which arrived in 1100. The Keid colony became very pro-League and only a few fringe threshold bases in the outer system dissented from continued League membership. Etodist, Mondecumen, and FalunDafa missionaries were not as successful here as on other League worlds due to the prevalence of animist beliefs.
Twilight, which already had a limited xenoecology when discovered, became an important Inner Sphere world after the fall of the Eridanus League. See also the separate article on Twilight here.
 Image from Steve Bowers | |
| Shadows, a small gas giant orbiting 40 Eridani A, and its moon Orson | |
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Development Notes
Text by Aaron Hamilton
Updated by Steve Bowers 2018
Initially published on 31 July 2000.
Updated by Steve Bowers 2018
Initially published on 31 July 2000.
