• Welcome to the new COTI server. We've moved the Citizens to a new server. Please let us know in the COTI Website issue forum if you find any problems.

TRAPPIST-1 system

Something I wrote elsewhere,

So, for some fun here's my interpretation for a Traveller system Trappist-1. I used the information on Wikipedia including the illustrations for the planets. There are no gas giants or planetoid belts and the seven planets have orbits similar to satellites around Jupiter. Their orbits are all below Orbit 0 in most Traveller editions. Each entry includes the planet designation, distance from Trappist-1 in AUs, orbit period in days, planet radius and mass relative to Earth and their UWP code.

Trappist- 1b: 0.011, 1.51, 1.09, 0.85, X800000-0
Trappist- 1c: 2.42, 0.015, 1.06, 1.38, X811000-0
Trappist- 1d: 4.05, 0.021, 0.77, 0.41, X552000-0
Trappist- 1e: 6.10, 0.028, 0.92, 0.62, X767000-0
Trappist- 1f: 9.21, 0.037, 1.04, 0.68, X864000-0
Trappist- 1g: 12.35, 0.045, 1.13, 1.34, X986000-0
Trappist- 1h: 20.00, 0.06, 0.76, ----, X531000-0

Extreme interpretation that throws out real world evidence such as the Extreme UV radiation but Traveller never truly worries for a good space opera adventure... except maybe MegaTraveller.

Those planets are close and moving fast, folks. Standing on any of them gives a show of worlds with apparent diameters bigger than Luna whizzing past regularly. Trappist-1 could be considered a subject for Referees Briefing 2: Anomalies and Wonders.

For a break to the 2300 crowd, I worked out some extended world characteristics from the Tools for Frontier Living for determining settlement likelihood. The parameters are Biosphere (aggregate mass of all life 1 x 10 to the die roll millions of tons), Biodiversity (number of species in millions), Biocomplexity (structural complexity of the organisms from single cell only to hive minds dominant) summed up as the Biosphere, the average of the three. In addition to this is Compatibility(how different are comparable lifeforms), Natural resources (exploitable and Habitability (comfortable for humans based on Earth as a 10)

Trappist-1b With no atmosphere or water, this world is a tided locked dead ball with no life characteristics and Habitability 0 but has Natural Resource 5
Trappist-1c 0/ 1/ 1/ 0.67// 14/ 8/ 0 Has a trace of very simple life highly compatible to Earth life.
Trappist-1d 2/ 3/ 1/ 3.33// 12/ 8/ 9
Trappist-1e 8/ 7/ 7/ 7.14// 8/ 7/ 7 Tens of trillions of tons of diverse species with some having social/hive forms compatible with Earth life.
Trappist-1f 4/ 4/ 7/ 5.00// 9/ 9/ 9
Trappist-1g 9/ 9/ 7/ 8.33// 10/ 12/ 6 Quadrillions of tons of teeming species with some having social/hive forms compatible with Earth life.
Trappist-1h 2/ 1/ 3/ 2.00// 8/ 0/ 3
 
Back
Top