To make matters complicated, each star in a galaxy may have several planets orbiting it. Each planet in turn may have satellites and rings. Space, and its variety, is indeed infinite; STAR FRONTIERS should be a celebration of this variety.
The procedure detailed below presents a step-by-step approach to create
a star map for your avid adventurers to explore. You will need a full set
of polyhedral dice and lots of paper before proceeding.
1d1000 | Type | Binary | Multiple | Spectral Type (Choose one) | Ecosphere (N=1d10) |
---|---|---|---|---|---|
001 - 002 | Massive Black Hole | 0% | 0% | - | - |
003 - 010 | Black Hole | 1% | 0% | - | - |
011 - 027 | Pulsar | 2% | 0% | - | - |
028 - 049 | Neutron Star | 4% | 1% - 1d3 | - | - |
051 - 075 | Protostar | 6% | 1% - 1d3 | M,K,G,F,R | +2N |
076 - 140 | Dwarf | 8% | 2% - 1d4 | M,K,G,F,A,B,R,N | +4N |
141 - 280 | Sub-dwarf | 12% | 4% - 1d5 | M,K,G,F,A,B,O,W,R,N,S | +5N |
281 - 750 | Main Sequence | 18% | 8% - 1d6 | M,K,G,F,A,B,O,W,R,N,S,X | +6N |
751 - 850 | Sub-giant | 14% | 12% - 1d5 | M,K,G,F,A,B,O,R,N,S,X | +7N |
851 - 929 | Giant | 12% | 16% - 1d4 | M,K,G,F,A,B,R,N,S | +8N |
930 - 000 | Supergiant | 10% | 12% - 1d3 | M,K,G,F,A,R,N | +9N |
Determine whether a system is binary. If it is, roll to determine the
type of the companion star ignoring the "Binary" and "Multiple" columns.
If the system is not binary, check again to determine if the system is
multiple. If it is, roll the required dice to see how many companion stars
there are. Again, ignore the "Binary" and "Multiple" columns.
Pick a spectral type for a star (where applicable) and finally calculate
the Ecosphere Modifier (which is used later in Step 6).
Note: The random number "N" is used in Step 7.
Type of System | Stability | X-Ray Level | Planet | Number | Asteroid Belt | Number |
---|---|---|---|---|---|---|
Massive BH | - | X | 2% | 1d4 | 20% | 1d4 |
BH | - | XI | 4% | 1d6 | 18% | 1d3 |
Pulsar | - | VIII | 8% | 1d8 | 16% | 1d3 |
N Star | - | VI (1-4) or VII(6-10) | 16% | 1d10 | 14% | 1d3 |
Protostar | [30 + (6d10 - 1d12)]% | - | 08% | 1d6 | 12% | 1d4 |
Dwarf | [50 + (4d10 - 1d10)]% | - | 24% | 1d12 | 12% | 1d3 |
Sub-Dwarf | [70 + (2d10 - 1d8)]% | - | 40% | 2d8 | 10% | 1d3 |
Main Seq | [90 + (1d10 - 1d6)]% | - | 56% | 2d10 | 8% | 1d2 |
Sub-Giant | [80 + (1d10 - 1d8)]% | - | 40% | 1d12 | 10% | 1d3 |
Giant | [70 + (2d10 - 1d10)]% | - | 32% | 1d10 | 15% | 1d3 |
Super- | [60 + (3d10 - 1d12)]% | - | 28% | 1d8 | 20% | 1d4 |
Stability and X-Ray Level is explained in the next step. Also, determine
the number of planets and asteroid belts for the system, if any.
If there are more asteroid belts than planets, decrease the star stability
by 10%.
Present Stability | -1% | +0% | +1% | Scientific Term | X-Ray Level |
---|---|---|---|---|---|
99-90 | 01-02 | 03-98 | 99-00 | Normal | I |
89-70 | 01-04 | 05-96 | 97-00 | Semi-regular | II |
69-50 | 01-08 | 09-92 | 93-00 | Flare | III |
49-30 | 01-12 | 13-88 | 89-00 | Unstable/Variable | IV |
29-10 | 01-16 | 17-84 | 85-00 | Radio Star/Irregular | V |
09-01 | 01-20 | 21-80 | 81-00 | Recurrent Nova | VI |
Present Stability | No Activity | Sunspots | Prominences | Flares | Variability | Nova |
---|---|---|---|---|---|---|
99-90 | 01-79 | 80-89 | 90-94 | 95-00 | - | - |
89-70 | 01-69 | 70-79 | 80-89 | 90-00 | - | - |
69-50 | 01-59 | 60-69 | 70-84 | 85-94 | 95-00 | - |
49-30 | 01-49 | 50-59 | 60-79 | 80-84 | 85-00 | - |
29-10 | 01-39 | 40-49 | 50-74 | 75-79 | 80-94 | 95-00 |
09-01 | 01-29 | 30-39 | 40-69 | 70-74 | 75-79 | 80-00 |
Description | Intensity (determined daily) |
---|---|
Sunspots | No hull damage |
Prominences | 25% chance of 1d10 |
Flares | 50% chance of 2d10 |
Variability | 75% chance of 2d10 |
Nova | 100% of 2d10 within 1LY of star |
X-Ray Level and Intensity are explained in Step 10.
Spectral Type | Star Color | Ecosphere Range |
---|---|---|
X | Dark Grey | 00 - 06 |
S | Grey | 03 - 09 |
N | Dark Red-Grey | 06 - 12 |
R | Dark Red | 09 - 15 |
M | Red | 11 - 17 |
K | Orange | 13 - 19 |
G | Yellow | 15 - 21 |
F | Green | 16 - 22 |
A | White | 17 - 23 |
B | Light Blue | 18 - 24 |
O | Blue | 19 - 25 |
W | Dark Blue | 20 - 26 |
The Ecosphere range is a crucial element when determining whether life
exists during Planet generation.
For example, if you have a type G star and you rolled "N" as 6, the spectral class would be G6. Note that G6 is hotter than G5, F0 is hotter than G9, etc. Table 6 shows you the coldest spectral type at the top and the hottest at the bottom.
Note: The real life sequence of star classification in astronomy is
O, B, A, F, G, K, M (or also easily remembered as "Oh, Be A Fine Girl,
Kiss Me!". Stars of Type W, R, N, and S are very special categories. X
is for labelling dead dwarf stars.
1d1000 | Type | Size | Remarks |
---|---|---|---|
001-130 | Asteroid Field | 1d3 square radius | Intensity = 2d10 |
131-150 | Asteroid Field, Magnetic | 1d2 square radius | Intensity = 3d30 |
151-200 | Cloud, Dust | 4d6 square diameter | Intensity = 1d10 |
201-290 | Cloud, Ion | 3d6 square diameter | X-Ray = V, Intensity = 1d10 |
291-310 | Cloud, Magnetic Ion | 3d4 square diameter | X-Ray = VI, Intensity = 1d10 |
311-370 | Cloud, Oort | 4d4 square diameter | Intensity = 1d20 |
371-410 | Continuum Flux | 1d2 square radius | Intensity = 1d10 |
411-530 | Nebula, Bright | 3d4 square radius | X-Ray = II |
531-630 | Nebula, Dark | 3d4 square radius | X-Ray = III |
631-750 | Nebula, Emission | 2d4 square radius | X-Ray = IV |
751-780 | Nebula, Radio | 2d4 square radius | X-Ray = VIII |
781-800 | Referee's Choice | Variable size | Variable |
801-900 | Space Storm | 1d10 square radius | Intensity = 3d20 |
901-920 | Vortex | Ends 4d10 squares away | Intensity = 1d12 |
921-000 | Wormhole | Ends 2d10 squares away | Intensity = 1d6 |
Note: Intensity and X-Ray Level are explained in Step 10.