🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.87

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.61 AU - 0.69 AU

Year: 344 Days

Day: 38.3 Hours

Environment

Temp: -130 °C

Axial Tilt: 16.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 608.7

Radius: 12.3

Gravity: 4.02 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 0.95 AU - 0.95 AU

Year: 607 Days

Day: 13 Hours

Environment

Temp: -149 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 37,038,939 km

• M1: 153,039 km (0.104 R)
• M2: 556,803 km (0.076 R)
• M3: 1,138,440 km (0.113 R)
• M4: 1,613,263 km (0.06 R)
• M5: 2,343,899 km (0.116 R)
• M6: 2,764,569 km (0.054 R)
• M7: 3,421,602 km (0.101 R)
• M8: 3,897,324 km (0.111 R)
• M9: 4,569,467 km (0.058 R)
• M10: 5,352,013 km (0.089 R)
• M11: 6,492,697 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 988.3

Radius: 13.4

Gravity: 5.5 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.86 AU - 1.18 AU

Year: 676 Days

Day: 9.3 Hours

Environment

Temp: -170 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 37,038,939 km

• M1: 166,652 km (0.058 R)
• M2: 646,712 km (0.079 R)
• M3: 1,229,844 km (0.117 R)
• M4: 1,690,755 km (0.111 R)
• M5: 2,915,363 km (0.099 R)
• M6: 3,611,741 km (0.08 R)
• M7: 4,400,421 km (0.062 R)
• M8: 5,375,351 km (0.045 R)
• M9: 5,914,501 km (0.09 R)
• M10: 6,900,800 km (0.08 R)
• M11: 7,824,118 km (0.038 R)
• M12: 8,467,539 km (0.03 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 19.3

Radius: 9.2

Gravity: 0.23 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.92 AU - 1.18 AU

Year: 706 Days

Day: 5.4 Hours

Environment

Temp: -156 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 37,038,939 km

• M1: 116,088 km (0.073 R)
• M2: 492,775 km (0.107 R)
• M3: 947,254 km (0.076 R)
• M4: 1,268,440 km (0.069 R)
• M5: 1,750,594 km (0.066 R)
• M6: 2,164,980 km (0.039 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 142.9

Radius: 14.8

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.4 AU - 1.6 AU

Year: 1205 Days

Day: 5.8 Hours

Environment

Temp: -171 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 37,038,939 km

• M1: 184,005 km (0.105 R)
• M2: 652,845 km (0.115 R)
• M3: 1,301,352 km (0.086 R)
• M4: 2,064,151 km (0.108 R)
• M5: 2,549,896 km (0.11 R)
• M6: 3,785,574 km (0.101 R)
• M7: 4,433,931 km (0.093 R)
• M8: 5,738,574 km (0.067 R)
• M9: 6,422,985 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 876.5

Radius: 13.6

Gravity: 4.74 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 2.17 AU - 2.79 AU

Year: 2562 Days

Day: 5.9 Hours

Environment

Temp: -189 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 37,038,939 km

• M1: 169,195 km (0.082 R)
• M2: 597,494 km (0.079 R)
• M3: 1,024,147 km (0.12 R)
• M4: 1,542,204 km (0.104 R)
• M5: 3,046,561 km (0.079 R)
• M6: 4,359,282 km (0.106 R)
• M7: 4,895,441 km (0.036 R)
• M8: 6,292,535 km (0.075 R)
• M9: 7,009,558 km (0.104 R)
• M10: 7,941,104 km (0.118 R)
• M11: 8,470,830 km (0.095 R)
• M12: 9,564,540 km (0.065 R)
• M13: 10,241,769 km (0.096 R)
• M14: 12,291,559 km (0.087 R)
• M15: 18,822,703 km (0.087 R)
• M16: 20,129,291 km (0.104 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 117.5

Radius: 11.9

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 3.31 AU - 3.67 AU

Year: 4277 Days

Day: 13.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 37,038,939 km

• M1: 149,598 km (0.063 R)
• M2: 1,091,765 km (0.067 R)
• M3: 1,702,274 km (0.06 R)
• M4: 2,427,674 km (0.081 R)
• M5: 3,114,478 km (0.088 R)
• M6: 3,820,580 km (0.107 R)
• M7: 5,416,191 km (0.094 R)
• M8: 6,824,056 km (0.111 R)
• M9: 7,197,902 km (0.081 R)
• M10: 7,928,538 km (0.105 R)
• M11: 11,171,071 km (0.054 R)
• M12: 11,996,552 km (0.079 R)
• M13: 13,895,997 km (0.119 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 451.2

Radius: 8.4

Gravity: 6.39 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 4.43 AU - 6.49 AU

Year: 8369 Days

Day: 12.4 Hours

Environment

Temp: -222 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 37,038,939 km

• M1: 106,065 km (0.101 R)
• M2: 519,553 km (0.111 R)
• M3: 1,111,662 km (0.11 R)
• M4: 1,647,671 km (0.106 R)
• M5: 1,915,302 km (0.119 R)
• M6: 2,228,709 km (0.071 R)
• M7: 3,144,697 km (0.075 R)
• M8: 9,651,157 km (0.08 R)
• M9: 12,343,620 km (0.116 R)
• M10: 13,491,933 km (0.058 R)
• M11: 14,121,291 km (0.064 R)
• M12: 14,769,798 km (0.117 R)
• M13: 15,748,617 km (0.097 R)
• M14: 20,098,624 km (0.092 R)
• M15: 21,223,151 km (0.049 R)
• M16: 29,052,804 km (0.096 R)
• M17: 31,871,228 km (0.113 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 269 - 13,712 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit