🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.87

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.45 AU - 0.65 AU

Year: 268 Days

Day: 23 Hours

Environment

Temp: -116 °C

Axial Tilt: 33.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.14

Radius: 0.46

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.46 AU - 0.74 AU

Year: 305 Days

Day: 24.7 Hours

Environment

Temp: -121 °C

Axial Tilt: 11.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,524,215 km

• M1: 12,716 km (0.107 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 104.5

Radius: 12.9

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.7 AU - 0.82 AU

Year: 435 Days

Day: 13.2 Hours

Environment

Temp: -142 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 53,524,215 km

• M1: 160,369 km (0.075 R)
• M2: 597,793 km (0.116 R)
• M3: 1,368,521 km (0.091 R)
• M4: 2,006,257 km (0.067 R)
• M5: 2,761,876 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 627.3

Radius: 10.8

Gravity: 5.38 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 0.79 AU - 0.99 AU

Year: 551 Days

Day: 14 Hours

Environment

Temp: -142 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 53,524,215 km

• M1: 134,339 km (0.076 R)
• M2: 514,168 km (0.097 R)
• M3: 897,138 km (0.046 R)
• M4: 1,338,153 km (0.108 R)
• M5: 1,931,309 km (0.119 R)
• M6: 3,465,135 km (0.095 R)
• M7: 3,979,154 km (0.095 R)
• M8: 4,349,558 km (0.106 R)
• M9: 5,361,139 km (0.104 R)
• M10: 5,904,478 km (0.048 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 960.4

Radius: 10

Gravity: 9.6 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 1.27 AU - 1.39 AU

Year: 1006 Days

Day: 13.9 Hours

Environment

Temp: -166 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,524,215 km

• M1: 124,465 km (0.077 R)
• M2: 440,566 km (0.105 R)
• M3: 810,671 km (0.107 R)
• M4: 1,205,908 km (0.115 R)
• M5: 1,692,700 km (0.085 R)
• M6: 2,217,190 km (0.063 R)
• M7: 2,555,132 km (0.05 R)
• M8: 2,914,017 km (0.099 R)
• M9: 3,655,424 km (0.09 R)
• M10: 4,062,480 km (0.107 R)
• M11: 5,144,671 km (0.105 R)
• M12: 5,871,567 km (0.077 R)
• M13: 6,316,920 km (0.095 R)
• M14: 7,101,112 km (0.118 R)
• M15: 7,948,733 km (0.101 R)
• M16: 8,383,315 km (0.073 R)
• M17: 8,748,035 km (0.109 R)
• M18: 9,630,363 km (0.119 R)
• M19: 10,378,053 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 177.8

Radius: 8.2

Gravity: 2.64 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 1.52 AU - 1.9 AU

Year: 1467 Days

Day: 7 Hours

Environment

Temp: -175 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 53,524,215 km

• M1: 102,026 km (0.095 R)
• M2: 429,346 km (0.085 R)
• M3: 979,866 km (0.086 R)
• M4: 1,304,045 km (0.112 R)
• M5: 1,625,530 km (0.113 R)
• M6: 1,981,125 km (0.103 R)
• M7: 2,325,349 km (0.052 R)
• M8: 3,083,960 km (0.047 R)
• M9: 3,590,349 km (0.097 R)
• M10: 4,355,841 km (0.076 R)
• M11: 5,521,358 km (0.051 R)
• M12: 6,773,792 km (0.049 R)
• M13: 7,747,075 km (0.088 R)
• M14: 8,058,837 km (0.08 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 508.2

Radius: 8.5

Gravity: 7.03 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 2.47 AU - 3.67 AU

Year: 3529 Days

Day: 12 Hours

Environment

Temp: -211 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 53,524,215 km

• M1: 105,766 km (0.118 R)
• M2: 438,621 km (0.064 R)
• M3: 832,363 km (0.053 R)
• M4: 1,326,634 km (0.084 R)
• M5: 1,657,993 km (0.107 R)
• M6: 1,993,092 km (0.067 R)
• M7: 2,445,925 km (0.088 R)
• M8: 3,243,731 km (0.05 R)
• M9: 4,269,523 km (0.095 R)
• M10: 9,608,671 km (0.112 R)
• M11: 13,441,518 km (0.092 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 396.2

Radius: 9.3

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 3.4 AU - 4.14 AU

Year: 4802 Days

Day: 7.1 Hours

Environment

Temp: -219 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,524,215 km

• M1: 117,285 km (0.108 R)
• M2: 628,161 km (0.11 R)
• M3: 1,178,682 km (0.117 R)
• M4: 1,539,362 km (0.078 R)
• M5: 2,040,066 km (0.114 R)
• M6: 3,723,940 km (0.057 R)
• M7: 4,018,049 km (0.068 R)
• M8: 4,725,348 km (0.111 R)
• M9: 6,037,920 km (0.084 R)
• M10: 7,545,417 km (0.043 R)
• M11: 8,950,590 km (0.105 R)
• M12: 9,754,380 km (0.046 R)
• M13: 14,204,318 km (0.12 R)
• M14: 14,510,844 km (0.118 R)
• M15: 14,979,085 km (0.12 R)
• M16: 16,277,146 km (0.091 R)
• M17: 19,532,246 km (0.109 R)
• M18: 20,490,121 km (0.1 R)
• M19: 22,637,748 km (0.103 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 859.6

Radius: 11.2

Gravity: 6.85 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 3.23 AU - 4.97 AU

Year: 5446 Days

Day: 6.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 53,524,215 km

• M1: 139,874 km (0.086 R)
• M2: 669,450 km (0.094 R)
• M3: 1,057,208 km (0.096 R)
• M4: 1,795,474 km (0.043 R)
• M5: 2,683,487 km (0.077 R)
• M6: 4,406,106 km (0.114 R)
• M7: 5,576,709 km (0.093 R)
• M8: 6,979,040 km (0.059 R)
• M9: 9,268,486 km (0.089 R)
• M10: 10,560,263 km (0.104 R)
• M11: 15,213,804 km (0.08 R)
• M12: 16,750,773 km (0.063 R)
• M13: 19,492,004 km (0.119 R)
• M14: 20,275,448 km (0.107 R)
• M15: 26,102,285 km (0.072 R)
• M16: 26,966,811 km (0.103 R)
• M17: 29,861,381 km (0.119 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 193.1

Radius: 5.7

Gravity: 5.94 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 9.48 AU - 11.46 AU

Year: 22224 Days

Day: 18.6 Hours

Environment

Temp: -229 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 53,524,215 km

• M1: 71,358 km (0.078 R)
• M2: 420,370 km (0.077 R)
• M3: 866,620 km (0.12 R)
• M4: 3,266,170 km (0.091 R)
• M5: 3,543,525 km (0.103 R)
• M6: 4,440,514 km (0.12 R)
• M7: 6,056,619 km (0.102 R)
• M8: 6,914,264 km (0.035 R)
• M9: 11,559,128 km (0.12 R)
• M10: 18,326,936 km (0.025 R)
• M11: 24,095,729 km (0.112 R)
• M12: 24,284,372 km (0.093 R)
• M13: 27,955,354 km (0.082 R)
• M14: 30,634,802 km (0.111 R)
• M15: 35,027,893 km (0.035 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 473 - 19,737 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit