🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.68

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.56 AU - 0.64 AU

Year: 296 Days

Day: 16.7 Hours

Environment

Temp: -138 °C

Axial Tilt: 15.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.3

Radius: 12.7

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 0.69 AU - 1.03 AU

Year: 507 Days

Day: 6.8 Hours

Environment

Temp: -152 °C

Axial Tilt: 48.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 37,757,788 km

• M1: 157,975 km (0.098 R)
• M2: 597,643 km (0.077 R)
• M3: 1,084,435 km (0.069 R)
• M4: 1,504,506 km (0.117 R)
• M5: 1,939,985 km (0.077 R)
• M6: 2,405,384 km (0.114 R)
• M7: 2,810,794 km (0.116 R)
• M8: 3,577,932 km (0.091 R)
• M9: 4,637,235 km (0.081 R)
• M10: 5,208,998 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 341.5

Radius: 13.1

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 1.26 AU - 1.76 AU

Year: 1180 Days

Day: 8.4 Hours

Environment

Temp: -182 °C

Axial Tilt: 129.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 37,757,788 km

• M1: 163,062 km (0.091 R)
• M2: 640,279 km (0.107 R)
• M3: 1,143,676 km (0.085 R)
• M4: 1,592,619 km (0.07 R)
• M5: 2,054,428 km (0.071 R)
• M6: 2,583,705 km (0.106 R)
• M7: 3,049,104 km (0.117 R)
• M8: 3,599,026 km (0.085 R)
• M9: 4,073,700 km (0.077 R)
• M10: 4,657,730 km (0.099 R)
• M11: 5,186,857 km (0.1 R)
• M12: 6,199,186 km (0.113 R)
• M13: 7,362,459 km (0.049 R)
• M14: 8,157,273 km (0.059 R)
• M15: 8,744,444 km (0.071 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 956.5

Radius: 13.1

Gravity: 5.57 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 2.34 AU - 2.34 AU

Year: 2276 Days

Day: 13.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 37,757,788 km

• M1: 162,912 km (0.105 R)
• M2: 887,714 km (0.113 R)
• M3: 1,356,105 km (0.093 R)
• M4: 1,873,414 km (0.12 R)
• M5: 2,980,438 km (0.12 R)
• M6: 3,697,760 km (0.117 R)
• M7: 4,169,293 km (0.066 R)
• M8: 5,404,373 km (0.114 R)
• M9: 6,282,063 km (0.114 R)
• M10: 7,742,737 km (0.098 R)
• M11: 8,486,089 km (0.042 R)
• M12: 10,153,357 km (0.073 R)
• M13: 10,612,024 km (0.119 R)
• M14: 11,736,402 km (0.115 R)
• M15: 12,762,045 km (0.088 R)
• M16: 13,569,873 km (0.07 R)
• M17: 14,942,733 km (0.065 R)
• M18: 15,486,970 km (0.077 R)
• M19: 17,852,711 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 541.8

Radius: 13.5

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 2.11 AU - 2.71 AU

Year: 2379 Days

Day: 15 Hours

Environment

Temp: -200 °C

Axial Tilt: 6.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 37,757,788 km

• M1: 168,746 km (0.1 R)
• M2: 596,148 km (0.102 R)
• M3: 1,363,585 km (0.07 R)
• M4: 1,851,274 km (0.086 R)
• M5: 2,312,334 km (0.05 R)
• M6: 3,191,072 km (0.103 R)
• M7: 3,735,309 km (0.089 R)
• M8: 4,668,501 km (0.066 R)
• M9: 6,379,003 km (0.057 R)
• M10: 10,998,435 km (0.107 R)
• M11: 12,740,802 km (0.111 R)
• M12: 13,246,592 km (0.075 R)
• M13: 14,030,186 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 572.5

Radius: 13.9

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 3.17 AU - 3.31 AU

Year: 3708 Days

Day: 6.2 Hours

Environment

Temp: -199 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 37,757,788 km

• M1: 172,935 km (0.095 R)
• M2: 659,128 km (0.046 R)
• M3: 1,173,147 km (0.108 R)
• M4: 1,631,215 km (0.104 R)
• M5: 2,143,289 km (0.039 R)
• M6: 2,861,059 km (0.039 R)
• M7: 3,369,243 km (0.076 R)
• M8: 4,616,291 km (0.088 R)
• M9: 5,766,100 km (0.102 R)
• M10: 6,466,817 km (0.092 R)
• M11: 8,175,075 km (0.057 R)
• M12: 9,470,293 km (0.115 R)
• M13: 10,774,188 km (0.093 R)
• M14: 12,060,431 km (0.097 R)
• M15: 12,879,928 km (0.066 R)
• M16: 18,479,975 km (0.04 R)
• M17: 20,959,110 km (0.069 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 57.6

Radius: 8.7

Gravity: 0.76 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 4.69 AU - 4.87 AU

Year: 6645 Days

Day: 11.5 Hours

Environment

Temp: -208 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 37,757,788 km

• M1: 108,159 km (0.107 R)
• M2: 407,056 km (0.12 R)
• M3: 899,682 km (0.089 R)
• M4: 1,810,284 km (0.114 R)
• M5: 2,380,252 km (0.101 R)
• M6: 2,707,572 km (0.079 R)
• M7: 4,992,679 km (0.114 R)
• M8: 7,218,696 km (0.069 R)
• M9: 8,611,302 km (0.098 R)
• M10: 12,395,081 km (0.03 R)
• M11: 13,682,221 km (0.069 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 242.5

Radius: 5.1

Gravity: 9.32 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 5.98 AU - 8 AU

Year: 11750 Days

Day: 17.3 Hours

Environment

Temp: -223 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 37,757,788 km

• M1: 305,928 km (0.113 R)
• M2: 703,260 km (0.114 R)
• M3: 954,584 km (0.105 R)
• M4: 1,836,763 km (0.052 R)
• M5: 2,148,225 km (0.098 R)
• M6: 2,439,792 km (0.085 R)
• M7: 4,232,124 km (0.108 R)
• M8: 8,577,344 km (0.073 R)
• M9: 9,178,129 km (0.094 R)
• M10: 9,944,818 km (0.047 R)
• M11: 11,098,666 km (0.077 R)
• M12: 16,157,318 km (0.061 R)
• M13: 16,807,022 km (0.084 R)
• M14: 22,887,128 km (0.053 R)
• M15: 25,576,299 km (0.075 R)
• M16: 28,095,826 km (0.113 R)
• M17: 29,800,045 km (0.065 R)
• M18: 33,517,253 km (0.043 R)
• M19: 35,000,815 km (0.079 R)
• M20: 35,649,771 km (0.066 R)
• M21: 35,977,241 km (0.115 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: 260 - 11,832 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit