🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.89

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.52 AU - 0.54 AU

Year: 245 Days

Day: 23.4 Hours

Environment

Temp: -123 °C

Axial Tilt: 31.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 31,347,372 km

• M1: 54,603 km (0.084 R)
• M2: 81,381 km (0.109 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.92

Radius: 1.3

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.48 AU - 0.74 AU

Year: 303 Days

Day: 37.8 Hours

Environment

Temp: -131 °C

Axial Tilt: 28.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 31,347,372 km

• M1: 150,645 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 514.4

Radius: 8.3

Gravity: 7.47 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.69 AU - 0.85 AU

Year: 430 Days

Day: 8.3 Hours

Environment

Temp: -139 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 31,347,372 km

• M1: 103,223 km (0.033 R)
• M2: 431,141 km (0.112 R)
• M3: 928,554 km (0.09 R)
• M4: 1,358,349 km (0.052 R)
• M5: 1,839,904 km (0.06 R)
• M6: 2,252,944 km (0.098 R)
• M7: 2,930,024 km (0.115 R)
• M8: 3,542,478 km (0.105 R)
• M9: 4,052,606 km (0.097 R)
• M10: 4,653,691 km (0.083 R)
• M11: 5,051,172 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 92.4

Radius: 11.6

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.69 AU - 1.03 AU

Year: 507 Days

Day: 7.4 Hours

Environment

Temp: -146 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 31,347,372 km

• M1: 144,212 km (0.087 R)
• M2: 629,657 km (0.096 R)
• M3: 1,017,266 km (0.058 R)
• M4: 1,487,900 km (0.026 R)
• M5: 1,876,556 km (0.06 R)
• M6: 2,813,188 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 772.3

Radius: 14.5

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 1.01 AU - 1.63 AU

Year: 964 Days

Day: 7.8 Hours

Environment

Temp: -169 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 31,347,372 km

• M1: 180,265 km (0.096 R)
• M2: 737,218 km (0.028 R)
• M3: 1,393,355 km (0.105 R)
• M4: 1,933,403 km (0.11 R)
• M5: 2,807,802 km (0.101 R)
• M6: 3,716,759 km (0.04 R)
• M7: 4,224,195 km (0.12 R)
• M8: 4,814,209 km (0.085 R)
• M9: 5,302,347 km (0.069 R)
• M10: 6,139,646 km (0.045 R)
• M11: 6,853,228 km (0.079 R)
• M12: 7,771,759 km (0.085 R)
• M13: 8,261,243 km (0.071 R)
• M14: 10,123,737 km (0.082 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 776.7

Radius: 8.4

Gravity: 11.01 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 2.15 AU - 2.43 AU

Year: 2203 Days

Day: 8.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 31,347,372 km

• M1: 104,419 km (0.104 R)
• M2: 384,317 km (0.105 R)
• M3: 665,711 km (0.104 R)
• M4: 1,083,687 km (0.094 R)
• M5: 1,555,967 km (0.073 R)
• M6: 2,172,759 km (0.075 R)
• M7: 2,467,168 km (0.113 R)
• M8: 2,959,195 km (0.104 R)
• M9: 3,271,257 km (0.095 R)
• M10: 3,696,863 km (0.081 R)
• M11: 4,079,384 km (0.081 R)
• M12: 4,573,207 km (0.095 R)
• M13: 5,060,298 km (0.087 R)
• M14: 5,754,731 km (0.086 R)
• M15: 7,215,255 km (0.11 R)
• M16: 7,691,724 km (0.079 R)
• M17: 8,125,857 km (0.107 R)
• M18: 8,478,310 km (0.107 R)
• M19: 9,918,638 km (0.093 R)
• M20: 11,676,114 km (0.08 R)
• M21: 12,501,296 km (0.067 R)
• M22: 12,799,145 km (0.107 R)
• M23: 13,497,767 km (0.079 R)
• M24: 13,992,637 km (0.115 R)
• M25: 15,258,833 km (0.114 R)
• M26: 15,795,890 km (0.083 R)
• M27: 18,179,582 km (0.053 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 527.1

Radius: 8.9

Gravity: 6.65 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 3.45 AU - 5.51 AU

Year: 6029 Days

Day: 8.7 Hours

Environment

Temp: -224 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 31,347,372 km

• M1: 110,702 km (0.085 R)
• M2: 461,809 km (0.059 R)
• M3: 971,040 km (0.115 R)
• M4: 1,731,745 km (0.112 R)
• M5: 2,155,107 km (0.034 R)
• M6: 3,543,674 km (0.1 R)
• M7: 3,876,380 km (0.075 R)
• M8: 4,813,910 km (0.103 R)
• M9: 6,268,600 km (0.049 R)
• M10: 7,341,216 km (0.066 R)
• M11: 7,663,899 km (0.032 R)
• M12: 8,033,406 km (0.072 R)
• M13: 8,570,761 km (0.088 R)
• M14: 9,547,635 km (0.111 R)
• M15: 10,194,796 km (0.079 R)
• M16: 11,385,445 km (0.099 R)
• M17: 13,607,422 km (0.048 R)
• M18: 15,163,390 km (0.1 R)
• M19: 15,924,544 km (0.094 R)
• M20: 17,459,867 km (0.104 R)
• M21: 18,165,819 km (0.119 R)
• M22: 18,890,471 km (0.07 R)
• M23: 19,361,704 km (0.103 R)
• M24: 21,180,665 km (0.116 R)
• M25: 25,236,114 km (0.053 R)
• M26: 26,723,416 km (0.029 R)
• M27: 27,231,899 km (0.086 R)
• M28: 28,093,732 km (0.118 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 258 - 16,952 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit