🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.74

Radius: 0.89

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 0.5 AU - 0.54 AU

Year: 246 Days

Day: 43.8 Hours

Environment

Temp: -124 °C

Axial Tilt: 9.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 59,701,056 km

• M1: 196,272 km (0.106 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 866.8

Radius: 13.7

Gravity: 4.62 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.68 AU - 0.72 AU

Year: 384 Days

Day: 10.1 Hours

Environment

Temp: -135 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 59,701,056 km

• M1: 170,392 km (0.065 R)
• M2: 1,043,296 km (0.107 R)
• M3: 1,484,460 km (0.099 R)
• M4: 1,917,845 km (0.064 R)
• M5: 2,746,916 km (0.058 R)
• M6: 4,856,246 km (0.063 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 756.8

Radius: 12.4

Gravity: 4.92 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.68 AU - 0.88 AU

Year: 452 Days

Day: 6.3 Hours

Environment

Temp: -149 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 59,701,056 km

• M1: 154,235 km (0.107 R)
• M2: 698,323 km (0.107 R)
• M3: 1,208,302 km (0.094 R)
• M4: 1,601,744 km (0.09 R)
• M5: 2,221,828 km (0.053 R)
• M6: 2,679,747 km (0.12 R)
• M7: 3,648,094 km (0.042 R)
• M8: 4,206,543 km (0.065 R)
• M9: 4,610,008 km (0.072 R)
• M10: 5,071,069 km (0.07 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 708

Radius: 8.3

Gravity: 10.28 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 1.82 AU - 2.94 AU

Year: 2409 Days

Day: 7.2 Hours

Environment

Temp: -195 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 59,701,056 km

• M1: 103,372 km (0.096 R)
• M2: 374,294 km (0.115 R)
• M3: 653,743 km (0.075 R)
• M4: 1,079,349 km (0.111 R)
• M5: 1,417,589 km (0.091 R)
• M6: 1,747,453 km (0.038 R)
• M7: 2,015,682 km (0.092 R)
• M8: 2,636,962 km (0.071 R)
• M9: 3,224,433 km (0.105 R)
• M10: 3,558,634 km (0.117 R)
• M11: 4,593,103 km (0.087 R)
• M12: 5,298,457 km (0.081 R)
• M13: 5,867,079 km (0.086 R)
• M14: 6,951,963 km (0.085 R)
• M15: 7,331,792 km (0.088 R)
• M16: 9,232,732 km (0.069 R)
• M17: 9,872,711 km (0.083 R)
• M18: 11,004,719 km (0.105 R)
• M19: 11,280,876 km (0.043 R)
• M20: 12,645,658 km (0.05 R)
• M21: 13,932,947 km (0.113 R)
• M22: 17,449,993 km (0.088 R)
• M23: 18,043,149 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 344.9

Radius: 10.3

Gravity: 3.25 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 2.37 AU - 3.51 AU

Year: 3307 Days

Day: 13.3 Hours

Environment

Temp: -206 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 59,701,056 km

• M1: 128,056 km (0.089 R)
• M2: 612,154 km (0.111 R)
• M3: 1,304,493 km (0.099 R)
• M4: 1,789,191 km (0.095 R)
• M5: 2,674,212 km (0.108 R)
• M6: 3,140,807 km (0.077 R)
• M7: 3,904,056 km (0.104 R)
• M8: 4,299,144 km (0.07 R)
• M9: 4,986,995 km (0.034 R)
• M10: 5,872,016 km (0.032 R)
• M11: 7,085,703 km (0.101 R)
• M12: 7,736,753 km (0.099 R)
• M13: 9,399,234 km (0.103 R)
• M14: 11,209,219 km (0.12 R)
• M15: 11,888,244 km (0.111 R)
• M16: 13,022,943 km (0.095 R)
• M17: 13,460,966 km (0.079 R)
• M18: 14,505,907 km (0.108 R)
• M19: 14,834,424 km (0.069 R)
• M20: 15,899,411 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 542.2

Radius: 9.4

Gravity: 6.14 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 3.3 AU - 4.32 AU

Year: 4879 Days

Day: 14.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 59,701,056 km

• M1: 118,781 km (0.111 R)
• M2: 643,570 km (0.05 R)
• M3: 1,548,338 km (0.104 R)
• M4: 2,030,342 km (0.058 R)
• M5: 3,238,345 km (0.044 R)
• M6: 5,318,503 km (0.08 R)
• M7: 5,679,334 km (0.111 R)
• M8: 8,872,799 km (0.052 R)
• M9: 9,704,414 km (0.082 R)
• M10: 10,892,670 km (0.086 R)
• M11: 11,249,311 km (0.099 R)
• M12: 13,607,123 km (0.026 R)
• M13: 15,536,636 km (0.116 R)
• M14: 16,450,081 km (0.049 R)
• M15: 21,631,852 km (0.059 R)
• M16: 24,400,161 km (0.087 R)
• M17: 25,869,062 km (0.112 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 541.2

Radius: 12.1

Gravity: 3.7 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 4.84 AU - 5.08 AU

Year: 7247 Days

Day: 14.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 59,701,056 km

• M1: 150,645 km (0.105 R)
• M2: 727,046 km (0.109 R)
• M3: 1,160,580 km (0.098 R)
• M4: 1,676,843 km (0.103 R)
• M5: 2,213,899 km (0.118 R)
• M6: 2,640,103 km (0.116 R)
• M7: 4,112,146 km (0.079 R)
• M8: 4,573,805 km (0.086 R)
• M9: 6,537,277 km (0.099 R)
• M10: 8,800,095 km (0.091 R)
• M11: 9,439,027 km (0.044 R)
• M12: 9,881,987 km (0.07 R)
• M13: 14,228,253 km (0.115 R)
• M14: 16,721,601 km (0.052 R)
• M15: 27,154,557 km (0.116 R)
• M16: 31,157,197 km (0.119 R)
• M17: 33,759,153 km (0.074 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 740.8

Radius: 6.7

Gravity: 16.5 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 7.39 AU - 7.53 AU

Year: 13366 Days

Day: 15.8 Hours

Environment

Temp: -215 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 59,701,056 km

• M1: 83,326 km (0.077 R)
• M2: 351,106 km (0.119 R)
• M3: 604,525 km (0.044 R)
• M4: 876,943 km (0.047 R)
• M5: 1,230,891 km (0.115 R)
• M6: 1,478,027 km (0.107 R)
• M7: 1,692,999 km (0.092 R)
• M8: 2,036,925 km (0.043 R)
• M9: 2,324,601 km (0.101 R)
• M10: 3,252,407 km (0.064 R)
• M11: 4,923,266 km (0.118 R)
• M12: 6,352,374 km (0.096 R)
• M13: 7,899,067 km (0.093 R)
• M14: 9,263,848 km (0.065 R)
• M15: 10,056,418 km (0.074 R)
• M16: 13,682,072 km (0.11 R)
• M17: 14,291,833 km (0.101 R)
• M18: 16,990,578 km (0.1 R)
• M19: 17,615,748 km (0.112 R)
• M20: 19,924,791 km (0.1 R)
• M21: 34,295,312 km (0.119 R)
• M22: 35,798,920 km (0.111 R)
• M23: 41,547,817 km (0.077 R)
• M24: 51,846,433 km (0.059 R)
• M25: 53,159,603 km (0.104 R)
• M26: 53,991,517 km (0.114 R)
• M27: 58,811,261 km (0.115 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 214 - 18,940 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit