🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.73

Radius: 1.86

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.48 AU - 0.6 AU

Year: 260 Days

Day: 19.3 Hours

Environment

Temp: -120 °C

Axial Tilt: 38.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 51,696,337 km

• M1: 84,074 km (0.095 R)
• M2: 135,835 km (0.102 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 135

Radius: 9.8

Gravity: 1.41 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.7 AU - 0.8 AU

Year: 426 Days

Day: 8.9 Hours

Environment

Temp: -138 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 51,696,337 km

• M1: 122,221 km (0.109 R)
• M2: 449,691 km (0.101 R)
• M3: 1,153,549 km (0.102 R)
• M4: 1,782,907 km (0.096 R)
• M5: 2,129,675 km (0.111 R)
• M6: 2,474,050 km (0.097 R)
• M7: 3,344,260 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 32.7

Radius: 14.8

Gravity: 0.15 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.92 AU - 1.2 AU

Year: 716 Days

Day: 5.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 51,696,337 km

• M1: 184,005 km (0.06 R)
• M2: 914,791 km (0.099 R)
• M3: 1,519,466 km (0.08 R)
• M4: 2,174,555 km (0.082 R)
• M5: 2,768,159 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 21.5

Radius: 12.7

Gravity: 0.13 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1.02 AU - 1.48 AU

Year: 917 Days

Day: 14.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 51,696,337 km

• M1: 170,990 km (0.09 R)
• M2: 604,525 km (0.087 R)
• M3: 1,184,217 km (0.092 R)
• M4: 2,152,115 km (0.05 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.3

Radius: 13

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 1.52 AU - 2.4 AU

Year: 1800 Days

Day: 12.4 Hours

Environment

Temp: -192 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 51,696,337 km

• M1: 161,865 km (0.104 R)
• M2: 612,005 km (0.093 R)
• M3: 1,269,787 km (0.12 R)
• M4: 1,737,280 km (0.081 R)
• M5: 2,173,507 km (0.116 R)
• M6: 2,600,909 km (0.075 R)
• M7: 3,137,965 km (0.102 R)
• M8: 3,629,244 km (0.071 R)
• M9: 4,059,039 km (0.093 R)
• M10: 4,857,892 km (0.088 R)
• M11: 5,285,592 km (0.063 R)
• M12: 5,923,028 km (0.047 R)
• M13: 6,412,363 km (0.109 R)
• M14: 7,208,822 km (0.11 R)
• M15: 7,792,403 km (0.09 R)
• M16: 8,302,682 km (0.111 R)
• M17: 8,971,833 km (0.063 R)
• M18: 9,792,976 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 214.3

Radius: 13.1

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 2.36 AU - 2.7 AU

Year: 2640 Days

Day: 13 Hours

Environment

Temp: -188 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 51,696,337 km

• M1: 162,912 km (0.09 R)
• M2: 687,402 km (0.093 R)
• M3: 1,214,585 km (0.102 R)
• M4: 1,709,604 km (0.038 R)
• M5: 2,188,467 km (0.076 R)
• M6: 2,690,817 km (0.079 R)
• M7: 3,454,813 km (0.113 R)
• M8: 3,983,193 km (0.096 R)
• M9: 4,603,575 km (0.093 R)
• M10: 5,610,519 km (0.043 R)
• M11: 6,296,425 km (0.11 R)
• M12: 7,509,813 km (0.116 R)
• M13: 8,994,123 km (0.091 R)
• M14: 9,709,949 km (0.11 R)
• M15: 10,396,154 km (0.084 R)
• M16: 11,793,099 km (0.097 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 213.6

Radius: 10.4

Gravity: 1.97 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 2.44 AU - 3.02 AU

Year: 2959 Days

Day: 8.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 51,696,337 km

• M1: 129,402 km (0.099 R)
• M2: 471,084 km (0.1 R)
• M3: 1,558,361 km (0.104 R)
• M4: 1,938,938 km (0.064 R)
• M5: 2,470,459 km (0.103 R)
• M6: 3,538,438 km (0.106 R)
• M7: 4,726,994 km (0.025 R)
• M8: 6,091,775 km (0.118 R)
• M9: 6,813,585 km (0.11 R)
• M10: 7,343,759 km (0.056 R)
• M11: 7,787,616 km (0.104 R)
• M12: 8,698,667 km (0.117 R)
• M13: 10,179,387 km (0.089 R)
• M14: 11,159,253 km (0.078 R)
• M15: 12,277,647 km (0.088 R)
• M16: 13,144,118 km (0.09 R)
• M17: 13,469,044 km (0.116 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 299.1

Radius: 3.7

Gravity: 21.85 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 7.79 AU - 9.69 AU

Year: 16950 Days

Day: 17.9 Hours

Environment

Temp: -226 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 51,696,337 km

• M1: 62,981 km (0.112 R)
• M2: 181,761 km (0.068 R)
• M3: 367,712 km (0.067 R)
• M4: 524,341 km (0.102 R)
• M5: 650,152 km (0.073 R)
• M6: 1,279,810 km (0.1 R)
• M7: 1,440,627 km (0.113 R)
• M8: 2,112,172 km (0.105 R)
• M9: 2,415,856 km (0.065 R)
• M10: 2,835,628 km (0.091 R)
• M11: 3,205,134 km (0.027 R)
• M12: 3,605,757 km (0.106 R)
• M13: 4,628,259 km (0.103 R)
• M14: 6,502,271 km (0.071 R)
• M15: 6,817,175 km (0.106 R)
• M16: 7,183,540 km (0.103 R)
• M17: 7,519,986 km (0.068 R)
• M18: 8,315,398 km (0.088 R)
• M19: 9,214,182 km (0.12 R)
• M20: 9,611,364 km (0.087 R)
• M21: 11,654,721 km (0.11 R)
• M22: 16,214,913 km (0.075 R)
• M23: 19,728,818 km (0.104 R)
• M24: 24,088,399 km (0.119 R)
• M25: 25,222,650 km (0.097 R)
• M26: 30,007,986 km (0.113 R)
• M27: 33,591,005 km (0.072 R)
• M28: 34,175,334 km (0.116 R)
• M29: 35,484,765 km (0.108 R)
• M30: 36,335,228 km (0.1 R)
• M31: 37,323,771 km (0.101 R)
• M32: 45,032,549 km (0.106 R)
• M33: 51,387,018 km (0.103 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: 164 - 16,456 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit