🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.22

Radius: 1.08

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.46 AU - 0.66 AU

Year: 152 Days

Day: 13.7 Hours

Environment

Temp: 220 °C

Axial Tilt: 19.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.72

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.79 AU - 0.83 AU

Year: 264 Days

Day: 38.8 Hours

Environment

Temp: 173 °C

Axial Tilt: 7.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 3.95 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.9

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 3.79 AU - 4.11 AU

Year: 2839 Days

Day: 15.2 Hours

Environment

Temp: -114 °C

Axial Tilt: 20.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 66,052,748 km

• M1: 35,455 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 6.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 717.1

Radius: 14.3

Gravity: 3.51 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 5.85 AU - 6.43 AU

Year: 5502 Days

Day: 11.5 Hours

Environment

Temp: -145 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 66,052,748 km

• M1: 177,872 km (0.084 R)
• M2: 914,492 km (0.107 R)
• M3: 1,444,068 km (0.113 R)
• M4: 4,025,230 km (0.118 R)
• M5: 5,704,316 km (0.111 R)
• M6: 6,718,440 km (0.045 R)
• M7: 8,578,989 km (0.082 R)
• M8: 9,607,474 km (0.071 R)
• M9: 10,174,002 km (0.072 R)
• M10: 11,664,146 km (0.091 R)
• M11: 13,780,657 km (0.092 R)
• M12: 15,483,828 km (0.111 R)
• M13: 16,694,823 km (0.098 R)
• M14: 17,708,349 km (0.07 R)
• M15: 20,707,636 km (0.118 R)
• M16: 21,287,179 km (0.046 R)
• M17: 26,321,745 km (0.096 R)
• M18: 27,694,455 km (0.059 R)
• M19: 30,396,193 km (0.104 R)
• M20: 31,239,925 km (0.083 R)
• M21: 32,292,196 km (0.043 R)

Planet 5 - Gas Giant

Semi-Major Axis: 9.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168

Radius: 8.5

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 8.13 AU - 11.43 AU

Year: 11061 Days

Day: 9.8 Hours

Environment

Temp: -171 °C

Axial Tilt: 77.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 66,052,748 km

• M1: 107,112 km (0.06 R)
• M2: 1,255,126 km (0.09 R)
• M3: 3,469,025 km (0.085 R)
• M4: 3,754,607 km (0.064 R)
• M5: 4,224,943 km (0.096 R)
• M6: 5,086,328 km (0.096 R)
• M7: 5,662,728 km (0.067 R)
• M8: 7,258,937 km (0.031 R)
• M9: 16,176,616 km (0.096 R)
• M10: 16,790,715 km (0.104 R)
• M11: 18,130,813 km (0.12 R)
• M12: 20,878,328 km (0.081 R)
• M13: 23,500,180 km (0.112 R)
• M14: 23,813,139 km (0.099 R)
• M15: 31,517,878 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 11.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 111.5

Radius: 13.7

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 10.98 AU - 12.92 AU

Year: 14940 Days

Day: 8.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 45 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 66,052,748 km

• M1: 173,085 km (0.046 R)
• M2: 617,690 km (0.109 R)
• M3: 1,107,772 km (0.12 R)
• M4: 1,680,134 km (0.097 R)
• M5: 2,267,754 km (0.086 R)
• M6: 3,355,031 km (0.086 R)
• M7: 4,174,229 km (0.06 R)
• M8: 5,236,973 km (0.118 R)
• M9: 5,709,852 km (0.117 R)
• M10: 6,472,801 km (0.096 R)
• M11: 10,965,823 km (0.08 R)
• M12: 11,693,916 km (0.119 R)
• M13: 12,978,962 km (0.096 R)
• M14: 15,346,797 km (0.12 R)
• M15: 17,013,317 km (0.089 R)
• M16: 19,841,166 km (0.111 R)
• M17: 21,516,063 km (0.119 R)
• M18: 23,839,917 km (0.096 R)
• M19: 24,405,247 km (0.084 R)
• M20: 25,395,435 km (0.065 R)
• M21: 30,185,709 km (0.106 R)
• M22: 32,397,513 km (0.101 R)

Planet 7 - Ice Giant

Semi-Major Axis: 17.81 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 242.6

Radius: 3.6

Gravity: 18.72 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 15.58 AU - 20.04 AU

Year: 27182 Days

Day: 22.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 66,052,748 km

• M1: 45,029 km (0.106 R)
• M2: 410,796 km (0.11 R)
• M3: 541,843 km (0.118 R)
• M4: 766,988 km (0.065 R)
• M5: 901,477 km (0.078 R)
• M6: 1,076,207 km (0.119 R)
• M7: 1,259,315 km (0.076 R)
• M8: 1,509,293 km (0.116 R)
• M9: 1,621,491 km (0.098 R)
• M10: 2,331,632 km (0.103 R)
• M11: 3,124,501 km (0.055 R)
• M12: 3,415,469 km (0.076 R)
• M13: 4,762,598 km (0.059 R)
• M14: 5,667,665 km (0.093 R)
• M15: 5,979,876 km (0.088 R)
• M16: 6,985,772 km (0.068 R)
• M17: 8,002,289 km (0.088 R)
• M18: 9,487,647 km (0.111 R)
• M19: 10,612,772 km (0.089 R)
• M20: 11,086,848 km (0.056 R)
• M21: 11,451,567 km (0.105 R)
• M22: 13,191,989 km (0.083 R)
• M23: 15,249,409 km (0.067 R)
• M24: 16,628,551 km (0.11 R)
• M25: 18,256,027 km (0.118 R)
• M26: 18,424,324 km (0.102 R)
• M27: 20,526,324 km (0.115 R)
• M28: 22,395,699 km (0.086 R)
• M29: 41,156,917 km (0.088 R)
• M30: 41,301,429 km (0.07 R)
• M31: 43,661,335 km (0.119 R)
• M32: 44,113,570 km (0.079 R)
• M33: 45,334,737 km (0.057 R)
• M34: 46,892,799 km (0.052 R)
• M35: 48,325,199 km (0.119 R)
• M36: 56,996,490 km (0.116 R)

Kuiper Belt

Range: 30.3 - 58.3 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 160 - 18,989 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit