🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.67

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.41 AU - 0.65 AU

Year: 145 Days

Day: 21.7 Hours

Environment

Temp: 186 °C

Axial Tilt: 38.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.82

Radius: 1.51

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.52 AU - 0.8 AU

Year: 202 Days

Day: 41.6 Hours

Environment

Temp: 137 °C

Axial Tilt: 8.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.79

Radius: 1.26

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 1.19 AU - 1.83 AU

Year: 699 Days

Day: 29.9 Hours

Environment

Temp: -39 °C

Axial Tilt: 37.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.56

Radius: 1.19

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.36 AU - 1.94 AU

Year: 798 Days

Day: 30.3 Hours

Environment

Temp: -52 °C

Axial Tilt: 17.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.81

Radius: 1.51

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 1.36 AU - 2.16 AU

Year: 880 Days

Day: 12.5 Hours

Environment

Temp: -70 °C

Axial Tilt: 33.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 90,047,068 km

• M1: 290,070 km (0.093 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.08 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.67

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 1.78 AU - 2.38 AU

Year: 1130 Days

Day: 47.2 Hours

Environment

Temp: -82 °C

Axial Tilt: 39.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 90,047,068 km

• M1: 246,986 km (0.117 R)
• M2: 1,701,077 km (0.079 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 817.9

Radius: 4.3

Gravity: 44.23 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 11.53 AU - 17.95 AU

Year: 21319 Days

Day: 16.9 Hours

Environment

Temp: -186 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 90,047,068 km

• M1: 53,556 km (0.105 R)
• M2: 481,855 km (0.112 R)
• M3: 1,091,167 km (0.05 R)
• M4: 1,961,378 km (0.117 R)
• M5: 2,258,778 km (0.113 R)
• M6: 2,659,551 km (0.049 R)
• M7: 3,218,299 km (0.086 R)
• M8: 4,013,860 km (0.034 R)
• M9: 4,820,043 km (0.075 R)
• M10: 5,563,096 km (0.094 R)
• M11: 5,940,531 km (0.118 R)
• M12: 7,572,046 km (0.118 R)
• M13: 9,480,017 km (0.089 R)
• M14: 10,959,390 km (0.089 R)
• M15: 18,973,498 km (0.072 R)
• M16: 19,539,127 km (0.047 R)
• M17: 21,914,592 km (0.099 R)
• M18: 27,348,286 km (0.025 R)
• M19: 27,707,321 km (0.114 R)
• M20: 28,191,120 km (0.112 R)
• M21: 34,303,689 km (0.065 R)
• M22: 34,442,516 km (0.105 R)
• M23: 35,425,075 km (0.098 R)
• M24: 35,994,744 km (0.107 R)
• M25: 37,298,938 km (0.094 R)
• M26: 39,238,026 km (0.095 R)
• M27: 45,289,110 km (0.081 R)
• M28: 46,808,127 km (0.108 R)
• M29: 47,321,846 km (0.116 R)
• M30: 48,710,413 km (0.026 R)
• M31: 51,024,094 km (0.109 R)
• M32: 53,038,279 km (0.117 R)
• M33: 56,061,652 km (0.116 R)
• M34: 58,403,158 km (0.096 R)
• M35: 58,799,742 km (0.028 R)
• M36: 63,280,199 km (0.112 R)
• M37: 67,982,957 km (0.092 R)
• M38: 72,227,348 km (0.054 R)
• M39: 72,913,254 km (0.08 R)
• M40: 73,372,968 km (0.093 R)
• M41: 75,465,394 km (0.102 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 987.1

Radius: 4.2

Gravity: 55.96 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 11.26 AU - 18.34 AU

Year: 21450 Days

Day: 19.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 90,047,068 km

• M1: 52,210 km (0.095 R)
• M2: 232,325 km (0.045 R)
• M3: 502,200 km (0.095 R)
• M4: 719,566 km (0.068 R)
• M5: 1,280,857 km (0.095 R)
• M6: 1,492,388 km (0.079 R)
• M7: 1,670,709 km (0.116 R)
• M8: 2,656,110 km (0.089 R)
• M9: 4,078,487 km (0.112 R)
• M10: 4,216,117 km (0.114 R)
• M11: 7,257,442 km (0.098 R)
• M12: 10,382,840 km (0.059 R)
• M13: 14,781,466 km (0.115 R)
• M14: 16,631,094 km (0.043 R)
• M15: 19,201,036 km (0.087 R)
• M16: 23,313,631 km (0.036 R)
• M17: 25,808,026 km (0.117 R)
• M18: 32,535,293 km (0.078 R)
• M19: 53,966,085 km (0.028 R)
• M20: 54,543,683 km (0.075 R)
• M21: 64,571,079 km (0.116 R)
• M22: 76,241,059 km (0.098 R)
• M23: 85,274,227 km (0.097 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 341 - 16,417 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit