🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.05

Radius: 1.33

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.57 AU - 0.61 AU

Year: 170 Days

Day: 42.7 Hours

Environment

Temp: 174 °C

Axial Tilt: 1.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 64,186,292 km

• M1: 31,416 km (0.111 R)
• M2: 196,422 km (0.044 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.87 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.47

Radius: 1.17

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.69 AU - 1.05 AU

Year: 304 Days

Day: 42.3 Hours

Environment

Temp: 22 °C

Axial Tilt: 47.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.08 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.14

Radius: 0.46

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.99 AU - 1.17 AU

Year: 421 Days

Day: 23.3 Hours

Environment

Temp: 15 °C

Axial Tilt: 0.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 1.37 AU - 1.89 AU

Year: 780 Days

Day: 19.4 Hours

Environment

Temp: -64 °C

Axial Tilt: 38.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 64,186,292 km

• M1: 43,084 km (0.113 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.28

Radius: 1.1

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 2.25 AU - 2.31 AU

Year: 1290 Days

Day: 22 Hours

Environment

Temp: -77 °C

Axial Tilt: 6.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 64,186,292 km

• M1: 29,022 km (0.093 R)
• M2: 229,184 km (0.113 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.67

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 3.24 AU - 3.78 AU

Year: 2464 Days

Day: 27.1 Hours

Environment

Temp: -113 °C

Axial Tilt: 41.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 7.43 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 11.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 307.5

Radius: 10.1

Gravity: 3.01 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 9.5 AU - 13.18 AU

Year: 14310 Days

Day: 5.9 Hours

Environment

Temp: -176 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 64,186,292 km

• M1: 129,103 km (0.088 R)
• M2: 454,628 km (0.068 R)
• M3: 826,079 km (0.113 R)
• M4: 4,620,480 km (0.098 R)
• M5: 5,627,573 km (0.084 R)
• M6: 6,548,796 km (0.071 R)
• M7: 7,404,197 km (0.093 R)
• M8: 10,572,530 km (0.08 R)
• M9: 10,990,357 km (0.078 R)
• M10: 12,949,491 km (0.08 R)
• M11: 16,691,532 km (0.112 R)
• M12: 30,000,806 km (0.09 R)
• M13: 32,017,834 km (0.118 R)
• M14: 35,152,508 km (0.12 R)
• M15: 44,817,577 km (0.066 R)

Planet 8 - Ice Giant

Semi-Major Axis: 12.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 204.1

Radius: 4.5

Gravity: 10.08 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 9.98 AU - 14.88 AU

Year: 16422 Days

Day: 16.9 Hours

Environment

Temp: -198 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 64,186,292 km

• M1: 55,950 km (0.119 R)
• M2: 498,311 km (0.088 R)
• M3: 1,064,688 km (0.097 R)
• M4: 1,318,705 km (0.076 R)
• M5: 1,852,022 km (0.111 R)
• M6: 2,947,377 km (0.108 R)
• M7: 4,004,436 km (0.066 R)
• M8: 4,359,880 km (0.056 R)
• M9: 4,886,315 km (0.105 R)
• M10: 5,486,951 km (0.104 R)
• M11: 6,607,289 km (0.068 R)
• M12: 6,871,329 km (0.052 R)
• M13: 8,083,371 km (0.077 R)
• M14: 9,431,099 km (0.098 R)
• M15: 10,358,306 km (0.119 R)
• M16: 10,921,991 km (0.068 R)
• M17: 12,278,694 km (0.1 R)
• M18: 13,085,625 km (0.118 R)
• M19: 18,459,330 km (0.03 R)
• M20: 21,258,157 km (0.118 R)
• M21: 21,585,626 km (0.116 R)
• M22: 24,775,651 km (0.118 R)
• M23: 34,826,235 km (0.094 R)
• M24: 39,309,982 km (0.114 R)
• M25: 42,849,617 km (0.04 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 253.3

Radius: 6.5

Gravity: 6 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 15.89 AU - 17.43 AU

Year: 25482 Days

Day: 19.3 Hours

Environment

Temp: -207 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 64,186,292 km

• M1: 81,381 km (0.077 R)
• M2: 527,482 km (0.087 R)
• M3: 830,717 km (0.057 R)
• M4: 1,314,816 km (0.088 R)
• M5: 1,917,695 km (0.107 R)
• M6: 3,022,176 km (0.055 R)
• M7: 3,301,775 km (0.119 R)
• M8: 4,091,951 km (0.113 R)
• M9: 7,855,983 km (0.108 R)
• M10: 8,888,208 km (0.082 R)
• M11: 10,007,798 km (0.072 R)
• M12: 12,980,757 km (0.096 R)
• M13: 14,206,412 km (0.115 R)
• M14: 14,631,569 km (0.06 R)
• M15: 16,034,049 km (0.108 R)
• M16: 17,848,821 km (0.12 R)
• M17: 18,932,957 km (0.113 R)
• M18: 24,814,547 km (0.092 R)
• M19: 32,291,299 km (0.12 R)
• M20: 41,427,091 km (0.041 R)
• M21: 48,868,239 km (0.111 R)
• M22: 50,325,172 km (0.083 R)
• M23: 56,091,273 km (0.039 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 518 - 20,425 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit