🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.6

Radius: 1.21

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.54 AU - 0.72 AU

Year: 328 Days

Day: 24 Hours

Environment

Temp: -133 °C

Axial Tilt: 27.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 69,116,952 km

• M1: 567,874 km (0.085 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.69

Radius: 1.49

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.57 AU - 0.71 AU

Year: 336 Days

Day: 29.8 Hours

Environment

Temp: -134 °C

Axial Tilt: 21.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 277.4

Radius: 9.2

Gravity: 3.28 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.88 AU - 1.06 AU

Year: 627 Days

Day: 10 Hours

Environment

Temp: -155 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 69,116,952 km

• M1: 114,442 km (0.088 R)
• M2: 449,691 km (0.079 R)
• M3: 759,209 km (0.064 R)
• M4: 1,092,513 km (0.093 R)
• M5: 1,619,547 km (0.041 R)
• M6: 1,930,561 km (0.082 R)
• M7: 2,371,575 km (0.102 R)
• M8: 2,931,071 km (0.11 R)
• M9: 3,282,327 km (0.052 R)
• M10: 3,661,707 km (0.103 R)
• M11: 3,991,271 km (0.115 R)
• M12: 5,432,497 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 16.5

Radius: 13.8

Gravity: 0.09 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.04 AU - 1.18 AU

Year: 767 Days

Day: 10.1 Hours

Environment

Temp: -168 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (2)

Outer Limit: 69,116,952 km

• M1: 172,337 km (0.065 R)
• M2: 1,699,133 km (0.064 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 286.9

Radius: 9.1

Gravity: 3.46 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 1.35 AU - 1.51 AU

Year: 1122 Days

Day: 14.3 Hours

Environment

Temp: -176 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 69,116,952 km

• M1: 113,545 km (0.117 R)
• M2: 463,005 km (0.086 R)
• M3: 749,336 km (0.056 R)
• M4: 1,075,309 km (0.066 R)
• M5: 1,828,984 km (0.09 R)
• M6: 2,220,032 km (0.084 R)
• M7: 2,543,912 km (0.103 R)
• M8: 2,863,602 km (0.114 R)
• M9: 3,274,847 km (0.093 R)
• M10: 3,739,648 km (0.03 R)
• M11: 4,263,240 km (0.073 R)
• M12: 4,700,066 km (0.101 R)
• M13: 6,232,546 km (0.105 R)
• M14: 6,604,596 km (0.112 R)
• M15: 7,302,620 km (0.096 R)
• M16: 7,716,408 km (0.115 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 878.4

Radius: 13.4

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 1.88 AU - 2.68 AU

Year: 2258 Days

Day: 12.2 Hours

Environment

Temp: -200 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 69,116,952 km

• M1: 166,652 km (0.113 R)
• M2: 731,534 km (0.08 R)
• M3: 1,168,210 km (0.061 R)
• M4: 1,710,203 km (0.11 R)
• M5: 2,192,806 km (0.101 R)
• M6: 2,691,415 km (0.076 R)
• M7: 3,248,967 km (0.105 R)
• M8: 4,598,489 km (0.076 R)
• M9: 5,092,162 km (0.108 R)
• M10: 6,160,291 km (0.105 R)
• M11: 7,372,632 km (0.078 R)
• M12: 7,799,883 km (0.09 R)
• M13: 8,738,311 km (0.085 R)
• M14: 9,252,479 km (0.106 R)
• M15: 12,472,423 km (0.1 R)
• M16: 13,618,493 km (0.077 R)
• M17: 14,264,157 km (0.049 R)
• M18: 15,766,419 km (0.084 R)
• M19: 17,640,731 km (0.082 R)
• M20: 18,800,413 km (0.115 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 483

Radius: 3.8

Gravity: 33.45 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 9.86 AU - 10.06 AU

Year: 20620 Days

Day: 19.3 Hours

Environment

Temp: -231 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 69,116,952 km

• M1: 47,722 km (0.088 R)
• M2: 289,771 km (0.057 R)
• M3: 456,872 km (0.059 R)
• M4: 642,373 km (0.076 R)
• M5: 1,026,092 km (0.084 R)
• M6: 1,483,712 km (0.106 R)
• M7: 2,551,990 km (0.044 R)
• M8: 3,433,570 km (0.062 R)
• M9: 3,748,175 km (0.104 R)
• M10: 3,927,692 km (0.085 R)
• M11: 4,601,631 km (0.04 R)
• M12: 4,772,920 km (0.082 R)
• M13: 4,948,249 km (0.09 R)
• M14: 6,468,014 km (0.088 R)
• M15: 8,475,467 km (0.112 R)
• M16: 9,155,689 km (0.11 R)
• M17: 10,983,775 km (0.109 R)
• M18: 11,228,218 km (0.072 R)
• M19: 11,664,595 km (0.071 R)
• M20: 12,571,008 km (0.084 R)
• M21: 14,304,997 km (0.101 R)
• M22: 16,668,344 km (0.083 R)
• M23: 16,991,027 km (0.116 R)
• M24: 20,176,564 km (0.064 R)
• M25: 20,635,381 km (0.079 R)
• M26: 22,540,510 km (0.092 R)
• M27: 22,737,231 km (0.119 R)
• M28: 23,034,482 km (0.105 R)
• M29: 23,334,276 km (0.068 R)
• M30: 23,636,763 km (0.095 R)
• M31: 24,146,592 km (0.086 R)
• M32: 25,188,242 km (0.079 R)
• M33: 25,934,885 km (0.095 R)
• M34: 29,891,001 km (0.055 R)
• M35: 30,128,413 km (0.12 R)
• M36: 31,702,930 km (0.115 R)
• M37: 40,114,220 km (0.096 R)
• M38: 40,839,172 km (0.11 R)
• M39: 44,286,654 km (0.058 R)
• M40: 46,160,069 km (0.108 R)
• M41: 48,085,692 km (0.084 R)
• M42: 52,096,112 km (0.063 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 433 - 18,034 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit