🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.47 AU - 0.71 AU

Year: 297 Days

Day: 12.5 Hours

Environment

Temp: -135 °C

Axial Tilt: 44.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 67,169,048 km

• M1: 62,682 km (0.099 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.33

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.44 AU - 0.74 AU

Year: 297 Days

Day: 35.8 Hours

Environment

Temp: -120 °C

Axial Tilt: 27.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.58

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 0.58 AU - 0.7 AU

Year: 336 Days

Day: 24.7 Hours

Environment

Temp: -139 °C

Axial Tilt: 27.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 672.2

Radius: 13.9

Gravity: 3.48 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.79 AU - 0.81 AU

Year: 469 Days

Day: 5.5 Hours

Environment

Temp: -139 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 67,169,048 km

• M1: 173,234 km (0.071 R)
• M2: 700,268 km (0.063 R)
• M3: 1,336,358 km (0.093 R)
• M4: 1,960,779 km (0.097 R)
• M5: 2,468,963 km (0.081 R)
• M6: 2,988,367 km (0.089 R)
• M7: 3,965,391 km (0.097 R)
• M8: 4,420,467 km (0.112 R)
• M9: 6,162,086 km (0.041 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 690.6

Radius: 9.7

Gravity: 7.34 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 1.87 AU - 3.03 AU

Year: 2516 Days

Day: 11.4 Hours

Environment

Temp: -193 °C

Axial Tilt: 49.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 67,169,048 km

• M1: 120,576 km (0.077 R)
• M2: 455,226 km (0.064 R)
• M3: 895,493 km (0.058 R)
• M4: 1,366,427 km (0.089 R)
• M5: 1,741,918 km (0.115 R)
• M6: 2,705,178 km (0.104 R)
• M7: 3,018,885 km (0.037 R)
• M8: 3,757,899 km (0.106 R)
• M9: 4,150,144 km (0.088 R)
• M10: 4,994,026 km (0.1 R)
• M11: 5,347,525 km (0.11 R)
• M12: 6,818,222 km (0.087 R)
• M13: 7,647,144 km (0.09 R)
• M14: 9,362,882 km (0.107 R)
• M15: 11,644,997 km (0.102 R)
• M16: 14,510,694 km (0.045 R)
• M17: 17,224,250 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 898.3

Radius: 11.2

Gravity: 7.16 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 4.12 AU - 4.32 AU

Year: 5687 Days

Day: 6.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 67,169,048 km

• M1: 139,425 km (0.099 R)
• M2: 593,006 km (0.117 R)
• M3: 1,088,624 km (0.078 R)
• M4: 1,730,698 km (0.082 R)
• M5: 2,504,717 km (0.104 R)
• M6: 3,279,335 km (0.054 R)
• M7: 4,081,927 km (0.062 R)
• M8: 5,389,862 km (0.088 R)
• M9: 7,284,519 km (0.074 R)
• M10: 7,810,804 km (0.085 R)
• M11: 8,981,856 km (0.109 R)
• M12: 10,128,225 km (0.118 R)
• M13: 11,924,147 km (0.027 R)
• M14: 12,656,279 km (0.032 R)
• M15: 14,267,598 km (0.12 R)
• M16: 15,032,791 km (0.075 R)
• M17: 19,063,257 km (0.094 R)
• M18: 19,630,981 km (0.118 R)
• M19: 20,064,066 km (0.114 R)
• M20: 22,015,271 km (0.081 R)
• M21: 23,196,795 km (0.061 R)
• M22: 24,921,210 km (0.055 R)
• M23: 27,892,074 km (0.089 R)
• M24: 29,274,957 km (0.07 R)
• M25: 30,317,654 km (0.065 R)
• M26: 32,880,565 km (0.074 R)
• M27: 33,697,220 km (0.092 R)
• M28: 34,737,224 km (0.119 R)
• M29: 35,371,369 km (0.037 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 150.8

Radius: 12.4

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 3.89 AU - 6.15 AU

Year: 7378 Days

Day: 11.3 Hours

Environment

Temp: -220 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 67,169,048 km

• M1: 154,385 km (0.068 R)
• M2: 726,896 km (0.062 R)
• M3: 1,668,166 km (0.103 R)
• M4: 2,279,423 km (0.1 R)
• M5: 3,106,699 km (0.028 R)
• M6: 3,689,383 km (0.083 R)
• M7: 4,830,515 km (0.1 R)
• M8: 6,425,079 km (0.106 R)
• M9: 7,215,704 km (0.088 R)
• M10: 7,934,372 km (0.065 R)
• M11: 11,686,137 km (0.084 R)
• M12: 12,265,529 km (0.075 R)
• M13: 13,385,718 km (0.088 R)
• M14: 13,773,925 km (0.036 R)
• M15: 20,861,573 km (0.095 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 126.6

Radius: 3.4

Gravity: 10.95 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 5.68 AU - 9.12 AU

Year: 13206 Days

Day: 17.1 Hours

Environment

Temp: -217 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 67,169,048 km

• M1: 42,336 km (0.098 R)
• M2: 192,383 km (0.043 R)
• M3: 612,454 km (0.104 R)
• M4: 778,358 km (0.12 R)
• M5: 1,366,726 km (0.117 R)
• M6: 2,579,666 km (0.079 R)
• M7: 3,113,580 km (0.096 R)
• M8: 3,856,633 km (0.108 R)
• M9: 4,737,615 km (0.1 R)
• M10: 5,239,217 km (0.069 R)
• M11: 5,532,877 km (0.111 R)
• M12: 7,238,592 km (0.095 R)
• M13: 10,824,453 km (0.089 R)
• M14: 11,739,992 km (0.112 R)
• M15: 12,344,068 km (0.106 R)
• M16: 13,450,494 km (0.098 R)
• M17: 16,286,122 km (0.088 R)
• M18: 16,910,095 km (0.053 R)
• M19: 21,804,787 km (0.102 R)
• M20: 22,257,171 km (0.115 R)
• M21: 23,572,735 km (0.114 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 431.5

Radius: 6.3

Gravity: 10.87 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 9.1 AU - 11 AU

Year: 20901 Days

Day: 17.9 Hours

Environment

Temp: -234 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 67,169,048 km

• M1: 78,389 km (0.097 R)
• M2: 304,731 km (0.089 R)
• M3: 773,421 km (0.064 R)
• M4: 1,114,055 km (0.098 R)
• M5: 2,155,406 km (0.109 R)
• M6: 2,692,014 km (0.11 R)
• M7: 4,908,306 km (0.109 R)
• M8: 5,375,351 km (0.076 R)
• M9: 6,151,315 km (0.1 R)
• M10: 7,544,520 km (0.066 R)
• M11: 8,414,431 km (0.076 R)
• M12: 8,977,967 km (0.055 R)
• M13: 10,998,735 km (0.076 R)
• M14: 12,243,389 km (0.119 R)
• M15: 12,634,288 km (0.082 R)
• M16: 13,100,884 km (0.097 R)
• M17: 15,157,406 km (0.056 R)
• M18: 15,990,666 km (0.117 R)
• M19: 16,457,860 km (0.064 R)
• M20: 16,854,145 km (0.111 R)
• M21: 20,620,271 km (0.089 R)
• M22: 22,893,710 km (0.071 R)
• M23: 24,808,114 km (0.111 R)
• M24: 25,645,114 km (0.091 R)
• M25: 26,717,731 km (0.041 R)
• M26: 27,931,718 km (0.041 R)
• M27: 31,672,113 km (0.045 R)
• M28: 49,642,557 km (0.111 R)
• M29: 53,005,518 km (0.06 R)
• M30: 54,043,278 km (0.081 R)
• M31: 55,802,848 km (0.075 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 389 - 16,873 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit