🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.16

Radius: 1.06

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.5 AU - 0.54 AU

Year: 246 Days

Day: 30.9 Hours

Environment

Temp: -113 °C

Axial Tilt: 28.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.49

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.58 AU - 0.64 AU

Year: 313 Days

Day: 46.4 Hours

Environment

Temp: -134 °C

Axial Tilt: 5.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 71,350,833 km

• M1: 49,218 km (0.05 R)
• M2: 393,442 km (0.081 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.6

Radius: 12.1

Gravity: 0.6 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.82 AU - 1.1 AU

Year: 617 Days

Day: 5.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 71,350,833 km

• M1: 150,495 km (0.103 R)
• M2: 603,029 km (0.077 R)
• M3: 1,215,184 km (0.095 R)
• M4: 1,733,540 km (0.091 R)
• M5: 2,117,558 km (0.089 R)
• M6: 2,526,409 km (0.042 R)
• M7: 3,015,893 km (0.115 R)
• M8: 3,434,318 km (0.088 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 991.9

Radius: 13.2

Gravity: 5.69 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 1.91 AU - 1.93 AU

Year: 1745 Days

Day: 14.3 Hours

Environment

Temp: -180 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 71,350,833 km

• M1: 164,109 km (0.069 R)
• M2: 683,363 km (0.109 R)
• M3: 1,397,843 km (0.113 R)
• M4: 1,861,297 km (0.063 R)
• M5: 2,746,767 km (0.12 R)
• M6: 3,237,597 km (0.118 R)
• M7: 5,096,351 km (0.119 R)
• M8: 5,554,868 km (0.116 R)
• M9: 6,091,027 km (0.099 R)
• M10: 9,209,843 km (0.087 R)
• M11: 10,175,797 km (0.103 R)
• M12: 11,170,174 km (0.063 R)
• M13: 16,094,637 km (0.058 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 731.3

Radius: 11.3

Gravity: 5.73 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 2.01 AU - 2.69 AU

Year: 2363 Days

Day: 14 Hours

Environment

Temp: -192 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 71,350,833 km

• M1: 140,622 km (0.1 R)
• M2: 502,350 km (0.057 R)
• M3: 1,074,262 km (0.12 R)
• M4: 1,628,522 km (0.037 R)
• M5: 2,353,922 km (0.081 R)
• M6: 3,182,396 km (0.053 R)
• M7: 4,235,864 km (0.103 R)
• M8: 4,634,542 km (0.112 R)
• M9: 5,856,457 km (0.119 R)
• M10: 6,326,045 km (0.116 R)
• M11: 6,792,491 km (0.101 R)
• M12: 7,400,307 km (0.104 R)
• M13: 8,107,307 km (0.072 R)
• M14: 8,625,364 km (0.062 R)
• M15: 9,908,166 km (0.061 R)
• M16: 10,313,128 km (0.066 R)
• M17: 11,038,528 km (0.091 R)
• M18: 12,463,597 km (0.034 R)
• M19: 13,509,436 km (0.1 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 964.3

Radius: 6.9

Gravity: 20.25 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 5.58 AU - 6.62 AU

Year: 9883 Days

Day: 16.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 71,350,833 km

• M1: 92,900 km (0.116 R)
• M2: 468,391 km (0.119 R)
• M3: 767,736 km (0.077 R)
• M4: 1,110,166 km (0.12 R)
• M5: 1,733,391 km (0.092 R)
• M6: 1,980,975 km (0.071 R)
• M7: 2,631,277 km (0.113 R)
• M8: 3,944,597 km (0.095 R)
• M9: 4,228,982 km (0.118 R)
• M10: 6,082,201 km (0.084 R)
• M11: 6,501,224 km (0.092 R)
• M12: 6,777,831 km (0.113 R)
• M13: 7,021,077 km (0.068 R)
• M14: 9,481,513 km (0.116 R)
• M15: 9,941,078 km (0.115 R)
• M16: 13,776,169 km (0.1 R)
• M17: 16,892,592 km (0.035 R)
• M18: 19,456,250 km (0.048 R)
• M19: 21,129,951 km (0.118 R)
• M20: 22,806,943 km (0.089 R)
• M21: 23,538,776 km (0.069 R)
• M22: 31,740,031 km (0.066 R)
• M23: 32,537,088 km (0.083 R)
• M24: 47,462,916 km (0.081 R)
• M25: 47,759,120 km (0.091 R)
• M26: 50,325,920 km (0.118 R)
• M27: 50,788,328 km (0.116 R)
• M28: 52,192,304 km (0.103 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 401.6

Radius: 3.6

Gravity: 30.99 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 5.67 AU - 8.11 AU

Year: 11864 Days

Day: 18.8 Hours

Environment

Temp: -229 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 71,350,833 km

• M1: 44,879 km (0.06 R)
• M2: 162,762 km (0.088 R)
• M3: 289,621 km (0.081 R)
• M4: 437,424 km (0.086 R)
• M5: 721,660 km (0.098 R)
• M6: 1,382,883 km (0.093 R)
• M7: 2,003,714 km (0.117 R)
• M8: 2,175,452 km (0.029 R)
• M9: 2,338,364 km (0.066 R)
• M10: 2,451,460 km (0.108 R)
• M11: 2,729,712 km (0.061 R)
• M12: 3,691,178 km (0.099 R)
• M13: 4,648,754 km (0.104 R)
• M14: 4,828,122 km (0.096 R)
• M15: 5,264,499 km (0.09 R)
• M16: 6,002,764 km (0.115 R)
• M17: 7,078,074 km (0.1 R)
• M18: 7,890,390 km (0.053 R)
• M19: 8,762,994 km (0.058 R)
• M20: 10,492,495 km (0.114 R)
• M21: 11,010,403 km (0.081 R)
• M22: 11,436,907 km (0.108 R)
• M23: 11,654,273 km (0.1 R)
• M24: 13,796,963 km (0.115 R)
• M25: 14,043,351 km (0.027 R)
• M26: 14,418,243 km (0.061 R)
• M27: 19,298,125 km (0.079 R)
• M28: 20,550,110 km (0.109 R)
• M29: 24,538,838 km (0.033 R)
• M30: 26,571,275 km (0.086 R)
• M31: 29,928,700 km (0.094 R)
• M32: 32,029,951 km (0.065 R)
• M33: 32,570,149 km (0.111 R)
• M34: 32,787,964 km (0.097 R)
• M35: 42,060,339 km (0.077 R)
• M36: 43,758,275 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 715.4

Radius: 6.4

Gravity: 17.47 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 8.84 AU - 9.2 AU

Year: 17771 Days

Day: 15.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 14.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 71,350,833 km

• M1: 86,468 km (0.106 R)
• M2: 320,139 km (0.06 R)
• M3: 600,037 km (0.105 R)
• M4: 1,627,475 km (0.105 R)
• M5: 2,307,248 km (0.118 R)
• M6: 2,594,625 km (0.078 R)
• M7: 3,057,481 km (0.112 R)
• M8: 3,432,673 km (0.074 R)
• M9: 3,689,682 km (0.09 R)
• M10: 4,083,723 km (0.049 R)
• M11: 4,709,640 km (0.083 R)
• M12: 5,397,790 km (0.111 R)
• M13: 6,793,090 km (0.11 R)
• M14: 7,062,216 km (0.08 R)
• M15: 8,210,530 km (0.073 R)
• M16: 9,589,523 km (0.101 R)
• M17: 10,043,253 km (0.099 R)
• M18: 12,067,163 km (0.088 R)
• M19: 12,462,400 km (0.058 R)
• M20: 13,558,354 km (0.101 R)
• M21: 16,177,364 km (0.111 R)
• M22: 20,291,605 km (0.071 R)
• M23: 20,569,857 km (0.102 R)
• M24: 21,515,315 km (0.075 R)
• M25: 22,096,353 km (0.109 R)
• M26: 27,919,451 km (0.098 R)
• M27: 30,874,607 km (0.066 R)
• M28: 33,126,952 km (0.063 R)
• M29: 33,383,812 km (0.105 R)
• M30: 35,890,474 km (0.068 R)
• M31: 44,469,912 km (0.111 R)
• M32: 57,407,136 km (0.103 R)
• M33: 69,443,780 km (0.09 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 535 - 15,598 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit