🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.34

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.54 AU - 0.66 AU

Year: 300 Days

Day: 14.8 Hours

Environment

Temp: -131 °C

Axial Tilt: 26.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 58,229,026 km

• M1: 475,871 km (0.112 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 72.7

Radius: 9.6

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 0.79 AU - 0.85 AU

Year: 479 Days

Day: 8.4 Hours

Environment

Temp: -140 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 58,229,026 km

• M1: 119,379 km (0.091 R)
• M2: 429,495 km (0.049 R)
• M3: 866,172 km (0.078 R)
• M4: 1,174,942 km (0.078 R)
• M5: 1,693,298 km (0.106 R)
• M6: 2,592,681 km (0.038 R)
• M7: 2,935,110 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 390

Radius: 13.3

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 1.06 AU - 1.12 AU

Year: 735 Days

Day: 8.9 Hours

Environment

Temp: -172 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 58,229,026 km

• M1: 166,203 km (0.064 R)
• M2: 630,854 km (0.034 R)
• M3: 1,201,420 km (0.039 R)
• M4: 1,687,165 km (0.105 R)
• M5: 2,220,930 km (0.095 R)
• M6: 2,933,764 km (0.103 R)
• M7: 3,406,643 km (0.111 R)
• M8: 4,013,860 km (0.106 R)
• M9: 4,478,063 km (0.117 R)
• M10: 5,026,937 km (0.071 R)
• M11: 5,603,039 km (0.076 R)
• M12: 6,355,965 km (0.068 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 253.9

Radius: 13

Gravity: 1.5 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 4.63 AU - 5.05 AU

Year: 6875 Days

Day: 9 Hours

Environment

Temp: -206 °C

Axial Tilt: 44.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 58,229,026 km

• M1: 169,345 km (0.099 R)
• M2: 791,971 km (0.097 R)
• M3: 1,534,126 km (0.032 R)
• M4: 2,281,368 km (0.117 R)
• M5: 3,494,157 km (0.064 R)
• M6: 3,953,573 km (0.115 R)
• M7: 4,501,101 km (0.116 R)
• M8: 7,150,329 km (0.105 R)
• M9: 10,447,766 km (0.12 R)
• M10: 12,523,287 km (0.108 R)
• M11: 13,811,324 km (0.104 R)
• M12: 20,119,418 km (0.081 R)
• M13: 22,023,200 km (0.101 R)
• M14: 26,029,431 km (0.1 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 847.3

Radius: 4.2

Gravity: 48.03 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 6.23 AU - 8.19 AU

Year: 12500 Days

Day: 24.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 24.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 58,229,026 km

• M1: 52,808 km (0.093 R)
• M2: 261,796 km (0.111 R)
• M3: 816,655 km (0.071 R)
• M4: 1,492,089 km (0.07 R)
• M5: 1,679,087 km (0.112 R)
• M6: 2,976,998 km (0.067 R)
• M7: 3,756,702 km (0.074 R)
• M8: 4,015,057 km (0.059 R)
• M9: 5,133,900 km (0.066 R)
• M10: 6,245,861 km (0.1 R)
• M11: 9,085,228 km (0.105 R)
• M12: 11,812,547 km (0.065 R)
• M13: 13,460,068 km (0.119 R)
• M14: 16,739,403 km (0.111 R)
• M15: 19,059,068 km (0.091 R)
• M16: 26,033,171 km (0.09 R)
• M17: 33,549,566 km (0.07 R)
• M18: 34,533,472 km (0.073 R)
• M19: 40,016,533 km (0.112 R)
• M20: 46,202,704 km (0.048 R)
• M21: 46,353,648 km (0.077 R)
• M22: 59,172,091 km (0.082 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 104.5

Radius: 7

Gravity: 2.13 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 7.43 AU - 8.01 AU

Year: 13850 Days

Day: 24.1 Hours

Environment

Temp: -231 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 58,229,026 km

• M1: 88,712 km (0.088 R)
• M2: 565,330 km (0.073 R)
• M3: 783,743 km (0.113 R)
• M4: 1,884,036 km (0.079 R)
• M5: 2,242,472 km (0.075 R)
• M6: 3,115,974 km (0.087 R)
• M7: 3,730,073 km (0.118 R)
• M8: 3,959,556 km (0.055 R)
• M9: 4,498,109 km (0.088 R)
• M10: 5,196,132 km (0.076 R)
• M11: 6,976,198 km (0.115 R)
• M12: 9,847,280 km (0.085 R)
• M13: 13,051,666 km (0.052 R)
• M14: 20,272,606 km (0.058 R)
• M15: 21,274,612 km (0.12 R)
• M16: 24,081,068 km (0.102 R)
• M17: 24,960,704 km (0.056 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 106.2

Radius: 3.2

Gravity: 10.37 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 6.51 AU - 10.29 AU

Year: 15719 Days

Day: 21.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 58,229,026 km

• M1: 39,793 km (0.057 R)
• M2: 139,425 km (0.063 R)
• M3: 326,423 km (0.101 R)
• M4: 502,649 km (0.091 R)
• M5: 794,963 km (0.081 R)
• M6: 1,278,164 km (0.099 R)
• M7: 2,471,656 km (0.081 R)
• M8: 3,468,726 km (0.113 R)
• M9: 4,006,829 km (0.106 R)
• M10: 4,789,376 km (0.106 R)
• M11: 5,042,795 km (0.092 R)
• M12: 5,364,580 km (0.115 R)
• M13: 6,048,840 km (0.106 R)
• M14: 6,930,121 km (0.062 R)
• M15: 10,639,251 km (0.082 R)
• M16: 12,590,755 km (0.107 R)
• M17: 13,456,029 km (0.098 R)
• M18: 14,827,094 km (0.061 R)
• M19: 15,124,046 km (0.057 R)
• M20: 16,351,496 km (0.093 R)
• M21: 16,541,186 km (0.11 R)
• M22: 18,314,819 km (0.114 R)
• M23: 21,169,295 km (0.117 R)
• M24: 22,389,416 km (0.084 R)
• M25: 28,371,835 km (0.071 R)
• M26: 33,069,058 km (0.105 R)
• M27: 33,372,293 km (0.11 R)
• M28: 34,812,472 km (0.071 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 672.1

Radius: 6.3

Gravity: 16.93 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 6.65 AU - 10.37 AU

Year: 16029 Days

Day: 23.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 58,229,026 km

• M1: 78,389 km (0.12 R)
• M2: 325,675 km (0.04 R)
• M3: 699,220 km (0.078 R)
• M4: 1,250,189 km (0.094 R)
• M5: 1,463,217 km (0.1 R)
• M6: 2,871,980 km (0.089 R)
• M7: 3,682,052 km (0.095 R)
• M8: 4,124,563 km (0.1 R)
• M9: 5,590,921 km (0.042 R)
• M10: 6,973,654 km (0.084 R)
• M11: 7,791,057 km (0.066 R)
• M12: 8,321,232 km (0.05 R)
• M13: 11,097,320 km (0.117 R)
• M14: 12,018,543 km (0.119 R)
• M15: 13,803,545 km (0.092 R)
• M16: 16,526,526 km (0.05 R)
• M17: 20,475,760 km (0.106 R)
• M18: 20,747,280 km (0.049 R)
• M19: 21,021,343 km (0.108 R)
• M20: 23,399,052 km (0.076 R)
• M21: 26,696,488 km (0.092 R)
• M22: 29,135,083 km (0.082 R)
• M23: 30,761,810 km (0.051 R)
• M24: 33,689,889 km (0.073 R)
• M25: 35,872,971 km (0.107 R)
• M26: 38,012,071 km (0.119 R)
• M27: 38,697,528 km (0.118 R)
• M28: 41,090,047 km (0.069 R)
• M29: 45,857,881 km (0.096 R)
• M30: 47,262,306 km (0.1 R)
• M31: 50,321,133 km (0.115 R)
• M32: 54,024,728 km (0.087 R)
• M33: 57,545,813 km (0.087 R)
• M34: 58,996,015 km (0.119 R)
• M35: 61,216,645 km (0.114 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 285.9

Radius: 3.9

Gravity: 18.8 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 8.55 AU - 11.65 AU

Year: 20725 Days

Day: 23.8 Hours

Environment

Temp: -239 °C

Axial Tilt: 158 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 58,229,026 km

• M1: 59,839 km (0.109 R)
• M2: 211,531 km (0.096 R)
• M3: 334,351 km (0.051 R)
• M4: 738,116 km (0.032 R)
• M5: 1,395,299 km (0.104 R)
• M6: 1,731,895 km (0.044 R)
• M7: 2,831,439 km (0.079 R)
• M8: 3,141,256 km (0.105 R)
• M9: 4,358,983 km (0.092 R)
• M10: 4,578,144 km (0.034 R)
• M11: 4,937,328 km (0.078 R)
• M12: 5,106,673 km (0.106 R)
• M13: 5,601,543 km (0.045 R)
• M14: 7,995,408 km (0.108 R)
• M15: 13,914,547 km (0.05 R)
• M16: 17,862,285 km (0.094 R)
• M17: 18,504,209 km (0.096 R)
• M18: 21,315,004 km (0.111 R)
• M19: 32,010,204 km (0.077 R)
• M20: 35,401,588 km (0.085 R)
• M21: 36,925,691 km (0.086 R)
• M22: 57,706,930 km (0.115 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 334 - 14,778 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit