🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.59 AU - 0.75 AU

Year: 360 Days

Day: 33.6 Hours

Environment

Temp: -138 °C

Axial Tilt: 33.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 569.5

Radius: 12.8

Gravity: 3.48 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.92 AU - 1.14 AU

Year: 686 Days

Day: 13 Hours

Environment

Temp: -167 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 58,558,669 km

• M1: 159,172 km (0.103 R)
• M2: 683,662 km (0.108 R)
• M3: 1,265,897 km (0.044 R)
• M4: 1,895,405 km (0.117 R)
• M5: 3,507,621 km (0.104 R)
• M6: 6,009,496 km (0.049 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 813.1

Radius: 14.1

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 0.89 AU - 1.33 AU

Year: 767 Days

Day: 13 Hours

Environment

Temp: -158 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 58,558,669 km

• M1: 175,478 km (0.097 R)
• M2: 680,371 km (0.101 R)
• M3: 1,138,589 km (0.069 R)
• M4: 2,145,981 km (0.101 R)
• M5: 2,689,471 km (0.085 R)
• M6: 3,802,628 km (0.072 R)
• M7: 4,310,663 km (0.056 R)
• M8: 4,881,379 km (0.091 R)
• M9: 5,892,062 km (0.076 R)
• M10: 6,903,792 km (0.111 R)
• M11: 8,557,148 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 293.4

Radius: 13.6

Gravity: 1.59 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 0.94 AU - 1.44 AU

Year: 852 Days

Day: 12.8 Hours

Environment

Temp: -172 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 58,558,669 km

• M1: 169,195 km (0.046 R)
• M2: 914,492 km (0.099 R)
• M3: 1,500,766 km (0.098 R)
• M4: 2,401,345 km (0.104 R)
• M5: 3,013,799 km (0.119 R)
• M6: 3,508,369 km (0.026 R)
• M7: 6,592,479 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 307.5

Radius: 8.5

Gravity: 4.26 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.03 AU - 1.39 AU

Year: 873 Days

Day: 13.8 Hours

Environment

Temp: -168 °C

Axial Tilt: 50 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 58,558,669 km

• M1: 105,766 km (0.079 R)
• M2: 416,181 km (0.107 R)
• M3: 839,992 km (0.059 R)
• M4: 1,171,351 km (0.047 R)
• M5: 1,523,355 km (0.076 R)
• M6: 1,945,520 km (0.062 R)
• M7: 3,254,950 km (0.058 R)
• M8: 4,131,594 km (0.075 R)
• M9: 4,760,503 km (0.061 R)
• M10: 5,923,776 km (0.097 R)
• M11: 6,383,341 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 448.2

Radius: 9.3

Gravity: 5.18 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 1.01 AU - 1.51 AU

Year: 928 Days

Day: 6.6 Hours

Environment

Temp: -165 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 58,558,669 km

• M1: 119,379 km (0.12 R)
• M2: 423,512 km (0.108 R)
• M3: 1,665,473 km (0.075 R)
• M4: 2,891,428 km (0.108 R)
• M5: 3,693,272 km (0.096 R)
• M6: 4,200,858 km (0.101 R)
• M7: 4,788,179 km (0.075 R)
• M8: 5,227,698 km (0.104 R)
• M9: 6,392,766 km (0.083 R)
• M10: 7,305,762 km (0.091 R)
• M11: 8,180,012 km (0.12 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 946.2

Radius: 13.5

Gravity: 5.19 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 1.05 AU - 1.69 AU

Year: 1052 Days

Day: 5.7 Hours

Environment

Temp: -169 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 58,558,669 km

• M1: 170,542 km (0.111 R)
• M2: 688,150 km (0.091 R)
• M3: 1,347,129 km (0.092 R)
• M4: 3,711,074 km (0.12 R)
• M5: 4,508,880 km (0.076 R)
• M6: 5,397,790 km (0.075 R)
• M7: 5,841,049 km (0.097 R)
• M8: 6,729,361 km (0.115 R)
• M9: 8,105,661 km (0.105 R)
• M10: 10,318,663 km (0.112 R)
• M11: 11,651,131 km (0.06 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 89.7

Radius: 14.5

Gravity: 0.43 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 1.74 AU - 2.72 AU

Year: 2185 Days

Day: 13 Hours

Environment

Temp: -202 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 58,558,669 km

• M1: 180,864 km (0.109 R)
• M2: 632,799 km (0.069 R)
• M3: 1,101,340 km (0.077 R)
• M4: 2,029,894 km (0.119 R)
• M5: 3,146,791 km (0.046 R)
• M6: 3,699,256 km (0.094 R)
• M7: 4,190,536 km (0.038 R)
• M8: 4,675,233 km (0.052 R)
• M9: 5,566,986 km (0.116 R)
• M10: 6,034,030 km (0.117 R)
• M11: 6,958,994 km (0.078 R)
• M12: 7,665,993 km (0.085 R)
• M13: 8,648,702 km (0.095 R)

Asteroid Belt

Center: 3.99 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Gas Giant

Semi-Major Axis: 5.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 728.2

Radius: 12.3

Gravity: 4.81 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 5.12 AU - 6.38 AU

Year: 9045 Days

Day: 14.1 Hours

Environment

Temp: -220 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 58,558,669 km

• M1: 153,039 km (0.098 R)
• M2: 631,901 km (0.086 R)
• M3: 1,132,755 km (0.061 R)
• M4: 1,836,763 km (0.082 R)
• M5: 2,245,314 km (0.101 R)
• M6: 3,678,312 km (0.096 R)
• M7: 4,117,382 km (0.099 R)
• M8: 4,917,731 km (0.109 R)
• M9: 5,683,821 km (0.12 R)
• M10: 9,096,299 km (0.079 R)
• M11: 10,916,157 km (0.08 R)
• M12: 15,068,246 km (0.107 R)
• M13: 15,861,264 km (0.095 R)
• M14: 18,038,661 km (0.108 R)
• M15: 20,971,228 km (0.107 R)
• M16: 26,226,900 km (0.033 R)
• M17: 27,277,377 km (0.085 R)
• M18: 29,157,672 km (0.065 R)
• M19: 31,334,770 km (0.113 R)
• M20: 33,618,082 km (0.104 R)
• M21: 34,857,501 km (0.072 R)
• M22: 40,120,653 km (0.102 R)
• M23: 43,072,219 km (0.065 R)
• M24: 44,131,821 km (0.117 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 590.9

Radius: 3.9

Gravity: 38.85 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 5.92 AU - 9.86 AU

Year: 14539 Days

Day: 20.6 Hours

Environment

Temp: -231 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 58,558,669 km

• M1: 72,256 km (0.071 R)
• M2: 262,245 km (0.09 R)
• M3: 509,530 km (0.097 R)
• M4: 898,485 km (0.056 R)
• M5: 1,692,251 km (0.113 R)
• M6: 2,267,904 km (0.098 R)
• M7: 2,688,423 km (0.115 R)
• M8: 3,737,254 km (0.109 R)
• M9: 4,831,562 km (0.106 R)
• M10: 5,780,911 km (0.06 R)
• M11: 7,583,864 km (0.034 R)
• M12: 7,809,906 km (0.077 R)
• M13: 10,378,951 km (0.086 R)
• M14: 11,822,570 km (0.042 R)
• M15: 12,126,403 km (0.118 R)
• M16: 12,877,235 km (0.098 R)
• M17: 13,069,618 km (0.073 R)
• M18: 20,813,402 km (0.112 R)
• M19: 21,078,490 km (0.119 R)
• M20: 21,345,821 km (0.074 R)
• M21: 22,069,875 km (0.077 R)
• M22: 26,552,724 km (0.116 R)
• M23: 28,136,218 km (0.105 R)
• M24: 29,336,741 km (0.091 R)
• M25: 35,981,130 km (0.101 R)
• M26: 42,702,413 km (0.101 R)
• M27: 46,056,846 km (0.075 R)
• M28: 48,956,950 km (0.07 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 243 - 12,558 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit