🌌 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: 2.55

Radius: 1.45

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.49 AU - 0.71 AU

Year: 305 Days

Day: 26.1 Hours

Environment

Temp: -123 °C

Axial Tilt: 34.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 220.1

Radius: 14.2

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 0.89 AU - 0.91 AU

Year: 560 Days

Day: 9.1 Hours

Environment

Temp: -163 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 32,690,485 km

• M1: 176,525 km (0.106 R)
• M2: 651,200 km (0.088 R)
• M3: 1,171,501 km (0.107 R)
• M4: 1,690,755 km (0.049 R)
• M5: 2,145,383 km (0.112 R)
• M6: 2,636,962 km (0.083 R)
• M7: 3,342,166 km (0.085 R)
• M8: 3,793,353 km (0.059 R)
• M9: 4,375,738 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 108.1

Radius: 9.5

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 1.29 AU - 1.33 AU

Year: 984 Days

Day: 12.7 Hours

Environment

Temp: -162 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 32,690,485 km

• M1: 118,182 km (0.075 R)
• M2: 448,494 km (0.045 R)
• M3: 1,628,971 km (0.101 R)
• M4: 2,034,980 km (0.092 R)
• M5: 3,365,354 km (0.045 R)
• M6: 3,786,322 km (0.102 R)
• M7: 4,807,776 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 896.7

Radius: 13

Gravity: 5.31 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 1.18 AU - 1.76 AU

Year: 1169 Days

Day: 6.5 Hours

Environment

Temp: -175 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 32,690,485 km

• M1: 162,014 km (0.093 R)
• M2: 574,905 km (0.102 R)
• M3: 1,180,327 km (0.104 R)
• M4: 1,690,157 km (0.102 R)
• M5: 2,265,959 km (0.12 R)
• M6: 2,834,880 km (0.113 R)
• M7: 3,256,147 km (0.102 R)
• M8: 3,719,601 km (0.054 R)
• M9: 4,352,251 km (0.105 R)
• M10: 5,989,600 km (0.058 R)
• M11: 6,714,401 km (0.11 R)
• M12: 7,263,575 km (0.058 R)
• M13: 10,772,393 km (0.105 R)
• M14: 11,282,971 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 275.8

Radius: 8.6

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 1.56 AU - 2.52 AU

Year: 1911 Days

Day: 9.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 32,690,485 km

• M1: 106,962 km (0.057 R)
• M2: 593,156 km (0.108 R)
• M3: 874,400 km (0.116 R)
• M4: 1,153,400 km (0.086 R)
• M5: 1,426,416 km (0.106 R)
• M6: 1,771,837 km (0.11 R)
• M7: 2,250,850 km (0.087 R)
• M8: 2,774,592 km (0.096 R)
• M9: 3,215,307 km (0.073 R)
• M10: 3,930,086 km (0.093 R)
• M11: 4,487,039 km (0.117 R)
• M12: 5,075,706 km (0.051 R)
• M13: 5,998,575 km (0.113 R)
• M14: 7,128,488 km (0.045 R)
• M15: 7,586,856 km (0.074 R)
• M16: 9,169,003 km (0.087 R)
• M17: 9,558,706 km (0.062 R)
• M18: 10,695,500 km (0.037 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 798.8

Radius: 9

Gravity: 9.86 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 2.13 AU - 2.77 AU

Year: 2516 Days

Day: 10.7 Hours

Environment

Temp: -197 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 32,690,485 km

• M1: 112,198 km (0.05 R)
• M2: 455,226 km (0.084 R)
• M3: 954,584 km (0.11 R)
• M4: 1,297,911 km (0.114 R)
• M5: 1,815,071 km (0.068 R)
• M6: 2,109,330 km (0.062 R)
• M7: 2,596,121 km (0.06 R)
• M8: 2,890,979 km (0.079 R)
• M9: 3,260,186 km (0.103 R)
• M10: 3,775,850 km (0.106 R)
• M11: 4,430,640 km (0.082 R)
• M12: 5,135,246 km (0.061 R)
• M13: 5,807,988 km (0.112 R)
• M14: 6,823,907 km (0.048 R)
• M15: 8,819,692 km (0.104 R)
• M16: 9,932,251 km (0.063 R)
• M17: 10,464,371 km (0.066 R)
• M18: 10,856,018 km (0.095 R)
• M19: 14,302,304 km (0.107 R)
• M20: 15,680,998 km (0.074 R)
• M21: 16,350,299 km (0.115 R)
• M22: 17,690,846 km (0.117 R)
• M23: 18,359,847 km (0.081 R)
• M24: 18,815,074 km (0.115 R)
• M25: 19,688,875 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 614.7

Radius: 14.5

Gravity: 2.92 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 2.33 AU - 2.69 AU

Year: 2609 Days

Day: 7.9 Hours

Environment

Temp: -199 °C

Axial Tilt: 140.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 32,690,485 km

• M1: 180,714 km (0.119 R)
• M2: 915,090 km (0.101 R)
• M3: 1,565,392 km (0.083 R)
• M4: 4,098,533 km (0.092 R)
• M5: 4,944,658 km (0.038 R)
• M6: 6,268,749 km (0.076 R)
• M7: 6,731,306 km (0.062 R)
• M8: 8,649,001 km (0.117 R)
• M9: 9,680,777 km (0.043 R)
• M10: 11,103,603 km (0.074 R)
• M11: 13,583,337 km (0.056 R)
• M12: 15,461,987 km (0.053 R)
• M13: 17,508,336 km (0.087 R)
• M14: 18,320,503 km (0.11 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 188.3

Radius: 12.3

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 3.64 AU - 5.94 AU

Year: 6877 Days

Day: 12.1 Hours

Environment

Temp: -214 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 32,690,485 km

• M1: 153,039 km (0.096 R)
• M2: 660,325 km (0.069 R)
• M3: 1,241,662 km (0.111 R)
• M4: 1,815,969 km (0.111 R)
• M5: 2,991,808 km (0.041 R)
• M6: 3,704,791 km (0.082 R)
• M7: 6,215,343 km (0.078 R)
• M8: 13,311,817 km (0.106 R)
• M9: 16,042,427 km (0.078 R)
• M10: 16,428,988 km (0.107 R)
• M11: 18,759,274 km (0.116 R)
• M12: 24,282,577 km (0.1 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 413.8

Radius: 8.5

Gravity: 5.73 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 4.23 AU - 5.69 AU

Year: 7247 Days

Day: 6.1 Hours

Environment

Temp: -219 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 32,690,485 km

• M1: 106,514 km (0.115 R)
• M2: 394,789 km (0.099 R)
• M3: 852,109 km (0.1 R)
• M4: 1,824,047 km (0.09 R)
• M5: 2,175,602 km (0.079 R)
• M6: 2,696,352 km (0.08 R)
• M7: 3,175,065 km (0.029 R)
• M8: 3,467,230 km (0.063 R)
• M9: 3,731,868 km (0.062 R)
• M10: 4,453,529 km (0.112 R)
• M11: 5,293,820 km (0.109 R)
• M12: 6,300,314 km (0.079 R)
• M13: 8,528,126 km (0.053 R)
• M14: 9,095,700 km (0.078 R)
• M15: 9,559,154 km (0.097 R)
• M16: 10,533,336 km (0.091 R)
• M17: 13,688,056 km (0.098 R)
• M18: 15,808,007 km (0.029 R)
• M19: 16,478,205 km (0.091 R)
• M20: 16,977,563 km (0.098 R)
• M21: 22,845,390 km (0.099 R)
• M22: 23,310,041 km (0.095 R)
• M23: 24,660,611 km (0.11 R)
• M24: 25,728,141 km (0.068 R)
• M25: 27,517,032 km (0.075 R)
• M26: 29,661,368 km (0.029 R)
• M27: 30,307,182 km (0.081 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 482 - 15,018 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit