🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.18

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.46 AU - 0.6 AU

Year: 249 Days

Day: 12.7 Hours

Environment

Temp: -126 °C

Axial Tilt: 21.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 942.9

Radius: 13.3

Gravity: 5.33 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.74 AU - 1.12 AU

Year: 579 Days

Day: 11.5 Hours

Environment

Temp: -148 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 52,409,379 km

• M1: 167,101 km (0.111 R)
• M2: 629,059 km (0.084 R)
• M3: 1,096,253 km (0.091 R)
• M4: 1,674,599 km (0.06 R)
• M5: 2,381,897 km (0.049 R)
• M6: 2,950,818 km (0.115 R)
• M7: 4,227,187 km (0.115 R)
• M8: 4,682,862 km (0.087 R)
• M9: 5,768,494 km (0.084 R)
• M10: 6,211,603 km (0.042 R)
• M11: 6,719,188 km (0.058 R)
• M12: 7,166,785 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 511.8

Radius: 9.6

Gravity: 5.55 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.98 AU - 1.2 AU

Year: 735 Days

Day: 12.6 Hours

Environment

Temp: -169 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 52,409,379 km

• M1: 119,678 km (0.116 R)
• M2: 618,288 km (0.09 R)
• M3: 1,098,198 km (0.042 R)
• M4: 2,134,762 km (0.097 R)
• M5: 2,439,642 km (0.093 R)
• M6: 4,651,147 km (0.082 R)
• M7: 7,540,481 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 28.8

Radius: 8

Gravity: 0.45 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 1.32 AU - 1.48 AU

Year: 1070 Days

Day: 10.1 Hours

Environment

Temp: -178 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 52,409,379 km

• M1: 100,081 km (0.096 R)
• M2: 537,505 km (0.097 R)
• M3: 805,435 km (0.054 R)
• M4: 1,071,420 km (0.103 R)
• M5: 2,100,653 km (0.114 R)
• M6: 2,720,587 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 46.6

Radius: 13.5

Gravity: 0.26 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.38 AU - 1.98 AU

Year: 1406 Days

Day: 5.8 Hours

Environment

Temp: -189 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 52,409,379 km

• M1: 167,849 km (0.089 R)
• M2: 592,408 km (0.119 R)
• M3: 1,750,445 km (0.048 R)
• M4: 3,182,545 km (0.111 R)
• M5: 3,706,736 km (0.062 R)
• M6: 4,872,403 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 268.2

Radius: 8

Gravity: 4.19 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 2.08 AU - 2.7 AU

Year: 2386 Days

Day: 14.1 Hours

Environment

Temp: -199 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 52,409,379 km

• M1: 99,782 km (0.097 R)
• M2: 365,916 km (0.103 R)
• M3: 678,426 km (0.061 R)
• M4: 1,105,678 km (0.066 R)
• M5: 1,552,676 km (0.05 R)
• M6: 1,844,392 km (0.118 R)
• M7: 2,161,240 km (0.105 R)
• M8: 2,684,983 km (0.085 R)
• M9: 3,352,638 km (0.105 R)
• M10: 4,555,554 km (0.107 R)
• M11: 4,851,160 km (0.102 R)
• M12: 6,428,819 km (0.115 R)
• M13: 8,586,020 km (0.074 R)
• M14: 9,892,608 km (0.075 R)
• M15: 13,488,492 km (0.092 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 96.2

Radius: 12.1

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 2.38 AU - 2.63 AU

Year: 2552 Days

Day: 7.7 Hours

Environment

Temp: -189 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,409,379 km

• M1: 165,156 km (0.102 R)
• M2: 592,258 km (0.05 R)
• M3: 1,422,227 km (0.064 R)
• M4: 1,829,432 km (0.066 R)
• M5: 2,678,849 km (0.073 R)
• M6: 3,366,251 km (0.076 R)
• M7: 4,233,470 km (0.096 R)
• M8: 4,675,981 km (0.09 R)
• M9: 5,168,307 km (0.085 R)
• M10: 6,742,825 km (0.055 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 914.6

Radius: 8.9

Gravity: 11.55 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.99 AU - 3.27 AU

Year: 2754 Days

Day: 7.8 Hours

Environment

Temp: -197 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 52,409,379 km

• M1: 110,852 km (0.095 R)
• M2: 399,127 km (0.028 R)
• M3: 766,539 km (0.107 R)
• M4: 1,340,247 km (0.108 R)
• M5: 1,734,288 km (0.102 R)
• M6: 2,906,238 km (0.109 R)
• M7: 3,218,449 km (0.091 R)
• M8: 3,890,592 km (0.049 R)
• M9: 4,184,552 km (0.055 R)
• M10: 4,793,565 km (0.103 R)
• M11: 5,131,955 km (0.077 R)
• M12: 5,460,322 km (0.073 R)
• M13: 5,829,829 km (0.1 R)
• M14: 7,768,617 km (0.09 R)
• M15: 8,168,642 km (0.039 R)
• M16: 8,652,741 km (0.079 R)
• M17: 9,119,187 km (0.117 R)
• M18: 11,450,221 km (0.078 R)
• M19: 11,837,829 km (0.111 R)
• M20: 15,572,390 km (0.108 R)
• M21: 16,101,817 km (0.118 R)
• M22: 16,973,973 km (0.097 R)
• M23: 20,463,044 km (0.085 R)
• M24: 21,812,267 km (0.115 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 343

Radius: 10.9

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 2.76 AU - 4.4 AU

Year: 4374 Days

Day: 12.8 Hours

Environment

Temp: -218 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 52,409,379 km

• M1: 135,835 km (0.039 R)
• M2: 904,618 km (0.111 R)
• M3: 1,520,064 km (0.112 R)
• M4: 1,917,246 km (0.107 R)
• M5: 3,922,307 km (0.11 R)
• M6: 4,611,953 km (0.084 R)
• M7: 5,405,869 km (0.081 R)
• M8: 6,808,947 km (0.094 R)
• M9: 10,478,732 km (0.103 R)
• M10: 12,824,577 km (0.115 R)
• M11: 13,902,280 km (0.098 R)
• M12: 15,090,087 km (0.071 R)
• M13: 16,237,353 km (0.104 R)
• M14: 16,614,340 km (0.091 R)
• M15: 20,586,612 km (0.105 R)
• M16: 21,283,738 km (0.119 R)

Planet 10 - Ice Giant

Semi-Major Axis: 6.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 950.9

Radius: 8

Gravity: 14.86 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 5.85 AU - 6.33 AU

Year: 9704 Days

Day: 24.2 Hours

Environment

Temp: -231 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 52,409,379 km

• M1: 104,270 km (0.098 R)
• M2: 441,613 km (0.087 R)
• M3: 936,632 km (0.058 R)
• M4: 1,469,949 km (0.119 R)
• M5: 1,829,732 km (0.083 R)
• M6: 4,709,042 km (0.058 R)
• M7: 5,461,369 km (0.117 R)
• M8: 6,216,091 km (0.062 R)
• M9: 9,285,989 km (0.09 R)
• M10: 12,148,843 km (0.101 R)
• M11: 13,493,279 km (0.055 R)
• M12: 15,206,773 km (0.113 R)
• M13: 18,351,171 km (0.068 R)
• M14: 19,060,115 km (0.097 R)
• M15: 21,729,240 km (0.052 R)
• M16: 23,702,586 km (0.118 R)
• M17: 32,224,279 km (0.036 R)
• M18: 36,113,076 km (0.11 R)
• M19: 36,604,654 km (0.034 R)
• M20: 45,090,444 km (0.059 R)
• M21: 49,786,620 km (0.073 R)
• M22: 50,702,010 km (0.069 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: 413 - 10,717 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit