🌌 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: 3.29

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.61 AU - 0.73 AU

Year: 354 Days

Day: 29.1 Hours

Environment

Temp: -144 °C

Axial Tilt: 47.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 519.6

Radius: 12.4

Gravity: 3.38 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.93 AU - 1.07 AU

Year: 646 Days

Day: 14.2 Hours

Environment

Temp: -164 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 28,093,329 km

• M1: 154,535 km (0.093 R)
• M2: 549,922 km (0.113 R)
• M3: 1,051,075 km (0.12 R)
• M4: 1,611,019 km (0.087 R)
• M5: 2,079,111 km (0.094 R)
• M6: 2,954,109 km (0.088 R)
• M7: 3,664,250 km (0.075 R)
• M8: 4,247,383 km (0.116 R)
• M9: 4,827,673 km (0.067 R)
• M10: 5,271,829 km (0.101 R)
• M11: 6,318,864 km (0.027 R)
• M12: 6,912,469 km (0.042 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 513.2

Radius: 10.8

Gravity: 4.4 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.9 AU - 1.3 AU

Year: 745 Days

Day: 6.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 28,093,329 km

• M1: 134,788 km (0.115 R)
• M2: 556,504 km (0.094 R)
• M3: 1,003,652 km (0.063 R)
• M4: 1,428,959 km (0.115 R)
• M5: 1,870,123 km (0.088 R)
• M6: 2,914,017 km (0.107 R)
• M7: 3,953,872 km (0.085 R)
• M8: 4,402,067 km (0.072 R)
• M9: 4,967,996 km (0.118 R)
• M10: 5,473,038 km (0.043 R)
• M11: 6,127,978 km (0.105 R)
• M12: 6,586,345 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 779.7

Radius: 8.8

Gravity: 10.07 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 1.01 AU - 1.53 AU

Year: 924 Days

Day: 8.6 Hours

Environment

Temp: -169 °C

Axial Tilt: 130.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 28,093,329 km

• M1: 109,506 km (0.106 R)
• M2: 402,269 km (0.1 R)
• M3: 838,047 km (0.12 R)
• M4: 1,133,503 km (0.096 R)
• M5: 1,532,481 km (0.08 R)
• M6: 1,915,451 km (0.059 R)
• M7: 2,799,874 km (0.086 R)
• M8: 3,305,664 km (0.096 R)
• M9: 3,886,852 km (0.064 R)
• M10: 4,604,772 km (0.118 R)
• M11: 5,118,042 km (0.112 R)
• M12: 5,527,641 km (0.089 R)
• M13: 6,842,756 km (0.113 R)
• M14: 7,487,074 km (0.105 R)
• M15: 10,108,627 km (0.075 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 459.6

Radius: 11.1

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 1.41 AU - 2.15 AU

Year: 1533 Days

Day: 8.1 Hours

Environment

Temp: -175 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 28,093,329 km

• M1: 138,079 km (0.09 R)
• M2: 527,482 km (0.104 R)
• M3: 887,265 km (0.113 R)
• M4: 1,242,710 km (0.078 R)
• M5: 1,623,436 km (0.116 R)
• M6: 2,072,379 km (0.055 R)
• M7: 2,902,199 km (0.077 R)
• M8: 3,940,857 km (0.111 R)
• M9: 4,301,986 km (0.081 R)
• M10: 4,992,679 km (0.083 R)
• M11: 6,064,099 km (0.108 R)
• M12: 6,571,086 km (0.073 R)
• M13: 7,436,061 km (0.108 R)
• M14: 8,917,080 km (0.087 R)
• M15: 9,331,317 km (0.106 R)
• M16: 10,071,377 km (0.112 R)
• M17: 11,844,112 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 663.8

Radius: 9.6

Gravity: 7.2 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 1.75 AU - 2.67 AU

Year: 2121 Days

Day: 7.8 Hours

Environment

Temp: -183 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 28,093,329 km

• M1: 119,529 km (0.117 R)
• M2: 545,135 km (0.105 R)
• M3: 1,031,328 km (0.074 R)
• M4: 2,114,416 km (0.049 R)
• M5: 2,488,411 km (0.1 R)
• M6: 3,140,807 km (0.07 R)
• M7: 4,368,258 km (0.117 R)
• M8: 4,677,626 km (0.071 R)
• M9: 5,767,447 km (0.12 R)
• M10: 7,130,283 km (0.067 R)
• M11: 9,288,532 km (0.101 R)
• M12: 10,083,944 km (0.1 R)
• M13: 10,589,884 km (0.105 R)
• M14: 11,188,724 km (0.12 R)
• M15: 11,889,291 km (0.117 R)
• M16: 12,331,652 km (0.043 R)
• M17: 12,701,607 km (0.1 R)
• M18: 13,507,192 km (0.119 R)
• M19: 15,173,263 km (0.079 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 467.1

Radius: 14.4

Gravity: 2.25 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 1.95 AU - 2.69 AU

Year: 2282 Days

Day: 14 Hours

Environment

Temp: -197 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 28,093,329 km

• M1: 180,565 km (0.098 R)
• M2: 718,668 km (0.109 R)
• M3: 1,383,032 km (0.055 R)
• M4: 1,977,983 km (0.064 R)
• M5: 2,577,422 km (0.108 R)
• M6: 3,233,558 km (0.057 R)
• M7: 4,280,893 km (0.115 R)
• M8: 4,968,893 km (0.071 R)
• M9: 5,498,171 km (0.111 R)
• M10: 6,337,863 km (0.099 R)
• M11: 8,425,202 km (0.089 R)
• M12: 8,924,261 km (0.042 R)
• M13: 9,947,510 km (0.075 R)
• M14: 11,121,405 km (0.047 R)
• M15: 12,227,681 km (0.114 R)
• M16: 13,447,801 km (0.079 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 327.3

Radius: 13.1

Gravity: 1.91 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 2.75 AU - 3.33 AU

Year: 3422 Days

Day: 5.6 Hours

Environment

Temp: -197 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 28,093,329 km

• M1: 163,211 km (0.114 R)
• M2: 634,145 km (0.1 R)
• M3: 1,113,607 km (0.058 R)
• M4: 1,548,039 km (0.084 R)
• M5: 2,248,905 km (0.104 R)
• M6: 3,202,741 km (0.094 R)
• M7: 3,800,833 km (0.083 R)
• M8: 4,750,032 km (0.064 R)
• M9: 6,080,705 km (0.102 R)
• M10: 8,139,770 km (0.1 R)
• M11: 9,536,715 km (0.046 R)
• M12: 11,964,688 km (0.098 R)
• M13: 12,462,101 km (0.096 R)
• M14: 13,766,445 km (0.105 R)
• M15: 14,359,152 km (0.115 R)
• M16: 16,239,896 km (0.119 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 972.6

Radius: 10.1

Gravity: 9.53 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 2.81 AU - 3.67 AU

Year: 3766 Days

Day: 13.3 Hours

Environment

Temp: -198 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 28,093,329 km

• M1: 125,662 km (0.109 R)
• M2: 594,801 km (0.09 R)
• M3: 1,033,422 km (0.072 R)
• M4: 1,636,152 km (0.075 R)
• M5: 1,983,518 km (0.111 R)
• M6: 3,316,286 km (0.104 R)
• M7: 3,857,381 km (0.069 R)
• M8: 4,932,691 km (0.093 R)
• M9: 6,380,499 km (0.111 R)
• M10: 6,888,384 km (0.114 R)
• M11: 10,051,182 km (0.114 R)
• M12: 11,412,971 km (0.117 R)
• M13: 11,877,323 km (0.091 R)
• M14: 15,887,144 km (0.109 R)
• M15: 17,544,838 km (0.077 R)
• M16: 18,797,571 km (0.106 R)
• M17: 20,718,707 km (0.11 R)
• M18: 26,368,121 km (0.117 R)
• M19: 26,853,566 km (0.109 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: 539 - 20,276 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit