🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.36 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.78

Radius: 1.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.67 AU - 0.77 AU

Year: 277 Days

Day: 13.2 Hours

Environment

Temp: -38 °C

Axial Tilt: 151 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.1

Radius: 1.57

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 1.25 AU - 1.87 AU

Year: 883 Days

Day: 27.1 Hours

Environment

Temp: -120 °C

Axial Tilt: 47.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.57

Radius: 1.46

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 1.48 AU - 2 AU

Year: 1040 Days

Day: 41.7 Hours

Environment

Temp: -119 °C

Axial Tilt: 42.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 592

Radius: 8.9

Gravity: 7.47 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 1.91 AU - 2.59 AU

Year: 1529 Days

Day: 9.1 Hours

Environment

Temp: -136 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 67,306,241 km

• M1: 110,702 km (0.103 R)
• M2: 567,425 km (0.06 R)
• M3: 872,604 km (0.105 R)
• M4: 1,213,388 km (0.095 R)
• M5: 1,533,378 km (0.05 R)
• M6: 2,070,734 km (0.078 R)
• M7: 2,445,327 km (0.118 R)
• M8: 2,755,742 km (0.109 R)
• M9: 3,748,175 km (0.086 R)
• M10: 4,253,067 km (0.1 R)
• M11: 4,902,023 km (0.077 R)
• M12: 5,292,623 km (0.113 R)
• M13: 6,066,493 km (0.12 R)
• M14: 6,663,987 km (0.069 R)
• M15: 7,592,690 km (0.048 R)
• M16: 8,258,251 km (0.119 R)
• M17: 9,144,170 km (0.118 R)
• M18: 10,759,528 km (0.099 R)
• M19: 12,219,453 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 684.2

Radius: 8.5

Gravity: 9.47 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 2.03 AU - 2.85 AU

Year: 1727 Days

Day: 8.9 Hours

Environment

Temp: -141 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 67,306,241 km

• M1: 105,766 km (0.111 R)
• M2: 373,995 km (0.115 R)
• M3: 640,728 km (0.071 R)
• M4: 1,122,433 km (0.038 R)
• M5: 1,405,622 km (0.089 R)
• M6: 2,808,999 km (0.051 R)
• M7: 3,621,465 km (0.113 R)
• M8: 4,045,725 km (0.11 R)
• M9: 4,562,436 km (0.112 R)
• M10: 5,165,614 km (0.047 R)
• M11: 5,452,693 km (0.118 R)
• M12: 6,329,037 km (0.107 R)
• M13: 7,517,891 km (0.099 R)
• M14: 7,945,442 km (0.12 R)
• M15: 9,006,091 km (0.046 R)
• M16: 9,293,618 km (0.104 R)
• M17: 11,971,270 km (0.109 R)
• M18: 12,713,575 km (0.105 R)
• M19: 13,652,601 km (0.084 R)
• M20: 14,419,290 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 193.9

Radius: 12.7

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 2.06 AU - 2.86 AU

Year: 1748 Days

Day: 12.6 Hours

Environment

Temp: -134 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 67,306,241 km

• M1: 158,125 km (0.033 R)
• M2: 648,357 km (0.073 R)
• M3: 1,088,025 km (0.115 R)
• M4: 1,932,057 km (0.093 R)
• M5: 2,853,579 km (0.102 R)
• M6: 4,475,220 km (0.117 R)
• M7: 5,227,099 km (0.054 R)
• M8: 5,713,442 km (0.091 R)
• M9: 8,966,298 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 552.2

Radius: 10.5

Gravity: 5.01 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 2.29 AU - 3.19 AU

Year: 2055 Days

Day: 11.6 Hours

Environment

Temp: -144 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 67,306,241 km

• M1: 130,599 km (0.091 R)
• M2: 468,690 km (0.117 R)
• M3: 917,185 km (0.116 R)
• M4: 1,689,259 km (0.059 R)
• M5: 2,271,494 km (0.106 R)
• M6: 2,665,385 km (0.078 R)
• M7: 3,261,982 km (0.092 R)
• M8: 4,018,947 km (0.082 R)
• M9: 4,380,226 km (0.119 R)
• M10: 4,952,438 km (0.067 R)
• M11: 5,301,449 km (0.097 R)
• M12: 6,628,831 km (0.051 R)
• M13: 7,581,620 km (0.104 R)
• M14: 8,468,885 km (0.09 R)
• M15: 8,906,160 km (0.09 R)
• M16: 10,030,687 km (0.093 R)
• M17: 11,776,195 km (0.105 R)
• M18: 13,006,039 km (0.111 R)
• M19: 14,145,227 km (0.074 R)
• M20: 14,627,829 km (0.096 R)
• M21: 15,121,502 km (0.086 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 393.4

Radius: 14.3

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 3.18 AU - 3.9 AU

Year: 3017 Days

Day: 9.2 Hours

Environment

Temp: -154 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 67,306,241 km

• M1: 177,872 km (0.081 R)
• M2: 821,442 km (0.082 R)
• M3: 2,152,713 km (0.062 R)
• M4: 3,003,476 km (0.077 R)
• M5: 3,897,174 km (0.076 R)
• M6: 6,691,812 km (0.104 R)
• M7: 10,435,349 km (0.116 R)
• M8: 10,961,335 km (0.106 R)
• M9: 15,732,011 km (0.094 R)
• M10: 16,224,637 km (0.074 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 636.3

Radius: 13.6

Gravity: 3.44 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 4.2 AU - 6.12 AU

Year: 5310 Days

Day: 8.2 Hours

Environment

Temp: -181 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 67,306,241 km

• M1: 169,345 km (0.098 R)
• M2: 723,904 km (0.104 R)
• M3: 1,187,358 km (0.106 R)
• M4: 2,048,892 km (0.09 R)
• M5: 2,948,424 km (0.05 R)
• M6: 4,027,474 km (0.113 R)
• M7: 5,877,102 km (0.103 R)
• M8: 7,687,087 km (0.109 R)
• M9: 8,391,393 km (0.078 R)
• M10: 10,810,840 km (0.042 R)
• M11: 11,411,326 km (0.115 R)
• M12: 13,399,780 km (0.116 R)
• M13: 14,256,527 km (0.118 R)
• M14: 14,866,588 km (0.048 R)
• M15: 15,843,611 km (0.075 R)
• M16: 17,482,606 km (0.064 R)
• M17: 23,152,814 km (0.09 R)
• M18: 25,989,788 km (0.089 R)
• M19: 30,123,027 km (0.052 R)
• M20: 30,668,760 km (0.1 R)

Planet 10 - Ice Giant

Semi-Major Axis: 14.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 281.6

Radius: 6.5

Gravity: 6.67 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 14.56 AU - 15.16 AU

Year: 25951 Days

Day: 24.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 42.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 67,306,241 km

• M1: 80,783 km (0.116 R)
• M2: 335,997 km (0.11 R)
• M3: 1,093,860 km (0.092 R)
• M4: 1,463,666 km (0.075 R)
• M5: 2,026,004 km (0.111 R)
• M6: 2,346,143 km (0.034 R)
• M7: 2,723,130 km (0.099 R)
• M8: 3,947,140 km (0.082 R)
• M9: 4,255,461 km (0.12 R)
• M10: 4,480,755 km (0.057 R)
• M11: 6,125,434 km (0.078 R)
• M12: 6,839,914 km (0.107 R)
• M13: 17,952,492 km (0.093 R)
• M14: 19,939,751 km (0.1 R)
• M15: 24,345,408 km (0.105 R)
• M16: 24,653,430 km (0.094 R)
• M17: 27,878,162 km (0.06 R)
• M18: 32,849,448 km (0.118 R)
• M19: 42,839,893 km (0.037 R)
• M20: 60,679,739 km (0.101 R)
• M21: 64,130,812 km (0.102 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 498 - 12,399 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit