🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.37

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.61 AU - 0.63 AU

Year: 315 Days

Day: 46.7 Hours

Environment

Temp: -132 °C

Axial Tilt: 35.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.3

Radius: 14

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.85 AU - 1.05 AU

Year: 598 Days

Day: 5.3 Hours

Environment

Temp: -165 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 56,982,416 km

• M1: 174,132 km (0.042 R)
• M2: 744,848 km (0.076 R)
• M3: 1,331,122 km (0.081 R)
• M4: 2,288,548 km (0.064 R)
• M5: 2,880,956 km (0.057 R)
• M6: 3,407,839 km (0.118 R)
• M7: 4,470,284 km (0.053 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 376.8

Radius: 11.5

Gravity: 2.85 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.92 AU - 1.08 AU

Year: 646 Days

Day: 5.5 Hours

Environment

Temp: -167 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,982,416 km

• M1: 143,016 km (0.118 R)
• M2: 571,913 km (0.073 R)
• M3: 1,251,386 km (0.064 R)
• M4: 1,847,534 km (0.081 R)
• M5: 2,401,195 km (0.099 R)
• M6: 3,223,834 km (0.108 R)
• M7: 4,752,724 km (0.051 R)
• M8: 5,144,372 km (0.095 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 444

Radius: 9.1

Gravity: 5.36 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 1.36 AU - 1.46 AU

Year: 1081 Days

Day: 14.6 Hours

Environment

Temp: -177 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 56,982,416 km

• M1: 113,246 km (0.117 R)
• M2: 469,139 km (0.101 R)
• M3: 847,472 km (0.115 R)
• M4: 1,254,977 km (0.091 R)
• M5: 1,577,659 km (0.045 R)
• M6: 2,460,885 km (0.07 R)
• M7: 2,774,891 km (0.112 R)
• M8: 3,128,839 km (0.079 R)
• M9: 3,821,178 km (0.035 R)
• M10: 4,560,790 km (0.06 R)
• M11: 5,092,611 km (0.076 R)
• M12: 5,724,662 km (0.081 R)
• M13: 6,938,499 km (0.109 R)
• M14: 7,912,231 km (0.113 R)
• M15: 8,866,815 km (0.119 R)
• M16: 9,385,770 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 259.5

Radius: 12.6

Gravity: 1.63 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 1.48 AU - 2.02 AU

Year: 1495 Days

Day: 10.9 Hours

Environment

Temp: -182 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,982,416 km

• M1: 157,078 km (0.058 R)
• M2: 749,037 km (0.091 R)
• M3: 1,173,894 km (0.057 R)
• M4: 2,425,430 km (0.112 R)
• M5: 3,047,608 km (0.055 R)
• M6: 3,567,909 km (0.098 R)
• M7: 4,561,987 km (0.105 R)
• M8: 4,986,247 km (0.101 R)
• M9: 6,018,023 km (0.111 R)
• M10: 9,370,511 km (0.04 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 696.2

Radius: 14.3

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 2.78 AU - 4.48 AU

Year: 4466 Days

Day: 11.6 Hours

Environment

Temp: -205 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,982,416 km

• M1: 178,171 km (0.102 R)
• M2: 918,232 km (0.051 R)
• M3: 1,472,342 km (0.112 R)
• M4: 4,909,204 km (0.065 R)
• M5: 5,636,698 km (0.077 R)
• M6: 7,512,057 km (0.066 R)
• M7: 8,592,453 km (0.118 R)
• M8: 10,577,018 km (0.098 R)
• M9: 11,653,525 km (0.072 R)
• M10: 13,971,992 km (0.102 R)
• M11: 15,773,749 km (0.051 R)
• M12: 20,034,596 km (0.111 R)
• M13: 26,429,755 km (0.093 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 262.9

Radius: 11.6

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 3.32 AU - 4.22 AU

Year: 4726 Days

Day: 7.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 56,982,416 km

• M1: 144,362 km (0.068 R)
• M2: 1,099,395 km (0.108 R)
• M3: 1,528,441 km (0.082 R)
• M4: 2,365,591 km (0.091 R)
• M5: 4,093,447 km (0.111 R)
• M6: 5,074,809 km (0.108 R)
• M7: 7,344,358 km (0.066 R)
• M8: 7,721,045 km (0.11 R)
• M9: 9,250,384 km (0.082 R)
• M10: 11,094,627 km (0.095 R)
• M11: 11,633,778 km (0.086 R)
• M12: 13,495,972 km (0.085 R)
• M13: 14,596,264 km (0.097 R)
• M14: 17,579,545 km (0.108 R)
• M15: 18,141,883 km (0.073 R)
• M16: 18,658,295 km (0.066 R)
• M17: 19,125,489 km (0.032 R)
• M18: 19,780,578 km (0.097 R)
• M19: 20,389,143 km (0.061 R)
• M20: 21,135,786 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 645.2

Radius: 6.2

Gravity: 16.78 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 5.89 AU - 6.27 AU

Year: 9680 Days

Day: 22.9 Hours

Environment

Temp: -216 °C

Axial Tilt: 143.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 56,982,416 km

• M1: 77,043 km (0.109 R)
• M2: 695,929 km (0.067 R)
• M3: 2,218,686 km (0.111 R)
• M4: 2,497,686 km (0.101 R)
• M5: 2,696,502 km (0.057 R)
• M6: 3,334,088 km (0.103 R)
• M7: 3,829,257 km (0.072 R)
• M8: 4,429,294 km (0.093 R)
• M9: 4,722,057 km (0.047 R)
• M10: 6,346,690 km (0.101 R)
• M11: 7,345,106 km (0.093 R)
• M12: 7,839,527 km (0.116 R)
• M13: 8,268,274 km (0.083 R)
• M14: 10,911,070 km (0.092 R)
• M15: 11,774,400 km (0.103 R)
• M16: 12,393,884 km (0.104 R)
• M17: 16,367,054 km (0.115 R)
• M18: 27,575,226 km (0.058 R)
• M19: 43,278,514 km (0.104 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 396.9

Radius: 5.7

Gravity: 12.22 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 8.53 AU - 9.19 AU

Year: 17028 Days

Day: 16.4 Hours

Environment

Temp: -221 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 56,982,416 km

• M1: 71,657 km (0.097 R)
• M2: 505,940 km (0.074 R)
• M3: 877,392 km (0.085 R)
• M4: 1,458,878 km (0.106 R)
• M5: 1,918,293 km (0.114 R)
• M6: 2,327,593 km (0.111 R)
• M7: 2,660,299 km (0.075 R)
• M8: 3,685,942 km (0.04 R)
• M9: 5,052,219 km (0.041 R)
• M10: 5,326,432 km (0.08 R)
• M11: 6,443,779 km (0.107 R)
• M12: 8,785,733 km (0.107 R)
• M13: 8,982,754 km (0.059 R)
• M14: 9,695,288 km (0.089 R)
• M15: 10,721,829 km (0.069 R)
• M16: 11,581,867 km (0.091 R)
• M17: 12,363,815 km (0.1 R)
• M18: 12,611,250 km (0.07 R)
• M19: 12,988,686 km (0.098 R)
• M20: 14,301,407 km (0.098 R)
• M21: 15,628,190 km (0.026 R)
• M22: 15,990,516 km (0.117 R)
• M23: 19,928,082 km (0.091 R)
• M24: 21,938,677 km (0.108 R)
• M25: 26,871,218 km (0.057 R)
• M26: 27,286,652 km (0.11 R)
• M27: 28,558,832 km (0.083 R)
• M28: 31,450,110 km (0.081 R)
• M29: 32,494,752 km (0.075 R)
• M30: 36,904,897 km (0.12 R)
• M31: 39,252,536 km (0.066 R)
• M32: 40,462,783 km (0.109 R)
• M33: 44,098,760 km (0.085 R)
• M34: 44,967,774 km (0.103 R)
• M35: 55,795,667 km (0.05 R)
• M36: 56,133,011 km (0.093 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 420 - 18,574 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit