🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.81

Radius: 0.92

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.52 AU - 0.64 AU

Year: 290 Days

Day: 41.4 Hours

Environment

Temp: -127 °C

Axial Tilt: 13.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 0.93 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 2 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 838.6

Radius: 9.6

Gravity: 9.1 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 1.11 AU - 1.45 AU

Year: 950 Days

Day: 6.5 Hours

Environment

Temp: -163 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 36,457,018 km

• M1: 119,379 km (0.119 R)
• M2: 831,166 km (0.036 R)
• M3: 1,180,776 km (0.106 R)
• M4: 1,673,252 km (0.062 R)
• M5: 1,983,219 km (0.11 R)
• M6: 2,503,820 km (0.075 R)
• M7: 3,018,436 km (0.072 R)
• M8: 3,945,793 km (0.085 R)
• M9: 4,680,618 km (0.111 R)
• M10: 5,265,097 km (0.092 R)
• M11: 5,961,176 km (0.11 R)
• M12: 6,421,040 km (0.079 R)
• M13: 6,928,027 km (0.045 R)
• M14: 8,022,186 km (0.072 R)
• M15: 8,420,266 km (0.048 R)
• M16: 8,831,660 km (0.098 R)
• M17: 9,605,829 km (0.101 R)
• M18: 10,207,960 km (0.028 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 180.7

Radius: 13.7

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 1.1 AU - 1.62 AU

Year: 1040 Days

Day: 13.1 Hours

Environment

Temp: -180 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 36,457,018 km

• M1: 177,872 km (0.053 R)
• M2: 607,517 km (0.085 R)
• M3: 1,034,469 km (0.118 R)
• M4: 1,574,069 km (0.081 R)
• M5: 2,454,303 km (0.088 R)
• M6: 3,092,338 km (0.057 R)
• M7: 4,100,029 km (0.11 R)
• M8: 4,551,366 km (0.044 R)
• M9: 5,836,860 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 92.9

Radius: 10.4

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 1.25 AU - 1.65 AU

Year: 1145 Days

Day: 7.1 Hours

Environment

Temp: -171 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 36,457,018 km

• M1: 143,315 km (0.079 R)
• M2: 664,215 km (0.108 R)
• M3: 1,325,587 km (0.094 R)
• M4: 4,921,920 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 258.7

Radius: 14

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 4.43 AU - 4.89 AU

Year: 6599 Days

Day: 6.2 Hours

Environment

Temp: -205 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 36,457,018 km

• M1: 174,132 km (0.078 R)
• M2: 622,178 km (0.088 R)
• M3: 1,254,677 km (0.028 R)
• M4: 1,781,860 km (0.095 R)
• M5: 2,583,256 km (0.082 R)
• M6: 3,494,157 km (0.086 R)
• M7: 4,236,462 km (0.051 R)
• M8: 5,922,580 km (0.1 R)
• M9: 6,666,231 km (0.07 R)
• M10: 8,161,761 km (0.062 R)
• M11: 9,007,737 km (0.118 R)
• M12: 11,004,719 km (0.078 R)
• M13: 12,364,713 km (0.108 R)
• M14: 15,858,421 km (0.034 R)
• M15: 16,883,466 km (0.081 R)
• M16: 17,471,835 km (0.102 R)
• M17: 19,446,826 km (0.097 R)
• M18: 20,159,061 km (0.105 R)
• M19: 22,400,187 km (0.082 R)
• M20: 24,205,384 km (0.095 R)
• M21: 24,878,425 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 907.2

Radius: 10.5

Gravity: 8.23 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 3.97 AU - 6.11 AU

Year: 7423 Days

Day: 14.6 Hours

Environment

Temp: -213 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 36,457,018 km

• M1: 131,945 km (0.119 R)
• M2: 620,682 km (0.059 R)
• M3: 1,437,187 km (0.115 R)
• M4: 2,528,802 km (0.075 R)
• M5: 5,704,316 km (0.096 R)
• M6: 6,214,744 km (0.033 R)
• M7: 8,098,032 km (0.059 R)
• M8: 9,657,590 km (0.058 R)
• M9: 12,165,000 km (0.082 R)
• M10: 12,499,201 km (0.116 R)
• M11: 16,525,329 km (0.066 R)
• M12: 20,001,983 km (0.103 R)
• M13: 20,704,196 km (0.073 R)
• M14: 21,911,002 km (0.107 R)
• M15: 22,825,344 km (0.081 R)
• M16: 25,539,049 km (0.104 R)
• M17: 31,703,230 km (0.109 R)
• M18: 32,550,851 km (0.119 R)
• M19: 34,291,123 km (0.09 R)
• M20: 41,370,992 km (0.042 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 61.7

Radius: 8.2

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 4.28 AU - 6.02 AU

Year: 7667 Days

Day: 13.6 Hours

Environment

Temp: -208 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 36,457,018 km

• M1: 102,624 km (0.106 R)
• M2: 416,480 km (0.11 R)
• M3: 895,942 km (0.109 R)
• M4: 5,754,132 km (0.12 R)
• M5: 7,354,231 km (0.069 R)
• M6: 9,230,937 km (0.083 R)
• M7: 10,042,056 km (0.038 R)
• M8: 10,861,853 km (0.079 R)
• M9: 12,676,176 km (0.08 R)
• M10: 13,105,372 km (0.114 R)
• M11: 15,837,179 km (0.069 R)
• M12: 16,436,019 km (0.115 R)
• M13: 16,792,211 km (0.084 R)
• M14: 17,838,349 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.8

Radius: 8.9

Gravity: 5.74 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 4.79 AU - 5.93 AU

Year: 8141 Days

Day: 8.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 36,457,018 km

• M1: 110,702 km (0.102 R)
• M2: 492,476 km (0.094 R)
• M3: 1,111,811 km (0.12 R)
• M4: 1,464,862 km (0.116 R)
• M5: 2,784,316 km (0.075 R)
• M6: 3,422,799 km (0.119 R)
• M7: 3,957,013 km (0.065 R)
• M8: 4,763,944 km (0.062 R)
• M9: 5,552,475 km (0.092 R)
• M10: 6,391,719 km (0.094 R)
• M11: 9,027,035 km (0.12 R)
• M12: 10,138,397 km (0.103 R)
• M13: 10,799,470 km (0.089 R)
• M14: 11,539,082 km (0.04 R)
• M15: 13,847,228 km (0.118 R)
• M16: 14,483,767 km (0.095 R)
• M17: 15,877,720 km (0.091 R)
• M18: 16,255,604 km (0.097 R)
• M19: 18,098,949 km (0.089 R)
• M20: 19,212,855 km (0.097 R)
• M21: 19,642,051 km (0.065 R)
• M22: 20,077,680 km (0.045 R)
• M23: 20,445,541 km (0.078 R)
• M24: 27,410,070 km (0.119 R)
• M25: 29,346,166 km (0.053 R)
• M26: 30,107,020 km (0.114 R)
• M27: 31,076,714 km (0.059 R)
• M28: 32,976,158 km (0.106 R)
• M29: 33,798,647 km (0.119 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 444 - 17,262 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit