🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.1

Radius: 1.57

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.42 AU - 0.62 AU

Year: 246 Days

Day: 16.2 Hours

Environment

Temp: -121 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 81,718,948 km

• M1: 127,308 km (0.083 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.22

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.47 AU - 0.65 AU

Year: 275 Days

Day: 37.2 Hours

Environment

Temp: -129 °C

Axial Tilt: 10.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.55

Radius: 1.19

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.6 AU - 0.66 AU

Year: 328 Days

Day: 31.2 Hours

Environment

Temp: -123 °C

Axial Tilt: 37.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 50.2

Radius: 14.8

Gravity: 0.23 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.64 AU - 0.92 AU

Year: 452 Days

Day: 10.5 Hours

Environment

Temp: -137 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 81,718,948 km

• M1: 184,005 km (0.118 R)
• M2: 668,852 km (0.066 R)
• M3: 1,339,200 km (0.12 R)
• M4: 1,957,339 km (0.097 R)
• M5: 2,474,798 km (0.04 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 113.4

Radius: 12.1

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.67 AU - 1.05 AU

Year: 523 Days

Day: 14.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 81,718,948 km

• M1: 150,645 km (0.11 R)
• M2: 531,372 km (0.036 R)
• M3: 1,029,233 km (0.093 R)
• M4: 2,228,559 km (0.087 R)
• M5: 3,363,409 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 248.6

Radius: 9.3

Gravity: 2.87 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 3.17 AU - 3.53 AU

Year: 4022 Days

Day: 12.7 Hours

Environment

Temp: -205 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 81,718,948 km

• M1: 116,088 km (0.118 R)
• M2: 781,050 km (0.12 R)
• M3: 1,131,558 km (0.119 R)
• M4: 1,703,621 km (0.06 R)
• M5: 2,629,931 km (0.045 R)
• M6: 4,297,498 km (0.039 R)
• M7: 5,438,631 km (0.056 R)
• M8: 5,962,971 km (0.083 R)
• M9: 8,083,820 km (0.118 R)
• M10: 10,398,997 km (0.108 R)
• M11: 13,212,035 km (0.091 R)
• M12: 13,657,986 km (0.076 R)
• M13: 17,276,160 km (0.077 R)
• M14: 18,574,820 km (0.105 R)

Planet 7 - Ice Giant

Semi-Major Axis: 5.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 365.2

Radius: 3.7

Gravity: 26.68 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 5.17 AU - 6.67 AU

Year: 9449 Days

Day: 18.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 81,718,948 km

• M1: 46,076 km (0.047 R)
• M2: 174,730 km (0.041 R)
• M3: 290,519 km (0.036 R)
• M4: 449,542 km (0.099 R)
• M5: 602,431 km (0.09 R)
• M6: 781,798 km (0.089 R)
• M7: 902,225 km (0.078 R)
• M8: 1,294,022 km (0.088 R)
• M9: 1,502,262 km (0.098 R)
• M10: 1,775,577 km (0.081 R)
• M11: 1,939,387 km (0.119 R)
• M12: 2,162,587 km (0.118 R)
• M13: 2,547,652 km (0.105 R)
• M14: 3,187,033 km (0.081 R)
• M15: 3,317,782 km (0.107 R)
• M16: 4,102,871 km (0.038 R)
• M17: 4,497,810 km (0.057 R)
• M18: 4,774,865 km (0.09 R)
• M19: 5,092,611 km (0.107 R)
• M20: 6,197,541 km (0.106 R)
• M21: 7,801,379 km (0.045 R)
• M22: 8,997,863 km (0.065 R)
• M23: 12,113,388 km (0.096 R)
• M24: 13,766,894 km (0.113 R)
• M25: 14,231,844 km (0.077 R)
• M26: 14,827,842 km (0.075 R)
• M27: 17,111,304 km (0.077 R)
• M28: 18,545,947 km (0.063 R)
• M29: 26,220,617 km (0.049 R)
• M30: 26,754,682 km (0.059 R)
• M31: 27,661,095 km (0.055 R)
• M32: 29,630,551 km (0.074 R)
• M33: 33,951,237 km (0.086 R)
• M34: 37,090,698 km (0.061 R)
• M35: 37,426,096 km (0.118 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 592.6

Radius: 6.1

Gravity: 15.93 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 8.72 AU - 13.28 AU

Year: 23933 Days

Day: 17.8 Hours

Environment

Temp: -230 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 81,718,948 km

• M1: 79,287 km (0.095 R)
• M2: 295,157 km (0.099 R)
• M3: 544,087 km (0.025 R)
• M4: 810,521 km (0.075 R)
• M5: 1,190,500 km (0.104 R)
• M6: 1,665,024 km (0.029 R)
• M7: 1,887,327 km (0.111 R)
• M8: 2,171,862 km (0.039 R)
• M9: 2,484,671 km (0.07 R)
• M10: 3,036,687 km (0.084 R)
• M11: 3,821,926 km (0.098 R)
• M12: 4,450,537 km (0.105 R)
• M13: 5,184,314 km (0.114 R)
• M14: 6,432,110 km (0.114 R)
• M15: 6,749,856 km (0.108 R)
• M16: 8,552,361 km (0.044 R)
• M17: 10,281,263 km (0.047 R)
• M18: 10,715,845 km (0.11 R)
• M19: 11,889,889 km (0.119 R)
• M20: 13,075,153 km (0.059 R)
• M21: 14,958,141 km (0.06 R)
• M22: 20,008,266 km (0.075 R)
• M23: 23,869,387 km (0.042 R)
• M24: 25,073,501 km (0.079 R)
• M25: 28,320,223 km (0.064 R)
• M26: 30,803,698 km (0.117 R)
• M27: 31,446,520 km (0.1 R)
• M28: 31,836,372 km (0.094 R)
• M29: 33,699,015 km (0.096 R)
• M30: 35,212,496 km (0.064 R)
• M31: 40,024,162 km (0.088 R)
• M32: 42,507,337 km (0.104 R)
• M33: 43,143,727 km (0.117 R)
• M34: 45,753,162 km (0.085 R)
• M35: 48,465,970 km (0.101 R)
• M36: 58,020,637 km (0.111 R)
• M37: 59,197,822 km (0.048 R)
• M38: 67,025,232 km (0.109 R)
• M39: 70,739,896 km (0.065 R)
• M40: 79,775,159 km (0.104 R)
• M41: 80,500,409 km (0.05 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 151 - 13,138 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit