🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.9

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 0.39 AU - 0.65 AU

Year: 138 Days

Day: 38.7 Hours

Environment

Temp: 164 °C

Axial Tilt: 0.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.2

Radius: 1.08

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.92 AU - 1.28 AU

Year: 426 Days

Day: 24.3 Hours

Environment

Temp: 23 °C

Axial Tilt: 3.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.88

Radius: 1.53

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 1.34 AU - 1.7 AU

Year: 691 Days

Day: 13.1 Hours

Environment

Temp: -43 °C

Axial Tilt: 7.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,279,796 km

• M1: 236,365 km (0.076 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.16

Radius: 0.48

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 2.2 AU - 2.62 AU

Year: 1380 Days

Day: 21.4 Hours

Environment

Temp: -96 °C

Axial Tilt: 20.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.88

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 2.92 AU - 4.3 AU

Year: 2531 Days

Day: 27 Hours

Environment

Temp: -115 °C

Axial Tilt: 19.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,279,796 km

• M1: 617,690 km (0.064 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 71.6

Radius: 9.8

Gravity: 0.75 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 5.64 AU - 8.44 AU

Year: 6892 Days

Day: 9.2 Hours

Environment

Temp: -157 °C

Axial Tilt: 13.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 84,279,796 km

• M1: 122,521 km (0.12 R)
• M2: 493,673 km (0.11 R)
• M3: 1,183,768 km (0.079 R)
• M4: 1,542,204 km (0.046 R)
• M5: 2,105,440 km (0.108 R)
• M6: 2,831,140 km (0.104 R)
• M7: 3,553,099 km (0.101 R)
• M8: 4,331,906 km (0.117 R)
• M9: 4,686,602 km (0.063 R)
• M10: 5,598,700 km (0.052 R)
• M11: 5,994,985 km (0.117 R)
• M12: 6,463,226 km (0.106 R)
• M13: 7,532,253 km (0.113 R)
• M14: 8,171,335 km (0.102 R)
• M15: 10,677,548 km (0.114 R)
• M16: 13,349,216 km (0.049 R)
• M17: 14,422,432 km (0.1 R)
• M18: 17,200,464 km (0.077 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 456.8

Radius: 14.9

Gravity: 2.06 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 6.43 AU - 8.89 AU

Year: 7822 Days

Day: 5.1 Hours

Environment

Temp: -160 °C

Axial Tilt: 46 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 84,279,796 km

• M1: 186,399 km (0.117 R)
• M2: 650,152 km (0.101 R)
• M3: 1,198,578 km (0.118 R)
• M4: 2,587,295 km (0.12 R)
• M5: 3,076,331 km (0.099 R)
• M6: 3,583,019 km (0.094 R)
• M7: 4,220,006 km (0.1 R)
• M8: 5,785,249 km (0.07 R)
• M9: 7,265,669 km (0.108 R)
• M10: 9,283,595 km (0.098 R)
• M11: 10,169,214 km (0.06 R)
• M12: 10,869,931 km (0.092 R)
• M13: 11,904,699 km (0.076 R)
• M14: 12,577,740 km (0.074 R)
• M15: 13,774,523 km (0.102 R)
• M16: 16,080,874 km (0.073 R)
• M17: 16,839,634 km (0.081 R)
• M18: 17,688,602 km (0.118 R)
• M19: 19,050,092 km (0.043 R)
• M20: 20,480,397 km (0.118 R)
• M21: 22,367,874 km (0.072 R)
• M22: 26,399,387 km (0.063 R)
• M23: 32,065,406 km (0.113 R)
• M24: 33,268,322 km (0.095 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 973.7

Radius: 3.6

Gravity: 75.13 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 12.04 AU - 16.18 AU

Year: 19555 Days

Day: 17.3 Hours

Environment

Temp: -191 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 84,279,796 km

• M1: 49,367 km (0.118 R)
• M2: 870,360 km (0.075 R)
• M3: 1,893,909 km (0.116 R)
• M4: 2,056,971 km (0.094 R)
• M5: 3,781,535 km (0.115 R)
• M6: 4,107,359 km (0.11 R)
• M7: 4,416,129 km (0.111 R)
• M8: 4,666,855 km (0.076 R)
• M9: 4,851,758 km (0.111 R)
• M10: 5,003,151 km (0.087 R)
• M11: 7,618,870 km (0.071 R)
• M12: 7,823,520 km (0.096 R)
• M13: 8,190,483 km (0.118 R)
• M14: 10,637,456 km (0.102 R)
• M15: 10,764,764 km (0.087 R)
• M16: 11,888,842 km (0.072 R)
• M17: 12,656,578 km (0.117 R)
• M18: 13,530,978 km (0.05 R)
• M19: 17,699,074 km (0.087 R)
• M20: 18,058,258 km (0.072 R)
• M21: 20,708,833 km (0.086 R)
• M22: 28,813,747 km (0.098 R)
• M23: 29,061,331 km (0.116 R)
• M24: 30,964,216 km (0.113 R)
• M25: 32,813,695 km (0.077 R)
• M26: 33,491,522 km (0.082 R)
• M27: 39,254,930 km (0.11 R)
• M28: 47,343,986 km (0.062 R)
• M29: 49,793,053 km (0.053 R)
• M30: 51,411,253 km (0.106 R)
• M31: 53,810,055 km (0.1 R)
• M32: 56,475,590 km (0.118 R)
• M33: 57,448,574 km (0.069 R)
• M34: 58,630,846 km (0.102 R)
• M35: 59,427,904 km (0.06 R)
• M36: 59,628,215 km (0.086 R)
• M37: 60,840,108 km (0.06 R)
• M38: 62,896,181 km (0.03 R)
• M39: 65,423,936 km (0.075 R)
• M40: 70,456,558 km (0.065 R)
• M41: 72,494,081 km (0.115 R)
• M42: 83,775,406 km (0.101 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 187 - 18,166 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit