🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.16

Radius: 0.48

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.59 AU - 0.71 AU

Year: 338 Days

Day: 36.7 Hours

Environment

Temp: -136 °C

Axial Tilt: 35 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 32,354,708 km

• M1: 13,613 km (0.039 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 479.3

Radius: 8.5

Gravity: 6.63 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.72 AU - 0.94 AU

Year: 488 Days

Day: 13.1 Hours

Environment

Temp: -145 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 32,354,708 km

• M1: 105,915 km (0.115 R)
• M2: 370,404 km (0.032 R)
• M3: 638,185 km (0.107 R)
• M4: 1,008,738 km (0.119 R)
• M5: 1,274,873 km (0.099 R)
• M6: 1,623,735 km (0.054 R)
• M7: 2,196,695 km (0.067 R)
• M8: 2,642,646 km (0.048 R)
• M9: 3,005,122 km (0.118 R)
• M10: 3,495,653 km (0.099 R)
• M11: 3,946,541 km (0.108 R)
• M12: 4,337,590 km (0.108 R)
• M13: 4,949,446 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 691.2

Radius: 12.1

Gravity: 4.72 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.8 AU - 0.86 AU

Year: 488 Days

Day: 6.6 Hours

Environment

Temp: -143 °C

Axial Tilt: 15.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 32,354,708 km

• M1: 150,495 km (0.044 R)
• M2: 528,230 km (0.044 R)
• M3: 1,105,528 km (0.091 R)
• M4: 1,794,576 km (0.109 R)
• M5: 2,184,129 km (0.084 R)
• M6: 2,702,336 km (0.104 R)
• M7: 3,434,468 km (0.05 R)
• M8: 3,907,796 km (0.072 R)
• M9: 4,337,740 km (0.094 R)
• M10: 4,768,582 km (0.032 R)
• M11: 5,821,751 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 200

Radius: 10.9

Gravity: 1.68 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 1.6 AU - 1.6 AU

Year: 1307 Days

Day: 12.2 Hours

Environment

Temp: -190 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 32,354,708 km

• M1: 143,165 km (0.075 R)
• M2: 517,609 km (0.072 R)
• M3: 1,314,217 km (0.072 R)
• M4: 1,698,684 km (0.08 R)
• M5: 2,207,317 km (0.05 R)
• M6: 2,969,368 km (0.109 R)
• M7: 3,740,844 km (0.119 R)
• M8: 5,151,253 km (0.118 R)
• M9: 6,284,457 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 470.8

Radius: 10.3

Gravity: 4.44 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 1.9 AU - 2.06 AU

Year: 1799 Days

Day: 7.7 Hours

Environment

Temp: -192 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 32,354,708 km

• M1: 128,056 km (0.077 R)
• M2: 518,207 km (0.102 R)
• M3: 957,277 km (0.088 R)
• M4: 1,320,650 km (0.12 R)
• M5: 1,651,411 km (0.12 R)
• M6: 2,060,112 km (0.09 R)
• M7: 2,706,375 km (0.112 R)
• M8: 3,055,537 km (0.115 R)
• M9: 3,744,285 km (0.1 R)
• M10: 4,125,909 km (0.083 R)
• M11: 4,688,248 km (0.096 R)
• M12: 5,473,038 km (0.095 R)
• M13: 5,920,186 km (0.028 R)
• M14: 7,223,932 km (0.117 R)
• M15: 7,845,660 km (0.117 R)
• M16: 8,829,715 km (0.071 R)
• M17: 10,559,067 km (0.1 R)
• M18: 11,112,130 km (0.118 R)
• M19: 13,241,057 km (0.057 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 636.4

Radius: 14.5

Gravity: 3.03 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 3.24 AU - 4.88 AU

Year: 5282 Days

Day: 13.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 32,354,708 km

• M1: 180,565 km (0.105 R)
• M2: 702,063 km (0.115 R)
• M3: 1,175,839 km (0.074 R)
• M4: 1,769,743 km (0.064 R)
• M5: 2,786,111 km (0.111 R)
• M6: 3,582,420 km (0.063 R)
• M7: 4,139,822 km (0.109 R)
• M8: 5,601,991 km (0.117 R)
• M9: 8,070,356 km (0.113 R)
• M10: 9,607,474 km (0.083 R)
• M11: 10,780,920 km (0.118 R)
• M12: 12,392,239 km (0.116 R)
• M13: 13,675,789 km (0.093 R)
• M14: 14,213,294 km (0.118 R)
• M15: 15,273,793 km (0.117 R)
• M16: 15,970,321 km (0.112 R)
• M17: 16,993,271 km (0.057 R)
• M18: 17,489,487 km (0.073 R)
• M19: 18,187,660 km (0.116 R)
• M20: 19,504,870 km (0.107 R)
• M21: 24,539,287 km (0.091 R)
• M22: 27,060,160 km (0.108 R)
• M23: 30,562,097 km (0.089 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 693.7

Radius: 14.8

Gravity: 3.17 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 4.51 AU - 6.31 AU

Year: 8125 Days

Day: 13 Hours

Environment

Temp: -219 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 32,354,708 km

• M1: 184,005 km (0.115 R)
• M2: 678,576 km (0.063 R)
• M3: 1,266,196 km (0.1 R)
• M4: 2,229,906 km (0.108 R)
• M5: 2,716,847 km (0.079 R)
• M6: 3,231,613 km (0.103 R)
• M7: 4,037,347 km (0.085 R)
• M8: 4,656,084 km (0.11 R)
• M9: 6,085,193 km (0.072 R)
• M10: 6,864,747 km (0.079 R)
• M11: 7,670,182 km (0.092 R)
• M12: 8,667,102 km (0.048 R)
• M13: 10,128,973 km (0.106 R)
• M14: 10,817,871 km (0.113 R)
• M15: 11,643,501 km (0.097 R)
• M16: 12,289,914 km (0.109 R)
• M17: 13,951,647 km (0.085 R)
• M18: 17,230,533 km (0.114 R)
• M19: 21,229,733 km (0.05 R)
• M20: 23,700,043 km (0.089 R)
• M21: 29,501,598 km (0.106 R)
• M22: 31,113,216 km (0.116 R)
• M23: 32,889,241 km (0.063 R)
• M24: 35,847,390 km (0.116 R)
• M25: 38,150,000 km (0.112 R)
• M26: 41,412,879 km (0.044 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.81 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 73.9

Radius: 6.9

Gravity: 1.55 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 8.66 AU - 8.96 AU

Year: 16884 Days

Day: 25 Hours

Environment

Temp: -218 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 32,354,708 km

• M1: 90,357 km (0.03 R)
• M2: 526,285 km (0.076 R)
• M3: 1,056,460 km (0.112 R)
• M4: 1,331,870 km (0.047 R)
• M5: 2,326,097 km (0.089 R)
• M6: 2,723,728 km (0.045 R)
• M7: 6,156,700 km (0.066 R)
• M8: 6,780,823 km (0.091 R)
• M9: 9,532,676 km (0.101 R)
• M10: 10,187,465 km (0.102 R)
• M11: 10,918,550 km (0.112 R)
• M12: 11,297,033 km (0.118 R)
• M13: 12,180,408 km (0.043 R)
• M14: 14,646,080 km (0.072 R)
• M15: 15,875,176 km (0.114 R)
• M16: 22,757,726 km (0.102 R)
• M17: 24,644,005 km (0.114 R)
• M18: 24,968,184 km (0.069 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 220 - 13,962 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit