🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.94

Radius: 1.54

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.45 AU - 0.63 AU

Year: 260 Days

Day: 33.3 Hours

Environment

Temp: -119 °C

Axial Tilt: 36.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 51,202,397 km

• M1: 61,784 km (0.109 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.85

Radius: 1.28

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.44 AU - 0.66 AU

Year: 268 Days

Day: 27.5 Hours

Environment

Temp: -112 °C

Axial Tilt: 35.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 508.5

Radius: 9.9

Gravity: 5.19 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.76 AU - 1.02 AU

Year: 551 Days

Day: 14.4 Hours

Environment

Temp: -143 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 51,202,397 km

• M1: 123,119 km (0.079 R)
• M2: 477,367 km (0.083 R)
• M3: 791,672 km (0.102 R)
• M4: 1,222,364 km (0.068 R)
• M5: 1,577,061 km (0.081 R)
• M6: 2,017,626 km (0.106 R)
• M7: 2,403,140 km (0.118 R)
• M8: 2,711,461 km (0.092 R)
• M9: 3,171,774 km (0.12 R)
• M10: 4,628,558 km (0.113 R)
• M11: 5,014,221 km (0.117 R)
• M12: 5,658,539 km (0.088 R)
• M13: 6,227,610 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 697.2

Radius: 9

Gravity: 8.61 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 1.61 AU - 1.87 AU

Year: 1506 Days

Day: 11.6 Hours

Environment

Temp: -176 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 51,202,397 km

• M1: 111,899 km (0.082 R)
• M2: 459,415 km (0.108 R)
• M3: 770,130 km (0.106 R)
• M4: 1,195,586 km (0.105 R)
• M5: 1,544,149 km (0.062 R)
• M6: 2,196,097 km (0.113 R)
• M7: 2,579,067 km (0.1 R)
• M8: 3,794,550 km (0.115 R)
• M9: 5,100,689 km (0.118 R)
• M10: 5,708,206 km (0.109 R)
• M11: 6,534,585 km (0.108 R)
• M12: 6,912,319 km (0.083 R)
• M13: 7,711,621 km (0.117 R)
• M14: 8,750,578 km (0.059 R)
• M15: 10,479,929 km (0.088 R)
• M16: 10,858,412 km (0.108 R)
• M17: 11,389,185 km (0.073 R)
• M18: 12,850,307 km (0.095 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 403.3

Radius: 13.9

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 2.64 AU - 3.38 AU

Year: 3426 Days

Day: 10.5 Hours

Environment

Temp: -194 °C

Axial Tilt: 48.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 51,202,397 km

• M1: 172,935 km (0.1 R)
• M2: 668,254 km (0.103 R)
• M3: 1,225,805 km (0.12 R)
• M4: 1,799,962 km (0.051 R)
• M5: 3,075,433 km (0.095 R)
• M6: 3,633,583 km (0.114 R)
• M7: 4,197,417 km (0.101 R)
• M8: 4,729,985 km (0.072 R)
• M9: 6,860,110 km (0.084 R)
• M10: 7,726,132 km (0.05 R)
• M11: 8,234,465 km (0.032 R)
• M12: 9,004,445 km (0.045 R)
• M13: 10,229,951 km (0.109 R)
• M14: 11,482,534 km (0.115 R)
• M15: 12,834,899 km (0.114 R)
• M16: 14,009,990 km (0.095 R)
• M17: 14,913,113 km (0.109 R)
• M18: 15,503,426 km (0.097 R)
• M19: 17,421,869 km (0.107 R)
• M20: 18,298,812 km (0.1 R)
• M21: 19,436,055 km (0.082 R)

Asteroid Belt

Center: 3.44 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 3.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 181.1

Radius: 12.7

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 3.09 AU - 4.65 AU

Year: 4994 Days

Day: 7.2 Hours

Environment

Temp: -208 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 51,202,397 km

• M1: 161,566 km (0.112 R)
• M2: 588,668 km (0.035 R)
• M3: 1,084,285 km (0.108 R)
• M4: 1,550,732 km (0.114 R)
• M5: 3,017,539 km (0.046 R)
• M6: 3,659,164 km (0.047 R)
• M7: 4,432,435 km (0.111 R)
• M8: 5,240,413 km (0.101 R)
• M9: 5,986,757 km (0.074 R)
• M10: 6,550,442 km (0.07 R)
• M11: 10,403,485 km (0.053 R)
• M12: 10,864,994 km (0.075 R)
• M13: 11,300,025 km (0.112 R)
• M14: 12,460,455 km (0.075 R)
• M15: 14,206,861 km (0.084 R)
• M16: 15,607,546 km (0.06 R)
• M17: 17,311,316 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 597.2

Radius: 6.9

Gravity: 12.54 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 6.42 AU - 9.76 AU

Year: 15095 Days

Day: 15.9 Hours

Environment

Temp: -234 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 51,202,397 km

• M1: 85,869 km (0.077 R)
• M2: 430,842 km (0.082 R)
• M3: 1,167,911 km (0.12 R)
• M4: 2,388,629 km (0.107 R)
• M5: 2,916,560 km (0.112 R)
• M6: 3,309,853 km (0.115 R)
• M7: 4,142,365 km (0.056 R)
• M8: 5,004,498 km (0.026 R)
• M9: 10,880,702 km (0.06 R)
• M10: 12,632,942 km (0.059 R)
• M11: 14,635,160 km (0.08 R)
• M12: 15,711,516 km (0.093 R)
• M13: 19,766,367 km (0.107 R)
• M14: 21,621,231 km (0.102 R)
• M15: 23,205,472 km (0.101 R)
• M16: 27,341,853 km (0.08 R)
• M17: 33,383,064 km (0.116 R)
• M18: 36,907,440 km (0.115 R)
• M19: 37,561,781 km (0.096 R)
• M20: 38,223,902 km (0.065 R)
• M21: 50,061,880 km (0.109 R)
• M22: 51,186,707 km (0.08 R)
• M23: 55,683,469 km (0.118 R)
• M24: 56,717,190 km (0.067 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.36 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 236.6

Radius: 3.9

Gravity: 15.56 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 9.02 AU - 9.7 AU

Year: 18786 Days

Day: 16 Hours

Environment

Temp: -225 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 51,202,397 km

• M1: 48,470 km (0.06 R)
• M2: 174,431 km (0.073 R)
• M3: 322,683 km (0.081 R)
• M4: 556,953 km (0.052 R)
• M5: 679,025 km (0.119 R)
• M6: 947,553 km (0.114 R)
• M7: 2,076,867 km (0.055 R)
• M8: 2,577,123 km (0.04 R)
• M9: 2,967,723 km (0.094 R)
• M10: 3,892,836 km (0.096 R)
• M11: 4,867,017 km (0.115 R)
• M12: 5,670,358 km (0.1 R)
• M13: 6,177,943 km (0.086 R)
• M14: 9,977,729 km (0.04 R)
• M15: 14,754,988 km (0.055 R)
• M16: 16,418,366 km (0.078 R)
• M17: 19,461,636 km (0.077 R)
• M18: 20,277,094 km (0.106 R)
• M19: 24,510,863 km (0.094 R)
• M20: 49,984,538 km (0.118 R)
• M21: 50,591,008 km (0.065 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: 195 - 13,567 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit