🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.51

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.55 AU - 0.71 AU

Year: 323 Days

Day: 16.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 18.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 54,086,444 km

• M1: 316,250 km (0.065 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 164

Radius: 14.9

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.57 AU - 0.93 AU

Year: 419 Days

Day: 8.4 Hours

Environment

Temp: -149 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 54,086,444 km

• M1: 185,501 km (0.047 R)
• M2: 724,802 km (0.029 R)
• M3: 1,494,632 km (0.109 R)
• M4: 2,277,927 km (0.101 R)
• M5: 2,812,739 km (0.098 R)
• M6: 3,382,557 km (0.075 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 982.6

Radius: 14.7

Gravity: 4.55 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.89 AU - 1.19 AU

Year: 685 Days

Day: 8.6 Hours

Environment

Temp: -161 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 54,086,444 km

• M1: 189,241 km (0.064 R)
• M2: 839,693 km (0.066 R)
• M3: 1,517,670 km (0.105 R)
• M4: 2,539,723 km (0.053 R)
• M5: 3,478,150 km (0.055 R)
• M6: 7,290,951 km (0.05 R)
• M7: 7,784,026 km (0.091 R)
• M8: 8,707,194 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 174.3

Radius: 9.9

Gravity: 1.78 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 1.05 AU - 1.21 AU

Year: 776 Days

Day: 9.6 Hours

Environment

Temp: -173 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 54,086,444 km

• M1: 123,119 km (0.047 R)
• M2: 453,431 km (0.093 R)
• M3: 814,560 km (0.057 R)
• M4: 1,128,566 km (0.105 R)
• M5: 2,023,610 km (0.074 R)
• M6: 2,383,393 km (0.102 R)
• M7: 3,057,631 km (0.092 R)
• M8: 4,724,600 km (0.09 R)
• M9: 5,144,372 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 132.8

Radius: 12.2

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 1.14 AU - 1.48 AU

Year: 968 Days

Day: 13.8 Hours

Environment

Temp: -167 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 54,086,444 km

• M1: 151,692 km (0.042 R)
• M2: 660,624 km (0.064 R)
• M3: 2,114,267 km (0.071 R)
• M4: 2,555,281 km (0.117 R)
• M5: 3,788,117 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 463.1

Radius: 9.2

Gravity: 5.47 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 4.14 AU - 4.86 AU

Year: 6164 Days

Day: 12 Hours

Environment

Temp: -207 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 54,086,444 km

• M1: 115,789 km (0.106 R)
• M2: 738,864 km (0.113 R)
• M3: 1,639,443 km (0.083 R)
• M4: 2,071,631 km (0.114 R)
• M5: 3,408,737 km (0.12 R)
• M6: 4,710,538 km (0.101 R)
• M7: 5,055,211 km (0.097 R)
• M8: 5,359,793 km (0.064 R)
• M9: 6,067,540 km (0.112 R)
• M10: 7,740,493 km (0.077 R)
• M11: 8,841,085 km (0.095 R)
• M12: 9,366,921 km (0.047 R)
• M13: 11,303,017 km (0.083 R)
• M14: 12,216,162 km (0.064 R)
• M15: 14,685,873 km (0.036 R)
• M16: 15,714,060 km (0.099 R)
• M17: 18,169,709 km (0.11 R)
• M18: 19,488,713 km (0.075 R)
• M19: 22,688,013 km (0.115 R)
• M20: 26,386,521 km (0.104 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 888

Radius: 14.9

Gravity: 4 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 4.59 AU - 5.87 AU

Year: 7723 Days

Day: 12.4 Hours

Environment

Temp: -212 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 54,086,444 km

• M1: 185,352 km (0.116 R)
• M2: 1,242,710 km (0.106 R)
• M3: 2,440,540 km (0.082 R)
• M4: 3,010,059 km (0.116 R)
• M5: 4,097,934 km (0.096 R)
• M6: 4,675,831 km (0.099 R)
• M7: 5,307,732 km (0.113 R)
• M8: 6,030,739 km (0.114 R)
• M9: 9,136,840 km (0.11 R)
• M10: 10,177,891 km (0.064 R)
• M11: 11,349,392 km (0.076 R)
• M12: 11,940,603 km (0.118 R)
• M13: 13,302,243 km (0.114 R)
• M14: 14,020,761 km (0.066 R)
• M15: 18,445,866 km (0.036 R)
• M16: 22,953,100 km (0.116 R)
• M17: 23,552,988 km (0.104 R)
• M18: 24,516,847 km (0.095 R)
• M19: 25,324,825 km (0.067 R)
• M20: 32,121,356 km (0.047 R)
• M21: 34,076,001 km (0.04 R)
• M22: 37,038,039 km (0.111 R)
• M23: 38,581,590 km (0.054 R)
• M24: 40,914,120 km (0.051 R)
• M25: 42,051,363 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 788.4

Radius: 6.9

Gravity: 16.56 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 6.11 AU - 7.27 AU

Year: 11173 Days

Day: 19 Hours

Environment

Temp: -227 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 54,086,444 km

• M1: 87,515 km (0.104 R)
• M2: 319,691 km (0.057 R)
• M3: 593,156 km (0.11 R)
• M4: 823,087 km (0.105 R)
• M5: 3,025,617 km (0.096 R)
• M6: 3,413,823 km (0.12 R)
• M7: 4,439,466 km (0.095 R)
• M8: 5,105,626 km (0.045 R)
• M9: 5,515,225 km (0.098 R)
• M10: 6,715,149 km (0.066 R)
• M11: 7,123,402 km (0.115 R)
• M12: 8,125,259 km (0.08 R)
• M13: 8,827,322 km (0.069 R)
• M14: 11,925,793 km (0.108 R)
• M15: 12,893,541 km (0.062 R)
• M16: 13,782,302 km (0.101 R)
• M17: 14,308,139 km (0.097 R)
• M18: 15,191,215 km (0.068 R)
• M19: 15,752,357 km (0.086 R)
• M20: 16,473,119 km (0.073 R)
• M21: 16,990,578 km (0.117 R)
• M22: 19,576,976 km (0.082 R)
• M23: 19,824,411 km (0.093 R)
• M24: 21,353,002 km (0.115 R)
• M25: 25,222,201 km (0.119 R)
• M26: 27,321,508 km (0.11 R)
• M27: 32,436,409 km (0.1 R)
• M28: 38,026,432 km (0.116 R)
• M29: 52,323,950 km (0.084 R)
• M30: 54,086,512 km (0.1 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 184 - 11,151 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit