🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.89

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 0.47 AU - 0.63 AU

Year: 259 Days

Day: 33.1 Hours

Environment

Temp: -131 °C

Axial Tilt: 8.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.79

Radius: 0.91

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.52 AU - 0.6 AU

Year: 266 Days

Day: 33.8 Hours

Environment

Temp: -125 °C

Axial Tilt: 14 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 571.1

Radius: 12.9

Gravity: 3.43 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.65 AU - 0.79 AU

Year: 388 Days

Day: 6.8 Hours

Environment

Temp: -140 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 40,340,564 km

• M1: 160,818 km (0.085 R)
• M2: 567,425 km (0.092 R)
• M3: 1,159,084 km (0.095 R)
• M4: 1,575,864 km (0.081 R)
• M5: 2,055,325 km (0.037 R)
• M6: 2,613,774 km (0.062 R)
• M7: 3,185,687 km (0.092 R)
• M8: 4,325,024 km (0.097 R)
• M9: 4,981,459 km (0.097 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 804.7

Radius: 14.3

Gravity: 3.94 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.87 AU - 0.91 AU

Year: 534 Days

Day: 9.2 Hours

Environment

Temp: -142 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 40,340,564 km

• M1: 178,321 km (0.097 R)
• M2: 745,596 km (0.059 R)
• M3: 1,230,742 km (0.049 R)
• M4: 1,703,471 km (0.066 R)
• M5: 2,160,941 km (0.088 R)
• M6: 2,755,443 km (0.115 R)
• M7: 3,247,471 km (0.114 R)
• M8: 3,758,198 km (0.112 R)
• M9: 4,703,656 km (0.116 R)
• M10: 5,360,989 km (0.065 R)
• M11: 6,079,209 km (0.105 R)
• M12: 6,639,303 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 68.3

Radius: 10.3

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 1.11 AU - 1.67 AU

Year: 1042 Days

Day: 5.4 Hours

Environment

Temp: -174 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 40,340,564 km

• M1: 130,599 km (0.074 R)
• M2: 576,700 km (0.099 R)
• M3: 983,456 km (0.11 R)
• M4: 2,000,572 km (0.084 R)
• M5: 2,666,133 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 233.7

Radius: 11.1

Gravity: 1.9 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 4.21 AU - 4.27 AU

Year: 5551 Days

Day: 5.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 123.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 40,340,564 km

• M1: 172,187 km (0.061 R)
• M2: 692,040 km (0.11 R)
• M3: 1,523,804 km (0.057 R)
• M4: 2,767,112 km (0.057 R)
• M5: 3,447,782 km (0.101 R)
• M6: 4,214,920 km (0.096 R)
• M7: 5,019,009 km (0.032 R)
• M8: 5,368,170 km (0.099 R)
• M9: 6,370,027 km (0.117 R)
• M10: 10,086,337 km (0.049 R)
• M11: 21,430,194 km (0.099 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 670.9

Radius: 6

Gravity: 18.64 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 5.96 AU - 7.96 AU

Year: 11675 Days

Day: 21.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 40,340,564 km

• M1: 74,649 km (0.074 R)
• M2: 290,519 km (0.056 R)
• M3: 535,411 km (0.119 R)
• M4: 1,182,721 km (0.094 R)
• M5: 2,595,523 km (0.117 R)
• M6: 3,322,718 km (0.035 R)
• M7: 3,654,078 km (0.083 R)
• M8: 3,841,524 km (0.062 R)
• M9: 4,353,298 km (0.079 R)
• M10: 4,718,915 km (0.111 R)
• M11: 6,943,136 km (0.077 R)
• M12: 7,315,485 km (0.071 R)
• M13: 7,788,514 km (0.066 R)
• M14: 8,653,190 km (0.103 R)
• M15: 12,696,222 km (0.093 R)
• M16: 13,569,275 km (0.107 R)
• M17: 13,761,359 km (0.104 R)
• M18: 14,151,211 km (0.101 R)
• M19: 14,548,243 km (0.047 R)
• M20: 16,646,353 km (0.097 R)
• M21: 16,866,562 km (0.104 R)
• M22: 19,746,021 km (0.095 R)
• M23: 20,746,083 km (0.062 R)
• M24: 22,487,253 km (0.059 R)
• M25: 23,577,372 km (0.095 R)
• M26: 24,417,813 km (0.108 R)
• M27: 25,374,940 km (0.059 R)
• M28: 29,668,399 km (0.103 R)
• M29: 30,209,794 km (0.052 R)
• M30: 32,785,121 km (0.106 R)
• M31: 35,746,262 km (0.119 R)
• M32: 36,730,316 km (0.08 R)
• M33: 38,623,627 km (0.07 R)
• M34: 41,382,511 km (0.069 R)
• M35: 45,547,316 km (0.098 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 116.7

Radius: 6.5

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 8.88 AU - 10.18 AU

Year: 18706 Days

Day: 23.7 Hours

Environment

Temp: -222 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 40,340,564 km

• M1: 80,932 km (0.043 R)
• M2: 319,541 km (0.107 R)
• M3: 644,318 km (0.05 R)
• M4: 1,677,142 km (0.115 R)
• M5: 1,881,941 km (0.07 R)
• M6: 2,378,307 km (0.119 R)
• M7: 7,419,606 km (0.086 R)
• M8: 7,655,073 km (0.098 R)
• M9: 8,908,104 km (0.081 R)
• M10: 11,342,511 km (0.08 R)
• M11: 27,798,276 km (0.093 R)
• M12: 31,635,462 km (0.111 R)
• M13: 36,824,862 km (0.036 R)
• M14: 38,673,144 km (0.094 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 526 - 15,756 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit