🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.43 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.86 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.79

Radius: 0.91

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.72 AU - 1 AU

Year: 282 Days

Day: 29.6 Hours

Environment

Temp: 144 °C

Axial Tilt: 11.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.47

Radius: 1.17

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 2.78 AU - 3.8 AU

Year: 2107 Days

Day: 23.9 Hours

Environment

Temp: -92 °C

Axial Tilt: 33.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 52,778,027 km

• M1: 27,227 km (0.095 R)
• M2: 182,958 km (0.03 R)

Planet 3 - Terrestrial

Semi-Major Axis: 3.8 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.97

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 3.02 AU - 4.58 AU

Year: 2616 Days

Day: 39.3 Hours

Environment

Temp: -119 °C

Axial Tilt: 37.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 4.02 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.7

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 3.22 AU - 4.82 AU

Year: 2846 Days

Day: 42.8 Hours

Environment

Temp: -124 °C

Axial Tilt: 74.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 52,778,027 km

• M1: 32,014 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 7.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 998.9

Radius: 8.7

Gravity: 13.2 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 5.94 AU - 9.6 AU

Year: 7648 Days

Day: 5.8 Hours

Environment

Temp: -165 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 52,778,027 km

• M1: 108,159 km (0.106 R)
• M2: 571,613 km (0.051 R)
• M3: 905,217 km (0.044 R)
• M4: 1,191,547 km (0.083 R)
• M5: 1,679,386 km (0.103 R)
• M6: 2,102,897 km (0.118 R)
• M7: 2,636,064 km (0.117 R)
• M8: 3,143,051 km (0.118 R)
• M9: 4,323,827 km (0.063 R)
• M10: 6,745,518 km (0.112 R)
• M11: 7,987,030 km (0.088 R)
• M12: 12,051,754 km (0.109 R)
• M13: 14,430,211 km (0.105 R)
• M14: 15,796,338 km (0.107 R)
• M15: 21,135,636 km (0.076 R)
• M16: 22,466,758 km (0.072 R)
• M17: 24,838,482 km (0.104 R)
• M18: 26,037,809 km (0.076 R)
• M19: 32,293,393 km (0.054 R)
• M20: 35,535,777 km (0.119 R)
• M21: 37,414,427 km (0.092 R)
• M22: 38,135,639 km (0.109 R)
• M23: 40,229,560 km (0.094 R)
• M24: 42,010,672 km (0.068 R)
• M25: 44,914,666 km (0.075 R)

Planet 6 - Gas Giant

Semi-Major Axis: 8.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 274.9

Radius: 14.9

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 7.46 AU - 8.8 AU

Year: 8185 Days

Day: 13.5 Hours

Environment

Temp: -163 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 52,778,027 km

• M1: 185,352 km (0.109 R)
• M2: 677,379 km (0.09 R)
• M3: 1,260,512 km (0.085 R)
• M4: 1,833,023 km (0.089 R)
• M5: 2,320,263 km (0.067 R)
• M6: 3,063,016 km (0.081 R)
• M7: 3,759,095 km (0.103 R)
• M8: 4,312,757 km (0.092 R)
• M9: 5,528,240 km (0.074 R)
• M10: 6,373,617 km (0.032 R)
• M11: 7,373,380 km (0.07 R)
• M12: 8,022,186 km (0.115 R)
• M13: 8,552,959 km (0.078 R)
• M14: 9,854,760 km (0.091 R)
• M15: 10,375,809 km (0.084 R)
• M16: 13,952,993 km (0.109 R)
• M17: 15,118,211 km (0.079 R)
• M18: 16,347,307 km (0.072 R)
• M19: 17,017,207 km (0.057 R)
• M20: 17,642,226 km (0.063 R)
• M21: 20,157,565 km (0.116 R)
• M22: 21,142,069 km (0.116 R)
• M23: 22,979,280 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 13.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 320.9

Radius: 4.5

Gravity: 15.85 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 12.91 AU - 13.77 AU

Year: 17204 Days

Day: 24.2 Hours

Environment

Temp: -180 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 52,778,027 km

• M1: 55,950 km (0.09 R)
• M2: 304,581 km (0.101 R)
• M3: 794,065 km (0.078 R)
• M4: 972,985 km (0.089 R)
• M5: 1,646,624 km (0.102 R)
• M6: 2,464,924 km (0.113 R)
• M7: 3,223,236 km (0.062 R)
• M8: 3,371,637 km (0.088 R)
• M9: 3,682,352 km (0.089 R)
• M10: 4,604,323 km (0.081 R)
• M11: 5,219,320 km (0.105 R)
• M12: 5,459,125 km (0.092 R)
• M13: 6,414,906 km (0.108 R)
• M14: 7,097,222 km (0.117 R)
• M15: 9,584,287 km (0.086 R)
• M16: 10,206,614 km (0.104 R)
• M17: 12,235,161 km (0.056 R)
• M18: 12,781,193 km (0.098 R)
• M19: 13,154,290 km (0.08 R)
• M20: 14,855,069 km (0.044 R)
• M21: 15,687,282 km (0.085 R)
• M22: 16,259,194 km (0.088 R)
• M23: 18,057,959 km (0.102 R)
• M24: 21,692,589 km (0.116 R)
• M25: 21,868,366 km (0.104 R)
• M26: 23,126,484 km (0.093 R)
• M27: 25,394,239 km (0.105 R)
• M28: 30,807,288 km (0.077 R)
• M29: 32,385,845 km (0.057 R)
• M30: 34,017,509 km (0.101 R)
• M31: 36,691,122 km (0.059 R)
• M32: 38,335,053 km (0.068 R)
• M33: 39,632,515 km (0.088 R)
• M34: 42,177,923 km (0.108 R)
• M35: 49,240,887 km (0.066 R)
• M36: 50,772,919 km (0.091 R)
• M37: 51,394,648 km (0.095 R)
• M38: 51,707,307 km (0.114 R)
• M39: 52,494,641 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 305.5

Radius: 4.9

Gravity: 12.72 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 11.97 AU - 14.81 AU

Year: 17301 Days

Day: 17.3 Hours

Environment

Temp: -180 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 52,778,027 km

• M1: 61,186 km (0.116 R)
• M2: 297,700 km (0.066 R)
• M3: 470,186 km (0.111 R)
• M4: 677,529 km (0.084 R)
• M5: 1,098,497 km (0.094 R)
• M6: 1,724,415 km (0.1 R)
• M7: 2,151,217 km (0.12 R)
• M8: 2,709,666 km (0.088 R)
• M9: 3,212,165 km (0.107 R)
• M10: 4,107,808 km (0.098 R)
• M11: 4,896,937 km (0.067 R)
• M12: 5,818,460 km (0.103 R)
• M13: 6,611,179 km (0.03 R)
• M14: 6,972,009 km (0.096 R)
• M15: 8,224,442 km (0.05 R)
• M16: 9,569,177 km (0.116 R)
• M17: 12,383,263 km (0.104 R)
• M18: 12,931,390 km (0.101 R)
• M19: 13,622,980 km (0.094 R)
• M20: 14,874,965 km (0.07 R)
• M21: 16,418,516 km (0.086 R)
• M22: 18,220,572 km (0.112 R)
• M23: 21,423,163 km (0.09 R)
• M24: 22,301,003 km (0.059 R)
• M25: 23,202,480 km (0.073 R)
• M26: 24,695,018 km (0.075 R)
• M27: 24,886,055 km (0.11 R)
• M28: 25,562,087 km (0.069 R)
• M29: 42,055,253 km (0.109 R)
• M30: 45,976,662 km (0.069 R)
• M31: 48,174,404 km (0.109 R)
• M32: 49,374,628 km (0.071 R)
• M33: 49,829,854 km (0.105 R)
• M34: 50,748,684 km (0.108 R)

Kuiper Belt

Range: 31.1 - 51.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 381 - 18,417 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit