🌌 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: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.57

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.54 AU - 0.78 AU

Year: 341 Days

Day: 37.8 Hours

Environment

Temp: -135 °C

Axial Tilt: 14.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 74,761,944 km

• M1: 216,917 km (0.068 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 709.5

Radius: 13.9

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.8 AU - 1.24 AU

Year: 655 Days

Day: 7.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 74,761,944 km

• M1: 177,423 km (0.086 R)
• M2: 637,137 km (0.107 R)
• M3: 1,177,335 km (0.104 R)
• M4: 1,763,908 km (0.057 R)
• M5: 2,408,975 km (0.073 R)
• M6: 3,245,675 km (0.1 R)
• M7: 3,858,727 km (0.106 R)
• M8: 4,757,362 km (0.112 R)
• M9: 5,407,365 km (0.102 R)
• M10: 5,904,778 km (0.045 R)
• M11: 6,412,513 km (0.093 R)
• M12: 6,928,177 km (0.093 R)
• M13: 7,471,516 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 924.6

Radius: 14.3

Gravity: 4.52 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.4 AU - 1.9 AU

Year: 1348 Days

Day: 9.1 Hours

Environment

Temp: -189 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 74,761,944 km

• M1: 177,872 km (0.115 R)
• M2: 747,241 km (0.108 R)
• M3: 1,455,737 km (0.047 R)
• M4: 2,342,403 km (0.109 R)
• M5: 3,087,999 km (0.116 R)
• M6: 3,832,249 km (0.111 R)
• M7: 5,416,191 km (0.058 R)
• M8: 6,070,233 km (0.08 R)
• M9: 7,058,626 km (0.051 R)
• M10: 7,591,793 km (0.077 R)
• M11: 9,835,761 km (0.108 R)
• M12: 12,075,391 km (0.081 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 464.1

Radius: 13.4

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 1.61 AU - 1.75 AU

Year: 1385 Days

Day: 5.8 Hours

Environment

Temp: -178 °C

Axial Tilt: 41 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 74,761,944 km

• M1: 168,148 km (0.099 R)
• M2: 1,198,578 km (0.085 R)
• M3: 1,875,957 km (0.065 R)
• M4: 2,748,711 km (0.055 R)
• M5: 3,343,512 km (0.109 R)
• M6: 5,020,205 km (0.114 R)
• M7: 6,175,699 km (0.063 R)
• M8: 7,325,957 km (0.115 R)
• M9: 7,834,740 km (0.085 R)
• M10: 8,614,444 km (0.097 R)
• M11: 9,095,251 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 54

Radius: 13.1

Gravity: 0.31 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 1.82 AU - 2.12 AU

Year: 1758 Days

Day: 11.8 Hours

Environment

Temp: -195 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 74,761,944 km

• M1: 163,211 km (0.114 R)
• M2: 638,783 km (0.082 R)
• M3: 1,284,896 km (0.1 R)
• M4: 2,192,506 km (0.082 R)
• M5: 3,134,973 km (0.067 R)
• M6: 3,770,764 km (0.034 R)
• M7: 4,506,037 km (0.098 R)
• M8: 5,673,350 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 520

Radius: 10.1

Gravity: 5.1 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 1.94 AU - 2.38 AU

Year: 2018 Days

Day: 12.6 Hours

Environment

Temp: -190 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 74,761,944 km

• M1: 128,505 km (0.104 R)
• M2: 470,934 km (0.065 R)
• M3: 912,397 km (0.038 R)
• M4: 1,231,041 km (0.069 R)
• M5: 1,568,384 km (0.091 R)
• M6: 1,891,665 km (0.047 R)
• M7: 2,731,807 km (0.026 R)
• M8: 3,495,504 km (0.11 R)
• M9: 3,820,879 km (0.053 R)
• M10: 6,049,887 km (0.076 R)
• M11: 6,597,864 km (0.071 R)
• M12: 8,843,029 km (0.094 R)
• M13: 9,159,728 km (0.101 R)
• M14: 10,966,122 km (0.1 R)
• M15: 14,558,715 km (0.031 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 865.6

Radius: 11.3

Gravity: 6.78 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 2.43 AU - 3.25 AU

Year: 3043 Days

Day: 8 Hours

Environment

Temp: -199 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 74,761,944 km

• M1: 140,772 km (0.116 R)
• M2: 808,277 km (0.096 R)
• M3: 1,246,001 km (0.052 R)
• M4: 1,643,183 km (0.079 R)
• M5: 2,152,863 km (0.078 R)
• M6: 2,513,992 km (0.08 R)
• M7: 2,915,962 km (0.111 R)
• M8: 3,590,349 km (0.12 R)
• M9: 3,996,657 km (0.1 R)
• M10: 4,411,043 km (0.106 R)
• M11: 5,224,855 km (0.119 R)
• M12: 5,940,083 km (0.095 R)
• M13: 6,307,046 km (0.071 R)
• M14: 6,749,557 km (0.105 R)
• M15: 7,930,183 km (0.092 R)
• M16: 8,802,638 km (0.105 R)
• M17: 9,699,328 km (0.12 R)
• M18: 11,894,377 km (0.053 R)
• M19: 12,802,735 km (0.093 R)
• M20: 16,076,086 km (0.114 R)
• M21: 17,242,950 km (0.093 R)
• M22: 18,346,683 km (0.106 R)
• M23: 20,566,117 km (0.093 R)
• M24: 22,890,120 km (0.111 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 856

Radius: 5.8

Gravity: 25.45 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 7.21 AU - 10.97 AU

Year: 17425 Days

Day: 18.5 Hours

Environment

Temp: -227 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 74,761,944 km

• M1: 73,901 km (0.106 R)
• M2: 286,031 km (0.079 R)
• M3: 625,917 km (0.08 R)
• M4: 889,359 km (0.032 R)
• M5: 1,400,086 km (0.119 R)
• M6: 2,233,197 km (0.058 R)
• M7: 2,683,786 km (0.078 R)
• M8: 2,880,058 km (0.105 R)
• M9: 3,615,332 km (0.086 R)
• M10: 4,997,167 km (0.077 R)
• M11: 5,487,998 km (0.116 R)
• M12: 6,521,719 km (0.114 R)
• M13: 9,131,005 km (0.078 R)
• M14: 9,863,736 km (0.044 R)
• M15: 10,274,083 km (0.108 R)
• M16: 10,941,887 km (0.066 R)
• M17: 12,030,212 km (0.076 R)
• M18: 12,840,584 km (0.11 R)
• M19: 15,489,962 km (0.03 R)
• M20: 17,872,757 km (0.112 R)
• M21: 18,306,890 km (0.071 R)
• M22: 21,253,669 km (0.053 R)
• M23: 22,335,560 km (0.05 R)
• M24: 25,037,597 km (0.116 R)
• M25: 27,030,989 km (0.109 R)
• M26: 27,258,826 km (0.027 R)
• M27: 27,487,861 km (0.063 R)
• M28: 28,182,892 km (0.06 R)
• M29: 31,961,585 km (0.104 R)
• M30: 36,064,456 km (0.118 R)
• M31: 37,037,142 km (0.108 R)
• M32: 38,313,361 km (0.096 R)
• M33: 40,653,969 km (0.104 R)
• M34: 45,136,370 km (0.027 R)
• M35: 47,083,536 km (0.08 R)
• M36: 48,917,157 km (0.111 R)
• M37: 57,853,685 km (0.111 R)
• M38: 65,125,787 km (0.098 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 387 - 11,996 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit