🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.43

Radius: 0.71

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.48 AU - 0.66 AU

Year: 282 Days

Day: 33.7 Hours

Environment

Temp: -120 °C

Axial Tilt: 29.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,623,201 km

• M1: 18,849 km (0.106 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.24

Radius: 1.38

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.57 AU - 0.61 AU

Year: 297 Days

Day: 16.6 Hours

Environment

Temp: -121 °C

Axial Tilt: 0.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.37

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.49 AU - 0.73 AU

Year: 313 Days

Day: 43.1 Hours

Environment

Temp: -137 °C

Axial Tilt: 25 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 26.8

Radius: 10.6

Gravity: 0.24 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1 AU - 1.04 AU

Year: 676 Days

Day: 12.7 Hours

Environment

Temp: -155 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 46,623,201 km

• M1: 132,394 km (0.104 R)
• M2: 480,508 km (0.117 R)
• M3: 833,859 km (0.027 R)
• M4: 1,185,114 km (0.105 R)
• M5: 1,643,033 km (0.052 R)
• M6: 2,164,232 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 248.4

Radius: 11

Gravity: 2.05 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 1.1 AU - 1.12 AU

Year: 767 Days

Day: 11.6 Hours

Environment

Temp: -155 °C

Axial Tilt: 21.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 46,623,201 km

• M1: 136,882 km (0.068 R)
• M2: 1,055,712 km (0.086 R)
• M3: 1,408,015 km (0.102 R)
• M4: 2,370,528 km (0.093 R)
• M5: 4,028,970 km (0.11 R)
• M6: 4,492,125 km (0.107 R)
• M7: 4,943,910 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 790.4

Radius: 14.7

Gravity: 3.66 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.96 AU - 1.46 AU

Year: 873 Days

Day: 14 Hours

Environment

Temp: -165 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 46,623,201 km

• M1: 182,809 km (0.091 R)
• M2: 842,386 km (0.098 R)
• M3: 1,524,851 km (0.08 R)
• M4: 2,127,132 km (0.082 R)
• M5: 2,776,836 km (0.097 R)
• M6: 3,304,467 km (0.066 R)
• M7: 4,054,850 km (0.109 R)
• M8: 4,934,935 km (0.077 R)
• M9: 5,756,077 km (0.077 R)
• M10: 6,644,689 km (0.078 R)
• M11: 9,807,786 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 752.2

Radius: 8.5

Gravity: 10.41 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 3.08 AU - 3.44 AU

Year: 3861 Days

Day: 5.3 Hours

Environment

Temp: -207 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 46,623,201 km

• M1: 105,766 km (0.034 R)
• M2: 383,868 km (0.118 R)
• M3: 977,622 km (0.101 R)
• M4: 1,254,528 km (0.077 R)
• M5: 2,407,179 km (0.068 R)
• M6: 3,331,245 km (0.108 R)
• M7: 4,498,408 km (0.069 R)
• M8: 5,860,497 km (0.08 R)
• M9: 9,453,089 km (0.072 R)
• M10: 12,836,096 km (0.118 R)
• M11: 15,863,209 km (0.038 R)
• M12: 21,112,747 km (0.084 R)
• M13: 21,590,713 km (0.042 R)
• M14: 22,710,303 km (0.065 R)
• M15: 25,910,202 km (0.079 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 817.9

Radius: 4.2

Gravity: 46.37 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 4.82 AU - 7.92 AU

Year: 10547 Days

Day: 16 Hours

Environment

Temp: -220 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 46,623,201 km

• M1: 83,476 km (0.052 R)
• M2: 620,382 km (0.117 R)
• M3: 966,701 km (0.104 R)
• M4: 1,825,992 km (0.116 R)
• M5: 2,850,288 km (0.111 R)
• M6: 3,574,791 km (0.051 R)
• M7: 3,733,364 km (0.101 R)
• M8: 5,657,791 km (0.093 R)
• M9: 6,359,256 km (0.074 R)
• M10: 7,075,680 km (0.116 R)
• M11: 7,668,836 km (0.057 R)
• M12: 8,340,530 km (0.032 R)
• M13: 9,345,678 km (0.113 R)
• M14: 9,495,426 km (0.03 R)
• M15: 15,047,751 km (0.107 R)
• M16: 17,494,573 km (0.101 R)
• M17: 22,169,507 km (0.091 R)
• M18: 29,608,261 km (0.098 R)
• M19: 31,697,694 km (0.117 R)
• M20: 33,765,885 km (0.076 R)
• M21: 34,001,202 km (0.107 R)
• M22: 41,576,390 km (0.108 R)
• M23: 50,049,464 km (0.115 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.71 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 160

Radius: 4.9

Gravity: 6.66 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 7.79 AU - 11.63 AU

Year: 19849 Days

Day: 21.9 Hours

Environment

Temp: -225 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 46,623,201 km

• M1: 479,910 km (0.085 R)
• M2: 1,544,149 km (0.118 R)
• M3: 2,595,822 km (0.086 R)
• M4: 2,801,819 km (0.087 R)
• M5: 6,683,734 km (0.054 R)
• M6: 8,820,739 km (0.094 R)
• M7: 10,118,351 km (0.119 R)
• M8: 10,577,766 km (0.077 R)
• M9: 10,733,946 km (0.092 R)
• M10: 18,323,794 km (0.043 R)
• M11: 24,989,726 km (0.114 R)
• M12: 28,254,251 km (0.101 R)
• M13: 31,791,791 km (0.056 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: 209 - 12,769 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit