🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.23

Radius: 0.56

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.46 AU - 0.72 AU

Year: 297 Days

Day: 33 Hours

Environment

Temp: -125 °C

Axial Tilt: 38.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 234.3

Radius: 13

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.64 AU - 0.74 AU

Year: 376 Days

Day: 13 Hours

Environment

Temp: -141 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 89,014,028 km

• M1: 161,715 km (0.103 R)
• M2: 780,602 km (0.072 R)
• M3: 1,249,441 km (0.042 R)
• M4: 1,723,667 km (0.075 R)
• M5: 2,213,001 km (0.057 R)
• M6: 2,751,703 km (0.093 R)
• M7: 3,209,922 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 688.6

Radius: 10.4

Gravity: 6.37 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.66 AU - 0.98 AU

Year: 487 Days

Day: 5.9 Hours

Environment

Temp: -151 °C

Axial Tilt: 85.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 89,014,028 km

• M1: 129,402 km (0.054 R)
• M2: 498,759 km (0.12 R)
• M3: 1,090,269 km (0.1 R)
• M4: 1,431,203 km (0.069 R)
• M5: 1,876,556 km (0.074 R)
• M6: 2,797,929 km (0.076 R)
• M7: 3,211,417 km (0.112 R)
• M8: 3,769,418 km (0.042 R)
• M9: 4,390,997 km (0.032 R)
• M10: 4,920,723 km (0.086 R)
• M11: 5,663,775 km (0.029 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 154.4

Radius: 10.6

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.99 AU - 1.43 AU

Year: 873 Days

Day: 11.2 Hours

Environment

Temp: -167 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 89,014,028 km

• M1: 131,796 km (0.073 R)
• M2: 622,776 km (0.095 R)
• M3: 1,039,855 km (0.092 R)
• M4: 1,481,767 km (0.06 R)
• M5: 2,225,568 km (0.08 R)
• M6: 2,866,146 km (0.091 R)
• M7: 3,362,511 km (0.097 R)
• M8: 3,863,963 km (0.1 R)
• M9: 4,791,021 km (0.097 R)
• M10: 5,541,704 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 202.8

Radius: 10.1

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 1.07 AU - 1.57 AU

Year: 995 Days

Day: 7.4 Hours

Environment

Temp: -165 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 89,014,028 km

• M1: 125,662 km (0.061 R)
• M2: 1,105,528 km (0.066 R)
• M3: 1,898,995 km (0.081 R)
• M4: 4,246,336 km (0.108 R)
• M5: 5,334,810 km (0.119 R)
• M6: 6,027,298 km (0.102 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 115.5

Radius: 6.5

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 6.33 AU - 9.45 AU

Year: 14539 Days

Day: 16.6 Hours

Environment

Temp: -224 °C

Axial Tilt: 46.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 89,014,028 km

• M1: 86,468 km (0.108 R)
• M2: 520,900 km (0.092 R)
• M3: 1,120,488 km (0.095 R)
• M4: 2,267,006 km (0.103 R)
• M5: 2,592,681 km (0.114 R)
• M6: 3,853,791 km (0.115 R)
• M7: 4,848,018 km (0.104 R)
• M8: 5,419,482 km (0.09 R)
• M9: 7,294,691 km (0.094 R)
• M10: 8,598,736 km (0.089 R)
• M11: 11,073,833 km (0.069 R)
• M12: 11,659,957 km (0.114 R)
• M13: 12,525,531 km (0.037 R)
• M14: 12,788,075 km (0.063 R)
• M15: 14,156,297 km (0.068 R)
• M16: 14,846,541 km (0.052 R)
• M17: 15,081,560 km (0.075 R)
• M18: 15,801,425 km (0.04 R)
• M19: 16,923,858 km (0.096 R)
• M20: 19,396,561 km (0.119 R)
• M21: 20,104,009 km (0.077 R)
• M22: 24,143,301 km (0.069 R)
• M23: 29,796,305 km (0.098 R)
• M24: 30,170,450 km (0.094 R)
• M25: 30,832,720 km (0.104 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 932.9

Radius: 4.6

Gravity: 44.09 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 8.97 AU - 11.63 AU

Year: 21685 Days

Day: 24 Hours

Environment

Temp: -236 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 89,014,028 km

• M1: 57,146 km (0.044 R)
• M2: 401,521 km (0.074 R)
• M3: 575,952 km (0.106 R)
• M4: 823,536 km (0.119 R)
• M5: 1,153,699 km (0.079 R)
• M6: 4,070,708 km (0.085 R)
• M7: 5,456,732 km (0.1 R)
• M8: 7,080,617 km (0.059 R)
• M9: 7,949,182 km (0.116 R)
• M10: 12,207,934 km (0.104 R)
• M11: 16,016,546 km (0.089 R)
• M12: 16,186,938 km (0.099 R)
• M13: 17,593,906 km (0.079 R)
• M14: 19,080,311 km (0.11 R)
• M15: 30,831,672 km (0.114 R)
• M16: 32,301,172 km (0.113 R)
• M17: 32,984,236 km (0.069 R)
• M18: 34,097,244 km (0.115 R)
• M19: 37,137,372 km (0.104 R)
• M20: 39,882,942 km (0.097 R)
• M21: 46,635,640 km (0.066 R)
• M22: 50,737,913 km (0.092 R)
• M23: 54,495,213 km (0.047 R)
• M24: 79,996,713 km (0.096 R)
• M25: 84,296,306 km (0.092 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 247 - 10,603 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit