🌌 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: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.57 AU - 0.61 AU

Year: 288 Days

Day: 35.2 Hours

Environment

Temp: -119 °C

Axial Tilt: 15.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 347

Radius: 11.7

Gravity: 2.53 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.59 AU - 0.95 AU

Year: 430 Days

Day: 7.9 Hours

Environment

Temp: -144 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,556,257 km

• M1: 145,559 km (0.1 R)
• M2: 529,726 km (0.106 R)
• M3: 986,598 km (0.043 R)
• M4: 1,364,183 km (0.111 R)
• M5: 1,869,076 km (0.063 R)
• M6: 2,317,271 km (0.081 R)
• M7: 2,798,976 km (0.088 R)
• M8: 3,314,790 km (0.107 R)
• M9: 3,739,797 km (0.049 R)
• M10: 4,380,824 km (0.025 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 389.1

Radius: 9.6

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.96 AU - 1.2 AU

Year: 714 Days

Day: 14.8 Hours

Environment

Temp: -166 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,556,257 km

• M1: 119,828 km (0.075 R)
• M2: 456,573 km (0.086 R)
• M3: 820,544 km (0.104 R)
• M4: 1,129,763 km (0.1 R)
• M5: 2,022,414 km (0.107 R)
• M6: 2,634,419 km (0.064 R)
• M7: 3,685,493 km (0.101 R)
• M8: 4,012,065 km (0.064 R)
• M9: 4,978,617 km (0.076 R)
• M10: 5,551,727 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 389.3

Radius: 11.3

Gravity: 3.05 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 1.69 AU - 1.83 AU

Year: 1485 Days

Day: 8.7 Hours

Environment

Temp: -188 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 36,556,257 km

• M1: 148,551 km (0.052 R)
• M2: 507,436 km (0.083 R)
• M3: 865,274 km (0.099 R)
• M4: 1,231,490 km (0.1 R)
• M5: 1,598,603 km (0.068 R)
• M6: 2,902,049 km (0.083 R)
• M7: 3,387,494 km (0.111 R)
• M8: 4,225,990 km (0.073 R)
• M9: 4,814,658 km (0.111 R)
• M10: 5,178,031 km (0.05 R)
• M11: 6,112,569 km (0.111 R)
• M12: 7,656,419 km (0.097 R)
• M13: 8,896,137 km (0.053 R)
• M14: 9,328,175 km (0.112 R)
• M15: 10,234,140 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 34

Radius: 12.6

Gravity: 0.21 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 1.7 AU - 2.64 AU

Year: 2032 Days

Day: 6.2 Hours

Environment

Temp: -199 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 36,556,257 km

• M1: 156,629 km (0.089 R)
• M2: 602,580 km (0.104 R)
• M3: 1,154,596 km (0.084 R)
• M4: 1,816,268 km (0.114 R)
• M5: 2,580,264 km (0.088 R)
• M6: 5,655,548 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 493.8

Radius: 8.9

Gravity: 6.23 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 2.22 AU - 3.24 AU

Year: 2868 Days

Day: 14.9 Hours

Environment

Temp: -209 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 36,556,257 km

• M1: 111,151 km (0.119 R)
• M2: 415,134 km (0.117 R)
• M3: 696,976 km (0.117 R)
• M4: 1,006,794 km (0.115 R)
• M5: 1,290,880 km (0.066 R)
• M6: 1,884,036 km (0.099 R)
• M7: 2,546,605 km (0.058 R)
• M8: 2,971,911 km (0.11 R)
• M9: 3,479,796 km (0.068 R)
• M10: 4,432,735 km (0.116 R)
• M11: 4,801,044 km (0.119 R)
• M12: 5,379,988 km (0.069 R)
• M13: 5,850,474 km (0.097 R)
• M14: 7,279,582 km (0.104 R)
• M15: 8,593,350 km (0.055 R)
• M16: 9,552,722 km (0.091 R)
• M17: 11,044,960 km (0.062 R)
• M18: 11,723,985 km (0.1 R)
• M19: 13,165,361 km (0.064 R)
• M20: 14,484,963 km (0.065 R)
• M21: 14,768,751 km (0.1 R)
• M22: 15,104,299 km (0.118 R)
• M23: 15,543,368 km (0.081 R)
• M24: 16,755,859 km (0.078 R)
• M25: 18,580,056 km (0.118 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 373.4

Radius: 11

Gravity: 3.09 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 2.69 AU - 3.09 AU

Year: 3124 Days

Day: 8.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 36,556,257 km

• M1: 137,630 km (0.109 R)
• M2: 521,199 km (0.077 R)
• M3: 1,013,825 km (0.112 R)
• M4: 1,619,547 km (0.033 R)
• M5: 2,102,897 km (0.118 R)
• M6: 2,608,987 km (0.089 R)
• M7: 3,064,812 km (0.105 R)
• M8: 3,467,379 km (0.073 R)
• M9: 6,299,417 km (0.032 R)
• M10: 7,124,898 km (0.08 R)
• M11: 7,563,968 km (0.106 R)
• M12: 7,928,238 km (0.086 R)
• M13: 8,272,313 km (0.113 R)
• M14: 8,890,302 km (0.096 R)
• M15: 9,365,275 km (0.102 R)
• M16: 11,957,956 km (0.05 R)
• M17: 12,495,162 km (0.089 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 218.2

Radius: 8

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 6.05 AU - 7.97 AU

Year: 11801 Days

Day: 22.5 Hours

Environment

Temp: -233 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 36,556,257 km

• M1: 156,330 km (0.095 R)
• M2: 477,217 km (0.119 R)
• M3: 1,946,119 km (0.099 R)
• M4: 2,858,815 km (0.108 R)
• M5: 3,204,985 km (0.103 R)
• M6: 3,556,241 km (0.039 R)
• M7: 5,588,677 km (0.037 R)
• M8: 7,934,821 km (0.1 R)
• M9: 8,253,015 km (0.103 R)
• M10: 14,932,560 km (0.084 R)
• M11: 18,210,998 km (0.114 R)
• M12: 18,695,395 km (0.081 R)
• M13: 23,941,194 km (0.096 R)
• M14: 26,323,690 km (0.08 R)
• M15: 30,768,093 km (0.111 R)
• M16: 32,354,130 km (0.097 R)
• M17: 33,064,869 km (0.097 R)
• M18: 33,889,752 km (0.078 R)
• M19: 35,046,443 km (0.096 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 361 - 11,223 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit