🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 97.4

Radius: 12.9

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.74 AU - 0.86 AU

Year: 469 Days

Day: 12.4 Hours

Environment

Temp: -141 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 78,914,736 km

• M1: 160,369 km (0.07 R)
• M2: 578,345 km (0.116 R)
• M3: 1,873,265 km (0.118 R)
• M4: 2,856,123 km (0.087 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 505.5

Radius: 9.5

Gravity: 5.6 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.86 AU - 0.94 AU

Year: 560 Days

Day: 13.1 Hours

Environment

Temp: -154 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 78,914,736 km

• M1: 119,678 km (0.104 R)
• M2: 513,420 km (0.097 R)
• M3: 1,234,631 km (0.117 R)
• M4: 1,659,340 km (0.076 R)
• M5: 3,048,505 km (0.035 R)
• M6: 3,352,339 km (0.114 R)
• M7: 5,572,221 km (0.061 R)
• M8: 6,229,704 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 251

Radius: 11

Gravity: 2.07 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 1.44 AU - 1.76 AU

Year: 1328 Days

Day: 11.3 Hours

Environment

Temp: -184 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 78,914,736 km

• M1: 137,780 km (0.119 R)
• M2: 507,286 km (0.116 R)
• M3: 1,337,405 km (0.101 R)
• M4: 2,303,358 km (0.114 R)
• M5: 3,036,837 km (0.098 R)
• M6: 3,458,703 km (0.077 R)
• M7: 4,180,961 km (0.055 R)
• M8: 4,536,705 km (0.05 R)
• M9: 5,217,375 km (0.095 R)
• M10: 6,106,435 km (0.076 R)
• M11: 7,093,482 km (0.115 R)
• M12: 7,625,452 km (0.096 R)
• M13: 8,233,717 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 935.3

Radius: 14.3

Gravity: 4.57 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 1.53 AU - 1.69 AU

Year: 1340 Days

Day: 12.4 Hours

Environment

Temp: -171 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 78,914,736 km

• M1: 178,470 km (0.078 R)
• M2: 747,241 km (0.101 R)
• M3: 1,255,725 km (0.119 R)
• M4: 1,969,456 km (0.03 R)
• M5: 2,566,351 km (0.036 R)
• M6: 3,030,254 km (0.117 R)
• M7: 3,566,563 km (0.082 R)
• M8: 4,405,956 km (0.077 R)
• M9: 5,160,977 km (0.081 R)
• M10: 5,794,075 km (0.102 R)
• M11: 7,785,821 km (0.074 R)
• M12: 9,075,654 km (0.109 R)
• M13: 10,368,030 km (0.103 R)
• M14: 10,848,239 km (0.088 R)
• M15: 11,890,637 km (0.099 R)
• M16: 12,609,156 km (0.056 R)
• M17: 13,356,397 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 141.2

Radius: 14.4

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 1.73 AU - 1.95 AU

Year: 1637 Days

Day: 13.1 Hours

Environment

Temp: -190 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 78,914,736 km

• M1: 179,069 km (0.116 R)
• M2: 630,705 km (0.111 R)
• M3: 1,107,922 km (0.059 R)
• M4: 1,747,902 km (0.072 R)
• M5: 3,085,755 km (0.08 R)
• M6: 4,100,478 km (0.098 R)
• M7: 4,686,153 km (0.11 R)
• M8: 5,436,985 km (0.067 R)
• M9: 6,533,687 km (0.099 R)
• M10: 7,426,786 km (0.058 R)
• M11: 8,034,453 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 316.2

Radius: 14.9

Gravity: 1.42 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 1.59 AU - 2.65 AU

Year: 2025 Days

Day: 14.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 78,914,736 km

• M1: 185,352 km (0.099 R)
• M2: 671,395 km (0.108 R)
• M3: 1,317,209 km (0.109 R)
• M4: 1,924,876 km (0.076 R)
• M5: 2,528,952 km (0.079 R)
• M6: 3,127,942 km (0.115 R)
• M7: 4,845,026 km (0.115 R)
• M8: 7,727,029 km (0.061 R)
• M9: 8,248,527 km (0.097 R)
• M10: 9,150,154 km (0.101 R)
• M11: 10,278,571 km (0.11 R)
• M12: 11,081,313 km (0.069 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 339.4

Radius: 10.2

Gravity: 3.26 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 3.41 AU - 3.79 AU

Year: 4481 Days

Day: 9.7 Hours

Environment

Temp: -207 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 78,914,736 km

• M1: 126,859 km (0.074 R)
• M2: 493,075 km (0.109 R)
• M3: 1,114,803 km (0.102 R)
• M4: 1,519,017 km (0.117 R)
• M5: 1,932,057 km (0.064 R)
• M6: 2,987,769 km (0.115 R)
• M7: 3,963,596 km (0.114 R)
• M8: 4,547,925 km (0.114 R)
• M9: 5,364,430 km (0.073 R)
• M10: 6,533,537 km (0.098 R)
• M11: 7,963,992 km (0.075 R)
• M12: 8,612,050 km (0.092 R)
• M13: 10,646,880 km (0.076 R)
• M14: 12,708,190 km (0.106 R)
• M15: 16,279,240 km (0.12 R)
• M16: 17,547,980 km (0.117 R)
• M17: 18,468,755 km (0.118 R)
• M18: 19,300,519 km (0.118 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.36 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 866.2

Radius: 4.6

Gravity: 40.94 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 7.31 AU - 11.41 AU

Year: 18786 Days

Day: 19.3 Hours

Environment

Temp: -233 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 78,914,736 km

• M1: 58,642 km (0.077 R)
• M2: 350,807 km (0.04 R)
• M3: 494,421 km (0.07 R)
• M4: 707,149 km (0.119 R)
• M5: 1,133,802 km (0.08 R)
• M6: 2,144,037 km (0.117 R)
• M7: 2,545,557 km (0.029 R)
• M8: 3,129,288 km (0.045 R)
• M9: 3,585,263 km (0.118 R)
• M10: 4,917,132 km (0.113 R)
• M11: 5,413,049 km (0.107 R)
• M12: 6,068,138 km (0.069 R)
• M13: 6,959,443 km (0.108 R)
• M14: 8,037,146 km (0.117 R)
• M15: 10,891,323 km (0.109 R)
• M16: 12,963,553 km (0.102 R)
• M17: 13,611,162 km (0.115 R)
• M18: 14,054,720 km (0.114 R)
• M19: 14,431,707 km (0.086 R)
• M20: 14,970,708 km (0.1 R)
• M21: 22,523,007 km (0.082 R)
• M22: 25,182,109 km (0.033 R)
• M23: 26,874,210 km (0.12 R)
• M24: 28,881,664 km (0.075 R)
• M25: 31,113,964 km (0.069 R)
• M26: 32,664,246 km (0.088 R)
• M27: 34,537,361 km (0.099 R)
• M28: 38,349,414 km (0.103 R)
• M29: 44,984,080 km (0.059 R)
• M30: 46,629,656 km (0.093 R)
• M31: 49,865,907 km (0.103 R)
• M32: 56,591,528 km (0.093 R)
• M33: 56,781,218 km (0.111 R)
• M34: 56,971,357 km (0.057 R)
• M35: 60,071,623 km (0.108 R)
• M36: 62,469,228 km (0.113 R)
• M37: 65,764,271 km (0.065 R)
• M38: 70,701,001 km (0.099 R)
• M39: 76,109,861 km (0.111 R)
• M40: 76,340,990 km (0.052 R)
• M41: 78,914,672 km (0.047 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 365 - 13,803 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit