🌌 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: 3.23

Radius: 1.6

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.57 AU - 0.61 AU

Year: 297 Days

Day: 47.3 Hours

Environment

Temp: -132 °C

Axial Tilt: 36.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 109.7

Radius: 14.3

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.78 AU - 1.3 AU

Year: 696 Days

Day: 7.6 Hours

Environment

Temp: -151 °C

Axial Tilt: 41.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 62,811,712 km

• M1: 339,587 km (0.099 R)
• M2: 850,613 km (0.082 R)
• M3: 1,841,999 km (0.091 R)
• M4: 2,448,468 km (0.096 R)
• M5: 3,858,129 km (0.055 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 608.2

Radius: 11.8

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.33 AU - 1.71 AU

Year: 1229 Days

Day: 5.7 Hours

Environment

Temp: -170 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 62,811,712 km

• M1: 146,756 km (0.104 R)
• M2: 550,819 km (0.052 R)
• M3: 1,191,996 km (0.043 R)
• M4: 2,153,162 km (0.036 R)
• M5: 2,624,246 km (0.1 R)
• M6: 3,349,945 km (0.094 R)
• M7: 5,141,080 km (0.112 R)
• M8: 5,732,441 km (0.066 R)
• M9: 7,027,360 km (0.078 R)
• M10: 8,591,705 km (0.079 R)
• M11: 9,756,324 km (0.091 R)
• M12: 10,794,085 km (0.076 R)
• M13: 11,289,403 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 905.7

Radius: 11

Gravity: 7.49 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 3.11 AU - 3.65 AU

Year: 4076 Days

Day: 12.9 Hours

Environment

Temp: -204 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 62,811,712 km

• M1: 136,732 km (0.109 R)
• M2: 586,573 km (0.117 R)
• M3: 937,530 km (0.114 R)
• M4: 1,642,734 km (0.086 R)
• M5: 2,378,008 km (0.114 R)
• M6: 3,068,701 km (0.11 R)
• M7: 3,461,695 km (0.065 R)
• M8: 3,932,928 km (0.078 R)
• M9: 4,471,181 km (0.106 R)
• M10: 5,753,534 km (0.105 R)
• M11: 6,109,427 km (0.084 R)
• M12: 7,232,608 km (0.04 R)
• M13: 7,647,742 km (0.099 R)
• M14: 8,679,070 km (0.068 R)
• M15: 9,552,572 km (0.073 R)
• M16: 9,926,268 km (0.044 R)
• M17: 11,427,632 km (0.079 R)
• M18: 12,476,612 km (0.119 R)
• M19: 15,209,765 km (0.1 R)
• M20: 16,418,965 km (0.095 R)
• M21: 20,430,731 km (0.09 R)
• M22: 23,068,440 km (0.071 R)
• M23: 23,894,520 km (0.1 R)
• M24: 25,526,184 km (0.106 R)
• M25: 28,837,533 km (0.077 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 217

Radius: 11.3

Gravity: 1.7 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 3.54 AU - 3.84 AU

Year: 4650 Days

Day: 11.3 Hours

Environment

Temp: -208 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 62,811,712 km

• M1: 140,472 km (0.078 R)
• M2: 549,922 km (0.092 R)
• M3: 989,740 km (0.108 R)
• M4: 1,443,619 km (0.092 R)
• M5: 1,868,029 km (0.105 R)
• M6: 2,389,527 km (0.071 R)
• M7: 3,671,132 km (0.111 R)
• M8: 4,647,707 km (0.111 R)
• M9: 5,220,966 km (0.077 R)
• M10: 5,713,143 km (0.082 R)
• M11: 7,653,128 km (0.118 R)
• M12: 9,487,796 km (0.11 R)
• M13: 10,915,857 km (0.057 R)
• M14: 12,056,242 km (0.106 R)
• M15: 13,500,460 km (0.112 R)
• M16: 14,669,118 km (0.05 R)
• M17: 15,802,621 km (0.053 R)
• M18: 16,729,679 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 419.6

Radius: 11.2

Gravity: 3.35 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 5.11 AU - 5.97 AU

Year: 8554 Days

Day: 14.2 Hours

Environment

Temp: -219 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 62,811,712 km

• M1: 139,276 km (0.117 R)
• M2: 589,715 km (0.089 R)
• M3: 976,425 km (0.052 R)
• M4: 2,035,728 km (0.106 R)
• M5: 2,964,431 km (0.114 R)
• M6: 3,381,361 km (0.111 R)
• M7: 3,957,612 km (0.111 R)
• M8: 5,218,572 km (0.061 R)
• M9: 5,829,829 km (0.117 R)
• M10: 6,219,232 km (0.116 R)
• M11: 6,765,414 km (0.04 R)
• M12: 9,190,246 km (0.119 R)
• M13: 9,990,894 km (0.041 R)
• M14: 11,228,966 km (0.08 R)
• M15: 11,885,102 km (0.081 R)
• M16: 12,407,049 km (0.094 R)
• M17: 13,609,367 km (0.059 R)
• M18: 15,929,181 km (0.087 R)
• M19: 18,156,694 km (0.119 R)
• M20: 18,639,895 km (0.099 R)
• M21: 20,659,167 km (0.078 R)
• M22: 21,490,931 km (0.115 R)
• M23: 22,344,836 km (0.051 R)
• M24: 24,037,835 km (0.106 R)
• M25: 25,988,441 km (0.072 R)
• M26: 27,136,455 km (0.082 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 226.7

Radius: 6.1

Gravity: 6.09 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 6.88 AU - 10.5 AU

Year: 16805 Days

Day: 20.3 Hours

Environment

Temp: -229 °C

Axial Tilt: 49.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 62,811,712 km

• M1: 82,129 km (0.094 R)
• M2: 381,774 km (0.086 R)
• M3: 898,186 km (0.117 R)
• M4: 1,136,345 km (0.118 R)
• M5: 2,047,696 km (0.062 R)
• M6: 2,603,003 km (0.071 R)
• M7: 5,250,287 km (0.068 R)
• M8: 7,608,398 km (0.079 R)
• M9: 8,695,376 km (0.071 R)
• M10: 23,496,739 km (0.102 R)
• M11: 36,391,178 km (0.077 R)
• M12: 39,062,098 km (0.119 R)
• M13: 41,860,925 km (0.097 R)
• M14: 43,844,144 km (0.047 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 531

Radius: 5.9

Gravity: 15.25 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 8.63 AU - 8.91 AU

Year: 17038 Days

Day: 15.8 Hours

Environment

Temp: -234 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 62,811,712 km

• M1: 79,885 km (0.061 R)
• M2: 276,756 km (0.066 R)
• M3: 545,733 km (0.072 R)
• M4: 866,920 km (0.08 R)
• M5: 1,267,543 km (0.115 R)
• M6: 2,649,677 km (0.12 R)
• M7: 3,355,480 km (0.091 R)
• M8: 3,969,430 km (0.052 R)
• M9: 4,334,449 km (0.069 R)
• M10: 7,821,874 km (0.086 R)
• M11: 8,249,724 km (0.085 R)
• M12: 9,255,919 km (0.053 R)
• M13: 10,856,766 km (0.094 R)
• M14: 11,449,174 km (0.025 R)
• M15: 16,908,299 km (0.04 R)
• M16: 17,946,957 km (0.079 R)
• M17: 18,357,454 km (0.098 R)
• M18: 22,528,093 km (0.026 R)
• M19: 26,647,121 km (0.113 R)
• M20: 29,845,972 km (0.088 R)
• M21: 32,801,428 km (0.116 R)
• M22: 33,046,020 km (0.08 R)
• M23: 45,962,300 km (0.042 R)
• M24: 47,820,306 km (0.12 R)
• M25: 52,516,183 km (0.12 R)
• M26: 55,580,246 km (0.089 R)
• M27: 55,927,912 km (0.098 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 432 - 16,566 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit