🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.88

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.49 AU - 0.73 AU

Year: 308 Days

Day: 12.3 Hours

Environment

Temp: -124 °C

Axial Tilt: 9.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 374.1

Radius: 13.8

Gravity: 1.96 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.91 AU - 0.99 AU

Year: 598 Days

Day: 10 Hours

Environment

Temp: -150 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 74,619,062 km

• M1: 171,888 km (0.108 R)
• M2: 745,446 km (0.109 R)
• M3: 1,485,956 km (0.086 R)
• M4: 2,263,117 km (0.063 R)
• M5: 2,705,926 km (0.032 R)
• M6: 3,184,490 km (0.085 R)
• M7: 4,658,627 km (0.11 R)
• M8: 5,515,374 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 119

Radius: 12.3

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.73 AU - 1.19 AU

Year: 607 Days

Day: 9 Hours

Environment

Temp: -154 °C

Axial Tilt: 41.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 74,619,062 km

• M1: 153,039 km (0.08 R)
• M2: 560,842 km (0.092 R)
• M3: 1,196,185 km (0.097 R)
• M4: 1,893,011 km (0.12 R)
• M5: 2,275,683 km (0.054 R)
• M6: 3,063,615 km (0.053 R)
• M7: 3,784,826 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 371.2

Radius: 8.1

Gravity: 5.66 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 1.33 AU - 1.51 AU

Year: 1093 Days

Day: 14.9 Hours

Environment

Temp: -175 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 74,619,062 km

• M1: 100,679 km (0.079 R)
• M2: 387,309 km (0.057 R)
• M3: 683,064 km (0.054 R)
• M4: 977,173 km (0.053 R)
• M5: 1,292,825 km (0.07 R)
• M6: 1,594,115 km (0.093 R)
• M7: 1,850,526 km (0.109 R)
• M8: 2,267,006 km (0.068 R)
• M9: 2,559,470 km (0.095 R)
• M10: 3,168,632 km (0.12 R)
• M11: 3,621,316 km (0.119 R)
• M12: 4,147,751 km (0.06 R)
• M13: 5,835,663 km (0.079 R)
• M14: 6,999,236 km (0.092 R)
• M15: 7,272,401 km (0.11 R)
• M16: 7,529,111 km (0.072 R)
• M17: 8,668,748 km (0.08 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 439

Radius: 14.7

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 1.52 AU - 1.94 AU

Year: 1469 Days

Day: 5.5 Hours

Environment

Temp: -193 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 74,619,062 km

• M1: 186,249 km (0.118 R)
• M2: 784,790 km (0.096 R)
• M3: 1,693,747 km (0.072 R)
• M4: 2,225,268 km (0.101 R)
• M5: 4,427,050 km (0.043 R)
• M6: 4,998,364 km (0.03 R)
• M7: 5,515,374 km (0.079 R)
• M8: 6,518,278 km (0.068 R)
• M9: 7,461,044 km (0.07 R)
• M10: 10,743,072 km (0.068 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 713.3

Radius: 8.4

Gravity: 10.11 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 1.98 AU - 2.02 AU

Year: 1826 Days

Day: 7.3 Hours

Environment

Temp: -190 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 74,619,062 km

• M1: 104,569 km (0.115 R)
• M2: 545,284 km (0.096 R)
• M3: 904,170 km (0.087 R)
• M4: 1,247,197 km (0.101 R)
• M5: 1,510,639 km (0.095 R)
• M6: 1,932,057 km (0.089 R)
• M7: 3,166,837 km (0.085 R)
• M8: 3,578,680 km (0.104 R)
• M9: 4,390,249 km (0.11 R)
• M10: 4,734,922 km (0.111 R)
• M11: 5,364,430 km (0.061 R)
• M12: 5,640,887 km (0.103 R)
• M13: 6,197,391 km (0.035 R)
• M14: 6,710,512 km (0.054 R)
• M15: 7,561,724 km (0.118 R)
• M16: 8,638,230 km (0.103 R)
• M17: 9,377,543 km (0.106 R)
• M18: 10,158,443 km (0.105 R)
• M19: 10,439,987 km (0.074 R)
• M20: 13,934,294 km (0.118 R)
• M21: 14,814,827 km (0.08 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 174.3

Radius: 3.7

Gravity: 12.73 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 7.21 AU - 8.67 AU

Year: 14446 Days

Day: 22.3 Hours

Environment

Temp: -233 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 74,619,062 km

• M1: 46,226 km (0.097 R)
• M2: 287,527 km (0.07 R)
• M3: 542,741 km (0.047 R)
• M4: 843,582 km (0.093 R)
• M5: 1,569,730 km (0.088 R)
• M6: 1,839,755 km (0.034 R)
• M7: 3,259,289 km (0.107 R)
• M8: 4,360,479 km (0.109 R)
• M9: 4,551,515 km (0.051 R)
• M10: 5,949,507 km (0.107 R)
• M11: 6,964,529 km (0.111 R)
• M12: 7,188,028 km (0.089 R)
• M13: 7,649,538 km (0.104 R)
• M14: 8,336,641 km (0.038 R)
• M15: 9,330,569 km (0.072 R)
• M16: 10,643,889 km (0.095 R)
• M17: 11,602,212 km (0.072 R)
• M18: 12,616,636 km (0.113 R)
• M19: 13,863,384 km (0.049 R)
• M20: 15,756,097 km (0.088 R)
• M21: 17,267,035 km (0.109 R)
• M22: 17,676,484 km (0.096 R)
• M23: 19,233,349 km (0.038 R)
• M24: 20,270,212 km (0.078 R)
• M25: 23,437,349 km (0.051 R)
• M26: 25,751,927 km (0.117 R)
• M27: 32,349,792 km (0.101 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 527.9

Radius: 7.7

Gravity: 8.9 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 8.48 AU - 12.62 AU

Year: 22126 Days

Day: 15.2 Hours

Environment

Temp: -229 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 74,619,062 km

• M1: 95,743 km (0.106 R)
• M2: 368,011 km (0.091 R)
• M3: 683,064 km (0.076 R)
• M4: 1,451,399 km (0.028 R)
• M5: 1,875,957 km (0.102 R)
• M6: 2,273,140 km (0.094 R)
• M7: 2,847,595 km (0.11 R)
• M8: 3,429,830 km (0.076 R)
• M9: 4,152,837 km (0.075 R)
• M10: 8,809,819 km (0.07 R)
• M11: 9,411,202 km (0.089 R)
• M12: 12,093,193 km (0.115 R)
• M13: 12,562,332 km (0.095 R)
• M14: 12,904,761 km (0.096 R)
• M15: 14,042,752 km (0.081 R)
• M16: 14,787,151 km (0.082 R)
• M17: 15,557,431 km (0.098 R)
• M18: 21,423,612 km (0.109 R)
• M19: 22,913,457 km (0.107 R)
• M20: 24,048,905 km (0.099 R)
• M21: 27,221,876 km (0.094 R)
• M22: 32,809,655 km (0.052 R)
• M23: 38,108,711 km (0.101 R)
• M24: 47,662,330 km (0.053 R)
• M25: 51,054,612 km (0.066 R)
• M26: 52,632,420 km (0.071 R)
• M27: 55,150,901 km (0.029 R)
• M28: 59,077,396 km (0.092 R)
• M29: 61,402,895 km (0.1 R)
• M30: 62,191,425 km (0.102 R)
• M31: 63,386,712 km (0.107 R)
• M32: 65,004,314 km (0.095 R)
• M33: 73,506,859 km (0.085 R)
• M34: 73,950,416 km (0.105 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: 208 - 19,448 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit