🌌 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: 1.79

Radius: 1.26

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.47 AU - 0.71 AU

Year: 293 Days

Day: 24.5 Hours

Environment

Temp: -123 °C

Axial Tilt: 0.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 463.8

Radius: 10.9

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 1.04 AU - 1.1 AU

Year: 715 Days

Day: 10.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 44.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 73,399,559 km

• M1: 140,472 km (0.108 R)
• M2: 487,091 km (0.084 R)
• M3: 827,875 km (0.089 R)
• M4: 1,671,906 km (0.098 R)
• M5: 2,079,859 km (0.09 R)
• M6: 2,834,880 km (0.064 R)
• M7: 3,563,122 km (0.11 R)
• M8: 4,291,365 km (0.109 R)
• M9: 6,809,545 km (0.045 R)
• M10: 7,205,830 km (0.088 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 824.9

Radius: 10.5

Gravity: 7.48 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 1.27 AU - 2.03 AU

Year: 1368 Days

Day: 5.1 Hours

Environment

Temp: -173 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 73,399,559 km

• M1: 134,937 km (0.048 R)
• M2: 725,550 km (0.044 R)
• M3: 1,103,135 km (0.048 R)
• M4: 2,627,537 km (0.082 R)
• M5: 3,342,465 km (0.09 R)
• M6: 6,088,035 km (0.115 R)
• M7: 9,681,525 km (0.091 R)
• M8: 12,033,653 km (0.037 R)
• M9: 13,502,255 km (0.088 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 45.2

Radius: 14.1

Gravity: 0.23 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 3.38 AU - 4.96 AU

Year: 5498 Days

Day: 6.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 73,399,559 km

• M1: 175,478 km (0.107 R)
• M2: 615,595 km (0.08 R)
• M3: 2,427,525 km (0.058 R)
• M4: 2,890,380 km (0.039 R)
• M5: 3,412,627 km (0.078 R)
• M6: 4,962,012 km (0.051 R)
• M7: 5,585,536 km (0.111 R)
• M8: 6,308,093 km (0.089 R)
• M9: 8,389,299 km (0.089 R)
• M10: 9,649,362 km (0.045 R)
• M11: 11,205,329 km (0.073 R)
• M12: 11,699,601 km (0.044 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 344.5

Radius: 12.8

Gravity: 2.1 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 4.54 AU - 5.32 AU

Year: 7068 Days

Day: 5.7 Hours

Environment

Temp: -218 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 73,399,559 km

• M1: 161,865 km (0.11 R)
• M2: 987,795 km (0.061 R)
• M3: 1,528,142 km (0.102 R)
• M4: 2,217,639 km (0.082 R)
• M5: 2,687,227 km (0.083 R)
• M6: 3,424,445 km (0.115 R)
• M7: 4,292,711 km (0.101 R)
• M8: 4,896,638 km (0.108 R)
• M9: 6,029,393 km (0.059 R)
• M10: 7,225,876 km (0.088 R)
• M11: 7,682,150 km (0.1 R)
• M12: 12,105,310 km (0.103 R)
• M13: 14,218,081 km (0.079 R)
• M14: 14,992,699 km (0.116 R)
• M15: 23,970,815 km (0.051 R)
• M16: 25,791,570 km (0.066 R)
• M17: 30,155,041 km (0.103 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 411.3

Radius: 5

Gravity: 16.45 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 5.63 AU - 6.63 AU

Year: 9800 Days

Day: 20.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 73,399,559 km

• M1: 71,657 km (0.099 R)
• M2: 306,227 km (0.098 R)
• M3: 2,196,546 km (0.049 R)
• M4: 2,406,880 km (0.102 R)
• M5: 3,667,841 km (0.092 R)
• M6: 4,041,386 km (0.109 R)
• M7: 6,871,928 km (0.05 R)
• M8: 7,246,670 km (0.069 R)
• M9: 10,553,382 km (0.108 R)
• M10: 11,001,427 km (0.063 R)
• M11: 13,262,001 km (0.104 R)
• M12: 15,179,098 km (0.102 R)
• M13: 18,106,129 km (0.075 R)
• M14: 20,380,616 km (0.085 R)
• M15: 21,546,581 km (0.046 R)
• M16: 25,575,701 km (0.085 R)
• M17: 29,100,825 km (0.061 R)
• M18: 34,756,522 km (0.112 R)
• M19: 36,529,706 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 576.1

Radius: 3.3

Gravity: 52.9 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 8.19 AU - 9.05 AU

Year: 16341 Days

Day: 19 Hours

Environment

Temp: -220 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 73,399,559 km

• M1: 41,439 km (0.087 R)
• M2: 382,971 km (0.056 R)
• M3: 963,560 km (0.111 R)
• M4: 1,508,545 km (0.111 R)
• M5: 2,315,925 km (0.065 R)
• M6: 2,441,886 km (0.093 R)
• M7: 3,565,216 km (0.113 R)
• M8: 4,146,703 km (0.091 R)
• M9: 4,459,961 km (0.074 R)
• M10: 5,421,128 km (0.114 R)
• M11: 6,512,295 km (0.101 R)
• M12: 8,071,852 km (0.109 R)
• M13: 9,539,407 km (0.052 R)
• M14: 10,939,643 km (0.059 R)
• M15: 11,658,012 km (0.068 R)
• M16: 12,535,254 km (0.079 R)
• M17: 13,455,431 km (0.036 R)
• M18: 14,490,499 km (0.109 R)
• M19: 15,429,375 km (0.086 R)
• M20: 17,507,588 km (0.09 R)
• M21: 18,907,675 km (0.079 R)
• M22: 19,419,000 km (0.101 R)
• M23: 19,591,636 km (0.099 R)
• M24: 23,748,512 km (0.073 R)
• M25: 24,544,223 km (0.094 R)
• M26: 24,745,881 km (0.076 R)
• M27: 25,357,437 km (0.118 R)
• M28: 26,930,609 km (0.119 R)
• M29: 29,809,321 km (0.108 R)
• M30: 31,678,995 km (0.11 R)
• M31: 32,278,882 km (0.072 R)
• M32: 33,501,546 km (0.115 R)
• M33: 35,392,612 km (0.117 R)
• M34: 44,711,812 km (0.118 R)
• M35: 45,314,841 km (0.107 R)
• M36: 58,540,639 km (0.101 R)
• M37: 59,262,149 km (0.079 R)
• M38: 59,807,134 km (0.095 R)
• M39: 61,833,886 km (0.063 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 750.3

Radius: 4.1

Gravity: 44.63 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 7.29 AU - 11.17 AU

Year: 18106 Days

Day: 15 Hours

Environment

Temp: -237 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 73,399,559 km

• M1: 51,162 km (0.063 R)
• M2: 180,864 km (0.073 R)
• M3: 430,692 km (0.116 R)
• M4: 790,176 km (0.105 R)
• M5: 1,355,058 km (0.119 R)
• M6: 2,236,189 km (0.087 R)
• M7: 2,858,217 km (0.084 R)
• M8: 4,996,120 km (0.085 R)
• M9: 5,882,787 km (0.115 R)
• M10: 6,914,713 km (0.06 R)
• M11: 8,680,416 km (0.108 R)
• M12: 11,536,689 km (0.059 R)
• M13: 11,989,970 km (0.116 R)
• M14: 12,794,657 km (0.101 R)
• M15: 13,850,220 km (0.098 R)
• M16: 15,269,006 km (0.082 R)
• M17: 17,872,607 km (0.093 R)
• M18: 18,479,077 km (0.069 R)
• M19: 19,009,701 km (0.107 R)
• M20: 21,914,592 km (0.104 R)
• M21: 22,111,463 km (0.059 R)
• M22: 22,609,175 km (0.092 R)
• M23: 28,350,891 km (0.118 R)
• M24: 28,702,296 km (0.077 R)
• M25: 29,175,175 km (0.095 R)
• M26: 34,061,640 km (0.089 R)
• M27: 37,464,842 km (0.114 R)
• M28: 38,456,825 km (0.049 R)
• M29: 39,611,721 km (0.051 R)
• M30: 39,904,035 km (0.071 R)
• M31: 42,294,609 km (0.092 R)
• M32: 45,895,729 km (0.105 R)
• M33: 47,688,061 km (0.119 R)
• M34: 57,727,275 km (0.088 R)
• M35: 58,291,409 km (0.089 R)
• M36: 60,778,922 km (0.069 R)
• M37: 65,555,433 km (0.082 R)
• M38: 66,994,265 km (0.068 R)
• M39: 67,617,340 km (0.04 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 516 - 17,457 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit