🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.49

Radius: 0.75

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.41 AU - 0.65 AU

Year: 253 Days

Day: 44.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 34.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.67

Radius: 0.85

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.49 AU - 0.63 AU

Year: 275 Days

Day: 23.5 Hours

Environment

Temp: -118 °C

Axial Tilt: 0 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 520.8

Radius: 10.6

Gravity: 4.64 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.62 AU - 0.8 AU

Year: 392 Days

Day: 5.6 Hours

Environment

Temp: -142 °C

Axial Tilt: 87.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 60,650,738 km

• M1: 131,945 km (0.045 R)
• M2: 506,838 km (0.111 R)
• M3: 898,036 km (0.109 R)
• M4: 1,409,661 km (0.088 R)
• M5: 1,826,740 km (0.057 R)
• M6: 2,166,476 km (0.093 R)
• M7: 2,651,173 km (0.098 R)
• M8: 3,058,678 km (0.079 R)
• M9: 3,507,920 km (0.096 R)
• M10: 4,350,605 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 676.7

Radius: 11.8

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.81 AU - 2.21 AU

Year: 1869 Days

Day: 6.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 60,650,738 km

• M1: 200,012 km (0.04 R)
• M2: 949,049 km (0.113 R)
• M3: 1,325,288 km (0.054 R)
• M4: 1,888,823 km (0.05 R)
• M5: 2,747,215 km (0.097 R)
• M6: 3,147,838 km (0.07 R)
• M7: 4,672,989 km (0.109 R)
• M8: 5,774,478 km (0.098 R)
• M9: 7,041,422 km (0.068 R)
• M10: 9,844,138 km (0.088 R)
• M11: 13,277,409 km (0.064 R)
• M12: 13,868,321 km (0.104 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 660.9

Radius: 9.8

Gravity: 6.88 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 2.05 AU - 3.41 AU

Year: 2959 Days

Day: 6.6 Hours

Environment

Temp: -204 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 60,650,738 km

• M1: 121,922 km (0.059 R)
• M2: 669,750 km (0.105 R)
• M3: 1,371,812 km (0.119 R)
• M4: 1,749,846 km (0.058 R)
• M5: 2,292,887 km (0.12 R)
• M6: 3,252,557 km (0.076 R)
• M7: 3,638,968 km (0.115 R)
• M8: 6,051,832 km (0.092 R)
• M9: 6,813,435 km (0.09 R)
• M10: 8,908,104 km (0.113 R)
• M11: 9,228,693 km (0.038 R)
• M12: 10,275,728 km (0.065 R)
• M13: 11,193,361 km (0.102 R)
• M14: 12,604,219 km (0.089 R)
• M15: 15,314,783 km (0.118 R)
• M16: 16,193,072 km (0.059 R)
• M17: 16,887,056 km (0.064 R)
• M18: 17,712,238 km (0.083 R)
• M19: 18,163,276 km (0.054 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 797.9

Radius: 14.4

Gravity: 3.85 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 3.01 AU - 3.35 AU

Year: 3720 Days

Day: 6.8 Hours

Environment

Temp: -203 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 60,650,738 km

• M1: 179,069 km (0.094 R)
• M2: 753,973 km (0.096 R)
• M3: 1,289,833 km (0.053 R)
• M4: 1,751,641 km (0.086 R)
• M5: 2,238,882 km (0.113 R)
• M6: 3,026,365 km (0.037 R)
• M7: 3,476,206 km (0.058 R)
• M8: 5,053,117 km (0.065 R)
• M9: 5,747,251 km (0.068 R)
• M10: 7,098,718 km (0.095 R)
• M11: 8,146,950 km (0.043 R)
• M12: 8,689,991 km (0.085 R)
• M13: 10,634,913 km (0.103 R)
• M14: 11,417,758 km (0.062 R)
• M15: 11,960,799 km (0.12 R)
• M16: 14,621,097 km (0.06 R)
• M17: 17,535,114 km (0.103 R)
• M18: 20,551,007 km (0.067 R)
• M19: 21,560,494 km (0.058 R)
• M20: 22,042,797 km (0.096 R)
• M21: 23,244,068 km (0.094 R)
• M22: 25,931,594 km (0.094 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 655.5

Radius: 11.1

Gravity: 5.32 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 4.21 AU - 6.09 AU

Year: 7667 Days

Day: 7.2 Hours

Environment

Temp: -216 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 60,650,738 km

• M1: 139,276 km (0.1 R)
• M2: 732,282 km (0.117 R)
• M3: 1,089,820 km (0.028 R)
• M4: 2,024,059 km (0.089 R)
• M5: 2,661,496 km (0.064 R)
• M6: 3,636,126 km (0.076 R)
• M7: 5,461,220 km (0.104 R)
• M8: 9,903,678 km (0.04 R)
• M9: 11,269,058 km (0.119 R)
• M10: 11,629,140 km (0.054 R)
• M11: 12,050,258 km (0.108 R)
• M12: 14,855,069 km (0.108 R)
• M13: 16,245,730 km (0.119 R)
• M14: 17,378,485 km (0.088 R)
• M15: 18,279,663 km (0.058 R)
• M16: 19,284,662 km (0.059 R)
• M17: 19,800,774 km (0.064 R)
• M18: 20,175,068 km (0.092 R)
• M19: 21,719,666 km (0.072 R)
• M20: 24,182,197 km (0.118 R)
• M21: 24,955,917 km (0.071 R)
• M22: 29,170,687 km (0.091 R)
• M23: 32,161,448 km (0.105 R)
• M24: 36,459,395 km (0.074 R)
• M25: 38,512,625 km (0.079 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 400.1

Radius: 7

Gravity: 8.17 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 7.43 AU - 10.33 AU

Year: 17359 Days

Day: 20 Hours

Environment

Temp: -221 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 60,650,738 km

• M1: 87,066 km (0.116 R)
• M2: 719,267 km (0.093 R)
• M3: 979,118 km (0.114 R)
• M4: 1,859,053 km (0.026 R)
• M5: 2,358,261 km (0.027 R)
• M6: 2,716,249 km (0.065 R)
• M7: 3,014,098 km (0.062 R)
• M8: 4,247,233 km (0.075 R)
• M9: 5,009,584 km (0.111 R)
• M10: 5,566,238 km (0.089 R)
• M11: 6,086,539 km (0.116 R)
• M12: 7,138,362 km (0.104 R)
• M13: 8,212,325 km (0.091 R)
• M14: 9,389,959 km (0.075 R)
• M15: 9,912,505 km (0.063 R)
• M16: 10,344,394 km (0.085 R)
• M17: 11,361,809 km (0.081 R)
• M18: 13,267,985 km (0.119 R)
• M19: 15,377,913 km (0.094 R)
• M20: 16,927,897 km (0.114 R)
• M21: 17,234,572 km (0.069 R)
• M22: 20,421,755 km (0.107 R)
• M23: 20,944,749 km (0.066 R)
• M24: 24,271,207 km (0.068 R)
• M25: 26,365,727 km (0.103 R)
• M26: 26,881,690 km (0.116 R)
• M27: 27,721,084 km (0.079 R)
• M28: 32,065,256 km (0.107 R)
• M29: 39,466,761 km (0.039 R)
• M30: 44,938,004 km (0.08 R)
• M31: 52,339,209 km (0.117 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 439.4

Radius: 7.1

Gravity: 8.72 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 8.19 AU - 9.85 AU

Year: 17771 Days

Day: 18.4 Hours

Environment

Temp: -219 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 60,650,738 km

• M1: 90,058 km (0.094 R)
• M2: 412,890 km (0.055 R)
• M3: 915,090 km (0.095 R)
• M4: 1,756,429 km (0.102 R)
• M5: 1,981,274 km (0.069 R)
• M6: 3,544,422 km (0.065 R)
• M7: 6,620,005 km (0.117 R)
• M8: 7,040,375 km (0.101 R)
• M9: 9,519,062 km (0.055 R)
• M10: 10,109,525 km (0.066 R)
• M11: 11,186,330 km (0.064 R)
• M12: 11,601,764 km (0.092 R)
• M13: 13,169,849 km (0.065 R)
• M14: 14,382,788 km (0.102 R)
• M15: 17,978,971 km (0.099 R)
• M16: 21,672,842 km (0.08 R)
• M17: 23,551,492 km (0.088 R)
• M18: 25,130,498 km (0.048 R)
• M19: 51,685,765 km (0.101 R)
• M20: 55,191,292 km (0.114 R)
• M21: 55,704,562 km (0.108 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 344 - 11,314 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit