🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.13

Radius: 1.05

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.59 AU - 0.69 AU

Year: 331 Days

Day: 31 Hours

Environment

Temp: -142 °C

Axial Tilt: 15.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 553

Radius: 11.7

Gravity: 4.04 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.78 AU - 1.18 AU

Year: 626 Days

Day: 9.2 Hours

Environment

Temp: -163 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 31,083,812 km

• M1: 145,559 km (0.11 R)
• M2: 580,141 km (0.088 R)
• M3: 1,539,960 km (0.038 R)
• M4: 2,237,685 km (0.044 R)
• M5: 2,827,400 km (0.083 R)
• M6: 3,329,749 km (0.087 R)
• M7: 3,974,516 km (0.062 R)
• M8: 4,500,054 km (0.074 R)
• M9: 6,437,496 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 123.2

Radius: 11.1

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 1.21 AU - 1.29 AU

Year: 902 Days

Day: 10.9 Hours

Environment

Temp: -174 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 31,083,812 km

• M1: 138,228 km (0.067 R)
• M2: 542,442 km (0.079 R)
• M3: 932,294 km (0.102 R)
• M4: 2,753,798 km (0.111 R)
• M5: 3,304,916 km (0.114 R)
• M6: 5,192,692 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 346.7

Radius: 10.8

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 1.69 AU - 2.75 AU

Year: 2136 Days

Day: 7.6 Hours

Environment

Temp: -188 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 31,083,812 km

• M1: 134,339 km (0.095 R)
• M2: 502,798 km (0.065 R)
• M3: 1,171,800 km (0.073 R)
• M4: 1,591,871 km (0.114 R)
• M5: 2,157,650 km (0.045 R)
• M6: 2,520,425 km (0.081 R)
• M7: 3,201,843 km (0.044 R)
• M8: 3,966,887 km (0.116 R)
• M9: 4,402,366 km (0.113 R)
• M10: 5,632,809 km (0.12 R)
• M11: 6,160,889 km (0.107 R)
• M12: 6,621,800 km (0.09 R)
• M13: 7,558,432 km (0.087 R)
• M14: 8,581,083 km (0.041 R)
• M15: 10,486,960 km (0.097 R)
• M16: 10,899,701 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 521.1

Radius: 10.3

Gravity: 4.91 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 1.9 AU - 2.54 AU

Year: 2136 Days

Day: 5.7 Hours

Environment

Temp: -184 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 31,083,812 km

• M1: 128,505 km (0.078 R)
• M2: 479,611 km (0.1 R)
• M3: 945,758 km (0.082 R)
• M4: 1,335,311 km (0.113 R)
• M5: 1,974,841 km (0.089 R)
• M6: 2,736,145 km (0.115 R)
• M7: 3,184,939 km (0.112 R)
• M8: 3,895,529 km (0.043 R)
• M9: 5,724,961 km (0.059 R)
• M10: 6,411,466 km (0.103 R)
• M11: 7,207,177 km (0.043 R)
• M12: 8,399,172 km (0.114 R)
• M13: 10,338,858 km (0.097 R)
• M14: 11,133,223 km (0.084 R)
• M15: 12,084,666 km (0.115 R)
• M16: 12,480,202 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 617.7

Radius: 11.2

Gravity: 4.92 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 2.32 AU - 2.69 AU

Year: 2552 Days

Day: 12.2 Hours

Environment

Temp: -193 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 31,083,812 km

• M1: 139,425 km (0.117 R)
• M2: 633,697 km (0.078 R)
• M3: 1,367,773 km (0.087 R)
• M4: 1,790,986 km (0.104 R)
• M5: 2,328,341 km (0.076 R)
• M6: 2,987,170 km (0.033 R)
• M7: 3,655,125 km (0.093 R)
• M8: 4,504,242 km (0.117 R)
• M9: 5,010,033 km (0.097 R)
• M10: 5,504,603 km (0.103 R)
• M11: 6,320,809 km (0.097 R)
• M12: 8,066,766 km (0.057 R)
• M13: 9,786,693 km (0.087 R)
• M14: 13,442,117 km (0.09 R)
• M15: 15,746,223 km (0.071 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 147.3

Radius: 13.2

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 2.1 AU - 3.14 AU

Year: 2738 Days

Day: 8.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 31,083,812 km

• M1: 164,408 km (0.118 R)
• M2: 1,334,413 km (0.103 R)
• M3: 1,843,794 km (0.09 R)
• M4: 2,822,463 km (0.109 R)
• M5: 3,903,457 km (0.099 R)
• M6: 4,331,906 km (0.105 R)
• M7: 7,975,810 km (0.092 R)
• M8: 8,901,223 km (0.115 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 332.5

Radius: 11

Gravity: 2.75 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 3.05 AU - 4.11 AU

Year: 4374 Days

Day: 13.6 Hours

Environment

Temp: -198 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 31,083,812 km

• M1: 136,882 km (0.079 R)
• M2: 877,242 km (0.066 R)
• M3: 1,367,624 km (0.102 R)
• M4: 1,887,776 km (0.076 R)
• M5: 2,390,424 km (0.102 R)
• M6: 2,752,750 km (0.111 R)
• M7: 4,544,035 km (0.086 R)
• M8: 4,984,451 km (0.082 R)
• M9: 5,737,976 km (0.052 R)
• M10: 6,197,690 km (0.111 R)
• M11: 7,758,894 km (0.106 R)
• M12: 13,570,322 km (0.108 R)
• M13: 16,497,354 km (0.099 R)
• M14: 17,096,493 km (0.085 R)
• M15: 19,218,988 km (0.102 R)
• M16: 21,191,586 km (0.096 R)
• M17: 21,705,005 km (0.06 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 158.6

Radius: 11.6

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 4.67 AU - 5.03 AU

Year: 6896 Days

Day: 12.6 Hours

Environment

Temp: -211 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 31,083,812 km

• M1: 152,739 km (0.119 R)
• M2: 718,519 km (0.108 R)
• M3: 1,139,936 km (0.044 R)
• M4: 1,562,101 km (0.067 R)
• M5: 2,863,303 km (0.061 R)
• M6: 5,075,706 km (0.056 R)
• M7: 6,270,544 km (0.1 R)
• M8: 9,775,922 km (0.118 R)
• M9: 12,322,526 km (0.073 R)
• M10: 14,165,273 km (0.074 R)
• M11: 15,230,260 km (0.097 R)

Planet 10 - Ice Giant

Semi-Major Axis: 6.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 147

Radius: 3.6

Gravity: 11.34 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 5.51 AU - 7.95 AU

Year: 11273 Days

Day: 23.7 Hours

Environment

Temp: -222 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 31,083,812 km

• M1: 44,730 km (0.107 R)
• M2: 176,675 km (0.116 R)
• M3: 344,673 km (0.113 R)
• M4: 541,544 km (0.087 R)
• M5: 683,213 km (0.09 R)
• M6: 960,568 km (0.119 R)
• M7: 1,286,392 km (0.096 R)
• M8: 1,445,265 km (0.104 R)
• M9: 1,986,959 km (0.054 R)
• M10: 2,564,556 km (0.07 R)
• M11: 3,520,487 km (0.118 R)
• M12: 4,459,662 km (0.082 R)
• M13: 4,797,753 km (0.043 R)
• M14: 6,258,876 km (0.037 R)
• M15: 7,264,772 km (0.087 R)
• M16: 7,659,112 km (0.1 R)
• M17: 8,807,126 km (0.115 R)
• M18: 10,374,912 km (0.074 R)
• M19: 10,645,534 km (0.115 R)
• M20: 11,342,810 km (0.102 R)
• M21: 11,922,053 km (0.088 R)
• M22: 16,785,779 km (0.063 R)
• M23: 17,033,812 km (0.056 R)
• M24: 18,507,501 km (0.097 R)
• M25: 19,376,963 km (0.085 R)
• M26: 23,434,955 km (0.093 R)
• M27: 24,057,282 km (0.069 R)
• M28: 25,825,230 km (0.094 R)
• M29: 26,072,964 km (0.104 R)
• M30: 28,198,451 km (0.063 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 227 - 17,188 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit