🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.41

Radius: 1.42

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.65 AU - 0.67 AU

Year: 346 Days

Day: 27.3 Hours

Environment

Temp: -132 °C

Axial Tilt: 2.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 878.4

Radius: 9.8

Gravity: 9.15 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.75 AU - 0.87 AU

Year: 471 Days

Day: 8.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 35,214,427 km

• M1: 129,402 km (0.087 R)
• M2: 594,951 km (0.099 R)
• M3: 920,775 km (0.113 R)
• M4: 1,395,898 km (0.089 R)
• M5: 1,703,172 km (0.039 R)
• M6: 2,056,073 km (0.118 R)
• M7: 2,477,939 km (0.045 R)
• M8: 2,845,501 km (0.058 R)
• M9: 3,165,641 km (0.1 R)
• M10: 3,717,657 km (0.101 R)
• M11: 6,169,117 km (0.115 R)
• M12: 6,729,062 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 598.8

Radius: 11.1

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 1.17 AU - 1.75 AU

Year: 1139 Days

Day: 9.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 35,214,427 km

• M1: 139,126 km (0.1 R)
• M2: 548,575 km (0.067 R)
• M3: 897,886 km (0.087 R)
• M4: 1,365,978 km (0.115 R)
• M5: 1,840,203 km (0.117 R)
• M6: 2,255,637 km (0.069 R)
• M7: 2,746,019 km (0.093 R)
• M8: 3,180,600 km (0.114 R)
• M9: 3,784,677 km (0.107 R)
• M10: 4,569,617 km (0.056 R)
• M11: 5,202,565 km (0.034 R)
• M12: 6,327,392 km (0.056 R)
• M13: 8,497,907 km (0.114 R)
• M14: 10,236,384 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 645.7

Radius: 8.9

Gravity: 8.15 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 1.14 AU - 1.82 AU

Year: 1163 Days

Day: 7.8 Hours

Environment

Temp: -170 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 35,214,427 km

• M1: 110,702 km (0.066 R)
• M2: 470,485 km (0.085 R)
• M3: 897,138 km (0.089 R)
• M4: 1,175,540 km (0.076 R)
• M5: 2,480,931 km (0.092 R)
• M6: 2,855,973 km (0.046 R)
• M7: 3,154,720 km (0.076 R)
• M8: 3,657,818 km (0.109 R)
• M9: 4,565,877 km (0.064 R)
• M10: 5,828,483 km (0.106 R)
• M11: 6,199,785 km (0.1 R)
• M12: 6,540,569 km (0.096 R)
• M13: 8,435,824 km (0.087 R)
• M14: 9,112,904 km (0.086 R)
• M15: 9,643,976 km (0.104 R)
• M16: 10,226,959 km (0.092 R)
• M17: 10,996,491 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 120.1

Radius: 14.3

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 1.46 AU - 1.56 AU

Year: 1198 Days

Day: 5.5 Hours

Environment

Temp: -186 °C

Axial Tilt: 45.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 35,214,427 km

• M1: 177,872 km (0.099 R)
• M2: 671,545 km (0.116 R)
• M3: 1,467,106 km (0.045 R)
• M4: 1,919,490 km (0.077 R)
• M5: 2,574,729 km (0.118 R)
• M6: 3,050,749 km (0.084 R)
• M7: 5,181,023 km (0.07 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 379.7

Radius: 14.1

Gravity: 1.91 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 2.71 AU - 3.25 AU

Year: 3322 Days

Day: 9 Hours

Environment

Temp: -210 °C

Axial Tilt: 48.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 35,214,427 km

• M1: 175,777 km (0.055 R)
• M2: 866,172 km (0.113 R)
• M3: 2,389,976 km (0.086 R)
• M4: 3,105,053 km (0.087 R)
• M5: 4,057,094 km (0.066 R)
• M6: 5,457,031 km (0.108 R)
• M7: 6,006,355 km (0.109 R)
• M8: 7,216,900 km (0.069 R)
• M9: 7,849,400 km (0.12 R)
• M10: 8,420,715 km (0.104 R)
• M11: 8,985,746 km (0.07 R)
• M12: 9,754,529 km (0.08 R)
• M13: 10,229,203 km (0.102 R)
• M14: 12,284,379 km (0.09 R)
• M15: 12,968,789 km (0.057 R)
• M16: 13,814,466 km (0.112 R)
• M17: 16,573,499 km (0.112 R)
• M18: 17,145,412 km (0.077 R)
• M19: 18,055,266 km (0.097 R)
• M20: 18,772,588 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 468.6

Radius: 14.7

Gravity: 2.17 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 4.77 AU - 4.79 AU

Year: 6748 Days

Day: 14.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 35,214,427 km

• M1: 182,958 km (0.083 R)
• M2: 832,961 km (0.074 R)
• M3: 1,312,572 km (0.092 R)
• M4: 2,442,335 km (0.095 R)
• M5: 3,010,807 km (0.112 R)
• M6: 3,623,560 km (0.093 R)
• M7: 4,294,656 km (0.074 R)
• M8: 4,778,306 km (0.091 R)
• M9: 9,262,053 km (0.031 R)
• M10: 9,813,471 km (0.086 R)
• M11: 10,567,594 km (0.102 R)
• M12: 11,170,174 km (0.102 R)
• M13: 11,992,663 km (0.091 R)
• M14: 13,596,352 km (0.052 R)
• M15: 14,704,274 km (0.099 R)
• M16: 15,338,868 km (0.076 R)
• M17: 15,931,724 km (0.087 R)
• M18: 16,911,890 km (0.097 R)
• M19: 18,457,086 km (0.065 R)
• M20: 19,332,533 km (0.076 R)
• M21: 21,093,749 km (0.12 R)
• M22: 23,814,784 km (0.071 R)
• M23: 26,592,218 km (0.12 R)
• M24: 32,395,120 km (0.077 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 261.8

Radius: 4.9

Gravity: 10.9 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 5.23 AU - 7.35 AU

Year: 10186 Days

Day: 17.2 Hours

Environment

Temp: -216 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 35,214,427 km

• M1: 60,886 km (0.09 R)
• M2: 216,019 km (0.116 R)
• M3: 534,812 km (0.067 R)
• M4: 918,232 km (0.093 R)
• M5: 1,347,428 km (0.072 R)
• M6: 2,361,702 km (0.087 R)
• M7: 2,759,482 km (0.096 R)
• M8: 4,222,101 km (0.104 R)
• M9: 5,720,323 km (0.069 R)
• M10: 6,038,069 km (0.081 R)
• M11: 7,171,124 km (0.075 R)
• M12: 7,465,831 km (0.041 R)
• M13: 8,809,220 km (0.088 R)
• M14: 10,167,419 km (0.096 R)
• M15: 10,681,288 km (0.102 R)
• M16: 12,378,775 km (0.073 R)
• M17: 13,849,023 km (0.026 R)
• M18: 14,363,789 km (0.112 R)
• M19: 15,371,032 km (0.108 R)
• M20: 17,924,817 km (0.117 R)
• M21: 19,091,082 km (0.119 R)
• M22: 23,209,661 km (0.064 R)
• M23: 23,611,032 km (0.085 R)
• M24: 26,377,246 km (0.105 R)
• M25: 26,639,042 km (0.117 R)
• M26: 27,973,605 km (0.096 R)
• M27: 31,847,741 km (0.116 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 521 - 19,646 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit