🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 421.5

Radius: 14.3

Gravity: 2.06 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.54 AU - 0.56 AU

Year: 277 Days

Day: 12.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 39,398,798 km

• M1: 177,872 km (0.112 R)
• M2: 697,575 km (0.043 R)
• M3: 1,250,788 km (0.086 R)
• M4: 1,824,645 km (0.079 R)
• M5: 2,282,864 km (0.104 R)
• M6: 2,970,415 km (0.113 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 284.3

Radius: 11

Gravity: 2.35 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.49 AU - 0.65 AU

Year: 292 Days

Day: 8.4 Hours

Environment

Temp: -153 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 39,398,798 km

• M1: 137,032 km (0.052 R)
• M2: 514,766 km (0.116 R)
• M3: 1,071,869 km (0.049 R)
• M4: 1,428,360 km (0.028 R)
• M5: 1,777,372 km (0.11 R)
• M6: 2,620,356 km (0.075 R)
• M7: 3,050,600 km (0.039 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 175.8

Radius: 11.8

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.51 AU - 0.77 AU

Year: 347 Days

Day: 12.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 39,398,798 km

• M1: 146,756 km (0.119 R)
• M2: 538,403 km (0.095 R)
• M3: 1,069,475 km (0.114 R)
• M4: 1,457,831 km (0.095 R)
• M5: 2,021,067 km (0.105 R)
• M6: 2,464,176 km (0.114 R)
• M7: 2,980,738 km (0.066 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 173.9

Radius: 14.3

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 1.05 AU - 1.31 AU

Year: 869 Days

Day: 7.9 Hours

Environment

Temp: -175 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 39,398,798 km

• M1: 178,021 km (0.111 R)
• M2: 736,620 km (0.081 R)
• M3: 1,181,823 km (0.108 R)
• M4: 1,664,426 km (0.111 R)
• M5: 2,615,569 km (0.1 R)
• M6: 3,203,489 km (0.091 R)
• M7: 3,917,819 km (0.117 R)
• M8: 4,618,984 km (0.11 R)
• M9: 5,451,646 km (0.087 R)
• M10: 5,956,389 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.2

Radius: 12.5

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 1.14 AU - 1.22 AU

Year: 869 Days

Day: 10.5 Hours

Environment

Temp: -191 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 39,398,798 km

• M1: 155,432 km (0.11 R)
• M2: 586,723 km (0.116 R)
• M3: 1,001,707 km (0.107 R)
• M4: 1,458,130 km (0.116 R)
• M5: 1,876,406 km (0.084 R)
• M6: 2,741,979 km (0.033 R)
• M7: 3,196,757 km (0.062 R)
• M8: 3,632,535 km (0.069 R)
• M9: 4,033,458 km (0.072 R)
• M10: 4,908,157 km (0.117 R)
• M11: 6,607,588 km (0.12 R)
• M12: 7,869,446 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 668.6

Radius: 12.6

Gravity: 4.21 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 3.08 AU - 3.2 AU

Year: 3774 Days

Day: 5.2 Hours

Environment

Temp: -206 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 39,398,798 km

• M1: 156,629 km (0.086 R)
• M2: 615,894 km (0.082 R)
• M3: 1,117,945 km (0.101 R)
• M4: 1,510,639 km (0.105 R)
• M5: 2,173,657 km (0.102 R)
• M6: 2,988,965 km (0.109 R)
• M7: 3,747,427 km (0.09 R)
• M8: 4,583,230 km (0.096 R)
• M9: 6,932,665 km (0.114 R)
• M10: 8,122,117 km (0.104 R)
• M11: 9,637,244 km (0.091 R)
• M12: 10,524,360 km (0.055 R)
• M13: 10,945,179 km (0.071 R)
• M14: 11,597,425 km (0.111 R)
• M15: 12,601,077 km (0.082 R)
• M16: 13,220,712 km (0.072 R)
• M17: 17,317,300 km (0.105 R)
• M18: 17,905,070 km (0.115 R)
• M19: 18,324,243 km (0.115 R)
• M20: 18,934,602 km (0.115 R)
• M21: 19,432,464 km (0.054 R)
• M22: 20,781,239 km (0.086 R)
• M23: 22,675,596 km (0.112 R)
• M24: 24,170,079 km (0.045 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 456.2

Radius: 8.4

Gravity: 6.47 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 4.53 AU - 5.09 AU

Year: 7155 Days

Day: 8.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 39,398,798 km

• M1: 104,419 km (0.119 R)
• M2: 400,473 km (0.095 R)
• M3: 1,042,248 km (0.07 R)
• M4: 1,674,898 km (0.028 R)
• M5: 2,273,140 km (0.058 R)
• M6: 5,187,605 km (0.082 R)
• M7: 5,873,063 km (0.109 R)
• M8: 6,253,939 km (0.092 R)
• M9: 9,571,122 km (0.067 R)
• M10: 10,234,589 km (0.071 R)
• M11: 14,413,755 km (0.108 R)
• M12: 15,763,576 km (0.085 R)
• M13: 23,400,099 km (0.07 R)
• M14: 25,259,750 km (0.064 R)
• M15: 26,696,039 km (0.103 R)
• M16: 27,477,987 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 519.9

Radius: 3.1

Gravity: 54.1 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 6.47 AU - 8.89 AU

Year: 14436 Days

Day: 18.8 Hours

Environment

Temp: -225 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 39,398,798 km

• M1: 38,596 km (0.117 R)
• M2: 144,960 km (0.076 R)
• M3: 427,401 km (0.104 R)
• M4: 533,616 km (0.094 R)
• M5: 708,795 km (0.08 R)
• M6: 1,224,758 km (0.097 R)
• M7: 2,290,643 km (0.049 R)
• M8: 2,493,348 km (0.057 R)
• M9: 4,506,785 km (0.078 R)
• M10: 6,766,461 km (0.1 R)
• M11: 7,617,075 km (0.027 R)
• M12: 8,489,081 km (0.094 R)
• M13: 9,734,782 km (0.084 R)
• M14: 9,839,351 km (0.073 R)
• M15: 11,326,504 km (0.112 R)
• M16: 15,013,941 km (0.08 R)
• M17: 17,741,709 km (0.081 R)
• M18: 23,677,005 km (0.11 R)
• M19: 24,152,277 km (0.091 R)
• M20: 25,715,874 km (0.099 R)
• M21: 26,829,181 km (0.081 R)
• M22: 26,931,955 km (0.109 R)
• M23: 27,868,887 km (0.084 R)
• M24: 37,811,610 km (0.111 R)
• M25: 38,985,205 km (0.118 R)
• M26: 49,723,340 km (0.085 R)
• M27: 54,353,544 km (0.109 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 160.3

Radius: 4

Gravity: 10.02 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 7.72 AU - 8.32 AU

Year: 15405 Days

Day: 16.7 Hours

Environment

Temp: -226 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 39,398,798 km

• M1: 50,115 km (0.11 R)
• M2: 315,352 km (0.117 R)
• M3: 621,430 km (0.027 R)
• M4: 841,638 km (0.075 R)
• M5: 1,978,881 km (0.096 R)
• M6: 2,208,962 km (0.109 R)
• M7: 2,493,348 km (0.101 R)
• M8: 2,683,187 km (0.106 R)
• M9: 3,805,321 km (0.107 R)
• M10: 4,031,663 km (0.112 R)
• M11: 4,538,799 km (0.071 R)
• M12: 4,997,915 km (0.057 R)
• M13: 6,812,986 km (0.106 R)
• M14: 9,337,301 km (0.112 R)
• M15: 10,268,398 km (0.101 R)
• M16: 11,673,720 km (0.119 R)
• M17: 12,151,386 km (0.106 R)
• M18: 16,783,236 km (0.059 R)
• M19: 19,376,814 km (0.083 R)
• M20: 19,970,717 km (0.062 R)
• M21: 21,038,996 km (0.116 R)
• M22: 23,539,075 km (0.109 R)
• M23: 27,048,342 km (0.043 R)
• M24: 28,071,143 km (0.07 R)
• M25: 28,449,326 km (0.073 R)
• M26: 29,216,015 km (0.046 R)
• M27: 30,491,038 km (0.104 R)
• M28: 32,007,661 km (0.059 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 196 - 16,080 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit