🌌 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 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.39

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.42 AU - 0.7 AU

Year: 266 Days

Day: 20.7 Hours

Environment

Temp: -129 °C

Axial Tilt: 1.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 73,042,914 km

• M1: 685,009 km (0.112 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 625.5

Radius: 8.6

Gravity: 8.46 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.85 AU - 0.95 AU

Year: 543 Days

Day: 12.7 Hours

Environment

Temp: -155 °C

Axial Tilt: 136.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 73,042,914 km

• M1: 106,962 km (0.109 R)
• M2: 425,905 km (0.112 R)
• M3: 766,539 km (0.112 R)
• M4: 1,061,696 km (0.091 R)
• M5: 1,433,896 km (0.112 R)
• M6: 1,967,362 km (0.103 R)
• M7: 2,464,924 km (0.069 R)
• M8: 2,952,763 km (0.11 R)
• M9: 3,478,450 km (0.035 R)
• M10: 4,009,073 km (0.092 R)
• M11: 4,794,313 km (0.086 R)
• M12: 5,182,070 km (0.071 R)
• M13: 5,521,059 km (0.05 R)
• M14: 6,112,868 km (0.051 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 834.3

Radius: 14.2

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.99 AU - 1.07 AU

Year: 665 Days

Day: 9.1 Hours

Environment

Temp: -155 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 73,042,914 km

• M1: 176,525 km (0.11 R)
• M2: 668,104 km (0.116 R)
• M3: 1,204,412 km (0.096 R)
• M4: 1,865,336 km (0.102 R)
• M5: 2,372,772 km (0.106 R)
• M6: 3,800,384 km (0.11 R)
• M7: 4,323,678 km (0.076 R)
• M8: 5,370,264 km (0.081 R)
• M9: 6,291,488 km (0.113 R)
• M10: 6,790,547 km (0.1 R)
• M11: 7,405,992 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 587.1

Radius: 13.1

Gravity: 3.42 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.25 AU - 1.63 AU

Year: 1099 Days

Day: 6.9 Hours

Environment

Temp: -171 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 73,042,914 km

• M1: 164,408 km (0.08 R)
• M2: 600,037 km (0.114 R)
• M3: 1,106,127 km (0.1 R)
• M4: 1,583,793 km (0.117 R)
• M5: 2,613,325 km (0.077 R)
• M6: 3,453,168 km (0.056 R)
• M7: 4,658,478 km (0.073 R)
• M8: 5,155,591 km (0.072 R)
• M9: 5,606,779 km (0.106 R)
• M10: 6,084,445 km (0.078 R)
• M11: 7,484,681 km (0.115 R)
• M12: 7,987,778 km (0.11 R)
• M13: 8,567,171 km (0.072 R)
• M14: 10,260,619 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 588.9

Radius: 12.5

Gravity: 3.77 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 1.12 AU - 1.78 AU

Year: 1110 Days

Day: 6 Hours

Environment

Temp: -169 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 73,042,914 km

• M1: 155,432 km (0.079 R)
• M2: 548,875 km (0.046 R)
• M3: 1,126,023 km (0.115 R)
• M4: 1,957,638 km (0.114 R)
• M5: 2,699,942 km (0.078 R)
• M6: 3,261,084 km (0.092 R)
• M7: 3,789,912 km (0.118 R)
• M8: 4,341,629 km (0.085 R)
• M9: 4,762,897 km (0.039 R)
• M10: 5,895,353 km (0.084 R)
• M11: 7,394,024 km (0.091 R)
• M12: 8,049,413 km (0.065 R)
• M13: 8,552,510 km (0.111 R)
• M14: 9,361,087 km (0.115 R)
• M15: 9,828,580 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 496.2

Radius: 14.8

Gravity: 2.27 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 2.31 AU - 3.43 AU

Year: 3091 Days

Day: 9.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 73,042,914 km

• M1: 186,698 km (0.079 R)
• M2: 659,577 km (0.09 R)
• M3: 1,488,948 km (0.088 R)
• M4: 3,305,664 km (0.066 R)
• M5: 3,775,850 km (0.073 R)
• M6: 5,036,212 km (0.061 R)
• M7: 5,688,160 km (0.095 R)
• M8: 6,506,011 km (0.062 R)
• M9: 8,149,194 km (0.12 R)
• M10: 9,154,791 km (0.064 R)
• M11: 11,413,270 km (0.059 R)
• M12: 12,585,519 km (0.04 R)
• M13: 13,836,756 km (0.095 R)
• M14: 14,397,748 km (0.12 R)
• M15: 15,022,618 km (0.099 R)
• M16: 17,006,585 km (0.037 R)
• M17: 19,274,938 km (0.089 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 431.1

Radius: 3.1

Gravity: 44.86 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 7.66 AU - 9.3 AU

Year: 15701 Days

Day: 21.3 Hours

Environment

Temp: -221 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 73,042,914 km

• M1: 38,596 km (0.096 R)
• M2: 139,276 km (0.038 R)
• M3: 367,412 km (0.045 R)
• M4: 749,037 km (0.04 R)
• M5: 1,349,373 km (0.102 R)
• M6: 1,643,033 km (0.108 R)
• M7: 1,907,223 km (0.114 R)
• M8: 2,335,372 km (0.056 R)
• M9: 2,604,200 km (0.065 R)
• M10: 3,277,540 km (0.099 R)
• M11: 3,404,399 km (0.059 R)
• M12: 3,749,521 km (0.079 R)
• M13: 4,386,060 km (0.103 R)
• M14: 5,024,544 km (0.115 R)
• M15: 5,261,806 km (0.101 R)
• M16: 5,578,056 km (0.087 R)
• M17: 6,403,836 km (0.098 R)
• M18: 7,137,614 km (0.074 R)
• M19: 12,257,152 km (0.058 R)
• M20: 13,126,615 km (0.106 R)
• M21: 14,438,887 km (0.06 R)
• M22: 14,918,199 km (0.092 R)
• M23: 16,567,366 km (0.093 R)
• M24: 17,397,484 km (0.109 R)
• M25: 17,551,271 km (0.118 R)
• M26: 24,573,096 km (0.092 R)
• M27: 25,255,412 km (0.071 R)
• M28: 26,454,439 km (0.086 R)
• M29: 31,175,299 km (0.079 R)
• M30: 36,302,167 km (0.114 R)
• M31: 37,956,121 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 853.4

Radius: 5.2

Gravity: 31.56 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 8 AU - 9.78 AU

Year: 16853 Days

Day: 17.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 73,042,914 km

• M1: 68,665 km (0.081 R)
• M2: 264,938 km (0.115 R)
• M3: 541,843 km (0.119 R)
• M4: 941,120 km (0.101 R)
• M5: 1,151,156 km (0.07 R)
• M6: 3,882,364 km (0.061 R)
• M7: 4,630,952 km (0.068 R)
• M8: 11,239,886 km (0.108 R)
• M9: 12,880,825 km (0.112 R)
• M10: 16,792,810 km (0.083 R)
• M11: 17,541,697 km (0.028 R)
• M12: 19,738,541 km (0.072 R)
• M13: 29,278,996 km (0.05 R)
• M14: 40,894,224 km (0.104 R)
• M15: 42,095,046 km (0.096 R)
• M16: 44,409,624 km (0.074 R)
• M17: 46,159,769 km (0.114 R)
• M18: 60,100,795 km (0.092 R)
• M19: 61,066,898 km (0.058 R)
• M20: 67,082,827 km (0.097 R)
• M21: 68,961,626 km (0.076 R)
• M22: 71,090,255 km (0.087 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 245 - 16,661 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit