🌌 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: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.48

Radius: 1.17

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.63 AU - 0.67 AU

Year: 344 Days

Day: 34.3 Hours

Environment

Temp: -129 °C

Axial Tilt: 0.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 92,748,080 km

• M1: 144,811 km (0.04 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 311.9

Radius: 13.3

Gravity: 1.76 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.52 AU - 0.86 AU

Year: 376 Days

Day: 7.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 92,748,080 km

• M1: 165,455 km (0.089 R)
• M2: 604,824 km (0.047 R)
• M3: 1,023,698 km (0.113 R)
• M4: 1,504,955 km (0.114 R)
• M5: 1,958,236 km (0.03 R)
• M6: 2,453,704 km (0.053 R)
• M7: 2,882,302 km (0.1 R)
• M8: 3,571,948 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 908.6

Radius: 9.2

Gravity: 10.73 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 1.22 AU - 1.9 AU

Year: 1278 Days

Day: 11.1 Hours

Environment

Temp: -181 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 92,748,080 km

• M1: 114,592 km (0.102 R)
• M2: 414,685 km (0.117 R)
• M3: 882,328 km (0.087 R)
• M4: 1,329,775 km (0.094 R)
• M5: 1,830,928 km (0.061 R)
• M6: 2,367,237 km (0.031 R)
• M7: 2,821,715 km (0.08 R)
• M8: 3,241,636 km (0.113 R)
• M9: 3,940,857 km (0.07 R)
• M10: 4,447,993 km (0.109 R)
• M11: 4,737,316 km (0.089 R)
• M12: 5,396,743 km (0.073 R)
• M13: 5,726,307 km (0.086 R)
• M14: 6,069,335 km (0.062 R)
• M15: 7,260,433 km (0.04 R)
• M16: 7,939,309 km (0.098 R)
• M17: 8,366,560 km (0.096 R)
• M18: 11,946,736 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 947.6

Radius: 14.2

Gravity: 4.7 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 1.48 AU - 1.72 AU

Year: 1328 Days

Day: 14.9 Hours

Environment

Temp: -184 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 92,748,080 km

• M1: 177,872 km (0.088 R)
• M2: 692,489 km (0.05 R)
• M3: 1,252,583 km (0.072 R)
• M4: 2,106,188 km (0.083 R)
• M5: 2,895,916 km (0.06 R)
• M6: 3,447,184 km (0.102 R)
• M7: 4,724,002 km (0.067 R)
• M8: 5,192,692 km (0.081 R)
• M9: 5,942,925 km (0.109 R)
• M10: 7,415,716 km (0.075 R)
• M11: 8,252,417 km (0.063 R)
• M12: 9,244,550 km (0.089 R)
• M13: 9,981,918 km (0.056 R)
• M14: 10,897,457 km (0.118 R)
• M15: 12,740,054 km (0.086 R)
• M16: 13,251,379 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 522.6

Radius: 14.8

Gravity: 2.39 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 2.52 AU - 3.36 AU

Year: 3307 Days

Day: 9.8 Hours

Environment

Temp: -202 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 92,748,080 km

• M1: 184,005 km (0.061 R)
• M2: 851,661 km (0.093 R)
• M3: 1,350,420 km (0.03 R)
• M4: 1,881,193 km (0.089 R)
• M5: 3,544,871 km (0.105 R)
• M6: 4,049,166 km (0.076 R)
• M7: 5,108,019 km (0.115 R)
• M8: 5,729,150 km (0.047 R)
• M9: 6,945,081 km (0.083 R)
• M10: 8,768,530 km (0.066 R)
• M11: 9,551,824 km (0.084 R)
• M12: 11,135,766 km (0.044 R)
• M13: 12,097,830 km (0.084 R)
• M14: 12,577,291 km (0.095 R)
• M15: 13,160,125 km (0.075 R)
• M16: 15,369,236 km (0.099 R)
• M17: 17,427,703 km (0.102 R)
• M18: 17,927,809 km (0.114 R)
• M19: 19,308,298 km (0.029 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 566.7

Radius: 9.1

Gravity: 6.84 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 2.33 AU - 3.73 AU

Year: 3460 Days

Day: 8.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 92,748,080 km

• M1: 113,096 km (0.084 R)
• M2: 418,126 km (0.102 R)
• M3: 789,727 km (0.091 R)
• M4: 1,117,047 km (0.104 R)
• M5: 1,442,273 km (0.113 R)
• M6: 1,967,212 km (0.108 R)
• M7: 2,331,632 km (0.114 R)
• M8: 4,974,877 km (0.08 R)
• M9: 5,320,897 km (0.068 R)
• M10: 6,256,781 km (0.087 R)
• M11: 8,010,068 km (0.074 R)
• M12: 9,991,043 km (0.087 R)
• M13: 10,543,359 km (0.11 R)
• M14: 11,494,801 km (0.117 R)
• M15: 13,567,779 km (0.06 R)
• M16: 13,855,306 km (0.051 R)
• M17: 15,667,535 km (0.107 R)
• M18: 19,390,876 km (0.12 R)
• M19: 20,815,945 km (0.064 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.57 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 496.9

Radius: 3.3

Gravity: 45.63 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 7.61 AU - 11.53 AU

Year: 19421 Days

Day: 18.9 Hours

Environment

Temp: -224 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 92,748,080 km

• M1: 54,154 km (0.108 R)
• M2: 191,635 km (0.107 R)
• M3: 336,595 km (0.089 R)
• M4: 522,695 km (0.083 R)
• M5: 626,815 km (0.12 R)
• M6: 910,602 km (0.089 R)
• M7: 1,302,100 km (0.099 R)
• M8: 1,608,476 km (0.074 R)
• M9: 2,075,970 km (0.112 R)
• M10: 2,582,508 km (0.087 R)
• M11: 3,631,040 km (0.108 R)
• M12: 4,107,808 km (0.105 R)
• M13: 5,442,670 km (0.083 R)
• M14: 7,221,688 km (0.035 R)
• M15: 10,591,230 km (0.048 R)
• M16: 11,249,161 km (0.119 R)
• M17: 19,303,511 km (0.085 R)
• M18: 20,192,272 km (0.087 R)
• M19: 24,428,883 km (0.076 R)
• M20: 28,193,963 km (0.063 R)
• M21: 39,610,823 km (0.05 R)
• M22: 47,115,401 km (0.095 R)
• M23: 47,274,423 km (0.115 R)
• M24: 51,704,914 km (0.109 R)
• M25: 54,631,796 km (0.076 R)
• M26: 55,513,227 km (0.091 R)
• M27: 58,397,474 km (0.108 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 875.9

Radius: 5.9

Gravity: 25.16 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 10.93 AU - 10.99 AU

Year: 23803 Days

Day: 23.4 Hours

Environment

Temp: -235 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 92,748,080 km

• M1: 73,453 km (0.094 R)
• M2: 267,780 km (0.098 R)
• M3: 595,998 km (0.094 R)
• M4: 1,020,407 km (0.12 R)
• M5: 1,798,017 km (0.115 R)
• M6: 2,196,246 km (0.096 R)
• M7: 3,979,004 km (0.114 R)
• M8: 4,219,558 km (0.057 R)
• M9: 4,579,939 km (0.106 R)
• M10: 5,784,950 km (0.103 R)
• M11: 7,037,981 km (0.095 R)
• M12: 7,493,208 km (0.103 R)
• M13: 13,407,260 km (0.03 R)
• M14: 13,637,491 km (0.114 R)
• M15: 14,504,710 km (0.089 R)
• M16: 17,783,746 km (0.105 R)
• M17: 24,027,512 km (0.094 R)
• M18: 29,084,968 km (0.045 R)
• M19: 30,385,721 km (0.116 R)
• M20: 32,963,143 km (0.067 R)
• M21: 35,389,620 km (0.088 R)
• M22: 36,273,744 km (0.084 R)
• M23: 37,932,634 km (0.072 R)
• M24: 40,116,315 km (0.09 R)
• M25: 44,561,765 km (0.093 R)
• M26: 45,765,579 km (0.098 R)
• M27: 52,491,050 km (0.104 R)
• M28: 54,806,078 km (0.068 R)
• M29: 64,529,191 km (0.086 R)
• M30: 65,406,134 km (0.062 R)
• M31: 72,709,651 km (0.112 R)
• M32: 73,659,149 km (0.101 R)
• M33: 78,282,322 km (0.076 R)
• M34: 79,029,563 km (0.095 R)
• M35: 86,234,346 km (0.104 R)
• M36: 89,995,536 km (0.111 R)
• M37: 91,640,364 km (0.06 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 518 - 14,105 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit