🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.41 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.95

Radius: 0.98

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.62 AU - 1.02 AU

Year: 315 Days

Day: 23.6 Hours

Environment

Temp: -23 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 2.47 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.52

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 2.05 AU - 2.89 AU

Year: 1648 Days

Day: 24.5 Hours

Environment

Temp: -122 °C

Axial Tilt: 7.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 978.7

Radius: 10

Gravity: 9.79 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 3.28 AU - 3.52 AU

Year: 2662 Days

Day: 10.1 Hours

Environment

Temp: -146 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 52,006,172 km

• M1: 124,316 km (0.095 R)
• M2: 467,344 km (0.105 R)
• M3: 1,036,564 km (0.072 R)
• M4: 1,556,865 km (0.075 R)
• M5: 1,878,351 km (0.094 R)
• M6: 2,272,691 km (0.033 R)
• M7: 2,643,095 km (0.114 R)
• M8: 3,564,468 km (0.057 R)
• M9: 5,068,376 km (0.05 R)
• M10: 5,893,558 km (0.095 R)
• M11: 7,422,298 km (0.115 R)
• M12: 8,008,572 km (0.051 R)
• M13: 8,981,407 km (0.094 R)
• M14: 10,829,839 km (0.102 R)
• M15: 11,843,364 km (0.055 R)
• M16: 13,150,999 km (0.046 R)
• M17: 13,671,450 km (0.082 R)
• M18: 15,315,381 km (0.068 R)
• M19: 15,732,909 km (0.112 R)
• M20: 16,051,104 km (0.067 R)
• M21: 16,755,261 km (0.114 R)
• M22: 17,087,069 km (0.102 R)
• M23: 18,225,209 km (0.067 R)
• M24: 19,413,016 km (0.119 R)
• M25: 20,462,745 km (0.084 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.8

Radius: 9.7

Gravity: 8.81 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 3.14 AU - 3.86 AU

Year: 2780 Days

Day: 8.4 Hours

Environment

Temp: -153 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 52,006,172 km

• M1: 120,725 km (0.115 R)
• M2: 500,854 km (0.108 R)
• M3: 863,329 km (0.058 R)
• M4: 1,495,081 km (0.079 R)
• M5: 2,439,492 km (0.111 R)
• M6: 2,841,462 km (0.087 R)
• M7: 3,415,319 km (0.111 R)
• M8: 3,819,533 km (0.099 R)
• M9: 4,701,263 km (0.085 R)
• M10: 5,453,890 km (0.119 R)
• M11: 7,415,566 km (0.091 R)
• M12: 7,766,822 km (0.039 R)
• M13: 9,031,223 km (0.079 R)
• M14: 9,921,630 km (0.047 R)
• M15: 10,667,226 km (0.115 R)
• M16: 11,115,720 km (0.097 R)
• M17: 11,876,575 km (0.101 R)
• M18: 13,314,659 km (0.071 R)
• M19: 15,067,348 km (0.12 R)
• M20: 16,913,984 km (0.093 R)
• M21: 17,412,145 km (0.096 R)
• M22: 18,729,953 km (0.114 R)
• M23: 19,867,794 km (0.12 R)
• M24: 20,422,503 km (0.096 R)
• M25: 21,114,692 km (0.068 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 132.9

Radius: 13.3

Gravity: 0.75 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 4.1 AU - 6.04 AU

Year: 4847 Days

Day: 14.2 Hours

Environment

Temp: -170 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,006,172 km

• M1: 165,455 km (0.098 R)
• M2: 660,923 km (0.037 R)
• M3: 1,125,574 km (0.062 R)
• M4: 1,542,055 km (0.061 R)
• M5: 3,289,208 km (0.052 R)
• M6: 3,901,961 km (0.089 R)
• M7: 4,843,829 km (0.109 R)
• M8: 5,615,754 km (0.073 R)
• M9: 7,434,266 km (0.095 R)
• M10: 11,140,404 km (0.034 R)
• M11: 12,281,536 km (0.078 R)
• M12: 12,859,732 km (0.092 R)
• M13: 14,658,198 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760

Radius: 9.9

Gravity: 7.75 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 5.32 AU - 5.5 AU

Year: 5343 Days

Day: 12.6 Hours

Environment

Temp: -167 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 52,006,172 km

• M1: 130,898 km (0.077 R)
• M2: 550,969 km (0.098 R)
• M3: 1,506,750 km (0.07 R)
• M4: 1,881,193 km (0.111 R)
• M5: 3,312,097 km (0.073 R)
• M6: 3,976,012 km (0.073 R)
• M7: 5,051,770 km (0.099 R)
• M8: 8,536,354 km (0.119 R)
• M9: 9,438,578 km (0.075 R)
• M10: 9,869,121 km (0.101 R)
• M11: 12,424,702 km (0.068 R)
• M12: 13,153,243 km (0.081 R)
• M13: 17,166,356 km (0.118 R)
• M14: 21,262,944 km (0.113 R)
• M15: 21,779,804 km (0.115 R)
• M16: 32,575,385 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 840.9

Radius: 12

Gravity: 5.84 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 5.07 AU - 7.31 AU

Year: 6539 Days

Day: 6.8 Hours

Environment

Temp: -176 °C

Axial Tilt: 81.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 52,006,172 km

• M1: 149,299 km (0.051 R)
• M2: 565,031 km (0.088 R)
• M3: 1,319,004 km (0.081 R)
• M4: 1,744,610 km (0.082 R)
• M5: 2,577,422 km (0.096 R)
• M6: 3,659,014 km (0.074 R)
• M7: 4,877,639 km (0.054 R)
• M8: 5,318,803 km (0.107 R)
• M9: 6,047,195 km (0.095 R)
• M10: 6,522,467 km (0.065 R)
• M11: 9,021,350 km (0.096 R)
• M12: 9,417,934 km (0.116 R)
• M13: 15,256,290 km (0.118 R)
• M14: 16,463,395 km (0.118 R)
• M15: 18,709,906 km (0.067 R)
• M16: 19,943,640 km (0.096 R)
• M17: 22,331,970 km (0.071 R)
• M18: 23,305,703 km (0.102 R)
• M19: 24,138,664 km (0.098 R)
• M20: 26,937,640 km (0.034 R)
• M21: 28,415,218 km (0.058 R)
• M22: 29,752,025 km (0.101 R)
• M23: 30,141,428 km (0.076 R)
• M24: 30,534,421 km (0.1 R)
• M25: 38,205,202 km (0.094 R)

Planet 8 - Gas Giant

Semi-Major Axis: 6.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 431.1

Radius: 8.6

Gravity: 5.83 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 6.45 AU - 6.97 AU

Year: 7380 Days

Day: 14.2 Hours

Environment

Temp: -191 °C

Axial Tilt: 41.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 52,006,172 km

• M1: 107,112 km (0.096 R)
• M2: 848,818 km (0.095 R)
• M3: 1,330,673 km (0.09 R)
• M4: 1,746,406 km (0.066 R)
• M5: 2,747,066 km (0.03 R)
• M6: 3,945,345 km (0.104 R)
• M7: 7,150,629 km (0.119 R)
• M8: 8,114,936 km (0.085 R)
• M9: 9,038,105 km (0.092 R)
• M10: 9,589,972 km (0.118 R)
• M11: 10,714,199 km (0.083 R)
• M12: 11,527,264 km (0.093 R)
• M13: 17,746,347 km (0.111 R)
• M14: 19,020,172 km (0.118 R)
• M15: 22,894,458 km (0.116 R)
• M16: 33,345,365 km (0.079 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 665.7

Radius: 11.2

Gravity: 5.31 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 8.78 AU - 9.23 AU

Year: 11464 Days

Day: 9.6 Hours

Environment

Temp: -185 °C

Axial Tilt: 42.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 52,006,172 km

• M1: 154,235 km (0.098 R)
• M2: 911,350 km (0.109 R)
• M3: 1,378,245 km (0.071 R)
• M4: 2,232,299 km (0.112 R)
• M5: 7,223,782 km (0.104 R)
• M6: 8,397,527 km (0.112 R)
• M7: 9,999,720 km (0.118 R)
• M8: 11,624,951 km (0.104 R)
• M9: 13,799,656 km (0.091 R)
• M10: 14,714,447 km (0.082 R)
• M11: 15,392,275 km (0.1 R)
• M12: 21,499,608 km (0.065 R)
• M13: 28,632,584 km (0.106 R)
• M14: 39,353,665 km (0.083 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 479 - 18,533 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit