🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 690.5

Radius: 8.7

Gravity: 9.12 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.42 AU - 0.62 AU

Year: 254 Days

Day: 7.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 43,261,774 km

• M1: 108,159 km (0.09 R)
• M2: 395,387 km (0.087 R)
• M3: 767,138 km (0.056 R)
• M4: 1,063,641 km (0.09 R)
• M5: 1,375,552 km (0.119 R)
• M6: 1,742,067 km (0.083 R)
• M7: 2,212,104 km (0.105 R)
• M8: 2,647,284 km (0.117 R)
• M9: 2,962,038 km (0.093 R)
• M10: 3,250,313 km (0.064 R)
• M11: 3,634,181 km (0.103 R)
• M12: 4,144,310 km (0.114 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 986.1

Radius: 14.7

Gravity: 4.56 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.41 AU - 0.65 AU

Year: 262 Days

Day: 5.4 Hours

Environment

Temp: -143 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 43,261,774 km

• M1: 182,809 km (0.065 R)
• M2: 650,003 km (0.031 R)
• M3: 1,335,460 km (0.082 R)
• M4: 1,873,863 km (0.119 R)
• M5: 2,684,683 km (0.052 R)
• M6: 3,417,115 km (0.034 R)
• M7: 4,005,633 km (0.051 R)
• M8: 4,607,465 km (0.042 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 464.5

Radius: 13.5

Gravity: 2.55 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.58 AU - 0.84 AU

Year: 406 Days

Day: 5.4 Hours

Environment

Temp: -150 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 43,261,774 km

• M1: 167,849 km (0.075 R)
• M2: 614,548 km (0.113 R)
• M3: 1,115,103 km (0.06 R)
• M4: 1,746,256 km (0.099 R)
• M5: 2,318,917 km (0.112 R)
• M6: 3,909,292 km (0.06 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 577.8

Radius: 9.6

Gravity: 6.27 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.74 AU - 0.86 AU

Year: 485 Days

Day: 7.8 Hours

Environment

Temp: -156 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 43,261,774 km

• M1: 119,379 km (0.084 R)
• M2: 423,512 km (0.117 R)
• M3: 818,600 km (0.114 R)
• M4: 1,265,897 km (0.096 R)
• M5: 1,638,845 km (0.049 R)
• M6: 2,076,568 km (0.106 R)
• M7: 2,426,477 km (0.096 R)
• M8: 2,743,027 km (0.093 R)
• M9: 3,607,702 km (0.115 R)
• M10: 4,076,243 km (0.108 R)
• M11: 5,279,907 km (0.11 R)
• M12: 5,644,477 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 196.9

Radius: 9.5

Gravity: 2.18 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1.3 AU - 1.58 AU

Year: 1172 Days

Day: 9.3 Hours

Environment

Temp: -184 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 43,261,774 km

• M1: 193,280 km (0.117 R)
• M2: 508,334 km (0.069 R)
• M3: 937,829 km (0.083 R)
• M4: 1,298,958 km (0.1 R)
• M5: 1,737,130 km (0.069 R)
• M6: 2,036,775 km (0.102 R)
• M7: 2,361,253 km (0.071 R)
• M8: 2,901,750 km (0.046 R)
• M9: 5,200,471 km (0.08 R)
• M10: 6,292,834 km (0.06 R)
• M11: 6,945,829 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723.1

Radius: 8.2

Gravity: 10.75 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 2.44 AU - 2.68 AU

Year: 2778 Days

Day: 12.2 Hours

Environment

Temp: -207 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 43,261,774 km

• M1: 102,026 km (0.112 R)
• M2: 570,566 km (0.092 R)
• M3: 872,455 km (0.071 R)
• M4: 1,644,978 km (0.117 R)
• M5: 2,011,493 km (0.111 R)
• M6: 2,403,140 km (0.082 R)
• M7: 3,304,019 km (0.065 R)
• M8: 4,841,735 km (0.087 R)
• M9: 5,198,825 km (0.119 R)
• M10: 6,155,504 km (0.04 R)
• M11: 6,806,554 km (0.118 R)
• M12: 8,651,993 km (0.076 R)
• M13: 9,876,900 km (0.072 R)
• M14: 10,335,567 km (0.095 R)
• M15: 13,671,301 km (0.096 R)
• M16: 17,552,019 km (0.114 R)

Planet 7 - Ice Giant

Semi-Major Axis: 5.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 315

Radius: 7.4

Gravity: 5.75 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 5.63 AU - 5.95 AU

Year: 9450 Days

Day: 23.5 Hours

Environment

Temp: -232 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 43,261,774 km

• M1: 97,987 km (0.106 R)
• M2: 359,633 km (0.104 R)
• M3: 1,192,145 km (0.094 R)
• M4: 1,681,779 km (0.069 R)
• M5: 2,937,055 km (0.084 R)
• M6: 3,202,292 km (0.079 R)
• M7: 4,021,939 km (0.039 R)
• M8: 4,350,007 km (0.114 R)
• M9: 5,971,947 km (0.117 R)
• M10: 7,502,034 km (0.114 R)
• M11: 9,450,995 km (0.087 R)
• M12: 10,827,595 km (0.071 R)
• M13: 11,563,766 km (0.093 R)
• M14: 13,859,046 km (0.074 R)
• M15: 14,144,179 km (0.09 R)
• M16: 15,629,537 km (0.11 R)
• M17: 18,354,312 km (0.103 R)
• M18: 18,698,387 km (0.071 R)
• M19: 25,824,781 km (0.107 R)
• M20: 34,991,241 km (0.083 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 186.7

Radius: 4.9

Gravity: 7.78 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 7.18 AU - 9.56 AU

Year: 16424 Days

Day: 17.5 Hours

Environment

Temp: -225 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 43,261,774 km

• M1: 60,886 km (0.12 R)
• M2: 265,835 km (0.113 R)
• M3: 449,691 km (0.091 R)
• M4: 744,100 km (0.093 R)
• M5: 1,050,476 km (0.108 R)
• M6: 1,424,172 km (0.112 R)
• M7: 2,375,764 km (0.076 R)
• M8: 2,805,110 km (0.038 R)
• M9: 3,284,571 km (0.044 R)
• M10: 3,495,653 km (0.117 R)
• M11: 4,404,610 km (0.102 R)
• M12: 4,868,513 km (0.095 R)
• M13: 5,396,444 km (0.073 R)
• M14: 6,065,446 km (0.077 R)
• M15: 6,241,074 km (0.092 R)
• M16: 6,639,303 km (0.116 R)
• M17: 10,914,661 km (0.097 R)
• M18: 12,880,377 km (0.089 R)
• M19: 13,764,799 km (0.108 R)
• M20: 18,505,855 km (0.097 R)
• M21: 20,799,490 km (0.111 R)
• M22: 21,849,667 km (0.116 R)
• M23: 23,190,064 km (0.113 R)
• M24: 23,620,008 km (0.073 R)
• M25: 24,055,188 km (0.078 R)
• M26: 25,757,761 km (0.106 R)
• M27: 27,731,256 km (0.085 R)
• M28: 34,697,880 km (0.044 R)
• M29: 37,452,276 km (0.028 R)
• M30: 39,245,805 km (0.114 R)
• M31: 39,611,272 km (0.112 R)
• M32: 43,003,105 km (0.089 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 209 - 13,822 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit