🌌 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: 0.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 446.5

Radius: 11.6

Gravity: 3.32 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.53 AU - 0.59 AU

Year: 284 Days

Day: 6.3 Hours

Environment

Temp: -137 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 25,661,556 km

• M1: 144,362 km (0.093 R)
• M2: 582,684 km (0.074 R)
• M3: 1,028,037 km (0.08 R)
• M4: 1,552,676 km (0.08 R)
• M5: 1,974,542 km (0.049 R)
• M6: 2,481,529 km (0.113 R)
• M7: 2,860,910 km (0.057 R)
• M8: 3,319,128 km (0.055 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 933.9

Radius: 12.5

Gravity: 5.98 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 0.54 AU - 0.72 AU

Year: 339 Days

Day: 12.1 Hours

Environment

Temp: -152 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 25,661,556 km

• M1: 155,432 km (0.048 R)
• M2: 792,270 km (0.098 R)
• M3: 1,427,014 km (0.107 R)
• M4: 2,235,591 km (0.064 R)
• M5: 2,834,580 km (0.072 R)
• M6: 4,221,502 km (0.092 R)
• M7: 4,694,980 km (0.088 R)
• M8: 5,142,128 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 933.2

Radius: 9.9

Gravity: 9.52 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 1.23 AU - 1.57 AU

Year: 1124 Days

Day: 15 Hours

Environment

Temp: -198 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 25,661,556 km

• M1: 123,119 km (0.076 R)
• M2: 453,880 km (0.099 R)
• M3: 955,033 km (0.104 R)
• M4: 1,537,866 km (0.12 R)
• M5: 2,451,760 km (0.097 R)
• M6: 2,958,447 km (0.057 R)
• M7: 3,565,216 km (0.098 R)
• M8: 4,288,672 km (0.116 R)
• M9: 4,771,723 km (0.081 R)
• M10: 5,521,508 km (0.101 R)
• M11: 5,936,044 km (0.117 R)
• M12: 6,347,737 km (0.119 R)
• M13: 8,613,696 km (0.071 R)
• M14: 9,323,388 km (0.036 R)
• M15: 10,071,527 km (0.05 R)
• M16: 10,427,570 km (0.101 R)
• M17: 12,225,886 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 922

Radius: 12.4

Gravity: 6 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 1.27 AU - 1.97 AU

Year: 1399 Days

Day: 10.2 Hours

Environment

Temp: -184 °C

Axial Tilt: 106.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 25,661,556 km

• M1: 154,235 km (0.091 R)
• M2: 806,781 km (0.072 R)
• M3: 1,252,284 km (0.059 R)
• M4: 1,665,772 km (0.117 R)
• M5: 2,069,537 km (0.104 R)
• M6: 2,462,680 km (0.095 R)
• M7: 2,934,811 km (0.116 R)
• M8: 3,564,768 km (0.102 R)
• M9: 4,283,436 km (0.097 R)
• M10: 5,075,557 km (0.094 R)
• M11: 5,663,775 km (0.035 R)
• M12: 6,847,693 km (0.052 R)
• M13: 7,650,136 km (0.12 R)
• M14: 8,395,283 km (0.095 R)
• M15: 8,877,586 km (0.118 R)
• M16: 9,538,659 km (0.1 R)
• M17: 10,402,438 km (0.062 R)
• M18: 10,853,475 km (0.077 R)
• M19: 11,317,528 km (0.112 R)
• M20: 13,307,927 km (0.041 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 875.8

Radius: 13.4

Gravity: 4.88 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 1.38 AU - 2.06 AU

Year: 1530 Days

Day: 5.8 Hours

Environment

Temp: -195 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 25,661,556 km

• M1: 167,849 km (0.086 R)
• M2: 631,004 km (0.084 R)
• M3: 1,087,427 km (0.087 R)
• M4: 2,628,285 km (0.113 R)
• M5: 3,457,656 km (0.116 R)
• M6: 4,435,876 km (0.072 R)
• M7: 5,235,626 km (0.083 R)
• M8: 6,057,367 km (0.078 R)
• M9: 9,140,131 km (0.072 R)
• M10: 9,624,678 km (0.097 R)
• M11: 10,297,719 km (0.116 R)
• M12: 11,439,450 km (0.116 R)
• M13: 14,662,387 km (0.055 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 672

Radius: 11.1

Gravity: 5.45 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 2.48 AU - 2.62 AU

Year: 2762 Days

Day: 14.2 Hours

Environment

Temp: -205 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 25,661,556 km

• M1: 138,228 km (0.097 R)
• M2: 569,070 km (0.096 R)
• M3: 1,043,146 km (0.082 R)
• M4: 1,402,779 km (0.095 R)
• M5: 2,878,113 km (0.107 R)
• M6: 3,385,400 km (0.114 R)
• M7: 5,931,705 km (0.111 R)
• M8: 6,362,697 km (0.116 R)
• M9: 8,979,014 km (0.098 R)
• M10: 9,916,544 km (0.091 R)
• M11: 11,817,185 km (0.032 R)
• M12: 12,414,529 km (0.108 R)
• M13: 13,031,919 km (0.11 R)
• M14: 15,106,243 km (0.076 R)
• M15: 15,505,819 km (0.117 R)
• M16: 15,861,264 km (0.057 R)
• M17: 16,747,182 km (0.027 R)
• M18: 17,175,332 km (0.112 R)
• M19: 18,903,785 km (0.098 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 437.9

Radius: 12.4

Gravity: 2.85 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 3 AU - 3.34 AU

Year: 3828 Days

Day: 5.9 Hours

Environment

Temp: -210 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 25,661,556 km

• M1: 154,235 km (0.104 R)
• M2: 579,692 km (0.105 R)
• M3: 1,041,800 km (0.101 R)
• M4: 1,466,209 km (0.059 R)
• M5: 1,872,816 km (0.075 R)
• M6: 2,441,587 km (0.117 R)
• M7: 3,055,387 km (0.102 R)
• M8: 3,445,688 km (0.119 R)
• M9: 5,820,554 km (0.117 R)
• M10: 6,568,394 km (0.092 R)
• M11: 7,473,311 km (0.081 R)
• M12: 8,913,191 km (0.099 R)
• M13: 10,099,352 km (0.105 R)
• M14: 12,828,915 km (0.046 R)
• M15: 13,664,270 km (0.043 R)
• M16: 17,652,998 km (0.12 R)
• M17: 18,569,883 km (0.047 R)
• M18: 20,004,227 km (0.072 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 78.4

Radius: 7.2

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 5.84 AU - 7.42 AU

Year: 11579 Days

Day: 20.3 Hours

Environment

Temp: -225 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 25,661,556 km

• M1: 115,041 km (0.083 R)
• M2: 376,987 km (0.098 R)
• M3: 650,900 km (0.05 R)
• M4: 991,983 km (0.109 R)
• M5: 1,641,687 km (0.045 R)
• M6: 4,532,516 km (0.09 R)
• M7: 5,261,806 km (0.103 R)
• M8: 5,808,736 km (0.081 R)
• M9: 6,514,239 km (0.064 R)
• M10: 7,079,869 km (0.036 R)
• M11: 8,094,741 km (0.096 R)
• M12: 9,436,783 km (0.056 R)
• M13: 11,270,853 km (0.071 R)
• M14: 16,582,774 km (0.105 R)
• M15: 17,279,601 km (0.117 R)
• M16: 22,432,350 km (0.059 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 479 - 11,119 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit