🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.92

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.6 AU - 0.64 AU

Year: 310 Days

Day: 30.7 Hours

Environment

Temp: -126 °C

Axial Tilt: 45.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 44,366,872 km

• M1: 604,824 km (0.115 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 841.7

Radius: 14.5

Gravity: 4 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.68 AU - 0.96 AU

Year: 472 Days

Day: 10.9 Hours

Environment

Temp: -157 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 44,366,872 km

• M1: 180,265 km (0.066 R)
• M2: 692,040 km (0.069 R)
• M3: 1,151,904 km (0.105 R)
• M4: 1,851,274 km (0.117 R)
• M5: 2,616,168 km (0.112 R)
• M6: 3,067,804 km (0.095 R)
• M7: 3,952,525 km (0.117 R)
• M8: 4,582,332 km (0.096 R)
• M9: 6,285,055 km (0.091 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 807.8

Radius: 10.2

Gravity: 7.76 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.71 AU - 1.17 AU

Year: 579 Days

Day: 9 Hours

Environment

Temp: -145 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 44,366,872 km

• M1: 126,859 km (0.108 R)
• M2: 536,009 km (0.084 R)
• M3: 876,494 km (0.099 R)
• M4: 1,199,625 km (0.109 R)
• M5: 1,650,513 km (0.107 R)
• M6: 2,349,435 km (0.071 R)
• M7: 2,695,305 km (0.108 R)
• M8: 4,208,039 km (0.099 R)
• M9: 5,036,960 km (0.114 R)
• M10: 5,490,391 km (0.105 R)
• M11: 5,933,052 km (0.114 R)
• M12: 6,359,555 km (0.065 R)
• M13: 6,932,066 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 921.1

Radius: 14.2

Gravity: 4.57 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 1.47 AU - 1.65 AU

Year: 1239 Days

Day: 9.5 Hours

Environment

Temp: -170 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 44,366,872 km

• M1: 193,430 km (0.105 R)
• M2: 686,355 km (0.05 R)
• M3: 1,207,853 km (0.092 R)
• M4: 1,837,211 km (0.073 R)
• M5: 2,287,950 km (0.095 R)
• M6: 2,813,637 km (0.04 R)
• M7: 3,608,899 km (0.106 R)
• M8: 4,273,114 km (0.084 R)
• M9: 4,878,237 km (0.088 R)
• M10: 5,540,058 km (0.067 R)
• M11: 6,523,514 km (0.113 R)
• M12: 7,172,620 km (0.059 R)
• M13: 7,947,387 km (0.073 R)
• M14: 8,398,275 km (0.101 R)
• M15: 9,475,828 km (0.118 R)
• M16: 9,983,563 km (0.075 R)
• M17: 10,476,040 km (0.116 R)
• M18: 11,053,787 km (0.086 R)
• M19: 12,125,207 km (0.027 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 726

Radius: 13.9

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 2.1 AU - 3.3 AU

Year: 2821 Days

Day: 6 Hours

Environment

Temp: -210 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 44,366,872 km

• M1: 172,935 km (0.076 R)
• M2: 875,447 km (0.035 R)
• M3: 1,409,511 km (0.049 R)
• M4: 1,997,580 km (0.114 R)
• M5: 2,507,410 km (0.11 R)
• M6: 3,036,986 km (0.062 R)
• M7: 3,584,814 km (0.116 R)
• M8: 4,033,607 km (0.111 R)
• M9: 4,881,528 km (0.037 R)
• M10: 5,385,673 km (0.07 R)
• M11: 7,021,376 km (0.047 R)
• M12: 7,540,181 km (0.109 R)
• M13: 8,689,392 km (0.1 R)
• M14: 10,373,565 km (0.087 R)
• M15: 12,093,043 km (0.068 R)
• M16: 13,020,849 km (0.118 R)
• M17: 14,283,006 km (0.072 R)
• M18: 14,770,695 km (0.083 R)
• M19: 16,565,720 km (0.06 R)
• M20: 18,159,835 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 568.2

Radius: 11.2

Gravity: 4.53 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 2.18 AU - 3.3 AU

Year: 2884 Days

Day: 6.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 44,366,872 km

• M1: 139,425 km (0.075 R)
• M2: 906,413 km (0.059 R)
• M3: 1,279,361 km (0.114 R)
• M4: 2,127,282 km (0.116 R)
• M5: 2,638,158 km (0.11 R)
• M6: 3,012,452 km (0.101 R)
• M7: 3,369,094 km (0.098 R)
• M8: 4,313,355 km (0.064 R)
• M9: 4,724,002 km (0.059 R)
• M10: 8,275,455 km (0.119 R)
• M11: 9,726,405 km (0.044 R)
• M12: 10,783,613 km (0.084 R)
• M13: 14,751,397 km (0.1 R)
• M14: 15,637,765 km (0.046 R)
• M15: 16,927,149 km (0.054 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 134.1

Radius: 12.1

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 3.06 AU - 4.6 AU

Year: 4766 Days

Day: 13.2 Hours

Environment

Temp: -210 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 44,366,872 km

• M1: 151,692 km (0.072 R)
• M2: 595,848 km (0.035 R)
• M3: 989,291 km (0.062 R)
• M4: 2,422,738 km (0.099 R)
• M5: 5,326,731 km (0.119 R)
• M6: 6,199,785 km (0.083 R)
• M7: 6,888,084 km (0.108 R)
• M8: 7,393,875 km (0.092 R)
• M9: 9,328,923 km (0.055 R)
• M10: 11,271,751 km (0.084 R)
• M11: 12,095,736 km (0.05 R)
• M12: 13,819,851 km (0.101 R)
• M13: 14,264,007 km (0.109 R)
• M14: 16,333,245 km (0.04 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 586.2

Radius: 4.2

Gravity: 33.23 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 4.76 AU - 7.48 AU

Year: 9626 Days

Day: 23 Hours

Environment

Temp: -218 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 44,366,872 km

• M1: 52,359 km (0.117 R)
• M2: 550,371 km (0.096 R)
• M3: 711,936 km (0.119 R)
• M4: 963,859 km (0.095 R)
• M5: 1,110,764 km (0.1 R)
• M6: 1,490,743 km (0.105 R)
• M7: 1,840,503 km (0.053 R)
• M8: 2,762,624 km (0.05 R)
• M9: 7,425,141 km (0.079 R)
• M10: 7,834,590 km (0.09 R)
• M11: 8,698,518 km (0.115 R)
• M12: 9,865,531 km (0.079 R)
• M13: 10,613,670 km (0.099 R)
• M14: 11,452,615 km (0.117 R)
• M15: 11,888,244 km (0.09 R)
• M16: 12,334,793 km (0.109 R)
• M17: 12,562,332 km (0.062 R)
• M18: 13,440,172 km (0.072 R)
• M19: 14,992,998 km (0.077 R)
• M20: 16,592,648 km (0.034 R)
• M21: 18,009,639 km (0.103 R)
• M22: 18,228,800 km (0.067 R)
• M23: 18,523,956 km (0.103 R)
• M24: 19,736,597 km (0.116 R)
• M25: 21,000,998 km (0.116 R)
• M26: 24,307,560 km (0.054 R)
• M27: 25,390,798 km (0.085 R)
• M28: 27,363,096 km (0.073 R)
• M29: 29,943,659 km (0.059 R)
• M30: 30,251,382 km (0.078 R)
• M31: 30,977,829 km (0.112 R)
• M32: 31,292,733 km (0.106 R)
• M33: 31,609,731 km (0.097 R)
• M34: 32,357,571 km (0.04 R)
• M35: 38,287,032 km (0.107 R)
• M36: 39,627,728 km (0.091 R)
• M37: 42,920,527 km (0.066 R)
• M38: 43,969,208 km (0.099 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: 473 - 10,767 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit