🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.11

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.56 AU - 0.6 AU

Year: 281 Days

Day: 17.9 Hours

Environment

Temp: -132 °C

Axial Tilt: 5.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 430

Radius: 11.2

Gravity: 3.43 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.66 AU - 0.84 AU

Year: 413 Days

Day: 8.1 Hours

Environment

Temp: -140 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 44,841,673 km

• M1: 139,276 km (0.079 R)
• M2: 502,499 km (0.115 R)
• M3: 889,509 km (0.115 R)
• M4: 1,336,208 km (0.083 R)
• M5: 1,954,795 km (0.103 R)
• M6: 2,305,902 km (0.026 R)
• M7: 2,824,258 km (0.116 R)
• M8: 3,180,152 km (0.082 R)
• M9: 3,566,264 km (0.106 R)
• M10: 4,224,045 km (0.11 R)
• M11: 4,860,734 km (0.068 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 238.3

Radius: 13.1

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.9 AU - 1.12 AU

Year: 645 Days

Day: 5.3 Hours

Environment

Temp: -165 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 44,841,673 km

• M1: 162,912 km (0.098 R)
• M2: 629,657 km (0.054 R)
• M3: 1,374,804 km (0.086 R)
• M4: 1,898,696 km (0.108 R)
• M5: 2,347,191 km (0.086 R)
• M6: 2,958,896 km (0.11 R)
• M7: 3,416,815 km (0.032 R)
• M8: 4,062,480 km (0.116 R)
• M9: 4,616,889 km (0.103 R)
• M10: 5,206,155 km (0.072 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 55.1

Radius: 9.9

Gravity: 0.56 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 1.8 AU - 2.74 AU

Year: 2175 Days

Day: 11.3 Hours

Environment

Temp: -185 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 44,841,673 km

• M1: 123,717 km (0.051 R)
• M2: 480,957 km (0.095 R)
• M3: 1,087,876 km (0.093 R)
• M4: 1,649,915 km (0.102 R)
• M5: 2,540,621 km (0.113 R)
• M6: 3,081,118 km (0.038 R)
• M7: 3,469,773 km (0.097 R)
• M8: 4,034,056 km (0.103 R)
• M9: 4,500,502 km (0.082 R)
• M10: 4,869,560 km (0.055 R)
• M11: 6,392,915 km (0.113 R)
• M12: 7,198,949 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 669.9

Radius: 14.3

Gravity: 3.28 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 2.76 AU - 3.68 AU

Year: 3674 Days

Day: 11 Hours

Environment

Temp: -213 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 44,841,673 km

• M1: 181,313 km (0.091 R)
• M2: 698,323 km (0.036 R)
• M3: 1,261,708 km (0.089 R)
• M4: 2,024,508 km (0.072 R)
• M5: 2,505,465 km (0.064 R)
• M6: 3,188,080 km (0.108 R)
• M7: 4,364,518 km (0.093 R)
• M8: 6,149,669 km (0.116 R)
• M9: 6,648,728 km (0.085 R)
• M10: 7,238,592 km (0.093 R)
• M11: 9,296,311 km (0.036 R)
• M12: 10,155,451 km (0.054 R)
• M13: 11,987,427 km (0.103 R)
• M14: 15,004,068 km (0.039 R)
• M15: 15,587,949 km (0.103 R)
• M16: 16,241,990 km (0.095 R)
• M17: 16,744,490 km (0.067 R)
• M18: 18,982,025 km (0.088 R)
• M19: 20,753,713 km (0.118 R)
• M20: 23,401,894 km (0.075 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 276.4

Radius: 9.9

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 5.26 AU - 5.96 AU

Year: 8448 Days

Day: 8.9 Hours

Environment

Temp: -226 °C

Axial Tilt: 20.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 44,841,673 km

• M1: 131,048 km (0.032 R)
• M2: 458,817 km (0.108 R)
• M3: 916,287 km (0.109 R)
• M4: 1,329,925 km (0.082 R)
• M5: 1,694,495 km (0.071 R)
• M6: 2,312,185 km (0.054 R)
• M7: 3,502,385 km (0.074 R)
• M8: 4,305,726 km (0.11 R)
• M9: 5,060,597 km (0.088 R)
• M10: 8,120,621 km (0.097 R)
• M11: 10,346,937 km (0.103 R)
• M12: 10,984,822 km (0.084 R)
• M13: 12,439,811 km (0.087 R)
• M14: 12,900,423 km (0.063 R)
• M15: 13,693,142 km (0.051 R)
• M16: 15,551,447 km (0.073 R)
• M17: 20,743,690 km (0.08 R)
• M18: 22,127,619 km (0.094 R)
• M19: 27,071,979 km (0.11 R)
• M20: 27,932,914 km (0.064 R)
• M21: 28,282,375 km (0.091 R)
• M22: 29,618,733 km (0.115 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 866

Radius: 4.3

Gravity: 46.84 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 6.7 AU - 9.6 AU

Year: 14793 Days

Day: 16 Hours

Environment

Temp: -224 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 44,841,673 km

• M1: 53,706 km (0.082 R)
• M2: 445,652 km (0.082 R)
• M3: 615,894 km (0.065 R)
• M4: 893,099 km (0.083 R)
• M5: 1,693,298 km (0.117 R)
• M6: 1,868,926 km (0.114 R)
• M7: 2,075,970 km (0.097 R)
• M8: 2,236,189 km (0.11 R)
• M9: 2,513,992 km (0.085 R)
• M10: 2,790,599 km (0.049 R)
• M11: 3,459,301 km (0.081 R)
• M12: 5,214,982 km (0.074 R)
• M13: 5,938,587 km (0.084 R)
• M14: 6,221,476 km (0.07 R)
• M15: 6,640,799 km (0.074 R)
• M16: 9,782,953 km (0.117 R)
• M17: 11,301,222 km (0.091 R)
• M18: 12,374,736 km (0.116 R)
• M19: 12,969,836 km (0.108 R)
• M20: 14,074,317 km (0.079 R)
• M21: 15,846,454 km (0.069 R)
• M22: 19,737,494 km (0.068 R)
• M23: 21,195,026 km (0.11 R)
• M24: 21,759,609 km (0.098 R)
• M25: 22,430,854 km (0.112 R)
• M26: 28,990,272 km (0.108 R)
• M27: 30,392,154 km (0.115 R)
• M28: 32,952,970 km (0.105 R)
• M29: 37,945,799 km (0.051 R)
• M30: 42,226,243 km (0.114 R)
• M31: 44,482,328 km (0.068 R)
• M32: 50,721,607 km (0.062 R)
• M33: 53,268,660 km (0.12 R)
• M34: 57,701,096 km (0.044 R)
• M35: 61,990,366 km (0.111 R)
• M36: 63,919,729 km (0.102 R)
• M37: 65,293,786 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 131.5

Radius: 5

Gravity: 5.26 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 7.68 AU - 12.68 AU

Year: 20652 Days

Day: 24.2 Hours

Environment

Temp: -229 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 44,841,673 km

• M1: 62,831 km (0.111 R)
• M2: 225,743 km (0.101 R)
• M3: 572,212 km (0.067 R)
• M4: 761,902 km (0.079 R)
• M5: 1,055,712 km (0.12 R)
• M6: 1,345,184 km (0.101 R)
• M7: 1,686,118 km (0.037 R)
• M8: 1,949,410 km (0.11 R)
• M9: 2,186,373 km (0.059 R)
• M10: 2,423,635 km (0.112 R)
• M11: 3,125,848 km (0.08 R)
• M12: 4,336,094 km (0.07 R)
• M13: 6,919,350 km (0.114 R)
• M14: 7,676,166 km (0.093 R)
• M15: 9,352,859 km (0.063 R)
• M16: 9,638,142 km (0.105 R)
• M17: 14,142,235 km (0.05 R)
• M18: 14,900,995 km (0.088 R)
• M19: 23,596,371 km (0.052 R)
• M20: 23,771,850 km (0.08 R)
• M21: 28,346,253 km (0.116 R)
• M22: 28,843,517 km (0.119 R)
• M23: 33,033,903 km (0.114 R)
• M24: 36,430,522 km (0.078 R)
• M25: 41,184,593 km (0.103 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: 385 - 18,560 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit