🌌 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: 4.3

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.6 AU - 0.64 AU

Year: 310 Days

Day: 45.6 Hours

Environment

Temp: -135 °C

Axial Tilt: 14.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 55,068,265 km

• M1: 378,782 km (0.118 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 432

Radius: 9.8

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.65 AU - 1.03 AU

Year: 489 Days

Day: 14.6 Hours

Environment

Temp: -152 °C

Axial Tilt: 19.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 55,068,265 km

• M1: 122,221 km (0.054 R)
• M2: 445,802 km (0.109 R)
• M3: 778,208 km (0.116 R)
• M4: 1,139,038 km (0.06 R)
• M5: 1,505,553 km (0.096 R)
• M6: 1,843,046 km (0.113 R)
• M7: 2,427,525 km (0.087 R)
• M8: 3,390,187 km (0.109 R)
• M9: 3,700,453 km (0.069 R)
• M10: 4,337,441 km (0.083 R)
• M11: 5,015,568 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 830.9

Radius: 10.8

Gravity: 7.12 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 1.11 AU - 1.29 AU

Year: 836 Days

Day: 5.5 Hours

Environment

Temp: -171 °C

Axial Tilt: 161.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 55,068,265 km

• M1: 134,339 km (0.097 R)
• M2: 530,025 km (0.096 R)
• M3: 1,247,497 km (0.084 R)
• M4: 1,863,391 km (0.111 R)
• M5: 2,354,371 km (0.114 R)
• M6: 3,045,962 km (0.058 R)
• M7: 3,583,767 km (0.098 R)
• M8: 4,055,598 km (0.075 R)
• M9: 4,398,626 km (0.06 R)
• M10: 4,940,470 km (0.084 R)
• M11: 5,806,043 km (0.117 R)
• M12: 6,264,560 km (0.08 R)
• M13: 6,724,574 km (0.105 R)
• M14: 7,517,443 km (0.083 R)
• M15: 8,371,497 km (0.113 R)
• M16: 9,261,006 km (0.068 R)
• M17: 9,743,309 km (0.095 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 84.6

Radius: 10.2

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 2.55 AU - 3.69 AU

Year: 3504 Days

Day: 13.2 Hours

Environment

Temp: -206 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 55,068,265 km

• M1: 127,009 km (0.111 R)
• M2: 781,050 km (0.095 R)
• M3: 1,175,091 km (0.11 R)
• M4: 2,393,267 km (0.116 R)
• M5: 3,594,089 km (0.1 R)
• M6: 5,178,181 km (0.093 R)
• M7: 5,632,809 km (0.097 R)
• M8: 6,789,649 km (0.113 R)
• M9: 7,258,937 km (0.091 R)
• M10: 7,723,439 km (0.084 R)
• M11: 8,855,596 km (0.063 R)
• M12: 9,386,219 km (0.057 R)
• M13: 10,641,645 km (0.09 R)
• M14: 11,241,682 km (0.066 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 73.6

Radius: 3.3

Gravity: 6.76 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 5.42 AU - 8.24 AU

Year: 11349 Days

Day: 19.1 Hours

Environment

Temp: -228 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 55,068,265 km

• M1: 40,990 km (0.09 R)
• M2: 195,225 km (0.097 R)
• M3: 491,279 km (0.109 R)
• M4: 657,333 km (0.084 R)
• M5: 1,075,309 km (0.037 R)
• M6: 1,901,239 km (0.076 R)
• M7: 2,266,707 km (0.062 R)
• M8: 7,996,904 km (0.07 R)
• M9: 8,531,118 km (0.082 R)
• M10: 13,293,267 km (0.057 R)
• M11: 15,730,216 km (0.111 R)
• M12: 15,950,424 km (0.086 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 721.7

Radius: 6.6

Gravity: 16.57 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 6.02 AU - 9.32 AU

Year: 13506 Days

Day: 19.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 55,068,265 km

• M1: 82,129 km (0.112 R)
• M2: 401,072 km (0.12 R)
• M3: 698,622 km (0.105 R)
• M4: 1,116,000 km (0.065 R)
• M5: 1,416,692 km (0.101 R)
• M6: 1,754,035 km (0.083 R)
• M7: 2,975,950 km (0.056 R)
• M8: 4,035,552 km (0.07 R)
• M9: 4,813,760 km (0.075 R)
• M10: 5,762,211 km (0.04 R)
• M11: 6,829,592 km (0.12 R)
• M12: 8,942,063 km (0.097 R)
• M13: 9,349,418 km (0.105 R)
• M14: 13,925,168 km (0.111 R)
• M15: 16,576,940 km (0.05 R)
• M16: 18,384,980 km (0.087 R)
• M17: 20,670,387 km (0.1 R)
• M18: 21,653,394 km (0.096 R)
• M19: 22,761,017 km (0.058 R)
• M20: 24,295,891 km (0.077 R)
• M21: 28,870,444 km (0.111 R)
• M22: 33,742,847 km (0.094 R)
• M23: 39,814,277 km (0.052 R)
• M24: 44,047,747 km (0.115 R)
• M25: 45,821,828 km (0.118 R)
• M26: 47,797,118 km (0.111 R)
• M27: 52,899,602 km (0.076 R)
• M28: 57,826,907 km (0.026 R)
• M29: 58,883,218 km (0.055 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 270.5

Radius: 7.3

Gravity: 5.08 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 9.03 AU - 10.63 AU

Year: 19596 Days

Day: 23.6 Hours

Environment

Temp: -226 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 55,068,265 km

• M1: 124,615 km (0.069 R)
• M2: 390,450 km (0.116 R)
• M3: 822,639 km (0.052 R)
• M4: 1,246,599 km (0.039 R)
• M5: 1,473,689 km (0.041 R)
• M6: 1,776,624 km (0.112 R)
• M7: 2,084,497 km (0.094 R)
• M8: 3,302,074 km (0.073 R)
• M9: 5,067,329 km (0.047 R)
• M10: 5,945,618 km (0.115 R)
• M11: 10,059,410 km (0.068 R)
• M12: 11,555,089 km (0.077 R)
• M13: 12,204,942 km (0.061 R)
• M14: 12,447,291 km (0.064 R)
• M15: 14,980,880 km (0.107 R)
• M16: 32,792,601 km (0.091 R)
• M17: 33,497,656 km (0.045 R)
• M18: 35,549,690 km (0.094 R)
• M19: 50,578,292 km (0.101 R)
• M20: 54,574,949 km (0.117 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: 447 - 14,148 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit