🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.3

Radius: 1.4

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.59 AU - 0.61 AU

Year: 305 Days

Day: 39.7 Hours

Environment

Temp: -122 °C

Axial Tilt: 3.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 28,280,125 km

• M1: 94,695 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 343.9

Radius: 14.8

Gravity: 1.57 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.6 AU - 0.96 AU

Year: 452 Days

Day: 10.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 28,280,125 km

• M1: 184,155 km (0.091 R)
• M2: 660,624 km (0.082 R)
• M3: 1,357,750 km (0.076 R)
• M4: 1,869,225 km (0.106 R)
• M5: 2,398,951 km (0.094 R)
• M6: 4,546,578 km (0.046 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 923.7

Radius: 14.6

Gravity: 4.33 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 1.12 AU - 1.34 AU

Year: 895 Days

Day: 14.5 Hours

Environment

Temp: -159 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 28,280,125 km

• M1: 182,659 km (0.118 R)
• M2: 739,462 km (0.09 R)
• M3: 1,571,077 km (0.102 R)
• M4: 2,442,036 km (0.096 R)
• M5: 3,067,804 km (0.08 R)
• M6: 3,845,862 km (0.089 R)
• M7: 4,539,547 km (0.119 R)
• M8: 5,257,468 km (0.079 R)
• M9: 5,818,759 km (0.092 R)
• M10: 6,735,943 km (0.044 R)
• M11: 7,646,994 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 163.8

Radius: 14.8

Gravity: 0.75 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 1.27 AU - 1.77 AU

Year: 1229 Days

Day: 14.4 Hours

Environment

Temp: -175 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 28,280,125 km

• M1: 184,155 km (0.088 R)
• M2: 933,341 km (0.117 R)
• M3: 1,457,083 km (0.068 R)
• M4: 2,479,136 km (0.113 R)
• M5: 4,167,348 km (0.076 R)
• M6: 4,955,579 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 391

Radius: 8.3

Gravity: 5.68 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.73 AU - 1.79 AU

Year: 1532 Days

Day: 10.9 Hours

Environment

Temp: -175 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 28,280,125 km

• M1: 103,223 km (0.082 R)
• M2: 395,686 km (0.113 R)
• M3: 669,899 km (0.111 R)
• M4: 1,070,672 km (0.06 R)
• M5: 1,358,498 km (0.046 R)
• M6: 1,840,203 km (0.054 R)
• M7: 2,408,077 km (0.113 R)
• M8: 3,603,065 km (0.045 R)
• M9: 4,208,936 km (0.097 R)
• M10: 4,957,524 km (0.116 R)
• M11: 5,643,430 km (0.104 R)
• M12: 7,378,167 km (0.069 R)
• M13: 7,763,681 km (0.074 R)
• M14: 8,244,039 km (0.067 R)
• M15: 8,886,413 km (0.109 R)
• M16: 9,382,479 km (0.079 R)
• M17: 10,525,706 km (0.079 R)
• M18: 11,214,455 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 562.2

Radius: 14

Gravity: 2.87 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 2.75 AU - 2.87 AU

Year: 3090 Days

Day: 9.2 Hours

Environment

Temp: -205 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 28,280,125 km

• M1: 174,730 km (0.065 R)
• M2: 615,745 km (0.075 R)
• M3: 1,334,712 km (0.098 R)
• M4: 1,779,915 km (0.105 R)
• M5: 2,367,536 km (0.118 R)
• M6: 2,808,999 km (0.088 R)
• M7: 6,797,428 km (0.056 R)
• M8: 7,577,132 km (0.072 R)
• M9: 9,423,020 km (0.049 R)
• M10: 11,143,545 km (0.093 R)
• M11: 17,012,719 km (0.105 R)
• M12: 19,848,496 km (0.033 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704.4

Radius: 14.2

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 2.58 AU - 3.18 AU

Year: 3206 Days

Day: 10.2 Hours

Environment

Temp: -193 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 28,280,125 km

• M1: 176,525 km (0.078 R)
• M2: 624,122 km (0.071 R)
• M3: 1,217,128 km (0.072 R)
• M4: 2,040,365 km (0.099 R)
• M5: 3,393,628 km (0.098 R)
• M6: 4,147,003 km (0.115 R)
• M7: 5,588,079 km (0.075 R)
• M8: 6,154,905 km (0.106 R)
• M9: 8,853,052 km (0.112 R)
• M10: 10,644,188 km (0.086 R)
• M11: 11,221,785 km (0.099 R)
• M12: 13,315,557 km (0.084 R)
• M13: 16,029,711 km (0.089 R)
• M14: 17,234,572 km (0.026 R)
• M15: 18,795,028 km (0.115 R)
• M16: 19,824,560 km (0.109 R)
• M17: 20,827,764 km (0.116 R)
• M18: 21,471,633 km (0.04 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 789.2

Radius: 12.5

Gravity: 5.05 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 3.09 AU - 3.83 AU

Year: 4222 Days

Day: 14.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 28,280,125 km

• M1: 160,369 km (0.079 R)
• M2: 605,572 km (0.106 R)
• M3: 1,077,105 km (0.047 R)
• M4: 2,065,647 km (0.039 R)
• M5: 2,875,121 km (0.101 R)
• M6: 3,423,996 km (0.113 R)
• M7: 4,683,161 km (0.07 R)
• M8: 5,094,555 km (0.059 R)
• M9: 5,586,284 km (0.052 R)
• M10: 7,221,538 km (0.062 R)
• M11: 7,808,111 km (0.106 R)
• M12: 8,614,294 km (0.085 R)
• M13: 9,354,504 km (0.103 R)
• M14: 9,885,128 km (0.065 R)
• M15: 11,006,813 km (0.086 R)
• M16: 12,163,504 km (0.114 R)
• M17: 13,095,648 km (0.025 R)
• M18: 14,287,045 km (0.046 R)
• M19: 14,991,651 km (0.094 R)
• M20: 16,529,218 km (0.077 R)
• M21: 18,106,728 km (0.12 R)
• M22: 18,996,835 km (0.071 R)
• M23: 22,198,978 km (0.11 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 518 - 18,014 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit