🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.3

Radius: 1.4

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.5 AU - 0.52 AU

Year: 235 Days

Day: 46.1 Hours

Environment

Temp: -107 °C

Axial Tilt: 18.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 277.1

Radius: 10.1

Gravity: 2.72 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.84 AU - 0.86 AU

Year: 506 Days

Day: 5.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 60,805,136 km

• M1: 125,662 km (0.114 R)
• M2: 483,201 km (0.1 R)
• M3: 1,052,122 km (0.113 R)
• M4: 1,405,023 km (0.117 R)
• M5: 2,032,137 km (0.058 R)
• M6: 2,393,416 km (0.064 R)
• M7: 2,826,801 km (0.105 R)
• M8: 4,737,166 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 569.2

Radius: 14.8

Gravity: 2.6 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 1.06 AU - 1.16 AU

Year: 755 Days

Day: 13.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 60,805,136 km

• M1: 185,501 km (0.051 R)
• M2: 762,650 km (0.105 R)
• M3: 1,239,867 km (0.096 R)
• M4: 1,891,665 km (0.117 R)
• M5: 2,476,593 km (0.102 R)
• M6: 3,095,778 km (0.064 R)
• M7: 4,730,883 km (0.046 R)
• M8: 5,804,846 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 739.7

Radius: 8.5

Gravity: 10.24 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 2.33 AU - 3.25 AU

Year: 3009 Days

Day: 13.8 Hours

Environment

Temp: -202 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 60,805,136 km

• M1: 106,364 km (0.056 R)
• M2: 846,275 km (0.093 R)
• M3: 1,200,972 km (0.086 R)
• M4: 2,738,987 km (0.067 R)
• M5: 3,160,255 km (0.093 R)
• M6: 4,006,530 km (0.105 R)
• M7: 4,482,850 km (0.086 R)
• M8: 4,900,228 km (0.075 R)
• M9: 5,496,824 km (0.092 R)
• M10: 5,785,997 km (0.027 R)
• M11: 6,804,459 km (0.037 R)
• M12: 7,231,262 km (0.064 R)
• M13: 9,266,092 km (0.077 R)
• M14: 10,295,774 km (0.096 R)
• M15: 10,574,774 km (0.101 R)
• M16: 11,958,555 km (0.098 R)
• M17: 12,490,674 km (0.119 R)
• M18: 13,412,197 km (0.109 R)
• M19: 13,938,034 km (0.077 R)
• M20: 15,338,569 km (0.114 R)
• M21: 15,913,623 km (0.105 R)
• M22: 16,394,879 km (0.116 R)
• M23: 16,775,756 km (0.113 R)
• M24: 18,947,468 km (0.096 R)
• M25: 20,411,881 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.6

Radius: 10.2

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 2.5 AU - 3.12 AU

Year: 3041 Days

Day: 11.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 60,805,136 km

• M1: 126,859 km (0.032 R)
• M2: 630,555 km (0.047 R)
• M3: 1,204,562 km (0.03 R)
• M4: 2,279,722 km (0.057 R)
• M5: 2,639,206 km (0.101 R)
• M6: 3,220,992 km (0.087 R)
• M7: 3,597,380 km (0.046 R)
• M8: 3,952,825 km (0.062 R)
• M9: 4,965,153 km (0.088 R)
• M10: 5,407,065 km (0.109 R)
• M11: 5,875,307 km (0.056 R)
• M12: 6,747,612 km (0.116 R)
• M13: 8,521,095 km (0.061 R)
• M14: 9,009,083 km (0.114 R)
• M15: 9,334,758 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 500.5

Radius: 9.7

Gravity: 5.32 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 3.12 AU - 3.56 AU

Year: 3941 Days

Day: 8.6 Hours

Environment

Temp: -211 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 60,805,136 km

• M1: 120,875 km (0.108 R)
• M2: 595,549 km (0.065 R)
• M3: 957,875 km (0.116 R)
• M4: 1,458,729 km (0.098 R)
• M5: 1,868,029 km (0.085 R)
• M6: 2,196,546 km (0.111 R)
• M7: 2,579,366 km (0.107 R)
• M8: 3,715,712 km (0.097 R)
• M9: 4,862,230 km (0.05 R)
• M10: 5,976,285 km (0.12 R)
• M11: 6,344,595 km (0.097 R)
• M12: 6,879,408 km (0.091 R)
• M13: 8,418,620 km (0.081 R)
• M14: 8,882,224 km (0.115 R)
• M15: 9,590,271 km (0.063 R)
• M16: 9,977,729 km (0.092 R)
• M17: 13,178,824 km (0.099 R)
• M18: 16,123,359 km (0.117 R)
• M19: 16,839,036 km (0.078 R)
• M20: 17,864,679 km (0.111 R)
• M21: 18,810,735 km (0.102 R)
• M22: 19,296,181 km (0.115 R)
• M23: 20,228,923 km (0.095 R)
• M24: 20,610,248 km (0.108 R)
• M25: 21,983,108 km (0.046 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 224.1

Radius: 6.6

Gravity: 5.14 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 5.93 AU - 8.49 AU

Year: 12500 Days

Day: 18.8 Hours

Environment

Temp: -232 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 60,805,136 km

• M1: 82,129 km (0.078 R)
• M2: 456,872 km (0.042 R)
• M3: 754,272 km (0.081 R)
• M4: 1,083,986 km (0.061 R)
• M5: 1,545,795 km (0.102 R)
• M6: 3,452,270 km (0.076 R)
• M7: 4,364,667 km (0.04 R)
• M8: 6,272,938 km (0.087 R)
• M9: 6,834,379 km (0.09 R)
• M10: 7,277,039 km (0.082 R)
• M11: 10,296,672 km (0.098 R)
• M12: 10,878,458 km (0.093 R)
• M13: 11,739,693 km (0.114 R)
• M14: 12,320,731 km (0.098 R)
• M15: 18,230,894 km (0.085 R)
• M16: 19,958,301 km (0.078 R)
• M17: 20,406,646 km (0.099 R)
• M18: 22,187,608 km (0.072 R)
• M19: 27,316,571 km (0.107 R)
• M20: 32,871,589 km (0.115 R)
• M21: 33,079,231 km (0.116 R)
• M22: 38,326,226 km (0.059 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 603.9

Radius: 4.3

Gravity: 32.66 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 6.48 AU - 9.96 AU

Year: 15217 Days

Day: 15.1 Hours

Environment

Temp: -234 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 60,805,136 km

• M1: 54,902 km (0.05 R)
• M2: 223,798 km (0.08 R)
• M3: 682,914 km (0.097 R)
• M4: 1,196,933 km (0.083 R)
• M5: 1,644,978 km (0.077 R)
• M6: 5,776,123 km (0.077 R)
• M7: 8,497,458 km (0.073 R)
• M8: 9,200,718 km (0.065 R)
• M9: 12,153,780 km (0.115 R)
• M10: 12,404,207 km (0.119 R)
• M11: 13,110,309 km (0.059 R)
• M12: 14,956,795 km (0.047 R)
• M13: 20,624,460 km (0.114 R)
• M14: 22,166,664 km (0.089 R)
• M15: 28,005,320 km (0.099 R)
• M16: 31,863,449 km (0.102 R)
• M17: 42,163,711 km (0.077 R)
• M18: 44,489,210 km (0.111 R)
• M19: 52,635,412 km (0.075 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 403 - 15,728 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit