🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.38

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 0.51 AU - 0.55 AU

Year: 253 Days

Day: 25.8 Hours

Environment

Temp: -125 °C

Axial Tilt: 28.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 46,668,591 km

• M1: 60,886 km (0.081 R)
• M2: 260,151 km (0.094 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.43

Radius: 1.15

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 0.47 AU - 0.77 AU

Year: 320 Days

Day: 15.3 Hours

Environment

Temp: -122 °C

Axial Tilt: 44.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 732.8

Radius: 10.1

Gravity: 7.18 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.66 AU - 0.92 AU

Year: 461 Days

Day: 14.2 Hours

Environment

Temp: -149 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 46,668,591 km

• M1: 125,662 km (0.064 R)
• M2: 480,658 km (0.061 R)
• M3: 795,711 km (0.099 R)
• M4: 1,130,511 km (0.095 R)
• M5: 1,561,652 km (0.119 R)
• M6: 1,916,798 km (0.097 R)
• M7: 2,597,019 km (0.073 R)
• M8: 3,310,302 km (0.094 R)
• M9: 3,771,811 km (0.115 R)
• M10: 4,163,159 km (0.101 R)
• M11: 4,671,493 km (0.115 R)
• M12: 5,604,834 km (0.042 R)
• M13: 6,025,653 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 149.6

Radius: 14.4

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.09 AU - 1.23 AU

Year: 820 Days

Day: 7.5 Hours

Environment

Temp: -166 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 46,668,591 km

• M1: 179,069 km (0.116 R)
• M2: 1,022,352 km (0.084 R)
• M3: 1,707,211 km (0.103 R)
• M4: 2,937,055 km (0.108 R)
• M5: 3,793,204 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 139.8

Radius: 14.3

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.65 AU - 1.79 AU

Year: 1480 Days

Day: 13.6 Hours

Environment

Temp: -184 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 46,668,591 km

• M1: 178,321 km (0.086 R)
• M2: 761,902 km (0.095 R)
• M3: 1,359,695 km (0.113 R)
• M4: 1,920,986 km (0.04 R)
• M5: 2,416,903 km (0.047 R)
• M6: 3,058,379 km (0.103 R)
• M7: 3,701,201 km (0.045 R)
• M8: 4,218,810 km (0.101 R)
• M9: 4,950,942 km (0.033 R)
• M10: 5,527,342 km (0.094 R)
• M11: 7,287,062 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 832.1

Radius: 13

Gravity: 4.92 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 1.96 AU - 2.24 AU

Year: 1996 Days

Day: 11.5 Hours

Environment

Temp: -185 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 46,668,591 km

• M1: 161,715 km (0.112 R)
• M2: 633,697 km (0.12 R)
• M3: 1,220,270 km (0.077 R)
• M4: 1,728,454 km (0.092 R)
• M5: 2,248,157 km (0.094 R)
• M6: 3,789,164 km (0.1 R)
• M7: 4,489,582 km (0.069 R)
• M8: 4,958,870 km (0.083 R)
• M9: 6,278,174 km (0.103 R)
• M10: 7,034,092 km (0.049 R)
• M11: 7,581,022 km (0.119 R)
• M12: 8,032,658 km (0.118 R)
• M13: 8,598,437 km (0.104 R)
• M14: 9,496,922 km (0.091 R)
• M15: 12,779,249 km (0.096 R)
• M16: 13,949,253 km (0.084 R)
• M17: 15,379,259 km (0.083 R)
• M18: 16,105,258 km (0.114 R)
• M19: 17,262,846 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 52.2

Radius: 14.3

Gravity: 0.26 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 2.09 AU - 2.75 AU

Year: 2470 Days

Day: 5.9 Hours

Environment

Temp: -204 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 46,668,591 km

• M1: 178,021 km (0.098 R)
• M2: 1,536,669 km (0.117 R)
• M3: 1,988,305 km (0.093 R)
• M4: 2,488,411 km (0.113 R)
• M5: 3,012,901 km (0.106 R)
• M6: 4,122,618 km (0.114 R)
• M7: 4,998,065 km (0.086 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 666.6

Radius: 10.4

Gravity: 6.16 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 1.96 AU - 3.02 AU

Year: 2578 Days

Day: 13.7 Hours

Environment

Temp: -193 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 46,668,591 km

• M1: 129,402 km (0.107 R)
• M2: 709,692 km (0.102 R)
• M3: 1,169,556 km (0.057 R)
• M4: 2,634,419 km (0.12 R)
• M5: 3,171,774 km (0.078 R)
• M6: 4,839,491 km (0.102 R)
• M7: 5,185,661 km (0.088 R)
• M8: 5,648,068 km (0.076 R)
• M9: 6,379,452 km (0.053 R)
• M10: 8,126,605 km (0.051 R)
• M11: 13,782,901 km (0.088 R)
• M12: 18,391,113 km (0.034 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 169.2

Radius: 5.7

Gravity: 5.21 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 9.04 AU - 10.04 AU

Year: 19330 Days

Day: 21.8 Hours

Environment

Temp: -239 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 46,668,591 km

• M1: 70,909 km (0.099 R)
• M2: 329,265 km (0.098 R)
• M3: 825,481 km (0.04 R)
• M4: 1,406,070 km (0.038 R)
• M5: 1,626,578 km (0.093 R)
• M6: 1,822,700 km (0.066 R)
• M7: 2,245,015 km (0.065 R)
• M8: 2,709,367 km (0.062 R)
• M9: 3,474,111 km (0.084 R)
• M10: 5,620,392 km (0.088 R)
• M11: 6,510,200 km (0.027 R)
• M12: 8,475,318 km (0.1 R)
• M13: 13,045,832 km (0.105 R)
• M14: 13,651,105 km (0.109 R)
• M15: 14,722,674 km (0.071 R)
• M16: 14,917,451 km (0.06 R)
• M17: 15,312,240 km (0.109 R)
• M18: 15,917,363 km (0.116 R)
• M19: 16,122,462 km (0.093 R)
• M20: 21,344,325 km (0.076 R)
• M21: 22,014,224 km (0.11 R)
• M22: 22,269,139 km (0.053 R)
• M23: 23,132,768 km (0.099 R)
• M24: 23,484,323 km (0.108 R)
• M25: 25,018,748 km (0.098 R)
• M26: 30,967,657 km (0.063 R)
• M27: 33,702,007 km (0.105 R)
• M28: 40,148,927 km (0.088 R)
• M29: 42,336,796 km (0.117 R)
• M30: 45,834,843 km (0.119 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 536 - 14,791 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit