🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.34

Radius: 1.12

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.56 AU - 0.7 AU

Year: 318 Days

Day: 17.5 Hours

Environment

Temp: -139 °C

Axial Tilt: 18 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 981.2

Radius: 9.6

Gravity: 10.65 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.89 AU - 0.91 AU

Year: 543 Days

Day: 12.8 Hours

Environment

Temp: -153 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 37,272,249 km

• M1: 119,379 km (0.096 R)
• M2: 419,173 km (0.061 R)
• M3: 755,918 km (0.099 R)
• M4: 1,191,846 km (0.105 R)
• M5: 1,502,411 km (0.085 R)
• M6: 1,999,525 km (0.093 R)
• M7: 2,690,966 km (0.115 R)
• M8: 3,001,980 km (0.119 R)
• M9: 3,642,409 km (0.067 R)
• M10: 4,113,193 km (0.104 R)
• M11: 4,705,003 km (0.076 R)
• M12: 5,624,282 km (0.074 R)
• M13: 6,294,181 km (0.116 R)
• M14: 7,016,290 km (0.093 R)
• M15: 7,475,406 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 379.3

Radius: 11.2

Gravity: 3.02 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 1.1 AU - 1.68 AU

Year: 1042 Days

Day: 13.4 Hours

Environment

Temp: -173 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 37,272,249 km

• M1: 139,276 km (0.083 R)
• M2: 552,914 km (0.107 R)
• M3: 1,482,216 km (0.083 R)
• M4: 2,616,168 km (0.059 R)
• M5: 4,131,444 km (0.115 R)
• M6: 4,697,074 km (0.101 R)
• M7: 6,454,251 km (0.107 R)
• M8: 6,839,465 km (0.093 R)
• M9: 7,376,970 km (0.106 R)
• M10: 7,727,179 km (0.117 R)
• M11: 8,335,444 km (0.058 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 495

Radius: 9.7

Gravity: 5.26 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 3.05 AU - 3.33 AU

Year: 3623 Days

Day: 12.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 37,272,249 km

• M1: 120,725 km (0.077 R)
• M2: 452,234 km (0.106 R)
• M3: 787,184 km (0.061 R)
• M4: 1,177,634 km (0.063 R)
• M5: 1,696,889 km (0.101 R)
• M6: 3,142,004 km (0.108 R)
• M7: 3,543,525 km (0.114 R)
• M8: 4,472,528 km (0.056 R)
• M9: 5,226,501 km (0.096 R)
• M10: 11,250,358 km (0.108 R)
• M11: 12,415,726 km (0.082 R)
• M12: 14,140,888 km (0.05 R)
• M13: 16,882,569 km (0.113 R)
• M14: 18,758,077 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 859.7

Radius: 12.6

Gravity: 5.42 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 4.54 AU - 6.58 AU

Year: 8336 Days

Day: 12 Hours

Environment

Temp: -225 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 37,272,249 km

• M1: 157,975 km (0.101 R)
• M2: 579,393 km (0.107 R)
• M3: 1,281,306 km (0.084 R)
• M4: 1,950,457 km (0.08 R)
• M5: 2,700,690 km (0.071 R)
• M6: 3,395,124 km (0.111 R)
• M7: 3,810,557 km (0.077 R)
• M8: 4,775,014 km (0.119 R)
• M9: 5,235,477 km (0.076 R)
• M10: 5,827,286 km (0.082 R)
• M11: 8,742,649 km (0.101 R)
• M12: 9,153,595 km (0.102 R)
• M13: 9,818,707 km (0.103 R)
• M14: 11,033,591 km (0.06 R)
• M15: 11,953,019 km (0.047 R)
• M16: 15,543,668 km (0.094 R)
• M17: 19,719,991 km (0.073 R)
• M18: 23,174,655 km (0.096 R)
• M19: 34,661,677 km (0.088 R)
• M20: 35,118,250 km (0.109 R)
• M21: 37,341,723 km (0.055 R)
• M22: 38,916,091 km (0.087 R)
• M23: 40,408,330 km (0.074 R)
• M24: 43,639,045 km (0.113 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 235.2

Radius: 7.5

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 5.19 AU - 7.73 AU

Year: 10440 Days

Day: 24.2 Hours

Environment

Temp: -214 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 37,272,249 km

• M1: 93,349 km (0.083 R)
• M2: 333,304 km (0.099 R)
• M3: 1,032,674 km (0.068 R)
• M4: 2,059,065 km (0.084 R)
• M5: 3,359,519 km (0.111 R)
• M6: 6,779,776 km (0.088 R)
• M7: 8,463,051 km (0.069 R)
• M8: 9,466,404 km (0.086 R)
• M9: 12,474,667 km (0.069 R)
• M10: 15,274,840 km (0.081 R)
• M11: 16,440,656 km (0.117 R)
• M12: 21,548,676 km (0.117 R)
• M13: 22,621,292 km (0.063 R)
• M14: 29,628,008 km (0.118 R)
• M15: 31,242,169 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 197.4

Radius: 6

Gravity: 5.48 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 6.97 AU - 7.81 AU

Year: 12773 Days

Day: 16 Hours

Environment

Temp: -225 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 37,272,249 km

• M1: 74,649 km (0.062 R)
• M2: 273,914 km (0.081 R)
• M3: 798,703 km (0.08 R)
• M4: 1,316,461 km (0.114 R)
• M5: 2,714,154 km (0.086 R)
• M6: 2,991,060 km (0.067 R)
• M7: 5,899,392 km (0.105 R)
• M8: 7,036,186 km (0.068 R)
• M9: 8,230,426 km (0.117 R)
• M10: 9,287,485 km (0.099 R)
• M11: 9,871,515 km (0.068 R)
• M12: 11,212,211 km (0.083 R)
• M13: 11,667,886 km (0.095 R)
• M14: 12,030,661 km (0.074 R)
• M15: 12,778,800 km (0.079 R)
• M16: 17,591,363 km (0.069 R)
• M17: 17,794,816 km (0.052 R)
• M18: 19,551,544 km (0.109 R)
• M19: 20,434,471 km (0.058 R)
• M20: 21,652,796 km (0.089 R)
• M21: 22,438,334 km (0.109 R)
• M22: 23,161,341 km (0.03 R)
• M23: 24,908,793 km (0.117 R)
• M24: 27,646,135 km (0.119 R)
• M25: 30,382,580 km (0.12 R)
• M26: 36,058,173 km (0.091 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 451 - 18,918 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit