🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.44

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.42 AU - 0.66 AU

Year: 260 Days

Day: 40.9 Hours

Environment

Temp: -118 °C

Axial Tilt: 27.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 419.4

Radius: 8.9

Gravity: 5.29 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.63 AU - 0.79 AU

Year: 392 Days

Day: 13.1 Hours

Environment

Temp: -138 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 79,147,474 km

• M1: 110,702 km (0.088 R)
• M2: 708,795 km (0.04 R)
• M3: 1,029,533 km (0.102 R)
• M4: 1,830,928 km (0.116 R)
• M5: 2,141,494 km (0.106 R)
• M6: 2,725,673 km (0.083 R)
• M7: 3,346,355 km (0.12 R)
• M8: 3,814,447 km (0.078 R)
• M9: 4,184,103 km (0.107 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 55.1

Radius: 13.2

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.36 AU - 1.94 AU

Year: 1390 Days

Day: 14.6 Hours

Environment

Temp: -173 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 79,147,474 km

• M1: 164,707 km (0.103 R)
• M2: 749,037 km (0.094 R)
• M3: 1,210,247 km (0.074 R)
• M4: 2,437,697 km (0.116 R)
• M5: 3,212,315 km (0.095 R)
• M6: 4,872,702 km (0.085 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 800.3

Radius: 14.7

Gravity: 3.7 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 1.81 AU - 2.03 AU

Year: 1745 Days

Day: 7.3 Hours

Environment

Temp: -186 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 79,147,474 km

• M1: 182,958 km (0.075 R)
• M2: 997,967 km (0.092 R)
• M3: 1,679,984 km (0.115 R)
• M4: 4,116,634 km (0.106 R)
• M5: 4,932,990 km (0.106 R)
• M6: 7,924,498 km (0.1 R)
• M7: 10,303,703 km (0.043 R)
• M8: 12,516,405 km (0.114 R)
• M9: 13,543,694 km (0.072 R)
• M10: 15,441,343 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 786.9

Radius: 14.6

Gravity: 3.69 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 2.3 AU - 2.8 AU

Year: 2671 Days

Day: 11.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 49.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 79,147,474 km

• M1: 182,509 km (0.072 R)
• M2: 957,576 km (0.11 R)
• M3: 2,507,260 km (0.114 R)
• M4: 3,050,450 km (0.109 R)
• M5: 3,634,331 km (0.066 R)
• M6: 4,399,225 km (0.077 R)
• M7: 4,959,319 km (0.111 R)
• M8: 6,306,448 km (0.105 R)
• M9: 7,917,767 km (0.112 R)
• M10: 9,976,532 km (0.1 R)
• M11: 10,552,634 km (0.092 R)
• M12: 13,173,140 km (0.116 R)
• M13: 15,531,401 km (0.106 R)
• M14: 16,570,507 km (0.057 R)
• M15: 17,107,265 km (0.106 R)
• M16: 18,272,183 km (0.119 R)
• M17: 19,136,260 km (0.084 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 691.3

Radius: 13.4

Gravity: 3.85 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 5.04 AU - 5.78 AU

Year: 8255 Days

Day: 8.1 Hours

Environment

Temp: -221 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 79,147,474 km

• M1: 166,652 km (0.083 R)
• M2: 706,551 km (0.047 R)
• M3: 1,226,703 km (0.1 R)
• M4: 1,823,000 km (0.094 R)
• M5: 2,783,568 km (0.054 R)
• M6: 3,447,633 km (0.099 R)
• M7: 4,058,291 km (0.119 R)
• M8: 5,822,798 km (0.088 R)
• M9: 8,998,910 km (0.097 R)
• M10: 9,921,480 km (0.052 R)
• M11: 10,554,279 km (0.117 R)
• M12: 11,317,827 km (0.12 R)
• M13: 14,313,823 km (0.112 R)
• M14: 14,870,627 km (0.103 R)
• M15: 16,695,721 km (0.089 R)
• M16: 19,033,487 km (0.112 R)
• M17: 21,986,997 km (0.059 R)
• M18: 23,572,884 km (0.096 R)
• M19: 26,784,751 km (0.067 R)
• M20: 30,176,882 km (0.105 R)
• M21: 32,450,022 km (0.118 R)
• M22: 39,106,230 km (0.067 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 513.1

Radius: 3.3

Gravity: 47.12 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 6.32 AU - 10.38 AU

Year: 15828 Days

Day: 15.3 Hours

Environment

Temp: -226 °C

Axial Tilt: 32 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 79,147,474 km

• M1: 41,439 km (0.115 R)
• M2: 316,250 km (0.053 R)
• M3: 542,591 km (0.097 R)
• M4: 817,702 km (0.111 R)
• M5: 1,091,466 km (0.067 R)
• M6: 1,394,402 km (0.101 R)
• M7: 2,985,525 km (0.1 R)
• M8: 4,024,332 km (0.029 R)
• M9: 5,717,182 km (0.117 R)
• M10: 7,077,475 km (0.056 R)
• M11: 8,639,427 km (0.119 R)
• M12: 8,837,195 km (0.089 R)
• M13: 9,292,870 km (0.087 R)
• M14: 9,978,627 km (0.101 R)
• M15: 11,688,530 km (0.085 R)
• M16: 12,299,189 km (0.032 R)
• M17: 14,884,988 km (0.095 R)
• M18: 16,043,025 km (0.105 R)
• M19: 16,873,144 km (0.088 R)
• M20: 20,920,514 km (0.074 R)
• M21: 21,637,387 km (0.106 R)
• M22: 21,819,149 km (0.069 R)
• M23: 29,839,988 km (0.115 R)
• M24: 31,208,061 km (0.063 R)
• M25: 32,856,330 km (0.108 R)
• M26: 36,710,869 km (0.105 R)
• M27: 38,015,661 km (0.112 R)
• M28: 47,564,793 km (0.098 R)
• M29: 51,017,811 km (0.096 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 935.6

Radius: 4.2

Gravity: 53.04 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 7.31 AU - 9.97 AU

Year: 16660 Days

Day: 16.4 Hours

Environment

Temp: -231 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 79,147,474 km

• M1: 66,870 km (0.107 R)
• M2: 205,248 km (0.102 R)
• M3: 400,025 km (0.115 R)
• M4: 556,504 km (0.043 R)
• M5: 743,950 km (0.034 R)
• M6: 949,198 km (0.025 R)
• M7: 1,426,416 km (0.093 R)
• M8: 2,048,743 km (0.112 R)
• M9: 2,616,168 km (0.108 R)
• M10: 2,987,769 km (0.101 R)
• M11: 3,422,051 km (0.104 R)
• M12: 3,595,286 km (0.082 R)
• M13: 3,866,207 km (0.098 R)
• M14: 4,347,763 km (0.106 R)
• M15: 5,313,567 km (0.096 R)
• M16: 5,665,122 km (0.086 R)
• M17: 6,242,570 km (0.102 R)
• M18: 6,678,348 km (0.06 R)
• M19: 7,465,233 km (0.118 R)
• M20: 7,955,914 km (0.029 R)
• M21: 9,165,862 km (0.038 R)
• M22: 9,843,540 km (0.051 R)
• M23: 10,076,613 km (0.025 R)
• M24: 12,343,320 km (0.066 R)
• M25: 18,112,113 km (0.059 R)
• M26: 19,175,904 km (0.1 R)
• M27: 19,815,285 km (0.119 R)
• M28: 23,640,204 km (0.073 R)
• M29: 23,848,593 km (0.11 R)
• M30: 31,687,372 km (0.114 R)
• M31: 32,323,462 km (0.066 R)
• M32: 36,319,670 km (0.085 R)
• M33: 37,297,292 km (0.092 R)
• M34: 39,159,337 km (0.108 R)
• M35: 43,222,565 km (0.099 R)
• M36: 48,391,321 km (0.105 R)
• M37: 48,895,914 km (0.103 R)
• M38: 74,069,795 km (0.059 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 745.3

Radius: 7.4

Gravity: 13.61 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 7.83 AU - 11.91 AU

Year: 20342 Days

Day: 24.3 Hours

Environment

Temp: -234 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 79,147,474 km

• M1: 93,648 km (0.069 R)
• M2: 397,930 km (0.078 R)
• M3: 980,614 km (0.097 R)
• M4: 1,465,461 km (0.117 R)
• M5: 2,756,042 km (0.112 R)
• M6: 3,254,352 km (0.115 R)
• M7: 3,904,804 km (0.071 R)
• M8: 4,854,002 km (0.098 R)
• M9: 6,033,133 km (0.059 R)
• M10: 10,890,276 km (0.105 R)
• M11: 12,749,030 km (0.078 R)
• M12: 18,302,103 km (0.074 R)
• M13: 20,238,498 km (0.12 R)
• M14: 21,206,994 km (0.053 R)
• M15: 22,307,436 km (0.106 R)
• M16: 23,656,659 km (0.101 R)
• M17: 28,867,752 km (0.062 R)
• M18: 32,780,933 km (0.053 R)
• M19: 53,234,851 km (0.09 R)
• M20: 55,823,642 km (0.088 R)
• M21: 57,531,601 km (0.106 R)
• M22: 59,273,968 km (0.106 R)
• M23: 61,451,065 km (0.075 R)
• M24: 67,445,003 km (0.066 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 196 - 10,397 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit