🌌 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: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.53

Radius: 1.66

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.58 AU - 0.7 AU

Year: 326 Days

Day: 36 Hours

Environment

Temp: -138 °C

Axial Tilt: 7.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 261.2

Radius: 11

Gravity: 2.16 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.74 AU - 0.84 AU

Year: 446 Days

Day: 9.4 Hours

Environment

Temp: -147 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 51,525,289 km

• M1: 136,732 km (0.082 R)
• M2: 502,649 km (0.107 R)
• M3: 865,124 km (0.095 R)
• M4: 1,221,766 km (0.066 R)
• M5: 1,738,327 km (0.12 R)
• M6: 2,170,964 km (0.081 R)
• M7: 2,586,098 km (0.073 R)
• M8: 2,975,651 km (0.111 R)
• M9: 3,611,741 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 741

Radius: 13.7

Gravity: 3.95 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.8 AU - 0.82 AU

Year: 464 Days

Day: 14 Hours

Environment

Temp: -152 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 51,525,289 km

• M1: 170,542 km (0.041 R)
• M2: 599,289 km (0.114 R)
• M3: 1,049,279 km (0.118 R)
• M4: 1,559,109 km (0.033 R)
• M5: 2,173,807 km (0.109 R)
• M6: 2,725,224 km (0.063 R)
• M7: 4,197,118 km (0.091 R)
• M8: 4,750,181 km (0.084 R)
• M9: 5,914,950 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 200

Radius: 8.7

Gravity: 2.64 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.7 AU - 1.12 AU

Year: 552 Days

Day: 10.9 Hours

Environment

Temp: -146 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 51,525,289 km

• M1: 108,159 km (0.091 R)
• M2: 560,842 km (0.05 R)
• M3: 1,000,211 km (0.051 R)
• M4: 1,333,067 km (0.074 R)
• M5: 2,187,420 km (0.044 R)
• M6: 2,766,813 km (0.107 R)
• M7: 3,522,880 km (0.105 R)
• M8: 4,582,781 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 313.5

Radius: 14.6

Gravity: 1.47 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.74 AU - 1.1 AU

Year: 561 Days

Day: 11.7 Hours

Environment

Temp: -156 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 51,525,289 km

• M1: 181,612 km (0.066 R)
• M2: 664,663 km (0.092 R)
• M3: 1,300,454 km (0.107 R)
• M4: 1,870,572 km (0.086 R)
• M5: 2,514,740 km (0.091 R)
• M6: 3,108,793 km (0.051 R)
• M7: 3,722,893 km (0.068 R)
• M8: 4,229,281 km (0.105 R)
• M9: 4,986,396 km (0.057 R)

Planet 6 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 711.8

Radius: 14.3

Gravity: 3.48 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.89 AU - 0.97 AU

Year: 570 Days

Day: 10.1 Hours

Environment

Temp: -161 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 51,525,289 km

• M1: 177,872 km (0.118 R)
• M2: 657,782 km (0.116 R)
• M3: 1,124,826 km (0.12 R)
• M4: 1,575,116 km (0.071 R)
• M5: 2,176,350 km (0.099 R)
• M6: 2,763,521 km (0.081 R)
• M7: 3,245,077 km (0.108 R)
• M8: 3,796,495 km (0.108 R)
• M9: 4,593,103 km (0.078 R)
• M10: 5,056,707 km (0.107 R)
• M11: 5,765,951 km (0.08 R)
• M12: 6,384,239 km (0.079 R)
• M13: 7,108,891 km (0.074 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 834.5

Radius: 10.2

Gravity: 8.02 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 1.54 AU - 1.84 AU

Year: 1397 Days

Day: 7.3 Hours

Environment

Temp: -186 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 51,525,289 km

• M1: 126,859 km (0.077 R)
• M2: 452,982 km (0.091 R)
• M3: 790,924 km (0.03 R)
• M4: 1,526,646 km (0.044 R)
• M5: 2,374,118 km (0.061 R)
• M6: 2,695,903 km (0.111 R)
• M7: 3,076,480 km (0.088 R)
• M8: 4,289,270 km (0.118 R)
• M9: 5,504,753 km (0.08 R)
• M10: 6,409,670 km (0.114 R)
• M11: 7,464,784 km (0.092 R)
• M12: 7,991,369 km (0.109 R)
• M13: 8,542,637 km (0.101 R)
• M14: 9,181,121 km (0.118 R)
• M15: 9,753,482 km (0.078 R)
• M16: 10,114,910 km (0.106 R)
• M17: 10,519,273 km (0.098 R)
• M18: 11,110,634 km (0.062 R)
• M19: 11,983,238 km (0.109 R)
• M20: 12,398,073 km (0.119 R)
• M21: 13,097,593 km (0.058 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 69.2

Radius: 9.7

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 2.25 AU - 2.43 AU

Year: 2276 Days

Day: 7.6 Hours

Environment

Temp: -200 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 51,525,289 km

• M1: 120,576 km (0.079 R)
• M2: 426,204 km (0.117 R)
• M3: 966,701 km (0.107 R)
• M4: 1,440,927 km (0.028 R)
• M5: 2,065,797 km (0.066 R)
• M6: 4,495,117 km (0.111 R)
• M7: 5,121,633 km (0.093 R)
• M8: 5,805,145 km (0.12 R)
• M9: 6,824,206 km (0.033 R)
• M10: 8,248,079 km (0.078 R)

Planet 9 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 423.6

Radius: 9.9

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 2.7 AU - 3.18 AU

Year: 3205 Days

Day: 6.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 51,525,289 km

• M1: 123,119 km (0.098 R)
• M2: 522,695 km (0.068 R)
• M3: 2,159,744 km (0.03 R)
• M4: 3,830,753 km (0.089 R)
• M5: 4,630,204 km (0.092 R)
• M6: 5,034,866 km (0.038 R)
• M7: 5,414,396 km (0.059 R)
• M8: 5,762,061 km (0.093 R)
• M9: 6,284,607 km (0.062 R)
• M10: 6,781,720 km (0.077 R)
• M11: 9,962,470 km (0.116 R)
• M12: 11,875,827 km (0.096 R)
• M13: 12,766,533 km (0.113 R)
• M14: 14,585,194 km (0.109 R)
• M15: 16,674,328 km (0.118 R)
• M16: 17,252,823 km (0.059 R)

Planet 10 - Ice Giant

Semi-Major Axis: 6.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 883.1

Radius: 3.7

Gravity: 64.51 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 5.46 AU - 6.94 AU

Year: 9816 Days

Day: 21.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 51,525,289 km

• M1: 46,076 km (0.093 R)
• M2: 161,715 km (0.097 R)
• M3: 308,022 km (0.067 R)
• M4: 522,695 km (0.064 R)
• M5: 1,070,522 km (0.092 R)
• M6: 1,394,701 km (0.1 R)
• M7: 1,685,818 km (0.101 R)
• M8: 2,016,280 km (0.036 R)
• M9: 2,159,894 km (0.105 R)
• M10: 2,549,297 km (0.104 R)
• M11: 2,674,810 km (0.114 R)
• M12: 3,646,149 km (0.091 R)
• M13: 3,942,353 km (0.069 R)
• M14: 4,431,239 km (0.073 R)
• M15: 4,582,482 km (0.119 R)
• M16: 5,424,868 km (0.116 R)
• M17: 5,846,584 km (0.114 R)
• M18: 15,459,893 km (0.087 R)
• M19: 20,991,274 km (0.076 R)
• M20: 23,548,051 km (0.087 R)
• M21: 26,601,643 km (0.087 R)
• M22: 29,694,429 km (0.088 R)
• M23: 40,394,267 km (0.07 R)
• M24: 43,214,636 km (0.089 R)
• M25: 48,201,930 km (0.06 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: 299 - 13,525 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit