🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

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: 0.43

Radius: 0.71

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.45 AU - 0.63 AU

Year: 252 Days

Day: 19.3 Hours

Environment

Temp: -125 °C

Axial Tilt: 45.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 56,532,781 km

• M1: 31,416 km (0.112 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.92

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 0.48 AU - 0.62 AU

Year: 259 Days

Day: 34.4 Hours

Environment

Temp: -129 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 56,532,781 km

• M1: 89,908 km (0.105 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 144.8

Radius: 10.1

Gravity: 1.42 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.64 AU - 2.1 AU

Year: 1626 Days

Day: 6.9 Hours

Environment

Temp: -189 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 56,532,781 km

• M1: 169,046 km (0.101 R)
• M2: 578,196 km (0.118 R)
• M3: 1,046,587 km (0.094 R)
• M4: 1,829,283 km (0.045 R)
• M5: 2,271,344 km (0.091 R)
• M6: 4,695,728 km (0.073 R)
• M7: 5,217,824 km (0.082 R)
• M8: 6,909,926 km (0.052 R)
• M9: 7,401,803 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 58

Radius: 12.6

Gravity: 0.37 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.91 AU - 2.45 AU

Year: 2047 Days

Day: 12.8 Hours

Environment

Temp: -200 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,532,781 km

• M1: 156,928 km (0.101 R)
• M2: 817,253 km (0.073 R)
• M3: 1,717,234 km (0.104 R)
• M4: 2,307,996 km (0.116 R)
• M5: 2,793,291 km (0.065 R)
• M6: 3,525,124 km (0.111 R)
• M7: 4,144,011 km (0.087 R)
• M8: 4,802,241 km (0.088 R)
• M9: 6,406,379 km (0.116 R)
• M10: 6,806,853 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 932.8

Radius: 11.7

Gravity: 6.81 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 2.56 AU - 3.34 AU

Year: 3222 Days

Day: 9.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 56,532,781 km

• M1: 145,559 km (0.087 R)
• M2: 515,065 km (0.119 R)
• M3: 974,181 km (0.072 R)
• M4: 1,352,514 km (0.104 R)
• M5: 2,722,681 km (0.106 R)
• M6: 4,388,902 km (0.045 R)
• M7: 6,352,225 km (0.068 R)
• M8: 6,744,470 km (0.047 R)
• M9: 8,088,906 km (0.087 R)
• M10: 8,917,529 km (0.107 R)
• M11: 12,015,701 km (0.112 R)
• M12: 14,596,563 km (0.119 R)
• M13: 16,660,565 km (0.086 R)
• M14: 17,644,321 km (0.097 R)
• M15: 18,483,116 km (0.105 R)
• M16: 19,411,221 km (0.065 R)
• M17: 20,696,566 km (0.081 R)
• M18: 21,226,442 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.6

Radius: 8.8

Gravity: 4.55 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 2.42 AU - 3.6 AU

Year: 3320 Days

Day: 7.9 Hours

Environment

Temp: -210 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 56,532,781 km

• M1: 109,506 km (0.077 R)
• M2: 537,804 km (0.107 R)
• M3: 956,678 km (0.069 R)
• M4: 1,237,922 km (0.055 R)
• M5: 1,669,213 km (0.112 R)
• M6: 2,625,143 km (0.115 R)
• M7: 3,256,596 km (0.066 R)
• M8: 3,908,394 km (0.06 R)
• M9: 5,045,637 km (0.108 R)
• M10: 6,471,005 km (0.078 R)
• M11: 7,000,881 km (0.1 R)
• M12: 7,499,192 km (0.096 R)
• M13: 8,698,817 km (0.075 R)
• M14: 9,484,355 km (0.096 R)
• M15: 11,078,770 km (0.063 R)
• M16: 11,878,221 km (0.082 R)
• M17: 12,502,642 km (0.111 R)
• M18: 12,801,389 km (0.115 R)
• M19: 14,414,054 km (0.115 R)
• M20: 15,709,422 km (0.042 R)
• M21: 16,107,652 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 828.3

Radius: 3

Gravity: 92.03 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 6.09 AU - 9.21 AU

Year: 13453 Days

Day: 22.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 56,532,781 km

• M1: 37,250 km (0.118 R)
• M2: 150,196 km (0.117 R)
• M3: 264,489 km (0.112 R)
• M4: 542,442 km (0.083 R)
• M5: 2,292,737 km (0.118 R)
• M6: 2,503,520 km (0.077 R)
• M7: 6,535,931 km (0.054 R)
• M8: 8,934,733 km (0.094 R)
• M9: 9,401,927 km (0.115 R)
• M10: 11,738,197 km (0.068 R)
• M11: 12,616,935 km (0.058 R)
• M12: 13,204,555 km (0.119 R)
• M13: 13,741,911 km (0.112 R)
• M14: 14,717,139 km (0.114 R)
• M15: 15,221,583 km (0.111 R)
• M16: 15,515,094 km (0.042 R)
• M17: 17,038,898 km (0.115 R)
• M18: 17,196,574 km (0.107 R)
• M19: 17,837,003 km (0.094 R)
• M20: 19,080,311 km (0.068 R)
• M21: 20,736,658 km (0.113 R)
• M22: 21,097,040 km (0.108 R)
• M23: 21,830,668 km (0.077 R)
• M24: 22,203,615 km (0.051 R)
• M25: 24,331,794 km (0.07 R)
• M26: 25,138,127 km (0.085 R)
• M27: 34,079,293 km (0.053 R)
• M28: 34,707,454 km (0.099 R)
• M29: 34,960,723 km (0.085 R)
• M30: 61,119,556 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 592.6

Radius: 7.1

Gravity: 11.76 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 7.29 AU - 8.25 AU

Year: 13771 Days

Day: 21.2 Hours

Environment

Temp: -227 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 56,532,781 km

• M1: 88,412 km (0.118 R)
• M2: 360,680 km (0.101 R)
• M3: 610,958 km (0.109 R)
• M4: 1,002,306 km (0.119 R)
• M5: 1,422,676 km (0.095 R)
• M6: 1,689,708 km (0.083 R)
• M7: 3,210,071 km (0.115 R)
• M8: 3,837,933 km (0.074 R)
• M9: 4,181,111 km (0.113 R)
• M10: 5,405,121 km (0.116 R)
• M11: 7,314,588 km (0.086 R)
• M12: 8,302,682 km (0.088 R)
• M13: 9,075,355 km (0.088 R)
• M14: 10,818,918 km (0.092 R)
• M15: 13,090,113 km (0.082 R)
• M16: 15,234,449 km (0.093 R)
• M17: 17,140,774 km (0.105 R)
• M18: 17,524,942 km (0.096 R)
• M19: 20,035,344 km (0.109 R)
• M20: 22,046,089 km (0.107 R)
• M21: 24,380,264 km (0.086 R)
• M22: 24,670,933 km (0.118 R)
• M23: 26,668,663 km (0.115 R)
• M24: 29,753,072 km (0.096 R)
• M25: 30,196,480 km (0.112 R)
• M26: 32,596,329 km (0.075 R)
• M27: 33,543,134 km (0.074 R)
• M28: 38,553,615 km (0.045 R)
• M29: 39,478,878 km (0.092 R)
• M30: 44,472,305 km (0.071 R)
• M31: 49,405,146 km (0.099 R)
• M32: 50,026,725 km (0.12 R)
• M33: 51,285,591 km (0.07 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 382 - 19,636 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit