🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.96

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.55 AU - 0.69 AU

Year: 315 Days

Day: 34.1 Hours

Environment

Temp: -133 °C

Axial Tilt: 35.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 75,361,747 km

• M1: 42,187 km (0.107 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 897.3

Radius: 13.4

Gravity: 5 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.69 AU - 1.07 AU

Year: 533 Days

Day: 14.8 Hours

Environment

Temp: -151 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 75,361,747 km

• M1: 170,841 km (0.111 R)
• M2: 607,367 km (0.026 R)
• M3: 1,297,462 km (0.099 R)
• M4: 1,782,608 km (0.063 R)
• M5: 2,273,289 km (0.095 R)
• M6: 2,820,817 km (0.093 R)
• M7: 3,679,210 km (0.117 R)
• M8: 4,199,661 km (0.094 R)
• M9: 4,997,915 km (0.079 R)
• M10: 5,711,048 km (0.079 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 613.7

Radius: 8.1

Gravity: 9.35 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.87 AU - 1.25 AU

Year: 705 Days

Day: 11.5 Hours

Environment

Temp: -158 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 75,361,747 km

• M1: 121,623 km (0.096 R)
• M2: 838,646 km (0.082 R)
• M3: 1,246,300 km (0.108 R)
• M4: 1,858,604 km (0.119 R)
• M5: 2,208,513 km (0.049 R)
• M6: 3,952,376 km (0.078 R)
• M7: 4,221,353 km (0.082 R)
• M8: 4,502,597 km (0.12 R)
• M9: 4,813,012 km (0.094 R)
• M10: 5,260,908 km (0.107 R)
• M11: 5,717,631 km (0.048 R)
• M12: 6,401,143 km (0.088 R)
• M13: 6,731,156 km (0.062 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 549.7

Radius: 13.8

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 2.27 AU - 3.13 AU

Year: 2865 Days

Day: 7.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 75,361,747 km

• M1: 172,337 km (0.118 R)
• M2: 1,008,290 km (0.118 R)
• M3: 1,696,889 km (0.083 R)
• M4: 2,306,500 km (0.047 R)
• M5: 3,011,555 km (0.102 R)
• M6: 3,522,731 km (0.114 R)
• M7: 3,953,573 km (0.072 R)
• M8: 5,343,486 km (0.074 R)
• M9: 6,177,345 km (0.113 R)
• M10: 7,422,149 km (0.101 R)
• M11: 8,072,451 km (0.071 R)
• M12: 10,067,937 km (0.051 R)
• M13: 11,911,730 km (0.055 R)
• M14: 13,741,761 km (0.075 R)
• M15: 14,676,299 km (0.108 R)
• M16: 15,903,450 km (0.085 R)
• M17: 16,828,564 km (0.079 R)
• M18: 17,465,103 km (0.106 R)
• M19: 18,338,754 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 726

Radius: 11.8

Gravity: 5.21 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 2.68 AU - 3.62 AU

Year: 3610 Days

Day: 6.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 75,361,747 km

• M1: 149,897 km (0.095 R)
• M2: 531,521 km (0.101 R)
• M3: 961,466 km (0.1 R)
• M4: 2,921,946 km (0.098 R)
• M5: 3,751,615 km (0.057 R)
• M6: 4,133,688 km (0.04 R)
• M7: 4,565,428 km (0.114 R)
• M8: 5,600,795 km (0.035 R)
• M9: 6,045,100 km (0.084 R)
• M10: 6,663,987 km (0.086 R)
• M11: 7,067,901 km (0.096 R)
• M12: 9,036,609 km (0.109 R)
• M13: 11,434,812 km (0.103 R)
• M14: 12,106,507 km (0.098 R)
• M15: 12,568,914 km (0.114 R)
• M16: 13,139,181 km (0.077 R)
• M17: 13,578,251 km (0.118 R)
• M18: 14,588,934 km (0.102 R)
• M19: 15,703,438 km (0.114 R)
• M20: 19,450,865 km (0.116 R)
• M21: 19,893,824 km (0.079 R)
• M22: 21,733,728 km (0.095 R)
• M23: 23,327,843 km (0.062 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 813.3

Radius: 13.1

Gravity: 4.74 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 4.22 AU - 5.68 AU

Year: 7111 Days

Day: 9.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 48.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 75,361,747 km

• M1: 163,361 km (0.109 R)
• M2: 769,831 km (0.092 R)
• M3: 1,316,910 km (0.077 R)
• M4: 2,010,745 km (0.104 R)
• M5: 2,838,320 km (0.12 R)
• M6: 4,561,389 km (0.107 R)
• M7: 5,227,249 km (0.085 R)
• M8: 6,192,604 km (0.108 R)
• M9: 6,973,654 km (0.104 R)
• M10: 7,582,069 km (0.101 R)
• M11: 8,350,404 km (0.052 R)
• M12: 10,281,114 km (0.104 R)
• M13: 10,869,482 km (0.11 R)
• M14: 12,113,538 km (0.088 R)
• M15: 14,395,205 km (0.093 R)
• M16: 15,383,448 km (0.068 R)
• M17: 20,094,584 km (0.11 R)
• M18: 24,548,113 km (0.104 R)
• M19: 26,318,753 km (0.108 R)
• M20: 27,701,636 km (0.073 R)
• M21: 29,522,093 km (0.06 R)
• M22: 30,411,602 km (0.059 R)
• M23: 32,661,554 km (0.119 R)
• M24: 34,149,753 km (0.094 R)
• M25: 39,477,233 km (0.053 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 410.9

Radius: 7.5

Gravity: 7.3 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 6.52 AU - 8.92 AU

Year: 13850 Days

Day: 21.4 Hours

Environment

Temp: -221 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 75,361,747 km

• M1: 93,349 km (0.066 R)
• M2: 335,249 km (0.067 R)
• M3: 619,784 km (0.038 R)
• M4: 1,069,176 km (0.074 R)
• M5: 1,782,758 km (0.11 R)
• M6: 2,188,018 km (0.118 R)
• M7: 2,451,909 km (0.089 R)
• M8: 2,801,071 km (0.107 R)
• M9: 3,230,267 km (0.098 R)
• M10: 3,996,507 km (0.107 R)
• M11: 4,334,897 km (0.099 R)
• M12: 4,722,954 km (0.113 R)
• M13: 7,684,543 km (0.107 R)
• M14: 8,164,304 km (0.065 R)
• M15: 9,925,819 km (0.078 R)
• M16: 10,233,542 km (0.046 R)
• M17: 11,140,254 km (0.114 R)
• M18: 14,052,925 km (0.111 R)
• M19: 16,420,012 km (0.088 R)
• M20: 17,215,723 km (0.063 R)
• M21: 23,070,535 km (0.106 R)
• M22: 25,665,908 km (0.111 R)
• M23: 27,333,177 km (0.054 R)
• M24: 31,318,763 km (0.052 R)
• M25: 31,981,482 km (0.066 R)
• M26: 33,335,043 km (0.116 R)
• M27: 36,035,434 km (0.112 R)
• M28: 43,622,440 km (0.101 R)
• M29: 43,896,802 km (0.107 R)
• M30: 49,182,245 km (0.055 R)
• M31: 50,227,635 km (0.094 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 726.3

Radius: 3.8

Gravity: 50.3 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 8.46 AU - 10.7 AU

Year: 19145 Days

Day: 18.9 Hours

Environment

Temp: -222 °C

Axial Tilt: 102 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 75,361,747 km

• M1: 47,871 km (0.113 R)
• M2: 167,849 km (0.096 R)
• M3: 501,302 km (0.037 R)
• M4: 724,951 km (0.104 R)
• M5: 1,168,509 km (0.115 R)
• M6: 3,166,987 km (0.067 R)
• M7: 4,345,220 km (0.109 R)
• M8: 4,653,691 km (0.1 R)
• M9: 5,050,424 km (0.086 R)
• M10: 5,469,298 km (0.1 R)
• M11: 6,684,033 km (0.1 R)
• M12: 7,235,600 km (0.119 R)
• M13: 7,717,904 km (0.115 R)
• M14: 9,405,218 km (0.067 R)
• M15: 16,315,144 km (0.068 R)
• M16: 23,938,053 km (0.099 R)
• M17: 30,442,867 km (0.06 R)
• M18: 31,064,147 km (0.09 R)
• M19: 36,479,590 km (0.042 R)
• M20: 49,300,876 km (0.079 R)
• M21: 58,502,791 km (0.026 R)
• M22: 64,619,997 km (0.077 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 413 - 15,665 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit