🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.39

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.49 AU - 0.71 AU

Year: 300 Days

Day: 32.1 Hours

Environment

Temp: -130 °C

Axial Tilt: 167.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 755.7

Radius: 9.7

Gravity: 8.03 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.71 AU - 0.97 AU

Year: 497 Days

Day: 14.2 Hours

Environment

Temp: -151 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 42,669,618 km

• M1: 120,576 km (0.061 R)
• M2: 590,612 km (0.083 R)
• M3: 932,743 km (0.091 R)
• M4: 2,028,248 km (0.057 R)
• M5: 2,678,550 km (0.077 R)
• M6: 3,099,069 km (0.095 R)
• M7: 3,525,124 km (0.105 R)
• M8: 3,839,729 km (0.092 R)
• M9: 4,678,374 km (0.093 R)
• M10: 4,994,325 km (0.056 R)
• M11: 5,937,988 km (0.066 R)
• M12: 6,271,442 km (0.092 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 947.2

Radius: 12.3

Gravity: 6.26 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1.22 AU - 1.76 AU

Year: 1174 Days

Day: 14.6 Hours

Environment

Temp: -179 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 42,669,618 km

• M1: 153,787 km (0.108 R)
• M2: 559,795 km (0.098 R)
• M3: 1,070,522 km (0.093 R)
• M4: 1,466,658 km (0.111 R)
• M5: 2,145,383 km (0.115 R)
• M6: 3,408,139 km (0.075 R)
• M7: 3,907,646 km (0.083 R)
• M8: 4,455,922 km (0.077 R)
• M9: 5,512,382 km (0.108 R)
• M10: 11,594,284 km (0.089 R)
• M11: 11,989,073 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 434.9

Radius: 10.6

Gravity: 3.87 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 2 AU - 2.32 AU

Year: 2050 Days

Day: 9 Hours

Environment

Temp: -182 °C

Axial Tilt: 168.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 42,669,618 km

• M1: 132,693 km (0.106 R)
• M2: 655,837 km (0.055 R)
• M3: 993,180 km (0.113 R)
• M4: 1,720,824 km (0.09 R)
• M5: 2,759,632 km (0.096 R)
• M6: 4,712,782 km (0.118 R)
• M7: 5,384,177 km (0.115 R)
• M8: 6,814,033 km (0.069 R)
• M9: 7,154,668 km (0.112 R)
• M10: 8,815,503 km (0.085 R)
• M11: 9,347,623 km (0.089 R)
• M12: 9,834,863 km (0.1 R)
• M13: 11,545,664 km (0.107 R)
• M14: 12,183,101 km (0.061 R)
• M15: 13,734,132 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 797.5

Radius: 13.9

Gravity: 4.13 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 2.29 AU - 2.53 AU

Year: 2416 Days

Day: 9.2 Hours

Environment

Temp: -200 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 42,669,618 km

• M1: 173,234 km (0.088 R)
• M2: 650,601 km (0.069 R)
• M3: 1,279,211 km (0.083 R)
• M4: 2,109,480 km (0.119 R)
• M5: 2,994,052 km (0.088 R)
• M6: 6,850,685 km (0.103 R)
• M7: 7,996,605 km (0.036 R)
• M8: 9,301,846 km (0.092 R)
• M9: 10,979,287 km (0.114 R)
• M10: 12,719,709 km (0.077 R)
• M11: 18,251,688 km (0.117 R)
• M12: 18,926,075 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 974

Radius: 14.4

Gravity: 4.7 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 3.3 AU - 3.72 AU

Year: 4246 Days

Day: 10.4 Hours

Environment

Temp: -198 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 42,669,618 km

• M1: 179,069 km (0.107 R)
• M2: 629,657 km (0.075 R)
• M3: 2,405,683 km (0.115 R)
• M4: 2,900,852 km (0.11 R)
• M5: 3,718,554 km (0.109 R)
• M6: 4,584,277 km (0.112 R)
• M7: 6,555,229 km (0.111 R)
• M8: 8,077,088 km (0.118 R)
• M9: 9,161,374 km (0.067 R)
• M10: 9,865,830 km (0.035 R)
• M11: 10,340,803 km (0.118 R)
• M12: 11,619,117 km (0.051 R)
• M13: 14,378,599 km (0.063 R)
• M14: 15,103,401 km (0.056 R)
• M15: 15,793,795 km (0.054 R)
• M16: 19,499,634 km (0.06 R)
• M17: 20,180,753 km (0.082 R)
• M18: 22,172,349 km (0.105 R)
• M19: 25,160,716 km (0.075 R)
• M20: 26,543,749 km (0.114 R)
• M21: 27,805,607 km (0.075 R)
• M22: 29,461,057 km (0.051 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 608

Radius: 8.5

Gravity: 8.42 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 4.86 AU - 6.04 AU

Year: 8215 Days

Day: 14.1 Hours

Environment

Temp: -212 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 42,669,618 km

• M1: 106,214 km (0.103 R)
• M2: 447,896 km (0.08 R)
• M3: 1,249,142 km (0.069 R)
• M4: 3,377,322 km (0.106 R)
• M5: 3,926,944 km (0.059 R)
• M6: 5,173,543 km (0.098 R)
• M7: 5,578,355 km (0.066 R)
• M8: 9,163,468 km (0.116 R)
• M9: 11,957,208 km (0.077 R)
• M10: 12,833,403 km (0.095 R)
• M11: 13,869,518 km (0.089 R)
• M12: 16,569,011 km (0.045 R)
• M13: 17,726,749 km (0.049 R)
• M14: 18,361,044 km (0.098 R)
• M15: 18,937,445 km (0.04 R)
• M16: 20,050,752 km (0.067 R)
• M17: 21,128,754 km (0.103 R)
• M18: 21,681,967 km (0.105 R)
• M19: 24,077,179 km (0.117 R)
• M20: 37,000,490 km (0.111 R)
• M21: 37,919,919 km (0.095 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 326.6

Radius: 7.2

Gravity: 6.3 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 6.17 AU - 7.99 AU

Year: 12164 Days

Day: 15.6 Hours

Environment

Temp: -230 °C

Axial Tilt: 150.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 42,669,618 km

• M1: 100,679 km (0.097 R)
• M2: 600,935 km (0.041 R)
• M3: 846,574 km (0.068 R)
• M4: 1,106,725 km (0.09 R)
• M5: 1,358,049 km (0.054 R)
• M6: 1,822,850 km (0.096 R)
• M7: 3,522,431 km (0.117 R)
• M8: 4,828,122 km (0.067 R)
• M9: 7,647,742 km (0.108 R)
• M10: 8,184,350 km (0.044 R)
• M11: 9,754,380 km (0.12 R)
• M12: 13,419,079 km (0.045 R)
• M13: 13,656,042 km (0.103 R)
• M14: 16,996,562 km (0.106 R)
• M15: 17,909,707 km (0.091 R)
• M16: 19,227,366 km (0.12 R)
• M17: 24,878,874 km (0.108 R)
• M18: 25,326,920 km (0.117 R)
• M19: 26,609,871 km (0.069 R)
• M20: 30,411,751 km (0.113 R)
• M21: 35,118,399 km (0.091 R)
• M22: 35,343,095 km (0.098 R)
• M23: 36,481,535 km (0.104 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 548 - 19,764 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit