🌌 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: 3.8

Radius: 1.71

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.49 AU - 0.59 AU

Year: 256 Days

Day: 24.7 Hours

Environment

Temp: -120 °C

Axial Tilt: 2.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 93,528,532 km

• M1: 430,094 km (0.116 R)
• M2: 710,590 km (0.066 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.13

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.53 AU - 0.71 AU

Year: 315 Days

Day: 24.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 47.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 823.6

Radius: 14.3

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.65 AU - 0.85 AU

Year: 419 Days

Day: 6.7 Hours

Environment

Temp: -152 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 93,528,532 km

• M1: 177,872 km (0.074 R)
• M2: 646,263 km (0.116 R)
• M3: 1,533,977 km (0.088 R)
• M4: 1,982,770 km (0.103 R)
• M5: 2,608,688 km (0.099 R)
• M6: 3,168,483 km (0.113 R)
• M7: 3,731,719 km (0.07 R)
• M8: 4,263,240 km (0.077 R)
• M9: 5,014,670 km (0.054 R)
• M10: 5,563,545 km (0.057 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 676.3

Radius: 13.2

Gravity: 3.88 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.77 AU - 0.79 AU

Year: 445 Days

Day: 8.3 Hours

Environment

Temp: -147 °C

Axial Tilt: 42.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 93,528,532 km

• M1: 164,408 km (0.055 R)
• M2: 808,576 km (0.094 R)
• M3: 1,336,807 km (0.082 R)
• M4: 1,924,726 km (0.116 R)
• M5: 2,478,089 km (0.062 R)
• M6: 2,950,968 km (0.095 R)
• M7: 3,556,839 km (0.069 R)
• M8: 4,943,013 km (0.117 R)
• M9: 5,532,428 km (0.095 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 141.1

Radius: 13.5

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 1.26 AU - 1.62 AU

Year: 1116 Days

Day: 11.3 Hours

Environment

Temp: -178 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 93,528,532 km

• M1: 167,849 km (0.113 R)
• M2: 683,363 km (0.114 R)
• M3: 1,820,307 km (0.079 R)
• M4: 2,985,226 km (0.101 R)
• M5: 3,849,752 km (0.099 R)
• M6: 4,319,788 km (0.057 R)
• M7: 4,890,654 km (0.086 R)
• M8: 5,343,187 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 794.7

Radius: 12

Gravity: 5.52 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 4.98 AU - 6.54 AU

Year: 8926 Days

Day: 6.9 Hours

Environment

Temp: -219 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 93,528,532 km

• M1: 168,148 km (0.109 R)
• M2: 562,039 km (0.086 R)
• M3: 1,065,286 km (0.097 R)
• M4: 2,043,806 km (0.036 R)
• M5: 3,646,897 km (0.076 R)
• M6: 4,738,812 km (0.062 R)
• M7: 5,491,887 km (0.065 R)
• M8: 5,932,154 km (0.032 R)
• M9: 6,922,641 km (0.107 R)
• M10: 7,808,560 km (0.059 R)
• M11: 8,279,045 km (0.057 R)
• M12: 8,723,201 km (0.066 R)
• M13: 10,102,195 km (0.105 R)
• M14: 10,507,006 km (0.116 R)
• M15: 15,438,799 km (0.118 R)
• M16: 16,666,848 km (0.096 R)
• M17: 18,106,578 km (0.047 R)
• M18: 19,085,846 km (0.102 R)
• M19: 20,339,177 km (0.081 R)
• M20: 20,904,358 km (0.087 R)
• M21: 23,009,349 km (0.096 R)
• M22: 31,222,123 km (0.109 R)
• M23: 32,629,390 km (0.117 R)
• M24: 33,852,801 km (0.11 R)
• M25: 34,418,880 km (0.118 R)
• M26: 35,337,859 km (0.095 R)
• M27: 36,155,262 km (0.111 R)
• M28: 37,104,760 km (0.106 R)
• M29: 37,706,592 km (0.1 R)
• M30: 41,843,572 km (0.054 R)
• M31: 45,583,369 km (0.078 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 189.9

Radius: 3.9

Gravity: 12.49 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 7.22 AU - 9.9 AU

Year: 16171 Days

Day: 17.1 Hours

Environment

Temp: -221 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 93,528,532 km

• M1: 48,470 km (0.116 R)
• M2: 295,157 km (0.047 R)
• M3: 1,525,001 km (0.09 R)
• M4: 2,139,998 km (0.114 R)
• M5: 2,353,175 km (0.12 R)
• M6: 2,580,264 km (0.04 R)
• M7: 3,687,438 km (0.11 R)
• M8: 6,272,190 km (0.067 R)
• M9: 7,601,816 km (0.117 R)
• M10: 10,150,964 km (0.078 R)
• M11: 12,079,579 km (0.102 R)
• M12: 13,691,945 km (0.068 R)
• M13: 16,168,987 km (0.093 R)
• M14: 22,485,308 km (0.11 R)
• M15: 23,849,940 km (0.111 R)
• M16: 24,287,364 km (0.077 R)
• M17: 24,552,451 km (0.068 R)
• M18: 25,088,311 km (0.115 R)
• M19: 27,885,342 km (0.12 R)
• M20: 31,717,591 km (0.076 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 919.6

Radius: 3.2

Gravity: 89.8 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 9.2 AU - 12.78 AU

Year: 23524 Days

Day: 16 Hours

Environment

Temp: -230 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 93,528,532 km

• M1: 40,840 km (0.108 R)
• M2: 408,552 km (0.064 R)
• M3: 1,076,506 km (0.119 R)
• M4: 1,682,976 km (0.056 R)
• M5: 2,415,557 km (0.103 R)
• M6: 4,930,596 km (0.085 R)
• M7: 9,439,626 km (0.098 R)
• M8: 9,870,468 km (0.088 R)
• M9: 13,645,420 km (0.114 R)
• M10: 14,760,971 km (0.082 R)
• M11: 16,901,567 km (0.061 R)
• M12: 17,905,818 km (0.059 R)
• M13: 18,756,431 km (0.081 R)
• M14: 19,338,218 km (0.095 R)
• M15: 27,409,023 km (0.115 R)
• M16: 33,218,506 km (0.081 R)
• M17: 33,642,018 km (0.043 R)
• M18: 62,669,989 km (0.118 R)
• M19: 69,335,322 km (0.07 R)
• M20: 79,941,811 km (0.076 R)
• M21: 81,979,633 km (0.115 R)
• M22: 84,575,156 km (0.106 R)
• M23: 87,224,983 km (0.119 R)
• M24: 89,384,279 km (0.077 R)
• M25: 90,477,241 km (0.113 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 516 - 14,175 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit