🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.98

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.41 AU - 0.65 AU

Year: 253 Days

Day: 14.2 Hours

Environment

Temp: -127 °C

Axial Tilt: 27.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 733.1

Radius: 11.8

Gravity: 5.27 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.86 AU - 1.14 AU

Year: 656 Days

Day: 5.2 Hours

Environment

Temp: -161 °C

Axial Tilt: 24.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 35,378,735 km

• M1: 146,756 km (0.092 R)
• M2: 636,539 km (0.052 R)
• M3: 1,312,123 km (0.12 R)
• M4: 1,730,099 km (0.029 R)
• M5: 2,151,217 km (0.112 R)
• M6: 2,543,613 km (0.118 R)
• M7: 3,383,605 km (0.115 R)
• M8: 4,169,891 km (0.063 R)
• M9: 6,045,848 km (0.117 R)
• M10: 6,922,342 km (0.097 R)
• M11: 7,335,681 km (0.119 R)
• M12: 7,742,438 km (0.079 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 93.6

Radius: 12.3

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.96 AU - 1.34 AU

Year: 809 Days

Day: 8.4 Hours

Environment

Temp: -176 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 35,378,735 km

• M1: 153,039 km (0.047 R)
• M2: 625,469 km (0.111 R)
• M3: 1,156,541 km (0.078 R)
• M4: 1,962,425 km (0.101 R)
• M5: 2,421,990 km (0.074 R)
• M6: 2,885,444 km (0.106 R)
• M7: 3,791,109 km (0.104 R)
• M8: 4,190,536 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 632.9

Radius: 13.9

Gravity: 3.28 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 1.25 AU - 1.53 AU

Year: 1075 Days

Day: 14.4 Hours

Environment

Temp: -182 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 35,378,735 km

• M1: 172,935 km (0.07 R)
• M2: 1,033,422 km (0.12 R)
• M3: 1,517,970 km (0.045 R)
• M4: 1,957,339 km (0.045 R)
• M5: 2,647,284 km (0.066 R)
• M6: 3,380,164 km (0.102 R)
• M7: 3,951,927 km (0.034 R)
• M8: 4,483,299 km (0.105 R)
• M9: 5,939,335 km (0.087 R)
• M10: 7,842,968 km (0.07 R)
• M11: 9,795,968 km (0.098 R)
• M12: 10,246,856 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 309.9

Radius: 10.2

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 1.06 AU - 1.74 AU

Year: 1087 Days

Day: 8.8 Hours

Environment

Temp: -173 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 35,378,735 km

• M1: 126,859 km (0.052 R)
• M2: 538,104 km (0.057 R)
• M3: 983,606 km (0.092 R)
• M4: 1,865,186 km (0.057 R)
• M5: 2,435,304 km (0.062 R)
• M6: 3,879,671 km (0.064 R)
• M7: 5,467,952 km (0.077 R)
• M8: 6,386,782 km (0.085 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 318.5

Radius: 8.5

Gravity: 4.41 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 1.36 AU - 1.5 AU

Year: 1122 Days

Day: 13 Hours

Environment

Temp: -181 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 35,378,735 km

• M1: 106,214 km (0.069 R)
• M2: 429,346 km (0.107 R)
• M3: 756,068 km (0.115 R)
• M4: 1,043,296 km (0.11 R)
• M5: 1,532,929 km (0.06 R)
• M6: 2,023,311 km (0.114 R)
• M7: 3,082,464 km (0.116 R)
• M8: 3,438,357 km (0.11 R)
• M9: 3,850,948 km (0.075 R)
• M10: 4,185,599 km (0.045 R)
• M11: 4,457,568 km (0.108 R)
• M12: 5,001,655 km (0.108 R)
• M13: 5,382,232 km (0.085 R)
• M14: 5,801,705 km (0.076 R)
• M15: 7,443,691 km (0.113 R)
• M16: 8,160,265 km (0.096 R)
• M17: 8,586,319 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 807.6

Radius: 14.3

Gravity: 3.95 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 1.63 AU - 2.01 AU

Year: 1611 Days

Day: 8.8 Hours

Environment

Temp: -194 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 35,378,735 km

• M1: 177,872 km (0.118 R)
• M2: 734,675 km (0.117 R)
• M3: 1,491,940 km (0.054 R)
• M4: 3,377,322 km (0.119 R)
• M5: 3,846,460 km (0.111 R)
• M6: 4,672,989 km (0.119 R)
• M7: 5,215,131 km (0.072 R)
• M8: 5,706,560 km (0.036 R)
• M9: 6,552,686 km (0.075 R)
• M10: 7,234,254 km (0.062 R)
• M11: 8,525,583 km (0.052 R)
• M12: 13,447,502 km (0.106 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 127

Radius: 8.4

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 2.28 AU - 2.72 AU

Year: 2593 Days

Day: 6.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 35,378,735 km

• M1: 104,569 km (0.081 R)
• M2: 423,063 km (0.058 R)
• M3: 723,007 km (0.098 R)
• M4: 1,087,876 km (0.111 R)
• M5: 1,447,958 km (0.108 R)
• M6: 1,847,833 km (0.045 R)
• M7: 2,482,577 km (0.117 R)
• M8: 4,565,877 km (0.04 R)
• M9: 4,937,478 km (0.046 R)
• M10: 5,209,596 km (0.113 R)
• M11: 5,594,811 km (0.047 R)
• M12: 6,219,531 km (0.107 R)
• M13: 10,309,088 km (0.081 R)
• M14: 10,949,966 km (0.115 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 341.5

Radius: 12.2

Gravity: 2.29 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 2.75 AU - 3.79 AU

Year: 3879 Days

Day: 8.8 Hours

Environment

Temp: -215 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 35,378,735 km

• M1: 151,842 km (0.062 R)
• M2: 564,433 km (0.09 R)
• M3: 1,087,876 km (0.086 R)
• M4: 1,735,784 km (0.119 R)
• M5: 2,117,408 km (0.112 R)
• M6: 2,512,197 km (0.069 R)
• M7: 3,887,001 km (0.082 R)
• M8: 4,356,739 km (0.115 R)
• M9: 5,192,542 km (0.065 R)
• M10: 5,920,037 km (0.111 R)
• M11: 7,547,362 km (0.114 R)
• M12: 8,053,601 km (0.085 R)
• M13: 10,424,428 km (0.081 R)
• M14: 11,254,846 km (0.062 R)
• M15: 12,171,582 km (0.103 R)
• M16: 12,648,201 km (0.088 R)
• M17: 13,685,363 km (0.117 R)
• M18: 16,869,703 km (0.104 R)

Planet 10 - Gas Giant

Semi-Major Axis: 5.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 345.6

Radius: 10.7

Gravity: 3.02 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 4.88 AU - 6.52 AU

Year: 8927 Days

Day: 10.2 Hours

Environment

Temp: -216 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 35,378,735 km

• M1: 154,684 km (0.089 R)
• M2: 796,459 km (0.108 R)
• M3: 1,203,515 km (0.085 R)
• M4: 2,526,858 km (0.105 R)
• M5: 3,054,340 km (0.098 R)
• M6: 3,631,339 km (0.116 R)
• M7: 4,055,299 km (0.093 R)
• M8: 4,891,402 km (0.071 R)
• M9: 6,763,918 km (0.111 R)
• M10: 7,408,685 km (0.109 R)
• M11: 10,082,896 km (0.071 R)
• M12: 11,215,502 km (0.115 R)
• M13: 12,326,266 km (0.086 R)
• M14: 15,301,768 km (0.049 R)
• M15: 17,576,703 km (0.116 R)
• M16: 21,854,753 km (0.05 R)
• M17: 24,070,148 km (0.065 R)
• M18: 28,758,395 km (0.088 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: 465 - 11,107 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit