🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.84

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.54 AU - 0.56 AU

Year: 268 Days

Day: 30.5 Hours

Environment

Temp: -132 °C

Axial Tilt: 15.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 39,771,882 km

• M1: 78,838 km (0.099 R)
• M2: 310,416 km (0.063 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 79.2

Radius: 13.1

Gravity: 0.46 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.77 AU - 0.99 AU

Year: 542 Days

Day: 7.1 Hours

Environment

Temp: -158 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 39,771,882 km

• M1: 165,754 km (0.077 R)
• M2: 597,195 km (0.06 R)
• M3: 1,248,843 km (0.106 R)
• M4: 1,961,228 km (0.045 R)
• M5: 2,606,593 km (0.07 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 61.1

Radius: 12

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 0.92 AU - 0.92 AU

Year: 579 Days

Day: 7.8 Hours

Environment

Temp: -163 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 39,771,882 km

• M1: 149,299 km (0.057 R)
• M2: 533,466 km (0.113 R)
• M3: 953,986 km (0.113 R)
• M4: 1,571,526 km (0.049 R)
• M5: 1,999,376 km (0.091 R)
• M6: 2,421,690 km (0.112 R)
• M7: 2,972,659 km (0.06 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 378.1

Radius: 13.6

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.99 AU - 1.11 AU

Year: 706 Days

Day: 13.3 Hours

Environment

Temp: -164 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 39,771,882 km

• M1: 170,242 km (0.116 R)
• M2: 1,042,548 km (0.058 R)
• M3: 1,759,720 km (0.095 R)
• M4: 2,273,140 km (0.036 R)
• M5: 2,747,215 km (0.068 R)
• M6: 3,299,531 km (0.098 R)
• M7: 3,952,974 km (0.11 R)
• M8: 5,266,593 km (0.074 R)
• M9: 5,781,659 km (0.066 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 522.4

Radius: 12.1

Gravity: 3.57 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 1.92 AU - 2.02 AU

Year: 1814 Days

Day: 14.5 Hours

Environment

Temp: -190 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 39,771,882 km

• M1: 150,495 km (0.06 R)
• M2: 552,166 km (0.093 R)
• M3: 942,766 km (0.099 R)
• M4: 1,610,271 km (0.102 R)
• M5: 2,523,716 km (0.03 R)
• M6: 3,671,581 km (0.079 R)
• M7: 4,891,701 km (0.089 R)
• M8: 6,463,526 km (0.109 R)
• M9: 7,446,384 km (0.111 R)
• M10: 8,002,439 km (0.114 R)
• M11: 9,260,557 km (0.086 R)
• M12: 9,643,228 km (0.114 R)
• M13: 10,270,642 km (0.085 R)
• M14: 11,316,780 km (0.112 R)
• M15: 12,356,036 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 824.9

Radius: 8.5

Gravity: 11.42 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 2.19 AU - 2.65 AU

Year: 2470 Days

Day: 10.9 Hours

Environment

Temp: -193 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 39,771,882 km

• M1: 105,766 km (0.099 R)
• M2: 544,087 km (0.12 R)
• M3: 999,015 km (0.107 R)
• M4: 1,336,358 km (0.093 R)
• M5: 1,704,369 km (0.057 R)
• M6: 1,999,076 km (0.117 R)
• M7: 2,397,904 km (0.113 R)
• M8: 3,163,397 km (0.076 R)
• M9: 3,650,038 km (0.072 R)
• M10: 4,001,743 km (0.105 R)
• M11: 4,705,302 km (0.098 R)
• M12: 6,693,906 km (0.087 R)
• M13: 6,984,126 km (0.115 R)
• M14: 8,262,889 km (0.052 R)
• M15: 10,522,116 km (0.085 R)
• M16: 11,730,717 km (0.113 R)
• M17: 12,850,756 km (0.086 R)
• M18: 13,119,135 km (0.111 R)
• M19: 13,899,737 km (0.086 R)
• M20: 14,469,106 km (0.073 R)
• M21: 15,103,401 km (0.113 R)
• M22: 16,322,923 km (0.104 R)
• M23: 17,552,169 km (0.077 R)
• M24: 19,072,382 km (0.103 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 477

Radius: 10.6

Gravity: 4.25 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 1.85 AU - 3.07 AU

Year: 2531 Days

Day: 14.5 Hours

Environment

Temp: -201 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 39,771,882 km

• M1: 131,945 km (0.119 R)
• M2: 578,196 km (0.115 R)
• M3: 1,000,211 km (0.066 R)
• M4: 1,435,840 km (0.083 R)
• M5: 1,928,167 km (0.074 R)
• M6: 2,572,784 km (0.115 R)
• M7: 4,055,449 km (0.108 R)
• M8: 5,114,901 km (0.076 R)
• M9: 5,625,179 km (0.072 R)
• M10: 5,992,292 km (0.106 R)
• M11: 7,191,319 km (0.077 R)
• M12: 10,345,441 km (0.118 R)
• M13: 13,096,396 km (0.119 R)
• M14: 13,831,670 km (0.056 R)
• M15: 15,718,248 km (0.113 R)
• M16: 16,598,482 km (0.052 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 579.9

Radius: 14.3

Gravity: 2.84 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 3.44 AU - 5.42 AU

Year: 6117 Days

Day: 9.4 Hours

Environment

Temp: -213 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 39,771,882 km

• M1: 178,021 km (0.104 R)
• M2: 673,490 km (0.083 R)
• M3: 1,335,011 km (0.101 R)
• M4: 1,919,041 km (0.098 R)
• M5: 2,852,682 km (0.115 R)
• M6: 4,288,821 km (0.073 R)
• M7: 4,880,032 km (0.069 R)
• M8: 5,854,064 km (0.104 R)
• M9: 6,518,129 km (0.063 R)
• M10: 7,922,554 km (0.12 R)
• M11: 8,938,323 km (0.097 R)
• M12: 9,648,165 km (0.043 R)
• M13: 11,323,960 km (0.072 R)
• M14: 14,218,679 km (0.083 R)
• M15: 15,480,537 km (0.082 R)
• M16: 19,028,400 km (0.067 R)
• M17: 22,778,819 km (0.11 R)
• M18: 25,153,386 km (0.105 R)
• M19: 30,204,259 km (0.11 R)
• M20: 32,576,283 km (0.089 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 654.2

Radius: 9.9

Gravity: 6.67 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 4.32 AU - 6.04 AU

Year: 7734 Days

Day: 13 Hours

Environment

Temp: -221 °C

Axial Tilt: 153.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 39,771,882 km

• M1: 123,119 km (0.117 R)
• M2: 605,572 km (0.094 R)
• M3: 956,678 km (0.053 R)
• M4: 1,794,127 km (0.113 R)
• M5: 2,776,536 km (0.089 R)
• M6: 3,664,400 km (0.117 R)
• M7: 5,860,347 km (0.104 R)
• M8: 6,262,915 km (0.101 R)
• M9: 6,828,245 km (0.04 R)
• M10: 7,350,491 km (0.079 R)
• M11: 7,899,216 km (0.098 R)
• M12: 9,078,496 km (0.026 R)
• M13: 9,618,395 km (0.034 R)
• M14: 10,179,537 km (0.107 R)
• M15: 12,048,014 km (0.078 R)
• M16: 12,425,749 km (0.063 R)
• M17: 15,107,739 km (0.09 R)
• M18: 16,059,780 km (0.049 R)
• M19: 17,804,241 km (0.058 R)
• M20: 18,866,236 km (0.093 R)
• M21: 20,045,067 km (0.063 R)
• M22: 22,225,008 km (0.105 R)
• M23: 22,793,779 km (0.115 R)
• M24: 23,539,225 km (0.109 R)
• M25: 24,558,435 km (0.119 R)
• M26: 25,341,879 km (0.072 R)
• M27: 28,263,077 km (0.066 R)
• M28: 31,198,935 km (0.112 R)
• M29: 37,554,601 km (0.091 R)
• M30: 39,416,047 km (0.111 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 298 - 12,468 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit