🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.86

Radius: 1.72

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.52 AU - 0.64 AU

Year: 290 Days

Day: 47.7 Hours

Environment

Temp: -130 °C

Axial Tilt: 5.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.15

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.67 AU - 0.67 AU

Year: 360 Days

Day: 13.9 Hours

Environment

Temp: -132 °C

Axial Tilt: 38.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 79,106,658 km

• M1: 192,383 km (0.12 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 952.2

Radius: 13.1

Gravity: 5.55 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.79 AU - 0.87 AU

Year: 496 Days

Day: 5.2 Hours

Environment

Temp: -150 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 79,106,658 km

• M1: 162,912 km (0.099 R)
• M2: 724,203 km (0.089 R)
• M3: 1,190,201 km (0.117 R)
• M4: 1,886,280 km (0.037 R)
• M5: 2,421,990 km (0.108 R)
• M6: 3,152,925 km (0.083 R)
• M7: 3,669,935 km (0.101 R)
• M8: 4,199,212 km (0.107 R)
• M9: 4,652,943 km (0.11 R)
• M10: 5,623,982 km (0.088 R)
• M11: 6,408,474 km (0.09 R)
• M12: 6,888,683 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 355.3

Radius: 10.8

Gravity: 3.05 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.96 AU - 2.68 AU

Year: 2318 Days

Day: 7.7 Hours

Environment

Temp: -189 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 79,106,658 km

• M1: 134,339 km (0.103 R)
• M2: 550,969 km (0.053 R)
• M3: 943,215 km (0.05 R)
• M4: 1,455,138 km (0.08 R)
• M5: 2,426,926 km (0.12 R)
• M6: 3,275,745 km (0.109 R)
• M7: 3,769,118 km (0.069 R)
• M8: 4,641,872 km (0.11 R)
• M9: 5,158,284 km (0.116 R)
• M10: 5,851,670 km (0.093 R)
• M11: 6,405,332 km (0.115 R)
• M12: 6,759,281 km (0.072 R)
• M13: 7,099,616 km (0.056 R)
• M14: 7,645,648 km (0.085 R)
• M15: 9,039,601 km (0.039 R)
• M16: 9,389,062 km (0.074 R)
• M17: 9,846,831 km (0.062 R)
• M18: 10,949,218 km (0.062 R)
• M19: 11,941,800 km (0.025 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 637.7

Radius: 14.8

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 1.98 AU - 3.03 AU

Year: 2593 Days

Day: 14.6 Hours

Environment

Temp: -198 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 79,106,658 km

• M1: 184,005 km (0.114 R)
• M2: 855,251 km (0.104 R)
• M3: 1,483,113 km (0.083 R)
• M4: 2,990,162 km (0.059 R)
• M5: 3,511,810 km (0.111 R)
• M6: 4,632,747 km (0.116 R)
• M7: 5,677,090 km (0.058 R)
• M8: 6,760,477 km (0.028 R)
• M9: 7,337,028 km (0.099 R)
• M10: 7,821,725 km (0.12 R)
• M11: 9,301,547 km (0.118 R)
• M12: 10,538,272 km (0.059 R)
• M13: 11,078,470 km (0.059 R)
• M14: 12,767,580 km (0.102 R)
• M15: 13,248,687 km (0.073 R)
• M16: 15,442,689 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 747.6

Radius: 12.7

Gravity: 4.64 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 3.33 AU - 3.61 AU

Year: 4240 Days

Day: 12 Hours

Environment

Temp: -203 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 79,106,658 km

• M1: 158,125 km (0.093 R)
• M2: 570,267 km (0.09 R)
• M3: 1,023,549 km (0.076 R)
• M4: 2,011,493 km (0.11 R)
• M5: 2,698,596 km (0.118 R)
• M6: 3,220,992 km (0.056 R)
• M7: 6,984,874 km (0.059 R)
• M8: 8,713,777 km (0.1 R)
• M9: 9,177,680 km (0.069 R)
• M10: 9,698,580 km (0.094 R)
• M11: 10,452,553 km (0.086 R)
• M12: 11,065,754 km (0.071 R)
• M13: 11,795,792 km (0.115 R)
• M14: 17,774,471 km (0.078 R)
• M15: 18,840,057 km (0.073 R)
• M16: 20,014,101 km (0.097 R)
• M17: 20,960,606 km (0.097 R)
• M18: 24,054,590 km (0.068 R)
• M19: 24,509,218 km (0.118 R)
• M20: 25,671,144 km (0.052 R)
• M21: 26,066,382 km (0.094 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 458

Radius: 12.5

Gravity: 2.93 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 3.02 AU - 4.32 AU

Year: 4612 Days

Day: 10.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 79,106,658 km

• M1: 155,731 km (0.028 R)
• M2: 860,936 km (0.086 R)
• M3: 1,354,609 km (0.119 R)
• M4: 1,770,790 km (0.091 R)
• M5: 2,391,172 km (0.073 R)
• M6: 3,591,546 km (0.049 R)
• M7: 4,136,381 km (0.074 R)
• M8: 5,743,960 km (0.08 R)
• M9: 7,667,489 km (0.103 R)
• M10: 8,466,791 km (0.113 R)
• M11: 9,670,306 km (0.076 R)
• M12: 10,109,375 km (0.107 R)
• M13: 11,113,775 km (0.105 R)
• M14: 12,183,699 km (0.032 R)
• M15: 16,137,122 km (0.116 R)
• M16: 21,072,805 km (0.115 R)
• M17: 21,541,645 km (0.081 R)
• M18: 23,558,373 km (0.074 R)
• M19: 24,136,120 km (0.044 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 692.4

Radius: 5.3

Gravity: 24.65 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 9.47 AU - 10.75 AU

Year: 21088 Days

Day: 19.1 Hours

Environment

Temp: -235 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 79,106,658 km

• M1: 65,973 km (0.109 R)
• M2: 625,319 km (0.073 R)
• M3: 873,502 km (0.102 R)
• M4: 1,065,735 km (0.044 R)
• M5: 1,300,903 km (0.118 R)
• M6: 1,604,437 km (0.094 R)
• M7: 2,178,743 km (0.064 R)
• M8: 3,037,435 km (0.117 R)
• M9: 4,037,198 km (0.103 R)
• M10: 5,011,529 km (0.115 R)
• M11: 8,324,673 km (0.067 R)
• M12: 8,752,672 km (0.082 R)
• M13: 9,946,014 km (0.081 R)
• M14: 10,489,204 km (0.109 R)
• M15: 11,308,402 km (0.115 R)
• M16: 11,503,328 km (0.055 R)
• M17: 14,936,001 km (0.066 R)
• M18: 20,980,802 km (0.072 R)
• M19: 23,415,208 km (0.119 R)
• M20: 25,138,725 km (0.108 R)
• M21: 26,714,739 km (0.115 R)
• M22: 29,814,257 km (0.054 R)
• M23: 33,544,779 km (0.061 R)
• M24: 35,730,554 km (0.061 R)
• M25: 36,858,073 km (0.049 R)
• M26: 37,864,119 km (0.092 R)
• M27: 39,036,068 km (0.095 R)
• M28: 40,081,159 km (0.097 R)
• M29: 42,696,728 km (0.084 R)
• M30: 44,448,519 km (0.12 R)
• M31: 48,094,668 km (0.062 R)
• M32: 48,778,331 km (0.118 R)
• M33: 50,165,103 km (0.113 R)
• M34: 51,756,375 km (0.108 R)
• M35: 52,835,724 km (0.108 R)
• M36: 59,825,236 km (0.077 R)
• M37: 69,560,018 km (0.113 R)
• M38: 70,214,808 km (0.111 R)
• M39: 70,653,728 km (0.068 R)
• M40: 74,003,823 km (0.095 R)
• M41: 75,143,758 km (0.11 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 217 - 14,425 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit