🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.69

Radius: 1.49

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.56 AU - 0.76 AU

Year: 352 Days

Day: 38.6 Hours

Environment

Temp: -139 °C

Axial Tilt: 33.9 °

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: 0.46

Radius: 0.73

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.51 AU - 0.83 AU

Year: 360 Days

Day: 34.9 Hours

Environment

Temp: -145 °C

Axial Tilt: 19.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 558.9

Radius: 12.4

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.64 AU - 0.76 AU

Year: 384 Days

Day: 6.2 Hours

Environment

Temp: -136 °C

Axial Tilt: 48.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 79,794,964 km

• M1: 154,235 km (0.079 R)
• M2: 581,337 km (0.076 R)
• M3: 1,050,925 km (0.064 R)
• M4: 1,709,305 km (0.085 R)
• M5: 2,158,248 km (0.069 R)
• M6: 2,714,902 km (0.111 R)
• M7: 3,783,629 km (0.065 R)
• M8: 4,275,058 km (0.114 R)
• M9: 5,040,700 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 459.8

Radius: 13.1

Gravity: 2.68 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.42 AU - 2.04 AU

Year: 1493 Days

Day: 14.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 79,794,964 km

• M1: 165,006 km (0.087 R)
• M2: 1,007,392 km (0.108 R)
• M3: 1,653,954 km (0.083 R)
• M4: 2,069,088 km (0.034 R)
• M5: 2,819,621 km (0.057 R)
• M6: 4,474,024 km (0.108 R)
• M7: 5,521,657 km (0.069 R)
• M8: 6,726,668 km (0.083 R)
• M9: 7,596,879 km (0.089 R)
• M10: 8,263,487 km (0.105 R)
• M11: 9,501,110 km (0.074 R)
• M12: 9,929,559 km (0.057 R)
• M13: 10,403,186 km (0.069 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 172.5

Radius: 8.4

Gravity: 2.44 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 2.9 AU - 3.72 AU

Year: 3950 Days

Day: 14 Hours

Environment

Temp: -213 °C

Axial Tilt: 47.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 79,794,964 km

• M1: 104,419 km (0.067 R)
• M2: 416,181 km (0.09 R)
• M3: 769,382 km (0.103 R)
• M4: 1,253,481 km (0.058 R)
• M5: 1,764,208 km (0.08 R)
• M6: 2,202,230 km (0.083 R)
• M7: 2,597,917 km (0.081 R)
• M8: 3,797,841 km (0.038 R)
• M9: 5,851,072 km (0.099 R)
• M10: 7,128,638 km (0.074 R)
• M11: 7,410,630 km (0.061 R)
• M12: 8,087,859 km (0.118 R)
• M13: 8,614,444 km (0.104 R)
• M14: 10,989,310 km (0.117 R)
• M15: 15,768,214 km (0.083 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 741.8

Radius: 9.3

Gravity: 8.58 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 4.38 AU - 5.78 AU

Year: 7511 Days

Day: 7.4 Hours

Environment

Temp: -212 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 79,794,964 km

• M1: 182,360 km (0.096 R)
• M2: 602,730 km (0.076 R)
• M3: 977,622 km (0.092 R)
• M4: 1,573,171 km (0.094 R)
• M5: 1,945,520 km (0.066 R)
• M6: 2,237,386 km (0.047 R)
• M7: 2,910,875 km (0.076 R)
• M8: 3,385,400 km (0.06 R)
• M9: 4,353,298 km (0.048 R)
• M10: 7,314,737 km (0.079 R)
• M11: 8,530,220 km (0.11 R)
• M12: 9,096,747 km (0.067 R)
• M13: 10,648,077 km (0.054 R)
• M14: 11,512,603 km (0.09 R)
• M15: 11,988,923 km (0.068 R)
• M16: 17,225,596 km (0.101 R)
• M17: 19,734,502 km (0.115 R)
• M18: 22,151,854 km (0.096 R)
• M19: 23,138,303 km (0.078 R)
• M20: 23,473,701 km (0.113 R)
• M21: 26,092,561 km (0.084 R)
• M22: 26,822,599 km (0.101 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 868.1

Radius: 4

Gravity: 54.26 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 7.72 AU - 11.12 AU

Year: 18966 Days

Day: 15.4 Hours

Environment

Temp: -227 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 79,794,964 km

• M1: 52,658 km (0.057 R)
• M2: 212,429 km (0.091 R)
• M3: 694,733 km (0.112 R)
• M4: 1,080,545 km (0.114 R)
• M5: 1,366,726 km (0.103 R)
• M6: 2,109,629 km (0.045 R)
• M7: 3,426,090 km (0.102 R)
• M8: 5,171,449 km (0.115 R)
• M9: 8,243,740 km (0.116 R)
• M10: 8,944,157 km (0.108 R)
• M11: 12,418,418 km (0.058 R)
• M12: 14,682,133 km (0.095 R)
• M13: 15,387,487 km (0.093 R)
• M14: 18,167,465 km (0.099 R)
• M15: 19,816,332 km (0.118 R)
• M16: 20,580,179 km (0.078 R)
• M17: 24,477,802 km (0.076 R)
• M18: 25,356,689 km (0.073 R)
• M19: 27,763,570 km (0.064 R)
• M20: 35,889,427 km (0.092 R)
• M21: 36,594,930 km (0.052 R)
• M22: 40,717,399 km (0.068 R)
• M23: 40,869,989 km (0.109 R)
• M24: 44,812,641 km (0.026 R)
• M25: 46,291,864 km (0.042 R)
• M26: 54,733,822 km (0.087 R)
• M27: 59,119,283 km (0.119 R)
• M28: 60,102,590 km (0.113 R)
• M29: 60,697,840 km (0.106 R)
• M30: 67,293,461 km (0.106 R)
• M31: 67,935,235 km (0.068 R)
• M32: 70,984,190 km (0.038 R)
• M33: 73,217,087 km (0.091 R)
• M34: 76,653,351 km (0.069 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 623.6

Radius: 4.9

Gravity: 25.97 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 10.14 AU - 10.98 AU

Year: 22512 Days

Day: 16.8 Hours

Environment

Temp: -232 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 79,794,964 km

• M1: 66,421 km (0.043 R)
• M2: 265,985 km (0.115 R)
• M3: 473,776 km (0.085 R)
• M4: 898,485 km (0.073 R)
• M5: 1,082,490 km (0.1 R)
• M6: 1,352,215 km (0.101 R)
• M7: 2,798,079 km (0.08 R)
• M8: 3,479,497 km (0.117 R)
• M9: 5,801,106 km (0.088 R)
• M10: 6,992,952 km (0.101 R)
• M11: 8,026,225 km (0.095 R)
• M12: 9,101,235 km (0.094 R)
• M13: 12,134,182 km (0.045 R)
• M14: 14,289,738 km (0.115 R)
• M15: 15,061,514 km (0.12 R)
• M16: 15,537,684 km (0.083 R)
• M17: 15,779,434 km (0.066 R)
• M18: 16,188,135 km (0.118 R)
• M19: 16,603,718 km (0.085 R)
• M20: 23,934,762 km (0.073 R)
• M21: 32,502,232 km (0.113 R)
• M22: 41,345,710 km (0.08 R)
• M23: 50,247,382 km (0.093 R)
• M24: 53,293,643 km (0.117 R)
• M25: 53,476,452 km (0.082 R)
• M26: 61,543,517 km (0.092 R)
• M27: 61,946,683 km (0.032 R)
• M28: 75,335,992 km (0.053 R)
• M29: 78,368,341 km (0.086 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 198 - 18,082 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit