🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.49

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 0.54 AU - 0.66 AU

Year: 305 Days

Day: 19.5 Hours

Environment

Temp: -122 °C

Axial Tilt: 22.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 680.5

Radius: 14.7

Gravity: 3.15 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.77 AU - 0.99 AU

Year: 542 Days

Day: 12.6 Hours

Environment

Temp: -142 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 66,427,871 km

• M1: 182,958 km (0.041 R)
• M2: 652,247 km (0.073 R)
• M3: 1,141,432 km (0.077 R)
• M4: 1,658,292 km (0.09 R)
• M5: 2,669,873 km (0.075 R)
• M6: 3,443,145 km (0.087 R)
• M7: 4,631,251 km (0.081 R)
• M8: 5,354,407 km (0.108 R)
• M9: 6,170,613 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 916.2

Radius: 8.3

Gravity: 13.3 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.91 AU - 1.03 AU

Year: 627 Days

Day: 9.5 Hours

Environment

Temp: -151 °C

Axial Tilt: 2.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 66,427,871 km

• M1: 103,223 km (0.029 R)
• M2: 380,577 km (0.087 R)
• M3: 666,309 km (0.103 R)
• M4: 930,648 km (0.114 R)
• M5: 1,391,859 km (0.108 R)
• M6: 2,017,477 km (0.12 R)
• M7: 3,451,522 km (0.119 R)
• M8: 3,773,008 km (0.102 R)
• M9: 4,541,791 km (0.114 R)
• M10: 5,139,285 km (0.094 R)
• M11: 5,578,505 km (0.103 R)
• M12: 5,904,628 km (0.117 R)
• M13: 7,114,426 km (0.1 R)
• M14: 7,475,406 km (0.088 R)
• M15: 7,896,075 km (0.093 R)
• M16: 8,234,166 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 58.4

Radius: 13.1

Gravity: 0.34 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 1.27 AU - 1.95 AU

Year: 1340 Days

Day: 12.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 66,427,871 km

• M1: 163,211 km (0.034 R)
• M2: 702,063 km (0.103 R)
• M3: 1,326,784 km (0.093 R)
• M4: 2,081,954 km (0.064 R)
• M5: 3,151,728 km (0.099 R)
• M6: 3,633,134 km (0.12 R)
• M7: 4,110,800 km (0.084 R)
• M8: 4,745,394 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 902.5

Radius: 14.5

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 1.87 AU - 2.79 AU

Year: 2333 Days

Day: 12.8 Hours

Environment

Temp: -200 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 66,427,871 km

• M1: 180,565 km (0.037 R)
• M2: 656,735 km (0.072 R)
• M3: 1,132,157 km (0.101 R)
• M4: 1,749,397 km (0.106 R)
• M5: 2,647,134 km (0.084 R)
• M6: 4,637,684 km (0.091 R)
• M7: 5,091,414 km (0.088 R)
• M8: 5,726,008 km (0.112 R)
• M9: 6,949,270 km (0.117 R)
• M10: 7,515,647 km (0.101 R)
• M11: 8,539,196 km (0.114 R)
• M12: 11,752,259 km (0.115 R)
• M13: 12,776,556 km (0.103 R)
• M14: 13,767,043 km (0.111 R)
• M15: 15,698,352 km (0.11 R)
• M16: 17,368,911 km (0.085 R)
• M17: 18,697,639 km (0.047 R)
• M18: 19,445,180 km (0.111 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 885.8

Radius: 4.6

Gravity: 41.86 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 5.04 AU - 7.2 AU

Year: 9932 Days

Day: 18.5 Hours

Environment

Temp: -215 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 66,427,871 km

• M1: 60,737 km (0.114 R)
• M2: 316,848 km (0.067 R)
• M3: 552,016 km (0.095 R)
• M4: 793,168 km (0.076 R)
• M5: 980,464 km (0.09 R)
• M6: 1,209,349 km (0.106 R)
• M7: 1,363,435 km (0.09 R)
• M8: 1,774,829 km (0.083 R)
• M9: 4,128,452 km (0.098 R)
• M10: 8,098,331 km (0.077 R)
• M11: 8,649,599 km (0.105 R)
• M12: 8,838,691 km (0.11 R)
• M13: 9,176,483 km (0.107 R)
• M14: 12,795,704 km (0.08 R)
• M15: 13,353,106 km (0.12 R)
• M16: 15,122,250 km (0.119 R)
• M17: 18,642,438 km (0.083 R)
• M18: 19,117,710 km (0.067 R)
• M19: 19,845,504 km (0.086 R)
• M20: 20,092,191 km (0.074 R)
• M21: 24,135,073 km (0.115 R)
• M22: 26,944,072 km (0.111 R)
• M23: 33,201,153 km (0.107 R)
• M24: 33,665,206 km (0.036 R)
• M25: 36,417,956 km (0.116 R)
• M26: 39,836,567 km (0.082 R)
• M27: 40,098,064 km (0.1 R)
• M28: 42,912,299 km (0.098 R)
• M29: 43,324,890 km (0.057 R)
• M30: 46,720,612 km (0.036 R)
• M31: 48,483,174 km (0.12 R)
• M32: 51,673,498 km (0.06 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 714.8

Radius: 6.5

Gravity: 16.92 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 7.5 AU - 9.3 AU

Year: 15971 Days

Day: 15.3 Hours

Environment

Temp: -223 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 66,427,871 km

• M1: 81,381 km (0.092 R)
• M2: 448,794 km (0.12 R)
• M3: 712,983 km (0.059 R)
• M4: 997,967 km (0.076 R)
• M5: 1,287,738 km (0.102 R)
• M6: 1,682,228 km (0.096 R)
• M7: 2,254,889 km (0.067 R)
• M8: 3,049,104 km (0.08 R)
• M9: 4,358,983 km (0.096 R)
• M10: 4,687,051 km (0.078 R)
• M11: 6,969,166 km (0.071 R)
• M12: 8,127,952 km (0.07 R)
• M13: 10,183,725 km (0.114 R)
• M14: 12,759,950 km (0.074 R)
• M15: 17,229,935 km (0.089 R)
• M16: 17,718,970 km (0.108 R)
• M17: 19,068,792 km (0.045 R)
• M18: 19,857,472 km (0.069 R)
• M19: 29,090,802 km (0.095 R)
• M20: 30,488,644 km (0.114 R)
• M21: 30,725,907 km (0.045 R)
• M22: 32,421,299 km (0.056 R)
• M23: 35,209,953 km (0.089 R)
• M24: 37,471,424 km (0.048 R)
• M25: 38,706,953 km (0.113 R)
• M26: 39,264,654 km (0.104 R)
• M27: 41,695,171 km (0.102 R)
• M28: 42,428,649 km (0.081 R)
• M29: 44,072,580 km (0.083 R)
• M30: 47,805,795 km (0.043 R)
• M31: 61,009,303 km (0.09 R)
• M32: 61,386,140 km (0.118 R)
• M33: 63,101,429 km (0.107 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: 194 - 13,309 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit