🌌 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: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.66

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.47 AU - 0.65 AU

Year: 266 Days

Day: 14.8 Hours

Environment

Temp: -123 °C

Axial Tilt: 25.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 600

Radius: 9.1

Gravity: 7.25 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.59 AU - 0.83 AU

Year: 380 Days

Day: 9.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 84,148,304 km

• M1: 113,246 km (0.081 R)
• M2: 398,230 km (0.116 R)
• M3: 736,022 km (0.109 R)
• M4: 1,539,063 km (0.114 R)
• M5: 1,967,810 km (0.108 R)
• M6: 2,253,842 km (0.064 R)
• M7: 2,809,747 km (0.117 R)
• M8: 3,442,995 km (0.101 R)
• M9: 3,849,303 km (0.108 R)
• M10: 4,142,066 km (0.119 R)
• M11: 4,744,048 km (0.095 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 227.5

Radius: 12.7

Gravity: 1.41 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.97 AU - 1.43 AU

Year: 836 Days

Day: 10.1 Hours

Environment

Temp: -173 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 84,148,304 km

• M1: 157,975 km (0.119 R)
• M2: 632,949 km (0.107 R)
• M3: 1,165,068 km (0.084 R)
• M4: 1,675,795 km (0.12 R)
• M5: 2,199,537 km (0.079 R)
• M6: 2,634,867 km (0.04 R)
• M7: 3,385,699 km (0.053 R)
• M8: 3,878,026 km (0.115 R)
• M9: 4,317,395 km (0.119 R)
• M10: 4,897,984 km (0.096 R)
• M11: 5,412,900 km (0.068 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 546.9

Radius: 11

Gravity: 4.52 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 1.01 AU - 1.59 AU

Year: 942 Days

Day: 9 Hours

Environment

Temp: -163 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 84,148,304 km

• M1: 136,732 km (0.113 R)
• M2: 607,667 km (0.117 R)
• M3: 1,042,996 km (0.098 R)
• M4: 1,526,048 km (0.096 R)
• M5: 1,925,175 km (0.108 R)
• M6: 2,616,766 km (0.044 R)
• M7: 3,117,021 km (0.038 R)
• M8: 3,522,880 km (0.096 R)
• M9: 4,558,846 km (0.077 R)
• M10: 4,922,368 km (0.095 R)
• M11: 5,571,623 km (0.086 R)
• M12: 6,277,127 km (0.088 R)
• M13: 7,041,123 km (0.049 R)
• M14: 7,552,299 km (0.093 R)
• M15: 7,988,825 km (0.102 R)
• M16: 9,181,719 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 73.7

Radius: 9.5

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 1.23 AU - 1.95 AU

Year: 1275 Days

Day: 10.7 Hours

Environment

Temp: -172 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 84,148,304 km

• M1: 118,332 km (0.071 R)
• M2: 435,928 km (0.056 R)
• M3: 751,580 km (0.12 R)
• M4: 1,714,990 km (0.116 R)
• M5: 2,571,887 km (0.081 R)
• M6: 3,305,814 km (0.081 R)
• M7: 5,029,181 km (0.098 R)
• M8: 5,540,208 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 780.6

Radius: 13.9

Gravity: 4.04 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 2.81 AU - 2.89 AU

Year: 3059 Days

Day: 13.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 84,148,304 km

• M1: 172,935 km (0.08 R)
• M2: 757,863 km (0.115 R)
• M3: 2,242,173 km (0.091 R)
• M4: 2,730,460 km (0.118 R)
• M5: 3,399,911 km (0.075 R)
• M6: 4,394,587 km (0.1 R)
• M7: 5,094,256 km (0.086 R)
• M8: 5,680,082 km (0.072 R)
• M9: 6,310,786 km (0.06 R)
• M10: 6,927,129 km (0.084 R)
• M11: 8,948,197 km (0.087 R)
• M12: 9,425,414 km (0.118 R)
• M13: 12,072,399 km (0.092 R)
• M14: 14,124,283 km (0.052 R)
• M15: 16,562,728 km (0.082 R)
• M16: 18,259,019 km (0.046 R)
• M17: 19,635,768 km (0.077 R)
• M18: 22,394,053 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 656.2

Radius: 10.5

Gravity: 5.95 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 2.88 AU - 2.96 AU

Year: 3173 Days

Day: 13.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 84,148,304 km

• M1: 133,890 km (0.11 R)
• M2: 480,209 km (0.108 R)
• M3: 813,513 km (0.082 R)
• M4: 1,348,475 km (0.067 R)
• M5: 2,457,444 km (0.071 R)
• M6: 2,961,290 km (0.092 R)
• M7: 3,310,302 km (0.119 R)
• M8: 5,388,366 km (0.092 R)
• M9: 6,469,360 km (0.083 R)
• M10: 7,122,504 km (0.11 R)
• M11: 7,657,017 km (0.097 R)
• M12: 8,285,628 km (0.119 R)
• M13: 9,496,473 km (0.115 R)
• M14: 9,912,355 km (0.072 R)
• M15: 10,419,492 km (0.084 R)
• M16: 12,533,459 km (0.104 R)
• M17: 17,367,116 km (0.05 R)
• M18: 20,071,546 km (0.08 R)
• M19: 20,947,591 km (0.1 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 244.1

Radius: 7.9

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 6.1 AU - 7.96 AU

Year: 11851 Days

Day: 16 Hours

Environment

Temp: -222 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 84,148,304 km

• M1: 110,702 km (0.087 R)
• M2: 434,881 km (0.054 R)
• M3: 2,148,375 km (0.114 R)
• M4: 3,116,273 km (0.094 R)
• M5: 3,989,177 km (0.081 R)
• M6: 6,209,209 km (0.097 R)
• M7: 8,799,197 km (0.096 R)
• M8: 11,412,971 km (0.115 R)
• M9: 14,031,532 km (0.055 R)
• M10: 17,495,321 km (0.104 R)
• M11: 23,740,434 km (0.102 R)
• M12: 25,267,080 km (0.096 R)
• M13: 35,389,171 km (0.075 R)
• M14: 36,818,280 km (0.111 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 947.7

Radius: 5.3

Gravity: 33.74 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 9.23 AU - 10.55 AU

Year: 19776 Days

Day: 17.3 Hours

Environment

Temp: -239 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 84,148,304 km

• M1: 65,973 km (0.114 R)
• M2: 338,540 km (0.087 R)
• M3: 540,048 km (0.091 R)
• M4: 844,630 km (0.095 R)
• M5: 1,272,330 km (0.069 R)
• M6: 2,032,885 km (0.033 R)
• M7: 3,670,982 km (0.078 R)
• M8: 5,208,699 km (0.116 R)
• M9: 6,939,396 km (0.119 R)
• M10: 7,425,440 km (0.113 R)
• M11: 7,830,551 km (0.093 R)
• M12: 8,465,594 km (0.094 R)
• M13: 9,020,452 km (0.039 R)
• M14: 11,888,543 km (0.083 R)
• M15: 12,302,480 km (0.057 R)
• M16: 12,941,413 km (0.111 R)
• M17: 14,131,613 km (0.075 R)
• M18: 14,753,192 km (0.105 R)
• M19: 16,556,445 km (0.067 R)
• M20: 16,727,286 km (0.092 R)
• M21: 20,105,056 km (0.056 R)
• M22: 22,628,324 km (0.073 R)
• M23: 31,058,762 km (0.097 R)
• M24: 34,693,691 km (0.084 R)
• M25: 35,396,502 km (0.094 R)
• M26: 38,752,132 km (0.086 R)
• M27: 40,121,102 km (0.103 R)
• M28: 40,895,271 km (0.092 R)
• M29: 44,092,028 km (0.069 R)
• M30: 46,087,813 km (0.085 R)
• M31: 48,143,138 km (0.12 R)
• M32: 48,841,610 km (0.053 R)
• M33: 49,193,315 km (0.103 R)
• M34: 55,817,210 km (0.108 R)
• M35: 60,954,251 km (0.036 R)
• M36: 62,389,194 km (0.063 R)
• M37: 73,530,645 km (0.078 R)
• M38: 74,689,280 km (0.067 R)
• M39: 81,157,443 km (0.075 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 395 - 13,419 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit