🌌 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: 4.32

Radius: 1.8

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.52 AU - 0.64 AU

Year: 285 Days

Day: 39.4 Hours

Environment

Temp: -135 °C

Axial Tilt: 38.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 62,681,149 km

• M1: 64,925 km (0.076 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 297.9

Radius: 9.6

Gravity: 3.23 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.76 AU - 0.92 AU

Year: 497 Days

Day: 7.5 Hours

Environment

Temp: -139 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 62,681,149 km

• M1: 119,379 km (0.047 R)
• M2: 432,936 km (0.092 R)
• M3: 743,651 km (0.099 R)
• M4: 1,180,178 km (0.068 R)
• M5: 1,819,409 km (0.09 R)
• M6: 2,297,823 km (0.113 R)
• M7: 2,760,530 km (0.105 R)
• M8: 3,061,221 km (0.103 R)
• M9: 3,485,032 km (0.08 R)
• M10: 4,149,097 km (0.12 R)
• M11: 4,795,659 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 429.9

Radius: 10.6

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 2.07 AU - 3.41 AU

Year: 2928 Days

Day: 11.5 Hours

Environment

Temp: -195 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 62,681,149 km

• M1: 132,095 km (0.089 R)
• M2: 607,218 km (0.098 R)
• M3: 984,055 km (0.113 R)
• M4: 1,491,640 km (0.039 R)
• M5: 1,891,964 km (0.106 R)
• M6: 2,701,887 km (0.114 R)
• M7: 3,088,448 km (0.092 R)
• M8: 4,012,364 km (0.104 R)
• M9: 4,413,586 km (0.106 R)
• M10: 5,111,310 km (0.093 R)
• M11: 5,511,036 km (0.099 R)
• M12: 6,809,545 km (0.11 R)
• M13: 7,471,217 km (0.109 R)
• M14: 8,756,263 km (0.062 R)
• M15: 9,192,939 km (0.094 R)
• M16: 11,009,954 km (0.055 R)
• M17: 11,880,913 km (0.057 R)
• M18: 12,416,773 km (0.055 R)
• M19: 13,141,724 km (0.094 R)
• M20: 14,030,485 km (0.108 R)
• M21: 14,397,000 km (0.104 R)
• M22: 14,864,194 km (0.116 R)
• M23: 16,276,398 km (0.105 R)
• M24: 17,990,042 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 831.6

Radius: 13.8

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 2.76 AU - 4.32 AU

Year: 4301 Days

Day: 6.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 62,681,149 km

• M1: 171,589 km (0.063 R)
• M2: 674,836 km (0.087 R)
• M3: 1,340,397 km (0.119 R)
• M4: 1,850,226 km (0.09 R)
• M5: 2,442,335 km (0.097 R)
• M6: 3,102,361 km (0.052 R)
• M7: 3,813,549 km (0.106 R)
• M8: 4,458,914 km (0.104 R)
• M9: 5,535,121 km (0.096 R)
• M10: 6,810,293 km (0.107 R)
• M11: 7,310,399 km (0.064 R)
• M12: 7,979,251 km (0.102 R)
• M13: 9,936,141 km (0.113 R)
• M14: 10,891,623 km (0.061 R)
• M15: 11,438,104 km (0.104 R)
• M16: 12,438,764 km (0.075 R)
• M17: 13,915,444 km (0.108 R)
• M18: 14,614,066 km (0.099 R)
• M19: 16,434,074 km (0.093 R)
• M20: 17,276,011 km (0.084 R)
• M21: 22,723,617 km (0.111 R)
• M22: 23,844,853 km (0.059 R)
• M23: 24,690,231 km (0.108 R)
• M24: 25,159,669 km (0.069 R)
• M25: 28,615,081 km (0.08 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 232.9

Radius: 13.5

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 3.28 AU - 4.8 AU

Year: 5243 Days

Day: 5.8 Hours

Environment

Temp: -220 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 62,681,149 km

• M1: 167,849 km (0.027 R)
• M2: 602,281 km (0.111 R)
• M3: 1,149,959 km (0.092 R)
• M4: 1,872,068 km (0.115 R)
• M5: 3,238,046 km (0.12 R)
• M6: 3,877,876 km (0.116 R)
• M7: 4,601,032 km (0.119 R)
• M8: 5,091,414 km (0.092 R)
• M9: 6,688,970 km (0.105 R)
• M10: 7,571,597 km (0.029 R)
• M11: 8,291,761 km (0.096 R)
• M12: 9,869,420 km (0.077 R)
• M13: 11,809,854 km (0.049 R)
• M14: 12,599,432 km (0.11 R)
• M15: 13,377,042 km (0.093 R)
• M16: 14,283,904 km (0.083 R)
• M17: 15,384,645 km (0.107 R)
• M18: 17,981,963 km (0.1 R)
• M19: 18,791,437 km (0.04 R)
• M20: 20,174,170 km (0.11 R)
• M21: 21,302,886 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 267.1

Radius: 14.9

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 3.87 AU - 4.51 AU

Year: 5538 Days

Day: 14.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 46.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 62,681,149 km

• M1: 185,352 km (0.12 R)
• M2: 1,089,970 km (0.116 R)
• M3: 1,718,730 km (0.08 R)
• M4: 2,696,352 km (0.11 R)
• M5: 3,594,986 km (0.066 R)
• M6: 4,875,993 km (0.076 R)
• M7: 5,769,242 km (0.076 R)
• M8: 7,848,652 km (0.101 R)
• M9: 8,395,133 km (0.066 R)
• M10: 11,649,485 km (0.081 R)
• M11: 13,103,577 km (0.076 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 507.5

Radius: 14.9

Gravity: 2.29 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 4.88 AU - 6.5 AU

Year: 8764 Days

Day: 14.4 Hours

Environment

Temp: -221 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 62,681,149 km

• M1: 196,721 km (0.092 R)
• M2: 795,711 km (0.097 R)
• M3: 2,014,485 km (0.078 R)
• M4: 3,156,365 km (0.067 R)
• M5: 4,316,048 km (0.111 R)
• M6: 5,156,788 km (0.107 R)
• M7: 8,513,016 km (0.099 R)
• M8: 9,158,830 km (0.086 R)
• M9: 11,499,588 km (0.105 R)
• M10: 12,781,343 km (0.056 R)
• M11: 13,285,936 km (0.029 R)
• M12: 14,038,264 km (0.076 R)
• M13: 19,900,107 km (0.098 R)
• M14: 39,719,581 km (0.065 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 944.5

Radius: 6.5

Gravity: 22.36 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 6.4 AU - 8.2 AU

Year: 12735 Days

Day: 17.3 Hours

Environment

Temp: -232 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 62,681,149 km

• M1: 80,783 km (0.039 R)
• M2: 346,917 km (0.114 R)
• M3: 552,166 km (0.102 R)
• M4: 935,435 km (0.117 R)
• M5: 1,206,656 km (0.071 R)
• M6: 1,440,328 km (0.117 R)
• M7: 1,687,913 km (0.087 R)
• M8: 1,945,820 km (0.119 R)
• M9: 2,371,725 km (0.088 R)
• M10: 2,881,554 km (0.06 R)
• M11: 3,355,630 km (0.07 R)
• M12: 3,737,404 km (0.069 R)
• M13: 3,968,233 km (0.099 R)
• M14: 4,620,031 km (0.089 R)
• M15: 4,886,315 km (0.115 R)
• M16: 5,413,349 km (0.071 R)
• M17: 8,287,572 km (0.073 R)
• M18: 8,631,498 km (0.057 R)
• M19: 11,371,533 km (0.083 R)
• M20: 11,919,809 km (0.079 R)
• M21: 12,231,870 km (0.071 R)
• M22: 13,806,387 km (0.08 R)
• M23: 15,145,139 km (0.115 R)
• M24: 15,511,354 km (0.116 R)
• M25: 18,160,134 km (0.103 R)
• M26: 20,735,162 km (0.116 R)
• M27: 26,915,200 km (0.074 R)
• M28: 33,969,039 km (0.081 R)
• M29: 38,389,656 km (0.089 R)
• M30: 40,596,673 km (0.099 R)
• M31: 46,174,280 km (0.068 R)
• M32: 47,566,289 km (0.119 R)
• M33: 49,465,583 km (0.057 R)
• M34: 50,271,616 km (0.113 R)
• M35: 54,948,046 km (0.073 R)
• M36: 58,102,467 km (0.102 R)
• M37: 60,638,001 km (0.061 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 408 - 12,508 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit