🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.37

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.53 AU - 0.55 AU

Year: 260 Days

Day: 45.4 Hours

Environment

Temp: -115 °C

Axial Tilt: 80.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 174.7

Radius: 12.4

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 0.6 AU - 0.76 AU

Year: 368 Days

Day: 6.4 Hours

Environment

Temp: -127 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 45,901,038 km

• M1: 154,235 km (0.096 R)
• M2: 555,158 km (0.075 R)
• M3: 1,035,217 km (0.035 R)
• M4: 1,422,825 km (0.117 R)
• M5: 1,833,920 km (0.095 R)
• M6: 2,603,601 km (0.036 R)
• M7: 3,191,970 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 692.4

Radius: 14.9

Gravity: 3.12 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.79 AU - 0.97 AU

Year: 542 Days

Day: 5.9 Hours

Environment

Temp: -148 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 45,901,038 km

• M1: 185,352 km (0.075 R)
• M2: 725,550 km (0.088 R)
• M3: 1,343,239 km (0.107 R)
• M4: 2,138,053 km (0.079 R)
• M5: 2,878,413 km (0.045 R)
• M6: 3,377,172 km (0.113 R)
• M7: 4,058,141 km (0.095 R)
• M8: 4,751,378 km (0.106 R)
• M9: 5,334,959 km (0.101 R)
• M10: 6,021,165 km (0.077 R)
• M11: 6,530,246 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 178.4

Radius: 14.2

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 0.89 AU - 1.49 AU

Year: 852 Days

Day: 6.4 Hours

Environment

Temp: -170 °C

Axial Tilt: 46.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 45,901,038 km

• M1: 176,525 km (0.06 R)
• M2: 895,194 km (0.088 R)
• M3: 1,468,602 km (0.073 R)
• M4: 3,620,268 km (0.12 R)
• M5: 4,093,895 km (0.077 R)
• M6: 4,551,366 km (0.113 R)
• M7: 5,488,147 km (0.08 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 394.2

Radius: 10.1

Gravity: 3.86 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.72 AU - 1.88 AU

Year: 1584 Days

Day: 14.9 Hours

Environment

Temp: -181 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 45,901,038 km

• M1: 126,560 km (0.085 R)
• M2: 456,423 km (0.119 R)
• M3: 805,285 km (0.096 R)
• M4: 1,242,261 km (0.087 R)
• M5: 1,657,395 km (0.063 R)
• M6: 2,046,798 km (0.108 R)
• M7: 2,378,606 km (0.072 R)
• M8: 3,676,966 km (0.075 R)
• M9: 4,489,731 km (0.104 R)
• M10: 8,404,259 km (0.11 R)
• M11: 9,324,286 km (0.105 R)
• M12: 11,262,326 km (0.076 R)
• M13: 11,638,565 km (0.054 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 734.8

Radius: 12.3

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.89 AU - 2.77 AU

Year: 2333 Days

Day: 8.1 Hours

Environment

Temp: -194 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 45,901,038 km

• M1: 153,936 km (0.06 R)
• M2: 544,985 km (0.097 R)
• M3: 978,071 km (0.119 R)
• M4: 2,031,389 km (0.071 R)
• M5: 4,591,159 km (0.119 R)
• M6: 6,344,296 km (0.104 R)
• M7: 7,152,125 km (0.029 R)
• M8: 7,871,541 km (0.116 R)
• M9: 9,845,933 km (0.045 R)
• M10: 11,006,364 km (0.064 R)
• M11: 11,640,061 km (0.089 R)
• M12: 12,255,955 km (0.038 R)
• M13: 13,732,935 km (0.113 R)
• M14: 17,778,510 km (0.084 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 395.2

Radius: 9.6

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 3.55 AU - 5.23 AU

Year: 6034 Days

Day: 8.7 Hours

Environment

Temp: -212 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 45,901,038 km

• M1: 119,379 km (0.107 R)
• M2: 516,561 km (0.068 R)
• M3: 924,365 km (0.116 R)
• M4: 1,545,047 km (0.056 R)
• M5: 2,653,567 km (0.094 R)
• M6: 3,218,299 km (0.094 R)
• M7: 3,927,692 km (0.097 R)
• M8: 4,687,350 km (0.095 R)
• M9: 5,129,113 km (0.086 R)
• M10: 6,591,432 km (0.045 R)
• M11: 7,804,222 km (0.081 R)
• M12: 8,202,900 km (0.111 R)
• M13: 9,810,030 km (0.112 R)
• M14: 10,754,142 km (0.101 R)
• M15: 12,476,911 km (0.056 R)
• M16: 13,327,076 km (0.099 R)
• M17: 17,057,299 km (0.091 R)
• M18: 19,193,108 km (0.105 R)
• M19: 22,070,174 km (0.082 R)
• M20: 22,722,121 km (0.09 R)
• M21: 25,696,725 km (0.042 R)
• M22: 26,906,673 km (0.039 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 231.7

Radius: 3.7

Gravity: 16.92 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 6.38 AU - 6.48 AU

Year: 10696 Days

Day: 23.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 20.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 45,901,038 km

• M1: 46,076 km (0.053 R)
• M2: 281,543 km (0.032 R)
• M3: 407,355 km (0.04 R)
• M4: 604,226 km (0.074 R)
• M5: 725,101 km (0.118 R)
• M6: 888,013 km (0.107 R)
• M7: 1,045,540 km (0.081 R)
• M8: 2,067,891 km (0.113 R)
• M9: 2,346,293 km (0.114 R)
• M10: 3,058,229 km (0.091 R)
• M11: 3,714,216 km (0.112 R)
• M12: 4,149,995 km (0.071 R)
• M13: 4,592,206 km (0.111 R)
• M14: 4,950,942 km (0.083 R)
• M15: 5,387,767 km (0.117 R)
• M16: 8,685,802 km (0.114 R)
• M17: 8,977,967 km (0.115 R)
• M18: 9,105,125 km (0.113 R)
• M19: 10,029,490 km (0.096 R)
• M20: 11,063,062 km (0.08 R)
• M21: 11,258,287 km (0.099 R)
• M22: 14,239,174 km (0.103 R)
• M23: 15,238,638 km (0.101 R)
• M24: 15,480,388 km (0.119 R)
• M25: 17,049,819 km (0.114 R)
• M26: 18,791,437 km (0.106 R)
• M27: 19,920,153 km (0.064 R)
• M28: 21,167,949 km (0.112 R)
• M29: 23,415,358 km (0.117 R)
• M30: 27,298,320 km (0.071 R)
• M31: 28,104,952 km (0.117 R)
• M32: 28,560,029 km (0.059 R)
• M33: 34,409,156 km (0.079 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 213

Radius: 3.7

Gravity: 15.56 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 8.57 AU - 8.81 AU

Year: 16805 Days

Day: 23.6 Hours

Environment

Temp: -224 °C

Axial Tilt: 137.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 45,901,038 km

• M1: 46,525 km (0.086 R)
• M2: 220,058 km (0.063 R)
• M3: 370,554 km (0.117 R)
• M4: 704,008 km (0.091 R)
• M5: 989,291 km (0.081 R)
• M6: 1,308,981 km (0.031 R)
• M7: 2,045,900 km (0.09 R)
• M8: 2,239,331 km (0.115 R)
• M9: 5,085,580 km (0.085 R)
• M10: 8,012,911 km (0.097 R)
• M11: 9,608,073 km (0.118 R)
• M12: 12,179,660 km (0.117 R)
• M13: 13,530,978 km (0.097 R)
• M14: 15,044,459 km (0.075 R)
• M15: 16,113,785 km (0.045 R)
• M16: 31,082,398 km (0.065 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 286 - 15,897 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit