🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.5 AU - 0.84 AU

Year: 360 Days

Day: 42.2 Hours

Environment

Temp: -135 °C

Axial Tilt: 1.1 °

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: 279.9

Radius: 10.7

Gravity: 2.44 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.59 AU - 0.77 AU

Year: 368 Days

Day: 6.4 Hours

Environment

Temp: -134 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 87,180,422 km

• M1: 134,339 km (0.067 R)
• M2: 591,360 km (0.081 R)
• M3: 937,829 km (0.111 R)
• M4: 2,108,582 km (0.079 R)
• M5: 3,699,705 km (0.081 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 468.1

Radius: 13.2

Gravity: 2.69 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.91 AU - 0.95 AU

Year: 588 Days

Day: 11.6 Hours

Environment

Temp: -163 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 87,180,422 km

• M1: 165,754 km (0.087 R)
• M2: 577,448 km (0.099 R)
• M3: 1,034,020 km (0.109 R)
• M4: 1,772,585 km (0.107 R)
• M5: 2,190,562 km (0.064 R)
• M6: 2,842,060 km (0.088 R)
• M7: 3,557,587 km (0.069 R)
• M8: 4,433,632 km (0.104 R)
• M9: 5,217,824 km (0.085 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 823.5

Radius: 10.2

Gravity: 7.92 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 1.25 AU - 1.57 AU

Year: 1098 Days

Day: 6.5 Hours

Environment

Temp: -170 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 87,180,422 km

• M1: 126,859 km (0.041 R)
• M2: 509,231 km (0.088 R)
• M3: 834,008 km (0.04 R)
• M4: 1,215,931 km (0.112 R)
• M5: 1,580,801 km (0.083 R)
• M6: 2,157,351 km (0.1 R)
• M7: 2,649,378 km (0.026 R)
• M8: 3,405,895 km (0.086 R)
• M9: 5,529,736 km (0.088 R)
• M10: 6,409,072 km (0.058 R)
• M11: 7,353,633 km (0.106 R)
• M12: 8,443,902 km (0.078 R)
• M13: 10,071,377 km (0.107 R)
• M14: 11,009,207 km (0.065 R)
• M15: 11,345,802 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 186.6

Radius: 11

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 2.05 AU - 2.55 AU

Year: 2288 Days

Day: 10.1 Hours

Environment

Temp: -199 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 87,180,422 km

• M1: 136,882 km (0.094 R)
• M2: 782,247 km (0.11 R)
• M3: 1,240,466 km (0.078 R)
• M4: 2,027,350 km (0.06 R)
• M5: 3,591,845 km (0.117 R)
• M6: 4,043,331 km (0.068 R)
• M7: 6,969,914 km (0.069 R)
• M8: 10,363,991 km (0.072 R)
• M9: 10,817,123 km (0.118 R)
• M10: 11,418,955 km (0.075 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 14.1

Radius: 11.6

Gravity: 0.1 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 4.06 AU - 5.04 AU

Year: 6367 Days

Day: 5.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 87,180,422 km

• M1: 146,157 km (0.102 R)
• M2: 1,203,515 km (0.09 R)
• M3: 2,550,644 km (0.119 R)
• M4: 4,168,844 km (0.065 R)
• M5: 4,637,235 km (0.096 R)
• M6: 5,502,808 km (0.116 R)
• M7: 6,026,251 km (0.095 R)
• M8: 8,804,882 km (0.105 R)
• M9: 9,522,353 km (0.069 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 243

Radius: 4.5

Gravity: 12 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 4.72 AU - 7.44 AU

Year: 9835 Days

Day: 16.6 Hours

Environment

Temp: -212 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 87,180,422 km

• M1: 55,950 km (0.06 R)
• M2: 220,507 km (0.061 R)
• M3: 370,704 km (0.091 R)
• M4: 519,105 km (0.114 R)
• M5: 856,298 km (0.058 R)
• M6: 1,034,768 km (0.12 R)
• M7: 1,206,058 km (0.109 R)
• M8: 1,879,697 km (0.045 R)
• M9: 2,682,589 km (0.103 R)
• M10: 2,909,679 km (0.061 R)
• M11: 4,193,528 km (0.097 R)
• M12: 6,034,329 km (0.076 R)
• M13: 6,260,072 km (0.04 R)
• M14: 8,962,109 km (0.088 R)
• M15: 9,384,125 km (0.089 R)
• M16: 11,061,267 km (0.061 R)
• M17: 15,953,865 km (0.047 R)
• M18: 16,888,852 km (0.046 R)
• M19: 18,527,247 km (0.078 R)
• M20: 19,073,280 km (0.114 R)
• M21: 21,813,614 km (0.084 R)
• M22: 24,234,705 km (0.084 R)
• M23: 26,057,705 km (0.031 R)
• M24: 27,792,592 km (0.117 R)
• M25: 29,326,568 km (0.091 R)
• M26: 32,169,526 km (0.108 R)
• M27: 33,256,355 km (0.12 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 862.6

Radius: 4.8

Gravity: 37.44 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 6.24 AU - 7.2 AU

Year: 11428 Days

Day: 23.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 87,180,422 km

• M1: 60,288 km (0.112 R)
• M2: 242,947 km (0.113 R)
• M3: 465,997 km (0.092 R)
• M4: 2,696,651 km (0.086 R)
• M5: 3,161,003 km (0.088 R)
• M6: 4,217,164 km (0.041 R)
• M7: 4,490,928 km (0.092 R)
• M8: 4,973,381 km (0.06 R)
• M9: 5,561,002 km (0.037 R)
• M10: 7,166,935 km (0.118 R)
• M11: 8,006,628 km (0.057 R)
• M12: 8,379,126 km (0.066 R)
• M13: 9,309,924 km (0.1 R)
• M14: 9,932,102 km (0.099 R)
• M15: 15,296,233 km (0.077 R)
• M16: 16,830,957 km (0.101 R)
• M17: 18,385,429 km (0.079 R)
• M18: 18,951,357 km (0.073 R)
• M19: 27,191,358 km (0.062 R)
• M20: 27,399,748 km (0.093 R)
• M21: 27,714,352 km (0.037 R)
• M22: 32,727,825 km (0.052 R)
• M23: 36,386,092 km (0.076 R)
• M24: 41,124,455 km (0.115 R)
• M25: 45,082,216 km (0.114 R)
• M26: 49,751,764 km (0.106 R)
• M27: 50,533,862 km (0.079 R)
• M28: 53,091,686 km (0.106 R)
• M29: 56,408,720 km (0.12 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 826.5

Radius: 6.2

Gravity: 21.5 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 7.13 AU - 9.77 AU

Year: 16114 Days

Day: 19.8 Hours

Environment

Temp: -236 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 87,180,422 km

• M1: 78,838 km (0.075 R)
• M2: 358,736 km (0.059 R)
• M3: 671,844 km (0.108 R)
• M4: 1,184,965 km (0.086 R)
• M5: 3,291,602 km (0.056 R)
• M6: 5,084,532 km (0.114 R)
• M7: 5,455,236 km (0.082 R)
• M8: 6,807,900 km (0.117 R)
• M9: 7,585,510 km (0.115 R)
• M10: 7,825,165 km (0.082 R)
• M11: 13,257,662 km (0.054 R)
• M12: 14,031,383 km (0.106 R)
• M13: 17,346,322 km (0.036 R)
• M14: 19,764,721 km (0.034 R)
• M15: 20,866,809 km (0.093 R)
• M16: 21,623,774 km (0.084 R)
• M17: 22,497,276 km (0.05 R)
• M18: 24,417,963 km (0.099 R)
• M19: 26,555,118 km (0.071 R)
• M20: 27,556,227 km (0.109 R)
• M21: 37,309,859 km (0.096 R)
• M22: 41,453,720 km (0.086 R)
• M23: 45,420,906 km (0.072 R)
• M24: 56,612,322 km (0.119 R)
• M25: 57,344,155 km (0.054 R)
• M26: 60,144,777 km (0.098 R)
• M27: 60,524,905 km (0.061 R)
• M28: 61,098,164 km (0.092 R)
• M29: 63,624,124 km (0.066 R)
• M30: 64,813,128 km (0.05 R)
• M31: 67,850,413 km (0.104 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 858.8

Radius: 5.8

Gravity: 25.53 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 9.27 AU - 11.47 AU

Year: 21907 Days

Day: 21.2 Hours

Environment

Temp: -239 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 87,180,422 km

• M1: 86,617 km (0.11 R)
• M2: 415,732 km (0.07 R)
• M3: 1,132,007 km (0.068 R)
• M4: 1,368,970 km (0.105 R)
• M5: 2,692,313 km (0.055 R)
• M6: 3,936,369 km (0.042 R)
• M7: 5,815,916 km (0.096 R)
• M8: 6,525,758 km (0.086 R)
• M9: 8,440,761 km (0.108 R)
• M10: 9,231,984 km (0.092 R)
• M11: 9,526,093 km (0.115 R)
• M12: 9,826,486 km (0.106 R)
• M13: 14,723,422 km (0.092 R)
• M14: 16,460,104 km (0.109 R)
• M15: 17,422,018 km (0.107 R)
• M16: 18,144,875 km (0.101 R)
• M17: 22,270,785 km (0.103 R)
• M18: 22,907,024 km (0.116 R)
• M19: 25,804,586 km (0.084 R)
• M20: 26,037,210 km (0.11 R)
• M21: 26,981,322 km (0.049 R)
• M22: 27,461,831 km (0.053 R)
• M23: 28,439,902 km (0.118 R)
• M24: 28,687,935 km (0.096 R)
• M25: 29,950,242 km (0.111 R)
• M26: 39,530,938 km (0.058 R)
• M27: 40,306,603 km (0.117 R)
• M28: 42,694,484 km (0.11 R)
• M29: 50,785,036 km (0.112 R)
• M30: 53,190,720 km (0.118 R)
• M31: 58,628,154 km (0.107 R)
• M32: 61,688,028 km (0.096 R)
• M33: 65,282,566 km (0.094 R)
• M34: 69,687,176 km (0.083 R)
• M35: 73,117,754 km (0.062 R)
• M36: 74,992,665 km (0.109 R)
• M37: 82,813,043 km (0.034 R)
• M38: 84,593,258 km (0.067 R)
• M39: 86,139,352 km (0.105 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 195 - 12,718 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit