🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.86

Radius: 0.94

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.65 AU - 0.67 AU

Year: 352 Days

Day: 26.3 Hours

Environment

Temp: -134 °C

Axial Tilt: 23.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 645.6

Radius: 10.1

Gravity: 6.33 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.82 AU - 1.04 AU

Year: 588 Days

Day: 7.8 Hours

Environment

Temp: -150 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 77,794,723 km

• M1: 126,111 km (0.077 R)
• M2: 479,312 km (0.102 R)
• M3: 859,889 km (0.081 R)
• M4: 1,552,527 km (0.055 R)
• M5: 1,947,764 km (0.065 R)
• M6: 2,350,631 km (0.096 R)
• M7: 3,048,206 km (0.039 R)
• M8: 4,444,702 km (0.048 R)
• M9: 4,900,826 km (0.071 R)
• M10: 5,250,586 km (0.032 R)
• M11: 5,797,366 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 815.8

Radius: 9.8

Gravity: 8.49 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 1.11 AU - 1.85 AU

Year: 1181 Days

Day: 13 Hours

Environment

Temp: -178 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 77,794,723 km

• M1: 121,922 km (0.074 R)
• M2: 448,794 km (0.052 R)
• M3: 775,964 km (0.09 R)
• M4: 1,125,574 km (0.053 R)
• M5: 1,555,219 km (0.102 R)
• M6: 1,924,726 km (0.08 R)
• M7: 2,329,239 km (0.099 R)
• M8: 2,672,566 km (0.107 R)
• M9: 3,164,145 km (0.1 R)
• M10: 3,540,383 km (0.104 R)
• M11: 3,980,051 km (0.077 R)
• M12: 4,383,068 km (0.096 R)
• M13: 6,229,255 km (0.07 R)
• M14: 7,611,091 km (0.108 R)
• M15: 8,013,659 km (0.095 R)
• M16: 10,569,688 km (0.115 R)
• M17: 11,276,538 km (0.034 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 569.9

Radius: 13.6

Gravity: 3.08 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 2.69 AU - 3.79 AU

Year: 3826 Days

Day: 14.4 Hours

Environment

Temp: -198 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 77,794,723 km

• M1: 169,943 km (0.109 R)
• M2: 865,124 km (0.086 R)
• M3: 1,590,076 km (0.048 R)
• M4: 2,261,920 km (0.082 R)
• M5: 2,843,706 km (0.063 R)
• M6: 3,485,930 km (0.053 R)
• M7: 5,239,067 km (0.095 R)
• M8: 6,677,301 km (0.099 R)
• M9: 7,952,174 km (0.099 R)
• M10: 9,689,454 km (0.092 R)
• M11: 12,520,743 km (0.066 R)
• M12: 14,401,787 km (0.06 R)
• M13: 15,542,770 km (0.075 R)
• M14: 19,082,405 km (0.116 R)
• M15: 22,100,542 km (0.06 R)
• M16: 23,057,969 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 416.8

Radius: 10.3

Gravity: 3.93 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 3.67 AU - 3.81 AU

Year: 4745 Days

Day: 11.7 Hours

Environment

Temp: -216 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 77,794,723 km

• M1: 128,056 km (0.096 R)
• M2: 451,187 km (0.104 R)
• M3: 1,274,873 km (0.067 R)
• M4: 2,308,894 km (0.054 R)
• M5: 2,647,733 km (0.12 R)
• M6: 3,020,082 km (0.058 R)
• M7: 3,388,841 km (0.11 R)
• M8: 4,444,852 km (0.092 R)
• M9: 4,899,330 km (0.099 R)
• M10: 6,043,305 km (0.09 R)
• M11: 6,878,660 km (0.118 R)
• M12: 7,227,223 km (0.058 R)
• M13: 9,495,426 km (0.088 R)
• M14: 11,219,541 km (0.057 R)
• M15: 12,619,478 km (0.065 R)
• M16: 13,582,290 km (0.065 R)
• M17: 14,697,392 km (0.118 R)
• M18: 15,223,977 km (0.117 R)
• M19: 15,545,912 km (0.088 R)
• M20: 19,144,488 km (0.09 R)
• M21: 19,963,836 km (0.099 R)
• M22: 22,771,339 km (0.109 R)
• M23: 23,263,516 km (0.082 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 934.3

Radius: 5.3

Gravity: 33.26 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 6.56 AU - 8.46 AU

Year: 13501 Days

Day: 17.2 Hours

Environment

Temp: -224 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 77,794,723 km

• M1: 66,122 km (0.09 R)
• M2: 438,023 km (0.106 R)
• M3: 1,400,386 km (0.067 R)
• M4: 1,681,031 km (0.113 R)
• M5: 2,272,242 km (0.027 R)
• M6: 4,906,361 km (0.045 R)
• M7: 8,978,116 km (0.039 R)
• M8: 9,943,770 km (0.089 R)
• M9: 10,394,359 km (0.081 R)
• M10: 10,566,846 km (0.086 R)
• M11: 16,675,525 km (0.055 R)
• M12: 22,507,299 km (0.072 R)
• M13: 24,177,409 km (0.114 R)
• M14: 25,094,145 km (0.115 R)
• M15: 28,094,630 km (0.112 R)
• M16: 28,993,863 km (0.069 R)
• M17: 36,889,638 km (0.043 R)
• M18: 40,468,618 km (0.087 R)
• M19: 51,240,412 km (0.045 R)
• M20: 57,457,849 km (0.109 R)
• M21: 58,178,313 km (0.054 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.71 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 743.3

Radius: 3.8

Gravity: 51.48 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 8.09 AU - 11.33 AU

Year: 19849 Days

Day: 23.7 Hours

Environment

Temp: -240 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 77,794,723 km

• M1: 47,273 km (0.113 R)
• M2: 436,078 km (0.085 R)
• M3: 809,175 km (0.113 R)
• M4: 993,180 km (0.095 R)
• M5: 1,218,923 km (0.087 R)
• M6: 2,691,565 km (0.087 R)
• M7: 2,944,086 km (0.116 R)
• M8: 3,076,181 km (0.115 R)
• M9: 3,323,915 km (0.072 R)
• M10: 4,518,753 km (0.09 R)
• M11: 5,060,447 km (0.094 R)
• M12: 6,142,937 km (0.092 R)
• M13: 7,467,776 km (0.096 R)
• M14: 7,814,095 km (0.101 R)
• M15: 9,477,025 km (0.1 R)
• M16: 12,702,355 km (0.057 R)
• M17: 14,294,525 km (0.101 R)
• M18: 18,308,984 km (0.057 R)
• M19: 19,119,805 km (0.115 R)
• M20: 19,673,466 km (0.074 R)
• M21: 21,497,364 km (0.097 R)
• M22: 21,695,730 km (0.094 R)
• M23: 22,603,191 km (0.116 R)
• M24: 26,373,207 km (0.111 R)
• M25: 37,944,752 km (0.103 R)
• M26: 50,192,180 km (0.11 R)
• M27: 52,849,487 km (0.1 R)
• M28: 59,802,048 km (0.117 R)
• M29: 61,780,480 km (0.106 R)
• M30: 63,802,145 km (0.056 R)
• M31: 69,480,133 km (0.089 R)
• M32: 69,696,601 km (0.116 R)
• M33: 75,714,325 km (0.049 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 232 - 14,658 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit