🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.45

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.58 AU - 0.68 AU

Year: 323 Days

Day: 19.1 Hours

Environment

Temp: -129 °C

Axial Tilt: 13.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 947.5

Radius: 8.9

Gravity: 11.96 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 0.8 AU - 1 AU

Year: 551 Days

Day: 12 Hours

Environment

Temp: -146 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 90,742,889 km

• M1: 110,702 km (0.071 R)
• M2: 542,442 km (0.107 R)
• M3: 912,547 km (0.096 R)
• M4: 1,530,237 km (0.119 R)
• M5: 2,100,205 km (0.118 R)
• M6: 3,314,790 km (0.1 R)
• M7: 4,118,280 km (0.064 R)
• M8: 4,408,051 km (0.114 R)
• M9: 4,927,006 km (0.061 R)
• M10: 5,933,052 km (0.118 R)
• M11: 6,484,619 km (0.049 R)
• M12: 6,836,024 km (0.116 R)
• M13: 7,464,784 km (0.044 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 239.4

Radius: 11.9

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.14 AU - 1.46 AU

Year: 957 Days

Day: 6.8 Hours

Environment

Temp: -163 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 90,742,889 km

• M1: 148,401 km (0.042 R)
• M2: 548,875 km (0.116 R)
• M3: 1,028,186 km (0.084 R)
• M4: 1,402,031 km (0.064 R)
• M5: 2,654,913 km (0.078 R)
• M6: 3,796,345 km (0.071 R)
• M7: 4,593,253 km (0.088 R)
• M8: 5,675,294 km (0.117 R)
• M9: 6,152,960 km (0.093 R)

Planet 4 - Ice Giant

Semi-Major Axis: 8.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 342.5

Radius: 7

Gravity: 6.99 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 6.59 AU - 10.81 AU

Year: 16569 Days

Day: 24.8 Hours

Environment

Temp: -218 °C

Axial Tilt: 21.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 90,742,889 km

• M1: 122,072 km (0.079 R)
• M2: 623,075 km (0.108 R)
• M3: 1,596,060 km (0.117 R)
• M4: 1,879,248 km (0.082 R)
• M5: 2,936,756 km (0.111 R)
• M6: 5,163,071 km (0.07 R)
• M7: 15,307,602 km (0.083 R)
• M8: 17,106,517 km (0.109 R)
• M9: 20,020,533 km (0.081 R)
• M10: 25,715,575 km (0.108 R)
• M11: 26,408,213 km (0.097 R)
• M12: 31,947,972 km (0.089 R)
• M13: 32,748,320 km (0.107 R)
• M14: 34,269,880 km (0.029 R)
• M15: 40,032,540 km (0.072 R)
• M16: 45,973,819 km (0.111 R)
• M17: 46,408,850 km (0.111 R)

Planet 5 - Ice Giant

Semi-Major Axis: 10.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 954.9

Radius: 4.8

Gravity: 41.45 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 9.09 AU - 10.99 AU

Year: 20541 Days

Day: 20 Hours

Environment

Temp: -225 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 90,742,889 km

• M1: 59,690 km (0.118 R)
• M2: 296,952 km (0.06 R)
• M3: 572,361 km (0.089 R)
• M4: 883,525 km (0.091 R)
• M5: 1,687,015 km (0.075 R)
• M6: 2,788,056 km (0.101 R)
• M7: 3,339,473 km (0.102 R)
• M8: 4,546,728 km (0.101 R)
• M9: 5,469,747 km (0.112 R)
• M10: 6,603,848 km (0.075 R)
• M11: 7,030,502 km (0.039 R)
• M12: 7,679,008 km (0.095 R)
• M13: 8,979,463 km (0.053 R)
• M14: 9,326,230 km (0.042 R)
• M15: 9,502,906 km (0.117 R)
• M16: 10,108,029 km (0.056 R)
• M17: 11,129,184 km (0.033 R)
• M18: 13,225,798 km (0.055 R)
• M19: 14,056,366 km (0.111 R)
• M20: 14,681,834 km (0.113 R)
• M21: 18,829,435 km (0.082 R)
• M22: 19,017,330 km (0.111 R)
• M23: 25,030,865 km (0.064 R)
• M24: 28,711,422 km (0.047 R)
• M25: 29,716,719 km (0.119 R)
• M26: 33,419,865 km (0.042 R)
• M27: 34,531,676 km (0.117 R)
• M28: 36,536,587 km (0.047 R)
• M29: 47,558,809 km (0.086 R)
• M30: 60,399,542 km (0.1 R)
• M31: 61,839,421 km (0.112 R)
• M32: 62,881,819 km (0.103 R)
• M33: 65,001,621 km (0.042 R)
• M34: 68,491,590 km (0.118 R)
• M35: 70,282,576 km (0.104 R)
• M36: 73,957,597 km (0.096 R)
• M37: 77,276,575 km (0.107 R)
• M38: 81,438,538 km (0.104 R)
• M39: 82,439,048 km (0.081 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.52 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 281.6

Radius: 3.6

Gravity: 21.73 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 9.84 AU - 11.2 AU

Year: 22031 Days

Day: 21.1 Hours

Environment

Temp: -234 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 90,742,889 km

• M1: 44,879 km (0.113 R)
• M2: 186,698 km (0.113 R)
• M3: 439,070 km (0.068 R)
• M4: 1,116,898 km (0.114 R)
• M5: 1,705,715 km (0.064 R)
• M6: 2,020,618 km (0.043 R)
• M7: 2,192,207 km (0.093 R)
• M8: 2,373,221 km (0.056 R)
• M9: 3,732,916 km (0.104 R)
• M10: 3,932,928 km (0.074 R)
• M11: 4,292,561 km (0.06 R)
• M12: 5,952,499 km (0.11 R)
• M13: 7,138,960 km (0.117 R)
• M14: 7,358,420 km (0.066 R)
• M15: 8,090,851 km (0.082 R)
• M16: 8,572,407 km (0.041 R)
• M17: 10,297,719 km (0.069 R)
• M18: 13,597,549 km (0.117 R)
• M19: 15,266,612 km (0.099 R)
• M20: 15,778,087 km (0.096 R)
• M21: 18,343,691 km (0.077 R)
• M22: 21,809,724 km (0.117 R)
• M23: 24,183,842 km (0.081 R)
• M24: 25,585,724 km (0.092 R)
• M25: 28,331,443 km (0.105 R)
• M26: 29,888,159 km (0.065 R)
• M27: 31,267,002 km (0.034 R)
• M28: 32,090,688 km (0.072 R)
• M29: 32,928,735 km (0.087 R)
• M30: 47,306,587 km (0.115 R)
• M31: 55,934,494 km (0.034 R)
• M32: 56,798,721 km (0.11 R)
• M33: 60,344,789 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 889.9

Radius: 4.4

Gravity: 45.97 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 9.96 AU - 11.6 AU

Year: 22853 Days

Day: 16.5 Hours

Environment

Temp: -237 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 90,742,889 km

• M1: 54,902 km (0.055 R)
• M2: 319,840 km (0.118 R)
• M3: 462,108 km (0.082 R)
• M4: 628,909 km (0.105 R)
• M5: 1,073,963 km (0.085 R)
• M6: 2,382,944 km (0.117 R)
• M7: 3,054,340 km (0.102 R)
• M8: 3,254,950 km (0.07 R)
• M9: 4,356,739 km (0.07 R)
• M10: 4,798,950 km (0.071 R)
• M11: 5,990,348 km (0.097 R)
• M12: 7,417,062 km (0.041 R)
• M13: 9,114,250 km (0.096 R)
• M14: 9,470,293 km (0.119 R)
• M15: 10,724,073 km (0.084 R)
• M16: 11,596,079 km (0.118 R)
• M17: 16,066,512 km (0.054 R)
• M18: 16,849,507 km (0.093 R)
• M19: 30,762,558 km (0.107 R)
• M20: 34,900,734 km (0.064 R)
• M21: 35,333,970 km (0.042 R)
• M22: 38,929,256 km (0.1 R)
• M23: 40,022,068 km (0.081 R)
• M24: 42,105,517 km (0.065 R)
• M25: 54,771,520 km (0.11 R)
• M26: 61,017,232 km (0.105 R)
• M27: 67,274,462 km (0.094 R)
• M28: 68,620,244 km (0.051 R)
• M29: 81,549,988 km (0.071 R)
• M30: 82,567,702 km (0.107 R)
• M31: 84,109,907 km (0.056 R)
• M32: 87,517,148 km (0.069 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 370 - 13,362 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit