🌌 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: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.24

Radius: 0.57

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 0.63 AU - 0.67 AU

Year: 338 Days

Day: 25.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 15.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 838.2

Radius: 9.9

Gravity: 8.55 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.8 AU - 1.02 AU

Year: 561 Days

Day: 8.9 Hours

Environment

Temp: -152 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 82,177,486 km

• M1: 124,465 km (0.076 R)
• M2: 464,801 km (0.074 R)
• M3: 875,297 km (0.111 R)
• M4: 1,434,045 km (0.073 R)
• M5: 2,095,717 km (0.101 R)
• M6: 2,476,294 km (0.104 R)
• M7: 2,856,871 km (0.112 R)
• M8: 3,238,943 km (0.095 R)
• M9: 3,587,656 km (0.098 R)
• M10: 4,469,386 km (0.041 R)
• M11: 4,936,431 km (0.081 R)
• M12: 5,762,510 km (0.11 R)
• M13: 6,296,724 km (0.103 R)
• M14: 6,780,823 km (0.089 R)

Planet 3 - Gas Giant

Semi-Major Axis: 3.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 255.1

Radius: 9.3

Gravity: 2.95 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 3.1 AU - 4.12 AU

Year: 4429 Days

Day: 9.7 Hours

Environment

Temp: -208 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 82,177,486 km

• M1: 115,789 km (0.057 R)
• M2: 714,928 km (0.113 R)
• M3: 1,052,870 km (0.06 R)
• M4: 1,371,513 km (0.036 R)
• M5: 1,732,942 km (0.12 R)
• M6: 2,118,605 km (0.036 R)
• M7: 2,531,794 km (0.12 R)
• M8: 2,884,546 km (0.075 R)
• M9: 3,235,054 km (0.075 R)
• M10: 3,883,112 km (0.113 R)
• M11: 4,418,523 km (0.114 R)
• M12: 4,817,650 km (0.117 R)
• M13: 7,865,258 km (0.056 R)
• M14: 8,319,736 km (0.068 R)
• M15: 8,757,310 km (0.118 R)
• M16: 9,752,136 km (0.086 R)
• M17: 10,087,384 km (0.1 R)
• M18: 10,391,816 km (0.058 R)
• M19: 12,177,715 km (0.083 R)
• M20: 12,654,334 km (0.084 R)
• M21: 14,301,856 km (0.11 R)
• M22: 15,028,752 km (0.083 R)
• M23: 15,780,032 km (0.049 R)
• M24: 16,503,787 km (0.048 R)
• M25: 19,037,825 km (0.115 R)
• M26: 19,444,881 km (0.109 R)
• M27: 19,917,311 km (0.029 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 487.8

Radius: 10.1

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 4.08 AU - 4.22 AU

Year: 5459 Days

Day: 10.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 43.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 82,177,486 km

• M1: 125,662 km (0.11 R)
• M2: 476,469 km (0.103 R)
• M3: 1,186,162 km (0.112 R)
• M4: 1,712,297 km (0.097 R)
• M5: 2,404,487 km (0.118 R)
• M6: 3,176,112 km (0.057 R)
• M7: 4,059,039 km (0.087 R)
• M8: 5,565,190 km (0.094 R)
• M9: 7,906,547 km (0.097 R)
• M10: 8,648,253 km (0.076 R)
• M11: 9,075,654 km (0.104 R)
• M12: 11,289,852 km (0.115 R)
• M13: 11,753,755 km (0.027 R)
• M14: 14,590,131 km (0.062 R)
• M15: 15,534,392 km (0.048 R)
• M16: 16,936,125 km (0.079 R)
• M17: 18,420,435 km (0.109 R)
• M18: 18,869,228 km (0.085 R)
• M19: 21,575,304 km (0.085 R)
• M20: 26,751,989 km (0.098 R)
• M21: 28,334,286 km (0.077 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 674.9

Radius: 5.1

Gravity: 25.95 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 6.25 AU - 7.01 AU

Year: 11023 Days

Day: 22.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 82,177,486 km

• M1: 65,225 km (0.047 R)
• M2: 295,905 km (0.094 R)
• M3: 527,482 km (0.034 R)
• M4: 896,390 km (0.087 R)
• M5: 1,109,119 km (0.087 R)
• M6: 1,277,715 km (0.087 R)
• M7: 1,477,429 km (0.029 R)
• M8: 1,698,085 km (0.07 R)
• M9: 1,940,434 km (0.048 R)
• M10: 2,187,270 km (0.086 R)
• M11: 2,964,132 km (0.089 R)
• M12: 4,190,087 km (0.109 R)
• M13: 4,363,919 km (0.071 R)
• M14: 4,573,057 km (0.105 R)
• M15: 5,307,284 km (0.071 R)
• M16: 6,154,157 km (0.11 R)
• M17: 7,376,970 km (0.055 R)
• M18: 7,890,988 km (0.077 R)
• M19: 10,450,159 km (0.064 R)
• M20: 11,375,721 km (0.092 R)
• M21: 11,601,165 km (0.116 R)
• M22: 12,652,988 km (0.098 R)
• M23: 12,956,073 km (0.111 R)
• M24: 13,640,035 km (0.099 R)
• M25: 15,976,005 km (0.075 R)
• M26: 17,054,157 km (0.039 R)
• M27: 22,289,185 km (0.102 R)
• M28: 22,999,476 km (0.059 R)
• M29: 25,030,267 km (0.102 R)
• M30: 26,481,366 km (0.105 R)
• M31: 27,580,611 km (0.112 R)
• M32: 29,656,581 km (0.088 R)
• M33: 31,170,212 km (0.049 R)
• M34: 42,283,090 km (0.092 R)
• M35: 44,197,793 km (0.089 R)
• M36: 47,759,270 km (0.11 R)
• M37: 48,789,700 km (0.1 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 233.2

Radius: 6.6

Gravity: 5.35 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 6.57 AU - 8.65 AU

Year: 13555 Days

Day: 22.1 Hours

Environment

Temp: -223 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 82,177,486 km

• M1: 82,428 km (0.086 R)
• M2: 385,364 km (0.118 R)
• M3: 647,609 km (0.031 R)
• M4: 860,786 km (0.115 R)
• M5: 1,143,077 km (0.074 R)
• M6: 1,647,821 km (0.118 R)
• M7: 3,200,497 km (0.099 R)
• M8: 4,356,739 km (0.079 R)
• M9: 4,836,499 km (0.117 R)
• M10: 6,888,533 km (0.059 R)
• M11: 7,113,828 km (0.098 R)
• M12: 7,941,104 km (0.073 R)
• M13: 8,699,715 km (0.082 R)
• M14: 8,918,726 km (0.111 R)
• M15: 11,008,907 km (0.091 R)
• M16: 11,950,925 km (0.092 R)
• M17: 12,664,058 km (0.113 R)
• M18: 13,347,122 km (0.119 R)
• M19: 20,560,582 km (0.077 R)
• M20: 21,344,175 km (0.071 R)
• M21: 27,489,058 km (0.115 R)
• M22: 29,510,125 km (0.102 R)
• M23: 34,279,155 km (0.044 R)
• M24: 40,747,767 km (0.114 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 672.1

Radius: 7.9

Gravity: 10.77 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 8.7 AU - 12.74 AU

Year: 22662 Days

Day: 15.2 Hours

Environment

Temp: -240 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 82,177,486 km

• M1: 102,774 km (0.065 R)
• M2: 398,080 km (0.117 R)
• M3: 661,223 km (0.11 R)
• M4: 1,096,852 km (0.1 R)
• M5: 1,365,380 km (0.117 R)
• M6: 1,805,198 km (0.069 R)
• M7: 4,673,587 km (0.11 R)
• M8: 6,136,056 km (0.067 R)
• M9: 7,677,961 km (0.048 R)
• M10: 8,619,979 km (0.063 R)
• M11: 9,462,215 km (0.057 R)
• M12: 13,385,120 km (0.062 R)
• M13: 14,981,030 km (0.042 R)
• M14: 15,947,731 km (0.105 R)
• M15: 17,916,140 km (0.102 R)
• M16: 18,912,462 km (0.095 R)
• M17: 19,849,992 km (0.04 R)
• M18: 20,233,411 km (0.09 R)
• M19: 25,679,522 km (0.101 R)
• M20: 28,010,855 km (0.079 R)
• M21: 30,734,135 km (0.117 R)
• M22: 32,556,237 km (0.06 R)
• M23: 37,862,922 km (0.117 R)
• M24: 43,880,347 km (0.105 R)
• M25: 45,188,730 km (0.073 R)
• M26: 47,711,847 km (0.055 R)
• M27: 57,766,769 km (0.065 R)
• M28: 61,341,111 km (0.074 R)
• M29: 62,770,070 km (0.056 R)
• M30: 68,708,058 km (0.098 R)
• M31: 78,778,239 km (0.077 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: 273 - 19,493 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit