🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.61

Radius: 1.47

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.46 AU - 0.64 AU

Year: 263 Days

Day: 43.2 Hours

Environment

Temp: -121 °C

Axial Tilt: 36.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.37

Radius: 1.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.57 AU - 0.75 AU

Year: 346 Days

Day: 32.2 Hours

Environment

Temp: -136 °C

Axial Tilt: 3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 920.7

Radius: 10.9

Gravity: 7.75 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.66 AU - 0.84 AU

Year: 419 Days

Day: 14.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 43.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 77,620,207 km

• M1: 135,536 km (0.09 R)
• M2: 550,670 km (0.043 R)
• M3: 893,548 km (0.108 R)
• M4: 1,286,841 km (0.11 R)
• M5: 1,698,235 km (0.086 R)
• M6: 2,066,246 km (0.119 R)
• M7: 2,586,846 km (0.107 R)
• M8: 3,055,985 km (0.115 R)
• M9: 3,581,523 km (0.113 R)
• M10: 4,208,637 km (0.052 R)
• M11: 4,783,392 km (0.037 R)
• M12: 5,260,460 km (0.114 R)
• M13: 6,108,231 km (0.035 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 499.1

Radius: 9.5

Gravity: 5.53 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.66 AU - 1.08 AU

Year: 524 Days

Day: 6.8 Hours

Environment

Temp: -153 °C

Axial Tilt: 43.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 77,620,207 km

• M1: 118,631 km (0.095 R)
• M2: 488,587 km (0.077 R)
• M3: 974,929 km (0.116 R)
• M4: 1,619,995 km (0.074 R)
• M5: 2,012,989 km (0.059 R)
• M6: 2,960,691 km (0.078 R)
• M7: 3,602,766 km (0.076 R)
• M8: 3,950,431 km (0.066 R)
• M9: 4,759,157 km (0.104 R)
• M10: 5,099,343 km (0.113 R)
• M11: 5,455,685 km (0.1 R)
• M12: 5,898,494 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 381

Radius: 9.8

Gravity: 3.97 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.49 AU - 1.97 AU

Year: 1469 Days

Day: 5.3 Hours

Environment

Temp: -183 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 77,620,207 km

• M1: 121,922 km (0.106 R)
• M2: 731,683 km (0.088 R)
• M3: 1,157,738 km (0.097 R)
• M4: 1,674,599 km (0.052 R)
• M5: 2,007,603 km (0.103 R)
• M6: 2,549,297 km (0.098 R)
• M7: 3,034,294 km (0.072 R)
• M8: 3,519,589 km (0.08 R)
• M9: 4,431,538 km (0.099 R)
• M10: 4,905,314 km (0.082 R)
• M11: 5,312,370 km (0.104 R)
• M12: 6,740,581 km (0.056 R)
• M13: 7,269,260 km (0.062 R)
• M14: 7,773,554 km (0.091 R)
• M15: 8,087,261 km (0.032 R)
• M16: 10,337,512 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 426.2

Radius: 14.9

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 1.78 AU - 2.24 AU

Year: 1840 Days

Day: 5.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 77,620,207 km

• M1: 185,352 km (0.087 R)
• M2: 676,033 km (0.048 R)
• M3: 1,159,234 km (0.056 R)
• M4: 1,665,174 km (0.115 R)
• M5: 2,150,619 km (0.057 R)
• M6: 3,251,061 km (0.086 R)
• M7: 4,454,576 km (0.105 R)
• M8: 4,936,281 km (0.108 R)
• M9: 5,713,891 km (0.084 R)
• M10: 6,308,093 km (0.1 R)
• M11: 7,147,637 km (0.055 R)
• M12: 8,229,528 km (0.052 R)
• M13: 9,827,982 km (0.104 R)
• M14: 11,376,170 km (0.091 R)
• M15: 11,987,726 km (0.112 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 368.4

Radius: 8.2

Gravity: 5.48 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 2.62 AU - 2.62 AU

Year: 2738 Days

Day: 9.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 77,620,207 km

• M1: 102,325 km (0.084 R)
• M2: 389,104 km (0.09 R)
• M3: 766,988 km (0.068 R)
• M4: 1,347,129 km (0.091 R)
• M5: 1,897,200 km (0.096 R)
• M6: 2,320,263 km (0.112 R)
• M7: 2,924,788 km (0.034 R)
• M8: 3,305,664 km (0.062 R)
• M9: 4,324,126 km (0.087 R)
• M10: 4,588,017 km (0.097 R)
• M11: 4,971,137 km (0.12 R)
• M12: 5,899,242 km (0.114 R)
• M13: 6,249,900 km (0.102 R)
• M14: 6,748,210 km (0.081 R)
• M15: 7,329,398 km (0.1 R)
• M16: 7,913,578 km (0.111 R)
• M17: 8,655,134 km (0.117 R)
• M18: 9,509,787 km (0.104 R)
• M19: 11,007,711 km (0.118 R)
• M20: 12,129,695 km (0.062 R)
• M21: 12,988,386 km (0.103 R)
• M22: 13,283,543 km (0.11 R)
• M23: 15,010,501 km (0.115 R)
• M24: 16,387,998 km (0.091 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 901.2

Radius: 14.9

Gravity: 4.06 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 3.46 AU - 5 AU

Year: 5617 Days

Day: 6.3 Hours

Environment

Temp: -222 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 77,620,207 km

• M1: 185,352 km (0.066 R)
• M2: 658,829 km (0.086 R)
• M3: 1,318,406 km (0.062 R)
• M4: 1,987,109 km (0.07 R)
• M5: 3,033,246 km (0.088 R)
• M6: 4,045,874 km (0.116 R)
• M7: 4,685,405 km (0.057 R)
• M8: 6,039,266 km (0.109 R)
• M9: 7,089,892 km (0.074 R)
• M10: 7,565,464 km (0.089 R)
• M11: 8,704,053 km (0.102 R)
• M12: 11,271,751 km (0.049 R)
• M13: 13,024,739 km (0.043 R)
• M14: 13,628,964 km (0.117 R)
• M15: 14,953,205 km (0.104 R)
• M16: 22,030,830 km (0.105 R)
• M17: 22,889,970 km (0.094 R)
• M18: 23,367,935 km (0.081 R)
• M19: 29,075,393 km (0.112 R)
• M20: 33,256,803 km (0.106 R)
• M21: 34,596,004 km (0.097 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 631.8

Radius: 3.1

Gravity: 65.74 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 5.97 AU - 9.15 AU

Year: 13421 Days

Day: 17.5 Hours

Environment

Temp: -224 °C

Axial Tilt: 47.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 77,620,207 km

• M1: 39,494 km (0.03 R)
• M2: 197,619 km (0.111 R)
• M3: 659,278 km (0.107 R)
• M4: 1,035,666 km (0.112 R)
• M5: 1,539,960 km (0.096 R)
• M6: 4,549,271 km (0.119 R)
• M7: 4,773,070 km (0.102 R)
• M8: 6,672,364 km (0.087 R)
• M9: 7,519,986 km (0.104 R)
• M10: 7,787,766 km (0.098 R)
• M11: 8,389,449 km (0.12 R)
• M12: 12,415,726 km (0.096 R)
• M13: 12,601,676 km (0.054 R)
• M14: 17,254,918 km (0.053 R)
• M15: 28,222,985 km (0.089 R)
• M16: 32,830,599 km (0.084 R)
• M17: 34,756,672 km (0.088 R)
• M18: 35,872,522 km (0.068 R)
• M19: 41,258,943 km (0.045 R)
• M20: 46,859,738 km (0.102 R)
• M21: 48,067,890 km (0.106 R)
• M22: 50,231,973 km (0.111 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 736.8

Radius: 6.4

Gravity: 17.99 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 7.46 AU - 12.18 AU

Year: 19869 Days

Day: 18.5 Hours

Environment

Temp: -225 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 77,620,207 km

• M1: 82,129 km (0.107 R)
• M2: 409,300 km (0.115 R)
• M3: 839,543 km (0.085 R)
• M4: 1,555,519 km (0.098 R)
• M5: 2,596,720 km (0.118 R)
• M6: 2,840,864 km (0.052 R)
• M7: 3,181,348 km (0.107 R)
• M8: 5,783,454 km (0.055 R)
• M9: 6,116,459 km (0.099 R)
• M10: 7,875,879 km (0.094 R)
• M11: 8,816,700 km (0.094 R)
• M12: 9,947,660 km (0.11 R)
• M13: 10,982,428 km (0.113 R)
• M14: 30,617,598 km (0.098 R)
• M15: 34,658,386 km (0.074 R)
• M16: 37,018,292 km (0.112 R)
• M17: 57,363,752 km (0.09 R)
• M18: 58,511,916 km (0.1 R)
• M19: 59,480,413 km (0.06 R)
• M20: 64,073,366 km (0.069 R)
• M21: 71,067,964 km (0.111 R)
• M22: 74,182,891 km (0.048 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 270 - 10,447 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit