🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.59 AU - 0.62 AU

Year: 305 Days

Day: 29.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 39.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 44,970,543 km

• M1: 168,447 km (0.119 R)
• M2: 405,709 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 919.2

Radius: 9.4

Gravity: 10.4 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.67 AU - 1.07 AU

Year: 532 Days

Day: 14.1 Hours

Environment

Temp: -157 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 44,970,543 km

• M1: 116,836 km (0.104 R)
• M2: 492,925 km (0.103 R)
• M3: 1,088,175 km (0.064 R)
• M4: 1,445,265 km (0.092 R)
• M5: 2,065,647 km (0.12 R)
• M6: 2,719,540 km (0.093 R)
• M7: 3,375,377 km (0.095 R)
• M8: 3,901,812 km (0.101 R)
• M9: 4,482,102 km (0.108 R)
• M10: 5,557,710 km (0.085 R)
• M11: 5,870,520 km (0.085 R)
• M12: 6,233,893 km (0.076 R)
• M13: 6,694,056 km (0.107 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 335.3

Radius: 13.5

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.97 AU - 1.35 AU

Year: 820 Days

Day: 11.2 Hours

Environment

Temp: -170 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 44,970,543 km

• M1: 168,746 km (0.037 R)
• M2: 991,684 km (0.099 R)
• M3: 1,423,125 km (0.038 R)
• M4: 1,850,825 km (0.111 R)
• M5: 2,627,387 km (0.08 R)
• M6: 3,357,575 km (0.034 R)
• M7: 4,502,597 km (0.049 R)
• M8: 5,292,473 km (0.034 R)
• M9: 5,820,404 km (0.094 R)
• M10: 6,325,447 km (0.111 R)
• M11: 7,065,208 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 927.9

Radius: 13.7

Gravity: 4.94 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 1.78 AU - 2.2 AU

Year: 1842 Days

Day: 7 Hours

Environment

Temp: -188 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 44,970,543 km

• M1: 176,226 km (0.107 R)
• M2: 647,908 km (0.097 R)
• M3: 1,125,275 km (0.12 R)
• M4: 2,424,981 km (0.09 R)
• M5: 3,452,420 km (0.102 R)
• M6: 4,028,371 km (0.056 R)
• M7: 4,563,633 km (0.037 R)
• M8: 5,213,935 km (0.052 R)
• M9: 6,126,033 km (0.049 R)
• M10: 6,755,241 km (0.041 R)
• M11: 7,255,198 km (0.114 R)
• M12: 8,938,174 km (0.106 R)
• M13: 9,473,435 km (0.116 R)
• M14: 10,756,536 km (0.071 R)
• M15: 11,362,706 km (0.076 R)
• M16: 11,832,294 km (0.098 R)
• M17: 13,276,512 km (0.097 R)
• M18: 14,696,944 km (0.097 R)
• M19: 15,207,970 km (0.12 R)
• M20: 15,634,922 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 698

Radius: 8.2

Gravity: 10.38 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 2.31 AU - 3.23 AU

Year: 3024 Days

Day: 10.5 Hours

Environment

Temp: -193 °C

Axial Tilt: 42 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 44,970,543 km

• M1: 102,026 km (0.069 R)
• M2: 379,081 km (0.077 R)
• M3: 635,043 km (0.09 R)
• M4: 1,171,202 km (0.119 R)
• M5: 1,625,680 km (0.084 R)
• M6: 2,099,457 km (0.099 R)
• M7: 3,779,889 km (0.061 R)
• M8: 4,322,331 km (0.073 R)
• M9: 6,014,882 km (0.037 R)
• M10: 7,778,491 km (0.103 R)
• M11: 8,175,524 km (0.084 R)
• M12: 9,009,981 km (0.092 R)
• M13: 9,823,943 km (0.06 R)
• M14: 10,327,339 km (0.044 R)
• M15: 10,645,534 km (0.113 R)
• M16: 11,854,584 km (0.106 R)
• M17: 12,247,727 km (0.057 R)
• M18: 12,968,191 km (0.068 R)
• M19: 13,245,545 km (0.067 R)
• M20: 14,296,620 km (0.104 R)
• M21: 15,557,281 km (0.085 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 399.3

Radius: 14.8

Gravity: 1.82 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 3.02 AU - 4.38 AU

Year: 4669 Days

Day: 10.6 Hours

Environment

Temp: -209 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 44,970,543 km

• M1: 184,005 km (0.1 R)
• M2: 982,409 km (0.106 R)
• M3: 1,517,072 km (0.057 R)
• M4: 2,221,080 km (0.118 R)
• M5: 2,845,352 km (0.07 R)
• M6: 4,033,907 km (0.041 R)
• M7: 5,170,701 km (0.062 R)
• M8: 6,571,236 km (0.112 R)
• M9: 8,492,372 km (0.091 R)
• M10: 10,848,239 km (0.095 R)
• M11: 15,715,107 km (0.066 R)
• M12: 19,920,004 km (0.109 R)
• M13: 20,493,562 km (0.071 R)
• M14: 22,622,639 km (0.099 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 358.2

Radius: 12.2

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 4.12 AU - 4.58 AU

Year: 5952 Days

Day: 5.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 44,970,543 km

• M1: 151,842 km (0.114 R)
• M2: 581,337 km (0.082 R)
• M3: 1,101,788 km (0.12 R)
• M4: 1,561,802 km (0.038 R)
• M5: 2,065,797 km (0.106 R)
• M6: 2,529,999 km (0.05 R)
• M7: 3,368,046 km (0.075 R)
• M8: 4,196,968 km (0.073 R)
• M9: 4,949,146 km (0.05 R)
• M10: 6,319,313 km (0.063 R)
• M11: 7,442,943 km (0.095 R)
• M12: 8,962,109 km (0.116 R)
• M13: 9,352,410 km (0.119 R)
• M14: 11,614,928 km (0.114 R)
• M15: 15,353,828 km (0.051 R)
• M16: 15,970,769 km (0.048 R)
• M17: 17,254,469 km (0.103 R)
• M18: 18,479,975 km (0.118 R)
• M19: 19,242,625 km (0.057 R)
• M20: 20,292,054 km (0.062 R)
• M21: 21,867,020 km (0.11 R)
• M22: 22,290,980 km (0.067 R)
• M23: 23,374,817 km (0.078 R)
• M24: 25,961,364 km (0.092 R)
• M25: 27,161,139 km (0.079 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 523.2

Radius: 7.3

Gravity: 9.82 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 6.23 AU - 6.39 AU

Year: 10398 Days

Day: 19.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 44,970,543 km

• M1: 93,947 km (0.111 R)
• M2: 742,753 km (0.102 R)
• M3: 1,278,463 km (0.117 R)
• M4: 1,533,977 km (0.086 R)
• M5: 1,966,015 km (0.109 R)
• M6: 2,877,814 km (0.112 R)
• M7: 4,180,512 km (0.065 R)
• M8: 4,430,790 km (0.034 R)
• M9: 5,633,706 km (0.066 R)
• M10: 6,220,878 km (0.099 R)
• M11: 7,276,141 km (0.105 R)
• M12: 8,358,482 km (0.091 R)
• M13: 10,735,143 km (0.11 R)
• M14: 11,206,227 km (0.088 R)
• M15: 11,745,826 km (0.11 R)
• M16: 12,077,784 km (0.077 R)
• M17: 12,359,028 km (0.098 R)
• M18: 12,993,473 km (0.064 R)
• M19: 13,348,618 km (0.102 R)
• M20: 19,947,829 km (0.108 R)
• M21: 25,567,323 km (0.062 R)
• M22: 26,501,712 km (0.09 R)
• M23: 27,945,481 km (0.102 R)
• M24: 29,542,438 km (0.041 R)
• M25: 29,950,990 km (0.085 R)
• M26: 30,467,102 km (0.119 R)
• M27: 35,726,365 km (0.115 R)
• M28: 37,129,743 km (0.092 R)
• M29: 38,206,249 km (0.096 R)
• M30: 38,691,245 km (0.077 R)
• M31: 42,202,008 km (0.064 R)
• M32: 42,590,364 km (0.107 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 326 - 19,920 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit