🌌 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: 0.79

Radius: 0.91

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.49 AU - 0.61 AU

Year: 263 Days

Day: 26 Hours

Environment

Temp: -114 °C

Axial Tilt: 30 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.15

Radius: 1.06

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.57 AU - 0.67 AU

Year: 315 Days

Day: 42.6 Hours

Environment

Temp: -124 °C

Axial Tilt: 22.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 391.9

Radius: 11.9

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.92 AU - 1.18 AU

Year: 695 Days

Day: 13.7 Hours

Environment

Temp: -162 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 68,639,250 km

• M1: 387,907 km (0.058 R)
• M2: 674,686 km (0.115 R)
• M3: 912,697 km (0.087 R)
• M4: 1,358,349 km (0.114 R)
• M5: 2,002,367 km (0.05 R)
• M6: 2,595,074 km (0.118 R)
• M7: 3,135,571 km (0.094 R)
• M8: 4,315,001 km (0.104 R)
• M9: 5,091,564 km (0.096 R)
• M10: 5,322,243 km (0.093 R)
• M11: 6,246,908 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 164.8

Radius: 13.3

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 2.19 AU - 2.31 AU

Year: 2179 Days

Day: 13.5 Hours

Environment

Temp: -188 °C

Axial Tilt: 46.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 68,639,250 km

• M1: 207,642 km (0.066 R)
• M2: 517,459 km (0.026 R)
• M3: 928,853 km (0.112 R)
• M4: 1,620,743 km (0.11 R)
• M5: 2,523,566 km (0.114 R)
• M6: 2,791,197 km (0.115 R)
• M7: 3,265,123 km (0.07 R)
• M8: 4,186,048 km (0.082 R)
• M9: 5,138,836 km (0.113 R)
• M10: 5,554,270 km (0.115 R)
• M11: 6,402,789 km (0.067 R)
• M12: 6,884,045 km (0.051 R)
• M13: 7,383,104 km (0.109 R)
• M14: 8,192,877 km (0.102 R)
• M15: 8,833,455 km (0.083 R)
• M16: 10,249,997 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 517.9

Radius: 10.7

Gravity: 4.52 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 2.6 AU - 3.24 AU

Year: 3222 Days

Day: 5.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 68,639,250 km

• M1: 142,118 km (0.062 R)
• M2: 876,793 km (0.087 R)
• M3: 1,183,618 km (0.034 R)
• M4: 1,663,828 km (0.089 R)
• M5: 2,573,831 km (0.103 R)
• M6: 3,781,236 km (0.032 R)
• M7: 4,008,924 km (0.062 R)
• M8: 4,335,496 km (0.077 R)
• M9: 4,675,382 km (0.11 R)
• M10: 5,394,649 km (0.061 R)
• M11: 5,710,001 km (0.119 R)
• M12: 6,211,154 km (0.09 R)
• M13: 6,641,547 km (0.067 R)
• M14: 6,897,509 km (0.101 R)
• M15: 7,375,474 km (0.094 R)
• M16: 7,719,699 km (0.115 R)
• M17: 8,046,421 km (0.072 R)
• M18: 8,826,873 km (0.086 R)
• M19: 9,176,483 km (0.089 R)
• M20: 10,009,594 km (0.073 R)
• M21: 10,938,746 km (0.09 R)
• M22: 12,252,814 km (0.109 R)
• M23: 12,473,919 km (0.052 R)
• M24: 13,149,204 km (0.045 R)
• M25: 14,416,597 km (0.119 R)
• M26: 14,829,188 km (0.094 R)
• M27: 16,905,756 km (0.101 R)
• M28: 17,165,608 km (0.092 R)
• M29: 19,040,817 km (0.085 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 726

Radius: 14.2

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 3.15 AU - 4.61 AU

Year: 4935 Days

Day: 12.9 Hours

Environment

Temp: -209 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 68,639,250 km

• M1: 177,722 km (0.066 R)
• M2: 557,252 km (0.118 R)
• M3: 905,516 km (0.097 R)
• M4: 1,476,681 km (0.104 R)
• M5: 3,187,183 km (0.092 R)
• M6: 4,108,855 km (0.116 R)
• M7: 4,420,617 km (0.101 R)
• M8: 5,917,942 km (0.025 R)
• M9: 7,225,727 km (0.075 R)
• M10: 7,521,183 km (0.074 R)
• M11: 7,792,403 km (0.117 R)
• M12: 8,828,668 km (0.04 R)
• M13: 9,759,765 km (0.102 R)
• M14: 10,034,576 km (0.053 R)
• M15: 10,666,927 km (0.108 R)
• M16: 10,990,507 km (0.075 R)
• M17: 11,466,677 km (0.11 R)
• M18: 11,802,225 km (0.072 R)
• M19: 12,142,859 km (0.107 R)
• M20: 13,756,272 km (0.109 R)
• M21: 16,701,854 km (0.103 R)
• M22: 19,305,007 km (0.087 R)
• M23: 20,034,596 km (0.105 R)
• M24: 20,429,235 km (0.106 R)
• M25: 21,432,887 km (0.088 R)
• M26: 21,943,913 km (0.101 R)
• M27: 22,931,409 km (0.095 R)
• M28: 23,940,746 km (0.091 R)
• M29: 24,535,248 km (0.103 R)
• M30: 25,192,132 km (0.096 R)
• M31: 26,929,262 km (0.078 R)
• M32: 28,255,896 km (0.03 R)
• M33: 30,275,916 km (0.1 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 720.2

Radius: 7.9

Gravity: 11.54 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 6.79 AU - 10.71 AU

Year: 16712 Days

Day: 19.3 Hours

Environment

Temp: -228 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 68,639,250 km

• M1: 99,333 km (0.1 R)
• M2: 283,638 km (0.094 R)
• M3: 483,800 km (0.084 R)
• M4: 825,331 km (0.09 R)
• M5: 1,310,627 km (0.115 R)
• M6: 1,964,220 km (0.045 R)
• M7: 2,269,848 km (0.032 R)
• M8: 2,598,665 km (0.091 R)
• M9: 2,895,018 km (0.096 R)
• M10: 3,506,724 km (0.067 R)
• M11: 4,212,377 km (0.059 R)
• M12: 4,382,021 km (0.085 R)
• M13: 4,731,631 km (0.08 R)
• M14: 7,472,114 km (0.096 R)
• M15: 8,351,152 km (0.06 R)
• M16: 11,010,104 km (0.102 R)
• M17: 13,428,204 km (0.113 R)
• M18: 14,601,500 km (0.103 R)
• M19: 16,689,587 km (0.087 R)
• M20: 17,439,671 km (0.117 R)
• M21: 18,276,970 km (0.06 R)
• M22: 19,206,422 km (0.067 R)
• M23: 20,606,359 km (0.099 R)
• M24: 21,058,743 km (0.07 R)
• M25: 22,055,812 km (0.076 R)
• M26: 24,526,870 km (0.093 R)
• M27: 27,215,892 km (0.077 R)
• M28: 27,561,912 km (0.117 R)
• M29: 27,822,810 km (0.102 R)
• M30: 28,084,906 km (0.063 R)
• M31: 28,701,548 km (0.102 R)
• M32: 33,875,540 km (0.08 R)
• M33: 37,529,917 km (0.102 R)
• M34: 37,732,772 km (0.06 R)
• M35: 39,791,837 km (0.069 R)
• M36: 43,745,409 km (0.114 R)
• M37: 44,074,225 km (0.025 R)
• M38: 46,862,131 km (0.073 R)
• M39: 48,806,904 km (0.093 R)
• M40: 49,270,208 km (0.12 R)
• M41: 50,909,203 km (0.116 R)
• M42: 53,055,782 km (0.068 R)
• M43: 53,297,084 km (0.066 R)
• M44: 57,482,533 km (0.114 R)
• M45: 61,177,600 km (0.038 R)
• M46: 65,388,780 km (0.112 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: 521 - 19,299 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit