🌌 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: 1.75

Radius: 1.25

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.53 AU - 0.73 AU

Year: 323 Days

Day: 30.4 Hours

Environment

Temp: -133 °C

Axial Tilt: 49.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 514.2

Radius: 13.5

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.56 AU - 0.94 AU

Year: 419 Days

Day: 6 Hours

Environment

Temp: -138 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 61,547,467 km

• M1: 167,849 km (0.09 R)
• M2: 592,707 km (0.119 R)
• M3: 1,081,144 km (0.107 R)
• M4: 1,959,283 km (0.107 R)
• M5: 2,411,368 km (0.051 R)
• M6: 2,903,395 km (0.086 R)
• M7: 4,003,987 km (0.069 R)
• M8: 4,463,851 km (0.101 R)
• M9: 5,152,300 km (0.055 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 825.6

Radius: 9.8

Gravity: 8.6 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.69 AU - 0.85 AU

Year: 436 Days

Day: 11 Hours

Environment

Temp: -137 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 61,547,467 km

• M1: 121,922 km (0.093 R)
• M2: 475,721 km (0.081 R)
• M3: 869,313 km (0.099 R)
• M4: 1,599,500 km (0.112 R)
• M5: 2,294,233 km (0.081 R)
• M6: 2,613,774 km (0.106 R)
• M7: 3,404,548 km (0.055 R)
• M8: 3,731,270 km (0.064 R)
• M9: 4,204,448 km (0.079 R)
• M10: 4,933,738 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 832.6

Radius: 15

Gravity: 3.7 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.19 AU - 1.21 AU

Year: 849 Days

Day: 12.6 Hours

Environment

Temp: -172 °C

Axial Tilt: 48.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 61,547,467 km

• M1: 186,549 km (0.111 R)
• M2: 705,952 km (0.077 R)
• M3: 1,245,103 km (0.11 R)
• M4: 2,187,420 km (0.097 R)
• M5: 3,075,882 km (0.045 R)
• M6: 3,655,873 km (0.07 R)
• M7: 4,146,404 km (0.097 R)
• M8: 5,472,589 km (0.086 R)
• M9: 6,373,468 km (0.097 R)
• M10: 7,019,880 km (0.082 R)
• M11: 7,858,227 km (0.078 R)
• M12: 8,682,212 km (0.057 R)
• M13: 9,677,486 km (0.059 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 308

Radius: 13.6

Gravity: 1.67 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 1.33 AU - 1.81 AU

Year: 1270 Days

Day: 11.1 Hours

Environment

Temp: -174 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 61,547,467 km

• M1: 169,195 km (0.102 R)
• M2: 945,159 km (0.076 R)
• M3: 2,247,110 km (0.092 R)
• M4: 2,836,076 km (0.08 R)
• M5: 6,044,652 km (0.071 R)
• M6: 7,520,285 km (0.033 R)
• M7: 8,279,345 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 996.9

Radius: 9.9

Gravity: 10.17 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 3.13 AU - 3.91 AU

Year: 4264 Days

Day: 9.3 Hours

Environment

Temp: -204 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 61,547,467 km

• M1: 123,269 km (0.102 R)
• M2: 536,308 km (0.083 R)
• M3: 910,004 km (0.12 R)
• M4: 1,752,389 km (0.11 R)
• M5: 2,204,773 km (0.115 R)
• M6: 2,594,177 km (0.05 R)
• M7: 3,224,732 km (0.045 R)
• M8: 3,576,735 km (0.079 R)
• M9: 3,908,544 km (0.078 R)
• M10: 4,686,153 km (0.09 R)
• M11: 5,476,928 km (0.082 R)
• M12: 6,776,634 km (0.074 R)
• M13: 7,183,241 km (0.071 R)
• M14: 7,750,666 km (0.081 R)
• M15: 8,271,416 km (0.048 R)
• M16: 8,696,723 km (0.079 R)
• M17: 10,104,588 km (0.086 R)
• M18: 10,954,603 km (0.058 R)
• M19: 11,851,592 km (0.081 R)
• M20: 12,343,021 km (0.109 R)
• M21: 14,893,066 km (0.114 R)
• M22: 17,146,609 km (0.056 R)
• M23: 18,160,134 km (0.117 R)
• M24: 19,213,154 km (0.044 R)
• M25: 20,445,840 km (0.048 R)
• M26: 21,010,273 km (0.118 R)
• M27: 24,067,904 km (0.112 R)
• M28: 24,856,434 km (0.096 R)
• M29: 30,773,180 km (0.045 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 701.7

Radius: 12.4

Gravity: 4.56 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 3.64 AU - 3.84 AU

Year: 4670 Days

Day: 10 Hours

Environment

Temp: -202 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 61,547,467 km

• M1: 160,219 km (0.096 R)
• M2: 595,549 km (0.042 R)
• M3: 1,102,237 km (0.026 R)
• M4: 2,422,438 km (0.083 R)
• M5: 2,988,666 km (0.103 R)
• M6: 3,620,717 km (0.101 R)
• M7: 4,760,503 km (0.082 R)
• M8: 5,289,482 km (0.119 R)
• M9: 5,975,986 km (0.094 R)
• M10: 6,624,493 km (0.107 R)
• M11: 8,471,727 km (0.043 R)
• M12: 9,741,065 km (0.033 R)
• M13: 10,205,567 km (0.097 R)
• M14: 11,641,557 km (0.077 R)
• M15: 12,704,300 km (0.1 R)
• M16: 13,673,245 km (0.054 R)
• M17: 14,472,397 km (0.091 R)
• M18: 16,340,276 km (0.088 R)
• M19: 19,074,177 km (0.049 R)
• M20: 23,275,035 km (0.093 R)
• M21: 24,183,693 km (0.119 R)
• M22: 24,880,519 km (0.036 R)
• M23: 25,990,984 km (0.113 R)
• M24: 26,804,348 km (0.059 R)
• M25: 27,550,692 km (0.086 R)
• M26: 28,140,706 km (0.085 R)
• M27: 28,739,247 km (0.034 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 630.1

Radius: 6.9

Gravity: 13.23 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 5.89 AU - 6.49 AU

Year: 9944 Days

Day: 24.3 Hours

Environment

Temp: -229 °C

Axial Tilt: 4.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 61,547,467 km

• M1: 95,892 km (0.074 R)
• M2: 338,540 km (0.099 R)
• M3: 818,899 km (0.08 R)
• M4: 1,039,406 km (0.112 R)
• M5: 1,275,920 km (0.113 R)
• M6: 1,859,950 km (0.098 R)
• M7: 2,230,654 km (0.11 R)
• M8: 2,921,048 km (0.097 R)
• M9: 3,849,153 km (0.089 R)
• M10: 4,338,189 km (0.081 R)
• M11: 4,867,915 km (0.11 R)
• M12: 5,085,280 km (0.043 R)
• M13: 5,742,314 km (0.102 R)
• M14: 7,548,559 km (0.055 R)
• M15: 11,403,098 km (0.056 R)
• M16: 11,621,810 km (0.114 R)
• M17: 12,409,443 km (0.089 R)
• M18: 13,473,532 km (0.027 R)
• M19: 13,718,125 km (0.11 R)
• M20: 14,405,826 km (0.051 R)
• M21: 15,050,743 km (0.047 R)
• M22: 19,023,015 km (0.08 R)
• M23: 20,115,229 km (0.066 R)
• M24: 26,115,300 km (0.101 R)
• M25: 26,976,535 km (0.088 R)
• M26: 34,445,508 km (0.116 R)
• M27: 35,713,799 km (0.073 R)
• M28: 41,098,425 km (0.112 R)
• M29: 46,025,730 km (0.109 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 79.7

Radius: 3.5

Gravity: 6.51 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 6.1 AU - 9.98 AU

Year: 14720 Days

Day: 24.6 Hours

Environment

Temp: -236 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 61,547,467 km

• M1: 63,429 km (0.079 R)
• M2: 176,825 km (0.098 R)
• M3: 303,983 km (0.117 R)
• M4: 1,407,716 km (0.098 R)
• M5: 2,910,576 km (0.106 R)
• M6: 3,064,064 km (0.117 R)
• M7: 3,492,961 km (0.092 R)
• M8: 3,845,862 km (0.082 R)
• M9: 5,791,831 km (0.12 R)
• M10: 6,872,975 km (0.096 R)
• M11: 7,496,499 km (0.093 R)
• M12: 10,281,862 km (0.095 R)
• M13: 11,003,223 km (0.077 R)
• M14: 15,351,135 km (0.1 R)
• M15: 18,286,694 km (0.063 R)
• M16: 18,546,994 km (0.064 R)
• M17: 19,342,705 km (0.111 R)
• M18: 19,817,380 km (0.098 R)
• M19: 21,215,970 km (0.078 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 418.8

Radius: 4

Gravity: 26.18 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 8.18 AU - 10.62 AU

Year: 18608 Days

Day: 22.9 Hours

Environment

Temp: -237 °C

Axial Tilt: 45.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 61,547,467 km

• M1: 56,099 km (0.105 R)
• M2: 191,186 km (0.044 R)
• M3: 402,418 km (0.114 R)
• M4: 669,450 km (0.071 R)
• M5: 817,702 km (0.057 R)
• M6: 1,371,064 km (0.109 R)
• M7: 1,829,133 km (0.111 R)
• M8: 1,953,599 km (0.069 R)
• M9: 2,488,261 km (0.099 R)
• M10: 2,801,071 km (0.116 R)
• M11: 8,498,805 km (0.07 R)
• M12: 10,449,710 km (0.098 R)
• M13: 11,378,863 km (0.119 R)
• M14: 11,680,153 km (0.094 R)
• M15: 13,600,690 km (0.106 R)
• M16: 14,284,951 km (0.043 R)
• M17: 18,795,626 km (0.078 R)
• M18: 19,216,445 km (0.071 R)
• M19: 24,768,620 km (0.037 R)
• M20: 27,152,462 km (0.094 R)
• M21: 29,684,855 km (0.099 R)
• M22: 36,630,086 km (0.117 R)
• M23: 36,891,583 km (0.069 R)
• M24: 39,990,204 km (0.098 R)
• M25: 41,673,628 km (0.09 R)
• M26: 41,816,046 km (0.063 R)
• M27: 43,112,162 km (0.094 R)
• M28: 44,138,553 km (0.119 R)
• M29: 51,948,160 km (0.084 R)
• M30: 55,830,524 km (0.059 R)
• M31: 57,225,075 km (0.102 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 449 - 19,005 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit