🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.61

Radius: 1.47

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.52 AU - 0.62 AU

Year: 282 Days

Day: 28 Hours

Environment

Temp: -116 °C

Axial Tilt: 49.4 °

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: 365.5

Radius: 14.1

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.59 AU - 0.91 AU

Year: 426 Days

Day: 13.7 Hours

Environment

Temp: -144 °C

Axial Tilt: 16 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 61,112,598 km

• M1: 175,329 km (0.094 R)
• M2: 1,080,396 km (0.095 R)
• M3: 1,880,146 km (0.102 R)
• M4: 2,326,247 km (0.07 R)
• M5: 2,768,159 km (0.115 R)
• M6: 3,406,044 km (0.079 R)
• M7: 4,279,845 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 716.7

Radius: 13.3

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.94 AU - 1.14 AU

Year: 696 Days

Day: 9.9 Hours

Environment

Temp: -164 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 61,112,598 km

• M1: 168,298 km (0.115 R)
• M2: 866,620 km (0.043 R)
• M3: 1,386,772 km (0.052 R)
• M4: 2,014,335 km (0.1 R)
• M5: 2,624,246 km (0.106 R)
• M6: 3,226,527 km (0.06 R)
• M7: 3,706,287 km (0.029 R)
• M8: 5,084,233 km (0.03 R)
• M9: 5,851,820 km (0.079 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 960.9

Radius: 11.2

Gravity: 7.66 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 2.24 AU - 3.62 AU

Year: 3290 Days

Day: 11.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 61,112,598 km

• M1: 139,425 km (0.12 R)
• M2: 651,050 km (0.104 R)
• M3: 1,036,713 km (0.094 R)
• M4: 1,386,174 km (0.069 R)
• M5: 2,582,658 km (0.082 R)
• M6: 3,149,783 km (0.088 R)
• M7: 3,593,042 km (0.112 R)
• M8: 4,279,097 km (0.12 R)
• M9: 6,559,567 km (0.06 R)
• M10: 9,553,170 km (0.119 R)
• M11: 12,536,451 km (0.059 R)
• M12: 14,946,024 km (0.099 R)
• M13: 15,538,880 km (0.091 R)
• M14: 17,060,889 km (0.096 R)
• M15: 18,865,937 km (0.086 R)
• M16: 21,602,381 km (0.063 R)
• M17: 22,640,740 km (0.112 R)
• M18: 24,966,837 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 785.3

Radius: 12.8

Gravity: 4.79 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 3.31 AU - 5.23 AU

Year: 5788 Days

Day: 9.3 Hours

Environment

Temp: -208 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 61,112,598 km

• M1: 159,322 km (0.063 R)
• M2: 592,258 km (0.068 R)
• M3: 1,086,380 km (0.047 R)
• M4: 1,486,704 km (0.081 R)
• M5: 2,480,333 km (0.096 R)
• M6: 2,878,562 km (0.058 R)
• M7: 3,491,315 km (0.113 R)
• M8: 4,091,651 km (0.059 R)
• M9: 4,599,536 km (0.108 R)
• M10: 5,293,670 km (0.103 R)
• M11: 5,712,245 km (0.097 R)
• M12: 6,315,723 km (0.037 R)
• M13: 6,787,405 km (0.088 R)
• M14: 8,667,701 km (0.075 R)
• M15: 11,602,811 km (0.089 R)
• M16: 15,444,783 km (0.077 R)
• M17: 15,993,508 km (0.108 R)
• M18: 16,618,528 km (0.036 R)
• M19: 18,866,087 km (0.106 R)
• M20: 21,610,160 km (0.098 R)
• M21: 24,941,406 km (0.113 R)
• M22: 27,343,648 km (0.072 R)
• M23: 30,368,218 km (0.06 R)
• M24: 30,845,286 km (0.072 R)
• M25: 32,603,958 km (0.072 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.2

Radius: 11

Gravity: 3.75 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 5.37 AU - 6.31 AU

Year: 9258 Days

Day: 14.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 61,112,598 km

• M1: 136,882 km (0.12 R)
• M2: 569,669 km (0.092 R)
• M3: 1,101,788 km (0.107 R)
• M4: 2,223,324 km (0.108 R)
• M5: 2,765,317 km (0.117 R)
• M6: 3,326,757 km (0.112 R)
• M7: 3,938,164 km (0.106 R)
• M8: 4,323,977 km (0.066 R)
• M9: 4,849,065 km (0.083 R)
• M10: 5,541,404 km (0.107 R)
• M11: 6,828,096 km (0.117 R)
• M12: 8,098,930 km (0.049 R)
• M13: 10,315,970 km (0.098 R)
• M14: 10,902,992 km (0.082 R)
• M15: 12,743,495 km (0.096 R)
• M16: 20,700,755 km (0.088 R)
• M17: 24,867,504 km (0.086 R)
• M18: 27,656,308 km (0.063 R)
• M19: 28,408,486 km (0.06 R)
• M20: 30,447,954 km (0.068 R)
• M21: 30,847,231 km (0.113 R)
• M22: 33,211,176 km (0.097 R)
• M23: 34,061,042 km (0.119 R)
• M24: 36,360,810 km (0.112 R)
• M25: 38,645,618 km (0.025 R)
• M26: 39,349,326 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 581

Radius: 3.5

Gravity: 47.43 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 5.64 AU - 6.38 AU

Year: 9665 Days

Day: 22.1 Hours

Environment

Temp: -222 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 61,112,598 km

• M1: 44,730 km (0.062 R)
• M2: 162,463 km (0.031 R)
• M3: 398,080 km (0.117 R)
• M4: 548,276 km (0.071 R)
• M5: 858,841 km (0.057 R)
• M6: 1,550,732 km (0.088 R)
• M7: 2,163,036 km (0.119 R)
• M8: 2,692,313 km (0.095 R)
• M9: 3,373,582 km (0.113 R)
• M10: 3,869,798 km (0.119 R)
• M11: 4,556,602 km (0.085 R)
• M12: 4,852,656 km (0.105 R)
• M13: 5,005,545 km (0.097 R)
• M14: 5,417,986 km (0.105 R)
• M15: 6,310,038 km (0.107 R)
• M16: 7,496,499 km (0.094 R)
• M17: 8,644,513 km (0.059 R)
• M18: 9,006,091 km (0.099 R)
• M19: 10,300,561 km (0.111 R)
• M20: 10,604,245 km (0.106 R)
• M21: 11,768,715 km (0.11 R)
• M22: 16,308,561 km (0.106 R)
• M23: 16,445,294 km (0.046 R)
• M24: 17,782,100 km (0.05 R)
• M25: 18,365,981 km (0.03 R)
• M26: 18,812,381 km (0.077 R)
• M27: 21,478,664 km (0.119 R)
• M28: 21,807,929 km (0.079 R)
• M29: 22,308,334 km (0.052 R)
• M30: 22,561,304 km (0.099 R)
• M31: 26,026,738 km (0.069 R)
• M32: 27,256,283 km (0.074 R)
• M33: 29,627,110 km (0.089 R)
• M34: 36,496,645 km (0.049 R)
• M35: 39,003,007 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 350.9

Radius: 6.6

Gravity: 8.06 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 6.34 AU - 6.76 AU

Year: 10997 Days

Day: 22.5 Hours

Environment

Temp: -230 °C

Axial Tilt: 12.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 61,112,598 km

• M1: 82,129 km (0.076 R)
• M2: 353,051 km (0.105 R)
• M3: 624,870 km (0.108 R)
• M4: 1,183,170 km (0.101 R)
• M5: 1,684,921 km (0.099 R)
• M6: 1,937,442 km (0.068 R)
• M7: 2,249,802 km (0.103 R)
• M8: 2,464,027 km (0.113 R)
• M9: 2,831,439 km (0.091 R)
• M10: 6,361,649 km (0.111 R)
• M11: 6,647,082 km (0.058 R)
• M12: 8,079,781 km (0.117 R)
• M13: 9,023,145 km (0.116 R)
• M14: 9,567,681 km (0.091 R)
• M15: 9,800,904 km (0.048 R)
• M16: 13,771,681 km (0.068 R)
• M17: 15,050,593 km (0.07 R)
• M18: 15,366,394 km (0.093 R)
• M19: 15,751,160 km (0.108 R)
• M20: 16,208,032 km (0.082 R)
• M21: 17,285,735 km (0.106 R)
• M22: 21,593,705 km (0.071 R)
• M23: 23,063,653 km (0.086 R)
• M24: 26,020,006 km (0.092 R)
• M25: 29,024,380 km (0.078 R)
• M26: 32,989,023 km (0.063 R)
• M27: 35,266,501 km (0.108 R)
• M28: 36,273,744 km (0.072 R)
• M29: 38,111,703 km (0.048 R)
• M30: 40,252,598 km (0.116 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 639.5

Radius: 4.8

Gravity: 27.76 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 7.32 AU - 8.72 AU

Year: 14899 Days

Day: 16.5 Hours

Environment

Temp: -235 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 61,112,598 km

• M1: 60,288 km (0.116 R)
• M2: 242,049 km (0.118 R)
• M3: 601,234 km (0.11 R)
• M4: 872,455 km (0.111 R)
• M5: 1,048,382 km (0.107 R)
• M6: 1,791,883 km (0.085 R)
• M7: 2,117,109 km (0.087 R)
• M8: 2,334,475 km (0.117 R)
• M9: 2,610,632 km (0.08 R)
• M10: 2,908,183 km (0.092 R)
• M11: 3,543,824 km (0.105 R)
• M12: 3,822,375 km (0.111 R)
• M13: 4,455,025 km (0.031 R)
• M14: 5,154,843 km (0.084 R)
• M15: 5,886,826 km (0.086 R)
• M16: 8,793,662 km (0.066 R)
• M17: 9,461,317 km (0.102 R)
• M18: 10,440,585 km (0.066 R)
• M19: 10,610,229 km (0.112 R)
• M20: 11,012,946 km (0.113 R)
• M21: 11,247,666 km (0.047 R)
• M22: 13,247,191 km (0.1 R)
• M23: 15,180,893 km (0.068 R)
• M24: 15,692,218 km (0.103 R)
• M25: 17,852,561 km (0.114 R)
• M26: 18,422,080 km (0.03 R)
• M27: 21,452,783 km (0.06 R)
• M28: 23,810,296 km (0.109 R)
• M29: 25,304,629 km (0.105 R)
• M30: 25,816,404 km (0.098 R)
• M31: 27,715,698 km (0.096 R)
• M32: 37,026,969 km (0.119 R)
• M33: 40,263,220 km (0.102 R)
• M34: 49,964,342 km (0.118 R)
• M35: 54,244,338 km (0.098 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: 228 - 19,999 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit