🌌 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: 1.14

Radius: 1.05

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 0.51 AU - 0.63 AU

Year: 282 Days

Day: 14.4 Hours

Environment

Temp: -124 °C

Axial Tilt: 4.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 139.4

Radius: 8.8

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.61 AU - 0.93 AU

Year: 443 Days

Day: 9.2 Hours

Environment

Temp: -136 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 83,775,848 km

• M1: 109,655 km (0.102 R)
• M2: 442,511 km (0.076 R)
• M3: 756,516 km (0.06 R)
• M4: 1,097,600 km (0.095 R)
• M5: 1,996,084 km (0.063 R)
• M6: 2,645,638 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 794.8

Radius: 8.2

Gravity: 11.82 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.67 AU - 0.89 AU

Year: 452 Days

Day: 5.6 Hours

Environment

Temp: -153 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 83,775,848 km

• M1: 102,026 km (0.085 R)
• M2: 366,964 km (0.047 R)
• M3: 750,682 km (0.037 R)
• M4: 1,194,539 km (0.094 R)
• M5: 1,453,493 km (0.101 R)
• M6: 1,812,977 km (0.075 R)
• M7: 2,087,937 km (0.097 R)
• M8: 2,352,576 km (0.036 R)
• M9: 2,723,130 km (0.101 R)
• M10: 3,167,137 km (0.073 R)
• M11: 3,506,125 km (0.07 R)
• M12: 3,789,314 km (0.083 R)
• M13: 4,115,737 km (0.096 R)
• M14: 4,625,267 km (0.027 R)
• M15: 4,982,656 km (0.078 R)
• M16: 5,579,103 km (0.118 R)
• M17: 6,185,124 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 999.7

Radius: 12.2

Gravity: 6.72 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.05 AU - 1.09 AU

Year: 726 Days

Day: 11.1 Hours

Environment

Temp: -169 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 83,775,848 km

• M1: 152,141 km (0.058 R)
• M2: 537,356 km (0.055 R)
• M3: 972,237 km (0.111 R)
• M4: 1,445,863 km (0.082 R)
• M5: 1,958,984 km (0.08 R)
• M6: 2,685,282 km (0.062 R)
• M7: 3,105,353 km (0.088 R)
• M8: 3,583,767 km (0.085 R)
• M9: 4,553,310 km (0.068 R)
• M10: 5,304,292 km (0.091 R)
• M11: 5,749,645 km (0.106 R)
• M12: 6,136,205 km (0.101 R)
• M13: 6,916,807 km (0.092 R)
• M14: 7,592,840 km (0.118 R)
• M15: 8,134,683 km (0.111 R)
• M16: 9,296,161 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 277.6

Radius: 12.9

Gravity: 1.67 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 1.53 AU - 2.05 AU

Year: 1571 Days

Day: 14.7 Hours

Environment

Temp: -186 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 83,775,848 km

• M1: 167,101 km (0.084 R)
• M2: 688,001 km (0.042 R)
• M3: 1,156,541 km (0.078 R)
• M4: 1,717,384 km (0.109 R)
• M5: 2,269,848 km (0.113 R)
• M6: 3,385,699 km (0.097 R)
• M7: 6,360,453 km (0.102 R)
• M8: 6,878,660 km (0.087 R)
• M9: 7,279,732 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 476.3

Radius: 14.6

Gravity: 2.23 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 2.32 AU - 3.66 AU

Year: 3392 Days

Day: 12.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 83,775,848 km

• M1: 181,612 km (0.057 R)
• M2: 696,528 km (0.068 R)
• M3: 1,405,322 km (0.055 R)
• M4: 2,389,377 km (0.101 R)
• M5: 3,351,591 km (0.119 R)
• M6: 4,300,939 km (0.083 R)
• M7: 6,935,806 km (0.079 R)
• M8: 8,443,304 km (0.088 R)
• M9: 9,061,891 km (0.071 R)
• M10: 9,636,945 km (0.096 R)
• M11: 10,274,531 km (0.061 R)
• M12: 12,401,663 km (0.069 R)
• M13: 13,202,311 km (0.101 R)
• M14: 13,708,251 km (0.083 R)
• M15: 15,405,439 km (0.095 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.36 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 894.2

Radius: 3.2

Gravity: 87.32 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 7.44 AU - 11.28 AU

Year: 18786 Days

Day: 16.4 Hours

Environment

Temp: -235 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 83,775,848 km

• M1: 39,793 km (0.074 R)
• M2: 354,248 km (0.107 R)
• M3: 552,764 km (0.101 R)
• M4: 687,103 km (0.092 R)
• M5: 820,993 km (0.097 R)
• M6: 1,226,553 km (0.111 R)
• M7: 1,408,763 km (0.105 R)
• M8: 1,557,164 km (0.117 R)
• M9: 1,846,636 km (0.088 R)
• M10: 2,878,562 km (0.114 R)
• M11: 3,010,059 km (0.09 R)
• M12: 3,118,068 km (0.107 R)
• M13: 3,576,137 km (0.116 R)
• M14: 4,277,302 km (0.093 R)
• M15: 5,141,679 km (0.045 R)
• M16: 5,414,246 km (0.112 R)
• M17: 6,511,397 km (0.117 R)
• M18: 7,111,883 km (0.107 R)
• M19: 9,190,545 km (0.067 R)
• M20: 11,443,639 km (0.113 R)
• M21: 12,453,275 km (0.098 R)
• M22: 15,673,967 km (0.114 R)
• M23: 19,222,878 km (0.057 R)
• M24: 25,326,920 km (0.062 R)
• M25: 26,455,635 km (0.114 R)
• M26: 27,032,485 km (0.117 R)
• M27: 36,291,247 km (0.098 R)
• M28: 36,859,868 km (0.096 R)
• M29: 38,307,527 km (0.091 R)
• M30: 43,512,186 km (0.118 R)
• M31: 58,931,239 km (0.072 R)
• M32: 59,716,478 km (0.097 R)
• M33: 62,113,934 km (0.054 R)
• M34: 65,829,047 km (0.118 R)
• M35: 71,452,880 km (0.044 R)
• M36: 72,569,927 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 40.4

Radius: 4.4

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 9.32 AU - 10.72 AU

Year: 20807 Days

Day: 20.2 Hours

Environment

Temp: -240 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 83,775,848 km

• M1: 92,900 km (0.119 R)
• M2: 779,854 km (0.104 R)
• M3: 1,237,324 km (0.102 R)
• M4: 1,883,138 km (0.115 R)
• M5: 2,287,651 km (0.113 R)
• M6: 3,067,504 km (0.04 R)
• M7: 6,776,634 km (0.112 R)
• M8: 11,243,477 km (0.045 R)
• M9: 13,751,186 km (0.111 R)
• M10: 20,043,272 km (0.12 R)
• M11: 22,035,916 km (0.041 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 556.4

Radius: 3.9

Gravity: 36.58 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 9.87 AU - 11.13 AU

Year: 22320 Days

Day: 15.5 Hours

Environment

Temp: -225 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 83,775,848 km

• M1: 49,966 km (0.107 R)
• M2: 183,706 km (0.115 R)
• M3: 397,631 km (0.083 R)
• M4: 696,528 km (0.118 R)
• M5: 839,394 km (0.057 R)
• M6: 1,103,733 km (0.057 R)
• M7: 1,359,396 km (0.09 R)
• M8: 1,853,069 km (0.107 R)
• M9: 3,609,946 km (0.075 R)
• M10: 4,041,835 km (0.098 R)
• M11: 5,825,939 km (0.095 R)
• M12: 6,866,243 km (0.064 R)
• M13: 7,822,921 km (0.103 R)
• M14: 7,973,716 km (0.119 R)
• M15: 10,293,829 km (0.064 R)
• M16: 11,412,822 km (0.11 R)
• M17: 14,185,020 km (0.075 R)
• M18: 14,334,318 km (0.08 R)
• M19: 19,965,332 km (0.059 R)
• M20: 22,094,110 km (0.087 R)
• M21: 26,343,437 km (0.05 R)
• M22: 29,743,797 km (0.11 R)
• M23: 30,855,758 km (0.063 R)
• M24: 37,257,051 km (0.079 R)
• M25: 42,445,404 km (0.057 R)
• M26: 47,759,270 km (0.103 R)
• M27: 55,510,833 km (0.112 R)
• M28: 55,881,836 km (0.06 R)
• M29: 62,845,317 km (0.085 R)
• M30: 63,856,001 km (0.06 R)
• M31: 66,534,251 km (0.056 R)
• M32: 68,219,172 km (0.107 R)
• M33: 69,072,179 km (0.083 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 645.5

Radius: 7.3

Gravity: 12.11 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 9.04 AU - 12.88 AU

Year: 23803 Days

Day: 18 Hours

Environment

Temp: -232 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 83,775,848 km

• M1: 96,191 km (0.11 R)
• M2: 330,462 km (0.068 R)
• M3: 612,154 km (0.117 R)
• M4: 865,723 km (0.105 R)
• M5: 1,414,149 km (0.057 R)
• M6: 1,850,226 km (0.058 R)
• M7: 2,283,163 km (0.032 R)
• M8: 2,632,474 km (0.115 R)
• M9: 4,060,685 km (0.058 R)
• M10: 4,433,632 km (0.04 R)
• M11: 7,122,654 km (0.115 R)
• M12: 7,465,233 km (0.12 R)
• M13: 9,230,488 km (0.116 R)
• M14: 9,816,163 km (0.103 R)
• M15: 10,179,387 km (0.093 R)
• M16: 11,322,764 km (0.112 R)
• M17: 15,264,668 km (0.119 R)
• M18: 16,083,267 km (0.077 R)
• M19: 16,673,431 km (0.057 R)
• M20: 19,651,775 km (0.113 R)
• M21: 20,817,292 km (0.107 R)
• M22: 22,234,582 km (0.063 R)
• M23: 25,942,365 km (0.104 R)
• M24: 27,821,763 km (0.075 R)
• M25: 28,062,915 km (0.099 R)
• M26: 30,808,335 km (0.077 R)
• M27: 31,066,541 km (0.066 R)
• M28: 32,245,971 km (0.115 R)
• M29: 36,826,508 km (0.053 R)
• M30: 38,147,158 km (0.081 R)
• M31: 38,444,858 km (0.099 R)
• M32: 38,744,053 km (0.113 R)
• M33: 40,417,754 km (0.045 R)
• M34: 44,399,900 km (0.055 R)
• M35: 45,393,080 km (0.118 R)
• M36: 46,063,428 km (0.05 R)
• M37: 48,113,966 km (0.036 R)
• M38: 51,302,645 km (0.105 R)
• M39: 51,847,480 km (0.062 R)
• M40: 63,153,489 km (0.036 R)
• M41: 63,988,694 km (0.116 R)
• M42: 80,066,276 km (0.105 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 201 - 18,717 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit