🌌 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): 0.08

Orbit Range: 0.52 AU - 0.62 AU

Year: 282 Days

Day: 42.6 Hours

Environment

Temp: -122 °C

Axial Tilt: 19.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 76,407,304 km

• M1: 42,037 km (0.09 R)
• M2: 93,499 km (0.076 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.91

Radius: 1.3

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.52 AU - 0.82 AU

Year: 360 Days

Day: 26.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 18.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 84

Radius: 15

Gravity: 0.37 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.64 AU - 0.88 AU

Year: 435 Days

Day: 14.8 Hours

Environment

Temp: -152 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 76,407,304 km

• M1: 187,446 km (0.074 R)
• M2: 663,018 km (0.083 R)
• M3: 1,545,944 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 966.2

Radius: 11.8

Gravity: 6.94 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 2.6 AU - 2.88 AU

Year: 2975 Days

Day: 8.8 Hours

Environment

Temp: -207 °C

Axial Tilt: 130.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 76,407,304 km

• M1: 146,756 km (0.082 R)
• M2: 514,317 km (0.069 R)
• M3: 1,333,366 km (0.04 R)
• M4: 1,705,266 km (0.116 R)
• M5: 2,079,859 km (0.116 R)
• M6: 2,571,887 km (0.099 R)
• M7: 3,087,550 km (0.105 R)
• M8: 3,553,099 km (0.03 R)
• M9: 4,533,264 km (0.052 R)
• M10: 4,938,226 km (0.042 R)
• M11: 5,472,141 km (0.081 R)
• M12: 7,502,333 km (0.088 R)
• M13: 12,110,845 km (0.112 R)
• M14: 12,660,917 km (0.087 R)
• M15: 13,371,806 km (0.041 R)
• M16: 16,318,136 km (0.094 R)
• M17: 17,737,520 km (0.072 R)
• M18: 18,992,198 km (0.111 R)
• M19: 20,626,405 km (0.058 R)
• M20: 21,811,370 km (0.115 R)
• M21: 23,531,895 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 445.3

Radius: 10.2

Gravity: 4.28 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 3.66 AU - 5.9 AU

Year: 6856 Days

Day: 7.7 Hours

Environment

Temp: -208 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 76,407,304 km

• M1: 127,009 km (0.071 R)
• M2: 483,500 km (0.118 R)
• M3: 969,245 km (0.077 R)
• M4: 1,424,471 km (0.076 R)
• M5: 1,891,366 km (0.06 R)
• M6: 2,215,993 km (0.11 R)
• M7: 2,941,543 km (0.063 R)
• M8: 3,551,453 km (0.065 R)
• M9: 4,003,538 km (0.081 R)
• M10: 5,218,572 km (0.091 R)
• M11: 5,774,179 km (0.094 R)
• M12: 7,107,544 km (0.086 R)
• M13: 7,680,055 km (0.105 R)
• M14: 8,477,861 km (0.041 R)
• M15: 9,669,258 km (0.032 R)
• M16: 10,644,936 km (0.069 R)
• M17: 11,733,859 km (0.111 R)
• M18: 13,477,272 km (0.114 R)
• M19: 14,131,912 km (0.081 R)
• M20: 14,693,652 km (0.087 R)
• M21: 17,027,379 km (0.086 R)
• M22: 27,959,692 km (0.101 R)
• M23: 28,488,671 km (0.118 R)

Planet 6 - Ice Giant

Semi-Major Axis: 5.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 672.9

Radius: 4

Gravity: 42.06 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 5.28 AU - 6.56 AU

Year: 9449 Days

Day: 22.4 Hours

Environment

Temp: -226 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 76,407,304 km

• M1: 49,816 km (0.117 R)
• M2: 198,367 km (0.054 R)
• M3: 474,225 km (0.103 R)
• M4: 1,190,799 km (0.101 R)
• M5: 1,551,629 km (0.119 R)
• M6: 2,296,776 km (0.083 R)
• M7: 2,874,373 km (0.053 R)
• M8: 3,445,389 km (0.118 R)
• M9: 3,900,914 km (0.111 R)
• M10: 4,367,061 km (0.077 R)
• M11: 4,838,743 km (0.086 R)
• M12: 5,311,024 km (0.06 R)
• M13: 5,813,224 km (0.048 R)
• M14: 7,068,200 km (0.105 R)
• M15: 7,347,200 km (0.09 R)
• M16: 7,970,126 km (0.118 R)
• M17: 9,178,577 km (0.111 R)
• M18: 12,291,260 km (0.113 R)
• M19: 13,226,546 km (0.117 R)
• M20: 14,082,994 km (0.075 R)
• M21: 14,334,318 km (0.103 R)
• M22: 14,845,943 km (0.089 R)
• M23: 17,228,140 km (0.106 R)
• M24: 19,931,971 km (0.096 R)
• M25: 22,220,819 km (0.09 R)
• M26: 23,078,912 km (0.113 R)
• M27: 26,541,505 km (0.038 R)
• M28: 31,926,729 km (0.104 R)
• M29: 34,021,847 km (0.119 R)
• M30: 36,560,074 km (0.031 R)
• M31: 37,393,484 km (0.1 R)
• M32: 37,633,888 km (0.074 R)
• M33: 39,098,002 km (0.097 R)
• M34: 39,844,196 km (0.062 R)
• M35: 44,791,398 km (0.099 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 322.2

Radius: 4.4

Gravity: 16.64 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 5.29 AU - 7.65 AU

Year: 10796 Days

Day: 23.4 Hours

Environment

Temp: -231 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 76,407,304 km

• M1: 54,753 km (0.053 R)
• M2: 247,136 km (0.078 R)
• M3: 392,246 km (0.097 R)
• M4: 596,297 km (0.096 R)
• M5: 808,876 km (0.097 R)
• M6: 1,913,058 km (0.084 R)
• M7: 2,187,420 km (0.101 R)
• M8: 2,360,804 km (0.072 R)
• M9: 2,505,914 km (0.11 R)
• M10: 2,977,895 km (0.118 R)
• M11: 3,213,063 km (0.07 R)
• M12: 3,843,169 km (0.077 R)
• M13: 4,253,217 km (0.114 R)
• M14: 5,854,064 km (0.113 R)
• M15: 6,431,362 km (0.061 R)
• M16: 7,619,618 km (0.119 R)
• M17: 12,210,477 km (0.067 R)
• M18: 12,646,555 km (0.109 R)
• M19: 14,555,424 km (0.074 R)
• M20: 15,169,822 km (0.091 R)
• M21: 15,737,397 km (0.094 R)
• M22: 17,049,071 km (0.079 R)
• M23: 17,251,926 km (0.104 R)
• M24: 18,645,579 km (0.033 R)
• M25: 18,789,044 km (0.115 R)
• M26: 19,150,622 km (0.05 R)
• M27: 19,369,783 km (0.094 R)
• M28: 19,813,340 km (0.081 R)
• M29: 21,654,890 km (0.102 R)
• M30: 23,191,410 km (0.052 R)
• M31: 24,712,820 km (0.032 R)
• M32: 28,518,740 km (0.095 R)
• M33: 29,285,279 km (0.106 R)
• M34: 31,974,301 km (0.099 R)
• M35: 35,368,826 km (0.066 R)
• M36: 36,476,898 km (0.107 R)
• M37: 38,066,824 km (0.064 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 771.3

Radius: 4.3

Gravity: 41.71 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 7.32 AU - 11.52 AU

Year: 18966 Days

Day: 17 Hours

Environment

Temp: -239 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 76,407,304 km

• M1: 54,005 km (0.109 R)
• M2: 245,490 km (0.118 R)
• M3: 442,062 km (0.087 R)
• M4: 844,480 km (0.047 R)
• M5: 1,364,781 km (0.101 R)
• M6: 2,115,015 km (0.116 R)
• M7: 2,350,183 km (0.091 R)
• M8: 6,081,901 km (0.067 R)
• M9: 7,293,195 km (0.115 R)
• M10: 8,133,487 km (0.118 R)
• M11: 8,603,523 km (0.12 R)
• M12: 8,926,954 km (0.059 R)
• M13: 10,241,620 km (0.12 R)
• M14: 11,485,227 km (0.061 R)
• M15: 12,009,717 km (0.095 R)
• M16: 14,721,029 km (0.034 R)
• M17: 15,575,981 km (0.072 R)
• M18: 16,136,973 km (0.108 R)
• M19: 16,711,429 km (0.112 R)
• M20: 17,727,497 km (0.054 R)
• M21: 18,338,904 km (0.08 R)
• M22: 18,516,177 km (0.119 R)
• M23: 19,419,599 km (0.083 R)
• M24: 21,905,317 km (0.104 R)
• M25: 28,197,703 km (0.109 R)
• M26: 31,625,289 km (0.11 R)
• M27: 33,570,959 km (0.059 R)
• M28: 35,320,506 km (0.116 R)
• M29: 36,988,672 km (0.082 R)
• M30: 39,293,377 km (0.057 R)
• M31: 39,588,085 km (0.116 R)
• M32: 47,776,623 km (0.046 R)
• M33: 47,944,322 km (0.089 R)
• M34: 48,280,768 km (0.073 R)
• M35: 51,732,440 km (0.111 R)
• M36: 60,483,915 km (0.078 R)
• M37: 65,517,285 km (0.106 R)
• M38: 65,931,671 km (0.033 R)
• M39: 70,171,424 km (0.103 R)
• M40: 73,468,113 km (0.119 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: 234 - 18,510 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit