🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.13

Radius: 0.44

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.49 AU - 0.59 AU

Year: 260 Days

Day: 47 Hours

Environment

Temp: -127 °C

Axial Tilt: 19.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 416

Radius: 10.9

Gravity: 3.5 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.8 AU - 0.86 AU

Year: 496 Days

Day: 5.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 69,807,733 km

• M1: 135,536 km (0.096 R)
• M2: 531,521 km (0.037 R)
• M3: 904,469 km (0.111 R)
• M4: 1,278,463 km (0.105 R)
• M5: 1,735,784 km (0.056 R)
• M6: 2,585,051 km (0.078 R)
• M7: 3,007,516 km (0.093 R)
• M8: 3,534,998 km (0.115 R)
• M9: 4,297,199 km (0.033 R)
• M10: 5,150,355 km (0.098 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 356.1

Radius: 10.2

Gravity: 3.42 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.22 AU - 1.66 AU

Year: 1134 Days

Day: 9.7 Hours

Environment

Temp: -170 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 69,807,733 km

• M1: 128,654 km (0.061 R)
• M2: 545,583 km (0.106 R)
• M3: 937,979 km (0.11 R)
• M4: 1,356,853 km (0.117 R)
• M5: 1,836,613 km (0.115 R)
• M6: 3,312,396 km (0.102 R)
• M7: 3,748,175 km (0.106 R)
• M8: 4,874,497 km (0.109 R)
• M9: 5,271,380 km (0.101 R)
• M10: 6,507,807 km (0.109 R)
• M11: 6,856,220 km (0.091 R)
• M12: 8,225,041 km (0.073 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 903.2

Radius: 8.4

Gravity: 12.8 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 1.64 AU - 1.9 AU

Year: 1545 Days

Day: 7.1 Hours

Environment

Temp: -183 °C

Axial Tilt: 46.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 69,807,733 km

• M1: 105,018 km (0.093 R)
• M2: 459,714 km (0.074 R)
• M3: 776,862 km (0.102 R)
• M4: 1,088,025 km (0.091 R)
• M5: 1,725,312 km (0.11 R)
• M6: 2,329,089 km (0.067 R)
• M7: 2,800,622 km (0.094 R)
• M8: 3,686,092 km (0.057 R)
• M9: 4,308,269 km (0.102 R)
• M10: 5,690,254 km (0.1 R)
• M11: 6,343,548 km (0.107 R)
• M12: 7,291,101 km (0.107 R)
• M13: 8,916,482 km (0.11 R)
• M14: 9,366,173 km (0.08 R)
• M15: 9,797,165 km (0.11 R)
• M16: 10,172,057 km (0.099 R)
• M17: 11,133,074 km (0.063 R)
• M18: 11,616,873 km (0.112 R)
• M19: 12,666,302 km (0.097 R)
• M20: 13,609,217 km (0.117 R)
• M21: 14,076,262 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 99.2

Radius: 11.1

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 1.69 AU - 2.53 AU

Year: 2011 Days

Day: 10.9 Hours

Environment

Temp: -196 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 69,807,733 km

• M1: 166,203 km (0.045 R)
• M2: 515,215 km (0.029 R)
• M3: 1,368,222 km (0.044 R)
• M4: 1,937,741 km (0.078 R)
• M5: 2,314,728 km (0.087 R)
• M6: 4,425,554 km (0.096 R)
• M7: 6,273,387 km (0.083 R)
• M8: 6,909,926 km (0.076 R)
• M9: 7,266,567 km (0.105 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 172.9

Radius: 8

Gravity: 2.7 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 6.14 AU - 6.8 AU

Year: 10796 Days

Day: 17.2 Hours

Environment

Temp: -223 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 69,807,733 km

• M1: 99,632 km (0.109 R)
• M2: 812,167 km (0.056 R)
• M3: 1,294,321 km (0.076 R)
• M4: 4,415,082 km (0.049 R)
• M5: 7,600,469 km (0.112 R)
• M6: 10,494,141 km (0.036 R)
• M7: 12,060,431 km (0.118 R)
• M8: 12,411,687 km (0.095 R)
• M9: 16,309,908 km (0.049 R)
• M10: 23,190,064 km (0.085 R)
• M11: 24,048,007 km (0.078 R)
• M12: 24,685,145 km (0.098 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 692.8

Radius: 5.5

Gravity: 22.9 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 5.1 AU - 7.92 AU

Year: 10896 Days

Day: 22.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 69,807,733 km

• M1: 70,909 km (0.115 R)
• M2: 272,867 km (0.11 R)
• M3: 617,540 km (0.107 R)
• M4: 1,058,704 km (0.025 R)
• M5: 1,322,146 km (0.072 R)
• M6: 1,689,110 km (0.11 R)
• M7: 2,249,802 km (0.111 R)
• M8: 3,549,509 km (0.074 R)
• M9: 4,285,381 km (0.054 R)
• M10: 4,892,748 km (0.087 R)
• M11: 6,276,977 km (0.107 R)
• M12: 6,857,417 km (0.052 R)
• M13: 7,686,189 km (0.115 R)
• M14: 9,640,536 km (0.106 R)
• M15: 10,840,011 km (0.093 R)
• M16: 11,058,424 km (0.089 R)
• M17: 11,335,479 km (0.037 R)
• M18: 11,788,312 km (0.059 R)
• M19: 12,194,470 km (0.091 R)
• M20: 14,366,183 km (0.059 R)
• M21: 14,563,502 km (0.077 R)
• M22: 15,925,741 km (0.091 R)
• M23: 16,279,240 km (0.115 R)
• M24: 17,296,655 km (0.055 R)
• M25: 18,822,703 km (0.084 R)
• M26: 20,853,644 km (0.11 R)
• M27: 21,878,539 km (0.068 R)
• M28: 23,478,039 km (0.03 R)
• M29: 24,213,313 km (0.068 R)
• M30: 26,610,170 km (0.108 R)
• M31: 33,572,754 km (0.109 R)
• M32: 34,623,230 km (0.026 R)
• M33: 35,936,849 km (0.119 R)
• M34: 36,789,856 km (0.098 R)
• M35: 37,159,513 km (0.079 R)
• M36: 38,536,262 km (0.064 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 918.4

Radius: 6.1

Gravity: 24.68 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 7.57 AU - 12.41 AU

Year: 20714 Days

Day: 18 Hours

Environment

Temp: -222 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 69,807,733 km

• M1: 78,988 km (0.051 R)
• M2: 512,522 km (0.049 R)
• M3: 1,482,066 km (0.115 R)
• M4: 2,486,616 km (0.05 R)
• M5: 3,076,331 km (0.045 R)
• M6: 3,301,924 km (0.091 R)
• M7: 6,709,614 km (0.117 R)
• M8: 9,388,912 km (0.101 R)
• M9: 9,925,968 km (0.114 R)
• M10: 19,362,004 km (0.106 R)
• M11: 22,047,136 km (0.115 R)
• M12: 23,641,251 km (0.12 R)
• M13: 27,057,168 km (0.058 R)
• M14: 31,837,868 km (0.075 R)
• M15: 32,911,532 km (0.093 R)
• M16: 40,953,763 km (0.099 R)
• M17: 56,776,730 km (0.1 R)
• M18: 57,168,228 km (0.109 R)
• M19: 64,313,920 km (0.064 R)
• M20: 68,874,860 km (0.109 R)
• M21: 72,721,320 km (0.096 R)
• M22: 74,579,924 km (0.065 R)
• M23: 74,814,494 km (0.056 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 972.8

Radius: 3.9

Gravity: 63.96 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 9.92 AU - 11.94 AU

Year: 23705 Days

Day: 21.7 Hours

Environment

Temp: -228 °C

Axial Tilt: 24.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 69,807,733 km

• M1: 51,312 km (0.119 R)
• M2: 249,230 km (0.113 R)
• M3: 705,204 km (0.092 R)
• M4: 849,417 km (0.103 R)
• M5: 1,095,954 km (0.086 R)
• M6: 1,636,002 km (0.109 R)
• M7: 1,912,010 km (0.099 R)
• M8: 2,481,380 km (0.077 R)
• M9: 2,873,177 km (0.053 R)
• M10: 3,156,365 km (0.067 R)
• M11: 4,118,130 km (0.12 R)
• M12: 4,259,799 km (0.063 R)
• M13: 9,066,678 km (0.083 R)
• M14: 11,174,662 km (0.044 R)
• M15: 11,311,993 km (0.078 R)
• M16: 11,450,520 km (0.096 R)
• M17: 13,744,304 km (0.116 R)
• M18: 14,221,222 km (0.119 R)
• M19: 15,376,417 km (0.09 R)
• M20: 16,151,334 km (0.043 R)
• M21: 17,042,339 km (0.112 R)
• M22: 19,911,776 km (0.081 R)
• M23: 21,779,206 km (0.112 R)
• M24: 22,317,908 km (0.088 R)
• M25: 23,987,570 km (0.097 R)
• M26: 28,457,853 km (0.056 R)
• M27: 30,151,600 km (0.064 R)
• M28: 30,685,964 km (0.083 R)
• M29: 30,955,539 km (0.102 R)
• M30: 32,187,927 km (0.114 R)
• M31: 34,459,122 km (0.117 R)
• M32: 48,334,773 km (0.078 R)
• M33: 56,995,742 km (0.092 R)
• M34: 62,011,459 km (0.112 R)
• M35: 63,746,645 km (0.102 R)
• M36: 74,841,870 km (0.109 R)
• M37: 77,553,930 km (0.12 R)
• M38: 95,213,210 km (0.071 R)

Planet 10 - Ice Giant

Semi-Major Axis: 11.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 366.4

Radius: 5

Gravity: 14.66 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 10.25 AU - 11.81 AU

Year: 24031 Days

Day: 18.2 Hours

Environment

Temp: -227 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 69,807,733 km

• M1: 79,586 km (0.094 R)
• M2: 358,736 km (0.057 R)
• M3: 1,496,876 km (0.111 R)
• M4: 1,693,747 km (0.082 R)
• M5: 2,305,004 km (0.062 R)
• M6: 3,652,582 km (0.06 R)
• M7: 5,266,443 km (0.075 R)
• M8: 5,454,189 km (0.105 R)
• M9: 12,114,884 km (0.081 R)
• M10: 12,442,354 km (0.11 R)
• M11: 13,114,946 km (0.052 R)
• M12: 16,049,308 km (0.114 R)
• M13: 16,926,999 km (0.097 R)
• M14: 20,388,395 km (0.095 R)
• M15: 32,653,475 km (0.108 R)
• M16: 36,310,246 km (0.102 R)
• M17: 48,079,559 km (0.074 R)
• M18: 51,076,303 km (0.079 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 335 - 10,994 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit