🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.49 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.97 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.08

Radius: 1.03

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.94 AU - 1 AU

Year: 360 Days

Day: 28 Hours

Environment

Temp: 6 °C

Axial Tilt: 2.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 1.02 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.42

Radius: 0.71

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.77 AU - 1.27 AU

Year: 388 Days

Day: 19.7 Hours

Environment

Temp: 27 °C

Axial Tilt: 4.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 44,597,449 km

• M1: 426,204 km (0.09 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.07 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.49

Radius: 1.65

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.85 AU - 1.29 AU

Year: 417 Days

Day: 22.5 Hours

Environment

Temp: 8 °C

Axial Tilt: 37.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.53

Radius: 1.19

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 1.1 AU - 1.54 AU

Year: 571 Days

Day: 45.8 Hours

Environment

Temp: -42 °C

Axial Tilt: 51.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.6

Radius: 1.47

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 1.44 AU - 1.74 AU

Year: 755 Days

Day: 15 Hours

Environment

Temp: -59 °C

Axial Tilt: 26.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 10.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 684.4

Radius: 9.6

Gravity: 7.43 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 8.45 AU - 13.39 AU

Year: 13594 Days

Day: 5.7 Hours

Environment

Temp: -189 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 44,597,449 km

• M1: 122,072 km (0.115 R)
• M2: 528,230 km (0.115 R)
• M3: 833,410 km (0.058 R)
• M4: 1,353,262 km (0.052 R)
• M5: 2,078,662 km (0.079 R)
• M6: 2,834,730 km (0.087 R)
• M7: 3,960,454 km (0.111 R)
• M8: 4,688,248 km (0.091 R)
• M9: 8,659,922 km (0.042 R)
• M10: 9,463,262 km (0.102 R)
• M11: 10,151,861 km (0.116 R)
• M12: 13,050,619 km (0.113 R)
• M13: 16,914,732 km (0.099 R)
• M14: 17,533,768 km (0.091 R)
• M15: 18,982,025 km (0.118 R)
• M16: 22,298,610 km (0.079 R)
• M17: 22,761,914 km (0.117 R)
• M18: 23,900,205 km (0.103 R)
• M19: 25,678,026 km (0.079 R)
• M20: 26,495,877 km (0.092 R)
• M21: 27,015,730 km (0.076 R)
• M22: 30,053,763 km (0.103 R)
• M23: 30,961,972 km (0.109 R)
• M24: 35,779,323 km (0.097 R)
• M25: 36,414,665 km (0.084 R)
• M26: 42,758,662 km (0.081 R)
• M27: 46,717,021 km (0.083 R)
• M28: 51,716,732 km (0.09 R)
• M29: 57,928,933 km (0.078 R)

Planet 7 - Ice Giant

Semi-Major Axis: 17.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 762.7

Radius: 7

Gravity: 15.57 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 14.92 AU - 19.98 AU

Year: 27461 Days

Day: 20.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 44,597,449 km

• M1: 87,216 km (0.11 R)
• M2: 354,098 km (0.082 R)
• M3: 2,155,855 km (0.12 R)
• M4: 2,560,667 km (0.088 R)
• M5: 3,713,767 km (0.09 R)
• M6: 3,980,650 km (0.043 R)
• M7: 4,405,059 km (0.099 R)
• M8: 5,017,513 km (0.106 R)
• M9: 5,728,850 km (0.047 R)
• M10: 6,944,034 km (0.092 R)
• M11: 7,298,581 km (0.108 R)
• M12: 9,377,243 km (0.099 R)
• M13: 10,518,825 km (0.068 R)
• M14: 10,851,830 km (0.07 R)
• M15: 12,999,008 km (0.055 R)
• M16: 13,932,050 km (0.072 R)
• M17: 18,303,599 km (0.113 R)
• M18: 21,428,848 km (0.098 R)
• M19: 30,423,719 km (0.09 R)
• M20: 32,342,162 km (0.067 R)
• M21: 34,339,593 km (0.117 R)
• M22: 35,220,425 km (0.07 R)
• M23: 36,266,862 km (0.11 R)
• M24: 38,894,250 km (0.084 R)
• M25: 40,823,613 km (0.12 R)
• M26: 50,110,799 km (0.071 R)
• M27: 50,486,589 km (0.095 R)
• M28: 52,974,102 km (0.117 R)
• M29: 54,743,396 km (0.052 R)
• M30: 60,499,473 km (0.113 R)
• M31: 60,925,378 km (0.105 R)
• M32: 65,968,472 km (0.065 R)
• M33: 81,970,358 km (0.092 R)
• M34: 82,230,808 km (0.072 R)
• M35: 83,015,598 km (0.097 R)
• M36: 86,474,301 km (0.074 R)
• M37: 90,027,699 km (0.057 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 353.2

Radius: 3.7

Gravity: 25.8 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 15.46 AU - 20.08 AU

Year: 28220 Days

Day: 21.4 Hours

Environment

Temp: -201 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 44,597,449 km

• M1: 46,076 km (0.105 R)
• M2: 342,878 km (0.106 R)
• M3: 659,727 km (0.099 R)
• M4: 1,106,426 km (0.089 R)
• M5: 1,394,252 km (0.093 R)
• M6: 2,265,660 km (0.086 R)
• M7: 2,878,562 km (0.115 R)
• M8: 3,168,782 km (0.088 R)
• M9: 3,900,166 km (0.117 R)
• M10: 6,316,770 km (0.086 R)
• M11: 7,083,010 km (0.107 R)
• M12: 7,808,710 km (0.095 R)
• M13: 8,215,466 km (0.087 R)
• M14: 9,692,446 km (0.083 R)
• M15: 12,259,845 km (0.105 R)
• M16: 12,808,719 km (0.064 R)
• M17: 13,018,755 km (0.08 R)
• M18: 15,482,482 km (0.087 R)
• M19: 17,889,512 km (0.097 R)
• M20: 20,918,719 km (0.085 R)
• M21: 22,604,986 km (0.072 R)
• M22: 23,221,180 km (0.032 R)
• M23: 26,020,904 km (0.103 R)
• M24: 27,155,005 km (0.06 R)
• M25: 28,797,441 km (0.026 R)
• M26: 31,383,689 km (0.046 R)
• M27: 34,389,110 km (0.112 R)
• M28: 36,169,773 km (0.106 R)
• M29: 42,963,760 km (0.098 R)
• M30: 47,322,294 km (0.109 R)
• M31: 49,008,562 km (0.109 R)
• M32: 52,322,005 km (0.094 R)
• M33: 54,124,510 km (0.075 R)
• M34: 57,852,788 km (0.09 R)
• M35: 59,003,794 km (0.112 R)
• M36: 64,168,062 km (0.101 R)
• M37: 65,815,733 km (0.076 R)
• M38: 67,280,296 km (0.117 R)
• M39: 70,709,229 km (0.083 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 62.1

Radius: 6.7

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 15.11 AU - 21.75 AU

Year: 29807 Days

Day: 17.2 Hours

Environment

Temp: -195 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 44,597,449 km

• M1: 83,326 km (0.1 R)
• M2: 902,374 km (0.05 R)
• M3: 1,124,677 km (0.101 R)
• M4: 1,697,637 km (0.087 R)
• M5: 2,091,677 km (0.053 R)
• M6: 2,889,632 km (0.112 R)
• M7: 4,617,039 km (0.098 R)
• M8: 5,547,987 km (0.112 R)
• M9: 7,170,824 km (0.104 R)
• M10: 11,108,240 km (0.108 R)
• M11: 11,862,214 km (0.065 R)
• M12: 12,195,518 km (0.025 R)
• M13: 13,712,739 km (0.12 R)
• M14: 14,391,016 km (0.095 R)
• M15: 15,814,290 km (0.111 R)
• M16: 18,341,746 km (0.117 R)
• M17: 29,904,315 km (0.047 R)
• M18: 32,210,666 km (0.092 R)
• M19: 32,751,013 km (0.117 R)
• M20: 34,859,146 km (0.068 R)
• M21: 36,586,104 km (0.104 R)
• M22: 38,611,360 km (0.103 R)
• M23: 39,713,298 km (0.055 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: 236 - 16,294 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit