🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.14

Radius: 0.46

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 0.47 AU - 0.63 AU

Year: 268 Days

Day: 28.5 Hours

Environment

Temp: -119 °C

Axial Tilt: 45.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 95,918,574 km

• M1: 11,818 km (0.105 R)
• M2: 20,495 km (0.086 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 884.9

Radius: 14.5

Gravity: 4.21 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.61 AU - 0.95 AU

Year: 452 Days

Day: 8.1 Hours

Environment

Temp: -140 °C

Axial Tilt: 75.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 95,918,574 km

• M1: 180,714 km (0.079 R)
• M2: 637,437 km (0.034 R)
• M3: 1,091,466 km (0.058 R)
• M4: 1,558,062 km (0.079 R)
• M5: 2,109,480 km (0.09 R)
• M6: 2,686,778 km (0.063 R)
• M7: 3,344,859 km (0.061 R)
• M8: 4,292,711 km (0.054 R)
• M9: 5,446,709 km (0.106 R)
• M10: 6,024,306 km (0.095 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 539.9

Radius: 9.7

Gravity: 5.74 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.85 AU - 1.05 AU

Year: 607 Days

Day: 14 Hours

Environment

Temp: -163 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 95,918,574 km

• M1: 120,576 km (0.075 R)
• M2: 429,047 km (0.04 R)
• M3: 770,579 km (0.101 R)
• M4: 1,155,644 km (0.066 R)
• M5: 1,738,028 km (0.068 R)
• M6: 2,115,015 km (0.071 R)
• M7: 2,855,225 km (0.112 R)
• M8: 3,434,468 km (0.085 R)
• M9: 3,785,873 km (0.077 R)
• M10: 4,826,925 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 218.1

Radius: 9.8

Gravity: 2.27 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.83 AU - 1.23 AU

Year: 686 Days

Day: 6.6 Hours

Environment

Temp: -158 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 95,918,574 km

• M1: 121,922 km (0.108 R)
• M2: 427,850 km (0.042 R)
• M3: 788,082 km (0.102 R)
• M4: 1,151,904 km (0.029 R)
• M5: 1,677,441 km (0.086 R)
• M6: 2,224,820 km (0.117 R)
• M7: 3,520,337 km (0.1 R)
• M8: 3,825,816 km (0.082 R)
• M9: 4,462,504 km (0.082 R)
• M10: 5,340,195 km (0.072 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 668

Radius: 9.3

Gravity: 7.72 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 1.64 AU - 1.76 AU

Year: 1454 Days

Day: 11.3 Hours

Environment

Temp: -181 °C

Axial Tilt: 76.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 95,918,574 km

• M1: 115,639 km (0.066 R)
• M2: 526,734 km (0.042 R)
• M3: 906,413 km (0.12 R)
• M4: 1,714,990 km (0.107 R)
• M5: 2,099,457 km (0.063 R)
• M6: 2,818,573 km (0.117 R)
• M7: 3,281,130 km (0.048 R)
• M8: 4,818,099 km (0.115 R)
• M9: 5,309,827 km (0.066 R)
• M10: 5,633,856 km (0.086 R)
• M11: 5,948,311 km (0.114 R)
• M12: 7,090,640 km (0.111 R)
• M13: 7,457,753 km (0.115 R)
• M14: 7,948,284 km (0.058 R)
• M15: 8,287,124 km (0.109 R)
• M16: 9,424,367 km (0.095 R)
• M17: 10,030,687 km (0.028 R)
• M18: 10,326,741 km (0.104 R)
• M19: 10,764,764 km (0.103 R)
• M20: 12,415,127 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 827.6

Radius: 14

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 2.18 AU - 2.66 AU

Year: 2470 Days

Day: 8.6 Hours

Environment

Temp: -194 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 95,918,574 km

• M1: 174,132 km (0.09 R)
• M2: 645,066 km (0.04 R)
• M3: 1,487,751 km (0.114 R)
• M4: 2,432,761 km (0.116 R)
• M5: 2,959,046 km (0.107 R)
• M6: 3,452,569 km (0.103 R)
• M7: 4,876,143 km (0.118 R)
• M8: 6,328,140 km (0.089 R)
• M9: 6,775,587 km (0.086 R)
• M10: 8,213,970 km (0.109 R)
• M11: 9,023,145 km (0.111 R)
• M12: 9,884,679 km (0.107 R)
• M13: 13,519,908 km (0.087 R)
• M14: 14,029,588 km (0.076 R)
• M15: 16,301,680 km (0.041 R)
• M16: 19,212,406 km (0.066 R)
• M17: 20,095,482 km (0.069 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 190.3

Radius: 9.1

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 2.81 AU - 4.15 AU

Year: 4259 Days

Day: 11.6 Hours

Environment

Temp: -209 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 95,918,574 km

• M1: 113,246 km (0.112 R)
• M2: 415,284 km (0.061 R)
• M3: 705,952 km (0.116 R)
• M4: 1,370,466 km (0.036 R)
• M5: 2,034,381 km (0.081 R)
• M6: 2,501,875 km (0.038 R)
• M7: 2,806,905 km (0.103 R)
• M8: 3,235,652 km (0.091 R)
• M9: 4,086,266 km (0.089 R)
• M10: 5,239,665 km (0.089 R)
• M11: 5,668,712 km (0.054 R)
• M12: 7,012,699 km (0.105 R)
• M13: 7,357,522 km (0.101 R)
• M14: 7,835,039 km (0.078 R)
• M15: 8,333,050 km (0.107 R)
• M16: 8,885,216 km (0.028 R)
• M17: 9,531,030 km (0.073 R)
• M18: 9,918,937 km (0.113 R)
• M19: 10,764,315 km (0.089 R)
• M20: 11,458,748 km (0.12 R)
• M21: 13,281,748 km (0.047 R)
• M22: 14,171,257 km (0.109 R)
• M23: 16,467,434 km (0.086 R)
• M24: 17,703,861 km (0.074 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.14 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 766.6

Radius: 4.1

Gravity: 45.6 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 5.29 AU - 6.99 AU

Year: 9981 Days

Day: 19.6 Hours

Environment

Temp: -214 °C

Axial Tilt: 121.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 95,918,574 km

• M1: 51,462 km (0.08 R)
• M2: 218,562 km (0.038 R)
• M3: 380,876 km (0.072 R)
• M4: 883,974 km (0.102 R)
• M5: 1,544,448 km (0.119 R)
• M6: 1,851,573 km (0.101 R)
• M7: 2,818,573 km (0.095 R)
• M8: 3,782,283 km (0.048 R)
• M9: 3,943,699 km (0.105 R)
• M10: 4,636,038 km (0.077 R)
• M11: 6,521,570 km (0.038 R)
• M12: 10,615,315 km (0.067 R)
• M13: 15,388,684 km (0.102 R)
• M14: 16,575,294 km (0.099 R)
• M15: 21,334,152 km (0.115 R)
• M16: 22,983,918 km (0.092 R)
• M17: 24,345,109 km (0.109 R)
• M18: 34,700,124 km (0.076 R)
• M19: 46,781,498 km (0.099 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 424.3

Radius: 4.7

Gravity: 19.21 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 7.73 AU - 9.97 AU

Year: 17271 Days

Day: 18.1 Hours

Environment

Temp: -231 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 95,918,574 km

• M1: 58,493 km (0.032 R)
• M2: 290,220 km (0.059 R)
• M3: 467,942 km (0.077 R)
• M4: 736,770 km (0.103 R)
• M5: 2,113,070 km (0.111 R)
• M6: 3,034,742 km (0.073 R)
• M7: 4,258,154 km (0.11 R)
• M8: 8,178,366 km (0.067 R)
• M9: 9,310,971 km (0.092 R)
• M10: 9,834,564 km (0.055 R)
• M11: 10,883,095 km (0.094 R)
• M12: 11,761,983 km (0.065 R)
• M13: 13,994,881 km (0.054 R)
• M14: 14,198,484 km (0.056 R)
• M15: 18,210,250 km (0.112 R)
• M16: 18,862,347 km (0.112 R)
• M17: 21,990,289 km (0.069 R)
• M18: 22,543,202 km (0.116 R)
• M19: 22,823,100 km (0.091 R)
• M20: 24,847,608 km (0.114 R)
• M21: 26,159,132 km (0.114 R)
• M22: 35,511,094 km (0.108 R)
• M23: 40,238,087 km (0.108 R)
• M24: 41,342,718 km (0.117 R)
• M25: 42,325,576 km (0.12 R)
• M26: 44,484,124 km (0.068 R)
• M27: 44,777,335 km (0.074 R)
• M28: 50,437,371 km (0.097 R)
• M29: 51,076,453 km (0.035 R)
• M30: 52,370,774 km (0.034 R)
• M31: 55,871,962 km (0.057 R)

Planet 10 - Ice Giant

Semi-Major Axis: 11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 958.3

Radius: 7.4

Gravity: 17.5 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 9.74 AU - 12.27 AU

Year: 23933 Days

Day: 18.8 Hours

Environment

Temp: -238 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 95,918,574 km

• M1: 92,152 km (0.105 R)
• M2: 506,987 km (0.067 R)
• M3: 1,098,497 km (0.091 R)
• M4: 2,020,469 km (0.119 R)
• M5: 2,784,166 km (0.098 R)
• M6: 3,792,306 km (0.119 R)
• M7: 5,185,960 km (0.063 R)
• M8: 6,224,917 km (0.092 R)
• M9: 7,344,807 km (0.087 R)
• M10: 8,254,960 km (0.113 R)
• M11: 8,941,166 km (0.104 R)
• M12: 9,914,599 km (0.105 R)
• M13: 11,574,238 km (0.1 R)
• M14: 14,602,099 km (0.117 R)
• M15: 17,375,493 km (0.09 R)
• M16: 18,214,738 km (0.071 R)
• M17: 19,672,868 km (0.118 R)
• M18: 19,973,560 km (0.12 R)
• M19: 20,277,393 km (0.054 R)
• M20: 21,102,575 km (0.082 R)
• M21: 21,842,785 km (0.058 R)
• M22: 24,167,386 km (0.043 R)
• M23: 25,686,403 km (0.118 R)
• M24: 25,925,610 km (0.099 R)
• M25: 39,238,923 km (0.099 R)
• M26: 43,669,713 km (0.106 R)
• M27: 56,686,224 km (0.048 R)
• M28: 70,182,644 km (0.077 R)
• M29: 74,710,972 km (0.097 R)
• M30: 94,204,023 km (0.114 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 437 - 14,833 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit