🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.09

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.39 AU - 0.65 AU

Year: 246 Days

Day: 40 Hours

Environment

Temp: -127 °C

Axial Tilt: 44.1 °

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: 651.9

Radius: 11.3

Gravity: 5.11 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.79 AU - 0.87 AU

Year: 496 Days

Day: 10.6 Hours

Environment

Temp: -141 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 56,205,335 km

• M1: 140,921 km (0.058 R)
• M2: 541,843 km (0.052 R)
• M3: 1,015,770 km (0.082 R)
• M4: 1,458,280 km (0.071 R)
• M5: 2,106,488 km (0.063 R)
• M6: 2,949,172 km (0.075 R)
• M7: 3,686,840 km (0.087 R)
• M8: 4,155,230 km (0.065 R)
• M9: 6,198,737 km (0.078 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 550.7

Radius: 12.7

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 0.83 AU - 1.21 AU

Year: 676 Days

Day: 14.9 Hours

Environment

Temp: -164 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,205,335 km

• M1: 161,865 km (0.025 R)
• M2: 624,571 km (0.09 R)
• M3: 1,051,673 km (0.106 R)
• M4: 1,449,304 km (0.073 R)
• M5: 1,874,312 km (0.113 R)
• M6: 2,276,580 km (0.064 R)
• M7: 2,737,043 km (0.089 R)
• M8: 4,221,502 km (0.039 R)
• M9: 4,665,210 km (0.101 R)
• M10: 5,521,807 km (0.072 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 420.5

Radius: 10.2

Gravity: 4.04 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.54 AU - 1.72 AU

Year: 1365 Days

Day: 9.8 Hours

Environment

Temp: -178 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,205,335 km

• M1: 127,607 km (0.05 R)
• M2: 447,896 km (0.108 R)
• M3: 969,544 km (0.061 R)
• M4: 1,770,491 km (0.116 R)
• M5: 2,198,640 km (0.078 R)
• M6: 3,017,688 km (0.1 R)
• M7: 3,963,296 km (0.115 R)
• M8: 4,794,013 km (0.102 R)
• M9: 5,211,691 km (0.118 R)
• M10: 6,076,965 km (0.101 R)
• M11: 7,450,423 km (0.099 R)
• M12: 9,049,026 km (0.117 R)
• M13: 10,420,988 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 201.6

Radius: 9.1

Gravity: 2.43 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 2.36 AU - 2.76 AU

Year: 2687 Days

Day: 9 Hours

Environment

Temp: -206 °C

Axial Tilt: 44.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 56,205,335 km

• M1: 113,246 km (0.119 R)
• M2: 451,038 km (0.06 R)
• M3: 829,819 km (0.107 R)
• M4: 1,116,599 km (0.103 R)
• M5: 1,605,634 km (0.082 R)
• M6: 2,185,924 km (0.095 R)
• M7: 2,681,542 km (0.099 R)
• M8: 3,435,964 km (0.078 R)
• M9: 4,179,465 km (0.117 R)
• M10: 5,534,224 km (0.114 R)
• M11: 5,845,986 km (0.064 R)
• M12: 7,942,899 km (0.091 R)
• M13: 8,573,604 km (0.086 R)
• M14: 9,967,257 km (0.116 R)
• M15: 10,599,009 km (0.074 R)
• M16: 12,052,652 km (0.117 R)
• M17: 12,578,339 km (0.082 R)
• M18: 12,885,463 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 312.3

Radius: 11.5

Gravity: 2.36 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 2.29 AU - 3.69 AU

Year: 3392 Days

Day: 9 Hours

Environment

Temp: -211 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 56,205,335 km

• M1: 143,016 km (0.062 R)
• M2: 505,192 km (0.108 R)
• M3: 1,037,312 km (0.116 R)
• M4: 1,406,070 km (0.077 R)
• M5: 2,062,655 km (0.059 R)
• M6: 2,421,690 km (0.117 R)
• M7: 2,823,061 km (0.109 R)
• M8: 3,387,494 km (0.119 R)
• M9: 4,242,895 km (0.072 R)
• M10: 4,919,077 km (0.042 R)
• M11: 5,939,484 km (0.031 R)
• M12: 7,443,691 km (0.116 R)
• M13: 8,589,611 km (0.096 R)
• M14: 9,256,069 km (0.087 R)
• M15: 10,958,493 km (0.065 R)
• M16: 13,511,680 km (0.104 R)
• M17: 15,841,218 km (0.054 R)
• M18: 17,256,862 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 457.1

Radius: 12.6

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 3.16 AU - 5 AU

Year: 5406 Days

Day: 5.8 Hours

Environment

Temp: -206 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 56,205,335 km

• M1: 159,172 km (0.07 R)
• M2: 553,363 km (0.04 R)
• M3: 1,079,498 km (0.116 R)
• M4: 1,697,487 km (0.097 R)
• M5: 2,559,769 km (0.087 R)
• M6: 3,570,452 km (0.112 R)
• M7: 4,606,567 km (0.107 R)
• M8: 7,995,408 km (0.111 R)
• M9: 11,357,470 km (0.071 R)
• M10: 12,677,522 km (0.096 R)
• M11: 15,175,058 km (0.04 R)
• M12: 17,071,810 km (0.076 R)
• M13: 17,860,789 km (0.091 R)
• M14: 19,774,295 km (0.114 R)
• M15: 24,155,867 km (0.074 R)
• M16: 25,461,857 km (0.095 R)
• M17: 26,411,654 km (0.082 R)
• M18: 26,895,453 km (0.088 R)
• M19: 27,714,801 km (0.052 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 686.6

Radius: 14.9

Gravity: 3.09 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 4.17 AU - 4.59 AU

Year: 6013 Days

Day: 10.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 56,205,335 km

• M1: 185,651 km (0.064 R)
• M2: 661,073 km (0.042 R)
• M3: 1,278,314 km (0.067 R)
• M4: 2,312,035 km (0.101 R)
• M5: 2,983,131 km (0.119 R)
• M6: 3,580,924 km (0.028 R)
• M7: 4,562,885 km (0.114 R)
• M8: 6,447,070 km (0.046 R)
• M9: 6,990,260 km (0.111 R)
• M10: 8,603,822 km (0.032 R)
• M11: 9,391,306 km (0.068 R)
• M12: 10,638,952 km (0.102 R)
• M13: 11,645,297 km (0.119 R)
• M14: 12,609,754 km (0.105 R)
• M15: 14,813,780 km (0.113 R)
• M16: 15,763,576 km (0.076 R)
• M17: 16,753,765 km (0.098 R)
• M18: 19,832,040 km (0.094 R)
• M19: 23,427,924 km (0.098 R)
• M20: 25,463,203 km (0.113 R)
• M21: 32,669,033 km (0.046 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 338.1

Radius: 3

Gravity: 37.57 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 5.64 AU - 8.96 AU

Year: 12939 Days

Day: 22.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 56,205,335 km

• M1: 39,643 km (0.103 R)
• M2: 133,740 km (0.038 R)
• M3: 424,559 km (0.06 R)
• M4: 562,937 km (0.106 R)
• M5: 658,530 km (0.062 R)
• M6: 818,151 km (0.116 R)
• M7: 931,696 km (0.11 R)
• M8: 1,898,846 km (0.11 R)
• M9: 2,082,103 km (0.105 R)
• M10: 2,388,330 km (0.075 R)
• M11: 2,662,393 km (0.114 R)
• M12: 3,067,205 km (0.115 R)
• M13: 3,660,660 km (0.064 R)
• M14: 4,411,791 km (0.108 R)
• M15: 4,914,888 km (0.102 R)
• M16: 5,260,160 km (0.112 R)
• M17: 6,247,805 km (0.072 R)
• M18: 6,690,316 km (0.096 R)
• M19: 7,074,783 km (0.109 R)
• M20: 12,666,601 km (0.091 R)
• M21: 12,840,883 km (0.044 R)
• M22: 13,614,902 km (0.057 R)
• M23: 14,293,628 km (0.059 R)
• M24: 14,865,540 km (0.067 R)
• M25: 17,234,722 km (0.029 R)
• M26: 17,520,603 km (0.075 R)
• M27: 17,809,477 km (0.118 R)
• M28: 20,634,932 km (0.048 R)
• M29: 25,457,070 km (0.07 R)
• M30: 33,904,413 km (0.119 R)
• M31: 37,484,738 km (0.107 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 206

Radius: 8

Gravity: 3.22 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 10.67 AU - 10.85 AU

Year: 23154 Days

Day: 16 Hours

Environment

Temp: -226 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 56,205,335 km

• M1: 99,483 km (0.12 R)
• M2: 375,191 km (0.078 R)
• M3: 713,283 km (0.036 R)
• M4: 1,074,262 km (0.104 R)
• M5: 1,496,428 km (0.105 R)
• M6: 2,525,661 km (0.091 R)
• M7: 2,872,878 km (0.105 R)
• M8: 3,427,586 km (0.098 R)
• M9: 4,023,285 km (0.11 R)
• M10: 4,376,187 km (0.102 R)
• M11: 4,717,718 km (0.088 R)
• M12: 7,454,761 km (0.078 R)
• M13: 11,046,456 km (0.031 R)
• M14: 11,622,408 km (0.041 R)
• M15: 12,647,453 km (0.037 R)
• M16: 15,938,157 km (0.086 R)
• M17: 21,040,941 km (0.12 R)
• M18: 21,746,743 km (0.111 R)
• M19: 23,112,572 km (0.104 R)
• M20: 24,534,649 km (0.054 R)
• M21: 25,316,597 km (0.055 R)
• M22: 28,184,239 km (0.091 R)
• M23: 29,916,433 km (0.083 R)
• M24: 30,696,137 km (0.069 R)
• M25: 31,718,489 km (0.118 R)
• M26: 34,677,235 km (0.053 R)
• M27: 39,253,733 km (0.113 R)
• M28: 41,962,502 km (0.107 R)
• M29: 47,748,948 km (0.113 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 313 - 15,725 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit