🌌 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: 4.49

Radius: 1.82

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 0.51 AU - 0.59 AU

Year: 263 Days

Day: 40.3 Hours

Environment

Temp: -131 °C

Axial Tilt: 26.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.28

Radius: 1.1

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.52 AU - 0.66 AU

Year: 293 Days

Day: 19.3 Hours

Environment

Temp: -118 °C

Axial Tilt: 32.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 75,175,581 km

• M1: 58,343 km (0.056 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 194.2

Radius: 11.7

Gravity: 1.42 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.79 AU - 1.05 AU

Year: 570 Days

Day: 13.1 Hours

Environment

Temp: -151 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 75,175,581 km

• M1: 145,559 km (0.12 R)
• M2: 864,676 km (0.114 R)
• M3: 1,741,768 km (0.107 R)
• M4: 2,563,808 km (0.103 R)
• M5: 3,223,685 km (0.067 R)
• M6: 3,651,385 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 627.5

Radius: 9.3

Gravity: 7.26 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 2.51 AU - 3.71 AU

Year: 3541 Days

Day: 9.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 75,175,581 km

• M1: 115,639 km (0.081 R)
• M2: 409,001 km (0.106 R)
• M3: 854,204 km (0.032 R)
• M4: 1,170,603 km (0.101 R)
• M5: 1,555,519 km (0.081 R)
• M6: 1,920,687 km (0.025 R)
• M7: 2,343,151 km (0.104 R)
• M8: 2,711,910 km (0.072 R)
• M9: 3,394,525 km (0.09 R)
• M10: 4,079,384 km (0.03 R)
• M11: 4,386,958 km (0.111 R)
• M12: 5,173,992 km (0.058 R)
• M13: 8,240,000 km (0.094 R)
• M14: 8,805,779 km (0.048 R)
• M15: 9,284,343 km (0.034 R)
• M16: 10,093,967 km (0.111 R)
• M17: 10,824,902 km (0.055 R)
• M18: 12,120,719 km (0.06 R)
• M19: 12,620,824 km (0.107 R)
• M20: 13,134,693 km (0.103 R)
• M21: 14,607,185 km (0.105 R)
• M22: 15,436,107 km (0.052 R)
• M23: 17,761,007 km (0.083 R)
• M24: 19,620,060 km (0.088 R)
• M25: 23,162,388 km (0.078 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 478.9

Radius: 11.9

Gravity: 3.38 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 3.47 AU - 5.31 AU

Year: 5939 Days

Day: 13.6 Hours

Environment

Temp: -215 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 75,175,581 km

• M1: 156,180 km (0.119 R)
• M2: 723,754 km (0.086 R)
• M3: 1,252,433 km (0.095 R)
• M4: 2,164,532 km (0.107 R)
• M5: 4,022,986 km (0.112 R)
• M6: 4,753,921 km (0.107 R)
• M7: 5,687,113 km (0.102 R)
• M8: 6,448,416 km (0.092 R)
• M9: 6,837,371 km (0.091 R)
• M10: 8,630,301 km (0.099 R)
• M11: 9,063,537 km (0.077 R)
• M12: 12,565,473 km (0.115 R)
• M13: 13,329,619 km (0.073 R)
• M14: 15,119,857 km (0.111 R)
• M15: 16,043,324 km (0.034 R)
• M16: 16,760,347 km (0.065 R)
• M17: 20,600,375 km (0.081 R)
• M18: 30,057,952 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 971.2

Radius: 14.3

Gravity: 4.75 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 4.06 AU - 5.4 AU

Year: 6642 Days

Day: 6.5 Hours

Environment

Temp: -212 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 75,175,581 km

• M1: 178,021 km (0.073 R)
• M2: 661,522 km (0.113 R)
• M3: 1,381,985 km (0.075 R)
• M4: 2,130,124 km (0.088 R)
• M5: 2,809,598 km (0.119 R)
• M6: 3,897,174 km (0.064 R)
• M7: 5,949,956 km (0.117 R)
• M8: 7,155,416 km (0.118 R)
• M9: 11,858,773 km (0.088 R)
• M10: 13,586,030 km (0.095 R)
• M11: 14,297,816 km (0.04 R)
• M12: 16,384,108 km (0.114 R)
• M13: 19,997,196 km (0.086 R)
• M14: 21,232,426 km (0.034 R)
• M15: 22,110,715 km (0.081 R)
• M16: 24,455,662 km (0.098 R)
• M17: 26,777,720 km (0.074 R)
• M18: 28,854,437 km (0.1 R)
• M19: 30,031,473 km (0.084 R)
• M20: 30,531,280 km (0.065 R)
• M21: 33,540,291 km (0.068 R)
• M22: 38,241,105 km (0.109 R)
• M23: 40,993,108 km (0.068 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 762.3

Radius: 12.2

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 3.62 AU - 5.9 AU

Year: 6705 Days

Day: 10.5 Hours

Environment

Temp: -215 °C

Axial Tilt: 42.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 75,175,581 km

• M1: 151,692 km (0.091 R)
• M2: 688,898 km (0.083 R)
• M3: 1,216,530 km (0.101 R)
• M4: 1,920,089 km (0.1 R)
• M5: 2,434,855 km (0.061 R)
• M6: 3,000,036 km (0.08 R)
• M7: 3,628,646 km (0.059 R)
• M8: 4,804,635 km (0.114 R)
• M9: 5,511,784 km (0.079 R)
• M10: 6,119,899 km (0.118 R)
• M11: 6,561,363 km (0.069 R)
• M12: 7,024,218 km (0.071 R)
• M13: 10,851,381 km (0.053 R)
• M14: 12,548,718 km (0.059 R)
• M15: 13,832,118 km (0.043 R)
• M16: 14,775,333 km (0.077 R)
• M17: 15,201,238 km (0.113 R)
• M18: 17,186,851 km (0.101 R)
• M19: 18,276,821 km (0.119 R)
• M20: 21,589,366 km (0.109 R)
• M21: 22,777,173 km (0.067 R)
• M22: 28,338,474 km (0.107 R)
• M23: 35,173,451 km (0.084 R)
• M24: 36,816,485 km (0.078 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 240.9

Radius: 12.1

Gravity: 1.65 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 3.94 AU - 5.96 AU

Year: 7111 Days

Day: 9.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 75,175,581 km

• M1: 150,795 km (0.061 R)
• M2: 707,897 km (0.119 R)
• M3: 1,878,800 km (0.118 R)
• M4: 2,793,591 km (0.086 R)
• M5: 3,748,025 km (0.11 R)
• M6: 4,209,086 km (0.089 R)
• M7: 5,882,487 km (0.113 R)
• M8: 9,304,838 km (0.117 R)
• M9: 9,906,969 km (0.065 R)
• M10: 11,368,241 km (0.07 R)
• M11: 19,755,745 km (0.05 R)
• M12: 21,919,828 km (0.086 R)
• M13: 24,013,450 km (0.088 R)
• M14: 25,070,509 km (0.051 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 710.1

Radius: 6.2

Gravity: 18.47 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 7.07 AU - 9.47 AU

Year: 15356 Days

Day: 22.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 75,175,581 km

• M1: 81,531 km (0.113 R)
• M2: 321,935 km (0.049 R)
• M3: 709,094 km (0.049 R)
• M4: 1,818,362 km (0.095 R)
• M5: 2,545,408 km (0.06 R)
• M6: 3,757,450 km (0.101 R)
• M7: 4,719,962 km (0.071 R)
• M8: 4,992,979 km (0.093 R)
• M9: 6,072,327 km (0.072 R)
• M10: 8,090,402 km (0.086 R)
• M11: 11,161,946 km (0.062 R)
• M12: 13,457,525 km (0.098 R)
• M13: 13,868,620 km (0.097 R)
• M14: 15,299,075 km (0.063 R)
• M15: 15,521,826 km (0.069 R)
• M16: 18,872,370 km (0.109 R)
• M17: 19,387,286 km (0.105 R)
• M18: 20,445,092 km (0.073 R)
• M19: 21,263,393 km (0.041 R)
• M20: 24,249,067 km (0.052 R)
• M21: 29,749,930 km (0.092 R)
• M22: 31,874,220 km (0.066 R)
• M23: 33,221,050 km (0.112 R)
• M24: 33,469,980 km (0.12 R)
• M25: 36,158,853 km (0.078 R)
• M26: 36,422,294 km (0.083 R)
• M27: 37,086,359 km (0.09 R)
• M28: 37,758,353 km (0.085 R)
• M29: 39,823,252 km (0.079 R)
• M30: 41,384,605 km (0.035 R)
• M31: 44,477,691 km (0.084 R)
• M32: 46,935,285 km (0.068 R)
• M33: 48,836,823 km (0.103 R)
• M34: 50,296,300 km (0.078 R)
• M35: 51,617,848 km (0.086 R)
• M36: 55,022,546 km (0.045 R)
• M37: 56,248,650 km (0.059 R)
• M38: 60,220,772 km (0.091 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 688.1

Radius: 7.9

Gravity: 11.03 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 8.25 AU - 11.21 AU

Year: 19597 Days

Day: 15.3 Hours

Environment

Temp: -223 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 75,175,581 km

• M1: 98,435 km (0.101 R)
• M2: 2,291,839 km (0.08 R)
• M3: 3,428,783 km (0.075 R)
• M4: 5,821,003 km (0.103 R)
• M5: 6,625,390 km (0.115 R)
• M6: 15,439,248 km (0.086 R)
• M7: 17,392,099 km (0.077 R)
• M8: 22,881,593 km (0.119 R)
• M9: 24,229,470 km (0.075 R)
• M10: 29,184,749 km (0.11 R)
• M11: 31,017,473 km (0.079 R)
• M12: 35,045,545 km (0.081 R)
• M13: 38,971,891 km (0.106 R)
• M14: 42,871,459 km (0.1 R)
• M15: 47,851,572 km (0.091 R)
• M16: 53,742,287 km (0.114 R)
• M17: 56,116,704 km (0.1 R)
• M18: 60,682,282 km (0.078 R)
• M19: 62,855,191 km (0.09 R)
• M20: 65,489,460 km (0.083 R)
• M21: 70,977,009 km (0.113 R)
• M22: 71,411,292 km (0.088 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 354 - 13,794 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit