🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.02

Radius: 1.01

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 0.54 AU - 0.64 AU

Year: 293 Days

Day: 15.1 Hours

Environment

Temp: -124 °C

Axial Tilt: 142.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 90,294,452 km

• M1: 277,654 km (0.087 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 428.6

Radius: 11.9

Gravity: 3.03 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.65 AU - 0.75 AU

Year: 378 Days

Day: 6.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 90,294,452 km

• M1: 148,102 km (0.112 R)
• M2: 686,953 km (0.046 R)
• M3: 1,075,609 km (0.109 R)
• M4: 1,450,950 km (0.103 R)
• M5: 2,064,451 km (0.108 R)
• M6: 2,550,494 km (0.049 R)
• M7: 3,071,843 km (0.087 R)
• M8: 3,472,765 km (0.102 R)
• M9: 4,512,321 km (0.064 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 640.5

Radius: 12.6

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.62 AU - 0.9 AU

Year: 428 Days

Day: 10.2 Hours

Environment

Temp: -150 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 90,294,452 km

• M1: 156,779 km (0.108 R)
• M2: 549,473 km (0.085 R)
• M3: 945,309 km (0.062 R)
• M4: 1,343,239 km (0.081 R)
• M5: 2,028,697 km (0.118 R)
• M6: 2,499,930 km (0.028 R)
• M7: 2,969,219 km (0.081 R)
• M8: 3,380,014 km (0.111 R)
• M9: 4,208,487 km (0.086 R)
• M10: 4,968,145 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 133.9

Radius: 13.1

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.81 AU - 1.15 AU

Year: 626 Days

Day: 13.4 Hours

Environment

Temp: -156 °C

Axial Tilt: 43.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 90,294,452 km

• M1: 163,211 km (0.101 R)
• M2: 896,989 km (0.071 R)
• M3: 1,344,735 km (0.074 R)
• M4: 1,874,910 km (0.118 R)
• M5: 2,492,301 km (0.086 R)
• M6: 2,916,261 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 345.8

Radius: 9.1

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.96 AU - 2.82 AU

Year: 2386 Days

Day: 10.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 90,294,452 km

• M1: 113,246 km (0.087 R)
• M2: 494,870 km (0.026 R)
• M3: 1,031,627 km (0.117 R)
• M4: 1,396,945 km (0.114 R)
• M5: 2,161,540 km (0.051 R)
• M6: 3,704,043 km (0.032 R)
• M7: 4,225,691 km (0.112 R)
• M8: 4,878,087 km (0.103 R)
• M9: 6,815,829 km (0.096 R)
• M10: 7,941,403 km (0.089 R)
• M11: 10,452,403 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 679.4

Radius: 8.5

Gravity: 9.4 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 2.1 AU - 3.42 AU

Year: 2961 Days

Day: 12.6 Hours

Environment

Temp: -210 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 90,294,452 km

• M1: 105,766 km (0.044 R)
• M2: 387,010 km (0.073 R)
• M3: 681,867 km (0.055 R)
• M4: 1,193,342 km (0.04 R)
• M5: 1,682,228 km (0.113 R)
• M6: 2,043,956 km (0.099 R)
• M7: 2,606,743 km (0.057 R)
• M8: 4,335,645 km (0.032 R)
• M9: 4,623,921 km (0.119 R)
• M10: 5,644,328 km (0.104 R)
• M11: 6,043,006 km (0.068 R)
• M12: 6,517,381 km (0.115 R)
• M13: 7,321,619 km (0.083 R)
• M14: 8,123,912 km (0.095 R)
• M15: 8,806,976 km (0.104 R)
• M16: 9,343,883 km (0.034 R)
• M17: 9,940,629 km (0.059 R)
• M18: 10,602,151 km (0.079 R)
• M19: 13,172,841 km (0.118 R)
• M20: 13,685,662 km (0.114 R)
• M21: 14,066,688 km (0.12 R)
• M22: 16,665,502 km (0.099 R)
• M23: 17,100,383 km (0.062 R)
• M24: 18,106,429 km (0.079 R)
• M25: 20,113,434 km (0.037 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 408.4

Radius: 7.5

Gravity: 7.26 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 8.52 AU - 10.94 AU

Year: 19597 Days

Day: 18.4 Hours

Environment

Temp: -238 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 90,294,452 km

• M1: 116,836 km (0.094 R)
• M2: 597,943 km (0.083 R)
• M3: 933,042 km (0.102 R)
• M4: 1,492,987 km (0.092 R)
• M5: 1,830,779 km (0.062 R)
• M6: 2,199,388 km (0.078 R)
• M7: 3,393,329 km (0.089 R)
• M8: 4,283,885 km (0.036 R)
• M9: 7,334,634 km (0.05 R)
• M10: 11,531,602 km (0.053 R)
• M11: 14,271,637 km (0.114 R)
• M12: 16,017,743 km (0.103 R)
• M13: 19,580,716 km (0.105 R)
• M14: 24,033,496 km (0.068 R)
• M15: 25,968,246 km (0.087 R)
• M16: 28,335,333 km (0.103 R)
• M17: 36,819,178 km (0.103 R)
• M18: 38,971,143 km (0.111 R)
• M19: 41,490,670 km (0.059 R)
• M20: 43,082,691 km (0.074 R)
• M21: 45,318,730 km (0.069 R)
• M22: 46,388,205 km (0.097 R)
• M23: 48,418,847 km (0.082 R)
• M24: 60,932,559 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 917

Radius: 6

Gravity: 25.47 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 9.28 AU - 11.96 AU

Year: 22346 Days

Day: 18 Hours

Environment

Temp: -239 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 90,294,452 km

• M1: 74,949 km (0.076 R)
• M2: 268,229 km (0.098 R)
• M3: 636,689 km (0.114 R)
• M4: 840,590 km (0.099 R)
• M5: 1,535,622 km (0.114 R)
• M6: 2,141,194 km (0.106 R)
• M7: 2,486,317 km (0.109 R)
• M8: 3,058,678 km (0.053 R)
• M9: 3,346,355 km (0.105 R)
• M10: 3,844,216 km (0.11 R)
• M11: 5,263,451 km (0.111 R)
• M12: 6,569,590 km (0.097 R)
• M13: 7,348,247 km (0.105 R)
• M14: 7,603,761 km (0.093 R)
• M15: 8,799,048 km (0.097 R)
• M16: 10,819,367 km (0.086 R)
• M17: 11,693,766 km (0.113 R)
• M18: 12,614,392 km (0.072 R)
• M19: 15,414,864 km (0.109 R)
• M20: 17,047,874 km (0.08 R)
• M21: 17,405,862 km (0.095 R)
• M22: 18,416,096 km (0.102 R)
• M23: 21,060,538 km (0.069 R)
• M24: 28,193,065 km (0.099 R)
• M25: 31,419,592 km (0.059 R)
• M26: 39,992,448 km (0.099 R)
• M27: 57,860,716 km (0.083 R)
• M28: 62,399,067 km (0.087 R)
• M29: 63,462,708 km (0.097 R)
• M30: 70,327,754 km (0.067 R)
• M31: 71,017,251 km (0.082 R)
• M32: 78,654,671 km (0.117 R)
• M33: 79,149,391 km (0.063 R)
• M34: 83,438,661 km (0.094 R)
• M35: 83,695,670 km (0.108 R)
• M36: 86,295,083 km (0.115 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: 339 - 14,199 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit