🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.79

Radius: 1.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.55 AU - 0.67 AU

Year: 313 Days

Day: 14.8 Hours

Environment

Temp: -138 °C

Axial Tilt: 31 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 40,252,759 km

• M1: 129,402 km (0.095 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.3

Radius: 8.3

Gravity: 5.11 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.78 AU - 0.92 AU

Year: 514 Days

Day: 5.4 Hours

Environment

Temp: -151 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 40,252,759 km

• M1: 103,522 km (0.071 R)
• M2: 364,869 km (0.076 R)
• M3: 715,826 km (0.117 R)
• M4: 1,047,185 km (0.085 R)
• M5: 1,461,721 km (0.112 R)
• M6: 2,247,409 km (0.099 R)
• M7: 2,517,433 km (0.113 R)
• M8: 2,859,862 km (0.073 R)
• M9: 3,189,127 km (0.099 R)
• M10: 3,449,577 km (0.117 R)
• M11: 4,210,582 km (0.119 R)
• M12: 4,680,768 km (0.117 R)
• M13: 5,093,957 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 154.5

Radius: 9.5

Gravity: 1.71 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 0.81 AU - 1.23 AU

Year: 676 Days

Day: 13 Hours

Environment

Temp: -166 °C

Axial Tilt: 44.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 40,252,759 km

• M1: 118,182 km (0.099 R)
• M2: 420,370 km (0.118 R)
• M3: 774,618 km (0.109 R)
• M4: 1,570,628 km (0.106 R)
• M5: 2,016,430 km (0.076 R)
• M6: 3,069,898 km (0.071 R)
• M7: 3,549,509 km (0.084 R)
• M8: 3,929,188 km (0.056 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 262.4

Radius: 13.8

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 1.88 AU - 2.04 AU

Year: 1800 Days

Day: 12.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 40,252,759 km

• M1: 171,589 km (0.074 R)
• M2: 601,084 km (0.034 R)
• M3: 1,040,304 km (0.05 R)
• M4: 1,681,480 km (0.108 R)
• M5: 2,259,676 km (0.101 R)
• M6: 2,775,788 km (0.113 R)
• M7: 3,327,206 km (0.11 R)
• M8: 4,148,798 km (0.05 R)
• M9: 4,911,597 km (0.084 R)
• M10: 6,130,371 km (0.084 R)
• M11: 7,643,254 km (0.041 R)
• M12: 8,652,292 km (0.038 R)
• M13: 9,599,097 km (0.114 R)
• M14: 10,424,279 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 536.5

Radius: 12.5

Gravity: 3.43 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 2.36 AU - 2.7 AU

Year: 2640 Days

Day: 14.1 Hours

Environment

Temp: -205 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 40,252,759 km

• M1: 155,582 km (0.066 R)
• M2: 551,119 km (0.074 R)
• M3: 982,559 km (0.026 R)
• M4: 1,425,369 km (0.076 R)
• M5: 2,112,023 km (0.085 R)
• M6: 2,793,890 km (0.107 R)
• M7: 3,458,852 km (0.113 R)
• M8: 3,876,679 km (0.093 R)
• M9: 5,244,453 km (0.085 R)
• M10: 6,472,202 km (0.095 R)
• M11: 9,247,542 km (0.095 R)
• M12: 10,916,605 km (0.07 R)
• M13: 13,122,725 km (0.093 R)
• M14: 15,368,638 km (0.063 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 782.8

Radius: 13.7

Gravity: 4.17 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 4.61 AU - 4.79 AU

Year: 6684 Days

Day: 8.5 Hours

Environment

Temp: -209 °C

Axial Tilt: 42.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 40,252,759 km

• M1: 170,542 km (0.078 R)
• M2: 788,082 km (0.111 R)
• M3: 1,263,204 km (0.1 R)
• M4: 2,779,828 km (0.105 R)
• M5: 3,419,359 km (0.084 R)
• M6: 3,931,432 km (0.039 R)
• M7: 6,725,920 km (0.059 R)
• M8: 7,159,604 km (0.058 R)
• M9: 8,083,671 km (0.032 R)
• M10: 10,309,986 km (0.101 R)
• M11: 13,252,576 km (0.113 R)
• M12: 15,252,999 km (0.11 R)
• M13: 16,132,634 km (0.083 R)
• M14: 17,112,351 km (0.109 R)
• M15: 18,549,986 km (0.07 R)
• M16: 20,665,899 km (0.113 R)
• M17: 21,821,393 km (0.094 R)
• M18: 22,295,618 km (0.066 R)
• M19: 27,058,365 km (0.097 R)
• M20: 27,790,048 km (0.103 R)
• M21: 28,440,949 km (0.048 R)
• M22: 31,147,025 km (0.094 R)
• M23: 34,232,182 km (0.087 R)
• M24: 37,178,212 km (0.074 R)
• M25: 38,082,681 km (0.049 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 526.6

Radius: 14.3

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 4.74 AU - 6.48 AU

Year: 8717 Days

Day: 10.8 Hours

Environment

Temp: -214 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 40,252,759 km

• M1: 177,872 km (0.034 R)
• M2: 1,244,205 km (0.056 R)
• M3: 2,182,035 km (0.056 R)
• M4: 5,104,579 km (0.115 R)
• M5: 6,424,331 km (0.05 R)
• M6: 8,454,075 km (0.079 R)
• M7: 8,924,111 km (0.115 R)
• M8: 10,782,566 km (0.108 R)
• M9: 11,438,852 km (0.095 R)
• M10: 13,685,064 km (0.12 R)
• M11: 14,215,089 km (0.118 R)
• M12: 16,081,622 km (0.082 R)
• M13: 17,619,637 km (0.053 R)
• M14: 18,890,322 km (0.106 R)
• M15: 20,755,209 km (0.067 R)
• M16: 27,921,844 km (0.095 R)
• M17: 31,341,352 km (0.045 R)
• M18: 39,591,376 km (0.097 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 299.8

Radius: 6.1

Gravity: 8.06 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 5.72 AU - 7.88 AU

Year: 11632 Days

Day: 23.3 Hours

Environment

Temp: -232 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 40,252,759 km

• M1: 76,594 km (0.104 R)
• M2: 545,883 km (0.116 R)
• M3: 875,447 km (0.063 R)
• M4: 1,331,571 km (0.081 R)
• M5: 1,769,144 km (0.076 R)
• M6: 2,045,601 km (0.079 R)
• M7: 2,245,763 km (0.118 R)
• M8: 2,627,986 km (0.075 R)
• M9: 3,498,346 km (0.063 R)
• M10: 5,790,485 km (0.087 R)
• M11: 6,870,282 km (0.081 R)
• M12: 9,979,076 km (0.092 R)
• M13: 10,957,446 km (0.096 R)
• M14: 12,432,181 km (0.074 R)
• M15: 12,764,588 km (0.044 R)
• M16: 28,782,930 km (0.084 R)
• M17: 29,757,111 km (0.101 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 487 - 11,079 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit