🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.9 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.85

Radius: 0.94

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.9 AU - 0.9 AU

Year: 301 Days

Day: 38.3 Hours

Environment

Temp: 135 °C

Axial Tilt: 11.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 103,250,398 km

• M1: 380,727 km (0.051 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.02 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.78

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.9 AU - 1.14 AU

Year: 364 Days

Day: 33.2 Hours

Environment

Temp: 88 °C

Axial Tilt: 13.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 103,250,398 km

• M1: 975,378 km (0.092 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.4 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.87

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 1.89 AU - 2.91 AU

Year: 1313 Days

Day: 23.2 Hours

Environment

Temp: -72 °C

Axial Tilt: 3.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 4.43 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.72

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 3.67 AU - 5.19 AU

Year: 3292 Days

Day: 47.1 Hours

Environment

Temp: -131 °C

Axial Tilt: 19.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 103,250,398 km

• M1: 4,017,600 km (0.076 R)

Asteroid Belt

Center: 5.59 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 6.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 185.5

Radius: 8.9

Gravity: 2.34 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 5.84 AU - 7.66 AU

Year: 6192 Days

Day: 7.5 Hours

Environment

Temp: -141 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 103,250,398 km

• M1: 204,650 km (0.076 R)
• M2: 270,174 km (0.061 R)
• M3: 543,788 km (0.114 R)
• M4: 608,415 km (0.048 R)
• M5: 676,033 km (0.1 R)
• M6: 862,581 km (0.111 R)
• M7: 1,335,759 km (0.059 R)
• M8: 1,492,089 km (0.103 R)
• M9: 1,558,959 km (0.079 R)
• M10: 1,822,700 km (0.1 R)
• M11: 2,085,843 km (0.049 R)
• M12: 2,145,981 km (0.083 R)
• M13: 2,222,127 km (0.109 R)
• M14: 2,812,739 km (0.103 R)
• M15: 3,414,571 km (0.093 R)
• M16: 3,521,683 km (0.035 R)
• M17: 3,721,097 km (0.1 R)
• M18: 4,245,288 km (0.09 R)
• M19: 4,438,120 km (0.115 R)
• M20: 4,516,061 km (0.094 R)
• M21: 4,892,748 km (0.037 R)
• M22: 5,824,892 km (0.106 R)
• M23: 5,996,331 km (0.096 R)
• M24: 6,169,416 km (0.088 R)
• M25: 6,234,790 km (0.104 R)
• M26: 6,300,314 km (0.099 R)
• M27: 6,520,522 km (0.106 R)
• M28: 6,631,674 km (0.069 R)
• M29: 6,855,771 km (0.094 R)
• M30: 6,923,389 km (0.088 R)
• M31: 7,706,385 km (0.104 R)
• M32: 7,823,969 km (0.082 R)
• M33: 8,108,354 km (0.103 R)
• M34: 8,203,947 km (0.095 R)
• M35: 9,155,539 km (0.067 R)
• M36: 9,380,086 km (0.083 R)
• M37: 9,606,577 km (0.099 R)
• M38: 9,911,158 km (0.109 R)
• M39: 10,296,522 km (0.079 R)
• M40: 10,660,643 km (0.115 R)
• M41: 10,765,362 km (0.115 R)
• M42: 11,428,081 km (0.114 R)
• M43: 11,886,448 km (0.105 R)
• M44: 12,049,510 km (0.05 R)
• M45: 12,765,186 km (0.112 R)
• M46: 13,325,131 km (0.087 R)
• M47: 13,494,626 km (0.1 R)
• M48: 14,064,893 km (0.059 R)
• M49: 14,179,933 km (0.118 R)
• M50: 14,555,873 km (0.066 R)
• M51: 14,730,454 km (0.066 R)
• M52: 14,935,103 km (0.109 R)
• M53: 15,347,096 km (0.099 R)
• M54: 15,703,288 km (0.066 R)
• M55: 15,822,668 km (0.092 R)
• M56: 16,423,901 km (0.1 R)
• M57: 16,757,654 km (0.051 R)
• M58: 17,432,041 km (0.045 R)
• M59: 17,586,576 km (0.11 R)
• M60: 18,775,730 km (0.066 R)
• M61: 19,284,213 km (0.084 R)
• M62: 19,443,983 km (0.097 R)
• M63: 19,508,161 km (0.093 R)
• M64: 20,314,643 km (0.047 R)
• M65: 20,477,256 km (0.1 R)
• M66: 21,165,107 km (0.096 R)
• M67: 21,429,147 km (0.114 R)
• M68: 21,694,234 km (0.115 R)
• M69: 22,261,061 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 9.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 377.8

Radius: 14

Gravity: 1.93 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 7.92 AU - 11.6 AU

Year: 10766 Days

Day: 14.9 Hours

Environment

Temp: -162 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (88)

Outer Limit: 103,250,398 km

• M1: 228,137 km (0.091 R)
• M2: 387,758 km (0.111 R)
• M3: 661,671 km (0.111 R)
• M4: 919,429 km (0.039 R)
• M5: 1,265,897 km (0.107 R)
• M6: 1,493,884 km (0.096 R)
• M7: 1,777,671 km (0.036 R)
• M8: 1,883,437 km (0.042 R)
• M9: 2,659,102 km (0.09 R)
• M10: 3,314,191 km (0.085 R)
• M11: 3,879,522 km (0.075 R)
• M12: 4,018,648 km (0.053 R)
• M13: 5,069,124 km (0.053 R)
• M14: 5,252,381 km (0.104 R)
• M15: 5,406,766 km (0.111 R)
• M16: 5,878,897 km (0.092 R)
• M17: 6,039,266 km (0.079 R)
• M18: 6,168,668 km (0.106 R)
• M19: 6,964,379 km (0.118 R)
• M20: 7,408,984 km (0.057 R)
• M21: 7,933,624 km (0.074 R)
• M22: 8,111,197 km (0.057 R)
• M23: 8,397,976 km (0.075 R)
• M24: 8,578,989 km (0.068 R)
• M25: 8,834,652 km (0.105 R)
• M26: 9,316,058 km (0.076 R)
• M27: 9,730,145 km (0.058 R)
• M28: 10,111,769 km (0.03 R)
• M29: 10,654,510 km (0.062 R)
• M30: 11,127,239 km (0.083 R)
• M31: 11,687,483 km (0.112 R)
• M32: 12,011,811 km (0.065 R)
• M33: 12,503,839 km (0.087 R)
• M34: 12,627,855 km (0.064 R)
• M35: 13,805,490 km (0.109 R)
• M36: 14,668,071 km (0.113 R)
• M37: 15,018,130 km (0.092 R)
• M38: 15,238,189 km (0.042 R)
• M39: 16,039,585 km (0.052 R)
• M40: 16,129,343 km (0.117 R)
• M41: 16,309,758 km (0.111 R)
• M42: 16,672,234 km (0.104 R)
• M43: 16,808,966 km (0.101 R)
• M44: 17,129,255 km (0.028 R)
• M45: 17,313,261 km (0.103 R)
• M46: 17,915,691 km (0.076 R)
• M47: 18,289,836 km (0.117 R)
• M48: 19,093,475 km (0.112 R)
• M49: 19,284,213 km (0.084 R)
• M50: 20,150,684 km (0.089 R)
• M51: 21,177,523 km (0.103 R)
• M52: 21,374,993 km (0.112 R)
• M53: 21,921,324 km (0.095 R)
• M54: 22,673,801 km (0.066 R)
• M55: 23,027,899 km (0.106 R)
• M56: 23,180,190 km (0.11 R)
• M57: 23,434,806 km (0.11 R)
• M58: 23,792,793 km (0.078 R)
• M59: 23,998,042 km (0.056 R)
• M60: 24,204,038 km (0.05 R)
• M61: 24,359,021 km (0.066 R)
• M62: 24,565,915 km (0.105 R)
• M63: 25,033,857 km (0.076 R)
• M64: 25,347,414 km (0.096 R)
• M65: 26,774,578 km (0.094 R)
• M66: 26,988,204 km (0.112 R)
• M67: 27,095,316 km (0.106 R)
• M68: 27,202,578 km (0.076 R)
• M69: 27,363,545 km (0.056 R)
• M70: 27,471,106 km (0.114 R)
• M71: 27,578,816 km (0.112 R)
• M72: 27,794,536 km (0.111 R)
• M73: 29,983,153 km (0.031 R)
• M74: 30,594,709 km (0.074 R)
• M75: 31,210,305 km (0.063 R)
• M76: 31,435,300 km (0.096 R)
• M77: 33,886,760 km (0.11 R)
• M78: 34,175,933 km (0.098 R)
• M79: 34,581,941 km (0.12 R)
• M80: 34,989,596 km (0.103 R)
• M81: 35,223,267 km (0.116 R)
• M82: 35,986,217 km (0.088 R)
• M83: 38,971,293 km (0.076 R)
• M84: 39,334,815 km (0.116 R)
• M85: 39,456,289 km (0.11 R)
• M86: 39,638,649 km (0.081 R)
• M87: 39,821,308 km (0.073 R)
• M88: 40,554,786 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 12.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 290.2

Radius: 14.7

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 9.56 AU - 14.84 AU

Year: 15047 Days

Day: 5.4 Hours

Environment

Temp: -170 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 103,250,398 km

• M1: 204,650 km (0.054 R)
• M2: 326,123 km (0.106 R)
• M3: 452,384 km (0.05 R)
• M4: 999,463 km (0.074 R)
• M5: 1,454,241 km (0.06 R)
• M6: 2,288,847 km (0.101 R)
• M7: 3,056,284 km (0.095 R)
• M8: 3,689,233 km (0.1 R)
• M9: 4,144,310 km (0.026 R)
• M10: 4,237,509 km (0.115 R)
• M11: 4,363,022 km (0.078 R)
• M12: 4,585,474 km (0.057 R)
• M13: 5,547,089 km (0.098 R)
• M14: 6,068,886 km (0.066 R)
• M15: 6,899,454 km (0.106 R)
• M16: 7,460,595 km (0.088 R)
• M17: 7,651,033 km (0.082 R)
• M18: 8,036,547 km (0.067 R)
• M19: 8,428,494 km (0.111 R)
• M20: 8,587,067 km (0.107 R)
• M21: 8,826,873 km (0.074 R)
• M22: 9,068,773 km (0.102 R)
• M23: 9,642,032 km (0.096 R)
• M24: 10,142,736 km (0.074 R)
• M25: 10,909,724 km (0.026 R)
• M26: 11,695,562 km (0.118 R)
• M27: 12,184,747 km (0.115 R)
• M28: 15,210,364 km (0.08 R)
• M29: 17,383,422 km (0.1 R)
• M30: 17,585,678 km (0.025 R)
• M31: 20,340,224 km (0.116 R)
• M32: 22,616,804 km (0.07 R)
• M33: 23,226,416 km (0.115 R)
• M34: 24,631,738 km (0.041 R)
• M35: 25,891,352 km (0.084 R)
• M36: 26,528,938 km (0.076 R)
• M37: 26,703,669 km (0.101 R)
• M38: 27,054,476 km (0.034 R)
• M39: 27,760,578 km (0.069 R)
• M40: 28,413,124 km (0.118 R)
• M41: 28,950,928 km (0.112 R)
• M42: 29,371,448 km (0.091 R)
• M43: 29,854,499 km (0.104 R)
• M44: 30,097,147 km (0.087 R)
• M45: 31,135,206 km (0.082 R)
• M46: 32,558,481 km (0.075 R)
• M47: 32,808,159 km (0.09 R)
• M48: 37,933,831 km (0.095 R)
• M49: 38,591,763 km (0.099 R)
• M50: 40,655,765 km (0.047 R)
• M51: 41,329,105 km (0.09 R)
• M52: 43,577,561 km (0.097 R)
• M53: 47,059,301 km (0.108 R)

Planet 8 - Gas Giant

Semi-Major Axis: 12.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 330.7

Radius: 9.1

Gravity: 3.99 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 11.15 AU - 13.43 AU

Year: 15213 Days

Day: 12.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (88)

Outer Limit: 103,250,398 km

• M1: 121,324 km (0.11 R)
• M2: 253,568 km (0.083 R)
• M3: 452,085 km (0.095 R)
• M4: 555,606 km (0.098 R)
• M5: 651,499 km (0.113 R)
• M6: 1,152,951 km (0.06 R)
• M7: 1,321,398 km (0.093 R)
• M8: 1,497,923 km (0.106 R)
• M9: 1,682,527 km (0.064 R)
• M10: 1,801,607 km (0.114 R)
• M11: 2,227,811 km (0.103 R)
• M12: 3,746,230 km (0.106 R)
• M13: 4,223,148 km (0.104 R)
• M14: 4,991,632 km (0.1 R)
• M15: 5,339,148 km (0.098 R)
• M16: 5,480,368 km (0.114 R)
• M17: 7,387,292 km (0.083 R)
• M18: 7,584,313 km (0.088 R)
• M19: 8,145,604 km (0.103 R)
• M20: 8,886,712 km (0.075 R)
• M21: 9,054,411 km (0.065 R)
• M22: 9,223,008 km (0.053 R)
• M23: 9,778,465 km (0.088 R)
• M24: 10,038,616 km (0.035 R)
• M25: 10,743,221 km (0.095 R)
• M26: 11,372,729 km (0.106 R)
• M27: 12,060,580 km (0.045 R)
• M28: 12,761,895 km (0.094 R)
• M29: 13,380,482 km (0.076 R)
• M30: 14,008,644 km (0.105 R)
• M31: 15,093,677 km (0.117 R)
• M32: 15,394,369 km (0.114 R)
• M33: 15,697,005 km (0.053 R)
• M34: 15,848,997 km (0.114 R)
• M35: 16,513,511 km (0.096 R)
• M36: 17,869,615 km (0.059 R)
• M37: 18,614,613 km (0.054 R)
• M38: 18,829,286 km (0.11 R)
• M39: 19,152,866 km (0.096 R)
• M40: 19,478,391 km (0.117 R)
• M41: 19,587,298 km (0.12 R)
• M42: 20,576,439 km (0.115 R)
• M43: 21,694,384 km (0.08 R)
• M44: 21,977,124 km (0.078 R)
• M45: 22,374,755 km (0.072 R)
• M46: 22,431,752 km (0.101 R)
• M47: 23,119,603 km (0.057 R)
• M48: 23,872,679 km (0.084 R)
• M49: 24,869,449 km (0.089 R)
• M50: 24,928,540 km (0.11 R)
• M51: 25,640,925 km (0.086 R)
• M52: 25,939,672 km (0.073 R)
• M53: 26,540,757 km (0.053 R)
• M54: 27,268,101 km (0.065 R)
• M55: 27,756,688 km (0.077 R)
• M56: 29,802,289 km (0.091 R)
• M57: 31,065,494 km (0.066 R)
• M58: 31,129,223 km (0.062 R)
• M59: 31,192,802 km (0.074 R)
• M60: 31,511,744 km (0.092 R)
• M61: 31,767,706 km (0.05 R)
• M62: 32,024,416 km (0.089 R)
• M63: 32,928,137 km (0.109 R)
• M64: 34,299,351 km (0.097 R)
• M65: 34,562,793 km (0.045 R)
• M66: 35,423,130 km (0.077 R)
• M67: 35,622,694 km (0.081 R)
• M68: 35,822,557 km (0.069 R)
• M69: 36,895,173 km (0.104 R)
• M70: 37,706,592 km (0.065 R)
• M71: 37,774,360 km (0.081 R)
• M72: 38,523,696 km (0.064 R)
• M73: 38,797,460 km (0.12 R)
• M74: 39,760,571 km (0.103 R)
• M75: 41,429,784 km (0.079 R)
• M76: 41,920,914 km (0.026 R)
• M77: 44,477,242 km (0.04 R)
• M78: 45,052,147 km (0.067 R)
• M79: 45,268,316 km (0.114 R)
• M80: 45,846,661 km (0.036 R)
• M81: 46,937,529 km (0.104 R)
• M82: 47,083,686 km (0.041 R)
• M83: 47,229,843 km (0.102 R)
• M84: 47,742,964 km (0.051 R)
• M85: 47,816,416 km (0.109 R)
• M86: 48,774,591 km (0.051 R)
• M87: 48,848,642 km (0.111 R)
• M88: 49,144,845 km (0.045 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 809.5

Radius: 3.3

Gravity: 74.33 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 16.01 AU - 21.85 AU

Year: 29082 Days

Day: 22.6 Hours

Environment

Temp: -203 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 103,250,398 km

• M1: 89,011 km (0.064 R)
• M2: 194,028 km (0.108 R)
• M3: 355,145 km (0.099 R)
• M4: 377,884 km (0.103 R)
• M5: 473,776 km (0.094 R)
• M6: 688,150 km (0.069 R)
• M7: 835,953 km (0.09 R)
• M8: 1,092,663 km (0.097 R)
• M9: 1,229,694 km (0.117 R)
• M10: 3,159,058 km (0.094 R)
• M11: 3,857,830 km (0.06 R)
• M12: 4,493,322 km (0.032 R)
• M13: 4,878,686 km (0.119 R)
• M14: 5,274,671 km (0.115 R)
• M15: 6,097,011 km (0.106 R)
• M16: 6,708,417 km (0.1 R)
• M17: 8,521,394 km (0.062 R)
• M18: 8,588,713 km (0.075 R)
• M19: 9,902,481 km (0.076 R)
• M20: 10,044,300 km (0.11 R)
• M21: 10,474,095 km (0.106 R)
• M22: 10,691,161 km (0.106 R)
• M23: 11,648,887 km (0.117 R)
• M24: 11,798,634 km (0.1 R)
• M25: 15,250,905 km (0.103 R)
• M26: 16,242,738 km (0.059 R)
• M27: 16,326,214 km (0.087 R)
• M28: 18,114,208 km (0.085 R)
• M29: 19,428,874 km (0.103 R)
• M30: 22,056,112 km (0.098 R)
• M31: 23,931,919 km (0.118 R)
• M32: 24,122,208 km (0.093 R)
• M33: 25,468,738 km (0.11 R)
• M34: 25,663,066 km (0.062 R)
• M35: 26,740,919 km (0.053 R)
• M36: 26,938,388 km (0.066 R)
• M37: 28,033,444 km (0.098 R)
• M38: 29,041,435 km (0.105 R)
• M39: 30,061,393 km (0.114 R)
• M40: 31,093,020 km (0.111 R)
• M41: 34,578,501 km (0.059 R)
• M42: 37,852,600 km (0.113 R)
• M43: 39,976,740 km (0.118 R)
• M44: 40,655,465 km (0.073 R)
• M45: 41,680,809 km (0.074 R)
• M46: 43,873,016 km (0.074 R)
• M47: 45,512,310 km (0.118 R)
• M48: 47,888,522 km (0.115 R)
• M49: 48,008,350 km (0.115 R)
• M50: 50,426,600 km (0.092 R)
• M51: 52,019,668 km (0.043 R)
• M52: 53,629,041 km (0.108 R)
• M53: 54,127,502 km (0.114 R)
• M54: 54,502,394 km (0.103 R)
• M55: 55,003,696 km (0.109 R)
• M56: 55,632,307 km (0.118 R)
• M57: 56,642,990 km (0.113 R)
• M58: 56,769,699 km (0.086 R)
• M59: 57,150,575 km (0.075 R)
• M60: 57,787,264 km (0.088 R)
• M61: 58,042,627 km (0.116 R)
• M62: 59,582,438 km (0.108 R)
• M63: 59,840,345 km (0.095 R)
• M64: 60,486,907 km (0.085 R)
• M65: 63,490,234 km (0.059 R)
• M66: 64,678,639 km (0.081 R)
• M67: 67,077,441 km (0.114 R)
• M68: 68,557,712 km (0.063 R)
• M69: 69,369,580 km (0.107 R)
• M70: 71,413,236 km (0.085 R)
• M71: 73,476,640 km (0.113 R)
• M72: 73,614,868 km (0.087 R)
• M73: 73,753,246 km (0.086 R)
• M74: 73,891,624 km (0.112 R)
• M75: 75,141,365 km (0.113 R)
• M76: 78,084,404 km (0.093 R)
• M77: 80,922,275 km (0.039 R)
• M78: 81,780,070 km (0.104 R)
• M79: 83,072,595 km (0.081 R)
• M80: 83,504,933 km (0.057 R)
• M81: 87,429,334 km (0.049 R)
• M82: 88,015,907 km (0.105 R)
• M83: 88,162,663 km (0.07 R)
• M84: 88,456,623 km (0.038 R)
• M85: 88,750,882 km (0.048 R)
• M86: 89,487,801 km (0.076 R)
• M87: 90,374,916 km (0.112 R)
• M88: 92,904,018 km (0.101 R)
• M89: 93,502,559 km (0.088 R)
• M90: 93,952,250 km (0.069 R)
• M91: 97,120,134 km (0.097 R)
• M92: 97,575,660 km (0.119 R)
• M93: 99,098,716 km (0.038 R)
• M94: 101,552,121 km (0.06 R)
• M95: 102,322,849 km (0.068 R)

Kuiper Belt

Range: 31.1 - 53.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 363 - 12,596 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit