🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 790.8

Radius: 14.6

Gravity: 3.71 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.11 AU - 1.53 AU

Year: 995 Days

Day: 7.1 Hours

Environment

Temp: -165 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (52)

Outer Limit: 39,113,140 km

• M1: 185,352 km (0.051 R)
• M2: 296,653 km (0.054 R)
• M3: 435,330 km (0.095 R)
• M4: 579,393 km (0.118 R)
• M5: 679,174 km (0.065 R)
• M6: 867,219 km (0.061 R)
• M7: 1,033,123 km (0.065 R)
• M8: 1,181,225 km (0.094 R)
• M9: 1,291,927 km (0.061 R)
• M10: 1,413,999 km (0.063 R)
• M11: 1,556,416 km (0.069 R)
• M12: 1,670,709 km (0.057 R)
• M13: 1,762,712 km (0.071 R)
• M14: 1,865,037 km (0.081 R)
• M15: 2,022,563 km (0.04 R)
• M16: 2,139,100 km (0.098 R)
• M17: 2,360,654 km (0.072 R)
• M18: 2,503,072 km (0.073 R)
• M19: 2,599,712 km (0.049 R)
• M20: 2,887,089 km (0.09 R)
• M21: 3,122,556 km (0.101 R)
• M22: 3,290,106 km (0.058 R)
• M23: 3,407,241 km (0.111 R)
• M24: 3,504,031 km (0.11 R)
• M25: 3,601,718 km (0.036 R)
• M26: 3,733,664 km (0.078 R)
• M27: 3,833,595 km (0.041 R)
• M28: 4,081,778 km (0.09 R)
• M29: 4,253,965 km (0.061 R)
• M30: 4,629,755 km (0.047 R)
• M31: 5,188,952 km (0.077 R)
• M32: 5,338,400 km (0.111 R)
• M33: 5,885,928 km (0.054 R)
• M34: 6,133,662 km (0.113 R)
• M35: 6,478,336 km (0.096 R)
• M36: 6,856,519 km (0.118 R)
• M37: 7,034,690 km (0.03 R)
• M38: 7,325,658 km (0.091 R)
• M39: 7,465,682 km (0.104 R)
• M40: 7,663,151 km (0.118 R)
• M41: 7,905,350 km (0.058 R)
• M42: 8,005,730 km (0.111 R)
• M43: 8,150,092 km (0.099 R)
• M44: 8,382,717 km (0.096 R)
• M45: 8,499,852 km (0.098 R)
• M46: 8,869,508 km (0.102 R)
• M47: 9,154,043 km (0.083 R)
• M48: 9,532,975 km (0.101 R)
• M49: 9,747,498 km (0.11 R)
• M50: 10,275,130 km (0.078 R)
• M51: 10,526,753 km (0.12 R)
• M52: 10,621,598 km (0.11 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 185.4

Radius: 8.2

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 1.98 AU - 1.98 AU

Year: 1828 Days

Day: 8.1 Hours

Environment

Temp: -187 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (57)

Outer Limit: 39,113,140 km

• M1: 134,189 km (0.114 R)
• M2: 226,042 km (0.034 R)
• M3: 329,863 km (0.105 R)
• M4: 386,860 km (0.084 R)
• M5: 502,649 km (0.091 R)
• M6: 554,559 km (0.047 R)
• M7: 630,854 km (0.034 R)
• M8: 699,220 km (0.108 R)
• M9: 782,546 km (0.12 R)
• M10: 856,747 km (0.052 R)
• M11: 979,417 km (0.106 R)
• M12: 1,053,169 km (0.07 R)
• M13: 1,542,952 km (0.071 R)
• M14: 1,726,060 km (0.046 R)
• M15: 1,899,444 km (0.11 R)
• M16: 1,958,685 km (0.101 R)
• M17: 2,009,847 km (0.117 R)
• M18: 2,139,698 km (0.114 R)
• M19: 2,481,529 km (0.078 R)
• M20: 2,537,030 km (0.102 R)
• M21: 2,611,829 km (0.099 R)
• M22: 2,715,800 km (0.032 R)
• M23: 2,976,848 km (0.091 R)
• M24: 3,035,939 km (0.05 R)
• M25: 3,575,389 km (0.046 R)
• M26: 3,670,085 km (0.096 R)
• M27: 3,937,117 km (0.054 R)
• M28: 4,321,733 km (0.115 R)
• M29: 4,467,740 km (0.077 R)
• M30: 4,741,505 km (0.119 R)
• M31: 4,868,812 km (0.114 R)
• M32: 5,032,472 km (0.117 R)
• M33: 5,091,414 km (0.062 R)
• M34: 5,558,907 km (0.067 R)
• M35: 6,027,448 km (0.076 R)
• M36: 6,715,149 km (0.041 R)
• M37: 6,767,060 km (0.117 R)
• M38: 6,923,689 km (0.077 R)
• M39: 7,055,185 km (0.08 R)
• M40: 7,187,430 km (0.035 R)
• M41: 7,494,853 km (0.065 R)
• M42: 7,616,327 km (0.075 R)
• M43: 7,724,785 km (0.115 R)
• M44: 7,915,971 km (0.107 R)
• M45: 8,039,539 km (0.062 R)
• M46: 8,219,356 km (0.074 R)
• M47: 8,288,919 km (0.099 R)
• M48: 8,344,719 km (0.093 R)
• M49: 8,667,701 km (0.067 R)
• M50: 8,724,398 km (0.045 R)
• M51: 8,823,731 km (0.102 R)
• M52: 9,009,233 km (0.087 R)
• M53: 9,138,336 km (0.098 R)
• M54: 9,253,825 km (0.058 R)
• M55: 9,617,348 km (0.106 R)
• M56: 9,734,782 km (0.111 R)
• M57: 9,956,037 km (0.045 R)

Planet 3 - Gas Giant

Semi-Major Axis: 3.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 775.6

Radius: 10.1

Gravity: 7.6 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 3.28 AU - 3.38 AU

Year: 3986 Days

Day: 10.6 Hours

Environment

Temp: -200 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 39,113,140 km

• M1: 126,410 km (0.058 R)
• M2: 317,297 km (0.116 R)
• M3: 592,707 km (0.059 R)
• M4: 712,385 km (0.097 R)
• M5: 1,042,099 km (0.096 R)
• M6: 1,301,651 km (0.097 R)
• M7: 1,461,571 km (0.102 R)
• M8: 1,536,520 km (0.119 R)
• M9: 1,753,437 km (0.082 R)
• M10: 1,833,322 km (0.06 R)
• M11: 1,914,404 km (0.089 R)
• M12: 2,114,416 km (0.107 R)
• M13: 2,251,448 km (0.09 R)
• M14: 2,409,423 km (0.095 R)
• M15: 2,736,145 km (0.106 R)
• M16: 3,057,930 km (0.086 R)
• M17: 3,194,064 km (0.071 R)
• M18: 3,391,982 km (0.094 R)
• M19: 3,573,594 km (0.079 R)
• M20: 3,799,936 km (0.067 R)
• M21: 4,052,307 km (0.037 R)
• M22: 4,752,126 km (0.076 R)
• M23: 5,047,133 km (0.06 R)
• M24: 5,139,136 km (0.072 R)
• M25: 5,846,883 km (0.065 R)
• M26: 6,162,983 km (0.034 R)
• M27: 6,459,935 km (0.101 R)
• M28: 6,736,243 km (0.11 R)
• M29: 6,812,238 km (0.119 R)
• M30: 6,939,546 km (0.091 R)
• M31: 7,042,021 km (0.119 R)
• M32: 7,326,406 km (0.101 R)
• M33: 7,404,646 km (0.065 R)
• M34: 8,611,302 km (0.091 R)
• M35: 8,971,085 km (0.111 R)
• M36: 9,195,033 km (0.102 R)
• M37: 9,420,776 km (0.104 R)
• M38: 9,619,891 km (0.08 R)
• M39: 10,109,226 km (0.078 R)
• M40: 10,312,978 km (0.057 R)
• M41: 10,636,109 km (0.064 R)
• M42: 10,873,222 km (0.062 R)
• M43: 11,503,777 km (0.112 R)
• M44: 11,930,879 km (0.115 R)
• M45: 12,958,018 km (0.107 R)
• M46: 13,147,708 km (0.103 R)
• M47: 13,306,581 km (0.049 R)
• M48: 13,754,926 km (0.036 R)
• M49: 13,851,566 km (0.078 R)
• M50: 14,110,520 km (0.082 R)
• M51: 14,633,365 km (0.12 R)
• M52: 14,830,983 km (0.103 R)
• M53: 15,195,703 km (0.064 R)
• M54: 16,239,447 km (0.12 R)
• M55: 16,856,090 km (0.064 R)
• M56: 16,959,611 km (0.109 R)
• M57: 17,167,403 km (0.03 R)
• M58: 17,271,523 km (0.096 R)
• M59: 17,585,230 km (0.083 R)
• M60: 18,218,328 km (0.078 R)
• M61: 18,289,237 km (0.091 R)
• M62: 18,859,056 km (0.118 R)
• M63: 18,930,713 km (0.064 R)
• M64: 19,146,134 km (0.107 R)
• M65: 19,362,452 km (0.112 R)
• M66: 19,434,708 km (0.109 R)
• M67: 19,579,519 km (0.088 R)
• M68: 20,235,655 km (0.108 R)
• M69: 21,121,723 km (0.049 R)
• M70: 21,307,823 km (0.086 R)
• M71: 22,058,056 km (0.044 R)
• M72: 22,246,999 km (0.11 R)
• M73: 22,398,541 km (0.084 R)
• M74: 23,276,381 km (0.114 R)
• M75: 23,738,789 km (0.114 R)
• M76: 23,854,876 km (0.025 R)
• M77: 24,555,443 km (0.112 R)
• M78: 25,381,373 km (0.029 R)
• M79: 25,976,922 km (0.098 R)
• M80: 26,296,314 km (0.082 R)
• M81: 26,536,867 km (0.08 R)
• M82: 26,697,535 km (0.086 R)
• M83: 26,979,527 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 639.3

Radius: 8.1

Gravity: 9.74 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 3.38 AU - 3.96 AU

Year: 4612 Days

Day: 6.2 Hours

Environment

Temp: -215 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 39,113,140 km

• M1: 151,991 km (0.032 R)
• M2: 217,515 km (0.104 R)
• M3: 275,410 km (0.07 R)
• M4: 332,107 km (0.081 R)
• M5: 450,290 km (0.103 R)
• M6: 510,278 km (0.098 R)
• M7: 562,488 km (0.082 R)
• M8: 639,082 km (0.091 R)
• M9: 1,159,084 km (0.097 R)
• M10: 1,258,866 km (0.092 R)
• M11: 1,544,598 km (0.098 R)
• M12: 2,036,476 km (0.107 R)
• M13: 2,317,720 km (0.095 R)
• M14: 2,518,331 km (0.091 R)
• M15: 2,592,830 km (0.063 R)
• M16: 2,897,711 km (0.076 R)
• M17: 2,975,801 km (0.12 R)
• M18: 3,153,972 km (0.094 R)
• M19: 3,234,306 km (0.111 R)
• M20: 3,417,563 km (0.048 R)
• M21: 3,479,497 km (0.03 R)
• M22: 3,751,915 km (0.078 R)
• M23: 3,837,185 km (0.101 R)
• M24: 4,451,883 km (0.114 R)
• M25: 4,678,973 km (0.071 R)
• M26: 4,932,990 km (0.077 R)
• M27: 5,003,151 km (0.075 R)
• M28: 5,454,638 km (0.114 R)
• M29: 5,746,653 km (0.118 R)
• M30: 7,308,454 km (0.077 R)
• M31: 7,902,208 km (0.076 R)
• M32: 8,011,864 km (0.111 R)
• M33: 8,680,117 km (0.116 R)
• M34: 8,906,908 km (0.05 R)
• M35: 8,963,904 km (0.091 R)
• M36: 9,279,556 km (0.102 R)
• M37: 9,657,291 km (0.079 R)
• M38: 9,774,575 km (0.086 R)
• M39: 10,218,582 km (0.089 R)
• M40: 10,759,976 km (0.07 R)
• M41: 10,820,713 km (0.043 R)
• M42: 10,881,600 km (0.079 R)
• M43: 11,434,364 km (0.092 R)
• M44: 11,527,414 km (0.089 R)
• M45: 11,964,838 km (0.088 R)
• M46: 12,122,364 km (0.044 R)
• M47: 12,663,161 km (0.071 R)
• M48: 13,211,886 km (0.079 R)
• M49: 14,165,871 km (0.079 R)
• M50: 14,701,581 km (0.108 R)
• M51: 15,073,781 km (0.117 R)
• M52: 15,209,915 km (0.104 R)
• M53: 15,483,380 km (0.081 R)
• M54: 15,896,719 km (0.101 R)
• M55: 16,243,786 km (0.1 R)
• M56: 16,453,372 km (0.039 R)
• M57: 16,698,862 km (0.091 R)
• M58: 17,193,582 km (0.071 R)
• M59: 17,371,454 km (0.095 R)
• M60: 18,016,820 km (0.114 R)
• M61: 18,197,534 km (0.07 R)
• M62: 18,378,846 km (0.118 R)
• M63: 19,590,140 km (0.107 R)
• M64: 19,887,691 km (0.067 R)
• M65: 19,962,340 km (0.073 R)
• M66: 20,789,317 km (0.105 R)
• M67: 20,978,857 km (0.073 R)
• M68: 22,593,318 km (0.08 R)
• M69: 22,788,094 km (0.097 R)
• M70: 22,905,379 km (0.042 R)
• M71: 23,101,053 km (0.09 R)
• M72: 23,376,014 km (0.06 R)
• M73: 24,048,307 km (0.1 R)
• M74: 24,807,366 km (0.06 R)
• M75: 25,088,909 km (0.099 R)
• M76: 25,169,543 km (0.065 R)
• M77: 25,412,041 km (0.097 R)
• M78: 26,759,469 km (0.113 R)
• M79: 27,006,904 km (0.117 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 426.4

Radius: 11.2

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 3.33 AU - 4.13 AU

Year: 4726 Days

Day: 9.1 Hours

Environment

Temp: -202 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (73)

Outer Limit: 39,113,140 km

• M1: 147,952 km (0.066 R)
• M2: 407,056 km (0.099 R)
• M3: 548,426 km (0.056 R)
• M4: 626,217 km (0.092 R)
• M5: 896,839 km (0.078 R)
• M6: 1,323,492 km (0.044 R)
• M7: 1,545,196 km (0.106 R)
• M8: 1,719,478 km (0.085 R)
• M9: 1,854,714 km (0.108 R)
• M10: 2,056,372 km (0.118 R)
• M11: 2,265,510 km (0.109 R)
• M12: 2,347,789 km (0.11 R)
• M13: 2,756,939 km (0.119 R)
• M14: 2,827,400 km (0.067 R)
• M15: 3,115,226 km (0.066 R)
• M16: 3,188,828 km (0.117 R)
• M17: 3,300,129 km (0.026 R)
• M18: 3,412,776 km (0.088 R)
• M19: 3,758,497 km (0.089 R)
• M20: 3,935,621 km (0.065 R)
• M21: 4,339,385 km (0.108 R)
• M22: 5,012,875 km (0.116 R)
• M23: 5,099,343 km (0.075 R)
• M24: 5,428,308 km (0.085 R)
• M25: 5,673,948 km (0.045 R)
• M26: 5,832,073 km (0.098 R)
• M27: 6,176,148 km (0.085 R)
• M28: 6,597,864 km (0.064 R)
• M29: 7,296,786 km (0.086 R)
• M30: 7,395,072 km (0.087 R)
• M31: 7,468,973 km (0.093 R)
• M32: 7,543,323 km (0.09 R)
• M33: 7,968,630 km (0.097 R)
• M34: 8,044,625 km (0.049 R)
• M35: 8,146,053 km (0.107 R)
• M36: 8,299,241 km (0.114 R)
• M37: 8,479,207 km (0.109 R)
• M38: 8,790,670 km (0.047 R)
• M39: 8,947,748 km (0.101 R)
• M40: 9,318,003 km (0.051 R)
• M41: 9,531,928 km (0.049 R)
• M42: 9,910,111 km (0.12 R)
• M43: 10,486,661 km (0.104 R)
• M44: 10,793,038 km (0.108 R)
• M45: 10,989,460 km (0.09 R)
• M46: 11,243,926 km (0.114 R)
• M47: 11,787,415 km (0.077 R)
• M48: 12,663,011 km (0.059 R)
• M49: 12,899,974 km (0.082 R)
• M50: 13,048,973 km (0.12 R)
• M51: 13,680,576 km (0.04 R)
• M52: 13,893,304 km (0.074 R)
• M53: 14,107,229 km (0.107 R)
• M54: 14,476,436 km (0.113 R)
• M55: 15,067,498 km (0.054 R)
• M56: 15,825,360 km (0.11 R)
• M57: 16,241,093 km (0.104 R)
• M58: 16,466,387 km (0.079 R)
• M59: 17,050,717 km (0.104 R)
• M60: 17,906,566 km (0.064 R)
• M61: 18,006,198 km (0.056 R)
• M62: 20,003,479 km (0.08 R)
• M63: 21,679,723 km (0.071 R)
• M64: 21,750,483 km (0.116 R)
• M65: 22,355,607 km (0.117 R)
• M66: 22,786,000 km (0.111 R)
• M67: 23,002,318 km (0.071 R)
• M68: 23,074,574 km (0.04 R)
• M69: 23,146,830 km (0.098 R)
• M70: 23,837,523 km (0.057 R)
• M71: 24,093,784 km (0.112 R)
• M72: 24,314,142 km (0.102 R)
• M73: 24,461,346 km (0.032 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 322.3

Radius: 4.9

Gravity: 13.42 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 5.29 AU - 7.61 AU

Year: 10746 Days

Day: 22 Hours

Environment

Temp: -227 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 39,113,140 km

• M1: 295,007 km (0.061 R)
• M2: 510,727 km (0.068 R)
• M3: 663,766 km (0.105 R)
• M4: 994,826 km (0.107 R)
• M5: 1,028,785 km (0.1 R)
• M6: 1,115,402 km (0.108 R)
• M7: 1,168,509 km (0.034 R)
• M8: 1,222,514 km (0.071 R)
• M9: 1,314,516 km (0.115 R)
• M10: 1,485,656 km (0.047 R)
• M11: 1,544,299 km (0.112 R)
• M12: 1,664,127 km (0.115 R)
• M13: 1,704,668 km (0.055 R)
• M14: 1,766,152 km (0.111 R)
• M15: 1,998,029 km (0.072 R)
• M16: 2,150,619 km (0.109 R)
• M17: 2,239,480 km (0.104 R)
• M18: 2,846,698 km (0.116 R)
• M19: 2,919,851 km (0.12 R)
• M20: 3,218,897 km (0.091 R)
• M21: 3,553,847 km (0.071 R)
• M22: 5,001,206 km (0.085 R)
• M23: 5,661,980 km (0.101 R)
• M24: 6,034,030 km (0.109 R)
• M25: 6,065,296 km (0.081 R)
• M26: 6,349,981 km (0.081 R)
• M27: 6,574,378 km (0.118 R)
• M28: 6,866,692 km (0.099 R)
• M29: 7,666,891 km (0.06 R)
• M30: 8,743,397 km (0.038 R)
• M31: 9,389,959 km (0.114 R)
• M32: 9,792,677 km (0.045 R)
• M33: 11,614,629 km (0.067 R)
• M34: 11,810,303 km (0.097 R)
• M35: 12,483,942 km (0.104 R)
• M36: 13,620,138 km (0.079 R)
• M37: 13,992,487 km (0.057 R)
• M38: 14,075,664 km (0.058 R)
• M39: 15,385,692 km (0.07 R)
• M40: 15,686,833 km (0.061 R)
• M41: 15,773,300 km (0.068 R)
• M42: 16,470,277 km (0.053 R)
• M43: 16,558,091 km (0.03 R)
• M44: 16,646,054 km (0.095 R)
• M45: 17,489,637 km (0.114 R)
• M46: 17,579,246 km (0.082 R)
• M47: 18,895,557 km (0.116 R)
• M48: 18,987,560 km (0.106 R)
• M49: 19,449,518 km (0.06 R)
• M50: 19,495,894 km (0.075 R)
• M51: 19,915,217 km (0.03 R)
• M52: 19,962,041 km (0.11 R)
• M53: 20,290,408 km (0.083 R)
• M54: 20,810,111 km (0.105 R)
• M55: 20,857,534 km (0.117 R)
• M56: 21,095,394 km (0.11 R)
• M57: 21,718,020 km (0.108 R)
• M58: 21,766,191 km (0.094 R)
• M59: 22,541,407 km (0.108 R)
• M60: 22,834,320 km (0.12 R)
• M61: 22,981,374 km (0.04 R)
• M62: 23,177,796 km (0.032 R)
• M63: 23,227,014 km (0.102 R)
• M64: 23,869,836 km (0.109 R)
• M65: 24,218,399 km (0.081 R)
• M66: 24,268,215 km (0.119 R)
• M67: 24,618,723 km (0.099 R)
• M68: 24,668,988 km (0.115 R)
• M69: 24,769,518 km (0.056 R)
• M70: 24,819,783 km (0.081 R)
• M71: 25,986,197 km (0.093 R)
• M72: 26,190,847 km (0.11 R)
• M73: 26,242,159 km (0.095 R)
• M74: 26,756,477 km (0.102 R)
• M75: 27,378,056 km (0.109 R)
• M76: 28,477,301 km (0.057 R)
• M77: 28,741,192 km (0.117 R)
• M78: 30,179,874 km (0.071 R)
• M79: 30,448,851 km (0.115 R)
• M80: 30,502,707 km (0.115 R)
• M81: 30,610,716 km (0.073 R)
• M82: 31,043,503 km (0.105 R)
• M83: 31,097,657 km (0.118 R)
• M84: 31,151,961 km (0.107 R)
• M85: 32,409,032 km (0.085 R)
• M86: 32,905,398 km (0.068 R)
• M87: 33,571,109 km (0.118 R)
• M88: 34,297,406 km (0.101 R)
• M89: 34,972,392 km (0.045 R)
• M90: 35,028,790 km (0.037 R)
• M91: 35,311,530 km (0.103 R)
• M92: 35,594,869 km (0.095 R)
• M93: 36,851,042 km (0.079 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 329 - 14,859 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit