🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 5.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 996.3

Radius: 13.1

Gravity: 5.81 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 4.37 AU - 7.03 AU

Year: 8653 Days

Day: 7.8 Hours

Environment

Temp: -209 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 79,964,552 km

• M1: 175,329 km (0.057 R)
• M2: 312,510 km (0.069 R)
• M3: 405,709 km (0.06 R)
• M4: 885,320 km (0.107 R)
• M5: 1,073,215 km (0.063 R)
• M6: 1,359,545 km (0.099 R)
• M7: 1,740,571 km (0.104 R)
• M8: 1,955,992 km (0.081 R)
• M9: 2,309,043 km (0.053 R)
• M10: 2,709,965 km (0.086 R)
• M11: 3,547,414 km (0.099 R)
• M12: 3,669,037 km (0.042 R)
• M13: 3,947,738 km (0.08 R)
• M14: 4,297,947 km (0.074 R)
• M15: 5,234,729 km (0.086 R)
• M16: 5,797,965 km (0.104 R)
• M17: 5,905,675 km (0.078 R)
• M18: 6,086,838 km (0.065 R)
• M19: 6,454,699 km (0.032 R)
• M20: 8,118,228 km (0.036 R)
• M21: 8,239,103 km (0.034 R)
• M22: 8,482,648 km (0.115 R)
• M23: 8,935,182 km (0.07 R)
• M24: 9,060,096 km (0.117 R)
• M25: 9,353,607 km (0.073 R)
• M26: 9,864,184 km (0.069 R)
• M27: 10,036,372 km (0.109 R)
• M28: 10,735,143 km (0.034 R)
• M29: 11,359,565 km (0.085 R)
• M30: 11,585,457 km (0.096 R)
• M31: 11,904,251 km (0.1 R)
• M32: 12,737,212 km (0.095 R)
• M33: 13,302,991 km (0.059 R)
• M34: 15,898,963 km (0.046 R)
• M35: 16,610,300 km (0.117 R)
• M36: 16,815,399 km (0.09 R)
• M37: 17,073,156 km (0.083 R)
• M38: 17,332,110 km (0.102 R)
• M39: 17,488,141 km (0.101 R)
• M40: 17,801,548 km (0.056 R)
• M41: 18,222,217 km (0.103 R)
• M42: 18,327,983 km (0.118 R)
• M43: 18,966,616 km (0.058 R)
• M44: 19,558,426 km (0.1 R)
• M45: 20,265,575 km (0.1 R)
• M46: 21,314,256 km (0.115 R)
• M47: 22,380,589 km (0.111 R)
• M48: 23,464,276 km (0.082 R)
• M49: 24,157,513 km (0.073 R)
• M50: 24,681,853 km (0.081 R)
• M51: 24,857,481 km (0.065 R)
• M52: 25,327,817 km (0.054 R)
• M53: 25,919,925 km (0.095 R)
• M54: 26,098,545 km (0.111 R)
• M55: 26,456,832 km (0.063 R)
• M56: 26,756,626 km (0.108 R)
• M57: 29,443,255 km (0.061 R)
• M58: 29,567,421 km (0.073 R)
• M59: 29,816,202 km (0.11 R)
• M60: 30,065,881 km (0.06 R)
• M61: 32,727,676 km (0.058 R)
• M62: 33,891,398 km (0.101 R)
• M63: 34,805,889 km (0.112 R)
• M64: 35,068,583 km (0.045 R)
• M65: 35,200,229 km (0.119 R)
• M66: 35,927,125 km (0.101 R)
• M67: 36,458,946 km (0.066 R)
• M68: 36,725,828 km (0.119 R)
• M69: 37,328,708 km (0.113 R)
• M70: 37,934,878 km (0.073 R)
• M71: 38,340,737 km (0.059 R)
• M72: 38,952,294 km (0.108 R)
• M73: 39,772,838 km (0.038 R)
• M74: 40,598,917 km (0.108 R)
• M75: 41,152,878 km (0.108 R)
• M76: 42,338,142 km (0.092 R)
• M77: 42,899,882 km (0.104 R)
• M78: 43,181,725 km (0.11 R)
• M79: 46,972,983 km (0.068 R)
• M80: 47,190,798 km (0.061 R)
• M81: 47,554,470 km (0.07 R)
• M82: 47,846,186 km (0.059 R)
• M83: 49,092,187 km (0.091 R)
• M84: 49,313,292 km (0.084 R)

Planet 2 - Ice Giant

Semi-Major Axis: 7.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 435.9

Radius: 5.3

Gravity: 15.52 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 7.19 AU - 7.55 AU

Year: 12721 Days

Day: 23.4 Hours

Environment

Temp: -224 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 79,964,552 km

• M1: 78,090 km (0.073 R)
• M2: 223,649 km (0.082 R)
• M3: 396,135 km (0.104 R)
• M4: 776,413 km (0.051 R)
• M5: 830,268 km (0.084 R)
• M6: 1,058,704 km (0.109 R)
• M7: 1,392,906 km (0.105 R)
• M8: 1,951,055 km (0.09 R)
• M9: 2,463,578 km (0.05 R)
• M10: 2,517,134 km (0.075 R)
• M11: 2,734,948 km (0.037 R)
• M12: 3,159,657 km (0.091 R)
• M13: 3,912,284 km (0.112 R)
• M14: 3,974,815 km (0.086 R)
• M15: 4,069,361 km (0.111 R)
• M16: 4,389,501 km (0.12 R)
• M17: 5,020,056 km (0.034 R)
• M18: 5,856,308 km (0.119 R)
• M19: 6,035,975 km (0.047 R)
• M20: 6,108,231 km (0.067 R)
• M21: 6,734,896 km (0.073 R)
• M22: 7,036,934 km (0.031 R)
• M23: 7,074,932 km (0.073 R)
• M24: 7,113,080 km (0.11 R)
• M25: 7,266,268 km (0.04 R)
• M26: 7,304,714 km (0.116 R)
• M27: 7,343,311 km (0.103 R)
• M28: 7,614,980 km (0.115 R)
• M29: 8,980,809 km (0.09 R)
• M30: 9,187,852 km (0.079 R)
• M31: 9,480,615 km (0.109 R)
• M32: 9,522,652 km (0.085 R)
• M33: 9,691,548 km (0.107 R)
• M34: 9,946,613 km (0.092 R)
• M35: 10,376,856 km (0.11 R)
• M36: 11,210,864 km (0.087 R)
• M37: 11,658,461 km (0.108 R)
• M38: 11,975,160 km (0.119 R)
• M39: 13,129,457 km (0.117 R)
• M40: 13,934,443 km (0.089 R)
• M41: 14,126,228 km (0.055 R)
• M42: 14,174,249 km (0.099 R)
• M43: 14,270,590 km (0.047 R)
• M44: 15,641,505 km (0.071 R)
• M45: 16,646,204 km (0.118 R)
• M46: 16,798,644 km (0.112 R)
• M47: 17,413,342 km (0.115 R)
• M48: 17,775,219 km (0.103 R)
• M49: 18,139,639 km (0.091 R)
• M50: 18,506,453 km (0.112 R)
• M51: 19,568,149 km (0.118 R)
• M52: 20,160,557 km (0.105 R)
• M53: 20,868,155 km (0.113 R)
• M54: 21,639,182 km (0.097 R)
• M55: 22,419,634 km (0.08 R)
• M56: 22,587,932 km (0.1 R)
• M57: 22,926,173 km (0.051 R)
• M58: 23,039,119 km (0.115 R)
• M59: 24,007,765 km (0.051 R)
• M60: 24,583,717 km (0.113 R)
• M61: 24,931,532 km (0.104 R)
• M62: 25,047,770 km (0.087 R)
• M63: 26,457,281 km (0.111 R)
• M64: 26,694,693 km (0.103 R)
• M65: 26,932,703 km (0.092 R)
• M66: 28,133,824 km (0.053 R)
• M67: 28,194,411 km (0.109 R)
• M68: 29,844,476 km (0.079 R)
• M69: 30,277,412 km (0.12 R)
• M70: 31,024,354 km (0.12 R)
• M71: 31,903,541 km (0.091 R)
• M72: 32,092,932 km (0.064 R)
• M73: 32,663,498 km (0.107 R)
• M74: 33,045,870 km (0.082 R)
• M75: 33,429,589 km (0.096 R)
• M76: 33,814,803 km (0.095 R)
• M77: 33,943,458 km (0.065 R)
• M78: 34,201,364 km (0.117 R)
• M79: 34,654,347 km (0.052 R)
• M80: 34,784,198 km (0.106 R)
• M81: 38,081,036 km (0.057 R)
• M82: 38,349,115 km (0.029 R)
• M83: 38,416,135 km (0.096 R)
• M84: 38,886,919 km (0.084 R)
• M85: 41,269,565 km (0.099 R)
• M86: 41,751,868 km (0.108 R)
• M87: 42,721,711 km (0.077 R)
• M88: 43,488,999 km (0.079 R)
• M89: 44,331,235 km (0.091 R)
• M90: 45,108,096 km (0.119 R)
• M91: 46,460,312 km (0.114 R)
• M92: 46,531,969 km (0.083 R)
• M93: 48,187,419 km (0.063 R)

Planet 3 - Ice Giant

Semi-Major Axis: 7.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 795.1

Radius: 7.3

Gravity: 14.92 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 6.8 AU - 7.94 AU

Year: 12721 Days

Day: 16.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 79,964,552 km

• M1: 105,766 km (0.084 R)
• M2: 188,643 km (0.088 R)
• M3: 245,490 km (0.097 R)
• M4: 444,754 km (0.03 R)
• M5: 731,234 km (0.094 R)
• M6: 831,764 km (0.032 R)
• M7: 1,002,455 km (0.06 R)
• M8: 1,279,511 km (0.027 R)
• M9: 2,071,332 km (0.049 R)
• M10: 2,484,372 km (0.117 R)
• M11: 3,184,041 km (0.082 R)
• M12: 3,317,632 km (0.086 R)
• M13: 3,521,384 km (0.027 R)
• M14: 3,764,331 km (0.084 R)
• M15: 4,120,823 km (0.114 R)
• M16: 4,413,885 km (0.115 R)
• M17: 4,942,863 km (0.043 R)
• M18: 5,293,521 km (0.111 R)
• M19: 5,451,945 km (0.1 R)
• M20: 5,895,802 km (0.087 R)
• M21: 6,018,921 km (0.11 R)
• M22: 6,393,215 km (0.053 R)
• M23: 7,650,136 km (0.069 R)
• M24: 8,237,756 km (0.056 R)
• M25: 11,953,169 km (0.12 R)
• M26: 12,370,697 km (0.087 R)
• M27: 13,597,250 km (0.096 R)
• M28: 13,923,523 km (0.113 R)
• M29: 14,694,999 km (0.119 R)
• M30: 14,750,649 km (0.038 R)
• M31: 15,254,495 km (0.045 R)
• M32: 15,423,690 km (0.112 R)
• M33: 15,707,178 km (0.116 R)
• M34: 16,279,091 km (0.104 R)
• M35: 16,625,559 km (0.086 R)
• M36: 16,974,422 km (0.117 R)
• M37: 18,334,266 km (0.058 R)
• M38: 18,755,085 km (0.114 R)
• M39: 19,239,782 km (0.079 R)
• M40: 19,728,668 km (0.072 R)
• M41: 21,788,182 km (0.069 R)
• M42: 25,637,036 km (0.097 R)
• M43: 25,704,056 km (0.102 R)
• M44: 26,174,840 km (0.079 R)
• M45: 26,377,545 km (0.052 R)
• M46: 27,056,720 km (0.063 R)
• M47: 27,466,917 km (0.099 R)
• M48: 29,338,686 km (0.033 R)
• M49: 29,830,563 km (0.098 R)
• M50: 29,901,174 km (0.097 R)
• M51: 29,971,634 km (0.119 R)
• M52: 30,680,279 km (0.109 R)
• M53: 31,036,621 km (0.066 R)
• M54: 31,753,494 km (0.074 R)
• M55: 33,203,696 km (0.093 R)
• M56: 33,349,853 km (0.08 R)
• M57: 34,010,328 km (0.073 R)
• M58: 34,972,093 km (0.073 R)
• M59: 35,120,793 km (0.109 R)
• M60: 35,344,292 km (0.052 R)
• M61: 35,418,941 km (0.107 R)
• M62: 37,073,644 km (0.094 R)
• M63: 37,986,639 km (0.093 R)
• M64: 38,522,798 km (0.091 R)
• M65: 38,830,222 km (0.092 R)
• M66: 39,912,712 km (0.106 R)
• M67: 40,691,967 km (0.081 R)
• M68: 44,099,657 km (0.067 R)
• M69: 44,421,293 km (0.101 R)
• M70: 44,743,676 km (0.099 R)
• M71: 46,122,669 km (0.12 R)
• M72: 46,612,602 km (0.08 R)
• M73: 48,423,933 km (0.115 R)
• M74: 48,506,810 km (0.084 R)
• M75: 52,115,111 km (0.048 R)
• M76: 53,222,883 km (0.084 R)
• M77: 54,166,247 km (0.065 R)
• M78: 54,596,940 km (0.108 R)
• M79: 54,942,212 km (0.044 R)
• M80: 55,461,615 km (0.075 R)
• M81: 55,808,832 km (0.103 R)
• M82: 55,895,748 km (0.038 R)
• M83: 56,330,929 km (0.076 R)
• M84: 56,417,995 km (0.107 R)
• M85: 57,643,201 km (0.037 R)
• M86: 57,906,793 km (0.078 R)

Planet 4 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 316.8

Radius: 3.3

Gravity: 29.09 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 6.73 AU - 9.51 AU

Year: 14712 Days

Day: 15.8 Hours

Environment

Temp: -224 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 79,964,552 km

• M1: 137,929 km (0.08 R)
• M2: 208,091 km (0.107 R)
• M3: 468,241 km (0.115 R)
• M4: 560,693 km (0.114 R)
• M5: 727,644 km (0.058 R)
• M6: 1,025,045 km (0.072 R)
• M7: 1,104,780 km (0.04 R)
• M8: 1,313,021 km (0.1 R)
• M9: 1,334,563 km (0.078 R)
• M10: 1,555,967 km (0.097 R)
• M11: 1,694,345 km (0.088 R)
• M12: 1,885,083 km (0.119 R)
• M13: 2,443,831 km (0.067 R)
• M14: 2,713,705 km (0.08 R)
• M15: 2,768,757 km (0.109 R)
• M16: 3,251,959 km (0.107 R)
• M17: 3,638,819 km (0.084 R)
• M18: 3,669,187 km (0.107 R)
• M19: 3,730,223 km (0.117 R)
• M20: 3,760,741 km (0.08 R)
• M21: 4,293,908 km (0.118 R)
• M22: 5,290,977 km (0.112 R)
• M23: 5,359,942 km (0.101 R)
• M24: 5,533,625 km (0.089 R)
• M25: 6,319,164 km (0.043 R)
• M26: 6,429,118 km (0.088 R)
• M27: 6,650,523 km (0.079 R)
• M28: 6,687,773 km (0.09 R)
• M29: 6,949,868 km (0.079 R)
• M30: 7,639,215 km (0.082 R)
• M31: 8,470,531 km (0.096 R)
• M32: 8,917,230 km (0.064 R)
• M33: 8,958,220 km (0.09 R)
• M34: 9,122,927 km (0.11 R)
• M35: 9,791,330 km (0.083 R)
• M36: 9,833,666 km (0.107 R)
• M37: 10,823,256 km (0.12 R)
• M38: 11,396,515 km (0.09 R)
• M39: 11,440,946 km (0.079 R)
• M40: 12,343,021 km (0.05 R)
• M41: 13,502,405 km (0.115 R)
• M42: 13,643,924 km (0.088 R)
• M43: 13,691,197 km (0.089 R)
• M44: 14,118,897 km (0.091 R)
• M45: 14,166,769 km (0.09 R)
• M46: 14,358,553 km (0.111 R)
• M47: 15,085,150 km (0.098 R)
• M48: 15,923,197 km (0.088 R)
• M49: 15,972,864 km (0.084 R)
• M50: 16,574,098 km (0.068 R)
• M51: 16,624,512 km (0.088 R)
• M52: 17,953,540 km (0.051 R)
• M53: 18,893,463 km (0.099 R)
• M54: 20,171,328 km (0.107 R)
• M55: 21,366,914 km (0.116 R)
• M56: 21,476,719 km (0.063 R)
• M57: 21,752,129 km (0.066 R)
• M58: 22,084,236 km (0.098 R)
• M59: 22,809,337 km (0.031 R)
• M60: 23,203,079 km (0.055 R)
• M61: 23,485,669 km (0.048 R)
• M62: 24,684,845 km (0.106 R)
• M63: 25,437,173 km (0.102 R)
• M64: 26,020,904 km (0.115 R)
• M65: 26,079,546 km (0.085 R)
• M66: 26,491,090 km (0.111 R)
• M67: 26,609,123 km (0.064 R)
• M68: 26,964,119 km (0.08 R)
• M69: 28,158,807 km (0.114 R)
• M70: 30,044,488 km (0.116 R)
• M71: 31,845,048 km (0.116 R)
• M72: 32,096,074 km (0.098 R)
• M73: 32,537,088 km (0.085 R)
• M74: 33,616,287 km (0.049 R)
• M75: 33,744,044 km (0.117 R)
• M76: 34,064,183 km (0.093 R)
• M77: 35,289,539 km (0.086 R)
• M78: 35,419,390 km (0.091 R)
• M79: 35,484,316 km (0.12 R)
• M80: 35,809,841 km (0.108 R)
• M81: 36,070,889 km (0.117 R)
• M82: 38,382,176 km (0.066 R)
• M83: 39,051,327 km (0.049 R)
• M84: 39,521,962 km (0.063 R)
• M85: 41,697,415 km (0.102 R)
• M86: 42,316,301 km (0.072 R)
• M87: 42,523,195 km (0.112 R)
• M88: 43,146,120 km (0.089 R)
• M89: 43,215,534 km (0.105 R)
• M90: 43,354,361 km (0.063 R)
• M91: 43,632,613 km (0.096 R)
• M92: 46,732,280 km (0.108 R)
• M93: 47,088,922 km (0.07 R)
• M94: 47,374,953 km (0.056 R)
• M95: 47,805,047 km (0.108 R)

Planet 5 - Ice Giant

Semi-Major Axis: 9.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 805.9

Radius: 4.4

Gravity: 41.63 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 7.73 AU - 12.11 AU

Year: 19866 Days

Day: 20.4 Hours

Environment

Temp: -232 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 79,964,552 km

• M1: 101,577 km (0.108 R)
• M2: 231,877 km (0.12 R)
• M3: 409,300 km (0.101 R)
• M4: 555,756 km (0.103 R)
• M5: 623,374 km (0.079 R)
• M6: 1,378,993 km (0.071 R)
• M7: 1,695,991 km (0.109 R)
• M8: 1,965,566 km (0.109 R)
• M9: 2,176,499 km (0.104 R)
• M10: 2,284,659 km (0.088 R)
• M11: 2,581,760 km (0.097 R)
• M12: 3,543,974 km (0.117 R)
• M13: 5,904,778 km (0.094 R)
• M14: 6,055,871 km (0.112 R)
• M15: 6,413,261 km (0.091 R)
• M16: 6,672,813 km (0.104 R)
• M17: 7,148,534 km (0.116 R)
• M18: 7,689,929 km (0.117 R)
• M19: 7,965,488 km (0.113 R)
• M20: 8,020,989 km (0.06 R)
• M21: 8,132,439 km (0.112 R)
• M22: 8,356,836 km (0.069 R)
• M23: 9,745,254 km (0.028 R)
• M24: 10,163,530 km (0.081 R)
• M25: 12,598,833 km (0.087 R)
• M26: 12,728,385 km (0.101 R)
• M27: 12,923,461 km (0.073 R)
• M28: 13,054,209 km (0.1 R)
• M29: 13,382,726 km (0.1 R)
• M30: 14,791,938 km (0.094 R)
• M31: 14,860,304 km (0.095 R)
• M32: 15,548,903 km (0.091 R)
• M33: 15,618,317 km (0.045 R)
• M34: 16,743,143 km (0.101 R)
• M35: 17,603,780 km (0.072 R)
• M36: 18,625,832 km (0.107 R)
• M37: 18,699,584 km (0.08 R)
• M38: 20,119,118 km (0.085 R)
• M39: 20,727,084 km (0.104 R)
• M40: 21,110,055 km (0.105 R)
• M41: 22,744,262 km (0.096 R)
• M42: 23,856,073 km (0.052 R)
• M43: 24,661,059 km (0.118 R)
• M44: 24,985,537 km (0.067 R)
• M45: 25,229,830 km (0.067 R)
• M46: 25,393,191 km (0.119 R)
• M47: 25,967,498 km (0.035 R)
• M48: 26,463,115 km (0.072 R)
• M49: 27,296,226 km (0.059 R)
• M50: 29,330,308 km (0.056 R)
• M51: 30,019,057 km (0.035 R)
• M52: 30,974,838 km (0.058 R)
• M53: 31,852,379 km (0.09 R)
• M54: 32,916,319 km (0.097 R)
• M55: 33,363,018 km (0.08 R)
• M56: 34,443,115 km (0.046 R)
• M57: 35,901,245 km (0.12 R)
• M58: 37,286,372 km (0.089 R)
• M59: 38,407,009 km (0.102 R)
• M60: 40,203,829 km (0.077 R)
• M61: 40,299,123 km (0.072 R)
• M62: 42,124,666 km (0.117 R)
• M63: 42,415,335 km (0.105 R)
• M64: 43,878,701 km (0.078 R)
• M65: 46,854,801 km (0.113 R)
• M66: 49,690,728 km (0.109 R)
• M67: 49,793,053 km (0.099 R)
• M68: 51,336,155 km (0.079 R)
• M69: 51,439,527 km (0.095 R)
• M70: 52,269,346 km (0.073 R)
• M71: 53,627,396 km (0.106 R)
• M72: 54,891,199 km (0.078 R)
• M73: 55,526,840 km (0.085 R)
• M74: 56,164,725 km (0.103 R)
• M75: 56,805,303 km (0.096 R)
• M76: 57,019,228 km (0.103 R)
• M77: 58,416,921 km (0.086 R)
• M78: 59,608,319 km (0.101 R)
• M79: 62,345,661 km (0.117 R)
• M80: 64,007,693 km (0.066 R)
• M81: 64,118,994 km (0.092 R)
• M82: 64,453,345 km (0.092 R)
• M83: 65,347,791 km (0.111 R)
• M84: 66,697,163 km (0.068 R)
• M85: 67,262,045 km (0.111 R)
• M86: 68,396,745 km (0.115 R)
• M87: 68,852,270 km (0.074 R)
• M88: 69,881,055 km (0.061 R)
• M89: 70,110,388 km (0.07 R)
• M90: 76,986,804 km (0.08 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: 206 - 12,641 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit