🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 280.3

Radius: 9.4

Gravity: 3.17 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.64 AU - 0.72 AU

Year: 380 Days

Day: 11 Hours

Environment

Temp: -160 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 41,332,733 km

• M1: 118,781 km (0.073 R)
• M2: 181,612 km (0.074 R)
• M3: 246,088 km (0.105 R)
• M4: 319,391 km (0.076 R)
• M5: 388,356 km (0.103 R)
• M6: 476,918 km (0.078 R)
• M7: 590,762 km (0.114 R)
• M8: 674,238 km (0.108 R)
• M9: 827,575 km (0.079 R)
• M10: 978,520 km (0.101 R)
• M11: 1,090,718 km (0.071 R)
• M12: 1,176,737 km (0.06 R)
• M13: 1,241,812 km (0.11 R)
• M14: 1,312,273 km (0.106 R)
• M15: 1,432,699 km (0.064 R)
• M16: 1,540,110 km (0.042 R)
• M17: 1,633,160 km (0.12 R)
• M18: 1,706,463 km (0.113 R)
• M19: 1,802,954 km (0.078 R)
• M20: 2,033,783 km (0.088 R)
• M21: 2,103,496 km (0.037 R)
• M22: 2,255,188 km (0.111 R)
• M23: 2,346,891 km (0.097 R)
• M24: 2,444,728 km (0.097 R)
• M25: 2,509,205 km (0.087 R)
• M26: 2,629,631 km (0.113 R)
• M27: 2,695,754 km (0.069 R)
• M28: 2,850,288 km (0.109 R)
• M29: 2,923,442 km (0.087 R)
• M30: 3,013,200 km (0.109 R)
• M31: 3,103,857 km (0.107 R)
• M32: 3,337,229 km (0.101 R)
• M33: 3,397,816 km (0.118 R)
• M34: 3,492,213 km (0.118 R)
• M35: 3,570,752 km (0.056 R)
• M36: 3,655,424 km (0.088 R)
• M37: 3,746,529 km (0.089 R)
• M38: 3,838,532 km (0.051 R)
• M39: 3,919,464 km (0.099 R)
• M40: 4,012,813 km (0.028 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 995.1

Radius: 12

Gravity: 6.91 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.89 AU - 1.05 AU

Year: 648 Days

Day: 8.1 Hours

Environment

Temp: -167 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 41,332,733 km

• M1: 153,188 km (0.071 R)
• M2: 242,648 km (0.118 R)
• M3: 344,075 km (0.118 R)
• M4: 489,335 km (0.1 R)
• M5: 609,911 km (0.028 R)
• M6: 705,354 km (0.085 R)
• M7: 790,326 km (0.101 R)
• M8: 873,502 km (0.118 R)
• M9: 1,001,408 km (0.077 R)
• M10: 1,123,630 km (0.045 R)
• M11: 1,199,625 km (0.117 R)
• M12: 1,310,328 km (0.098 R)
• M13: 1,404,275 km (0.089 R)
• M14: 1,528,591 km (0.103 R)
• M15: 1,642,285 km (0.076 R)
• M16: 1,744,162 km (0.091 R)
• M17: 2,126,085 km (0.101 R)
• M18: 2,221,678 km (0.058 R)
• M19: 2,593,578 km (0.112 R)
• M20: 2,739,287 km (0.084 R)
• M21: 2,826,203 km (0.104 R)
• M22: 2,967,423 km (0.03 R)
• M23: 3,275,296 km (0.081 R)
• M24: 3,414,571 km (0.09 R)
• M25: 3,517,944 km (0.072 R)
• M26: 3,593,790 km (0.061 R)
• M27: 3,679,659 km (0.074 R)
• M28: 3,834,343 km (0.117 R)
• M29: 3,991,122 km (0.084 R)
• M30: 4,090,305 km (0.108 R)
• M31: 4,180,213 km (0.073 R)
• M32: 4,311,261 km (0.028 R)
• M33: 4,412,988 km (0.112 R)
• M34: 4,608,512 km (0.104 R)
• M35: 4,838,594 km (0.077 R)
• M36: 4,933,887 km (0.116 R)
• M37: 5,029,780 km (0.105 R)
• M38: 5,169,354 km (0.109 R)
• M39: 5,255,822 km (0.115 R)
• M40: 5,397,491 km (0.113 R)
• M41: 5,518,516 km (0.102 R)
• M42: 5,640,289 km (0.059 R)
• M43: 6,113,616 km (0.035 R)
• M44: 6,239,877 km (0.086 R)
• M45: 6,343,698 km (0.104 R)
• M46: 6,553,135 km (0.077 R)
• M47: 6,682,238 km (0.079 R)
• M48: 6,871,629 km (0.107 R)
• M49: 7,110,836 km (0.067 R)
• M50: 7,328,500 km (0.116 R)
• M51: 7,487,074 km (0.103 R)
• M52: 7,994,660 km (0.12 R)
• M53: 8,654,686 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 956.7

Radius: 10

Gravity: 9.57 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.06 AU - 1.4 AU

Year: 925 Days

Day: 11.2 Hours

Environment

Temp: -184 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (63)

Outer Limit: 41,332,733 km

• M1: 127,158 km (0.091 R)
• M2: 195,375 km (0.088 R)
• M3: 312,360 km (0.086 R)
• M4: 503,696 km (0.105 R)
• M5: 626,366 km (0.093 R)
• M6: 710,291 km (0.075 R)
• M7: 785,688 km (0.105 R)
• M8: 870,510 km (0.12 R)
• M9: 1,014,722 km (0.112 R)
• M10: 1,093,560 km (0.026 R)
• M11: 1,182,122 km (0.097 R)
• M12: 1,511,537 km (0.086 R)
• M13: 1,653,056 km (0.11 R)
• M14: 1,729,800 km (0.115 R)
• M15: 1,842,896 km (0.096 R)
• M16: 2,122,794 km (0.087 R)
• M17: 2,377,709 km (0.114 R)
• M18: 2,455,200 km (0.079 R)
• M19: 2,563,210 km (0.09 R)
• M20: 2,672,716 km (0.12 R)
• M21: 2,814,385 km (0.085 R)
• M22: 2,886,341 km (0.104 R)
• M23: 3,000,484 km (0.074 R)
• M24: 3,211,866 km (0.09 R)
• M25: 3,351,890 km (0.087 R)
• M26: 3,461,096 km (0.068 R)
• M27: 3,571,500 km (0.087 R)
• M28: 3,795,747 km (0.12 R)
• M29: 3,898,221 km (0.108 R)
• M30: 3,967,036 km (0.046 R)
• M31: 4,105,863 km (0.105 R)
• M32: 4,222,849 km (0.118 R)
• M33: 4,568,420 km (0.077 R)
• M34: 4,653,242 km (0.027 R)
• M35: 4,947,950 km (0.102 R)
• M36: 5,022,599 km (0.056 R)
• M37: 5,337,802 km (0.085 R)
• M38: 5,414,396 km (0.073 R)
• M39: 5,555,766 km (0.041 R)
• M40: 5,855,410 km (0.096 R)
• M41: 5,974,191 km (0.116 R)
• M42: 6,716,944 km (0.036 R)
• M43: 6,855,173 km (0.104 R)
• M44: 6,966,474 km (0.082 R)
• M45: 7,474,508 km (0.118 R)
• M46: 7,863,462 km (0.055 R)
• M47: 8,155,926 km (0.109 R)
• M48: 8,288,620 km (0.104 R)
• M49: 8,392,441 km (0.067 R)
• M50: 8,631,199 km (0.076 R)
• M51: 8,887,310 km (0.097 R)
• M52: 9,145,965 km (0.087 R)
• M53: 9,268,635 km (0.059 R)
• M54: 9,453,538 km (0.08 R)
• M55: 9,531,030 km (0.032 R)
• M56: 9,702,020 km (0.103 R)
• M57: 9,780,110 km (0.067 R)
• M58: 9,937,039 km (0.082 R)
• M59: 10,126,280 km (0.047 R)
• M60: 10,620,850 km (0.106 R)
• M61: 10,733,647 km (0.115 R)
• M62: 10,798,274 km (0.06 R)
• M63: 10,863,049 km (0.047 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168

Radius: 12.3

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 1.26 AU - 1.6 AU

Year: 1160 Days

Day: 8.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 41,332,733 km

• M1: 153,188 km (0.072 R)
• M2: 255,663 km (0.119 R)
• M3: 347,815 km (0.085 R)
• M4: 450,589 km (0.114 R)
• M5: 534,513 km (0.086 R)
• M6: 646,712 km (0.067 R)
• M7: 868,565 km (0.086 R)
• M8: 994,527 km (0.088 R)
• M9: 1,215,333 km (0.051 R)
• M10: 1,405,173 km (0.077 R)
• M11: 1,537,268 km (0.081 R)
• M12: 1,680,134 km (0.045 R)
• M13: 1,860,250 km (0.105 R)
• M14: 2,006,257 km (0.086 R)
• M15: 2,177,098 km (0.108 R)
• M16: 2,281,966 km (0.04 R)
• M17: 2,431,713 km (0.11 R)
• M18: 2,548,101 km (0.102 R)
• M19: 2,666,283 km (0.064 R)
• M20: 2,824,408 km (0.086 R)
• M21: 2,908,482 km (0.116 R)
• M22: 2,993,453 km (0.063 R)
• M23: 3,237,298 km (0.12 R)
• M24: 3,398,265 km (0.079 R)
• M25: 3,702,996 km (0.102 R)
• M26: 3,871,443 km (0.068 R)
• M27: 3,973,918 km (0.057 R)
• M28: 4,216,266 km (0.099 R)
• M29: 4,339,236 km (0.099 R)
• M30: 4,517,108 km (0.081 R)
• M31: 4,706,499 km (0.107 R)
• M32: 4,788,478 km (0.11 R)
• M33: 4,889,457 km (0.053 R)
• M34: 5,000,309 km (0.113 R)
• M35: 5,177,582 km (0.098 R)
• M36: 5,452,094 km (0.118 R)
• M37: 5,557,561 km (0.064 R)
• M38: 5,634,753 km (0.095 R)
• M39: 5,770,588 km (0.06 R)
• M40: 5,887,873 km (0.063 R)
• M41: 5,966,561 km (0.062 R)
• M42: 6,234,491 km (0.094 R)
• M43: 6,405,332 km (0.075 R)
• M44: 6,537,128 km (0.087 R)
• M45: 6,792,940 km (0.032 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 495.5

Radius: 9.8

Gravity: 5.16 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 2.27 AU - 2.97 AU

Year: 2876 Days

Day: 8.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 41,332,733 km

• M1: 130,599 km (0.044 R)
• M2: 287,976 km (0.091 R)
• M3: 423,512 km (0.105 R)
• M4: 575,353 km (0.114 R)
• M5: 710,889 km (0.118 R)
• M6: 945,159 km (0.07 R)
• M7: 1,035,516 km (0.089 R)
• M8: 1,485,507 km (0.058 R)
• M9: 1,580,053 km (0.088 R)
• M10: 1,965,866 km (0.055 R)
• M11: 2,070,285 km (0.104 R)
• M12: 2,149,721 km (0.071 R)
• M13: 2,450,264 km (0.089 R)
• M14: 2,793,441 km (0.069 R)
• M15: 2,911,324 km (0.052 R)
• M16: 3,030,853 km (0.041 R)
• M17: 3,167,286 km (0.082 R)
• M18: 3,274,847 km (0.081 R)
• M19: 3,383,754 km (0.038 R)
• M20: 3,462,144 km (0.119 R)
• M21: 3,978,855 km (0.101 R)
• M22: 4,229,431 km (0.09 R)
• M23: 4,297,199 km (0.119 R)
• M24: 5,137,789 km (0.092 R)
• M25: 5,971,199 km (0.11 R)
• M26: 6,297,023 km (0.096 R)
• M27: 6,471,903 km (0.078 R)
• M28: 7,431,424 km (0.058 R)
• M29: 7,534,048 km (0.093 R)
• M30: 7,906,995 km (0.063 R)
• M31: 8,222,497 km (0.109 R)
• M32: 8,307,319 km (0.093 R)
• M33: 8,714,226 km (0.053 R)
• M34: 8,996,367 km (0.092 R)
• M35: 9,259,510 km (0.112 R)
• M36: 9,458,475 km (0.052 R)
• M37: 9,525,196 km (0.096 R)
• M38: 9,860,893 km (0.12 R)
• M39: 10,383,139 km (0.073 R)
• M40: 10,451,954 km (0.051 R)
• M41: 10,682,335 km (0.089 R)
• M42: 11,054,535 km (0.05 R)
• M43: 11,336,377 km (0.061 R)
• M44: 11,478,345 km (0.105 R)
• M45: 11,596,977 km (0.109 R)
• M46: 11,835,585 km (0.086 R)
• M47: 12,003,434 km (0.099 R)
• M48: 12,414,678 km (0.054 R)
• M49: 12,536,451 km (0.104 R)
• M50: 12,707,741 km (0.09 R)
• M51: 12,879,778 km (0.065 R)
• M52: 13,151,598 km (0.083 R)
• M53: 13,525,443 km (0.093 R)
• M54: 13,600,690 km (0.041 R)
• M55: 13,953,293 km (0.083 R)
• M56: 14,513,686 km (0.092 R)
• M57: 14,590,729 km (0.111 R)
• M58: 14,977,589 km (0.091 R)
• M59: 15,185,381 km (0.093 R)
• M60: 15,472,609 km (0.043 R)
• M61: 15,708,973 km (0.041 R)
• M62: 16,158,814 km (0.115 R)
• M63: 16,291,807 km (0.057 R)
• M64: 16,666,400 km (0.076 R)
• M65: 16,935,825 km (0.094 R)
• M66: 17,206,448 km (0.12 R)
• M67: 17,615,299 km (0.104 R)
• M68: 17,999,765 km (0.071 R)
• M69: 18,137,844 km (0.104 R)
• M70: 18,359,249 km (0.065 R)
• M71: 18,609,526 km (0.114 R)
• M72: 18,721,126 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 435.4

Radius: 10.2

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 3.02 AU - 3.34 AU

Year: 3846 Days

Day: 10.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 41,332,733 km

• M1: 183,557 km (0.049 R)
• M2: 262,694 km (0.094 R)
• M3: 477,666 km (0.1 R)
• M4: 554,260 km (0.06 R)
• M5: 626,366 km (0.096 R)
• M6: 741,407 km (0.106 R)
• M7: 843,134 km (0.077 R)
• M8: 1,016,368 km (0.11 R)
• M9: 1,213,688 km (0.116 R)
• M10: 1,298,659 km (0.07 R)
• M11: 1,423,723 km (0.098 R)
• M12: 1,964,220 km (0.115 R)
• M13: 2,079,560 km (0.083 R)
• M14: 2,532,692 km (0.107 R)
• M15: 2,851,784 km (0.087 R)
• M16: 3,200,796 km (0.095 R)
• M17: 3,389,140 km (0.109 R)
• M18: 4,460,859 km (0.092 R)
• M19: 4,537,154 km (0.112 R)
• M20: 4,788,029 km (0.096 R)
• M21: 4,905,314 km (0.029 R)
• M22: 5,103,083 km (0.093 R)
• M23: 5,222,910 km (0.072 R)
• M24: 5,732,740 km (0.043 R)
• M25: 6,004,111 km (0.049 R)
• M26: 6,429,866 km (0.106 R)
• M27: 6,602,951 km (0.095 R)
• M28: 6,733,849 km (0.12 R)
• M29: 6,799,522 km (0.114 R)
• M30: 6,865,495 km (0.119 R)
• M31: 7,176,060 km (0.041 R)
• M32: 7,423,495 km (0.112 R)
• M33: 7,650,734 km (0.088 R)
• M34: 7,996,006 km (0.093 R)
• M35: 8,112,244 km (0.117 R)
• M36: 8,252,417 km (0.114 R)
• M37: 8,678,023 km (0.119 R)
• M38: 8,941,614 km (0.074 R)
• M39: 9,280,902 km (0.069 R)
• M40: 9,550,478 km (0.098 R)
• M41: 9,897,395 km (0.1 R)
• M42: 10,374,762 km (0.083 R)
• M43: 10,705,672 km (0.042 R)
• M44: 10,988,562 km (0.102 R)
• M45: 11,325,905 km (0.109 R)
• M46: 12,170,834 km (0.074 R)
• M47: 12,331,652 km (0.113 R)
• M48: 12,519,995 km (0.096 R)
• M49: 12,655,082 km (0.101 R)
• M50: 12,790,768 km (0.052 R)
• M51: 13,448,549 km (0.079 R)
• M52: 14,173,650 km (0.089 R)
• M53: 14,286,297 km (0.102 R)
• M54: 14,399,244 km (0.109 R)
• M55: 15,025,909 km (0.111 R)
• M56: 15,198,396 km (0.068 R)
• M57: 15,284,863 km (0.09 R)
• M58: 15,371,480 km (0.084 R)
• M59: 15,719,744 km (0.1 R)
• M60: 15,982,588 km (0.118 R)
• M61: 16,394,431 km (0.03 R)
• M62: 16,631,394 km (0.117 R)
• M63: 16,720,404 km (0.055 R)
• M64: 17,198,519 km (0.083 R)
• M65: 17,650,754 km (0.117 R)
• M66: 17,832,814 km (0.048 R)
• M67: 18,413,254 km (0.098 R)
• M68: 18,567,041 km (0.045 R)
• M69: 19,093,176 km (0.094 R)
• M70: 19,248,908 km (0.055 R)
• M71: 19,404,938 km (0.113 R)
• M72: 19,624,249 km (0.05 R)
• M73: 19,749,911 km (0.072 R)
• M74: 20,191,823 km (0.077 R)
• M75: 20,350,397 km (0.069 R)
• M76: 20,573,148 km (0.098 R)
• M77: 20,956,867 km (0.106 R)
• M78: 21,117,535 km (0.104 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 796.8

Radius: 12.5

Gravity: 5.1 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 4.61 AU - 5.25 AU

Year: 7424 Days

Day: 6.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 41,332,733 km

• M1: 162,164 km (0.09 R)
• M2: 254,915 km (0.049 R)
• M3: 472,580 km (0.09 R)
• M4: 730,636 km (0.089 R)
• M5: 1,122,283 km (0.081 R)
• M6: 1,803,402 km (0.112 R)
• M7: 1,931,757 km (0.11 R)
• M8: 2,692,612 km (0.093 R)
• M9: 2,790,748 km (0.091 R)
• M10: 3,067,205 km (0.066 R)
• M11: 3,247,770 km (0.105 R)
• M12: 3,921,708 km (0.095 R)
• M13: 4,231,825 km (0.098 R)
• M14: 4,579,490 km (0.026 R)
• M15: 4,667,902 km (0.032 R)
• M16: 5,027,236 km (0.118 R)
• M17: 5,271,829 km (0.114 R)
• M18: 5,836,411 km (0.106 R)
• M19: 5,964,617 km (0.034 R)
• M20: 6,619,407 km (0.102 R)
• M21: 7,819,929 km (0.104 R)
• M22: 7,961,449 km (0.036 R)
• M23: 8,318,988 km (0.118 R)
• M24: 9,086,874 km (0.083 R)
• M25: 9,535,817 km (0.111 R)
• M26: 9,763,056 km (0.063 R)
• M27: 10,377,903 km (0.088 R)
• M28: 11,243,626 km (0.055 R)
• M29: 11,523,973 km (0.108 R)
• M30: 11,644,848 km (0.032 R)
• M31: 12,050,856 km (0.118 R)
• M32: 12,544,230 km (0.111 R)
• M33: 13,465,753 km (0.09 R)
• M34: 14,279,266 km (0.03 R)
• M35: 15,064,655 km (0.087 R)
• M36: 15,285,312 km (0.105 R)
• M37: 15,729,767 km (0.05 R)
• M38: 16,043,474 km (0.042 R)
• M39: 16,178,561 km (0.118 R)
• M40: 16,359,275 km (0.05 R)
• M41: 16,859,830 km (0.074 R)
• M42: 17,226,943 km (0.09 R)
• M43: 18,532,483 km (0.064 R)
• M44: 18,674,302 km (0.086 R)
• M45: 19,628,737 km (0.083 R)
• M46: 20,355,034 km (0.094 R)
• M47: 20,746,083 km (0.084 R)
• M48: 20,991,573 km (0.056 R)
• M49: 21,188,893 km (0.116 R)
• M50: 21,337,144 km (0.087 R)
• M51: 23,807,753 km (0.117 R)
• M52: 23,961,989 km (0.097 R)
• M53: 24,219,746 km (0.114 R)
• M54: 26,208,500 km (0.117 R)
• M55: 26,367,821 km (0.091 R)
• M56: 26,527,293 km (0.064 R)
• M57: 28,303,618 km (0.089 R)
• M58: 29,398,824 km (0.102 R)
• M59: 31,179,787 km (0.083 R)
• M60: 31,574,127 km (0.11 R)
• M61: 32,140,205 km (0.106 R)
• M62: 32,595,431 km (0.053 R)
• M63: 32,709,574 km (0.071 R)
• M64: 33,627,657 km (0.097 R)
• M65: 33,858,486 km (0.096 R)
• M66: 34,263,747 km (0.1 R)
• M67: 35,606,687 km (0.117 R)
• M68: 35,724,271 km (0.093 R)
• M69: 36,847,751 km (0.046 R)
• M70: 39,250,592 km (0.088 R)
• M71: 39,859,305 km (0.06 R)
• M72: 40,042,413 km (0.041 R)
• M73: 40,348,491 km (0.073 R)
• M74: 40,655,166 km (0.08 R)
• M75: 41,024,224 km (0.113 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 364 - 11,132 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit