🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.69

Radius: 0.86

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.47 AU - 0.55 AU

Year: 239 Days

Day: 47.4 Hours

Environment

Temp: -116 °C

Axial Tilt: 39.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.45

Radius: 0.73

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 0.62 AU - 0.62 AU

Year: 320 Days

Day: 32.4 Hours

Environment

Temp: -140 °C

Axial Tilt: 12.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 817.7

Radius: 14.7

Gravity: 3.78 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 1.19 AU - 1.81 AU

Year: 1205 Days

Day: 10.1 Hours

Environment

Temp: -169 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (62)

Outer Limit: 22,441,939 km

• M1: 183,856 km (0.112 R)
• M2: 284,236 km (0.106 R)
• M3: 376,089 km (0.047 R)
• M4: 569,369 km (0.104 R)
• M5: 684,560 km (0.1 R)
• M6: 885,769 km (0.037 R)
• M7: 1,002,007 km (0.088 R)
• M8: 1,259,764 km (0.1 R)
• M9: 1,513,482 km (0.103 R)
• M10: 1,674,150 km (0.106 R)
• M11: 1,926,372 km (0.05 R)
• M12: 2,111,424 km (0.08 R)
• M13: 2,292,587 km (0.083 R)
• M14: 2,447,571 km (0.054 R)
• M15: 2,638,308 km (0.112 R)
• M16: 2,801,071 km (0.09 R)
• M17: 3,091,440 km (0.086 R)
• M18: 3,263,478 km (0.111 R)
• M19: 3,438,806 km (0.073 R)
• M20: 3,738,152 km (0.09 R)
• M21: 3,921,858 km (0.099 R)
• M22: 4,058,590 km (0.093 R)
• M23: 4,234,966 km (0.047 R)
• M24: 4,452,631 km (0.101 R)
• M25: 4,556,302 km (0.104 R)
• M26: 4,726,694 km (0.079 R)
• M27: 4,845,774 km (0.068 R)
• M28: 4,992,829 km (0.109 R)
• M29: 5,087,225 km (0.101 R)
• M30: 5,223,060 km (0.082 R)
• M31: 5,554,120 km (0.055 R)
• M32: 5,906,274 km (0.096 R)
• M33: 6,020,566 km (0.113 R)
• M34: 6,280,418 km (0.109 R)
• M35: 6,455,747 km (0.1 R)
• M36: 6,811,341 km (0.108 R)
• M37: 6,946,428 km (0.066 R)
• M38: 7,052,044 km (0.064 R)
• M39: 7,188,626 km (0.113 R)
• M40: 7,433,668 km (0.028 R)
• M41: 7,603,761 km (0.1 R)
• M42: 7,822,173 km (0.111 R)
• M43: 7,932,277 km (0.106 R)
• M44: 8,090,253 km (0.056 R)
• M45: 8,586,918 km (0.074 R)
• M46: 8,716,769 km (0.106 R)
• M47: 8,912,592 km (0.043 R)
• M48: 9,093,456 km (0.036 R)
• M49: 9,292,272 km (0.108 R)
• M50: 9,492,434 km (0.116 R)
• M51: 9,609,868 km (0.048 R)
• M52: 9,846,233 km (0.046 R)
• M53: 10,136,004 km (0.079 R)
• M54: 10,428,468 km (0.085 R)
• M55: 10,549,642 km (0.101 R)
• M56: 10,653,912 km (0.118 R)
• M57: 10,758,630 km (0.107 R)
• M58: 10,933,809 km (0.103 R)
• M59: 11,162,993 km (0.114 R)
• M60: 11,500,785 km (0.093 R)
• M61: 12,004,930 km (0.106 R)
• M62: 12,332,699 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 599.7

Radius: 14

Gravity: 3.06 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 1.9 AU - 2.26 AU

Year: 1968 Days

Day: 9.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 169.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (65)

Outer Limit: 22,441,939 km

• M1: 185,053 km (0.11 R)
• M2: 356,043 km (0.062 R)
• M3: 514,766 km (0.113 R)
• M4: 741,407 km (0.073 R)
• M5: 969,095 km (0.116 R)
• M6: 1,258,866 km (0.043 R)
• M7: 1,434,494 km (0.093 R)
• M8: 1,566,738 km (0.059 R)
• M9: 1,682,078 km (0.034 R)
• M10: 1,800,410 km (0.07 R)
• M11: 1,932,804 km (0.088 R)
• M12: 2,103,047 km (0.059 R)
• M13: 2,266,707 km (0.089 R)
• M14: 2,398,353 km (0.097 R)
• M15: 2,669,574 km (0.11 R)
• M16: 2,770,702 km (0.045 R)
• M17: 3,003,177 km (0.063 R)
• M18: 3,175,065 km (0.113 R)
• M19: 3,570,602 km (0.085 R)
• M20: 3,867,105 km (0.065 R)
• M21: 4,186,496 km (0.105 R)
• M22: 4,379,328 km (0.12 R)
• M23: 4,590,261 km (0.068 R)
• M24: 4,712,333 km (0.057 R)
• M25: 4,835,602 km (0.119 R)
• M26: 5,006,742 km (0.114 R)
• M27: 5,132,553 km (0.05 R)
• M28: 6,176,746 km (0.047 R)
• M29: 6,636,910 km (0.111 R)
• M30: 7,196,705 km (0.102 R)
• M31: 7,321,170 km (0.056 R)
• M32: 7,410,480 km (0.062 R)
• M33: 7,572,345 km (0.118 R)
• M34: 7,826,362 km (0.075 R)
• M35: 8,175,673 km (0.076 R)
• M36: 8,436,422 km (0.092 R)
• M37: 8,530,220 km (0.055 R)
• M38: 8,718,863 km (0.073 R)
• M39: 8,851,706 km (0.09 R)
• M40: 9,023,594 km (0.114 R)
• M41: 9,157,933 km (0.1 R)
• M42: 9,312,467 km (0.077 R)
• M43: 9,467,750 km (0.046 R)
• M44: 9,565,288 km (0.099 R)
• M45: 9,899,340 km (0.062 R)
• M46: 10,038,017 km (0.059 R)
• M47: 10,417,846 km (0.039 R)
• M48: 10,558,917 km (0.119 R)
• M49: 10,781,967 km (0.096 R)
• M50: 11,047,504 km (0.102 R)
• M51: 11,481,188 km (0.076 R)
• M52: 11,627,046 km (0.065 R)
• M53: 11,815,389 km (0.118 R)
• M54: 11,983,687 km (0.044 R)
• M55: 12,729,432 km (0.09 R)
• M56: 12,880,377 km (0.112 R)
• M57: 13,097,144 km (0.027 R)
• M58: 13,534,119 km (0.09 R)
• M59: 13,776,618 km (0.092 R)
• M60: 14,243,512 km (0.12 R)
• M61: 14,377,851 km (0.119 R)
• M62: 14,490,050 km (0.089 R)
• M63: 14,806,000 km (0.053 R)
• M64: 14,919,396 km (0.037 R)
• M65: 15,513,748 km (0.057 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 339.7

Radius: 12.7

Gravity: 2.11 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 2.02 AU - 2.84 AU

Year: 2485 Days

Day: 8.5 Hours

Environment

Temp: -195 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (62)

Outer Limit: 22,441,939 km

• M1: 164,857 km (0.106 R)
• M2: 304,282 km (0.055 R)
• M3: 456,573 km (0.091 R)
• M4: 558,598 km (0.069 R)
• M5: 677,230 km (0.088 R)
• M6: 790,176 km (0.119 R)
• M7: 893,997 km (0.107 R)
• M8: 1,244,205 km (0.108 R)
• M9: 1,348,176 km (0.087 R)
• M10: 1,465,311 km (0.098 R)
• M11: 1,545,346 km (0.116 R)
• M12: 1,647,521 km (0.093 R)
• M13: 1,816,118 km (0.053 R)
• M14: 1,913,506 km (0.119 R)
• M15: 2,321,161 km (0.107 R)
• M16: 2,415,557 km (0.102 R)
• M17: 2,511,299 km (0.106 R)
• M18: 2,620,506 km (0.115 R)
• M19: 2,793,740 km (0.112 R)
• M20: 3,125,698 km (0.028 R)
• M21: 3,256,746 km (0.109 R)
• M22: 3,688,784 km (0.1 R)
• M23: 3,869,648 km (0.112 R)
• M24: 4,081,927 km (0.09 R)
• M25: 4,400,421 km (0.111 R)
• M26: 4,488,684 km (0.098 R)
• M27: 4,772,172 km (0.073 R)
• M28: 5,061,644 km (0.059 R)
• M29: 5,388,366 km (0.101 R)
• M30: 5,514,626 km (0.117 R)
• M31: 5,705,962 km (0.086 R)
• M32: 5,834,616 km (0.072 R)
• M33: 6,144,433 km (0.115 R)
• M34: 6,292,984 km (0.081 R)
• M35: 6,442,881 km (0.115 R)
• M36: 7,157,809 km (0.063 R)
• M37: 7,279,432 km (0.055 R)
• M38: 8,150,242 km (0.106 R)
• M39: 8,423,407 km (0.062 R)
• M40: 8,829,566 km (0.082 R)
• M41: 8,997,564 km (0.085 R)
• M42: 9,280,005 km (0.12 R)
• M43: 9,374,700 km (0.098 R)
• M44: 9,661,030 km (0.117 R)
• M45: 9,814,967 km (0.106 R)
• M46: 10,281,562 km (0.108 R)
• M47: 10,379,699 km (0.098 R)
• M48: 11,075,329 km (0.088 R)
• M49: 11,276,837 km (0.078 R)
• M50: 11,357,919 km (0.039 R)
• M51: 11,479,692 km (0.101 R)
• M52: 11,601,913 km (0.103 R)
• M53: 12,302,929 km (0.087 R)
• M54: 12,386,255 km (0.056 R)
• M55: 12,721,653 km (0.089 R)
• M56: 13,251,679 km (0.052 R)
• M57: 13,702,567 km (0.11 R)
• M58: 13,832,268 km (0.075 R)
• M59: 14,071,325 km (0.117 R)
• M60: 14,180,382 km (0.09 R)
• M61: 14,311,579 km (0.069 R)
• M62: 14,421,235 km (0.074 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 992.1

Radius: 10.1

Gravity: 9.73 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 2.56 AU - 3.68 AU

Year: 3615 Days

Day: 8.6 Hours

Environment

Temp: -200 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 22,441,939 km

• M1: 135,236 km (0.1 R)
• M2: 203,154 km (0.118 R)
• M3: 344,823 km (0.119 R)
• M4: 469,438 km (0.107 R)
• M5: 632,949 km (0.066 R)
• M6: 757,115 km (0.112 R)
• M7: 940,522 km (0.09 R)
• M8: 1,071,121 km (0.086 R)
• M9: 1,222,065 km (0.103 R)
• M10: 1,336,358 km (0.112 R)
• M11: 1,576,163 km (0.104 R)
• M12: 1,846,187 km (0.077 R)
• M13: 2,323,255 km (0.05 R)
• M14: 2,799,874 km (0.115 R)
• M15: 2,895,018 km (0.112 R)
• M16: 3,187,033 km (0.063 R)
• M17: 3,653,479 km (0.12 R)
• M18: 4,141,318 km (0.09 R)
• M19: 4,293,908 km (0.069 R)
• M20: 4,448,442 km (0.09 R)
• M21: 4,763,047 km (0.083 R)
• M22: 4,877,190 km (0.067 R)
• M23: 5,061,644 km (0.104 R)
• M24: 5,319,251 km (0.064 R)
• M25: 5,629,069 km (0.107 R)
• M26: 5,994,087 km (0.097 R)
• M27: 6,191,856 km (0.073 R)
• M28: 6,341,603 km (0.086 R)
• M29: 6,619,407 km (0.104 R)
• M30: 6,695,851 km (0.091 R)
• M31: 6,978,591 km (0.088 R)
• M32: 7,056,382 km (0.118 R)
• M33: 7,160,652 km (0.092 R)
• M34: 7,265,370 km (0.059 R)
• M35: 7,823,669 km (0.096 R)
• M36: 8,067,215 km (0.112 R)
• M37: 8,203,498 km (0.029 R)
• M38: 8,313,154 km (0.117 R)
• M39: 8,506,285 km (0.11 R)
• M40: 8,700,911 km (0.083 R)
• M41: 9,322,042 km (0.1 R)
• M42: 9,609,120 km (0.11 R)
• M43: 9,782,654 km (0.113 R)
• M44: 10,074,519 km (0.119 R)
• M45: 10,369,077 km (0.105 R)
• M46: 12,352,446 km (0.091 R)
• M47: 12,794,807 km (0.091 R)
• M48: 13,403,371 km (0.065 R)
• M49: 13,467,997 km (0.102 R)
• M50: 13,694,937 km (0.102 R)
• M51: 14,021,360 km (0.067 R)
• M52: 14,648,623 km (0.096 R)
• M53: 15,116,715 km (0.102 R)
• M54: 16,170,782 km (0.099 R)
• M55: 16,377,526 km (0.111 R)
• M56: 17,072,857 km (0.03 R)
• M57: 17,600,788 km (0.107 R)
• M58: 18,889,723 km (0.118 R)
• M59: 19,180,242 km (0.062 R)
• M60: 19,545,560 km (0.108 R)
• M61: 19,876,171 km (0.058 R)
• M62: 20,654,978 km (0.102 R)
• M63: 21,179,767 km (0.088 R)
• M64: 21,899,034 km (0.11 R)
• M65: 22,934,850 km (0.11 R)
• M66: 23,322,607 km (0.108 R)
• M67: 24,222,438 km (0.119 R)
• M68: 24,459,102 km (0.101 R)
• M69: 24,617,227 km (0.078 R)
• M70: 24,934,674 km (0.061 R)
• M71: 25,054,053 km (0.069 R)
• M72: 25,253,317 km (0.119 R)
• M73: 25,453,330 km (0.083 R)
• M74: 25,693,883 km (0.077 R)
• M75: 26,136,842 km (0.071 R)
• M76: 26,298,558 km (0.058 R)
• M77: 26,541,804 km (0.094 R)
• M78: 27,522,119 km (0.097 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 868.5

Radius: 9.8

Gravity: 9.04 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 3.89 AU - 5.69 AU

Year: 6877 Days

Day: 7.9 Hours

Environment

Temp: -219 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 22,441,939 km

• M1: 128,505 km (0.104 R)
• M2: 219,161 km (0.091 R)
• M3: 331,210 km (0.115 R)
• M4: 684,709 km (0.095 R)
• M5: 789,727 km (0.089 R)
• M6: 916,736 km (0.064 R)
• M7: 1,102,985 km (0.103 R)
• M8: 1,246,449 km (0.091 R)
• M9: 1,339,350 km (0.087 R)
• M10: 1,492,987 km (0.091 R)
• M11: 1,592,021 km (0.116 R)
• M12: 1,672,953 km (0.081 R)
• M13: 1,818,063 km (0.1 R)
• M14: 1,924,277 km (0.091 R)
• M15: 2,142,989 km (0.108 R)
• M16: 2,232,898 km (0.093 R)
• M17: 2,822,762 km (0.047 R)
• M18: 3,071,992 km (0.118 R)
• M19: 3,199,450 km (0.1 R)
• M20: 3,406,792 km (0.04 R)
• M21: 3,538,738 km (0.068 R)
• M22: 4,337,141 km (0.119 R)
• M23: 4,625,117 km (0.092 R)
• M24: 5,098,894 km (0.109 R)
• M25: 5,280,655 km (0.076 R)
• M26: 5,464,511 km (0.12 R)
• M27: 5,619,345 km (0.068 R)
• M28: 6,382,743 km (0.067 R)
• M29: 6,480,580 km (0.071 R)
• M30: 6,809,994 km (0.033 R)
• M31: 6,976,796 km (0.03 R)
• M32: 7,657,317 km (0.094 R)
• M33: 7,935,569 km (0.086 R)
• M34: 8,181,807 km (0.101 R)
• M35: 8,394,834 km (0.112 R)
• M36: 9,118,140 km (0.111 R)
• M37: 9,450,097 km (0.04 R)
• M38: 9,673,746 km (0.106 R)
• M39: 10,895,512 km (0.097 R)
• M40: 14,156,447 km (0.081 R)
• M41: 15,407,683 km (0.1 R)
• M42: 15,495,198 km (0.095 R)
• M43: 15,670,975 km (0.08 R)
• M44: 17,509,683 km (0.065 R)
• M45: 18,291,930 km (0.11 R)
• M46: 19,368,436 km (0.105 R)
• M47: 19,652,523 km (0.086 R)
• M48: 20,465,288 km (0.088 R)
• M49: 20,658,120 km (0.096 R)
• M50: 20,754,760 km (0.103 R)
• M51: 21,778,608 km (0.091 R)
• M52: 22,024,846 km (0.107 R)
• M53: 22,968,659 km (0.03 R)
• M54: 23,976,500 km (0.094 R)
• M55: 24,588,205 km (0.097 R)
• M56: 25,826,876 km (0.064 R)
• M57: 26,401,331 km (0.109 R)
• M58: 27,616,216 km (0.111 R)
• M59: 28,903,206 km (0.055 R)
• M60: 29,173,829 km (0.093 R)
• M61: 29,282,287 km (0.091 R)
• M62: 29,990,484 km (0.108 R)
• M63: 30,154,892 km (0.049 R)
• M64: 30,594,261 km (0.106 R)
• M65: 31,368,579 km (0.111 R)
• M66: 32,317,329 km (0.079 R)
• M67: 32,767,170 km (0.079 R)
• M68: 33,957,520 km (0.062 R)
• M69: 35,335,466 km (0.116 R)
• M70: 35,682,683 km (0.091 R)
• M71: 35,798,770 km (0.063 R)
• M72: 36,380,706 km (0.105 R)
• M73: 37,024,575 km (0.117 R)
• M74: 38,204,753 km (0.108 R)
• M75: 38,382,774 km (0.058 R)
• M76: 38,561,245 km (0.106 R)
• M77: 38,680,325 km (0.073 R)
• M78: 39,098,002 km (0.057 R)
• M79: 39,697,291 km (0.104 R)
• M80: 40,360,010 km (0.115 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 96.6

Radius: 13.3

Gravity: 0.55 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 5.41 AU - 5.65 AU

Year: 8531 Days

Day: 12.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 22,441,939 km

• M1: 167,400 km (0.049 R)
• M2: 323,879 km (0.109 R)
• M3: 622,926 km (0.1 R)
• M4: 1,056,909 km (0.12 R)
• M5: 1,173,595 km (0.09 R)
• M6: 1,564,495 km (0.045 R)
• M7: 1,699,282 km (0.1 R)
• M8: 1,966,763 km (0.119 R)
• M9: 2,142,989 km (0.098 R)
• M10: 2,590,586 km (0.053 R)
• M11: 3,308,058 km (0.1 R)
• M12: 3,554,745 km (0.111 R)
• M13: 3,825,816 km (0.086 R)
• M14: 4,407,602 km (0.069 R)
• M15: 4,504,093 km (0.092 R)
• M16: 4,640,376 km (0.044 R)
• M17: 4,758,259 km (0.045 R)
• M18: 4,917,132 km (0.111 R)
• M19: 5,077,651 km (0.111 R)
• M20: 5,280,954 km (0.03 R)
• M21: 5,424,868 km (0.059 R)
• M22: 5,507,745 km (0.041 R)
• M23: 5,843,293 km (0.06 R)
• M24: 6,778,280 km (0.052 R)
• M25: 7,115,324 km (0.1 R)
• M26: 7,366,199 km (0.078 R)
• M27: 7,504,278 km (0.091 R)
• M28: 7,596,729 km (0.076 R)
• M29: 7,899,964 km (0.111 R)
• M30: 8,784,985 km (0.085 R)
• M31: 9,152,847 km (0.096 R)
• M32: 9,525,794 km (0.098 R)
• M33: 10,415,303 km (0.103 R)
• M34: 10,700,287 km (0.105 R)
• M35: 11,040,622 km (0.079 R)
• M36: 11,145,939 km (0.1 R)
• M37: 12,109,798 km (0.119 R)
• M38: 12,491,871 km (0.098 R)
• M39: 12,656,728 km (0.046 R)
• M40: 12,794,807 km (0.093 R)
• M41: 13,044,486 km (0.116 R)
• M42: 13,128,111 km (0.119 R)
• M43: 13,323,934 km (0.11 R)
• M44: 13,436,282 km (0.063 R)
• M45: 13,520,656 km (0.078 R)
• M46: 13,718,424 km (0.075 R)
• M47: 14,145,227 km (0.11 R)
• M48: 15,012,296 km (0.07 R)
• M49: 15,807,259 km (0.118 R)
• M50: 16,105,258 km (0.104 R)
• M51: 16,284,925 km (0.108 R)
• M52: 16,706,641 km (0.117 R)
• M53: 16,979,658 km (0.114 R)
• M54: 17,254,319 km (0.107 R)
• M55: 17,346,172 km (0.1 R)
• M56: 17,838,798 km (0.088 R)
• M57: 17,962,665 km (0.094 R)
• M58: 18,086,831 km (0.119 R)
• M59: 18,336,061 km (0.07 R)
• M60: 18,869,378 km (0.085 R)
• M61: 19,312,337 km (0.063 R)
• M62: 19,598,967 km (0.095 R)
• M63: 20,208,877 km (0.092 R)
• M64: 20,629,696 km (0.076 R)
• M65: 21,348,364 km (0.088 R)
• M66: 22,175,192 km (0.082 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 284 - 18,230 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit