🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 716.5

Radius: 12.5

Gravity: 4.59 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.48 AU - 0.58 AU

Year: 271 Days

Day: 9.5 Hours

Environment

Temp: -151 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 48,473,178 km

• M1: 155,881 km (0.062 R)
• M2: 245,939 km (0.09 R)
• M3: 363,224 km (0.049 R)
• M4: 444,605 km (0.119 R)
• M5: 540,048 km (0.106 R)
• M6: 628,909 km (0.098 R)
• M7: 726,896 km (0.03 R)
• M8: 893,847 km (0.061 R)
• M9: 977,024 km (0.095 R)
• M10: 1,140,085 km (0.098 R)
• M11: 1,296,415 km (0.097 R)
• M12: 1,408,913 km (0.094 R)
• M13: 1,490,294 km (0.06 R)
• M14: 1,666,969 km (0.075 R)
• M15: 1,753,287 km (0.074 R)
• M16: 1,883,587 km (0.119 R)
• M17: 2,056,073 km (0.11 R)
• M18: 2,238,882 km (0.062 R)
• M19: 2,421,990 km (0.099 R)
• M20: 2,541,668 km (0.099 R)
• M21: 2,626,191 km (0.068 R)
• M22: 2,711,611 km (0.089 R)
• M23: 2,940,496 km (0.055 R)
• M24: 3,119,116 km (0.109 R)
• M25: 3,226,976 km (0.113 R)
• M26: 3,347,552 km (0.079 R)
• M27: 3,428,933 km (0.107 R)
• M28: 3,552,201 km (0.117 R)
• M29: 3,635,079 km (0.051 R)
• M30: 3,748,773 km (0.094 R)
• M31: 3,833,445 km (0.085 R)
• M32: 3,912,433 km (0.028 R)
• M33: 4,029,119 km (0.117 R)
• M34: 4,140,570 km (0.062 R)
• M35: 4,240,651 km (0.081 R)
• M36: 4,347,913 km (0.106 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 765.4

Radius: 13.3

Gravity: 4.33 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.53 AU - 0.65 AU

Year: 319 Days

Day: 8 Hours

Environment

Temp: -154 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 48,473,178 km

• M1: 167,699 km (0.069 R)
• M2: 254,915 km (0.104 R)
• M3: 339,288 km (0.109 R)
• M4: 423,960 km (0.101 R)
• M5: 525,238 km (0.035 R)
• M6: 627,114 km (0.073 R)
• M7: 733,628 km (0.11 R)
• M8: 817,253 km (0.102 R)
• M9: 943,663 km (0.075 R)
• M10: 1,032,076 km (0.085 R)
• M11: 1,301,950 km (0.103 R)
• M12: 1,406,370 km (0.105 R)
• M13: 1,490,294 km (0.073 R)
• M14: 1,580,801 km (0.093 R)
• M15: 1,697,786 km (0.035 R)
• M16: 1,787,695 km (0.116 R)
• M17: 1,879,248 km (0.108 R)
• M18: 2,040,665 km (0.118 R)
• M19: 2,185,326 km (0.091 R)
• M20: 2,289,147 km (0.066 R)
• M21: 2,372,323 km (0.109 R)
• M22: 2,456,547 km (0.092 R)
• M23: 2,582,059 km (0.093 R)
• M24: 2,727,319 km (0.05 R)
• M25: 2,821,865 km (0.118 R)
• M26: 2,947,527 km (0.116 R)
• M27: 3,111,935 km (0.05 R)
• M28: 3,223,236 km (0.116 R)
• M29: 3,329,600 km (0.084 R)
• M30: 3,456,309 km (0.076 R)
• M31: 3,558,933 km (0.043 R)
• M32: 3,682,052 km (0.115 R)
• M33: 3,919,464 km (0.119 R)
• M34: 4,033,308 km (0.098 R)
• M35: 4,209,534 km (0.088 R)
• M36: 4,298,695 km (0.112 R)
• M37: 4,416,279 km (0.071 R)
• M38: 4,782,494 km (0.102 R)
• M39: 4,925,959 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 560.7

Radius: 10.6

Gravity: 4.99 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.84 AU - 1.06 AU

Year: 651 Days

Day: 13.8 Hours

Environment

Temp: -174 °C

Axial Tilt: 24.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (54)

Outer Limit: 48,473,178 km

• M1: 138,976 km (0.089 R)
• M2: 244,443 km (0.065 R)
• M3: 320,887 km (0.093 R)
• M4: 420,520 km (0.075 R)
• M5: 587,770 km (0.063 R)
• M6: 731,085 km (0.101 R)
• M7: 897,138 km (0.106 R)
• M8: 974,630 km (0.097 R)
• M9: 1,049,130 km (0.081 R)
• M10: 1,164,619 km (0.073 R)
• M11: 1,238,521 km (0.099 R)
• M12: 1,314,068 km (0.073 R)
• M13: 1,451,548 km (0.118 R)
• M14: 1,525,449 km (0.051 R)
• M15: 1,676,843 km (0.084 R)
• M16: 1,754,484 km (0.081 R)
• M17: 1,846,786 km (0.058 R)
• M18: 1,967,810 km (0.084 R)
• M19: 2,077,615 km (0.103 R)
• M20: 2,175,452 km (0.106 R)
• M21: 2,282,116 km (0.09 R)
• M22: 2,405,085 km (0.114 R)
• M23: 2,537,778 km (0.095 R)
• M24: 2,864,799 km (0.051 R)
• M25: 2,950,668 km (0.119 R)
• M26: 3,045,214 km (0.12 R)
• M27: 3,343,662 km (0.12 R)
• M28: 3,459,002 km (0.115 R)
• M29: 3,668,439 km (0.09 R)
• M30: 3,736,207 km (0.062 R)
• M31: 3,864,711 km (0.088 R)
• M32: 4,047,071 km (0.116 R)
• M33: 4,134,885 km (0.106 R)
• M34: 4,205,645 km (0.106 R)
• M35: 4,276,854 km (0.069 R)
• M36: 4,510,974 km (0.108 R)
• M37: 4,758,559 km (0.064 R)
• M38: 4,935,383 km (0.115 R)
• M39: 5,200,172 km (0.118 R)
• M40: 5,295,914 km (0.119 R)
• M41: 5,372,808 km (0.117 R)
• M42: 5,440,575 km (0.107 R)
• M43: 5,508,493 km (0.053 R)
• M44: 5,684,569 km (0.101 R)
• M45: 5,952,200 km (0.106 R)
• M46: 6,022,212 km (0.098 R)
• M47: 6,122,742 km (0.115 R)
• M48: 6,356,264 km (0.034 R)
• M49: 6,427,921 km (0.043 R)
• M50: 6,551,340 km (0.098 R)
• M51: 6,675,506 km (0.119 R)
• M52: 6,748,360 km (0.07 R)
• M53: 6,863,401 km (0.116 R)
• M54: 7,095,427 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 987.7

Radius: 13.3

Gravity: 5.58 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 1.13 AU - 1.59 AU

Year: 1115 Days

Day: 12.8 Hours

Environment

Temp: -198 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (62)

Outer Limit: 48,473,178 km

• M1: 174,282 km (0.112 R)
• M2: 291,566 km (0.108 R)
• M3: 394,639 km (0.105 R)
• M4: 533,616 km (0.115 R)
• M5: 616,942 km (0.104 R)
• M6: 779,405 km (0.118 R)
• M7: 950,246 km (0.114 R)
• M8: 1,110,764 km (0.094 R)
• M9: 1,223,112 km (0.046 R)
• M10: 1,331,122 km (0.033 R)
• M11: 1,425,369 km (0.044 R)
• M12: 1,620,743 km (0.042 R)
• M13: 1,703,471 km (0.091 R)
• M14: 1,787,545 km (0.105 R)
• M15: 2,019,122 km (0.089 R)
• M16: 2,148,674 km (0.053 R)
• M17: 2,406,132 km (0.105 R)
• M18: 2,630,230 km (0.078 R)
• M19: 2,750,506 km (0.094 R)
• M20: 2,850,288 km (0.1 R)
• M21: 3,030,703 km (0.088 R)
• M22: 3,122,407 km (0.052 R)
• M23: 3,667,841 km (0.1 R)
• M24: 3,976,910 km (0.079 R)
• M25: 4,103,021 km (0.098 R)
• M26: 4,281,790 km (0.092 R)
• M27: 4,372,147 km (0.032 R)
• M28: 4,633,944 km (0.098 R)
• M29: 4,740,158 km (0.081 R)
• M30: 5,408,412 km (0.092 R)
• M31: 5,492,187 km (0.03 R)
• M32: 5,746,503 km (0.12 R)
• M33: 5,860,796 km (0.054 R)
• M34: 5,947,114 km (0.076 R)
• M35: 6,048,242 km (0.046 R)
• M36: 6,428,968 km (0.101 R)
• M37: 6,727,117 km (0.117 R)
• M38: 6,832,584 km (0.081 R)
• M39: 6,999,535 km (0.096 R)
• M40: 7,649,089 km (0.119 R)
• M41: 7,790,908 km (0.109 R)
• M42: 8,108,953 km (0.068 R)
• M43: 8,269,621 km (0.111 R)
• M44: 8,512,717 km (0.103 R)
• M45: 8,676,078 km (0.104 R)
• M46: 9,306,334 km (0.066 R)
• M47: 9,610,018 km (0.114 R)
• M48: 9,985,807 km (0.089 R)
• M49: 10,089,180 km (0.075 R)
• M50: 10,314,175 km (0.104 R)
• M51: 10,628,630 km (0.071 R)
• M52: 10,751,749 km (0.114 R)
• M53: 10,857,664 km (0.099 R)
• M54: 10,946,226 km (0.115 R)
• M55: 11,052,739 km (0.081 R)
• M56: 11,159,702 km (0.091 R)
• M57: 11,554,640 km (0.042 R)
• M58: 11,772,006 km (0.105 R)
• M59: 11,881,212 km (0.071 R)
• M60: 12,045,770 km (0.082 R)
• M61: 12,358,430 km (0.04 R)
• M62: 12,469,431 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 959.1

Radius: 8

Gravity: 14.99 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.48 AU - 2.16 AU

Year: 1726 Days

Day: 5 Hours

Environment

Temp: -203 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 48,473,178 km

• M1: 139,425 km (0.113 R)
• M2: 194,028 km (0.044 R)
• M3: 284,236 km (0.116 R)
• M4: 342,280 km (0.065 R)
• M5: 438,920 km (0.117 R)
• M6: 508,932 km (0.033 R)
• M7: 637,736 km (0.057 R)
• M8: 1,030,729 km (0.062 R)
• M9: 1,137,243 km (0.118 R)
• M10: 1,196,933 km (0.11 R)
• M11: 1,467,854 km (0.119 R)
• M12: 1,577,360 km (0.081 R)
• M13: 1,723,816 km (0.047 R)
• M14: 1,839,455 km (0.086 R)
• M15: 1,945,820 km (0.101 R)
• M16: 2,152,564 km (0.12 R)
• M17: 2,214,647 km (0.09 R)
• M18: 2,379,055 km (0.081 R)
• M19: 2,482,277 km (0.068 R)
• M20: 2,746,916 km (0.116 R)
• M21: 2,841,761 km (0.109 R)
• M22: 3,203,339 km (0.085 R)
• M23: 3,506,125 km (0.069 R)
• M24: 3,939,510 km (0.119 R)
• M25: 4,062,031 km (0.117 R)
• M26: 4,263,839 km (0.072 R)
• M27: 4,516,958 km (0.096 R)
• M28: 5,237,721 km (0.039 R)
• M29: 6,117,506 km (0.075 R)
• M30: 6,366,885 km (0.11 R)
• M31: 6,492,996 km (0.072 R)
• M32: 6,656,208 km (0.106 R)
• M33: 6,894,367 km (0.033 R)
• M34: 7,042,320 km (0.09 R)
• M35: 7,210,169 km (0.09 R)
• M36: 7,303,817 km (0.101 R)
• M37: 7,492,609 km (0.098 R)
• M38: 7,625,751 km (0.12 R)
• M39: 7,874,982 km (0.107 R)
• M40: 7,932,876 km (0.085 R)
• M41: 8,126,904 km (0.118 R)
• M42: 8,302,981 km (0.058 R)
• M43: 8,421,014 km (0.11 R)
• M44: 8,718,564 km (0.108 R)
• M45: 9,080,142 km (0.097 R)
• M46: 9,652,354 km (0.062 R)
• M47: 9,942,873 km (0.115 R)
• M48: 10,026,348 km (0.109 R)
• M49: 11,176,906 km (0.074 R)
• M50: 11,241,981 km (0.088 R)
• M51: 11,372,729 km (0.1 R)
• M52: 11,525,768 km (0.078 R)
• M53: 11,833,940 km (0.096 R)
• M54: 12,167,244 km (0.11 R)
• M55: 12,458,511 km (0.052 R)
• M56: 12,752,171 km (0.096 R)
• M57: 13,554,016 km (0.072 R)
• M58: 13,996,227 km (0.059 R)
• M59: 14,348,530 km (0.061 R)
• M60: 14,490,349 km (0.068 R)
• M61: 14,632,617 km (0.055 R)
• M62: 14,751,547 km (0.109 R)
• M63: 15,014,241 km (0.082 R)
• M64: 15,086,048 km (0.05 R)
• M65: 15,350,836 km (0.031 R)
• M66: 15,616,971 km (0.095 R)
• M67: 15,860,366 km (0.051 R)
• M68: 15,933,669 km (0.098 R)
• M69: 16,178,561 km (0.094 R)
• M70: 16,326,214 km (0.082 R)
• M71: 16,523,683 km (0.062 R)
• M72: 16,622,717 km (0.047 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 267.7

Radius: 6.7

Gravity: 5.96 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 5.53 AU - 6.51 AU

Year: 10383 Days

Day: 15.7 Hours

Environment

Temp: -237 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 48,473,178 km

• M1: 99,931 km (0.076 R)
• M2: 177,273 km (0.086 R)
• M3: 242,349 km (0.082 R)
• M4: 298,298 km (0.109 R)
• M5: 925,113 km (0.046 R)
• M6: 1,251,087 km (0.119 R)
• M7: 1,941,182 km (0.075 R)
• M8: 2,103,795 km (0.082 R)
• M9: 2,228,709 km (0.056 R)
• M10: 2,270,896 km (0.119 R)
• M11: 2,356,166 km (0.119 R)
• M12: 2,486,017 km (0.111 R)
• M13: 2,707,721 km (0.097 R)
• M14: 3,337,977 km (0.081 R)
• M15: 3,607,403 km (0.076 R)
• M16: 4,219,558 km (0.108 R)
• M17: 4,510,825 km (0.084 R)
• M18: 5,112,806 km (0.079 R)
• M19: 5,595,260 km (0.028 R)
• M20: 5,768,943 km (0.096 R)
• M21: 5,827,286 km (0.047 R)
• M22: 6,121,844 km (0.089 R)
• M23: 6,330,832 km (0.103 R)
• M24: 6,511,995 km (0.115 R)
• M25: 6,572,732 km (0.102 R)
• M26: 6,972,158 km (0.064 R)
• M27: 7,923,750 km (0.065 R)
• M28: 8,613,845 km (0.118 R)
• M29: 9,016,862 km (0.06 R)
• M30: 9,118,589 km (0.056 R)
• M31: 10,051,032 km (0.101 R)
• M32: 10,191,654 km (0.087 R)
• M33: 10,617,858 km (0.092 R)
• M34: 10,797,077 km (0.112 R)
• M35: 10,977,342 km (0.054 R)
• M36: 11,267,861 km (0.115 R)
• M37: 11,597,725 km (0.109 R)
• M38: 13,063,335 km (0.078 R)
• M39: 14,506,954 km (0.034 R)
• M40: 15,026,059 km (0.052 R)
• M41: 15,795,740 km (0.118 R)
• M42: 15,959,400 km (0.061 R)
• M43: 16,041,529 km (0.114 R)
• M44: 16,123,659 km (0.073 R)
• M45: 16,869,703 km (0.095 R)
• M46: 17,162,765 km (0.108 R)
• M47: 17,839,097 km (0.114 R)
• M48: 18,009,639 km (0.099 R)
• M49: 18,309,283 km (0.085 R)
• M50: 18,567,340 km (0.05 R)
• M51: 19,655,814 km (0.093 R)
• M52: 20,318,682 km (0.116 R)
• M53: 20,854,242 km (0.109 R)
• M54: 21,394,590 km (0.095 R)
• M55: 22,488,898 km (0.106 R)
• M56: 23,554,634 km (0.09 R)
• M57: 25,783,043 km (0.09 R)
• M58: 26,946,765 km (0.053 R)
• M59: 28,624,356 km (0.095 R)
• M60: 28,873,885 km (0.106 R)
• M61: 29,778,354 km (0.059 R)
• M62: 30,793,974 km (0.057 R)
• M63: 31,152,261 km (0.086 R)
• M64: 31,203,423 km (0.102 R)
• M65: 32,390,781 km (0.104 R)
• M66: 32,650,782 km (0.099 R)
• M67: 32,911,532 km (0.095 R)
• M68: 33,120,669 km (0.093 R)
• M69: 33,592,800 km (0.037 R)
• M70: 34,702,966 km (0.038 R)
• M71: 34,756,073 km (0.113 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 289.7

Radius: 6.8

Gravity: 6.27 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 7.87 AU - 7.95 AU

Year: 15638 Days

Day: 24.9 Hours

Environment

Temp: -228 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 48,473,178 km

• M1: 101,727 km (0.062 R)
• M2: 182,509 km (0.03 R)
• M3: 546,481 km (0.079 R)
• M4: 905,067 km (0.03 R)
• M5: 980,764 km (0.03 R)
• M6: 1,220,719 km (0.049 R)
• M7: 1,304,942 km (0.085 R)
• M8: 1,996,384 km (0.075 R)
• M9: 2,045,900 km (0.082 R)
• M10: 2,811,842 km (0.096 R)
• M11: 2,895,616 km (0.06 R)
• M12: 3,506,275 km (0.107 R)
• M13: 3,749,072 km (0.107 R)
• M14: 3,872,640 km (0.059 R)
• M15: 4,510,376 km (0.09 R)
• M16: 4,741,205 km (0.105 R)
• M17: 4,942,115 km (0.092 R)
• M18: 5,009,883 km (0.054 R)
• M19: 6,499,728 km (0.115 R)
• M20: 6,798,026 km (0.099 R)
• M21: 7,253,851 km (0.04 R)
• M22: 7,916,719 km (0.105 R)
• M23: 8,115,236 km (0.077 R)
• M24: 8,639,277 km (0.083 R)
• M25: 9,424,965 km (0.075 R)
• M26: 10,667,375 km (0.079 R)
• M27: 10,930,967 km (0.108 R)
• M28: 11,688,979 km (0.086 R)
• M29: 12,188,636 km (0.077 R)
• M30: 13,161,621 km (0.097 R)
• M31: 13,302,542 km (0.091 R)
• M32: 13,728,746 km (0.103 R)
• M33: 14,159,289 km (0.109 R)
• M34: 14,497,230 km (0.098 R)
• M35: 14,642,939 km (0.063 R)
• M36: 15,082,906 km (0.082 R)
• M37: 15,428,028 km (0.079 R)
• M38: 16,126,052 km (0.034 R)
• M39: 16,226,731 km (0.072 R)
• M40: 16,936,573 km (0.087 R)
• M41: 17,501,455 km (0.047 R)
• M42: 17,760,110 km (0.065 R)
• M43: 18,386,476 km (0.115 R)
• M44: 19,714,307 km (0.103 R)
• M45: 19,768,012 km (0.091 R)
• M46: 19,875,723 km (0.106 R)
• M47: 20,525,725 km (0.106 R)
• M48: 20,689,386 km (0.112 R)
• M49: 21,348,065 km (0.057 R)
• M50: 22,911,811 km (0.109 R)
• M51: 23,365,243 km (0.05 R)
• M52: 25,559,544 km (0.094 R)
• M53: 27,098,457 km (0.089 R)
• M54: 27,397,803 km (0.111 R)
• M55: 28,060,372 km (0.093 R)
• M56: 28,120,809 km (0.032 R)
• M57: 28,545,518 km (0.12 R)
• M58: 29,339,733 km (0.117 R)
• M59: 30,265,145 km (0.119 R)
• M60: 30,700,325 km (0.069 R)
• M61: 31,639,650 km (0.08 R)
• M62: 32,018,133 km (0.049 R)
• M63: 32,144,543 km (0.091 R)
• M64: 33,162,258 km (0.107 R)
• M65: 34,449,248 km (0.085 R)
• M66: 34,514,024 km (0.117 R)
• M67: 35,555,973 km (0.055 R)
• M68: 37,071,848 km (0.111 R)
• M69: 37,804,280 km (0.108 R)
• M70: 38,004,890 km (0.064 R)
• M71: 38,138,780 km (0.036 R)
• M72: 38,339,989 km (0.073 R)
• M73: 38,608,667 km (0.104 R)
• M74: 38,743,305 km (0.031 R)
• M75: 39,148,117 km (0.069 R)
• M76: 39,215,735 km (0.111 R)
• M77: 39,283,354 km (0.066 R)
• M78: 39,554,275 km (0.113 R)
• M79: 40,712,761 km (0.092 R)
• M80: 41,330,601 km (0.055 R)
• M81: 41,675,274 km (0.094 R)
• M82: 43,482,416 km (0.052 R)
• M83: 43,692,452 km (0.06 R)
• M84: 44,184,180 km (0.066 R)
• M85: 45,031,353 km (0.088 R)
• M86: 45,173,022 km (0.1 R)
• M87: 45,456,959 km (0.116 R)
• M88: 45,528,018 km (0.088 R)
• M89: 46,169,194 km (0.101 R)
• M90: 47,893,609 km (0.042 R)
• M91: 48,038,270 km (0.097 R)
• M92: 48,328,041 km (0.076 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 265 - 13,572 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit