🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 609.3

Radius: 14.9

Gravity: 2.74 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.83 AU - 0.97 AU

Year: 560 Days

Day: 8.1 Hours

Environment

Temp: -161 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 17,466,961 km

• M1: 190,887 km (0.102 R)
• M2: 284,236 km (0.065 R)
• M3: 380,577 km (0.029 R)
• M4: 482,304 km (0.104 R)
• M5: 625,170 km (0.075 R)
• M6: 741,706 km (0.109 R)
• M7: 835,055 km (0.057 R)
• M8: 947,254 km (0.101 R)
• M9: 1,055,413 km (0.109 R)
• M10: 1,329,027 km (0.103 R)
• M11: 1,503,758 km (0.084 R)
• M12: 1,596,957 km (0.12 R)
• M13: 1,728,753 km (0.089 R)
• M14: 1,889,421 km (0.085 R)
• M15: 2,081,206 km (0.062 R)
• M16: 2,206,269 km (0.09 R)
• M17: 2,653,417 km (0.093 R)
• M18: 2,847,745 km (0.107 R)
• M19: 2,965,179 km (0.12 R)
• M20: 3,061,820 km (0.092 R)
• M21: 3,227,873 km (0.081 R)
• M22: 3,358,323 km (0.077 R)
• M23: 3,529,762 km (0.111 R)
• M24: 3,632,535 km (0.09 R)
• M25: 3,963,296 km (0.032 R)
• M26: 4,103,320 km (0.081 R)
• M27: 4,320,835 km (0.049 R)
• M28: 4,465,197 km (0.071 R)
• M29: 4,559,444 km (0.113 R)
• M30: 4,662,966 km (0.105 R)
• M31: 4,819,894 km (0.113 R)
• M32: 4,916,684 km (0.099 R)
• M33: 5,103,232 km (0.082 R)
• M34: 5,292,174 km (0.053 R)
• M35: 5,410,357 km (0.053 R)
• M36: 5,511,036 km (0.113 R)
• M37: 5,621,589 km (0.079 R)
• M38: 5,891,912 km (0.111 R)
• M39: 5,995,583 km (0.112 R)
• M40: 6,166,574 km (0.115 R)
• M41: 6,291,039 km (0.094 R)
• M42: 6,464,872 km (0.115 R)
• M43: 6,601,156 km (0.091 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 695.3

Radius: 10.8

Gravity: 5.96 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 1.25 AU - 1.57 AU

Year: 1098 Days

Day: 10.7 Hours

Environment

Temp: -178 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (60)

Outer Limit: 17,466,961 km

• M1: 138,228 km (0.103 R)
• M2: 228,286 km (0.076 R)
• M3: 302,786 km (0.107 R)
• M4: 385,963 km (0.106 R)
• M5: 464,053 km (0.076 R)
• M6: 532,419 km (0.113 R)
• M7: 622,477 km (0.045 R)
• M8: 865,723 km (0.119 R)
• M9: 981,661 km (0.092 R)
• M10: 1,291,329 km (0.105 R)
• M11: 1,425,518 km (0.104 R)
• M12: 1,523,206 km (0.038 R)
• M13: 1,648,419 km (0.078 R)
• M14: 1,733,989 km (0.112 R)
• M15: 1,812,378 km (0.056 R)
• M16: 1,936,544 km (0.078 R)
• M17: 2,119,203 km (0.115 R)
• M18: 2,231,551 km (0.093 R)
• M19: 2,345,844 km (0.028 R)
• M20: 2,452,507 km (0.076 R)
• M21: 2,640,552 km (0.039 R)
• M22: 2,782,221 km (0.098 R)
• M23: 2,968,022 km (0.103 R)
• M24: 3,104,904 km (0.048 R)
• M25: 3,190,175 km (0.107 R)
• M26: 3,319,577 km (0.032 R)
• M27: 3,406,942 km (0.111 R)
• M28: 3,483,835 km (0.071 R)
• M29: 3,650,936 km (0.095 R)
• M30: 3,854,838 km (0.116 R)
• M31: 3,958,210 km (0.066 R)
• M32: 4,309,615 km (0.118 R)
• M33: 4,501,250 km (0.083 R)
• M34: 4,585,923 km (0.08 R)
• M35: 4,756,913 km (0.089 R)
• M36: 4,992,530 km (0.094 R)
• M37: 5,118,042 km (0.078 R)
• M38: 5,308,331 km (0.119 R)
• M39: 5,488,147 km (0.113 R)
• M40: 5,656,744 km (0.05 R)
• M41: 6,133,064 km (0.095 R)
• M42: 6,430,464 km (0.095 R)
• M43: 6,594,723 km (0.05 R)
• M44: 6,746,415 km (0.077 R)
• M45: 6,815,829 km (0.084 R)
• M46: 6,997,440 km (0.098 R)
• M47: 7,365,302 km (0.06 R)
• M48: 7,885,005 km (0.115 R)
• M49: 8,702,108 km (0.072 R)
• M50: 8,792,914 km (0.027 R)
• M51: 8,914,388 km (0.111 R)
• M52: 9,051,718 km (0.111 R)
• M53: 9,328,624 km (0.119 R)
• M54: 9,592,814 km (0.053 R)
• M55: 9,875,105 km (0.079 R)
• M56: 10,048,938 km (0.107 R)
• M57: 10,207,960 km (0.091 R)
• M58: 10,303,703 km (0.051 R)
• M59: 10,933,660 km (0.078 R)
• M60: 11,048,102 km (0.038 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 842.2

Radius: 9.8

Gravity: 8.77 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 1.37 AU - 1.93 AU

Year: 1390 Days

Day: 8.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 17,466,961 km

• M1: 133,591 km (0.083 R)
• M2: 243,695 km (0.043 R)
• M3: 369,507 km (0.118 R)
• M4: 496,815 km (0.07 R)
• M5: 626,965 km (0.115 R)
• M6: 822,190 km (0.064 R)
• M7: 971,638 km (0.096 R)
• M8: 1,244,205 km (0.111 R)
• M9: 1,464,713 km (0.102 R)
• M10: 1,550,732 km (0.1 R)
• M11: 1,628,522 km (0.104 R)
• M12: 1,839,605 km (0.064 R)
• M13: 1,932,804 km (0.111 R)
• M14: 1,995,785 km (0.047 R)
• M15: 2,102,448 km (0.036 R)
• M16: 2,422,738 km (0.108 R)
• M17: 2,548,400 km (0.105 R)
• M18: 2,617,813 km (0.088 R)
• M19: 2,723,130 km (0.053 R)
• M20: 2,841,911 km (0.114 R)
• M21: 2,926,134 km (0.109 R)
• M22: 3,060,024 km (0.101 R)
• M23: 3,435,964 km (0.076 R)
• M24: 3,500,141 km (0.105 R)
• M25: 3,564,618 km (0.088 R)
• M26: 3,906,449 km (0.052 R)
• M27: 4,013,860 km (0.097 R)
• M28: 4,163,159 km (0.104 R)
• M29: 4,495,117 km (0.097 R)
• M30: 4,650,250 km (0.109 R)
• M31: 4,821,539 km (0.095 R)
• M32: 4,980,263 km (0.048 R)
• M33: 5,347,675 km (0.104 R)
• M34: 5,452,244 km (0.08 R)
• M35: 5,572,371 km (0.096 R)
• M36: 5,708,804 km (0.054 R)
• M37: 5,784,950 km (0.101 R)
• M38: 6,046,596 km (0.118 R)
• M39: 6,359,555 km (0.058 R)
• M40: 6,565,851 km (0.103 R)
• M41: 6,661,743 km (0.09 R)
• M42: 6,774,240 km (0.089 R)
• M43: 6,903,643 km (0.066 R)
• M44: 7,017,487 km (0.049 R)
• M45: 7,815,292 km (0.099 R)
• M46: 8,002,140 km (0.067 R)
• M47: 8,121,818 km (0.11 R)
• M48: 8,415,030 km (0.116 R)
• M49: 8,624,018 km (0.109 R)
• M50: 8,834,951 km (0.094 R)
• M51: 9,261,604 km (0.093 R)
• M52: 9,387,266 km (0.056 R)
• M53: 9,567,981 km (0.108 R)
• M54: 9,676,888 km (0.107 R)
• M55: 9,749,742 km (0.111 R)
• M56: 10,153,656 km (0.074 R)
• M57: 10,227,707 km (0.105 R)
• M58: 10,694,453 km (0.101 R)
• M59: 10,958,942 km (0.068 R)
• M60: 11,034,937 km (0.108 R)
• M61: 11,321,268 km (0.093 R)
• M62: 11,475,054 km (0.088 R)
• M63: 11,590,843 km (0.079 R)
• M64: 11,784,722 km (0.065 R)
• M65: 11,862,513 km (0.118 R)
• M66: 12,274,056 km (0.084 R)
• M67: 12,491,422 km (0.061 R)
• M68: 12,610,502 km (0.103 R)
• M69: 12,829,962 km (0.08 R)
• M70: 13,191,690 km (0.088 R)
• M71: 13,394,096 km (0.119 R)
• M72: 13,495,673 km (0.055 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 729.1

Radius: 13.2

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 1.73 AU - 1.99 AU

Year: 1664 Days

Day: 9.9 Hours

Environment

Temp: -180 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (64)

Outer Limit: 17,466,961 km

• M1: 199,564 km (0.119 R)
• M2: 435,330 km (0.079 R)
• M3: 620,233 km (0.049 R)
• M4: 727,794 km (0.068 R)
• M5: 866,321 km (0.072 R)
• M6: 1,092,513 km (0.048 R)
• M7: 1,199,476 km (0.092 R)
• M8: 1,291,628 km (0.074 R)
• M9: 1,376,749 km (0.045 R)
• M10: 1,523,206 km (0.12 R)
• M11: 1,644,230 km (0.06 R)
• M12: 1,885,681 km (0.095 R)
• M13: 1,983,518 km (0.112 R)
• M14: 2,252,794 km (0.107 R)
• M15: 2,380,252 km (0.108 R)
• M16: 2,558,124 km (0.095 R)
• M17: 2,679,148 km (0.107 R)
• M18: 2,839,517 km (0.049 R)
• M19: 3,003,177 km (0.075 R)
• M20: 3,182,994 km (0.089 R)
• M21: 3,486,378 km (0.063 R)
• M22: 3,648,393 km (0.111 R)
• M23: 3,757,899 km (0.099 R)
• M24: 4,221,054 km (0.056 R)
• M25: 4,321,733 km (0.065 R)
• M26: 4,747,339 km (0.11 R)
• M27: 5,033,520 km (0.059 R)
• M28: 5,201,817 km (0.116 R)
• M29: 5,340,943 km (0.077 R)
• M30: 5,591,520 km (0.065 R)
• M31: 5,942,177 km (0.045 R)
• M32: 6,039,116 km (0.111 R)
• M33: 6,169,267 km (0.101 R)
• M34: 6,382,593 km (0.114 R)
• M35: 6,481,926 km (0.062 R)
• M36: 6,715,748 km (0.11 R)
• M37: 6,799,822 km (0.069 R)
• M38: 6,935,357 km (0.105 R)
• M39: 7,037,383 km (0.119 R)
• M40: 7,226,026 km (0.104 R)
• M41: 7,819,780 km (0.081 R)
• M42: 8,320,484 km (0.1 R)
• M43: 8,850,060 km (0.114 R)
• M44: 9,053,813 km (0.06 R)
• M45: 9,203,111 km (0.065 R)
• M46: 9,353,158 km (0.067 R)
• M47: 9,503,953 km (0.088 R)
• M48: 9,617,647 km (0.101 R)
• M49: 9,788,937 km (0.092 R)
• M50: 10,250,895 km (0.052 R)
• M51: 10,367,581 km (0.073 R)
• M52: 10,798,872 km (0.1 R)
• M53: 11,076,526 km (0.063 R)
• M54: 11,537,736 km (0.057 R)
• M55: 11,659,060 km (0.115 R)
• M56: 11,801,178 km (0.11 R)
• M57: 12,046,069 km (0.066 R)
• M58: 12,854,047 km (0.106 R)
• M59: 13,169,400 km (0.06 R)
• M60: 13,423,567 km (0.091 R)
• M61: 13,615,201 km (0.119 R)
• M62: 14,087,631 km (0.102 R)
• M63: 14,304,249 km (0.112 R)
• M64: 14,456,390 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 450.9

Radius: 10.8

Gravity: 3.87 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 1.83 AU - 2.01 AU

Year: 1745 Days

Day: 5.5 Hours

Environment

Temp: -182 °C

Axial Tilt: 130.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (63)

Outer Limit: 17,466,961 km

• M1: 145,260 km (0.054 R)
• M2: 226,042 km (0.055 R)
• M3: 318,943 km (0.064 R)
• M4: 409,599 km (0.06 R)
• M5: 488,138 km (0.112 R)
• M6: 663,317 km (0.084 R)
• M7: 936,034 km (0.085 R)
• M8: 1,061,696 km (0.118 R)
• M9: 1,184,815 km (0.085 R)
• M10: 1,602,492 km (0.064 R)
• M11: 1,716,336 km (0.056 R)
• M12: 1,912,310 km (0.032 R)
• M13: 2,023,311 km (0.102 R)
• M14: 2,105,440 km (0.073 R)
• M15: 2,199,238 km (0.111 R)
• M16: 2,326,546 km (0.049 R)
• M17: 2,401,943 km (0.093 R)
• M18: 2,622,002 km (0.118 R)
• M19: 2,976,250 km (0.105 R)
• M20: 3,321,522 km (0.079 R)
• M21: 3,394,675 km (0.056 R)
• M22: 3,542,478 km (0.119 R)
• M23: 3,629,693 km (0.055 R)
• M24: 3,895,678 km (0.076 R)
• M25: 4,076,692 km (0.117 R)
• M26: 4,168,096 km (0.107 R)
• M27: 4,300,191 km (0.032 R)
• M28: 4,663,414 km (0.064 R)
• M29: 4,952,886 km (0.092 R)
• M30: 5,163,221 km (0.1 R)
• M31: 5,234,130 km (0.067 R)
• M32: 5,333,762 km (0.089 R)
• M33: 5,462,865 km (0.045 R)
• M34: 5,563,994 km (0.114 R)
• M35: 5,900,738 km (0.055 R)
• M36: 6,019,370 km (0.087 R)
• M37: 6,213,996 km (0.08 R)
• M38: 6,548,048 km (0.063 R)
• M39: 6,872,377 km (0.095 R)
• M40: 6,950,467 km (0.073 R)
• M41: 7,091,537 km (0.073 R)
• M42: 7,328,949 km (0.11 R)
• M43: 7,698,157 km (0.102 R)
• M44: 7,909,539 km (0.069 R)
• M45: 8,024,131 km (0.066 R)
• M46: 8,139,321 km (0.1 R)
• M47: 8,555,203 km (0.094 R)
• M48: 8,689,841 km (0.077 R)
• M49: 9,269,533 km (0.089 R)
• M50: 9,459,821 km (0.071 R)
• M51: 9,564,091 km (0.095 R)
• M52: 9,808,983 km (0.092 R)
• M53: 10,038,316 km (0.06 R)
• M54: 10,215,889 km (0.106 R)
• M55: 10,340,803 km (0.06 R)
• M56: 11,119,460 km (0.062 R)
• M57: 11,192,913 km (0.109 R)
• M58: 11,284,915 km (0.113 R)
• M59: 11,580,970 km (0.119 R)
• M60: 11,767,219 km (0.041 R)
• M61: 12,048,613 km (0.088 R)
• M62: 12,522,539 km (0.064 R)
• M63: 12,713,725 km (0.084 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 431.9

Radius: 13.2

Gravity: 2.48 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1.91 AU - 2.31 AU

Year: 2011 Days

Day: 7.6 Hours

Environment

Temp: -192 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (60)

Outer Limit: 17,466,961 km

• M1: 169,046 km (0.086 R)
• M2: 259,403 km (0.105 R)
• M3: 363,972 km (0.116 R)
• M4: 503,546 km (0.096 R)
• M5: 631,752 km (0.088 R)
• M6: 750,981 km (0.051 R)
• M7: 848,070 km (0.065 R)
• M8: 1,176,138 km (0.094 R)
• M9: 1,318,855 km (0.094 R)
• M10: 1,401,882 km (0.104 R)
• M11: 1,593,068 km (0.1 R)
• M12: 1,722,171 km (0.118 R)
• M13: 1,865,336 km (0.085 R)
• M14: 2,044,704 km (0.088 R)
• M15: 2,185,774 km (0.113 R)
• M16: 2,364,095 km (0.04 R)
• M17: 2,547,353 km (0.106 R)
• M18: 2,855,375 km (0.105 R)
• M19: 3,533,801 km (0.1 R)
• M20: 3,731,120 km (0.093 R)
• M21: 3,972,721 km (0.119 R)
• M22: 4,288,971 km (0.063 R)
• M23: 4,513,966 km (0.109 R)
• M24: 4,599,387 km (0.091 R)
• M25: 5,005,096 km (0.091 R)
• M26: 5,108,318 km (0.025 R)
• M27: 5,257,019 km (0.061 R)
• M28: 5,543,798 km (0.077 R)
• M29: 5,635,352 km (0.086 R)
• M30: 5,866,630 km (0.041 R)
• M31: 6,402,490 km (0.109 R)
• M32: 6,757,635 km (0.084 R)
• M33: 7,352,885 km (0.09 R)
• M34: 7,724,935 km (0.11 R)
• M35: 7,999,447 km (0.081 R)
• M36: 8,120,621 km (0.117 R)
• M37: 8,487,585 km (0.064 R)
• M38: 8,842,281 km (0.08 R)
• M39: 9,292,571 km (0.092 R)
• M40: 9,401,777 km (0.101 R)
• M41: 9,547,934 km (0.101 R)
• M42: 9,713,390 km (0.12 R)
• M43: 9,842,642 km (0.119 R)
• M44: 9,935,393 km (0.042 R)
• M45: 10,028,443 km (0.104 R)
• M46: 10,140,492 km (0.083 R)
• M47: 10,726,018 km (0.077 R)
• M48: 11,090,289 km (0.109 R)
• M49: 11,186,779 km (0.101 R)
• M50: 11,380,808 km (0.025 R)
• M51: 11,517,091 km (0.078 R)
• M52: 11,870,441 km (0.106 R)
• M53: 12,187,589 km (0.099 R)
• M54: 12,387,152 km (0.11 R)
• M55: 12,749,179 km (0.108 R)
• M56: 13,380,931 km (0.056 R)
• M57: 13,524,994 km (0.096 R)
• M58: 13,607,572 km (0.068 R)
• M59: 13,773,177 km (0.062 R)
• M60: 14,023,005 km (0.085 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 578.6

Radius: 11.3

Gravity: 4.53 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 2.14 AU - 2.6 AU

Year: 2393 Days

Day: 11.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (63)

Outer Limit: 17,466,961 km

• M1: 144,960 km (0.095 R)
• M2: 311,463 km (0.116 R)
• M3: 532,568 km (0.095 R)
• M4: 738,415 km (0.1 R)
• M5: 943,364 km (0.088 R)
• M6: 1,117,047 km (0.09 R)
• M7: 1,208,152 km (0.097 R)
• M8: 1,365,679 km (0.072 R)
• M9: 1,508,096 km (0.097 R)
• M10: 1,609,673 km (0.092 R)
• M11: 2,139,549 km (0.116 R)
• M12: 2,397,904 km (0.056 R)
• M13: 2,749,010 km (0.055 R)
• M14: 2,874,373 km (0.046 R)
• M15: 3,016,043 km (0.034 R)
• M16: 3,145,594 km (0.109 R)
• M17: 3,621,166 km (0.112 R)
• M18: 3,758,946 km (0.083 R)
• M19: 4,071,755 km (0.098 R)
• M20: 4,425,554 km (0.118 R)
• M21: 5,741,267 km (0.113 R)
• M22: 5,812,775 km (0.112 R)
• M23: 6,358,508 km (0.055 R)
• M24: 6,863,700 km (0.058 R)
• M25: 7,035,139 km (0.113 R)
• M26: 7,440,400 km (0.083 R)
• M27: 7,695,165 km (0.116 R)
• M28: 7,813,646 km (0.086 R)
• M29: 8,334,397 km (0.092 R)
• M30: 8,497,009 km (0.051 R)
• M31: 8,599,035 km (0.093 R)
• M32: 8,681,015 km (0.119 R)
• M33: 8,825,227 km (0.119 R)
• M34: 8,907,955 km (0.094 R)
• M35: 8,990,832 km (0.084 R)
• M36: 9,325,333 km (0.117 R)
• M37: 9,409,556 km (0.043 R)
• M38: 9,985,059 km (0.114 R)
• M39: 10,092,920 km (0.088 R)
• M40: 10,375,061 km (0.109 R)
• M41: 10,528,100 km (0.107 R)
• M42: 11,282,073 km (0.044 R)
• M43: 11,371,832 km (0.101 R)
• M44: 11,552,247 km (0.111 R)
• M45: 12,352,745 km (0.117 R)
• M46: 12,912,091 km (0.098 R)
• M47: 13,408,308 km (0.04 R)
• M48: 14,395,055 km (0.119 R)
• M49: 14,565,746 km (0.07 R)
• M50: 14,737,335 km (0.076 R)
• M51: 15,057,474 km (0.088 R)
• M52: 15,330,341 km (0.075 R)
• M53: 15,654,819 km (0.117 R)
• M54: 15,981,690 km (0.099 R)
• M55: 16,107,951 km (0.116 R)
• M56: 16,310,656 km (0.111 R)
• M57: 16,386,951 km (0.066 R)
• M58: 16,514,259 km (0.059 R)
• M59: 16,693,178 km (0.119 R)
• M60: 16,872,695 km (0.064 R)
• M61: 17,027,080 km (0.114 R)
• M62: 17,311,316 km (0.108 R)
• M63: 17,389,107 km (0.118 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 195 - 19,030 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit