🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.85

Radius: 0.94

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 0.47 AU - 0.55 AU

Year: 239 Days

Day: 19.9 Hours

Environment

Temp: -126 °C

Axial Tilt: 3.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 45,100,194 km

• M1: 154,983 km (0.094 R)

Planet 2 - Gas Giant

Semi-Major Axis: 2.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 720.8

Radius: 8.8

Gravity: 9.31 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 2.34 AU - 3.58 AU

Year: 3341 Days

Day: 5.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 45,100,194 km

• M1: 111,600 km (0.087 R)
• M2: 170,691 km (0.06 R)
• M3: 332,406 km (0.045 R)
• M4: 532,868 km (0.099 R)
• M5: 598,990 km (0.1 R)
• M6: 688,449 km (0.101 R)
• M7: 782,846 km (0.074 R)
• M8: 915,689 km (0.101 R)
• M9: 1,044,492 km (0.117 R)
• M10: 1,179,430 km (0.081 R)
• M11: 1,242,710 km (0.085 R)
• M12: 1,426,266 km (0.104 R)
• M13: 1,604,736 km (0.103 R)
• M14: 1,703,920 km (0.086 R)
• M15: 1,849,179 km (0.119 R)
• M16: 1,908,570 km (0.104 R)
• M17: 2,075,072 km (0.119 R)
• M18: 2,406,132 km (0.073 R)
• M19: 2,503,969 km (0.064 R)
• M20: 2,788,056 km (0.105 R)
• M21: 2,942,740 km (0.099 R)
• M22: 3,064,961 km (0.084 R)
• M23: 3,442,097 km (0.076 R)
• M24: 3,682,950 km (0.108 R)
• M25: 4,578,892 km (0.092 R)
• M26: 4,967,996 km (0.092 R)
• M27: 5,240,413 km (0.079 R)
• M28: 5,410,506 km (0.075 R)
• M29: 5,603,936 km (0.113 R)
• M30: 5,931,556 km (0.12 R)
• M31: 6,020,118 km (0.078 R)
• M32: 6,766,312 km (0.072 R)
• M33: 6,905,288 km (0.108 R)
• M34: 7,517,742 km (0.117 R)
• M35: 7,613,634 km (0.033 R)
• M36: 7,709,825 km (0.101 R)
• M37: 7,927,790 km (0.075 R)
• M38: 8,123,164 km (0.109 R)
• M39: 8,295,501 km (0.059 R)
• M40: 8,643,915 km (0.109 R)
• M41: 8,920,970 km (0.099 R)
• M42: 9,073,260 km (0.063 R)
• M43: 9,717,429 km (0.08 R)
• M44: 10,084,542 km (0.114 R)
• M45: 10,859,609 km (0.097 R)
• M46: 11,158,505 km (0.054 R)
• M47: 11,295,387 km (0.099 R)
• M48: 11,350,140 km (0.1 R)
• M49: 11,625,999 km (0.111 R)
• M50: 12,015,701 km (0.118 R)
• M51: 12,296,646 km (0.083 R)
• M52: 12,807,971 km (0.042 R)
• M53: 14,205,215 km (0.119 R)
• M54: 14,711,604 km (0.116 R)
• M55: 15,345,450 km (0.07 R)
• M56: 15,436,705 km (0.12 R)
• M57: 15,619,813 km (0.112 R)
• M58: 15,834,187 km (0.105 R)
• M59: 16,142,358 km (0.119 R)
• M60: 16,266,225 km (0.119 R)
• M61: 16,359,275 km (0.101 R)
• M62: 17,521,501 km (0.054 R)
• M63: 18,000,364 km (0.097 R)
• M64: 19,363,649 km (0.025 R)
• M65: 19,462,384 km (0.089 R)
• M66: 20,090,994 km (0.102 R)
• M67: 20,190,925 km (0.119 R)
• M68: 20,525,127 km (0.054 R)
• M69: 20,659,167 km (0.081 R)
• M70: 21,029,721 km (0.071 R)
• M71: 21,131,148 km (0.048 R)
• M72: 21,334,452 km (0.112 R)
• M73: 21,470,286 km (0.059 R)
• M74: 22,051,175 km (0.084 R)
• M75: 22,257,470 km (0.08 R)
• M76: 22,326,285 km (0.08 R)
• M77: 22,845,240 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 4.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 417.6

Radius: 11

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 4.24 AU - 4.8 AU

Year: 6304 Days

Day: 14.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 45,100,194 km

• M1: 144,362 km (0.072 R)
• M2: 268,827 km (0.084 R)
• M3: 449,542 km (0.102 R)
• M4: 772,374 km (0.074 R)
• M5: 873,951 km (0.108 R)
• M6: 1,035,367 km (0.115 R)
• M7: 1,120,039 km (0.062 R)
• M8: 1,357,900 km (0.075 R)
• M9: 1,882,091 km (0.082 R)
• M10: 2,058,317 km (0.085 R)
• M11: 2,370,528 km (0.058 R)
• M12: 3,185,238 km (0.112 R)
• M13: 3,290,256 km (0.101 R)
• M14: 3,417,713 km (0.115 R)
• M15: 3,877,278 km (0.108 R)
• M16: 4,080,132 km (0.087 R)
• M17: 4,286,727 km (0.076 R)
• M18: 4,379,627 km (0.096 R)
• M19: 4,473,126 km (0.107 R)
• M20: 4,734,025 km (0.108 R)
• M21: 5,097,847 km (0.063 R)
• M22: 5,295,615 km (0.101 R)
• M23: 5,698,781 km (0.091 R)
• M24: 6,085,791 km (0.048 R)
• M25: 6,190,509 km (0.101 R)
• M26: 6,804,010 km (0.085 R)
• M27: 6,912,768 km (0.105 R)
• M28: 7,076,877 km (0.08 R)
• M29: 7,242,332 km (0.114 R)
• M30: 7,718,203 km (0.041 R)
• M31: 7,831,598 km (0.108 R)
• M32: 8,088,906 km (0.06 R)
• M33: 8,175,224 km (0.089 R)
• M34: 8,290,864 km (0.076 R)
• M35: 8,729,485 km (0.097 R)
• M36: 8,996,367 km (0.028 R)
• M37: 9,115,746 km (0.091 R)
• M38: 9,205,655 km (0.053 R)
• M39: 9,296,012 km (0.11 R)
• M40: 9,568,429 km (0.04 R)
• M41: 10,028,443 km (0.093 R)
• M42: 10,121,343 km (0.103 R)
• M43: 10,245,659 km (0.095 R)
• M44: 10,401,690 km (0.108 R)
• M45: 10,527,202 km (0.108 R)
• M46: 10,653,164 km (0.054 R)
• M47: 11,129,932 km (0.067 R)
• M48: 11,516,343 km (0.087 R)
• M49: 11,711,269 km (0.1 R)
• M50: 12,038,440 km (0.056 R)
• M51: 12,702,056 km (0.098 R)
• M52: 13,514,073 km (0.065 R)
• M53: 14,798,521 km (0.117 R)
• M54: 14,869,131 km (0.094 R)
• M55: 14,939,741 km (0.082 R)
• M56: 15,330,341 km (0.114 R)
• M57: 15,401,699 km (0.086 R)
• M58: 16,595,640 km (0.104 R)
• M59: 16,668,943 km (0.117 R)
• M60: 17,000,152 km (0.025 R)
• M61: 17,370,856 km (0.073 R)
• M62: 17,445,206 km (0.11 R)
• M63: 17,519,855 km (0.099 R)
• M64: 17,631,755 km (0.09 R)
• M65: 18,157,741 km (0.116 R)
• M66: 18,233,288 km (0.081 R)
• M67: 18,574,670 km (0.118 R)
• M68: 19,148,228 km (0.089 R)
• M69: 19,572,488 km (0.089 R)
• M70: 19,805,262 km (0.107 R)
• M71: 20,391,237 km (0.087 R)
• M72: 21,700,218 km (0.082 R)
• M73: 21,981,462 km (0.119 R)
• M74: 22,182,971 km (0.11 R)
• M75: 22,710,004 km (0.048 R)
• M76: 23,446,474 km (0.071 R)
• M77: 23,817,776 km (0.107 R)
• M78: 25,069,013 km (0.069 R)
• M79: 25,915,138 km (0.031 R)
• M80: 27,115,362 km (0.098 R)
• M81: 27,288,297 km (0.084 R)
• M82: 27,983,628 km (0.113 R)
• M83: 28,333,538 km (0.095 R)
• M84: 28,509,016 km (0.091 R)
• M85: 29,081,976 km (0.109 R)
• M86: 29,391,942 km (0.054 R)

Planet 4 - Ice Giant

Semi-Major Axis: 6.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 229.2

Radius: 6.9

Gravity: 4.81 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 5.95 AU - 6.45 AU

Year: 10127 Days

Day: 22.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 45,100,194 km

• M1: 114,442 km (0.078 R)
• M2: 226,192 km (0.119 R)
• M3: 286,480 km (0.075 R)
• M4: 394,789 km (0.095 R)
• M5: 705,803 km (0.065 R)
• M6: 886,218 km (0.086 R)
• M7: 1,192,295 km (0.081 R)
• M8: 1,340,397 km (0.109 R)
• M9: 1,709,455 km (0.062 R)
• M10: 2,432,013 km (0.082 R)
• M11: 2,578,469 km (0.109 R)
• M12: 2,642,048 km (0.076 R)
• M13: 2,946,031 km (0.036 R)
• M14: 3,102,211 km (0.104 R)
• M15: 3,947,888 km (0.11 R)
• M16: 4,219,857 km (0.055 R)
• M17: 4,345,519 km (0.083 R)
• M18: 4,421,515 km (0.095 R)
• M19: 4,549,122 km (0.075 R)
• M20: 4,729,836 km (0.113 R)
• M21: 5,071,817 km (0.118 R)
• M22: 5,232,335 km (0.116 R)
• M23: 5,394,649 km (0.074 R)
• M24: 5,585,984 km (0.099 R)
• M25: 5,668,712 km (0.104 R)
• M26: 6,373,767 km (0.111 R)
• M27: 6,431,362 km (0.116 R)
• M28: 6,809,994 km (0.107 R)
• M29: 6,927,877 km (0.105 R)
• M30: 6,987,118 km (0.118 R)
• M31: 7,106,048 km (0.102 R)
• M32: 7,225,727 km (0.086 R)
• M33: 7,285,865 km (0.074 R)
• M34: 8,113,141 km (0.057 R)
• M35: 8,617,436 km (0.054 R)
• M36: 8,841,234 km (0.1 R)
• M37: 9,360,040 km (0.045 R)
• M38: 9,722,366 km (0.064 R)
• M39: 9,855,358 km (0.035 R)
• M40: 10,190,308 km (0.075 R)
• M41: 10,257,776 km (0.115 R)
• M42: 10,494,889 km (0.109 R)
• M43: 10,768,204 km (0.095 R)
• M44: 11,078,470 km (0.104 R)
• M45: 11,321,866 km (0.058 R)
• M46: 11,496,746 km (0.079 R)
• M47: 11,884,803 km (0.101 R)
• M48: 12,855,244 km (0.086 R)
• M49: 13,074,405 km (0.047 R)
• M50: 13,627,618 km (0.101 R)
• M51: 13,776,318 km (0.108 R)
• M52: 15,101,307 km (0.069 R)
• M53: 15,487,269 km (0.085 R)
• M54: 16,269,068 km (0.105 R)
• M55: 16,466,537 km (0.067 R)
• M56: 16,664,754 km (0.119 R)
• M57: 16,943,604 km (0.097 R)
• M58: 17,063,582 km (0.105 R)
• M59: 17,223,951 km (0.079 R)
• M60: 17,829,972 km (0.051 R)
• M61: 18,156,095 km (0.072 R)
• M62: 18,690,160 km (0.072 R)
• M63: 19,062,957 km (0.067 R)
• M64: 19,271,048 km (0.117 R)
• M65: 19,438,149 km (0.114 R)
• M66: 19,689,623 km (0.046 R)
• M67: 19,942,294 km (0.072 R)
• M68: 20,408,142 km (0.085 R)
• M69: 20,578,384 km (0.104 R)
• M70: 20,706,440 km (0.089 R)
• M71: 21,740,161 km (0.079 R)
• M72: 22,175,940 km (0.117 R)
• M73: 23,634,070 km (0.103 R)
• M74: 24,081,966 km (0.079 R)
• M75: 24,850,001 km (0.108 R)
• M76: 25,396,931 km (0.114 R)
• M77: 25,993,976 km (0.118 R)
• M78: 26,456,234 km (0.104 R)
• M79: 26,595,509 km (0.069 R)
• M80: 26,642,034 km (0.116 R)
• M81: 26,921,334 km (0.038 R)
• M82: 28,001,281 km (0.101 R)
• M83: 29,239,053 km (0.106 R)
• M84: 30,543,248 km (0.074 R)
• M85: 30,689,255 km (0.037 R)
• M86: 31,080,005 km (0.1 R)
• M87: 31,521,468 km (0.071 R)
• M88: 32,361,011 km (0.107 R)
• M89: 32,659,010 km (0.085 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 849.6

Radius: 3.8

Gravity: 58.84 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 4.9 AU - 7.5 AU

Year: 10127 Days

Day: 21.4 Hours

Environment

Temp: -220 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 45,100,194 km

• M1: 55,800 km (0.089 R)
• M2: 84,373 km (0.107 R)
• M3: 115,490 km (0.077 R)
• M4: 152,291 km (0.102 R)
• M5: 228,286 km (0.08 R)
• M6: 387,010 km (0.051 R)
• M7: 462,407 km (0.097 R)
• M8: 716,574 km (0.064 R)
• M9: 1,310,477 km (0.103 R)
• M10: 1,614,909 km (0.064 R)
• M11: 2,204,325 km (0.096 R)
• M12: 2,621,104 km (0.102 R)
• M13: 2,823,809 km (0.091 R)
• M14: 3,091,889 km (0.096 R)
• M15: 3,399,312 km (0.065 R)
• M16: 3,943,998 km (0.068 R)
• M17: 4,109,454 km (0.117 R)
• M18: 5,005,096 km (0.116 R)
• M19: 5,292,473 km (0.108 R)
• M20: 6,072,028 km (0.066 R)
• M21: 6,224,618 km (0.099 R)
• M22: 6,339,808 km (0.065 R)
• M23: 6,494,492 km (0.087 R)
• M24: 7,005,967 km (0.085 R)
• M25: 7,530,308 km (0.031 R)
• M26: 8,025,327 km (0.08 R)
• M27: 8,787,529 km (0.08 R)
• M28: 8,960,015 km (0.067 R)
• M29: 9,003,398 km (0.115 R)
• M30: 9,484,206 km (0.097 R)
• M31: 9,750,041 km (0.089 R)
• M32: 10,289,042 km (0.097 R)
• M33: 10,516,431 km (0.09 R)
• M34: 11,022,670 km (0.091 R)
• M35: 11,536,689 km (0.093 R)
• M36: 12,539,593 km (0.051 R)
• M37: 12,588,062 km (0.112 R)
• M38: 12,880,077 km (0.028 R)
• M39: 13,026,983 km (0.076 R)
• M40: 13,919,633 km (0.08 R)
• M41: 14,020,013 km (0.106 R)
• M42: 14,474,791 km (0.03 R)
• M43: 14,525,654 km (0.113 R)
• M44: 14,780,718 km (0.069 R)
• M45: 15,191,813 km (0.077 R)
• M46: 15,606,648 km (0.069 R)
• M47: 16,713,523 km (0.055 R)
• M48: 17,034,261 km (0.106 R)
• M49: 17,682,020 km (0.094 R)
• M50: 18,009,040 km (0.111 R)
• M51: 18,503,013 km (0.069 R)
• M52: 18,558,214 km (0.112 R)
• M53: 18,779,470 km (0.055 R)
• M54: 20,809,662 km (0.112 R)
• M55: 21,734,027 km (0.083 R)
• M56: 22,201,222 km (0.12 R)
• M57: 22,377,298 km (0.088 R)
• M58: 23,982,483 km (0.114 R)
• M59: 24,525,823 km (0.077 R)
• M60: 25,932,492 km (0.064 R)
• M61: 26,926,570 km (0.055 R)
• M62: 27,428,171 km (0.075 R)
• M63: 28,059,474 km (0.079 R)
• M64: 28,376,921 km (0.101 R)
• M65: 28,504,229 km (0.115 R)
• M66: 29,658,675 km (0.109 R)
• M67: 29,852,554 km (0.084 R)
• M68: 29,982,106 km (0.098 R)
• M69: 30,241,658 km (0.073 R)
• M70: 30,632,408 km (0.089 R)
• M71: 31,221,674 km (0.113 R)
• M72: 31,484,667 km (0.081 R)
• M73: 33,212,522 km (0.051 R)
• M74: 33,413,881 km (0.068 R)
• M75: 35,861,302 km (0.082 R)
• M76: 36,274,791 km (0.029 R)
• M77: 36,343,905 km (0.043 R)
• M78: 37,245,831 km (0.057 R)
• M79: 37,874,591 km (0.085 R)
• M80: 37,944,602 km (0.064 R)
• M81: 39,213,192 km (0.073 R)
• M82: 39,355,011 km (0.054 R)
• M83: 42,227,141 km (0.086 R)
• M84: 45,091,491 km (0.109 R)
• M85: 45,240,042 km (0.074 R)
• M86: 45,761,390 km (0.086 R)
• M87: 46,134,936 km (0.114 R)
• M88: 46,885,169 km (0.117 R)
• M89: 48,245,612 km (0.115 R)
• M90: 48,321,608 km (0.053 R)
• M91: 48,625,890 km (0.037 R)
• M92: 49,159,805 km (0.118 R)
• M93: 50,618,983 km (0.089 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 373.6

Radius: 7.8

Gravity: 6.14 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 6.41 AU - 7.75 AU

Year: 12358 Days

Day: 24.5 Hours

Environment

Temp: -223 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 45,100,194 km

• M1: 129,253 km (0.099 R)
• M2: 264,339 km (0.09 R)
• M3: 417,228 km (0.108 R)
• M4: 512,373 km (0.093 R)
• M5: 877,541 km (0.089 R)
• M6: 1,312,123 km (0.09 R)
• M7: 1,716,486 km (0.118 R)
• M8: 2,404,038 km (0.08 R)
• M9: 2,454,452 km (0.07 R)
• M10: 2,869,886 km (0.064 R)
• M11: 2,977,147 km (0.104 R)
• M12: 3,448,231 km (0.107 R)
• M13: 3,591,246 km (0.101 R)
• M14: 4,152,388 km (0.108 R)
• M15: 4,396,981 km (0.09 R)
• M16: 4,677,626 km (0.071 R)
• M17: 5,487,848 km (0.061 R)
• M18: 5,688,609 km (0.037 R)
• M19: 5,756,227 km (0.052 R)
• M20: 6,657,853 km (0.1 R)
• M21: 7,344,358 km (0.089 R)
• M22: 8,053,302 km (0.083 R)
• M23: 8,979,612 km (0.076 R)
• M24: 9,455,483 km (0.116 R)
• M25: 9,535,518 km (0.114 R)
• M26: 9,736,727 km (0.077 R)
• M27: 10,143,484 km (0.113 R)
• M28: 10,266,603 km (0.052 R)
• M29: 10,431,460 km (0.102 R)
• M30: 10,722,278 km (0.109 R)
• M31: 11,269,208 km (0.086 R)
• M32: 12,041,581 km (0.111 R)
• M33: 12,259,097 km (0.092 R)
• M34: 12,698,166 km (0.11 R)
• M35: 12,875,141 km (0.091 R)
• M36: 13,008,582 km (0.095 R)
• M37: 13,501,357 km (0.1 R)
• M38: 13,591,565 km (0.045 R)
• M39: 14,045,894 km (0.108 R)
• M40: 15,580,319 km (0.086 R)
• M41: 15,722,437 km (0.083 R)
• M42: 16,199,355 km (0.116 R)
• M43: 16,343,268 km (0.101 R)
• M44: 16,632,590 km (0.106 R)
• M45: 17,118,484 km (0.082 R)
• M46: 18,153,851 km (0.11 R)
• M47: 18,253,483 km (0.085 R)
• M48: 18,553,577 km (0.118 R)
• M49: 18,754,636 km (0.06 R)
• M50: 19,412,717 km (0.093 R)
• M51: 20,543,827 km (0.115 R)
• M52: 20,751,768 km (0.05 R)
• M53: 20,960,307 km (0.05 R)
• M54: 21,012,667 km (0.051 R)
• M55: 21,327,121 km (0.119 R)
• M56: 21,590,413 km (0.047 R)
• M57: 22,067,032 km (0.111 R)
• M58: 22,923,031 km (0.054 R)
• M59: 23,084,597 km (0.114 R)
• M60: 23,138,602 km (0.117 R)
• M61: 24,943,500 km (0.096 R)
• M62: 25,834,804 km (0.117 R)
• M63: 26,849,975 km (0.028 R)
• M64: 27,020,517 km (0.052 R)
• M65: 27,077,364 km (0.074 R)
• M66: 27,705,974 km (0.105 R)
• M67: 28,339,222 km (0.075 R)
• M68: 28,628,694 km (0.101 R)
• M69: 29,855,097 km (0.116 R)
• M70: 30,090,714 km (0.115 R)
• M71: 30,208,747 km (0.042 R)
• M72: 30,326,929 km (0.113 R)
• M73: 31,397,302 km (0.036 R)
• M74: 32,722,290 km (0.107 R)
• M75: 32,843,614 km (0.087 R)
• M76: 33,452,627 km (0.051 R)
• M77: 35,863,247 km (0.094 R)
• M78: 35,925,929 km (0.112 R)
• M79: 36,427,530 km (0.07 R)
• M80: 38,265,490 km (0.102 R)
• M81: 38,713,685 km (0.105 R)
• M82: 40,719,194 km (0.032 R)
• M83: 40,849,793 km (0.118 R)
• M84: 40,980,392 km (0.076 R)
• M85: 41,307,712 km (0.07 R)
• M86: 42,625,819 km (0.101 R)
• M87: 43,223,313 km (0.112 R)
• M88: 43,890,519 km (0.11 R)
• M89: 44,763,124 km (0.086 R)
• M90: 44,965,230 km (0.114 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: 215 - 16,305 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit