🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 698.4

Radius: 14.7

Gravity: 3.23 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.43 AU - 0.65 AU

Year: 269 Days

Day: 13.1 Hours

Environment

Temp: -152 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 25,100,894 km

• M1: 189,690 km (0.03 R)
• M2: 298,597 km (0.112 R)
• M3: 421,567 km (0.093 R)
• M4: 529,277 km (0.11 R)
• M5: 661,671 km (0.071 R)
• M6: 765,044 km (0.086 R)
• M7: 909,555 km (0.089 R)
• M8: 1,001,857 km (0.097 R)
• M9: 1,113,008 km (0.117 R)
• M10: 1,216,979 km (0.11 R)
• M11: 1,320,500 km (0.094 R)
• M12: 1,490,144 km (0.102 R)
• M13: 1,601,894 km (0.064 R)
• M14: 1,838,707 km (0.107 R)
• M15: 1,935,946 km (0.075 R)
• M16: 2,082,702 km (0.112 R)
• M17: 2,257,881 km (0.061 R)
• M18: 2,402,841 km (0.084 R)
• M19: 2,499,631 km (0.098 R)
• M20: 2,744,672 km (0.109 R)
• M21: 2,851,335 km (0.034 R)
• M22: 2,948,574 km (0.078 R)
• M23: 3,041,624 km (0.05 R)
• M24: 3,241,786 km (0.118 R)
• M25: 3,400,509 km (0.099 R)
• M26: 3,550,406 km (0.088 R)
• M27: 3,732,018 km (0.103 R)
• M28: 3,832,847 km (0.081 R)
• M29: 3,952,825 km (0.071 R)
• M30: 4,092,250 km (0.069 R)
• M31: 4,196,519 km (0.096 R)
• M32: 4,320,237 km (0.105 R)

Planet 2 - Gas Giant

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 893.2

Radius: 14.7

Gravity: 4.13 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 1.84 AU - 2.4 AU

Year: 2094 Days

Day: 10.1 Hours

Environment

Temp: -212 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 25,100,894 km

• M1: 193,580 km (0.05 R)
• M2: 393,293 km (0.094 R)
• M3: 521,349 km (0.086 R)
• M4: 735,124 km (0.04 R)
• M5: 914,342 km (0.077 R)
• M6: 1,255,425 km (0.072 R)
• M7: 1,441,675 km (0.08 R)
• M8: 1,637,498 km (0.115 R)
• M9: 1,805,646 km (0.091 R)
• M10: 1,916,947 km (0.083 R)
• M11: 2,043,507 km (0.036 R)
• M12: 2,386,086 km (0.083 R)
• M13: 2,481,679 km (0.116 R)
• M14: 3,037,734 km (0.08 R)
• M15: 3,445,538 km (0.078 R)
• M16: 3,743,238 km (0.101 R)
• M17: 4,016,852 km (0.096 R)
• M18: 4,635,140 km (0.096 R)
• M19: 4,790,124 km (0.105 R)
• M20: 5,646,123 km (0.084 R)
• M21: 5,756,526 km (0.116 R)
• M22: 6,091,924 km (0.093 R)
• M23: 6,338,312 km (0.091 R)
• M24: 6,549,395 km (0.106 R)
• M25: 6,762,721 km (0.103 R)
• M26: 7,946,489 km (0.078 R)
• M27: 8,236,859 km (0.092 R)
• M28: 8,935,032 km (0.096 R)
• M29: 9,215,378 km (0.109 R)
• M30: 9,586,531 km (0.099 R)
• M31: 9,696,485 km (0.11 R)
• M32: 10,007,050 km (0.081 R)
• M33: 10,410,965 km (0.084 R)
• M34: 10,615,016 km (0.114 R)
• M35: 11,165,686 km (0.108 R)
• M36: 11,514,548 km (0.098 R)
• M37: 12,032,755 km (0.09 R)
• M38: 12,897,281 km (0.097 R)
• M39: 13,386,317 km (0.118 R)
• M40: 13,732,187 km (0.068 R)
• M41: 14,206,412 km (0.056 R)
• M42: 14,432,903 km (0.12 R)
• M43: 14,915,207 km (0.115 R)
• M44: 15,428,477 km (0.117 R)
• M45: 15,687,282 km (0.069 R)
• M46: 16,025,971 km (0.103 R)
• M47: 16,923,110 km (0.104 R)
• M48: 17,056,401 km (0.117 R)
• M49: 17,189,992 km (0.113 R)
• M50: 17,431,593 km (0.055 R)
• M51: 17,701,168 km (0.057 R)
• M52: 17,945,013 km (0.095 R)
• M53: 18,436,142 km (0.068 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 94.5

Radius: 12.7

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 2.35 AU - 2.57 AU

Year: 2617 Days

Day: 5.1 Hours

Environment

Temp: -206 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 25,100,894 km

• M1: 158,873 km (0.105 R)
• M2: 276,158 km (0.115 R)
• M3: 427,252 km (0.118 R)
• M4: 507,137 km (0.047 R)
• M5: 772,523 km (0.034 R)
• M6: 863,329 km (0.087 R)
• M7: 1,251,087 km (0.084 R)
• M8: 1,389,914 km (0.103 R)
• M9: 1,557,463 km (0.027 R)
• M10: 1,667,717 km (0.114 R)
• M11: 1,846,487 km (0.085 R)
• M12: 1,980,526 km (0.093 R)
• M13: 2,503,820 km (0.113 R)
• M14: 2,728,964 km (0.101 R)
• M15: 3,239,691 km (0.119 R)
• M16: 3,351,591 km (0.108 R)
• M17: 3,475,159 km (0.102 R)
• M18: 3,984,988 km (0.061 R)
• M19: 4,326,969 km (0.07 R)
• M20: 4,575,451 km (0.049 R)
• M21: 4,805,532 km (0.066 R)
• M22: 4,898,732 km (0.059 R)
• M23: 5,229,343 km (0.092 R)
• M24: 5,813,224 km (0.092 R)
• M25: 6,239,428 km (0.029 R)
• M26: 6,392,317 km (0.103 R)
• M27: 6,494,941 km (0.111 R)
• M28: 6,806,254 km (0.111 R)
• M29: 7,878,721 km (0.026 R)
• M30: 8,085,765 km (0.084 R)
• M31: 8,618,184 km (0.072 R)
• M32: 9,003,398 km (0.104 R)
• M33: 9,482,111 km (0.115 R)
• M34: 9,643,378 km (0.092 R)
• M35: 9,983,863 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 753.9

Radius: 12.9

Gravity: 4.53 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 2.34 AU - 2.6 AU

Year: 2633 Days

Day: 9.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (68)

Outer Limit: 25,100,894 km

• M1: 226,192 km (0.094 R)
• M2: 315,801 km (0.075 R)
• M3: 494,720 km (0.102 R)
• M4: 798,254 km (0.043 R)
• M5: 1,105,827 km (0.039 R)
• M6: 1,251,087 km (0.091 R)
• M7: 1,367,474 km (0.064 R)
• M8: 1,487,751 km (0.1 R)
• M9: 1,586,635 km (0.111 R)
• M10: 1,964,370 km (0.106 R)
• M11: 2,185,176 km (0.073 R)
• M12: 2,865,248 km (0.08 R)
• M13: 3,005,870 km (0.103 R)
• M14: 3,574,492 km (0.085 R)
• M15: 3,811,455 km (0.12 R)
• M16: 4,001,294 km (0.089 R)
• M17: 4,176,773 km (0.1 R)
• M18: 5,282,002 km (0.062 R)
• M19: 5,533,176 km (0.113 R)
• M20: 5,907,171 km (0.075 R)
• M21: 6,679,994 km (0.052 R)
• M22: 6,805,058 km (0.114 R)
• M23: 6,951,813 km (0.116 R)
• M24: 7,099,765 km (0.085 R)
• M25: 7,398,662 km (0.066 R)
• M26: 7,527,914 km (0.054 R)
• M27: 7,658,065 km (0.073 R)
• M28: 7,745,280 km (0.06 R)
• M29: 8,230,725 km (0.064 R)
• M30: 8,567,470 km (0.114 R)
• M31: 9,161,822 km (0.09 R)
• M32: 9,277,761 km (0.116 R)
• M33: 9,510,834 km (0.084 R)
• M34: 10,827,744 km (0.101 R)
• M35: 10,950,415 km (0.084 R)
• M36: 11,147,435 km (0.103 R)
• M37: 11,295,986 km (0.119 R)
• M38: 11,495,250 km (0.087 R)
• M39: 11,695,562 km (0.086 R)
• M40: 11,846,506 km (0.028 R)
• M41: 12,303,378 km (0.06 R)
• M42: 12,431,433 km (0.093 R)
• M43: 13,313,163 km (0.091 R)
• M44: 13,470,989 km (0.113 R)
• M45: 13,761,807 km (0.116 R)
• M46: 13,868,022 km (0.09 R)
• M47: 14,538,370 km (0.086 R)
• M48: 14,673,756 km (0.106 R)
• M49: 14,891,122 km (0.064 R)
• M50: 15,109,535 km (0.042 R)
• M51: 15,329,144 km (0.106 R)
• M52: 15,494,599 km (0.105 R)
• M53: 15,799,330 km (0.109 R)
• M54: 15,882,806 km (0.11 R)
• M55: 16,106,006 km (0.109 R)
• M56: 16,190,080 km (0.099 R)
• M57: 16,358,527 km (0.091 R)
• M58: 16,499,299 km (0.047 R)
• M59: 17,209,440 km (0.106 R)
• M60: 17,669,154 km (0.089 R)
• M61: 17,987,498 km (0.08 R)
• M62: 18,659,492 km (0.092 R)
• M63: 19,131,772 km (0.107 R)
• M64: 19,518,483 km (0.09 R)
• M65: 19,757,690 km (0.071 R)
• M66: 20,028,013 km (0.106 R)
• M67: 20,178,658 km (0.073 R)
• M68: 20,329,752 km (0.042 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 569.5

Radius: 4.1

Gravity: 33.88 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 6.35 AU - 8.49 AU

Year: 13709 Days

Day: 17.7 Hours

Environment

Temp: -232 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 25,100,894 km

• M1: 232,325 km (0.096 R)
• M2: 283,937 km (0.096 R)
• M3: 339,737 km (0.033 R)
• M4: 399,426 km (0.093 R)
• M5: 495,468 km (0.03 R)
• M6: 563,834 km (0.098 R)
• M7: 599,289 km (0.093 R)
• M8: 847,322 km (0.112 R)
• M9: 1,238,371 km (0.11 R)
• M10: 1,526,347 km (0.11 R)
• M11: 1,678,039 km (0.08 R)
• M12: 1,914,703 km (0.101 R)
• M13: 2,161,839 km (0.081 R)
• M14: 2,536,282 km (0.034 R)
• M15: 2,807,354 km (0.111 R)
• M16: 3,674,273 km (0.049 R)
• M17: 4,014,908 km (0.04 R)
• M18: 4,259,351 km (0.102 R)
• M19: 4,365,565 km (0.098 R)
• M20: 4,653,242 km (0.098 R)
• M21: 5,208,848 km (0.116 R)
• M22: 5,246,547 km (0.086 R)
• M23: 6,021,314 km (0.084 R)
• M24: 6,462,478 km (0.054 R)
• M25: 7,038,879 km (0.12 R)
• M26: 7,164,541 km (0.027 R)
• M27: 7,248,765 km (0.104 R)
• M28: 7,760,689 km (0.091 R)
• M29: 8,108,504 km (0.116 R)
• M30: 8,152,336 km (0.091 R)
• M31: 8,729,185 km (0.1 R)
• M32: 9,181,869 km (0.097 R)
• M33: 9,595,955 km (0.105 R)
• M34: 10,299,215 km (0.058 R)
• M35: 11,165,087 km (0.069 R)
• M36: 11,507,966 km (0.104 R)
• M37: 11,656,068 km (0.116 R)
• M38: 11,954,067 km (0.099 R)
• M39: 12,405,703 km (0.109 R)
• M40: 12,608,258 km (0.099 R)
• M41: 16,546,871 km (0.052 R)
• M42: 17,614,551 km (0.113 R)
• M43: 18,242,712 km (0.043 R)
• M44: 18,357,753 km (0.044 R)
• M45: 18,415,348 km (0.088 R)
• M46: 18,820,310 km (0.083 R)
• M47: 19,521,176 km (0.111 R)
• M48: 19,579,968 km (0.119 R)
• M49: 19,993,157 km (0.111 R)
• M50: 20,111,639 km (0.067 R)
• M51: 21,310,366 km (0.074 R)
• M52: 21,857,296 km (0.111 R)
• M53: 23,151,318 km (0.085 R)
• M54: 23,901,701 km (0.104 R)
• M55: 24,469,873 km (0.072 R)
• M56: 25,106,263 km (0.095 R)
• M57: 25,362,374 km (0.079 R)
• M58: 26,395,497 km (0.104 R)
• M59: 26,851,771 km (0.025 R)
• M60: 27,048,043 km (0.117 R)
• M61: 27,244,914 km (0.087 R)
• M62: 27,640,002 km (0.116 R)
• M63: 28,302,571 km (0.104 R)
• M64: 28,502,434 km (0.116 R)
• M65: 29,104,715 km (0.066 R)
• M66: 29,846,421 km (0.073 R)
• M67: 30,049,874 km (0.111 R)
• M68: 30,799,509 km (0.115 R)
• M69: 31,005,056 km (0.077 R)
• M70: 31,624,391 km (0.117 R)
• M71: 32,108,789 km (0.11 R)
• M72: 34,141,974 km (0.056 R)
• M73: 34,354,702 km (0.116 R)
• M74: 34,496,820 km (0.12 R)
• M75: 34,638,938 km (0.102 R)
• M76: 34,924,072 km (0.102 R)
• M77: 35,281,461 km (0.115 R)
• M78: 35,496,583 km (0.119 R)
• M79: 36,360,959 km (0.068 R)
• M80: 37,670,689 km (0.108 R)
• M81: 38,626,170 km (0.079 R)
• M82: 39,218,129 km (0.077 R)
• M83: 42,450,789 km (0.085 R)
• M84: 43,061,597 km (0.089 R)
• M85: 43,829,184 km (0.09 R)
• M86: 44,137,505 km (0.115 R)
• M87: 44,601,259 km (0.098 R)
• M88: 45,455,762 km (0.069 R)
• M89: 47,180,924 km (0.045 R)
• M90: 52,237,931 km (0.114 R)
• M91: 52,646,632 km (0.104 R)
• M92: 53,796,591 km (0.073 R)
• M93: 54,871,751 km (0.115 R)
• M94: 55,120,831 km (0.045 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 770.4

Radius: 6.1

Gravity: 20.7 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 6.29 AU - 9.59 AU

Year: 15175 Days

Day: 24.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 25,100,894 km

• M1: 131,945 km (0.115 R)
• M2: 320,289 km (0.101 R)
• M3: 582,235 km (0.07 R)
• M4: 923,916 km (0.115 R)
• M5: 1,216,081 km (0.063 R)
• M6: 1,293,573 km (0.09 R)
• M7: 1,880,744 km (0.049 R)
• M8: 2,249,354 km (0.102 R)
• M9: 2,606,593 km (0.109 R)
• M10: 2,707,123 km (0.048 R)
• M11: 2,946,779 km (0.107 R)
• M12: 3,520,038 km (0.112 R)
• M13: 3,706,138 km (0.073 R)
• M14: 3,895,529 km (0.091 R)
• M15: 4,166,002 km (0.111 R)
• M16: 5,781,060 km (0.061 R)
• M17: 5,824,743 km (0.118 R)
• M18: 6,089,381 km (0.101 R)
• M19: 6,313,030 km (0.089 R)
• M20: 6,358,059 km (0.115 R)
• M21: 7,046,359 km (0.111 R)
• M22: 7,186,831 km (0.077 R)
• M23: 7,375,624 km (0.094 R)
• M24: 7,613,933 km (0.079 R)
• M25: 7,806,316 km (0.098 R)
• M26: 8,943,858 km (0.086 R)
• M27: 10,079,456 km (0.072 R)
• M28: 10,503,566 km (0.081 R)
• M29: 10,556,972 km (0.087 R)
• M30: 12,767,281 km (0.031 R)
• M31: 14,396,102 km (0.07 R)
• M32: 15,295,335 km (0.037 R)
• M33: 15,966,282 km (0.081 R)
• M34: 16,274,453 km (0.074 R)
• M35: 16,959,312 km (0.107 R)
• M36: 17,084,825 km (0.112 R)
• M37: 17,844,483 km (0.091 R)
• M38: 18,036,118 km (0.112 R)
• M39: 18,679,837 km (0.093 R)
• M40: 19,331,037 km (0.115 R)
• M41: 20,321,674 km (0.082 R)
• M42: 21,396,535 km (0.113 R)
• M43: 22,973,895 km (0.086 R)
• M44: 23,461,284 km (0.05 R)
• M45: 23,881,804 km (0.116 R)
• M46: 25,949,097 km (0.085 R)
• M47: 26,456,683 km (0.099 R)
• M48: 28,147,288 km (0.113 R)
• M49: 28,295,839 km (0.114 R)
• M50: 29,343,772 km (0.098 R)
• M51: 29,796,754 km (0.026 R)
• M52: 30,175,985 km (0.051 R)
• M53: 30,328,126 km (0.089 R)
• M54: 31,246,358 km (0.086 R)
• M55: 31,941,090 km (0.1 R)
• M56: 34,372,504 km (0.026 R)
• M57: 35,811,486 km (0.104 R)
• M58: 36,538,233 km (0.064 R)
• M59: 37,351,447 km (0.08 R)
• M60: 37,433,127 km (0.105 R)
• M61: 38,006,386 km (0.117 R)
• M62: 39,660,191 km (0.06 R)
• M63: 40,160,895 km (0.073 R)
• M64: 41,000,139 km (0.107 R)
• M65: 42,099,683 km (0.117 R)
• M66: 42,439,869 km (0.112 R)
• M67: 43,123,232 km (0.119 R)
• M68: 43,552,129 km (0.067 R)
• M69: 44,068,690 km (0.117 R)
• M70: 44,327,644 km (0.101 R)
• M71: 45,194,714 km (0.076 R)
• M72: 45,368,845 km (0.037 R)
• M73: 45,892,438 km (0.072 R)
• M74: 46,067,467 km (0.116 R)
• M75: 46,330,311 km (0.097 R)
• M76: 47,563,745 km (0.081 R)
• M77: 47,829,431 km (0.114 R)
• M78: 49,793,053 km (0.112 R)
• M79: 49,882,961 km (0.092 R)
• M80: 50,152,836 km (0.09 R)
• M81: 52,056,169 km (0.107 R)
• M82: 52,970,661 km (0.057 R)
• M83: 53,429,927 km (0.039 R)
• M84: 53,890,539 km (0.098 R)
• M85: 53,982,840 km (0.071 R)
• M86: 59,138,581 km (0.1 R)
• M87: 59,615,051 km (0.072 R)
• M88: 60,859,705 km (0.117 R)
• M89: 61,437,153 km (0.043 R)
• M90: 61,533,494 km (0.116 R)
• M91: 62,791,313 km (0.039 R)
• M92: 63,082,879 km (0.112 R)
• M93: 63,277,356 km (0.101 R)
• M94: 64,742,966 km (0.111 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 25.5

Radius: 6.6

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 7.85 AU - 11.01 AU

Year: 19641 Days

Day: 22.9 Hours

Environment

Temp: -236 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (49)

Outer Limit: 25,100,894 km

• M1: 115,041 km (0.115 R)
• M2: 422,614 km (0.105 R)
• M3: 637,586 km (0.075 R)
• M4: 724,054 km (0.108 R)
• M5: 861,385 km (0.104 R)
• M6: 1,019,809 km (0.072 R)
• M7: 1,096,253 km (0.046 R)
• M8: 1,187,807 km (0.072 R)
• M9: 1,350,719 km (0.069 R)
• M10: 1,866,682 km (0.058 R)
• M11: 2,286,304 km (0.051 R)
• M12: 3,079,023 km (0.087 R)
• M13: 3,592,144 km (0.089 R)
• M14: 4,400,272 km (0.098 R)
• M15: 5,306,984 km (0.045 R)
• M16: 5,667,216 km (0.064 R)
• M17: 5,804,397 km (0.06 R)
• M18: 6,650,224 km (0.071 R)
• M19: 7,309,651 km (0.074 R)
• M20: 7,458,950 km (0.087 R)
• M21: 7,559,031 km (0.119 R)
• M22: 8,040,886 km (0.054 R)
• M23: 8,716,170 km (0.088 R)
• M24: 10,482,472 km (0.112 R)
• M25: 10,650,920 km (0.118 R)
• M26: 11,913,825 km (0.117 R)
• M27: 12,711,929 km (0.083 R)
• M28: 13,864,282 km (0.071 R)
• M29: 14,018,517 km (0.071 R)
• M30: 14,142,085 km (0.09 R)
• M31: 14,986,565 km (0.102 R)
• M32: 15,239,834 km (0.093 R)
• M33: 15,430,871 km (0.105 R)
• M34: 15,558,478 km (0.117 R)
• M35: 15,943,842 km (0.107 R)
• M36: 18,084,887 km (0.118 R)
• M37: 18,152,206 km (0.076 R)
• M38: 18,253,334 km (0.066 R)
• M39: 18,388,421 km (0.116 R)
• M40: 19,377,861 km (0.098 R)
• M41: 19,550,048 km (0.097 R)
• M42: 19,792,247 km (0.093 R)
• M43: 20,629,846 km (0.085 R)
• M44: 20,770,617 km (0.117 R)
• M45: 21,194,727 km (0.108 R)
• M46: 22,015,720 km (0.096 R)
• M47: 23,798,927 km (0.104 R)
• M48: 24,057,432 km (0.089 R)
• M49: 24,763,833 km (0.049 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 326 - 17,018 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit