🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 853.6

Radius: 14.9

Gravity: 3.84 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.49 AU - 0.73 AU

Year: 323 Days

Day: 12.1 Hours

Environment

Temp: -152 °C

Axial Tilt: 43.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 34,826,274 km

• M1: 187,147 km (0.085 R)
• M2: 280,795 km (0.078 R)
• M3: 384,766 km (0.112 R)
• M4: 502,350 km (0.107 R)
• M5: 619,934 km (0.092 R)
• M6: 749,336 km (0.086 R)
• M7: 901,327 km (0.1 R)
• M8: 1,010,534 km (0.101 R)
• M9: 1,203,664 km (0.112 R)
• M10: 1,349,074 km (0.105 R)
• M11: 1,505,553 km (0.056 R)
• M12: 1,618,499 km (0.117 R)
• M13: 1,749,846 km (0.038 R)
• M14: 1,884,933 km (0.095 R)
• M15: 1,986,061 km (0.073 R)
• M16: 2,238,583 km (0.084 R)
• M17: 2,496,190 km (0.077 R)
• M18: 2,691,415 km (0.066 R)
• M19: 2,824,408 km (0.093 R)
• M20: 2,984,627 km (0.044 R)
• M21: 3,128,839 km (0.078 R)
• M22: 3,230,566 km (0.038 R)
• M23: 3,457,207 km (0.08 R)
• M24: 3,556,091 km (0.118 R)
• M25: 3,729,625 km (0.094 R)
• M26: 3,947,140 km (0.083 R)
• M27: 4,064,425 km (0.119 R)
• M28: 4,260,248 km (0.109 R)
• M29: 4,366,463 km (0.033 R)
• M30: 4,487,936 km (0.112 R)
• M31: 4,581,584 km (0.095 R)
• M32: 4,741,505 km (0.049 R)
• M33: 5,097,248 km (0.085 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 388

Radius: 12.3

Gravity: 2.56 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.77 AU - 1.09 AU

Year: 608 Days

Day: 12.9 Hours

Environment

Temp: -167 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 34,826,274 km

• M1: 153,487 km (0.073 R)
• M2: 247,584 km (0.108 R)
• M3: 342,130 km (0.116 R)
• M4: 469,588 km (0.054 R)
• M5: 561,142 km (0.084 R)
• M6: 708,196 km (0.089 R)
• M7: 791,373 km (0.071 R)
• M8: 882,777 km (0.104 R)
• M9: 1,072,617 km (0.034 R)
• M10: 1,380,788 km (0.084 R)
• M11: 1,532,032 km (0.098 R)
• M12: 1,637,797 km (0.09 R)
• M13: 1,757,775 km (0.052 R)
• M14: 1,874,910 km (0.117 R)
• M15: 2,000,872 km (0.069 R)
• M16: 2,267,605 km (0.12 R)
• M17: 2,546,156 km (0.109 R)
• M18: 2,713,406 km (0.105 R)
• M19: 2,891,128 km (0.107 R)
• M20: 3,108,345 km (0.085 R)
• M21: 3,193,915 km (0.111 R)
• M22: 3,301,924 km (0.093 R)
• M23: 3,381,959 km (0.059 R)
• M24: 3,543,974 km (0.113 R)
• M25: 3,670,982 km (0.053 R)
• M26: 3,791,857 km (0.115 R)
• M27: 3,898,820 km (0.103 R)
• M28: 4,022,388 km (0.086 R)
• M29: 4,139,373 km (0.067 R)
• M30: 4,368,707 km (0.094 R)
• M31: 4,448,891 km (0.081 R)
• M32: 4,537,603 km (0.075 R)
• M33: 4,643,069 km (0.117 R)
• M34: 4,733,127 km (0.11 R)
• M35: 4,865,072 km (0.095 R)
• M36: 5,048,479 km (0.117 R)
• M37: 5,141,080 km (0.074 R)
• M38: 5,251,334 km (0.094 R)
• M39: 5,345,132 km (0.075 R)
• M40: 5,577,906 km (0.084 R)
• M41: 5,708,804 km (0.102 R)
• M42: 5,805,295 km (0.045 R)
• M43: 5,893,558 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 256.6

Radius: 12.1

Gravity: 1.75 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.89 AU - 1.45 AU

Year: 858 Days

Day: 9.6 Hours

Environment

Temp: -191 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 34,826,274 km

• M1: 155,133 km (0.079 R)
• M2: 239,955 km (0.111 R)
• M3: 330,910 km (0.098 R)
• M4: 430,543 km (0.085 R)
• M5: 582,983 km (0.113 R)
• M6: 707,748 km (0.072 R)
• M7: 805,734 km (0.03 R)
• M8: 894,446 km (0.115 R)
• M9: 1,001,857 km (0.043 R)
• M10: 1,203,664 km (0.038 R)
• M11: 1,340,397 km (0.094 R)
• M12: 1,447,808 km (0.089 R)
• M13: 1,540,858 km (0.086 R)
• M14: 1,629,869 km (0.12 R)
• M15: 1,763,759 km (0.11 R)
• M16: 1,863,541 km (0.091 R)
• M17: 1,945,969 km (0.094 R)
• M18: 2,042,759 km (0.067 R)
• M19: 2,234,693 km (0.111 R)
• M20: 2,411,966 km (0.12 R)
• M21: 2,558,572 km (0.104 R)
• M22: 2,658,055 km (0.047 R)
• M23: 2,751,554 km (0.09 R)
• M24: 3,031,451 km (0.077 R)
• M25: 3,190,175 km (0.059 R)
• M26: 3,282,028 km (0.096 R)
• M27: 3,508,070 km (0.1 R)
• M28: 3,666,943 km (0.059 R)
• M29: 3,828,210 km (0.109 R)
• M30: 4,049,764 km (0.092 R)
• M31: 4,250,225 km (0.047 R)
• M32: 4,351,652 km (0.039 R)
• M33: 4,428,396 km (0.075 R)
• M34: 4,609,110 km (0.082 R)
• M35: 4,862,679 km (0.078 R)
• M36: 4,951,091 km (0.082 R)
• M37: 5,076,005 km (0.043 R)
• M38: 5,165,764 km (0.069 R)
• M39: 5,319,700 km (0.044 R)
• M40: 5,438,481 km (0.118 R)
• M41: 5,539,759 km (0.092 R)
• M42: 5,632,210 km (0.099 R)
• M43: 5,753,385 km (0.093 R)
• M44: 5,837,758 km (0.108 R)
• M45: 5,913,005 km (0.119 R)
• M46: 6,236,885 km (0.116 R)
• M47: 6,323,502 km (0.059 R)
• M48: 6,556,725 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 199.9

Radius: 12.9

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 1.99 AU - 2.47 AU

Year: 2259 Days

Day: 6.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (49)

Outer Limit: 34,826,274 km

• M1: 179,667 km (0.064 R)
• M2: 474,524 km (0.107 R)
• M3: 674,387 km (0.06 R)
• M4: 809,324 km (0.118 R)
• M5: 1,004,699 km (0.116 R)
• M6: 1,123,779 km (0.051 R)
• M7: 1,319,902 km (0.066 R)
• M8: 1,401,732 km (0.095 R)
• M9: 1,819,559 km (0.048 R)
• M10: 2,295,579 km (0.115 R)
• M11: 2,507,111 km (0.055 R)
• M12: 2,589,539 km (0.104 R)
• M13: 2,704,281 km (0.071 R)
• M14: 2,788,804 km (0.044 R)
• M15: 3,004,224 km (0.069 R)
• M16: 3,292,500 km (0.081 R)
• M17: 4,125,460 km (0.12 R)
• M18: 4,322,182 km (0.117 R)
• M19: 4,648,305 km (0.087 R)
• M20: 4,930,596 km (0.099 R)
• M21: 5,034,716 km (0.082 R)
• M22: 5,231,737 km (0.084 R)
• M23: 5,539,160 km (0.078 R)
• M24: 5,729,150 km (0.089 R)
• M25: 5,893,707 km (0.104 R)
• M26: 6,073,823 km (0.114 R)
• M27: 6,524,861 km (0.082 R)
• M28: 6,696,898 km (0.033 R)
• M29: 6,783,515 km (0.083 R)
• M30: 7,060,122 km (0.077 R)
• M31: 7,177,706 km (0.116 R)
• M32: 7,296,038 km (0.108 R)
• M33: 7,474,658 km (0.115 R)
• M34: 7,760,539 km (0.091 R)
• M35: 7,958,158 km (0.115 R)
• M36: 8,142,163 km (0.104 R)
• M37: 8,860,383 km (0.039 R)
• M38: 9,035,113 km (0.094 R)
• M39: 9,566,335 km (0.039 R)
• M40: 9,713,091 km (0.067 R)
• M41: 10,008,696 km (0.079 R)
• M42: 10,223,967 km (0.04 R)
• M43: 10,340,654 km (0.06 R)
• M44: 10,491,149 km (0.08 R)
• M45: 10,693,106 km (0.088 R)
• M46: 10,879,356 km (0.117 R)
• M47: 11,306,607 km (0.12 R)
• M48: 11,582,914 km (0.074 R)
• M49: 11,721,891 km (0.07 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 787.8

Radius: 13.1

Gravity: 4.59 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 2.58 AU - 3.3 AU

Year: 3419 Days

Day: 14.3 Hours

Environment

Temp: -208 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 34,826,274 km

• M1: 248,033 km (0.055 R)
• M2: 585,975 km (0.082 R)
• M3: 767,437 km (0.118 R)
• M4: 1,077,254 km (0.026 R)
• M5: 1,279,959 km (0.038 R)
• M6: 1,454,390 km (0.059 R)
• M7: 1,537,717 km (0.099 R)
• M8: 1,933,403 km (0.049 R)
• M9: 2,103,944 km (0.087 R)
• M10: 2,460,137 km (0.063 R)
• M11: 2,628,734 km (0.112 R)
• M12: 2,835,927 km (0.12 R)
• M13: 3,777,047 km (0.105 R)
• M14: 3,893,733 km (0.079 R)
• M15: 4,171,088 km (0.114 R)
• M16: 4,956,177 km (0.079 R)
• M17: 5,148,860 km (0.089 R)
• M18: 5,278,860 km (0.097 R)
• M19: 5,366,076 km (0.112 R)
• M20: 5,674,995 km (0.116 R)
• M21: 5,921,981 km (0.093 R)
• M22: 6,754,942 km (0.065 R)
• M23: 6,945,231 km (0.104 R)
• M24: 7,064,909 km (0.079 R)
• M25: 7,209,570 km (0.098 R)
• M26: 7,723,588 km (0.099 R)
• M27: 7,947,536 km (0.113 R)
• M28: 8,072,899 km (0.107 R)
• M29: 8,224,143 km (0.076 R)
• M30: 8,376,434 km (0.117 R)
• M31: 9,283,296 km (0.066 R)
• M32: 9,548,084 km (0.045 R)
• M33: 9,923,126 km (0.112 R)
• M34: 10,248,501 km (0.115 R)
• M35: 10,660,045 km (0.107 R)
• M36: 11,189,322 km (0.045 R)
• M37: 12,128,797 km (0.111 R)
• M38: 12,389,396 km (0.094 R)
• M39: 12,769,225 km (0.113 R)
• M40: 12,857,488 km (0.1 R)
• M41: 13,241,955 km (0.048 R)
• M42: 13,390,805 km (0.12 R)
• M43: 14,265,503 km (0.035 R)
• M44: 14,510,096 km (0.115 R)
• M45: 15,502,079 km (0.064 R)
• M46: 15,596,326 km (0.09 R)
• M47: 15,879,814 km (0.088 R)
• M48: 16,805,077 km (0.095 R)
• M49: 16,901,867 km (0.118 R)
• M50: 18,143,080 km (0.05 R)
• M51: 18,641,091 km (0.093 R)
• M52: 18,741,322 km (0.111 R)
• M53: 18,908,572 km (0.066 R)
• M54: 19,379,806 km (0.097 R)
• M55: 19,582,960 km (0.083 R)
• M56: 19,752,753 km (0.114 R)
• M57: 19,991,212 km (0.083 R)
• M58: 20,265,126 km (0.116 R)
• M59: 21,233,174 km (0.077 R)
• M60: 21,828,274 km (0.069 R)
• M61: 21,933,890 km (0.113 R)
• M62: 22,358,000 km (0.087 R)
• M63: 22,927,669 km (0.065 R)
• M64: 23,791,297 km (0.118 R)
• M65: 24,227,076 km (0.079 R)
• M66: 24,482,440 km (0.035 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.71 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 846.3

Radius: 3.4

Gravity: 73.21 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 6.92 AU - 10.5 AU

Year: 17435 Days

Day: 24.2 Hours

Environment

Temp: -235 °C

Axial Tilt: 157 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (88)

Outer Limit: 34,826,274 km

• M1: 68,665 km (0.049 R)
• M2: 105,915 km (0.077 R)
• M3: 285,283 km (0.047 R)
• M4: 488,736 km (0.084 R)
• M5: 1,219,821 km (0.082 R)
• M6: 1,247,945 km (0.055 R)
• M7: 1,421,329 km (0.068 R)
• M8: 1,571,675 km (0.115 R)
• M9: 1,633,310 km (0.03 R)
• M10: 2,086,442 km (0.036 R)
• M11: 2,397,007 km (0.093 R)
• M12: 2,908,482 km (0.066 R)
• M13: 4,987,743 km (0.037 R)
• M14: 5,587,331 km (0.105 R)
• M15: 5,634,305 km (0.08 R)
• M16: 6,553,284 km (0.078 R)
• M17: 7,157,061 km (0.11 R)
• M18: 7,517,443 km (0.042 R)
• M19: 7,936,616 km (0.089 R)
• M20: 8,742,649 km (0.119 R)
• M21: 8,797,402 km (0.111 R)
• M22: 11,611,188 km (0.073 R)
• M23: 12,832,655 km (0.098 R)
• M24: 12,956,971 km (0.059 R)
• M25: 13,144,267 km (0.103 R)
• M26: 15,328,995 km (0.05 R)
• M27: 15,859,020 km (0.114 R)
• M28: 15,925,741 km (0.11 R)
• M29: 15,992,611 km (0.074 R)
• M30: 17,761,306 km (0.084 R)
• M31: 19,448,172 km (0.092 R)
• M32: 20,093,836 km (0.081 R)
• M33: 20,600,824 km (0.112 R)
• M34: 22,896,253 km (0.106 R)
• M35: 23,577,672 km (0.048 R)
• M36: 23,959,146 km (0.055 R)
• M37: 27,083,199 km (0.076 R)
• M38: 28,206,379 km (0.03 R)
• M39: 30,167,159 km (0.085 R)
• M40: 30,996,978 km (0.097 R)
• M41: 31,750,203 km (0.119 R)
• M42: 31,834,277 km (0.09 R)
• M43: 34,131,951 km (0.108 R)
• M44: 34,390,606 km (0.079 R)
• M45: 34,476,924 km (0.03 R)
• M46: 34,563,391 km (0.109 R)
• M47: 35,170,160 km (0.085 R)
• M48: 36,306,655 km (0.068 R)
• M49: 38,346,422 km (0.098 R)
• M50: 38,794,767 km (0.117 R)
• M51: 39,878,005 km (0.049 R)
• M52: 40,150,273 km (0.102 R)
• M53: 40,332,184 km (0.044 R)
• M54: 40,423,140 km (0.073 R)
• M55: 41,062,521 km (0.106 R)
• M56: 42,258,556 km (0.112 R)
• M57: 42,443,609 km (0.099 R)
• M58: 43,465,961 km (0.098 R)
• M59: 44,590,637 km (0.1 R)
• M60: 46,200,161 km (0.109 R)
• M61: 48,698,296 km (0.09 R)
• M62: 48,795,235 km (0.086 R)
• M63: 49,280,979 km (0.051 R)
• M64: 49,670,682 km (0.088 R)
• M65: 51,733,636 km (0.118 R)
• M66: 52,328,138 km (0.076 R)
• M67: 52,825,402 km (0.11 R)
• M68: 53,124,448 km (0.117 R)
• M69: 54,728,885 km (0.074 R)
• M70: 55,132,350 km (0.042 R)
• M71: 56,654,658 km (0.029 R)
• M72: 58,499,499 km (0.104 R)
• M73: 58,808,868 km (0.099 R)
• M74: 59,844,085 km (0.034 R)
• M75: 60,676,597 km (0.069 R)
• M76: 60,780,867 km (0.066 R)
• M77: 60,885,286 km (0.089 R)
• M78: 61,722,585 km (0.057 R)
• M79: 63,302,788 km (0.113 R)
• M80: 63,514,469 km (0.059 R)
• M81: 65,430,219 km (0.088 R)
• M82: 67,149,099 km (0.026 R)
• M83: 68,122,382 km (0.092 R)
• M84: 70,740,644 km (0.119 R)
• M85: 71,180,312 km (0.068 R)
• M86: 72,062,042 km (0.077 R)
• M87: 73,058,514 km (0.12 R)
• M88: 73,502,819 km (0.206 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 80.2

Radius: 3.1

Gravity: 8.35 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 6.88 AU - 10.98 AU

Year: 18100 Days

Day: 18 Hours

Environment

Temp: -244 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 34,826,274 km

• M1: 63,429 km (0.066 R)
• M2: 84,224 km (0.092 R)
• M3: 159,920 km (0.082 R)
• M4: 415,882 km (0.082 R)
• M5: 463,005 km (0.032 R)
• M6: 524,490 km (0.102 R)
• M7: 588,668 km (0.087 R)
• M8: 696,677 km (0.101 R)
• M9: 855,401 km (0.075 R)
• M10: 1,009,337 km (0.04 R)
• M11: 1,188,555 km (0.068 R)
• M12: 1,239,119 km (0.098 R)
• M13: 1,307,635 km (0.116 R)
• M14: 1,342,491 km (0.077 R)
• M15: 1,430,754 km (0.037 R)
• M16: 1,557,613 km (0.095 R)
• M17: 1,631,664 km (0.102 R)
• M18: 1,669,063 km (0.106 R)
• M19: 1,860,848 km (0.119 R)
• M20: 1,919,789 km (0.118 R)
• M21: 2,563,509 km (0.038 R)
• M22: 2,607,192 km (0.078 R)
• M23: 2,829,195 km (0.105 R)
• M24: 2,896,963 km (0.12 R)
• M25: 3,173,420 km (0.06 R)
• M26: 3,243,880 km (0.076 R)
• M27: 3,628,197 km (0.034 R)
• M28: 3,875,782 km (0.109 R)
• M29: 3,951,029 km (0.098 R)
• M30: 4,386,958 km (0.068 R)
• M31: 4,623,921 km (0.065 R)
• M32: 4,677,177 km (0.118 R)
• M33: 4,892,000 km (0.119 R)
• M34: 5,359,344 km (0.067 R)
• M35: 5,984,962 km (0.053 R)
• M36: 6,693,308 km (0.078 R)
• M37: 7,490,216 km (0.093 R)
• M38: 7,709,825 km (0.097 R)
• M39: 8,348,908 km (0.117 R)
• M40: 8,740,405 km (0.041 R)
• M41: 8,938,473 km (0.1 R)
• M42: 9,847,579 km (0.119 R)
• M43: 10,053,725 km (0.105 R)
• M44: 10,750,552 km (0.114 R)
• M45: 10,891,922 km (0.088 R)
• M46: 11,463,086 km (0.12 R)
• M47: 12,007,323 km (0.118 R)
• M48: 12,153,780 km (0.075 R)
• M49: 12,264,183 km (0.099 R)
• M50: 12,671,388 km (0.113 R)
• M51: 12,783,288 km (0.098 R)
• M52: 13,196,178 km (0.072 R)
• M53: 13,423,267 km (0.109 R)
• M54: 13,575,408 km (0.085 R)
• M55: 13,613,556 km (0.083 R)
• M56: 13,689,851 km (0.103 R)
• M57: 13,727,998 km (0.075 R)
• M58: 14,035,123 km (0.076 R)
• M59: 14,189,508 km (0.112 R)
• M60: 15,564,013 km (0.119 R)
• M61: 15,643,898 km (0.103 R)
• M62: 15,763,876 km (0.074 R)
• M63: 15,844,060 km (0.111 R)
• M64: 15,884,152 km (0.045 R)
• M65: 16,368,401 km (0.102 R)
• M66: 16,530,864 km (0.071 R)
• M67: 17,558,452 km (0.114 R)
• M68: 17,808,131 km (0.101 R)
• M69: 17,891,606 km (0.116 R)
• M70: 18,268,892 km (0.106 R)
• M71: 18,395,302 km (0.087 R)
• M72: 18,522,012 km (0.108 R)
• M73: 18,691,207 km (0.035 R)
• M74: 19,116,813 km (0.078 R)
• M75: 19,245,018 km (0.058 R)
• M76: 19,459,541 km (0.076 R)
• M77: 19,847,449 km (0.09 R)
• M78: 20,020,683 km (0.038 R)
• M79: 20,456,013 km (0.111 R)
• M80: 23,223,873 km (0.114 R)
• M81: 25,258,104 km (0.04 R)
• M82: 25,398,876 km (0.09 R)
• M83: 25,634,044 km (0.109 R)
• M84: 25,964,506 km (0.095 R)
• M85: 26,153,897 km (0.104 R)
• M86: 26,820,654 km (0.1 R)
• M87: 27,782,868 km (0.045 R)
• M88: 28,560,627 km (0.09 R)
• M89: 28,805,220 km (0.082 R)
• M90: 29,099,628 km (0.111 R)
• M91: 29,691,288 km (0.083 R)
• M92: 29,889,505 km (0.091 R)
• M93: 30,436,584 km (0.095 R)
• M94: 31,389,373 km (0.105 R)
• M95: 34,253,873 km (0.082 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 343 - 20,139 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit