🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.47 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 930.5

Radius: 8.1

Gravity: 14.18 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.92 AU - 0.94 AU

Year: 608 Days

Day: 9.7 Hours

Environment

Temp: -175 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 62,029,999 km

• M1: 103,671 km (0.103 R)
• M2: 170,542 km (0.099 R)
• M3: 264,040 km (0.084 R)
• M4: 610,060 km (0.104 R)
• M5: 809,923 km (0.068 R)
• M6: 875,596 km (0.074 R)
• M7: 926,160 km (0.101 R)
• M8: 1,012,927 km (0.063 R)
• M9: 1,108,371 km (0.089 R)
• M10: 1,169,706 km (0.11 R)
• M11: 1,232,238 km (0.076 R)
• M12: 1,302,399 km (0.069 R)
• M13: 1,466,807 km (0.063 R)
• M14: 1,527,693 km (0.094 R)
• M15: 1,687,314 km (0.08 R)
• M16: 1,867,131 km (0.076 R)
• M17: 1,933,403 km (0.065 R)
• M18: 2,023,012 km (0.096 R)
• M19: 2,167,823 km (0.095 R)
• M20: 2,229,906 km (0.071 R)
• M21: 2,292,438 km (0.061 R)
• M22: 2,355,718 km (0.047 R)
• M23: 2,443,532 km (0.106 R)
• M24: 2,532,542 km (0.118 R)
• M25: 2,639,206 km (0.112 R)
• M26: 2,755,742 km (0.116 R)
• M27: 2,916,560 km (0.109 R)
• M28: 3,098,022 km (0.117 R)
• M29: 3,256,596 km (0.088 R)
• M30: 3,327,954 km (0.104 R)
• M31: 3,444,940 km (0.117 R)
• M32: 3,757,450 km (0.045 R)
• M33: 3,841,673 km (0.08 R)
• M34: 3,993,066 km (0.085 R)
• M35: 4,050,362 km (0.098 R)
• M36: 4,185,150 km (0.063 R)
• M37: 4,253,067 km (0.109 R)
• M38: 4,331,158 km (0.066 R)
• M39: 4,390,099 km (0.117 R)
• M40: 4,469,087 km (0.073 R)
• M41: 4,548,523 km (0.114 R)
• M42: 4,779,353 km (0.09 R)
• M43: 4,921,920 km (0.084 R)
• M44: 5,127,916 km (0.08 R)
• M45: 5,400,034 km (0.106 R)
• M46: 5,709,104 km (0.11 R)
• M47: 5,838,655 km (0.114 R)
• M48: 5,980,175 km (0.104 R)
• M49: 6,045,848 km (0.107 R)
• M50: 6,189,014 km (0.119 R)
• M51: 6,311,085 km (0.109 R)
• M52: 6,366,736 km (0.115 R)
• M53: 7,094,529 km (0.091 R)
• M54: 7,315,785 km (0.058 R)
• M55: 7,468,374 km (0.081 R)
• M56: 7,598,375 km (0.064 R)
• M57: 7,717,156 km (0.066 R)
• M58: 7,824,717 km (0.11 R)
• M59: 8,125,857 km (0.082 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 433.1

Radius: 10

Gravity: 4.33 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.83 AU - 1.93 AU

Year: 1748 Days

Day: 9.5 Hours

Environment

Temp: -208 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 62,029,999 km

• M1: 130,300 km (0.077 R)
• M2: 293,212 km (0.079 R)
• M3: 375,640 km (0.062 R)
• M4: 497,413 km (0.114 R)
• M5: 871,856 km (0.068 R)
• M6: 1,009,337 km (0.052 R)
• M7: 1,121,685 km (0.067 R)
• M8: 1,238,222 km (0.079 R)
• M9: 1,315,414 km (0.108 R)
• M10: 1,421,030 km (0.103 R)
• M11: 1,484,011 km (0.05 R)
• M12: 1,659,788 km (0.086 R)
• M13: 1,764,806 km (0.118 R)
• M14: 1,832,724 km (0.108 R)
• M15: 2,196,695 km (0.094 R)
• M16: 2,594,326 km (0.054 R)
• M17: 2,944,984 km (0.076 R)
• M18: 3,322,868 km (0.08 R)
• M19: 3,395,572 km (0.101 R)
• M20: 3,530,061 km (0.102 R)
• M21: 3,653,928 km (0.039 R)
• M22: 3,880,419 km (0.068 R)
• M23: 3,957,013 km (0.086 R)
• M24: 4,072,802 km (0.078 R)
• M25: 4,176,773 km (0.117 R)
• M26: 4,453,678 km (0.069 R)
• M27: 4,614,795 km (0.093 R)
• M28: 4,736,717 km (0.118 R)
• M29: 4,805,084 km (0.061 R)
• M30: 4,873,599 km (0.096 R)
• M31: 4,942,564 km (0.096 R)
• M32: 5,109,366 km (0.115 R)
• M33: 5,751,290 km (0.08 R)
• M34: 5,941,579 km (0.099 R)
• M35: 6,030,141 km (0.111 R)
• M36: 6,388,577 km (0.03 R)
• M37: 6,494,343 km (0.111 R)
• M38: 6,570,338 km (0.045 R)
• M39: 6,754,045 km (0.104 R)
• M40: 7,032,596 km (0.032 R)
• M41: 7,251,906 km (0.104 R)
• M42: 7,457,454 km (0.065 R)
• M43: 7,633,082 km (0.112 R)
• M44: 7,907,145 km (0.105 R)
• M45: 8,332,452 km (0.114 R)
• M46: 8,398,574 km (0.045 R)
• M47: 8,514,662 km (0.104 R)
• M48: 8,581,233 km (0.092 R)
• M49: 9,103,180 km (0.107 R)
• M50: 9,205,355 km (0.116 R)
• M51: 9,325,183 km (0.119 R)
• M52: 9,428,256 km (0.118 R)
• M53: 9,497,071 km (0.086 R)
• M54: 9,635,449 km (0.105 R)
• M55: 10,089,778 km (0.078 R)
• M56: 10,195,544 km (0.044 R)
• M57: 10,479,630 km (0.075 R)
• M58: 10,586,742 km (0.056 R)
• M59: 10,748,158 km (0.109 R)
• M60: 11,091,785 km (0.101 R)
• M61: 11,164,639 km (0.099 R)
• M62: 11,255,744 km (0.044 R)
• M63: 11,420,601 km (0.119 R)
• M64: 11,549,404 km (0.107 R)
• M65: 11,678,657 km (0.109 R)
• M66: 11,864,009 km (0.091 R)
• M67: 12,294,402 km (0.102 R)
• M68: 12,615,738 km (0.085 R)
• M69: 12,748,731 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 148.9

Radius: 11.3

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 1.72 AU - 2.44 AU

Year: 2035 Days

Day: 12.8 Hours

Environment

Temp: -195 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (54)

Outer Limit: 62,029,999 km

• M1: 142,118 km (0.091 R)
• M2: 216,169 km (0.098 R)
• M3: 311,014 km (0.075 R)
• M4: 559,346 km (0.1 R)
• M5: 683,213 km (0.115 R)
• M6: 787,334 km (0.051 R)
• M7: 884,871 km (0.107 R)
• M8: 1,113,607 km (0.087 R)
• M9: 1,274,574 km (0.075 R)
• M10: 1,398,740 km (0.043 R)
• M11: 1,550,283 km (0.077 R)
• M12: 1,651,860 km (0.119 R)
• M13: 1,723,517 km (0.109 R)
• M14: 1,837,062 km (0.03 R)
• M15: 2,012,391 km (0.108 R)
• M16: 2,149,721 km (0.063 R)
• M17: 2,424,832 km (0.12 R)
• M18: 2,844,753 km (0.084 R)
• M19: 2,921,796 km (0.08 R)
• M20: 3,048,505 km (0.068 R)
• M21: 3,227,125 km (0.065 R)
• M22: 3,307,759 km (0.085 R)
• M23: 3,388,990 km (0.065 R)
• M24: 3,605,309 km (0.054 R)
• M25: 4,051,858 km (0.094 R)
• M26: 4,215,668 km (0.088 R)
• M27: 4,504,841 km (0.089 R)
• M28: 4,617,787 km (0.056 R)
• M29: 4,835,003 km (0.106 R)
• M30: 5,032,323 km (0.06 R)
• M31: 5,102,634 km (0.035 R)
• M32: 5,244,153 km (0.115 R)
• M33: 5,410,955 km (0.09 R)
• M34: 5,519,114 km (0.096 R)
• M35: 5,640,139 km (0.115 R)
• M36: 5,971,349 km (0.106 R)
• M37: 6,283,859 km (0.095 R)
• M38: 6,372,271 km (0.064 R)
• M39: 6,588,889 km (0.05 R)
• M40: 6,898,706 km (0.08 R)
• M41: 7,016,290 km (0.098 R)
• M42: 7,187,131 km (0.119 R)
• M43: 7,506,073 km (0.096 R)
• M44: 7,816,339 km (0.108 R)
• M45: 7,952,473 km (0.105 R)
• M46: 8,048,216 km (0.104 R)
• M47: 8,449,288 km (0.095 R)
• M48: 8,589,012 km (0.061 R)
• M49: 8,913,490 km (0.063 R)
• M50: 9,070,119 km (0.081 R)
• M51: 9,170,200 km (0.086 R)
• M52: 9,458,475 km (0.108 R)
• M53: 9,647,417 km (0.095 R)
• M54: 9,925,669 km (0.026 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 354.2

Radius: 9

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 2.49 AU - 2.61 AU

Year: 2762 Days

Day: 10.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 62,029,999 km

• M1: 117,584 km (0.061 R)
• M2: 175,927 km (0.117 R)
• M3: 241,601 km (0.068 R)
• M4: 332,406 km (0.044 R)
• M5: 418,425 km (0.093 R)
• M6: 499,358 km (0.114 R)
• M7: 819,497 km (0.086 R)
• M8: 924,664 km (0.11 R)
• M9: 988,244 km (0.028 R)
• M10: 1,247,796 km (0.039 R)
• M11: 1,572,124 km (0.094 R)
• M12: 1,671,307 km (0.105 R)
• M13: 1,727,407 km (0.063 R)
• M14: 1,864,438 km (0.051 R)
• M15: 1,922,632 km (0.031 R)
• M16: 2,161,839 km (0.117 R)
• M17: 2,334,924 km (0.106 R)
• M18: 2,590,437 km (0.089 R)
• M19: 2,747,963 km (0.119 R)
• M20: 3,072,740 km (0.118 R)
• M21: 3,142,004 km (0.071 R)
• M22: 3,381,361 km (0.105 R)
• M23: 3,496,102 km (0.084 R)
• M24: 3,612,041 km (0.111 R)
• M25: 3,877,876 km (0.082 R)
• M26: 4,104,218 km (0.083 R)
• M27: 4,381,572 km (0.06 R)
• M28: 4,922,219 km (0.04 R)
• M29: 5,052,518 km (0.096 R)
• M30: 5,134,498 km (0.095 R)
• M31: 5,217,076 km (0.081 R)
• M32: 5,366,524 km (0.064 R)
• M33: 5,635,950 km (0.056 R)
• M34: 5,755,329 km (0.049 R)
• M35: 5,892,660 km (0.05 R)
• M36: 6,364,342 km (0.104 R)
• M37: 6,560,016 km (0.114 R)
• M38: 6,667,577 km (0.113 R)
• M39: 6,757,635 km (0.111 R)
• M40: 6,920,846 km (0.07 R)
• M41: 7,530,308 km (0.09 R)
• M42: 7,605,406 km (0.085 R)
• M43: 7,699,503 km (0.107 R)
• M44: 7,756,201 km (0.054 R)
• M45: 7,965,339 km (0.082 R)
• M46: 8,022,635 km (0.069 R)
• M47: 8,195,570 km (0.091 R)
• M48: 8,721,556 km (0.12 R)
• M49: 8,958,968 km (0.037 R)
• M50: 9,058,450 km (0.104 R)
• M51: 9,118,289 km (0.092 R)
• M52: 9,278,658 km (0.112 R)
• M53: 9,439,925 km (0.082 R)
• M54: 9,765,300 km (0.063 R)
• M55: 10,053,127 km (0.114 R)
• M56: 10,177,293 km (0.065 R)
• M57: 10,281,114 km (0.056 R)
• M58: 10,573,877 km (0.085 R)
• M59: 10,763,567 km (0.026 R)
• M60: 11,039,425 km (0.071 R)
• M61: 11,468,472 km (0.093 R)
• M62: 11,620,015 km (0.091 R)
• M63: 11,706,781 km (0.098 R)
• M64: 12,387,302 km (0.04 R)
• M65: 12,698,765 km (0.119 R)
• M66: 13,080,539 km (0.103 R)
• M67: 13,170,896 km (0.04 R)
• M68: 13,306,880 km (0.116 R)
• M69: 13,420,425 km (0.084 R)
• M70: 13,671,600 km (0.097 R)
• M71: 14,691,857 km (0.045 R)
• M72: 14,832,928 km (0.073 R)
• M73: 15,425,336 km (0.093 R)
• M74: 15,592,586 km (0.065 R)
• M75: 15,784,520 km (0.094 R)
• M76: 16,122,163 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 701.7

Radius: 11.3

Gravity: 5.5 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 4.43 AU - 5.13 AU

Year: 7088 Days

Day: 13 Hours

Environment

Temp: -230 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 62,029,999 km

• M1: 141,669 km (0.068 R)
• M2: 481,855 km (0.075 R)
• M3: 581,337 km (0.043 R)
• M4: 661,372 km (0.057 R)
• M5: 974,331 km (0.051 R)
• M6: 1,139,637 km (0.103 R)
• M7: 1,480,121 km (0.075 R)
• M8: 1,672,205 km (0.087 R)
• M9: 1,811,630 km (0.101 R)
• M10: 2,210,159 km (0.075 R)
• M11: 2,408,526 km (0.11 R)
• M12: 2,894,420 km (0.038 R)
• M13: 3,112,085 km (0.091 R)
• M14: 3,310,152 km (0.108 R)
• M15: 3,436,113 km (0.104 R)
• M16: 4,170,938 km (0.103 R)
• M17: 4,781,746 km (0.038 R)
• M18: 5,185,212 km (0.098 R)
• M19: 5,994,237 km (0.094 R)
• M20: 6,117,506 km (0.083 R)
• M21: 6,303,905 km (0.104 R)
• M22: 6,714,401 km (0.119 R)
• M23: 7,166,187 km (0.113 R)
• M24: 7,395,820 km (0.082 R)
• M25: 7,862,415 km (0.064 R)
• M26: 8,545,479 km (0.051 R)
• M27: 8,859,186 km (0.104 R)
• M28: 9,141,178 km (0.064 R)
• M29: 9,497,819 km (0.104 R)
• M30: 9,859,098 km (0.091 R)
• M31: 9,968,305 km (0.09 R)
• M32: 10,041,458 km (0.094 R)
• M33: 10,819,367 km (0.045 R)
• M34: 11,007,561 km (0.079 R)
• M35: 11,196,802 km (0.118 R)
• M36: 12,042,030 km (0.111 R)
• M37: 12,669,743 km (0.085 R)
• M38: 13,267,985 km (0.102 R)
• M39: 14,450,406 km (0.116 R)
• M40: 15,327,648 km (0.08 R)
• M41: 15,708,824 km (0.081 R)
• M42: 15,964,786 km (0.071 R)
• M43: 16,050,356 km (0.1 R)
• M44: 16,871,349 km (0.072 R)
• M45: 17,002,247 km (0.088 R)
• M46: 18,599,054 km (0.028 R)
• M47: 18,779,470 km (0.099 R)
• M48: 19,232,901 km (0.059 R)
• M49: 19,415,260 km (0.109 R)
• M50: 19,506,814 km (0.1 R)
• M51: 20,848,408 km (0.08 R)
• M52: 21,648,757 km (0.091 R)
• M53: 22,267,493 km (0.108 R)
• M54: 22,603,191 km (0.116 R)
• M55: 22,699,383 km (0.109 R)
• M56: 22,988,854 km (0.091 R)
• M57: 23,279,523 km (0.115 R)
• M58: 23,913,369 km (0.069 R)
• M59: 24,109,642 km (0.114 R)
• M60: 24,602,417 km (0.056 R)
• M61: 26,050,375 km (0.076 R)
• M62: 26,353,460 km (0.047 R)
• M63: 26,556,165 km (0.03 R)
• M64: 26,912,059 km (0.111 R)
• M65: 27,474,547 km (0.09 R)
• M66: 27,680,094 km (0.096 R)
• M67: 29,132,989 km (0.076 R)
• M68: 29,552,760 km (0.041 R)
• M69: 29,921,519 km (0.104 R)
• M70: 30,027,285 km (0.115 R)
• M71: 30,291,923 km (0.103 R)
• M72: 31,197,738 km (0.034 R)
• M73: 31,950,515 km (0.084 R)
• M74: 33,035,997 km (0.061 R)
• M75: 33,364,065 km (0.07 R)
• M76: 33,528,473 km (0.072 R)
• M77: 34,023,493 km (0.059 R)
• M78: 34,244,149 km (0.081 R)
• M79: 34,465,405 km (0.116 R)
• M80: 34,631,608 km (0.04 R)
• M81: 36,139,554 km (0.091 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 402.5

Radius: 3.9

Gravity: 26.46 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 7.83 AU - 10.75 AU

Year: 19205 Days

Day: 17.8 Hours

Environment

Temp: -241 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 62,029,999 km

• M1: 237,113 km (0.11 R)
• M2: 471,832 km (0.077 R)
• M3: 680,072 km (0.098 R)
• M4: 720,763 km (0.101 R)
• M5: 1,028,635 km (0.104 R)
• M6: 1,372,860 km (0.072 R)
• M7: 1,557,463 km (0.096 R)
• M8: 1,834,818 km (0.081 R)
• M9: 1,863,391 km (0.109 R)
• M10: 2,309,791 km (0.04 R)
• M11: 3,054,789 km (0.112 R)
• M12: 3,122,856 km (0.117 R)
• M13: 3,541,879 km (0.095 R)
• M14: 3,978,256 km (0.074 R)
• M15: 4,861,033 km (0.04 R)
• M16: 4,940,470 km (0.067 R)
• M17: 4,980,412 km (0.053 R)
• M18: 5,181,771 km (0.075 R)
• M19: 5,633,856 km (0.105 R)
• M20: 6,098,656 km (0.1 R)
• M21: 6,141,441 km (0.083 R)
• M22: 6,619,556 km (0.086 R)
• M23: 7,064,460 km (0.102 R)
• M24: 7,936,017 km (0.034 R)
• M25: 8,171,036 km (0.066 R)
• M26: 8,792,615 km (0.12 R)
• M27: 8,938,174 km (0.105 R)
• M28: 9,182,616 km (0.118 R)
• M29: 10,233,093 km (0.086 R)
• M30: 10,694,901 km (0.112 R)
• M31: 10,850,184 km (0.087 R)
• M32: 11,744,929 km (0.062 R)
• M33: 12,937,673 km (0.079 R)
• M34: 13,325,131 km (0.105 R)
• M35: 14,912,813 km (0.047 R)
• M36: 15,905,395 km (0.072 R)
• M37: 16,260,840 km (0.034 R)
• M38: 17,403,618 km (0.112 R)
• M39: 17,708,648 km (0.082 R)
• M40: 18,138,592 km (0.111 R)
• M41: 18,696,443 km (0.107 R)
• M42: 18,883,739 km (0.102 R)
• M43: 19,008,803 km (0.047 R)
• M44: 19,197,147 km (0.084 R)
• M45: 20,660,663 km (0.088 R)
• M46: 20,789,616 km (0.102 R)
• M47: 21,569,021 km (0.102 R)
• M48: 22,357,851 km (0.102 R)
• M49: 23,828,547 km (0.065 R)
• M50: 24,303,072 km (0.08 R)
• M51: 24,439,206 km (0.11 R)
• M52: 24,507,273 km (0.084 R)
• M53: 24,643,856 km (0.07 R)
• M54: 25,123,616 km (0.099 R)
• M55: 25,192,431 km (0.112 R)
• M56: 25,399,175 km (0.117 R)
• M57: 26,162,124 km (0.107 R)
• M58: 26,651,459 km (0.119 R)
• M59: 28,639,166 km (0.076 R)
• M60: 29,650,747 km (0.044 R)
• M61: 30,234,029 km (0.072 R)
• M62: 30,600,394 km (0.075 R)
• M63: 31,042,157 km (0.104 R)
• M64: 31,116,058 km (0.111 R)
• M65: 31,782,965 km (0.053 R)
• M66: 31,857,465 km (0.076 R)
• M67: 33,055,744 km (0.082 R)
• M68: 34,268,833 km (0.117 R)
• M69: 34,650,906 km (0.101 R)
• M70: 35,111,219 km (0.073 R)
• M71: 35,342,198 km (0.107 R)
• M72: 36,193,260 km (0.115 R)
• M73: 36,816,485 km (0.117 R)
• M74: 39,264,504 km (0.116 R)
• M75: 40,306,603 km (0.106 R)
• M76: 42,500,007 km (0.055 R)
• M77: 43,404,775 km (0.099 R)
• M78: 43,983,719 km (0.05 R)
• M79: 45,484,335 km (0.042 R)
• M80: 46,156,628 km (0.104 R)
• M81: 46,747,539 km (0.075 R)
• M82: 47,766,301 km (0.112 R)
• M83: 49,480,693 km (0.114 R)
• M84: 49,739,497 km (0.028 R)
• M85: 53,587,902 km (0.098 R)
• M86: 53,765,026 km (0.042 R)
• M87: 54,208,883 km (0.105 R)
• M88: 54,297,744 km (0.114 R)
• M89: 54,742,947 km (0.036 R)
• M90: 55,547,634 km (0.07 R)
• M91: 55,637,243 km (0.099 R)
• M92: 56,806,799 km (0.07 R)
• M93: 57,802,822 km (0.111 R)
• M94: 58,257,450 km (0.081 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 323 - 12,418 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit