🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.57

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.57 AU - 0.71 AU

Year: 190 Days

Day: 36.2 Hours

Environment

Temp: 133 °C

Axial Tilt: 13.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 68,630,790 km

• M1: 501,003 km (0.104 R)

Planet 2 - Terrestrial

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.57

Radius: 1.66

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 2.5 AU - 2.86 AU

Year: 1627 Days

Day: 35.6 Hours

Environment

Temp: -91 °C

Axial Tilt: 16.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 3.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 2.82 AU - 4.4 AU

Year: 2544 Days

Day: 30.6 Hours

Environment

Temp: -129 °C

Axial Tilt: 39.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 5.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 561.3

Radius: 10.1

Gravity: 5.5 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 5.1 AU - 5.88 AU

Year: 4770 Days

Day: 11.3 Hours

Environment

Temp: -149 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 68,630,790 km

• M1: 145,110 km (0.103 R)
• M2: 214,523 km (0.097 R)
• M3: 311,762 km (0.064 R)
• M4: 421,268 km (0.101 R)
• M5: 516,262 km (0.096 R)
• M6: 663,317 km (0.054 R)
• M7: 873,951 km (0.066 R)
• M8: 1,013,675 km (0.116 R)
• M9: 1,147,416 km (0.116 R)
• M10: 1,244,654 km (0.093 R)
• M11: 1,492,837 km (0.099 R)
• M12: 1,903,035 km (0.071 R)
• M13: 2,036,326 km (0.069 R)
• M14: 2,329,987 km (0.073 R)
• M15: 2,418,998 km (0.071 R)
• M16: 2,509,055 km (0.059 R)
• M17: 2,600,460 km (0.048 R)
• M18: 2,692,911 km (0.113 R)
• M19: 3,152,027 km (0.04 R)
• M20: 3,330,647 km (0.085 R)
• M21: 3,411,131 km (0.087 R)
• M22: 3,865,310 km (0.095 R)
• M23: 4,056,645 km (0.088 R)
• M24: 4,207,739 km (0.104 R)
• M25: 4,426,751 km (0.118 R)
• M26: 4,921,920 km (0.097 R)
• M27: 5,199,424 km (0.092 R)
• M28: 5,363,832 km (0.061 R)
• M29: 5,505,950 km (0.058 R)
• M30: 5,673,499 km (0.117 R)
• M31: 6,111,971 km (0.102 R)
• M32: 6,285,504 km (0.114 R)
• M33: 6,612,076 km (0.069 R)
• M34: 6,815,829 km (0.066 R)
• M35: 7,047,556 km (0.112 R)
• M36: 7,731,517 km (0.11 R)
• M37: 8,464,248 km (0.112 R)
• M38: 8,547,125 km (0.073 R)
• M39: 8,713,478 km (0.084 R)
• M40: 9,275,816 km (0.112 R)
• M41: 9,532,825 km (0.113 R)
• M42: 9,879,144 km (0.03 R)
• M43: 10,852,578 km (0.109 R)
• M44: 11,335,479 km (0.069 R)
• M45: 11,579,623 km (0.073 R)
• M46: 11,825,562 km (0.108 R)
• M47: 12,762,942 km (0.12 R)
• M48: 12,985,095 km (0.086 R)
• M49: 13,080,688 km (0.093 R)
• M50: 13,272,622 km (0.092 R)
• M51: 13,401,127 km (0.09 R)
• M52: 13,562,244 km (0.03 R)
• M53: 13,691,646 km (0.108 R)
• M54: 13,984,259 km (0.108 R)
• M55: 14,443,674 km (0.088 R)
• M56: 14,741,673 km (0.098 R)
• M57: 15,377,315 km (0.034 R)
• M58: 15,715,406 km (0.095 R)
• M59: 16,124,556 km (0.095 R)
• M60: 16,330,403 km (0.12 R)
• M61: 16,468,033 km (0.08 R)
• M62: 16,640,818 km (0.081 R)
• M63: 17,689,499 km (0.111 R)
• M64: 18,221,918 km (0.112 R)
• M65: 18,472,195 km (0.104 R)
• M66: 18,831,679 km (0.068 R)
• M67: 19,630,681 km (0.075 R)
• M68: 21,036,901 km (0.081 R)
• M69: 21,224,198 km (0.12 R)
• M70: 23,167,624 km (0.094 R)
• M71: 23,788,904 km (0.045 R)
• M72: 24,101,713 km (0.081 R)
• M73: 24,494,557 km (0.072 R)
• M74: 25,008,276 km (0.052 R)
• M75: 25,127,356 km (0.091 R)
• M76: 25,765,690 km (0.094 R)
• M77: 26,288,385 km (0.11 R)
• M78: 26,611,666 km (0.107 R)
• M79: 27,017,675 km (0.098 R)
• M80: 27,139,896 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 11.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 426.8

Radius: 13.2

Gravity: 2.45 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 8.99 AU - 13.05 AU

Year: 13567 Days

Day: 6 Hours

Environment

Temp: -172 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 68,630,790 km

• M1: 398,529 km (0.087 R)
• M2: 579,243 km (0.118 R)
• M3: 723,306 km (0.059 R)
• M4: 899,083 km (0.071 R)
• M5: 1,050,925 km (0.117 R)
• M6: 1,469,649 km (0.11 R)
• M7: 1,914,404 km (0.103 R)
• M8: 2,114,416 km (0.098 R)
• M9: 2,242,921 km (0.109 R)
• M10: 2,427,525 km (0.042 R)
• M11: 2,562,462 km (0.054 R)
• M12: 2,727,768 km (0.105 R)
• M13: 3,127,643 km (0.079 R)
• M14: 3,334,686 km (0.051 R)
• M15: 3,888,049 km (0.115 R)
• M16: 3,983,193 km (0.119 R)
• M17: 4,371,399 km (0.073 R)
• M18: 4,771,873 km (0.083 R)
• M19: 4,942,265 km (0.095 R)
• M20: 5,045,487 km (0.118 R)
• M21: 5,149,458 km (0.045 R)
• M22: 5,933,949 km (0.111 R)
• M23: 6,793,987 km (0.101 R)
• M24: 7,336,579 km (0.093 R)
• M25: 8,670,543 km (0.072 R)
• M26: 8,753,869 km (0.045 R)
• M27: 9,005,193 km (0.118 R)
• M28: 9,644,126 km (0.046 R)
• M29: 10,831,185 km (0.109 R)
• M30: 10,965,823 km (0.069 R)
• M31: 11,328,000 km (0.105 R)
• M32: 12,343,919 km (0.117 R)
• M33: 12,673,184 km (0.069 R)
• M34: 13,873,258 km (0.057 R)
• M35: 14,166,619 km (0.101 R)
• M36: 14,809,441 km (0.054 R)
• M37: 15,159,500 km (0.052 R)
• M38: 16,123,509 km (0.112 R)
• M39: 16,846,515 km (0.109 R)
• M40: 17,632,951 km (0.09 R)
• M41: 19,024,361 km (0.094 R)
• M42: 19,459,541 km (0.11 R)
• M43: 20,118,520 km (0.078 R)
• M44: 20,229,073 km (0.105 R)
• M45: 20,952,678 km (0.096 R)
• M46: 22,367,724 km (0.036 R)
• M47: 22,942,479 km (0.102 R)
• M48: 23,231,652 km (0.111 R)
• M49: 23,522,021 km (0.057 R)
• M50: 26,491,689 km (0.077 R)
• M51: 26,916,846 km (0.109 R)
• M52: 29,138,673 km (0.094 R)
• M53: 29,263,887 km (0.101 R)
• M54: 29,892,347 km (0.091 R)
• M55: 30,716,033 km (0.071 R)
• M56: 31,611,526 km (0.084 R)
• M57: 32,256,293 km (0.088 R)
• M58: 32,515,396 km (0.086 R)
• M59: 32,970,623 km (0.109 R)
• M60: 33,231,671 km (0.09 R)
• M61: 33,755,862 km (0.111 R)
• M62: 34,348,868 km (0.055 R)
• M63: 34,945,315 km (0.075 R)
• M64: 35,545,202 km (0.05 R)
• M65: 36,215,700 km (0.11 R)
• M66: 36,417,657 km (0.072 R)
• M67: 36,619,913 km (0.072 R)
• M68: 36,958,004 km (0.104 R)
• M69: 37,637,328 km (0.112 R)
• M70: 40,395,464 km (0.088 R)
• M71: 41,657,621 km (0.108 R)
• M72: 42,506,440 km (0.116 R)
• M73: 44,364,745 km (0.076 R)
• M74: 45,376,475 km (0.108 R)
• M75: 45,594,289 km (0.117 R)
• M76: 46,103,670 km (0.099 R)
• M77: 46,908,208 km (0.108 R)
• M78: 48,382,644 km (0.114 R)
• M79: 49,573,294 km (0.095 R)
• M80: 50,022,237 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 11.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 227.8

Radius: 13.4

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 10.1 AU - 13.64 AU

Year: 15166 Days

Day: 12.7 Hours

Environment

Temp: -185 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 68,630,790 km

• M1: 272,119 km (0.089 R)
• M2: 452,534 km (0.068 R)
• M3: 569,669 km (0.045 R)
• M4: 654,939 km (0.094 R)
• M5: 808,427 km (0.1 R)
• M6: 1,063,641 km (0.052 R)
• M7: 1,267,992 km (0.091 R)
• M8: 2,237,236 km (0.104 R)
• M9: 2,780,127 km (0.102 R)
• M10: 3,254,651 km (0.103 R)
• M11: 3,473,962 km (0.084 R)
• M12: 3,585,412 km (0.065 R)
• M13: 5,756,975 km (0.049 R)
• M14: 5,889,519 km (0.115 R)
• M15: 7,667,788 km (0.081 R)
• M16: 7,961,000 km (0.085 R)
• M17: 8,824,479 km (0.081 R)
• M18: 9,209,095 km (0.064 R)
• M19: 9,364,677 km (0.117 R)
• M20: 10,925,731 km (0.106 R)
• M21: 11,131,727 km (0.041 R)
• M22: 11,255,893 km (0.076 R)
• M23: 11,547,609 km (0.098 R)
• M24: 11,799,532 km (0.118 R)
• M25: 12,180,857 km (0.067 R)
• M26: 13,174,037 km (0.085 R)
• M27: 13,658,136 km (0.117 R)
• M28: 14,058,759 km (0.077 R)
• M29: 14,237,977 km (0.116 R)
• M30: 14,327,886 km (0.107 R)
• M31: 14,598,807 km (0.077 R)
• M32: 15,375,520 km (0.118 R)
• M33: 15,560,123 km (0.094 R)
• M34: 15,838,675 km (0.048 R)
• M35: 16,259,493 km (0.112 R)
• M36: 16,447,687 km (0.093 R)
• M37: 16,969,036 km (0.108 R)
• M38: 17,351,558 km (0.041 R)
• M39: 17,737,072 km (0.114 R)
• M40: 18,028,039 km (0.073 R)
• M41: 18,467,408 km (0.06 R)
• M42: 18,959,735 km (0.094 R)
• M43: 19,456,549 km (0.081 R)
• M44: 19,857,023 km (0.093 R)
• M45: 20,361,467 km (0.064 R)
• M46: 20,717,061 km (0.03 R)
• M47: 21,485,994 km (0.067 R)
• M48: 21,589,217 km (0.067 R)
• M49: 22,316,562 km (0.082 R)
• M50: 22,473,490 km (0.093 R)
• M51: 22,893,710 km (0.105 R)
• M52: 24,223,635 km (0.109 R)
• M53: 24,492,612 km (0.054 R)
• M54: 25,523,790 km (0.032 R)
• M55: 25,687,899 km (0.075 R)
• M56: 26,513,829 km (0.112 R)
• M57: 26,846,684 km (0.111 R)
• M58: 27,013,636 km (0.1 R)
• M59: 27,965,976 km (0.084 R)
• M60: 28,588,153 km (0.074 R)
• M61: 28,815,542 km (0.065 R)
• M62: 30,192,441 km (0.06 R)
• M63: 32,061,367 km (0.108 R)
• M64: 32,297,582 km (0.048 R)
• M65: 33,009,817 km (0.074 R)
• M66: 33,248,426 km (0.116 R)
• M67: 33,787,277 km (0.078 R)
• M68: 34,389,409 km (0.054 R)
• M69: 35,299,413 km (0.106 R)
• M70: 36,771,605 km (0.079 R)
• M71: 36,895,173 km (0.063 R)
• M72: 39,966,268 km (0.046 R)
• M73: 40,411,621 km (0.028 R)
• M74: 40,858,769 km (0.077 R)
• M75: 41,114,880 km (0.098 R)
• M76: 41,564,572 km (0.096 R)
• M77: 42,145,011 km (0.116 R)
• M78: 42,533,517 km (0.111 R)
• M79: 43,053,370 km (0.078 R)
• M80: 43,248,894 km (0.115 R)

Planet 7 - Ice Giant

Semi-Major Axis: 12.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 183.1

Radius: 7.2

Gravity: 3.53 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 9.8 AU - 15.36 AU

Year: 16547 Days

Day: 19.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (88)

Outer Limit: 68,630,790 km

• M1: 96,640 km (0.057 R)
• M2: 153,487 km (0.113 R)
• M3: 220,657 km (0.071 R)
• M4: 313,557 km (0.102 R)
• M5: 447,447 km (0.079 R)
• M6: 501,003 km (0.071 R)
• M7: 571,464 km (0.077 R)
• M8: 1,028,635 km (0.106 R)
• M9: 1,139,038 km (0.095 R)
• M10: 1,514,529 km (0.103 R)
• M11: 1,619,547 km (0.116 R)
• M12: 1,705,266 km (0.104 R)
• M13: 1,903,932 km (0.115 R)
• M14: 2,519,079 km (0.101 R)
• M15: 2,771,151 km (0.072 R)
• M16: 3,084,409 km (0.09 R)
• M17: 3,164,444 km (0.084 R)
• M18: 3,272,453 km (0.043 R)
• M19: 3,945,195 km (0.073 R)
• M20: 4,417,027 km (0.101 R)
• M21: 4,598,489 km (0.119 R)
• M22: 5,126,270 km (0.105 R)
• M23: 5,477,975 km (0.111 R)
• M24: 5,607,826 km (0.058 R)
• M25: 6,442,133 km (0.078 R)
• M26: 6,752,100 km (0.036 R)
• M27: 7,746,926 km (0.1 R)
• M28: 8,261,393 km (0.081 R)
• M29: 8,597,988 km (0.075 R)
• M30: 8,748,932 km (0.061 R)
• M31: 9,245,896 km (0.091 R)
• M32: 10,028,293 km (0.082 R)
• M33: 10,467,513 km (0.076 R)
• M34: 10,994,845 km (0.08 R)
• M35: 11,241,083 km (0.115 R)
• M36: 11,447,827 km (0.103 R)
• M37: 11,990,868 km (0.097 R)
• M38: 12,159,764 km (0.04 R)
• M39: 12,542,435 km (0.05 R)
• M40: 12,972,379 km (0.092 R)
• M41: 14,335,515 km (0.115 R)
• M42: 14,739,729 km (0.038 R)
• M43: 14,830,086 km (0.077 R)
• M44: 15,238,787 km (0.087 R)
• M45: 15,559,375 km (0.102 R)
• M46: 15,651,378 km (0.08 R)
• M47: 15,882,058 km (0.063 R)
• M48: 17,433,238 km (0.077 R)
• M49: 17,624,574 km (0.115 R)
• M50: 18,542,656 km (0.098 R)
• M51: 18,884,936 km (0.084 R)
• M52: 19,032,140 km (0.097 R)
• M53: 19,278,528 km (0.118 R)
• M54: 19,873,928 km (0.078 R)
• M55: 20,525,875 km (0.093 R)
• M56: 21,082,978 km (0.097 R)
• M57: 21,389,055 km (0.102 R)
• M58: 22,679,636 km (0.093 R)
• M59: 22,731,845 km (0.081 R)
• M60: 22,784,055 km (0.089 R)
• M61: 23,308,096 km (0.116 R)
• M62: 23,413,413 km (0.101 R)
• M63: 24,261,483 km (0.051 R)
• M64: 25,498,209 km (0.043 R)
• M65: 26,535,222 km (0.112 R)
• M66: 26,700,228 km (0.117 R)
• M67: 27,363,545 km (0.119 R)
• M68: 27,920,647 km (0.062 R)
• M69: 28,032,397 km (0.096 R)
• M70: 28,312,743 km (0.059 R)
• M71: 28,537,589 km (0.116 R)
• M72: 30,013,671 km (0.119 R)
• M73: 30,128,263 km (0.088 R)
• M74: 30,357,896 km (0.061 R)
• M75: 31,108,129 km (0.114 R)
• M76: 31,340,156 km (0.094 R)
• M77: 33,039,737 km (0.112 R)
• M78: 33,276,550 km (0.058 R)
• M79: 33,573,203 km (0.116 R)
• M80: 34,889,365 km (0.057 R)
• M81: 36,711,168 km (0.077 R)
• M82: 38,128,608 km (0.116 R)
• M83: 39,313,124 km (0.098 R)
• M84: 39,438,487 km (0.039 R)
• M85: 39,501,168 km (0.103 R)
• M86: 40,699,597 km (0.117 R)
• M87: 41,781,937 km (0.105 R)
• M88: 42,037,899 km (0.037 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 471.7

Radius: 6.9

Gravity: 9.91 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 11.49 AU - 17.67 AU

Year: 20646 Days

Day: 17.3 Hours

Environment

Temp: -183 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 68,630,790 km

• M1: 459,864 km (0.093 R)
• M2: 740,210 km (0.086 R)
• M3: 806,632 km (0.085 R)
• M4: 1,410,110 km (0.097 R)
• M5: 1,522,009 km (0.083 R)
• M6: 3,006,768 km (0.047 R)
• M7: 3,676,368 km (0.085 R)
• M8: 3,909,740 km (0.077 R)
• M9: 3,988,578 km (0.041 R)
• M10: 4,228,234 km (0.07 R)
• M11: 4,721,758 km (0.114 R)
• M12: 4,975,326 km (0.083 R)
• M13: 5,233,382 km (0.091 R)
• M14: 5,495,927 km (0.067 R)
• M15: 5,584,339 km (0.03 R)
• M16: 5,988,253 km (0.062 R)
• M17: 6,262,765 km (0.062 R)
• M18: 7,062,665 km (0.096 R)
• M19: 7,207,177 km (0.096 R)
• M20: 7,548,260 km (0.082 R)
• M21: 7,894,429 km (0.101 R)
• M22: 8,145,006 km (0.108 R)
• M23: 8,195,420 km (0.114 R)
• M24: 9,330,868 km (0.105 R)
• M25: 9,436,484 km (0.065 R)
• M26: 10,405,280 km (0.053 R)
• M27: 10,569,688 km (0.109 R)
• M28: 13,735,029 km (0.077 R)
• M29: 13,795,168 km (0.102 R)
• M30: 15,263,172 km (0.109 R)
• M31: 18,411,010 km (0.077 R)
• M32: 18,543,554 km (0.05 R)
• M33: 18,609,975 km (0.081 R)
• M34: 19,480,934 km (0.088 R)
• M35: 19,683,789 km (0.112 R)
• M36: 21,890,806 km (0.113 R)
• M37: 21,960,967 km (0.087 R)
• M38: 22,454,640 km (0.056 R)
• M39: 22,738,428 km (0.116 R)
• M40: 22,809,487 km (0.108 R)
• M41: 23,596,671 km (0.079 R)
• M42: 24,830,853 km (0.104 R)
• M43: 25,050,762 km (0.073 R)
• M44: 25,124,214 km (0.11 R)
• M45: 26,011,330 km (0.035 R)
• M46: 26,984,015 km (0.115 R)
• M47: 27,436,848 km (0.084 R)
• M48: 28,426,737 km (0.094 R)
• M49: 28,964,691 km (0.074 R)
• M50: 29,894,591 km (0.088 R)
• M51: 31,307,693 km (0.053 R)
• M52: 32,501,783 km (0.096 R)
• M53: 32,822,670 km (0.06 R)
• M54: 34,524,795 km (0.119 R)
• M55: 34,606,625 km (0.11 R)
• M56: 35,180,782 km (0.093 R)
• M57: 35,345,489 km (0.098 R)
• M58: 38,861,488 km (0.114 R)
• M59: 39,202,122 km (0.108 R)
• M60: 39,714,944 km (0.088 R)
• M61: 40,488,365 km (0.09 R)
• M62: 40,660,851 km (0.119 R)
• M63: 44,607,093 km (0.087 R)
• M64: 45,053,044 km (0.073 R)
• M65: 45,679,859 km (0.074 R)
• M66: 46,761,153 km (0.097 R)
• M67: 48,215,843 km (0.067 R)
• M68: 49,777,794 km (0.091 R)
• M69: 49,962,547 km (0.074 R)
• M70: 51,636,398 km (0.094 R)
• M71: 52,010,841 km (0.105 R)
• M72: 53,423,195 km (0.086 R)
• M73: 53,707,132 km (0.088 R)
• M74: 54,943,408 km (0.077 R)
• M75: 55,230,038 km (0.102 R)
• M76: 55,900,685 km (0.071 R)
• M77: 56,960,137 km (0.06 R)
• M78: 57,347,147 km (0.084 R)
• M79: 59,883,130 km (0.039 R)
• M80: 63,654,941 km (0.111 R)
• M81: 65,367,089 km (0.117 R)
• M82: 67,196,372 km (0.112 R)
• M83: 67,298,547 km (0.096 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 209 - 13,738 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit