🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.3

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.45 AU - 0.63 AU

Year: 260 Days

Day: 45.9 Hours

Environment

Temp: -121 °C

Axial Tilt: 84.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 29,449,857 km

• M1: 47,423 km (0.03 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.85

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.52 AU - 0.78 AU

Year: 344 Days

Day: 18.4 Hours

Environment

Temp: -140 °C

Axial Tilt: 47.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 507.6

Radius: 9.4

Gravity: 5.74 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.58 AU - 0.82 AU

Year: 384 Days

Day: 8.4 Hours

Environment

Temp: -146 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 29,449,857 km

• M1: 119,678 km (0.111 R)
• M2: 179,069 km (0.109 R)
• M3: 251,474 km (0.067 R)
• M4: 340,335 km (0.09 R)
• M5: 416,929 km (0.056 R)
• M6: 476,020 km (0.106 R)
• M7: 535,261 km (0.105 R)
• M8: 611,107 km (0.073 R)
• M9: 690,993 km (0.096 R)
• M10: 842,834 km (0.092 R)
• M11: 925,113 km (0.056 R)
• M12: 1,002,007 km (0.1 R)
• M13: 1,175,839 km (0.109 R)
• M14: 1,295,817 km (0.058 R)
• M15: 1,387,371 km (0.087 R)
• M16: 1,485,956 km (0.052 R)
• M17: 1,626,129 km (0.113 R)
• M18: 1,715,439 km (0.068 R)
• M19: 1,786,049 km (0.111 R)
• M20: 1,898,995 km (0.09 R)
• M21: 2,132,218 km (0.103 R)
• M22: 2,241,275 km (0.113 R)
• M23: 2,369,032 km (0.114 R)
• M24: 2,539,573 km (0.057 R)
• M25: 2,690,518 km (0.084 R)
• M26: 2,749,459 km (0.092 R)
• M27: 2,820,668 km (0.104 R)
• M28: 2,977,297 km (0.102 R)
• M29: 3,074,984 km (0.099 R)
• M30: 3,229,968 km (0.077 R)
• M31: 3,292,649 km (0.088 R)
• M32: 3,362,212 km (0.065 R)
• M33: 3,438,507 km (0.047 R)
• M34: 3,625,504 km (0.104 R)
• M35: 3,875,632 km (0.072 R)
• M36: 3,975,863 km (0.118 R)
• M37: 4,097,336 km (0.056 R)
• M38: 4,254,414 km (0.065 R)
• M39: 4,371,848 km (0.106 R)
• M40: 4,504,392 km (0.116 R)
• M41: 4,567,522 km (0.076 R)
• M42: 4,659,375 km (0.106 R)
• M43: 4,794,761 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 102.1

Radius: 13.4

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.68 AU - 0.82 AU

Year: 426 Days

Day: 5.8 Hours

Environment

Temp: -132 °C

Axial Tilt: 26.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 29,449,857 km

• M1: 167,101 km (0.118 R)
• M2: 255,214 km (0.03 R)
• M3: 347,366 km (0.106 R)
• M4: 507,286 km (0.033 R)
• M5: 608,265 km (0.067 R)
• M6: 710,141 km (0.078 R)
• M7: 824,284 km (0.081 R)
• M8: 933,940 km (0.087 R)
• M9: 1,019,958 km (0.114 R)
• M10: 1,108,969 km (0.111 R)
• M11: 1,235,080 km (0.08 R)
• M12: 1,363,285 km (0.099 R)
• M13: 1,465,910 km (0.033 R)
• M14: 1,574,667 km (0.112 R)
• M15: 1,689,858 km (0.045 R)
• M16: 1,977,684 km (0.113 R)
• M17: 2,309,342 km (0.075 R)
• M18: 2,405,085 km (0.064 R)
• M19: 2,543,164 km (0.101 R)
• M20: 2,629,931 km (0.119 R)
• M21: 2,730,161 km (0.098 R)
• M22: 2,887,389 km (0.107 R)
• M23: 3,008,413 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 89.2

Radius: 14.9

Gravity: 0.4 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 0.83 AU - 0.83 AU

Year: 496 Days

Day: 9 Hours

Environment

Temp: -153 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 29,449,857 km

• M1: 186,698 km (0.082 R)
• M2: 284,685 km (0.041 R)
• M3: 470,485 km (0.083 R)
• M4: 590,912 km (0.03 R)
• M5: 780,003 km (0.118 R)
• M6: 939,026 km (0.068 R)
• M7: 1,054,815 km (0.061 R)
• M8: 1,147,715 km (0.113 R)
• M9: 1,253,331 km (0.093 R)
• M10: 1,355,806 km (0.118 R)
• M11: 1,492,688 km (0.108 R)
• M12: 1,598,453 km (0.092 R)
• M13: 1,758,673 km (0.107 R)
• M14: 1,916,798 km (0.088 R)
• M15: 2,060,262 km (0.109 R)
• M16: 2,203,427 km (0.083 R)
• M17: 2,657,756 km (0.113 R)
• M18: 2,753,050 km (0.101 R)
• M19: 2,885,145 km (0.105 R)
• M20: 3,019,184 km (0.097 R)
• M21: 3,123,604 km (0.053 R)
• M22: 3,219,795 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 428.1

Radius: 12.7

Gravity: 2.65 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.92 AU - 1.5 AU

Year: 873 Days

Day: 12.9 Hours

Environment

Temp: -178 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (52)

Outer Limit: 29,449,857 km

• M1: 162,613 km (0.042 R)
• M2: 254,466 km (0.085 R)
• M3: 400,473 km (0.087 R)
• M4: 486,642 km (0.064 R)
• M5: 599,139 km (0.117 R)
• M6: 688,001 km (0.12 R)
• M7: 881,281 km (0.087 R)
• M8: 1,001,857 km (0.104 R)
• M9: 1,128,716 km (0.11 R)
• M10: 1,218,475 km (0.096 R)
• M11: 1,335,909 km (0.102 R)
• M12: 1,431,352 km (0.09 R)
• M13: 1,562,699 km (0.118 R)
• M14: 1,830,629 km (0.105 R)
• M15: 1,937,741 km (0.081 R)
• M16: 2,046,948 km (0.11 R)
• M17: 2,318,019 km (0.117 R)
• M18: 2,529,102 km (0.115 R)
• M19: 2,681,542 km (0.093 R)
• M20: 3,038,034 km (0.103 R)
• M21: 3,123,155 km (0.096 R)
• M22: 3,209,174 km (0.034 R)
• M23: 3,304,617 km (0.119 R)
• M24: 3,498,496 km (0.115 R)
• M25: 3,605,907 km (0.11 R)
• M26: 3,732,616 km (0.119 R)
• M27: 4,093,447 km (0.11 R)
• M28: 4,178,269 km (0.06 R)
• M29: 4,533,563 km (0.072 R)
• M30: 4,719,962 km (0.056 R)
• M31: 4,809,123 km (0.093 R)
• M32: 4,888,858 km (0.112 R)
• M33: 4,969,043 km (0.12 R)
• M34: 5,069,872 km (0.047 R)
• M35: 5,151,103 km (0.101 R)
• M36: 5,232,634 km (0.098 R)
• M37: 5,355,903 km (0.071 R)
• M38: 5,480,219 km (0.094 R)
• M39: 5,678,885 km (0.084 R)
• M40: 5,805,744 km (0.119 R)
• M41: 5,954,743 km (0.089 R)
• M42: 6,322,156 km (0.106 R)
• M43: 6,453,652 km (0.047 R)
• M44: 6,641,397 km (0.077 R)
• M45: 6,775,138 km (0.025 R)
• M46: 6,898,407 km (0.111 R)
• M47: 7,011,203 km (0.09 R)
• M48: 7,341,815 km (0.082 R)
• M49: 7,491,712 km (0.091 R)
• M50: 7,654,175 km (0.1 R)
• M51: 7,794,498 km (0.069 R)
• M52: 7,876,627 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 881.3

Radius: 14.8

Gravity: 4.02 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 1.9 AU - 3.04 AU

Year: 2547 Days

Day: 6.4 Hours

Environment

Temp: -195 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (65)

Outer Limit: 29,449,857 km

• M1: 189,241 km (0.036 R)
• M2: 356,342 km (0.117 R)
• M3: 552,166 km (0.091 R)
• M4: 716,873 km (0.093 R)
• M5: 830,717 km (0.097 R)
• M6: 1,068,727 km (0.082 R)
• M7: 1,168,359 km (0.071 R)
• M8: 1,450,950 km (0.083 R)
• M9: 1,626,428 km (0.089 R)
• M10: 1,730,099 km (0.083 R)
• M11: 1,862,942 km (0.107 R)
• M12: 2,253,692 km (0.072 R)
• M13: 2,489,009 km (0.045 R)
• M14: 2,686,329 km (0.114 R)
• M15: 2,794,787 km (0.109 R)
• M16: 3,064,363 km (0.069 R)
• M17: 3,392,880 km (0.092 R)
• M18: 3,612,489 km (0.065 R)
• M19: 3,871,892 km (0.086 R)
• M20: 4,209,534 km (0.118 R)
• M21: 4,427,798 km (0.116 R)
• M22: 4,724,600 km (0.081 R)
• M23: 5,475,581 km (0.111 R)
• M24: 5,875,456 km (0.06 R)
• M25: 6,017,574 km (0.095 R)
• M26: 6,305,550 km (0.093 R)
• M27: 7,088,246 km (0.108 R)
• M28: 7,370,537 km (0.049 R)
• M29: 7,723,289 km (0.087 R)
• M30: 7,991,369 km (0.053 R)
• M31: 8,445,249 km (0.084 R)
• M32: 8,675,330 km (0.111 R)
• M33: 8,907,656 km (0.105 R)
• M34: 9,094,803 km (0.115 R)
• M35: 9,283,445 km (0.038 R)
• M36: 9,497,221 km (0.082 R)
• M37: 9,712,492 km (0.074 R)
• M38: 9,881,239 km (0.116 R)
• M39: 10,763,866 km (0.051 R)
• M40: 10,963,579 km (0.098 R)
• M41: 11,240,036 km (0.107 R)
• M42: 11,341,164 km (0.078 R)
• M43: 11,442,592 km (0.083 R)
• M44: 12,186,991 km (0.091 R)
• M45: 12,343,021 km (0.045 R)
• M46: 12,683,207 km (0.029 R)
• M47: 12,841,332 km (0.099 R)
• M48: 13,399,930 km (0.041 R)
• M49: 13,587,825 km (0.09 R)
• M50: 13,695,685 km (0.073 R)
• M51: 13,912,153 km (0.05 R)
• M52: 14,789,395 km (0.092 R)
• M53: 15,011,548 km (0.094 R)
• M54: 15,882,806 km (0.074 R)
• M55: 16,453,671 km (0.119 R)
• M56: 17,002,247 km (0.103 R)
• M57: 17,821,594 km (0.077 R)
• M58: 17,998,868 km (0.113 R)
• M59: 18,414,750 km (0.091 R)
• M60: 18,623,888 km (0.12 R)
• M61: 18,954,050 km (0.055 R)
• M62: 19,437,999 km (0.119 R)
• M63: 19,681,395 km (0.087 R)
• M64: 20,017,841 km (0.081 R)
• M65: 20,356,231 km (0.03 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 282.6

Radius: 10.8

Gravity: 2.42 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 2.43 AU - 2.67 AU

Year: 2671 Days

Day: 7.8 Hours

Environment

Temp: -203 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 29,449,857 km

• M1: 169,794 km (0.113 R)
• M2: 265,087 km (0.088 R)
• M3: 377,286 km (0.09 R)
• M4: 447,746 km (0.118 R)
• M5: 598,092 km (0.107 R)
• M6: 721,211 km (0.083 R)
• M7: 910,752 km (0.059 R)
• M8: 1,020,706 km (0.118 R)
• M9: 1,144,274 km (0.104 R)
• M10: 1,244,953 km (0.074 R)
• M11: 1,576,014 km (0.09 R)
• M12: 1,720,525 km (0.094 R)
• M13: 1,815,819 km (0.117 R)
• M14: 2,011,792 km (0.095 R)
• M15: 2,180,539 km (0.108 R)
• M16: 2,249,354 km (0.088 R)
• M17: 2,330,585 km (0.079 R)
• M18: 2,401,046 km (0.108 R)
• M19: 2,629,033 km (0.092 R)
• M20: 2,801,669 km (0.103 R)
• M21: 3,080,519 km (0.081 R)
• M22: 3,844,516 km (0.093 R)
• M23: 4,709,939 km (0.071 R)
• M24: 5,042,047 km (0.08 R)
• M25: 5,226,501 km (0.118 R)
• M26: 5,381,933 km (0.026 R)
• M27: 5,523,153 km (0.098 R)
• M28: 5,793,178 km (0.107 R)
• M29: 5,937,988 km (0.115 R)
• M30: 6,247,506 km (0.114 R)
• M31: 6,429,118 km (0.099 R)
• M32: 6,512,295 km (0.081 R)
• M33: 6,730,109 km (0.098 R)
• M34: 7,087,349 km (0.1 R)
• M35: 7,173,218 km (0.077 R)
• M36: 7,311,446 km (0.052 R)
• M37: 7,398,363 km (0.077 R)
• M38: 7,820,079 km (0.105 R)
• M39: 8,033,854 km (0.057 R)
• M40: 8,430,887 km (0.045 R)
• M41: 8,576,895 km (0.1 R)
• M42: 8,852,903 km (0.08 R)
• M43: 8,926,954 km (0.097 R)
• M44: 9,413,596 km (0.08 R)
• M45: 9,717,429 km (0.111 R)
• M46: 9,813,022 km (0.1 R)
• M47: 10,530,344 km (0.056 R)
• M48: 10,628,480 km (0.096 R)
• M49: 11,184,236 km (0.103 R)
• M50: 11,324,708 km (0.077 R)
• M51: 11,526,366 km (0.078 R)
• M52: 12,427,544 km (0.054 R)
• M53: 12,552,309 km (0.03 R)
• M54: 12,635,635 km (0.106 R)
• M55: 13,055,107 km (0.07 R)
• M56: 13,650,058 km (0.088 R)
• M57: 14,232,143 km (0.111 R)
• M58: 14,362,592 km (0.081 R)
• M59: 14,559,014 km (0.114 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 92

Radius: 13.8

Gravity: 0.48 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 2.3 AU - 3.82 AU

Year: 3511 Days

Day: 7.3 Hours

Environment

Temp: -196 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 29,449,857 km

• M1: 175,927 km (0.103 R)
• M2: 362,176 km (0.099 R)
• M3: 710,440 km (0.032 R)
• M4: 878,439 km (0.067 R)
• M5: 971,638 km (0.107 R)
• M6: 1,130,212 km (0.102 R)
• M7: 1,380,938 km (0.087 R)
• M8: 1,500,317 km (0.103 R)
• M9: 1,975,589 km (0.11 R)
• M10: 2,200,734 km (0.115 R)
• M11: 2,331,782 km (0.104 R)
• M12: 2,538,825 km (0.114 R)
• M13: 2,698,147 km (0.101 R)
• M14: 2,817,078 km (0.12 R)
• M15: 2,993,453 km (0.09 R)
• M16: 3,380,463 km (0.095 R)
• M17: 4,140,121 km (0.118 R)
• M18: 4,714,726 km (0.084 R)
• M19: 4,951,690 km (0.112 R)
• M20: 5,165,764 km (0.061 R)
• M21: 5,301,150 km (0.113 R)
• M22: 5,575,363 km (0.097 R)
• M23: 6,295,976 km (0.058 R)
• M24: 7,287,211 km (0.1 R)
• M25: 7,980,149 km (0.099 R)
• M26: 8,168,642 km (0.109 R)
• M27: 8,263,338 km (0.12 R)
• M28: 8,422,211 km (0.064 R)
• M29: 8,613,995 km (0.116 R)
• M30: 8,726,642 km (0.091 R)
• M31: 8,920,820 km (0.086 R)
• M32: 9,034,664 km (0.108 R)
• M33: 9,132,800 km (0.099 R)
• M34: 9,628,418 km (0.117 R)
• M35: 9,812,424 km (0.099 R)
• M36: 9,913,252 km (0.111 R)
• M37: 10,048,190 km (0.112 R)
• M38: 10,422,633 km (0.084 R)
• M39: 10,940,541 km (0.118 R)
• M40: 11,484,629 km (0.049 R)
• M41: 11,822,421 km (0.111 R)
• M42: 11,911,880 km (0.101 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 67.2

Radius: 5.8

Gravity: 2 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 6.93 AU - 9.45 AU

Year: 15376 Days

Day: 23.8 Hours

Environment

Temp: -229 °C

Axial Tilt: 47.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 29,449,857 km

• M1: 101,577 km (0.107 R)
• M2: 224,846 km (0.088 R)
• M3: 281,244 km (0.119 R)
• M4: 343,327 km (0.086 R)
• M5: 430,543 km (0.047 R)
• M6: 525,687 km (0.12 R)
• M7: 736,919 km (0.067 R)
• M8: 1,247,796 km (0.106 R)
• M9: 1,293,274 km (0.047 R)
• M10: 1,339,350 km (0.104 R)
• M11: 1,386,024 km (0.1 R)
• M12: 1,529,339 km (0.115 R)
• M13: 1,578,108 km (0.026 R)
• M14: 1,710,951 km (0.092 R)
• M15: 1,864,887 km (0.092 R)
• M16: 1,917,097 km (0.071 R)
• M17: 2,077,017 km (0.092 R)
• M18: 2,334,325 km (0.12 R)
• M19: 3,021,279 km (0.091 R)
• M20: 3,186,584 km (0.066 R)
• M21: 3,355,031 km (0.104 R)
• M22: 3,483,087 km (0.059 R)
• M23: 3,678,462 km (0.101 R)
• M24: 3,766,426 km (0.072 R)
• M25: 3,854,988 km (0.101 R)
• M26: 3,944,447 km (0.096 R)
• M27: 4,448,143 km (0.032 R)
• M28: 4,972,035 km (0.07 R)
• M29: 5,216,478 km (0.109 R)
• M30: 5,265,845 km (0.086 R)
• M31: 5,340,345 km (0.115 R)
• M32: 5,464,960 km (0.101 R)
• M33: 5,768,344 km (0.11 R)
• M34: 6,845,449 km (0.116 R)
• M35: 7,117,418 km (0.087 R)
• M36: 7,254,749 km (0.068 R)
• M37: 7,812,898 km (0.099 R)
• M38: 7,897,720 km (0.114 R)
• M39: 9,058,899 km (0.115 R)
• M40: 9,507,842 km (0.118 R)
• M41: 9,628,867 km (0.059 R)
• M42: 10,087,085 km (0.108 R)
• M43: 10,241,321 km (0.084 R)
• M44: 10,365,337 km (0.08 R)
• M45: 10,740,379 km (0.076 R)
• M46: 11,024,615 km (0.112 R)
• M47: 11,247,366 km (0.077 R)
• M48: 11,503,777 km (0.042 R)
• M49: 12,087,807 km (0.11 R)
• M50: 12,614,840 km (0.118 R)
• M51: 13,284,291 km (0.118 R)
• M52: 14,275,377 km (0.038 R)
• M53: 14,448,761 km (0.07 R)
• M54: 14,832,330 km (0.088 R)
• M55: 15,043,113 km (0.08 R)
• M56: 15,467,373 km (0.118 R)
• M57: 15,824,014 km (0.079 R)
• M58: 16,472,820 km (0.063 R)
• M59: 17,425,160 km (0.088 R)
• M60: 17,573,411 km (0.035 R)
• M61: 17,908,062 km (0.088 R)
• M62: 18,057,510 km (0.101 R)
• M63: 18,170,008 km (0.088 R)
• M64: 18,470,699 km (0.069 R)
• M65: 18,697,340 km (0.117 R)
• M66: 20,076,782 km (0.113 R)
• M67: 21,093,150 km (0.067 R)
• M68: 21,567,824 km (0.11 R)
• M69: 22,326,734 km (0.084 R)
• M70: 22,568,185 km (0.082 R)
• M71: 23,094,321 km (0.099 R)
• M72: 23,216,243 km (0.111 R)
• M73: 24,117,421 km (0.057 R)
• M74: 24,323,866 km (0.042 R)
• M75: 24,696,813 km (0.106 R)
• M76: 25,406,506 km (0.102 R)
• M77: 25,616,541 km (0.078 R)
• M78: 25,827,175 km (0.099 R)
• M79: 26,250,088 km (0.109 R)
• M80: 26,974,142 km (0.094 R)
• M81: 27,317,319 km (0.108 R)
• M82: 27,791,395 km (0.044 R)
• M83: 28,572,894 km (0.068 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: 455 - 18,506 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit