🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 470.3

Radius: 8.3

Gravity: 6.83 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.5 AU - 0.64 AU

Year: 292 Days

Day: 6.5 Hours

Environment

Temp: -137 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 54,975,631 km

• M1: 106,514 km (0.083 R)
• M2: 169,494 km (0.098 R)
• M3: 228,586 km (0.061 R)
• M4: 290,519 km (0.057 R)
• M5: 355,445 km (0.088 R)
• M6: 421,567 km (0.029 R)
• M7: 539,600 km (0.064 R)
• M8: 594,352 km (0.092 R)
• M9: 657,183 km (0.067 R)
• M10: 713,133 km (0.108 R)
• M11: 800,199 km (0.109 R)
• M12: 870,660 km (0.077 R)
• M13: 932,743 km (0.089 R)
• M14: 1,010,833 km (0.108 R)
• M15: 1,080,097 km (0.105 R)
• M16: 1,181,524 km (0.098 R)
• M17: 1,278,164 km (0.118 R)
• M18: 1,345,633 km (0.053 R)
• M19: 1,397,992 km (0.07 R)
• M20: 1,496,428 km (0.08 R)
• M21: 1,580,352 km (0.062 R)
• M22: 1,640,041 km (0.114 R)
• M23: 1,700,479 km (0.098 R)
• M24: 1,752,988 km (0.098 R)
• M25: 1,886,579 km (0.111 R)
• M26: 2,018,973 km (0.082 R)
• M27: 2,187,719 km (0.065 R)
• M28: 2,240,228 km (0.096 R)
• M29: 2,297,973 km (0.066 R)
• M30: 2,375,764 km (0.085 R)
• M31: 2,559,171 km (0.117 R)
• M32: 2,675,408 km (0.071 R)
• M33: 2,850,737 km (0.101 R)
• M34: 2,902,947 km (0.115 R)
• M35: 3,013,799 km (0.056 R)
• M36: 3,147,539 km (0.108 R)
• M37: 3,250,612 km (0.084 R)
• M38: 3,343,662 km (0.053 R)
• M39: 3,645,401 km (0.112 R)
• M40: 3,736,506 km (0.116 R)
• M41: 3,788,117 km (0.098 R)
• M42: 3,863,066 km (0.039 R)
• M43: 3,915,275 km (0.091 R)
• M44: 3,973,619 km (0.097 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 146.1

Radius: 12.7

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.54 AU - 0.62 AU

Year: 300 Days

Day: 6.9 Hours

Environment

Temp: -138 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 54,975,631 km

• M1: 158,574 km (0.074 R)
• M2: 246,537 km (0.094 R)
• M3: 342,130 km (0.061 R)
• M4: 421,268 km (0.097 R)
• M5: 550,071 km (0.06 R)
• M6: 697,276 km (0.054 R)
• M7: 792,270 km (0.115 R)
• M8: 887,265 km (0.11 R)
• M9: 994,527 km (0.09 R)
• M10: 1,081,593 km (0.073 R)
• M11: 1,165,816 km (0.073 R)
• M12: 1,278,763 km (0.069 R)
• M13: 1,411,007 km (0.116 R)
• M14: 1,510,340 km (0.111 R)
• M15: 1,592,769 km (0.069 R)
• M16: 1,680,134 km (0.119 R)
• M17: 1,805,945 km (0.078 R)
• M18: 1,890,468 km (0.12 R)
• M19: 2,004,163 km (0.11 R)
• M20: 2,113,220 km (0.101 R)
• M21: 2,202,679 km (0.07 R)
• M22: 2,326,396 km (0.094 R)
• M23: 2,430,217 km (0.084 R)
• M24: 2,516,535 km (0.115 R)
• M25: 2,708,021 km (0.03 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 399.7

Radius: 12.1

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.74 AU - 0.76 AU

Year: 441 Days

Day: 6.6 Hours

Environment

Temp: -165 °C

Axial Tilt: 44.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 54,975,631 km

• M1: 151,692 km (0.1 R)
• M2: 234,569 km (0.111 R)
• M3: 372,349 km (0.078 R)
• M4: 472,280 km (0.057 R)
• M5: 636,988 km (0.094 R)
• M6: 759,808 km (0.094 R)
• M7: 845,527 km (0.108 R)
• M8: 926,908 km (0.077 R)
• M9: 1,003,054 km (0.069 R)
• M10: 1,094,308 km (0.084 R)
• M11: 1,171,052 km (0.083 R)
• M12: 1,294,470 km (0.099 R)
• M13: 1,385,575 km (0.032 R)
• M14: 1,478,925 km (0.114 R)
• M15: 1,569,581 km (0.093 R)
• M16: 1,817,614 km (0.066 R)
• M17: 1,967,511 km (0.088 R)
• M18: 2,105,440 km (0.117 R)
• M19: 2,219,284 km (0.119 R)
• M20: 2,579,366 km (0.031 R)
• M21: 2,748,711 km (0.104 R)
• M22: 2,825,754 km (0.081 R)
• M23: 2,945,881 km (0.094 R)
• M24: 3,025,019 km (0.108 R)
• M25: 3,147,988 km (0.042 R)
• M26: 3,235,054 km (0.082 R)
• M27: 3,348,300 km (0.108 R)
• M28: 3,572,397 km (0.027 R)
• M29: 3,702,697 km (0.119 R)
• M30: 4,015,057 km (0.118 R)
• M31: 4,191,583 km (0.117 R)
• M32: 4,315,450 km (0.099 R)
• M33: 4,398,626 km (0.041 R)
• M34: 4,616,141 km (0.056 R)
• M35: 4,758,259 km (0.081 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 98.4

Radius: 11.1

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.87 AU - 1.37 AU

Year: 804 Days

Day: 9.5 Hours

Environment

Temp: -184 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 54,975,631 km

• M1: 139,126 km (0.107 R)
• M2: 209,736 km (0.072 R)
• M3: 279,449 km (0.099 R)
• M4: 353,201 km (0.041 R)
• M5: 425,756 km (0.103 R)
• M6: 612,753 km (0.094 R)
• M7: 722,408 km (0.085 R)
• M8: 917,484 km (0.069 R)
• M9: 1,097,899 km (0.057 R)
• M10: 1,192,744 km (0.03 R)
• M11: 1,264,551 km (0.074 R)
• M12: 1,440,029 km (0.089 R)
• M13: 1,728,005 km (0.088 R)
• M14: 1,849,478 km (0.061 R)
• M15: 1,989,053 km (0.059 R)
• M16: 2,111,574 km (0.071 R)
• M17: 2,184,129 km (0.086 R)
• M18: 2,374,866 km (0.089 R)
• M19: 2,532,692 km (0.083 R)
• M20: 2,610,034 km (0.09 R)
• M21: 2,773,096 km (0.088 R)
• M22: 2,898,908 km (0.106 R)
• M23: 2,968,471 km (0.088 R)
• M24: 3,044,466 km (0.087 R)
• M25: 3,121,060 km (0.101 R)
• M26: 3,216,205 km (0.105 R)
• M27: 3,306,412 km (0.112 R)
• M28: 3,409,635 km (0.07 R)
• M29: 3,532,455 km (0.081 R)
• M30: 3,694,319 km (0.05 R)
• M31: 3,839,579 km (0.087 R)
• M32: 3,941,904 km (0.098 R)
• M33: 4,071,007 km (0.08 R)
• M34: 4,339,984 km (0.067 R)
• M35: 4,413,137 km (0.099 R)
• M36: 4,506,935 km (0.055 R)
• M37: 4,601,331 km (0.087 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 18.1

Radius: 9.4

Gravity: 0.2 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 1.95 AU - 2.79 AU

Year: 2475 Days

Day: 7.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 54,975,631 km

• M1: 117,135 km (0.108 R)
• M2: 199,863 km (0.079 R)
• M3: 348,862 km (0.027 R)
• M4: 430,692 km (0.109 R)
• M5: 506,538 km (0.1 R)
• M6: 576,849 km (0.11 R)
• M7: 685,457 km (0.077 R)
• M8: 942,167 km (0.062 R)
• M9: 1,004,251 km (0.106 R)
• M10: 1,077,254 km (0.071 R)
• M11: 1,175,839 km (0.075 R)
• M12: 1,312,123 km (0.114 R)
• M13: 1,422,975 km (0.119 R)
• M14: 1,943,725 km (0.088 R)
• M15: 2,012,839 km (0.085 R)
• M16: 2,213,001 km (0.099 R)
• M17: 2,291,391 km (0.073 R)
• M18: 2,513,244 km (0.111 R)
• M19: 2,576,225 km (0.086 R)
• M20: 2,703,533 km (0.027 R)
• M21: 3,111,935 km (0.089 R)
• M22: 3,186,435 km (0.046 R)
• M23: 3,282,177 km (0.048 R)
• M24: 3,567,909 km (0.103 R)
• M25: 3,631,788 km (0.1 R)
• M26: 3,753,411 km (0.106 R)
• M27: 3,912,882 km (0.117 R)
• M28: 4,096,887 km (0.093 R)
• M29: 4,178,717 km (0.117 R)
• M30: 4,238,556 km (0.073 R)
• M31: 4,427,648 km (0.08 R)
• M32: 4,619,433 km (0.076 R)
• M33: 4,813,910 km (0.087 R)
• M34: 5,138,986 km (0.117 R)
• M35: 5,211,242 km (0.091 R)
• M36: 5,405,719 km (0.112 R)
• M37: 5,487,399 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 721.2

Radius: 11.3

Gravity: 5.65 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 3.73 AU - 5.19 AU

Year: 6388 Days

Day: 5.5 Hours

Environment

Temp: -219 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 54,975,631 km

• M1: 166,353 km (0.119 R)
• M2: 282,890 km (0.025 R)
• M3: 376,388 km (0.091 R)
• M4: 737,667 km (0.088 R)
• M5: 1,033,422 km (0.116 R)
• M6: 1,245,851 km (0.115 R)
• M7: 1,564,046 km (0.087 R)
• M8: 1,656,946 km (0.107 R)
• M9: 2,109,330 km (0.064 R)
• M10: 2,254,590 km (0.101 R)
• M11: 2,489,757 km (0.093 R)
• M12: 2,599,413 km (0.06 R)
• M13: 2,733,153 km (0.099 R)
• M14: 2,914,915 km (0.11 R)
• M15: 3,657,518 km (0.037 R)
• M16: 3,883,710 km (0.076 R)
• M17: 4,403,264 km (0.065 R)
• M18: 4,862,080 km (0.088 R)
• M19: 4,944,658 km (0.119 R)
• M20: 5,593,614 km (0.096 R)
• M21: 5,854,812 km (0.092 R)
• M22: 5,972,246 km (0.117 R)
• M23: 6,060,808 km (0.092 R)
• M24: 6,329,187 km (0.025 R)
• M25: 6,631,973 km (0.067 R)
• M26: 7,064,011 km (0.107 R)
• M27: 7,600,918 km (0.097 R)
• M28: 7,923,002 km (0.085 R)
• M29: 8,447,493 km (0.081 R)
• M30: 8,613,696 km (0.081 R)
• M31: 8,983,352 km (0.098 R)
• M32: 9,633,953 km (0.086 R)
• M33: 10,229,054 km (0.108 R)
• M34: 10,370,723 km (0.088 R)
• M35: 10,980,484 km (0.12 R)
• M36: 11,381,256 km (0.103 R)
• M37: 11,861,166 km (0.103 R)
• M38: 12,122,364 km (0.103 R)
• M39: 12,423,056 km (0.108 R)
• M40: 12,726,440 km (0.043 R)
• M41: 13,573,015 km (0.058 R)
• M42: 13,650,806 km (0.102 R)
• M43: 13,885,375 km (0.032 R)
• M44: 14,279,117 km (0.112 R)
• M45: 15,523,322 km (0.087 R)
• M46: 15,809,054 km (0.096 R)
• M47: 16,885,560 km (0.108 R)
• M48: 17,602,284 km (0.096 R)
• M49: 18,071,273 km (0.032 R)
• M50: 19,109,034 km (0.103 R)
• M51: 19,679,151 km (0.081 R)
• M52: 19,944,089 km (0.07 R)
• M53: 20,210,373 km (0.106 R)
• M54: 20,701,503 km (0.086 R)
• M55: 21,106,165 km (0.112 R)
• M56: 21,604,476 km (0.049 R)
• M57: 21,923,568 km (0.108 R)
• M58: 22,936,645 km (0.091 R)
• M59: 23,076,070 km (0.086 R)
• M60: 23,823,910 km (0.095 R)
• M61: 23,964,980 km (0.112 R)
• M62: 24,342,715 km (0.113 R)
• M63: 24,437,411 km (0.109 R)
• M64: 24,532,256 km (0.114 R)
• M65: 25,343,375 km (0.114 R)
• M66: 25,487,438 km (0.109 R)
• M67: 26,066,382 km (0.09 R)
• M68: 26,260,410 km (0.09 R)
• M69: 26,649,664 km (0.061 R)
• M70: 27,335,720 km (0.115 R)
• M71: 27,730,359 km (0.109 R)
• M72: 27,829,243 km (0.08 R)
• M73: 28,077,127 km (0.117 R)
• M74: 28,525,172 km (0.101 R)
• M75: 29,680,966 km (0.055 R)
• M76: 30,340,991 km (0.113 R)
• M77: 31,314,275 km (0.043 R)
• M78: 32,506,271 km (0.108 R)
• M79: 32,871,888 km (0.078 R)
• M80: 33,344,169 km (0.105 R)
• M81: 33,871,501 km (0.088 R)
• M82: 34,136,140 km (0.106 R)
• M83: 34,827,581 km (0.112 R)
• M84: 35,738,632 km (0.103 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 457.7

Radius: 14.5

Gravity: 2.18 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 4.5 AU - 5.06 AU

Year: 7088 Days

Day: 7.4 Hours

Environment

Temp: -215 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 54,975,631 km

• M1: 181,313 km (0.09 R)
• M2: 288,425 km (0.028 R)
• M3: 406,607 km (0.115 R)
• M4: 517,908 km (0.03 R)
• M5: 631,153 km (0.105 R)
• M6: 780,901 km (0.087 R)
• M7: 972,536 km (0.118 R)
• M8: 1,291,628 km (0.11 R)
• M9: 1,422,227 km (0.045 R)
• M10: 1,644,679 km (0.083 R)
• M11: 1,787,395 km (0.09 R)
• M12: 2,163,185 km (0.057 R)
• M13: 2,689,620 km (0.095 R)
• M14: 2,795,386 km (0.103 R)
• M15: 3,143,799 km (0.065 R)
• M16: 3,787,519 km (0.105 R)
• M17: 3,930,834 km (0.053 R)
• M18: 4,149,247 km (0.071 R)
• M19: 4,322,032 km (0.034 R)
• M20: 4,751,528 km (0.068 R)
• M21: 5,301,300 km (0.074 R)
• M22: 5,570,277 km (0.089 R)
• M23: 5,761,313 km (0.103 R)
• M24: 5,871,417 km (0.118 R)
• M25: 6,490,004 km (0.111 R)
• M26: 6,662,341 km (0.097 R)
• M27: 7,576,983 km (0.094 R)
• M28: 7,972,370 km (0.117 R)
• M29: 8,656,930 km (0.109 R)
• M30: 8,846,919 km (0.039 R)
• M31: 9,328,026 km (0.102 R)
• M32: 9,425,264 km (0.106 R)
• M33: 10,015,877 km (0.072 R)
• M34: 11,267,861 km (0.105 R)
• M35: 12,141,513 km (0.098 R)
• M36: 12,497,107 km (0.03 R)
• M37: 12,712,079 km (0.072 R)
• M38: 13,291,621 km (0.085 R)
• M39: 13,511,081 km (0.111 R)
• M40: 13,621,335 km (0.065 R)
• M41: 13,768,838 km (0.093 R)
• M42: 14,214,341 km (0.104 R)
• M43: 14,476,436 km (0.117 R)
• M44: 15,694,761 km (0.119 R)
• M45: 16,004,579 km (0.099 R)
• M46: 16,160,310 km (0.045 R)
• M47: 16,787,873 km (0.068 R)
• M48: 17,025,285 km (0.105 R)
• M49: 17,303,687 km (0.115 R)
• M50: 17,423,514 km (0.048 R)
• M51: 17,663,918 km (0.082 R)
• M52: 17,824,885 km (0.106 R)
• M53: 18,882,542 km (0.094 R)
• M54: 19,709,968 km (0.091 R)
• M55: 20,591,549 km (0.068 R)
• M56: 21,743,901 km (0.103 R)
• M57: 22,742,167 km (0.081 R)
• M58: 23,799,525 km (0.052 R)
• M59: 24,021,977 km (0.102 R)
• M60: 24,289,608 km (0.096 R)
• M61: 24,648,194 km (0.117 R)
• M62: 26,008,039 km (0.065 R)
• M63: 26,099,593 km (0.1 R)
• M64: 26,743,312 km (0.054 R)
• M65: 27,905,987 km (0.118 R)
• M66: 28,611,341 km (0.106 R)
• M67: 28,990,123 km (0.089 R)
• M68: 30,136,042 km (0.11 R)
• M69: 30,376,596 km (0.109 R)
• M70: 30,666,217 km (0.103 R)
• M71: 31,491,698 km (0.092 R)
• M72: 32,275,142 km (0.111 R)
• M73: 32,472,163 km (0.076 R)
• M74: 33,164,352 km (0.11 R)
• M75: 33,263,685 km (0.094 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 554.4

Radius: 7

Gravity: 11.31 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 6.13 AU - 8.67 AU

Year: 13653 Days

Day: 22.9 Hours

Environment

Temp: -229 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 54,975,631 km

• M1: 126,261 km (0.052 R)
• M2: 242,349 km (0.09 R)
• M3: 303,983 km (0.108 R)
• M4: 1,017,714 km (0.055 R)
• M5: 1,593,816 km (0.113 R)
• M6: 1,822,850 km (0.109 R)
• M7: 1,928,017 km (0.076 R)
• M8: 3,275,745 km (0.115 R)
• M9: 3,699,256 km (0.084 R)
• M10: 4,174,379 km (0.058 R)
• M11: 4,243,942 km (0.082 R)
• M12: 5,712,395 km (0.094 R)
• M13: 6,102,097 km (0.081 R)
• M14: 7,744,981 km (0.092 R)
• M15: 8,002,588 km (0.108 R)
• M16: 8,089,056 km (0.09 R)
• M17: 8,438,217 km (0.096 R)
• M18: 8,614,743 km (0.092 R)
• M19: 9,151,351 km (0.116 R)
• M20: 9,332,514 km (0.081 R)
• M21: 9,606,726 km (0.072 R)
• M22: 10,069,582 km (0.075 R)
• M23: 10,162,931 km (0.052 R)
• M24: 10,968,815 km (0.043 R)
• M25: 12,041,881 km (0.119 R)
• M26: 12,995,417 km (0.107 R)
• M27: 13,046,281 km (0.077 R)
• M28: 17,100,084 km (0.092 R)
• M29: 17,603,929 km (0.063 R)
• M30: 20,195,862 km (0.111 R)
• M31: 20,431,928 km (0.105 R)
• M32: 21,145,809 km (0.108 R)
• M33: 21,928,355 km (0.052 R)
• M34: 22,110,266 km (0.119 R)
• M35: 22,414,548 km (0.109 R)
• M36: 22,597,806 km (0.079 R)
• M37: 22,965,816 km (0.074 R)
• M38: 23,088,935 km (0.106 R)
• M39: 25,151,890 km (0.112 R)
• M40: 26,237,372 km (0.044 R)
• M41: 26,430,503 km (0.11 R)
• M42: 26,947,812 km (0.095 R)
• M43: 28,851,296 km (0.071 R)
• M44: 29,383,864 km (0.096 R)
• M45: 32,233,255 km (0.116 R)
• M46: 32,371,034 km (0.074 R)
• M47: 33,830,511 km (0.099 R)
• M48: 34,040,696 km (0.085 R)
• M49: 34,533,023 km (0.064 R)
• M50: 34,744,704 km (0.102 R)
• M51: 35,027,593 km (0.093 R)
• M52: 37,390,641 km (0.109 R)
• M53: 37,535,602 km (0.094 R)
• M54: 37,898,526 km (0.098 R)
• M55: 37,971,231 km (0.088 R)
• M56: 38,408,655 km (0.095 R)
• M57: 38,481,808 km (0.083 R)
• M58: 38,774,422 km (0.094 R)
• M59: 40,620,609 km (0.065 R)
• M60: 43,101,091 km (0.094 R)
• M61: 43,253,083 km (0.119 R)
• M62: 45,012,653 km (0.042 R)
• M63: 45,552,851 km (0.067 R)
• M64: 46,483,948 km (0.084 R)
• M65: 46,561,739 km (0.041 R)
• M66: 47,108,070 km (0.093 R)
• M67: 47,577,957 km (0.037 R)
• M68: 48,285,854 km (0.107 R)
• M69: 48,759,631 km (0.066 R)
• M70: 48,997,192 km (0.115 R)
• M71: 49,235,053 km (0.073 R)
• M72: 51,876,951 km (0.043 R)
• M73: 52,930,270 km (0.073 R)
• M74: 53,500,387 km (0.038 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 356 - 11,994 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit