🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.86

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.61 AU - 0.77 AU

Year: 260 Days

Day: 12.7 Hours

Environment

Temp: -38 °C

Axial Tilt: 25.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.31

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.99 AU - 1.09 AU

Year: 480 Days

Day: 27.5 Hours

Environment

Temp: -74 °C

Axial Tilt: 14.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.91

Radius: 1.3

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 1.14 AU - 1.28 AU

Year: 603 Days

Day: 42.5 Hours

Environment

Temp: -100 °C

Axial Tilt: 4.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 59,566,956 km

• M1: 40,541 km (0.112 R)
• M2: 1,004,400 km (0.108 R)

Asteroid Belt

Center: 2.17 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 3.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 727.4

Radius: 9.4

Gravity: 8.23 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 2.66 AU - 3.58 AU

Year: 2497 Days

Day: 5.3 Hours

Environment

Temp: -164 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 59,566,956 km

• M1: 175,478 km (0.117 R)
• M2: 393,143 km (0.118 R)
• M3: 458,667 km (0.113 R)
• M4: 520,750 km (0.087 R)
• M5: 611,406 km (0.091 R)
• M6: 681,269 km (0.082 R)
• M7: 772,673 km (0.091 R)
• M8: 1,009,786 km (0.113 R)
• M9: 1,203,066 km (0.102 R)
• M10: 1,304,344 km (0.046 R)
• M11: 1,444,068 km (0.12 R)
• M12: 1,552,078 km (0.093 R)
• M13: 1,625,680 km (0.041 R)
• M14: 1,725,611 km (0.112 R)
• M15: 1,998,179 km (0.071 R)
• M16: 2,312,484 km (0.115 R)
• M17: 2,439,792 km (0.087 R)
• M18: 3,236,400 km (0.109 R)
• M19: 3,837,036 km (0.088 R)
• M20: 3,937,715 km (0.087 R)
• M21: 4,073,400 km (0.073 R)
• M22: 4,454,426 km (0.093 R)
• M23: 4,649,352 km (0.091 R)
• M24: 4,829,019 km (0.095 R)
• M25: 4,956,028 km (0.113 R)
• M26: 5,213,635 km (0.092 R)
• M27: 5,780,312 km (0.114 R)
• M28: 5,876,653 km (0.09 R)
• M29: 6,168,967 km (0.061 R)
• M30: 6,366,586 km (0.105 R)
• M31: 6,426,276 km (0.049 R)
• M32: 6,687,025 km (0.07 R)
• M33: 6,951,364 km (0.067 R)
• M34: 7,053,839 km (0.102 R)
• M35: 7,448,179 km (0.097 R)
• M36: 7,764,728 km (0.083 R)
• M37: 8,064,073 km (0.082 R)
• M38: 8,498,206 km (0.061 R)
• M39: 8,564,029 km (0.099 R)
• M40: 8,895,538 km (0.1 R)
• M41: 9,163,767 km (0.111 R)
• M42: 9,344,182 km (0.027 R)
• M43: 9,892,159 km (0.077 R)
• M44: 10,054,024 km (0.113 R)
• M45: 10,216,787 km (0.089 R)
• M46: 10,356,960 km (0.111 R)
• M47: 10,615,615 km (0.109 R)
• M48: 10,757,583 km (0.085 R)
• M49: 10,828,791 km (0.114 R)
• M50: 11,067,400 km (0.071 R)
• M51: 11,501,084 km (0.087 R)
• M52: 11,598,323 km (0.075 R)
• M53: 12,310,858 km (0.073 R)
• M54: 12,484,989 km (0.106 R)
• M55: 12,835,797 km (0.1 R)
• M56: 13,240,608 km (0.097 R)
• M57: 13,393,497 km (0.07 R)
• M58: 13,726,801 km (0.074 R)
• M59: 13,829,874 km (0.093 R)
• M60: 13,907,366 km (0.059 R)
• M61: 14,349,278 km (0.089 R)
• M62: 14,585,194 km (0.111 R)
• M63: 15,434,012 km (0.115 R)
• M64: 15,675,613 km (0.1 R)
• M65: 15,810,401 km (0.073 R)
• M66: 15,891,483 km (0.095 R)
• M67: 16,081,173 km (0.051 R)
• M68: 16,326,064 km (0.052 R)
• M69: 16,654,731 km (0.073 R)
• M70: 16,847,263 km (0.086 R)
• M71: 17,179,371 km (0.11 R)
• M72: 17,373,998 km (0.111 R)
• M73: 17,457,623 km (0.091 R)
• M74: 17,793,620 km (0.115 R)
• M75: 17,906,117 km (0.089 R)
• M76: 18,075,312 km (0.088 R)
• M77: 18,216,682 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 289.7

Radius: 11.2

Gravity: 2.31 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 5.66 AU - 5.78 AU

Year: 6198 Days

Day: 8.2 Hours

Environment

Temp: -193 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (73)

Outer Limit: 59,566,956 km

• M1: 151,393 km (0.112 R)
• M2: 248,332 km (0.083 R)
• M3: 379,380 km (0.042 R)
• M4: 560,543 km (0.111 R)
• M5: 705,952 km (0.092 R)
• M6: 818,450 km (0.053 R)
• M7: 1,247,796 km (0.074 R)
• M8: 1,444,068 km (0.108 R)
• M9: 1,546,094 km (0.105 R)
• M10: 1,635,554 km (0.104 R)
• M11: 1,773,034 km (0.076 R)
• M12: 2,624,994 km (0.101 R)
• M13: 2,769,057 km (0.085 R)
• M14: 3,121,808 km (0.084 R)
• M15: 3,255,549 km (0.118 R)
• M16: 3,469,474 km (0.101 R)
• M17: 3,728,428 km (0.045 R)
• M18: 4,286,278 km (0.094 R)
• M19: 4,651,147 km (0.099 R)
• M20: 4,959,319 km (0.034 R)
• M21: 5,183,417 km (0.105 R)
• M22: 6,426,575 km (0.061 R)
• M23: 6,671,317 km (0.044 R)
• M24: 7,069,098 km (0.114 R)
• M25: 7,169,777 km (0.087 R)
• M26: 7,245,623 km (0.078 R)
• M27: 7,603,013 km (0.056 R)
• M28: 8,176,272 km (0.086 R)
• M29: 8,308,516 km (0.033 R)
• M30: 8,494,915 km (0.111 R)
• M31: 8,736,516 km (0.091 R)
• M32: 9,642,032 km (0.119 R)
• M33: 10,063,598 km (0.048 R)
• M34: 10,176,994 km (0.066 R)
• M35: 10,895,512 km (0.084 R)
• M36: 11,275,640 km (0.118 R)
• M37: 12,109,050 km (0.066 R)
• M38: 12,229,776 km (0.118 R)
• M39: 12,747,235 km (0.055 R)
• M40: 12,962,506 km (0.077 R)
• M41: 13,055,107 km (0.118 R)
• M42: 13,178,824 km (0.114 R)
• M43: 13,740,714 km (0.109 R)
• M44: 13,835,110 km (0.115 R)
• M45: 14,342,397 km (0.073 R)
• M46: 14,470,153 km (0.085 R)
• M47: 14,566,195 km (0.08 R)
• M48: 14,855,667 km (0.068 R)
• M49: 14,985,069 km (0.113 R)
• M50: 15,277,234 km (0.109 R)
• M51: 15,669,928 km (0.115 R)
• M52: 15,900,458 km (0.091 R)
• M53: 16,398,320 km (0.109 R)
• M54: 17,137,782 km (0.038 R)
• M55: 17,307,426 km (0.055 R)
• M56: 17,579,844 km (0.034 R)
• M57: 18,094,760 km (0.096 R)
• M58: 19,562,315 km (0.109 R)
• M59: 20,131,535 km (0.104 R)
• M60: 20,310,454 km (0.091 R)
• M61: 20,814,449 km (0.11 R)
• M62: 21,068,018 km (0.046 R)
• M63: 21,213,427 km (0.086 R)
• M64: 21,358,986 km (0.037 R)
• M65: 21,798,055 km (0.114 R)
• M66: 23,470,859 km (0.105 R)
• M67: 23,885,993 km (0.086 R)
• M68: 24,075,533 km (0.091 R)
• M69: 24,303,520 km (0.04 R)
• M70: 24,646,997 km (0.078 R)
• M71: 24,992,119 km (0.097 R)
• M72: 25,454,826 km (0.092 R)
• M73: 26,037,061 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 331.4

Radius: 14.9

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 6.94 AU - 7.1 AU

Year: 8426 Days

Day: 7.3 Hours

Environment

Temp: -182 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 59,566,956 km

• M1: 213,775 km (0.075 R)
• M2: 592,707 km (0.07 R)
• M3: 751,281 km (0.096 R)
• M4: 912,547 km (0.053 R)
• M5: 1,101,788 km (0.091 R)
• M6: 1,487,302 km (0.117 R)
• M7: 1,643,033 km (0.072 R)
• M8: 1,990,549 km (0.111 R)
• M9: 2,262,069 km (0.114 R)
• M10: 2,463,578 km (0.089 R)
• M11: 2,650,276 km (0.108 R)
• M12: 2,820,219 km (0.115 R)
• M13: 3,104,305 km (0.039 R)
• M14: 3,329,450 km (0.073 R)
• M15: 3,653,778 km (0.111 R)
• M16: 3,939,959 km (0.109 R)
• M17: 4,662,367 km (0.073 R)
• M18: 4,765,291 km (0.12 R)
• M19: 4,947,202 km (0.117 R)
• M20: 5,345,132 km (0.096 R)
• M21: 5,670,956 km (0.119 R)
• M22: 5,781,060 km (0.1 R)
• M23: 6,285,205 km (0.108 R)
• M24: 6,427,921 km (0.036 R)
• M25: 6,571,685 km (0.069 R)
• M26: 7,486,625 km (0.101 R)
• M27: 7,759,791 km (0.091 R)
• M28: 7,913,129 km (0.091 R)
• M29: 9,895,750 km (0.119 R)
• M30: 11,636,171 km (0.119 R)
• M31: 12,595,542 km (0.088 R)
• M32: 12,884,715 km (0.102 R)
• M33: 13,212,634 km (0.1 R)
• M34: 13,951,348 km (0.076 R)
• M35: 14,514,135 km (0.112 R)
• M36: 16,012,358 km (0.079 R)
• M37: 16,207,882 km (0.08 R)
• M38: 16,364,960 km (0.119 R)
• M39: 16,522,636 km (0.075 R)
• M40: 16,799,691 km (0.072 R)
• M41: 17,038,300 km (0.037 R)
• M42: 17,680,224 km (0.112 R)
• M43: 18,289,387 km (0.091 R)
• M44: 18,822,853 km (0.118 R)
• M45: 19,569,945 km (0.081 R)
• M46: 19,695,308 km (0.077 R)
• M47: 20,073,341 km (0.05 R)
• M48: 20,326,760 km (0.118 R)
• M49: 21,093,150 km (0.097 R)
• M50: 21,869,114 km (0.098 R)
• M51: 23,271,594 km (0.068 R)
• M52: 23,537,729 km (0.05 R)
• M53: 23,715,750 km (0.116 R)
• M54: 24,118,019 km (0.107 R)
• M55: 24,883,960 km (0.116 R)
• M56: 26,301,101 km (0.116 R)
• M57: 26,671,206 km (0.099 R)
• M58: 26,763,957 km (0.103 R)
• M59: 26,903,232 km (0.075 R)
• M60: 27,229,356 km (0.077 R)
• M61: 27,510,001 km (0.05 R)
• M62: 28,026,862 km (0.066 R)
• M63: 28,262,927 km (0.115 R)
• M64: 28,452,169 km (0.112 R)
• M65: 28,879,570 km (0.09 R)
• M66: 29,070,307 km (0.096 R)
• M67: 29,357,086 km (0.083 R)
• M68: 29,692,784 km (0.074 R)
• M69: 30,271,428 km (0.036 R)
• M70: 30,562,097 km (0.107 R)
• M71: 31,243,964 km (0.071 R)
• M72: 31,832,333 km (0.049 R)
• M73: 32,177,305 km (0.075 R)
• M74: 32,375,074 km (0.091 R)
• M75: 32,474,107 km (0.076 R)
• M76: 32,771,658 km (0.102 R)
• M77: 33,319,635 km (0.113 R)

Planet 7 - Ice Giant

Semi-Major Axis: 11.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 440

Radius: 4.6

Gravity: 20.79 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 10.82 AU - 12.5 AU

Year: 18038 Days

Day: 20.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 59,566,956 km

• M1: 62,682 km (0.076 R)
• M2: 169,644 km (0.083 R)
• M3: 217,515 km (0.117 R)
• M4: 344,075 km (0.08 R)
• M5: 622,327 km (0.115 R)
• M6: 681,119 km (0.109 R)
• M7: 1,240,017 km (0.11 R)
• M8: 1,710,352 km (0.111 R)
• M9: 1,964,370 km (0.077 R)
• M10: 2,022,414 km (0.055 R)
• M11: 2,538,975 km (0.093 R)
• M12: 2,570,540 km (0.059 R)
• M13: 2,634,269 km (0.111 R)
• M14: 2,861,059 km (0.109 R)
• M15: 3,127,942 km (0.103 R)
• M16: 3,472,765 km (0.078 R)
• M17: 5,329,424 km (0.094 R)
• M18: 5,410,656 km (0.106 R)
• M19: 6,591,731 km (0.097 R)
• M20: 6,635,264 km (0.102 R)
• M21: 7,848,652 km (0.058 R)
• M22: 8,409,495 km (0.051 R)
• M23: 8,934,882 km (0.077 R)
• M24: 9,079,992 km (0.109 R)
• M25: 9,177,231 km (0.088 R)
• M26: 11,928,635 km (0.085 R)
• M27: 12,572,205 km (0.093 R)
• M28: 13,669,655 km (0.105 R)
• M29: 14,399,244 km (0.118 R)
• M30: 15,488,316 km (0.099 R)
• M31: 15,720,941 km (0.096 R)
• M32: 16,072,047 km (0.051 R)
• M33: 16,662,959 km (0.034 R)
• M34: 17,140,774 km (0.066 R)
• M35: 18,109,869 km (0.117 R)
• M36: 18,416,395 km (0.068 R)
• M37: 19,096,617 km (0.068 R)
• M38: 19,848,197 km (0.103 R)
• M39: 20,227,577 km (0.098 R)
• M40: 21,250,826 km (0.094 R)
• M41: 21,639,033 km (0.073 R)
• M42: 22,029,334 km (0.103 R)
• M43: 22,160,082 km (0.092 R)
• M44: 22,883,238 km (0.025 R)
• M45: 23,681,044 km (0.083 R)
• M46: 24,420,207 km (0.071 R)
• M47: 26,128,465 km (0.087 R)
• M48: 27,381,945 km (0.067 R)
• M49: 29,083,472 km (0.031 R)
• M50: 30,019,356 km (0.036 R)
• M51: 30,673,099 km (0.043 R)
• M52: 31,184,723 km (0.118 R)
• M53: 31,258,176 km (0.112 R)
• M54: 31,478,384 km (0.079 R)
• M55: 33,184,697 km (0.09 R)
• M56: 33,634,688 km (0.06 R)
• M57: 33,860,431 km (0.103 R)
• M58: 34,086,772 km (0.096 R)
• M59: 35,838,115 km (0.106 R)
• M60: 38,244,696 km (0.05 R)
• M61: 38,716,378 km (0.073 R)
• M62: 38,874,054 km (0.102 R)
• M63: 40,143,242 km (0.061 R)
• M64: 40,382,748 km (0.062 R)
• M65: 40,782,923 km (0.078 R)
• M66: 41,991,374 km (0.115 R)
• M67: 42,478,016 km (0.109 R)
• M68: 43,784,903 km (0.102 R)
• M69: 43,949,162 km (0.113 R)
• M70: 44,360,705 km (0.077 R)
• M71: 46,354,247 km (0.032 R)
• M72: 46,689,346 km (0.077 R)
• M73: 47,277,714 km (0.052 R)
• M74: 48,122,344 km (0.068 R)
• M75: 49,998,301 km (0.081 R)
• M76: 51,550,678 km (0.093 R)
• M77: 51,637,445 km (0.069 R)
• M78: 53,119,062 km (0.114 R)
• M79: 53,206,577 km (0.114 R)
• M80: 54,173,129 km (0.091 R)
• M81: 54,791,267 km (0.079 R)
• M82: 54,968,391 km (0.055 R)
• M83: 56,034,575 km (0.106 R)
• M84: 56,123,736 km (0.107 R)
• M85: 56,212,896 km (0.115 R)
• M86: 56,570,285 km (0.11 R)
• M87: 58,097,231 km (0.109 R)
• M88: 58,820,387 km (0.119 R)
• M89: 61,283,217 km (0.05 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 203.3

Radius: 7.7

Gravity: 3.43 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 11.58 AU - 17.74 AU

Year: 25429 Days

Day: 19.3 Hours

Environment

Temp: -214 °C

Axial Tilt: 4.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 59,566,956 km

• M1: 146,606 km (0.08 R)
• M2: 239,357 km (0.055 R)
• M3: 330,910 km (0.093 R)
• M4: 436,227 km (0.045 R)
• M5: 485,146 km (0.109 R)
• M6: 821,442 km (0.088 R)
• M7: 1,543,551 km (0.062 R)
• M8: 1,595,611 km (0.062 R)
• M9: 1,809,685 km (0.107 R)
• M10: 2,090,331 km (0.101 R)
• M11: 2,506,363 km (0.114 R)
• M12: 2,755,593 km (0.104 R)
• M13: 2,915,513 km (0.091 R)
• M14: 4,081,778 km (0.079 R)
• M15: 5,177,433 km (0.06 R)
• M16: 5,414,994 km (0.081 R)
• M17: 5,983,167 km (0.038 R)
• M18: 6,741,478 km (0.055 R)
• M19: 6,957,348 km (0.112 R)
• M20: 7,307,706 km (0.119 R)
• M21: 8,208,585 km (0.107 R)
• M22: 9,144,170 km (0.078 R)
• M23: 9,335,356 km (0.077 R)
• M24: 9,819,006 km (0.052 R)
• M25: 9,916,843 km (0.05 R)
• M26: 10,211,850 km (0.031 R)
• M27: 10,360,550 km (0.111 R)
• M28: 10,760,425 km (0.105 R)
• M29: 10,962,233 km (0.085 R)
• M30: 11,165,387 km (0.092 R)
• M31: 12,568,764 km (0.106 R)
• M32: 12,888,006 km (0.066 R)
• M33: 13,426,259 km (0.12 R)
• M34: 13,643,625 km (0.105 R)
• M35: 13,807,435 km (0.117 R)
• M36: 14,081,797 km (0.105 R)
• M37: 14,468,956 km (0.087 R)
• M38: 15,480,687 km (0.119 R)
• M39: 16,110,195 km (0.112 R)
• M40: 17,809,477 km (0.052 R)
• M41: 18,048,235 km (0.082 R)
• M42: 18,650,067 km (0.1 R)
• M43: 19,014,189 km (0.095 R)
• M44: 19,749,612 km (0.104 R)
• M45: 20,870,249 km (0.104 R)
• M46: 22,075,260 km (0.077 R)
• M47: 22,783,157 km (0.039 R)
• M48: 23,629,432 km (0.102 R)
• M49: 24,884,708 km (0.115 R)
• M50: 24,951,429 km (0.081 R)
• M51: 25,285,630 km (0.107 R)
• M52: 26,569,180 km (0.036 R)
• M53: 26,910,413 km (0.077 R)
• M54: 27,390,772 km (0.115 R)
• M55: 27,943,087 km (0.113 R)
• M56: 28,220,591 km (0.079 R)
• M57: 29,551,414 km (0.115 R)
• M58: 30,545,043 km (0.043 R)
• M59: 30,974,239 km (0.117 R)
• M60: 31,117,703 km (0.06 R)
• M61: 31,766,210 km (0.058 R)
• M62: 33,591,005 km (0.106 R)
• M63: 35,224,763 km (0.085 R)
• M64: 35,449,609 km (0.078 R)
• M65: 35,975,894 km (0.106 R)
• M66: 36,353,479 km (0.108 R)
• M67: 36,960,248 km (0.108 R)
• M68: 39,187,910 km (0.092 R)
• M69: 39,498,625 km (0.026 R)
• M70: 39,888,028 km (0.094 R)
• M71: 40,278,778 km (0.11 R)
• M72: 41,458,656 km (0.119 R)
• M73: 42,331,111 km (0.12 R)
• M74: 42,729,640 km (0.048 R)
• M75: 42,969,445 km (0.09 R)
• M76: 44,174,905 km (0.052 R)
• M77: 44,741,133 km (0.087 R)
• M78: 44,822,215 km (0.109 R)
• M79: 45,309,904 km (0.059 R)
• M80: 45,799,239 km (0.101 R)
• M81: 47,030,429 km (0.116 R)
• M82: 47,360,591 km (0.079 R)
• M83: 48,522,069 km (0.092 R)
• M84: 48,772,197 km (0.084 R)
• M85: 51,211,989 km (0.099 R)
• M86: 51,466,754 km (0.046 R)
• M87: 54,295,650 km (0.083 R)
• M88: 54,902,269 km (0.055 R)
• M89: 56,647,627 km (0.103 R)
• M90: 58,677,072 km (0.072 R)
• M91: 58,854,794 km (0.115 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: 509 - 16,412 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit