🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.8 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.33

Radius: 0.64

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.71 AU - 0.89 AU

Year: 298 Days

Day: 38.4 Hours

Environment

Temp: -4 °C

Axial Tilt: 41.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.66

Radius: 1.48

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.95 AU - 0.95 AU

Year: 385 Days

Day: 16.9 Hours

Environment

Temp: -45 °C

Axial Tilt: 29.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 80,709,085 km

• M1: 37,549 km (0.115 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.31

Radius: 1.4

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 1.64 AU - 2.16 AU

Year: 1090 Days

Day: 38.5 Hours

Environment

Temp: -113 °C

Axial Tilt: 140.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 80,709,085 km

• M1: 174,282 km (0.103 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.58

Radius: 1.67

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 2.34 AU - 3.12 AU

Year: 1878 Days

Day: 40.2 Hours

Environment

Temp: -125 °C

Axial Tilt: 15.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 100.6

Radius: 13.9

Gravity: 0.52 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 7.58 AU - 8.66 AU

Year: 9631 Days

Day: 5.1 Hours

Environment

Temp: -190 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (73)

Outer Limit: 80,709,085 km

• M1: 181,462 km (0.074 R)
• M2: 626,366 km (0.104 R)
• M3: 716,723 km (0.09 R)
• M4: 834,158 km (0.119 R)
• M5: 1,066,334 km (0.113 R)
• M6: 1,165,517 km (0.064 R)
• M7: 1,334,114 km (0.116 R)
• M8: 1,428,360 km (0.088 R)
• M9: 1,799,363 km (0.109 R)
• M10: 1,950,457 km (0.092 R)
• M11: 2,314,279 km (0.101 R)
• M12: 2,496,040 km (0.11 R)
• M13: 2,998,540 km (0.086 R)
• M14: 3,513,755 km (0.091 R)
• M15: 3,723,940 km (0.103 R)
• M16: 3,859,924 km (0.029 R)
• M17: 4,523,241 km (0.081 R)
• M18: 5,006,742 km (0.111 R)
• M19: 5,178,929 km (0.117 R)
• M20: 5,573,418 km (0.103 R)
• M21: 5,684,719 km (0.053 R)
• M22: 5,819,357 km (0.097 R)
• M23: 5,977,781 km (0.089 R)
• M24: 6,625,839 km (0.114 R)
• M25: 6,910,524 km (0.099 R)
• M26: 7,126,693 km (0.094 R)
• M27: 7,590,446 km (0.053 R)
• M28: 7,788,664 km (0.061 R)
• M29: 7,888,445 km (0.083 R)
• M30: 8,038,941 km (0.066 R)
• M31: 8,342,774 km (0.094 R)
• M32: 9,356,300 km (0.067 R)
• M33: 9,489,143 km (0.063 R)
• M34: 10,189,709 km (0.063 R)
• M35: 10,491,149 km (0.117 R)
• M36: 10,601,403 km (0.102 R)
• M37: 10,990,806 km (0.102 R)
• M38: 11,243,477 km (0.066 R)
• M39: 11,413,121 km (0.118 R)
• M40: 11,640,510 km (0.097 R)
• M41: 11,754,802 km (0.119 R)
• M42: 12,128,947 km (0.045 R)
• M43: 12,331,951 km (0.042 R)
• M44: 12,623,966 km (0.12 R)
• M45: 12,712,079 km (0.074 R)
• M46: 12,859,283 km (0.097 R)
• M47: 13,334,257 km (0.072 R)
• M48: 13,543,843 km (0.059 R)
• M49: 13,815,064 km (0.11 R)
• M50: 13,905,870 km (0.102 R)
• M51: 14,270,889 km (0.039 R)
• M52: 14,793,584 km (0.091 R)
• M53: 14,886,484 km (0.094 R)
• M54: 15,010,650 km (0.111 R)
• M55: 15,135,265 km (0.065 R)
• M56: 15,447,925 km (0.1 R)
• M57: 16,303,176 km (0.096 R)
• M58: 16,752,718 km (0.106 R)
• M59: 17,532,870 km (0.092 R)
• M60: 17,664,068 km (0.066 R)
• M61: 17,762,653 km (0.088 R)
• M62: 18,591,575 km (0.062 R)
• M63: 18,725,315 km (0.112 R)
• M64: 19,433,063 km (0.113 R)
• M65: 20,459,154 km (0.083 R)
• M66: 21,362,726 km (0.038 R)
• M67: 21,784,292 km (0.078 R)
• M68: 23,029,096 km (0.077 R)
• M69: 23,533,540 km (0.069 R)
• M70: 23,750,906 km (0.068 R)
• M71: 24,005,222 km (0.055 R)
• M72: 24,260,586 km (0.072 R)
• M73: 24,590,150 km (0.035 R)

Planet 6 - Gas Giant

Semi-Major Axis: 8.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 258.1

Radius: 11.4

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 7.63 AU - 9.99 AU

Year: 10885 Days

Day: 11.5 Hours

Environment

Temp: -197 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (63)

Outer Limit: 80,709,085 km

• M1: 370,554 km (0.096 R)
• M2: 803,191 km (0.096 R)
• M3: 1,295,667 km (0.097 R)
• M4: 1,602,193 km (0.113 R)
• M5: 1,773,932 km (0.055 R)
• M6: 2,135,809 km (0.066 R)
• M7: 2,390,125 km (0.07 R)
• M8: 2,609,735 km (0.045 R)
• M9: 3,163,995 km (0.086 R)
• M10: 3,856,035 km (0.078 R)
• M11: 4,432,286 km (0.114 R)
• M12: 4,703,207 km (0.105 R)
• M13: 4,979,515 km (0.107 R)
• M14: 5,147,962 km (0.09 R)
• M15: 5,490,541 km (0.094 R)
• M16: 5,664,673 km (0.11 R)
• M17: 6,137,851 km (0.025 R)
• M18: 6,440,188 km (0.097 R)
• M19: 6,685,529 km (0.085 R)
• M20: 7,665,395 km (0.118 R)
• M21: 7,925,546 km (0.064 R)
• M22: 8,488,034 km (0.051 R)
• M23: 8,926,954 km (0.08 R)
• M24: 9,029,428 km (0.114 R)
• M25: 9,132,052 km (0.053 R)
• M26: 9,756,773 km (0.039 R)
• M27: 10,180,883 km (0.058 R)
• M28: 10,395,257 km (0.071 R)
• M29: 10,974,201 km (0.037 R)
• M30: 11,452,315 km (0.103 R)
• M31: 12,658,224 km (0.094 R)
• M32: 12,734,968 km (0.114 R)
• M33: 12,888,904 km (0.082 R)
• M34: 13,354,153 km (0.047 R)
• M35: 13,785,743 km (0.118 R)
• M36: 14,541,661 km (0.116 R)
• M37: 15,066,750 km (0.097 R)
• M38: 15,352,182 km (0.112 R)
• M39: 15,886,695 km (0.108 R)
• M40: 16,595,041 km (0.088 R)
• M41: 16,805,376 km (0.12 R)
• M42: 18,085,784 km (0.097 R)
• M43: 18,476,085 km (0.07 R)
• M44: 19,176,652 km (0.087 R)
• M45: 19,975,205 km (0.093 R)
• M46: 20,784,679 km (0.042 R)
• M47: 21,330,412 km (0.096 R)
• M48: 22,296,515 km (0.087 R)
• M49: 23,276,980 km (0.041 R)
• M50: 24,462,393 km (0.096 R)
• M51: 25,086,516 km (0.105 R)
• M52: 25,570,315 km (0.037 R)
• M53: 28,185,136 km (0.096 R)
• M54: 28,335,781 km (0.086 R)
• M55: 28,991,170 km (0.107 R)
• M56: 29,651,644 km (0.112 R)
• M57: 30,163,119 km (0.091 R)
• M58: 30,832,271 km (0.093 R)
• M59: 31,506,359 km (0.119 R)
• M60: 33,080,577 km (0.092 R)
• M61: 33,398,473 km (0.097 R)
• M62: 35,057,064 km (0.099 R)
• M63: 36,250,406 km (0.09 R)

Planet 7 - Ice Giant

Semi-Major Axis: 12.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 726.4

Radius: 6.1

Gravity: 19.52 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 11.18 AU - 13.18 AU

Year: 17694 Days

Day: 18.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 80,709,085 km

• M1: 484,697 km (0.092 R)
• M2: 898,485 km (0.05 R)
• M3: 1,022,501 km (0.092 R)
• M4: 1,073,664 km (0.117 R)
• M5: 1,908,869 km (0.113 R)
• M6: 2,134,462 km (0.097 R)
• M7: 2,506,213 km (0.081 R)
• M8: 2,789,103 km (0.119 R)
• M9: 3,308,656 km (0.109 R)
• M10: 3,737,703 km (0.088 R)
• M11: 4,225,541 km (0.101 R)
• M12: 4,477,015 km (0.076 R)
• M13: 4,863,277 km (0.113 R)
• M14: 5,038,456 km (0.045 R)
• M15: 5,713,591 km (0.048 R)
• M16: 5,945,019 km (0.061 R)
• M17: 6,273,985 km (0.12 R)
• M18: 7,699,354 km (0.031 R)
• M19: 8,369,402 km (0.091 R)
• M20: 8,632,246 km (0.117 R)
• M21: 9,545,541 km (0.103 R)
• M22: 10,264,658 km (0.119 R)
• M23: 10,829,539 km (0.118 R)
• M24: 11,058,424 km (0.11 R)
• M25: 11,637,368 km (0.12 R)
• M26: 11,930,430 km (0.079 R)
• M27: 12,107,554 km (0.028 R)
• M28: 13,740,116 km (0.114 R)
• M29: 13,863,683 km (0.08 R)
• M30: 14,112,166 km (0.081 R)
• M31: 14,174,548 km (0.092 R)
• M32: 14,424,825 km (0.113 R)
• M33: 14,866,288 km (0.037 R)
• M34: 14,993,297 km (0.097 R)
• M35: 15,504,623 km (0.098 R)
• M36: 15,762,529 km (0.058 R)
• M37: 15,891,931 km (0.085 R)
• M38: 17,272,570 km (0.102 R)
• M39: 18,622,691 km (0.079 R)
• M40: 19,657,459 km (0.096 R)
• M41: 21,998,666 km (0.092 R)
• M42: 22,070,922 km (0.1 R)
• M43: 23,018,176 km (0.084 R)
• M44: 23,091,628 km (0.107 R)
• M45: 23,459,788 km (0.095 R)
• M46: 24,576,237 km (0.119 R)
• M47: 25,862,181 km (0.065 R)
• M48: 26,167,959 km (0.063 R)
• M49: 26,321,297 km (0.091 R)
• M50: 27,949,221 km (0.117 R)
• M51: 28,027,610 km (0.086 R)
• M52: 28,973,218 km (0.081 R)
• M53: 30,330,819 km (0.11 R)
• M54: 30,411,302 km (0.108 R)
• M55: 32,776,594 km (0.085 R)
• M56: 33,107,505 km (0.11 R)
• M57: 33,190,382 km (0.069 R)
• M58: 34,442,067 km (0.088 R)
• M59: 35,454,396 km (0.118 R)
• M60: 36,391,028 km (0.11 R)
• M61: 37,077,234 km (0.069 R)
• M62: 37,335,739 km (0.119 R)
• M63: 37,594,693 km (0.08 R)
• M64: 37,681,160 km (0.086 R)
• M65: 37,854,395 km (0.083 R)
• M66: 39,161,431 km (0.101 R)
• M67: 39,249,245 km (0.075 R)
• M68: 42,178,671 km (0.111 R)
• M69: 43,351,967 km (0.042 R)
• M70: 43,805,996 km (0.069 R)
• M71: 45,085,806 km (0.117 R)
• M72: 46,192,681 km (0.085 R)
• M73: 49,376,722 km (0.067 R)
• M74: 50,231,375 km (0.071 R)
• M75: 51,666,617 km (0.081 R)
• M76: 52,341,004 km (0.08 R)
• M77: 52,630,924 km (0.038 R)
• M78: 54,186,144 km (0.114 R)
• M79: 55,362,432 km (0.093 R)
• M80: 55,855,058 km (0.066 R)
• M81: 56,745,315 km (0.103 R)
• M82: 58,640,271 km (0.099 R)
• M83: 59,343,680 km (0.102 R)
• M84: 59,847,825 km (0.111 R)
• M85: 60,252,188 km (0.055 R)
• M86: 60,556,021 km (0.1 R)
• M87: 60,860,303 km (0.047 R)
• M88: 67,683,163 km (0.088 R)
• M89: 67,998,964 km (0.091 R)
• M90: 69,904,243 km (0.092 R)
• M91: 70,117,120 km (0.099 R)
• M92: 70,756,801 km (0.102 R)
• M93: 71,505,389 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 196.8

Radius: 4.5

Gravity: 9.72 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 11.91 AU - 17.91 AU

Year: 23964 Days

Day: 22.3 Hours

Environment

Temp: -199 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (73)

Outer Limit: 80,709,085 km

• M1: 159,920 km (0.055 R)
• M2: 364,869 km (0.087 R)
• M3: 765,941 km (0.103 R)
• M4: 1,171,950 km (0.026 R)
• M5: 1,739,075 km (0.119 R)
• M6: 2,036,476 km (0.117 R)
• M7: 2,800,472 km (0.108 R)
• M8: 3,180,152 km (0.092 R)
• M9: 3,745,482 km (0.079 R)
• M10: 3,952,226 km (0.093 R)
• M11: 4,022,088 km (0.085 R)
• M12: 4,413,137 km (0.05 R)
• M13: 5,003,450 km (0.059 R)
• M14: 6,792,192 km (0.026 R)
• M15: 7,256,544 km (0.117 R)
• M16: 7,342,114 km (0.098 R)
• M17: 8,710,336 km (0.098 R)
• M18: 9,307,082 km (0.057 R)
• M19: 9,586,980 km (0.108 R)
• M20: 9,775,024 km (0.059 R)
• M21: 10,636,558 km (0.085 R)
• M22: 10,782,566 km (0.093 R)
• M23: 11,672,075 km (0.065 R)
• M24: 12,277,946 km (0.116 R)
• M25: 12,790,768 km (0.08 R)
• M26: 12,997,811 km (0.069 R)
• M27: 13,049,721 km (0.074 R)
• M28: 13,258,261 km (0.085 R)
• M29: 13,467,848 km (0.114 R)
• M30: 13,625,673 km (0.099 R)
• M31: 13,678,481 km (0.097 R)
• M32: 14,424,227 km (0.058 R)
• M33: 14,585,792 km (0.11 R)
• M34: 16,570,657 km (0.073 R)
• M35: 17,594,355 km (0.063 R)
• M36: 17,882,331 km (0.116 R)
• M37: 18,638,249 km (0.101 R)
• M38: 19,108,734 km (0.118 R)
• M39: 19,464,179 km (0.075 R)
• M40: 19,881,407 km (0.088 R)
• M41: 21,641,726 km (0.042 R)
• M42: 21,826,778 km (0.086 R)
• M43: 25,438,520 km (0.106 R)
• M44: 25,764,194 km (0.096 R)
• M45: 29,230,676 km (0.08 R)
• M46: 29,435,027 km (0.117 R)
• M47: 30,326,331 km (0.111 R)
• M48: 30,395,295 km (0.098 R)
• M49: 31,505,162 km (0.117 R)
• M50: 32,346,351 km (0.031 R)
• M51: 33,479,255 km (0.081 R)
• M52: 34,409,305 km (0.108 R)
• M53: 34,625,175 km (0.107 R)
• M54: 36,587,750 km (0.047 R)
• M55: 42,225,345 km (0.103 R)
• M56: 42,997,270 km (0.06 R)
• M57: 43,229,745 km (0.087 R)
• M58: 43,307,237 km (0.112 R)
• M59: 44,476,494 km (0.119 R)
• M60: 44,633,273 km (0.118 R)
• M61: 44,711,662 km (0.072 R)
• M62: 46,925,710 km (0.07 R)
• M63: 47,244,952 km (0.118 R)
• M64: 47,725,012 km (0.087 R)
• M65: 51,295,315 km (0.118 R)
• M66: 52,036,123 km (0.083 R)
• M67: 53,195,507 km (0.104 R)
• M68: 53,361,860 km (0.109 R)
• M69: 53,611,688 km (0.108 R)
• M70: 53,861,816 km (0.111 R)
• M71: 54,196,017 km (0.083 R)
• M72: 54,698,666 km (0.072 R)
• M73: 55,624,079 km (0.104 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 474.9

Radius: 5.7

Gravity: 14.62 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 14.83 AU - 16.85 AU

Year: 26241 Days

Day: 16.3 Hours

Environment

Temp: -216 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 80,709,085 km

• M1: 78,090 km (0.073 R)
• M2: 511,026 km (0.067 R)
• M3: 715,975 km (0.091 R)
• M4: 840,590 km (0.086 R)
• M5: 972,386 km (0.113 R)
• M6: 1,315,713 km (0.052 R)
• M7: 1,793,828 km (0.11 R)
• M8: 2,814,534 km (0.057 R)
• M9: 3,093,385 km (0.089 R)
• M10: 3,464,986 km (0.107 R)
• M11: 3,549,509 km (0.05 R)
• M12: 4,070,708 km (0.066 R)
• M13: 4,204,747 km (0.099 R)
• M14: 4,896,787 km (0.097 R)
• M15: 5,673,200 km (0.068 R)
• M16: 6,126,631 km (0.106 R)
• M17: 6,591,731 km (0.107 R)
• M18: 6,961,238 km (0.094 R)
• M19: 7,068,051 km (0.088 R)
• M20: 7,121,756 km (0.105 R)
• M21: 7,610,343 km (0.084 R)
• M22: 8,619,829 km (0.081 R)
• M23: 9,611,214 km (0.104 R)
• M24: 10,211,251 km (0.107 R)
• M25: 10,332,575 km (0.1 R)
• M26: 14,259,370 km (0.085 R)
• M27: 14,531,339 km (0.119 R)
• M28: 16,768,126 km (0.103 R)
• M29: 16,983,248 km (0.106 R)
• M30: 17,199,267 km (0.062 R)
• M31: 17,852,860 km (0.062 R)
• M32: 18,440,630 km (0.062 R)
• M33: 18,662,783 km (0.079 R)
• M34: 18,736,984 km (0.097 R)
• M35: 18,811,334 km (0.117 R)
• M36: 19,184,281 km (0.104 R)
• M37: 19,259,230 km (0.056 R)
• M38: 21,240,654 km (0.084 R)
• M39: 21,863,280 km (0.062 R)
• M40: 22,491,890 km (0.115 R)
• M41: 22,967,312 km (0.079 R)
• M42: 23,046,749 km (0.102 R)
• M43: 24,008,513 km (0.076 R)
• M44: 24,575,489 km (0.102 R)
• M45: 25,311,062 km (0.096 R)
• M46: 26,803,600 km (0.076 R)
• M47: 27,055,224 km (0.103 R)
• M48: 27,645,088 km (0.101 R)
• M49: 27,814,433 km (0.117 R)
• M50: 28,580,823 km (0.105 R)
• M51: 29,440,412 km (0.106 R)
• M52: 31,449,362 km (0.118 R)
• M53: 31,626,187 km (0.106 R)
• M54: 33,592,351 km (0.051 R)
• M55: 33,954,079 km (0.105 R)
• M56: 34,681,424 km (0.112 R)
• M57: 36,244,123 km (0.047 R)
• M58: 37,267,373 km (0.098 R)
• M59: 38,678,081 km (0.082 R)
• M60: 39,437,589 km (0.12 R)
• M61: 39,532,733 km (0.105 R)
• M62: 40,393,819 km (0.086 R)
• M63: 42,817,603 km (0.08 R)
• M64: 42,915,590 km (0.113 R)
• M65: 43,406,271 km (0.057 R)
• M66: 43,701,727 km (0.12 R)
• M67: 44,492,501 km (0.12 R)
• M68: 45,188,430 km (0.082 R)
• M69: 46,389,701 km (0.094 R)
• M70: 47,703,021 km (0.047 R)
• M71: 49,644,203 km (0.097 R)
• M72: 49,953,123 km (0.091 R)
• M73: 50,159,418 km (0.115 R)
• M74: 51,506,996 km (0.074 R)
• M75: 51,819,655 km (0.095 R)
• M76: 53,181,893 km (0.089 R)
• M77: 53,814,543 km (0.081 R)
• M78: 54,237,755 km (0.08 R)
• M79: 55,193,985 km (0.12 R)
• M80: 55,300,498 km (0.074 R)
• M81: 56,584,946 km (0.063 R)
• M82: 58,638,476 km (0.093 R)
• M83: 62,152,081 km (0.061 R)
• M84: 63,598,692 km (0.113 R)
• M85: 64,831,528 km (0.057 R)
• M86: 65,394,615 km (0.059 R)
• M87: 66,072,293 km (0.12 R)
• M88: 68,005,098 km (0.097 R)
• M89: 68,691,602 km (0.09 R)
• M90: 70,071,643 km (0.063 R)
• M91: 70,880,967 km (0.08 R)
• M92: 70,996,756 km (0.067 R)
• M93: 76,156,686 km (0.058 R)
• M94: 76,275,317 km (0.115 R)
• M95: 79,261,889 km (0.086 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 312 - 14,567 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit