🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 228.3

Radius: 12.7

Gravity: 1.42 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.43 AU - 0.61 AU

Year: 254 Days

Day: 10.6 Hours

Environment

Temp: -135 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 25,662,252 km

• M1: 160,668 km (0.046 R)
• M2: 241,301 km (0.057 R)
• M3: 323,730 km (0.042 R)
• M4: 410,048 km (0.078 R)
• M5: 530,624 km (0.057 R)
• M6: 658,829 km (0.05 R)
• M7: 766,839 km (0.101 R)
• M8: 899,831 km (0.117 R)
• M9: 1,033,123 km (0.049 R)
• M10: 1,112,559 km (0.084 R)
• M11: 1,278,015 km (0.067 R)
• M12: 1,363,884 km (0.112 R)
• M13: 1,448,855 km (0.1 R)
• M14: 1,574,817 km (0.117 R)
• M15: 1,660,836 km (0.037 R)
• M16: 1,865,934 km (0.065 R)
• M17: 2,039,917 km (0.06 R)
• M18: 2,123,392 km (0.11 R)
• M19: 2,335,522 km (0.069 R)
• M20: 2,446,224 km (0.111 R)
• M21: 2,724,776 km (0.079 R)
• M22: 2,841,612 km (0.032 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 935

Radius: 9

Gravity: 11.54 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.57 AU - 0.65 AU

Year: 323 Days

Day: 7.7 Hours

Environment

Temp: -153 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 25,662,252 km

• M1: 126,859 km (0.077 R)
• M2: 222,602 km (0.098 R)
• M3: 391,647 km (0.077 R)
• M4: 469,139 km (0.028 R)
• M5: 552,914 km (0.064 R)
• M6: 623,973 km (0.102 R)
• M7: 857,196 km (0.116 R)
• M8: 928,404 km (0.096 R)
• M9: 1,014,872 km (0.085 R)
• M10: 1,191,697 km (0.106 R)
• M11: 1,329,775 km (0.111 R)
• M12: 1,438,234 km (0.086 R)
• M13: 1,519,017 km (0.095 R)
• M14: 1,580,651 km (0.107 R)
• M15: 1,648,419 km (0.061 R)
• M16: 1,797,718 km (0.12 R)
• M17: 1,868,627 km (0.09 R)
• M18: 2,161,689 km (0.091 R)
• M19: 2,231,402 km (0.108 R)
• M20: 2,355,269 km (0.06 R)
• M21: 2,499,780 km (0.111 R)
• M22: 2,579,217 km (0.115 R)
• M23: 2,703,234 km (0.096 R)
• M24: 2,937,803 km (0.114 R)
• M25: 3,086,952 km (0.074 R)
• M26: 3,152,775 km (0.086 R)
• M27: 3,272,154 km (0.068 R)
• M28: 3,366,102 km (0.115 R)
• M29: 3,460,947 km (0.116 R)
• M30: 3,618,623 km (0.035 R)
• M31: 3,799,936 km (0.074 R)
• M32: 3,856,334 km (0.026 R)
• M33: 3,927,094 km (0.087 R)
• M34: 4,005,633 km (0.068 R)
• M35: 4,084,620 km (0.08 R)
• M36: 4,390,997 km (0.091 R)
• M37: 4,487,487 km (0.073 R)
• M38: 4,554,507 km (0.067 R)
• M39: 4,622,125 km (0.09 R)
• M40: 4,682,264 km (0.111 R)
• M41: 4,773,219 km (0.118 R)
• M42: 4,910,700 km (0.068 R)
• M43: 5,064,935 km (0.083 R)
• M44: 5,181,771 km (0.102 R)
• M45: 5,252,232 km (0.09 R)
• M46: 5,330,920 km (0.047 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 247.9

Radius: 10.6

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 1.04 AU - 1.2 AU

Year: 804 Days

Day: 13.1 Hours

Environment

Temp: -178 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 25,662,252 km

• M1: 132,394 km (0.086 R)
• M2: 203,603 km (0.027 R)
• M3: 286,181 km (0.108 R)
• M4: 352,901 km (0.106 R)
• M5: 420,520 km (0.089 R)
• M6: 501,003 km (0.103 R)
• M7: 619,634 km (0.117 R)
• M8: 705,952 km (0.059 R)
• M9: 1,025,493 km (0.101 R)
• M10: 1,135,298 km (0.099 R)
• M11: 1,222,963 km (0.061 R)
• M12: 1,307,635 km (0.1 R)
• M13: 1,438,683 km (0.088 R)
• M14: 1,511,537 km (0.101 R)
• M15: 1,597,107 km (0.071 R)
• M16: 1,678,638 km (0.078 R)
• M17: 1,767,648 km (0.101 R)
• M18: 1,888,673 km (0.051 R)
• M19: 1,981,424 km (0.114 R)
• M20: 2,203,876 km (0.091 R)
• M21: 2,321,609 km (0.105 R)
• M22: 2,414,510 km (0.091 R)
• M23: 2,583,705 km (0.119 R)
• M24: 2,898,309 km (0.091 R)
• M25: 3,195,710 km (0.044 R)
• M26: 3,321,970 km (0.114 R)
• M27: 3,434,767 km (0.12 R)
• M28: 3,503,133 km (0.03 R)
• M29: 3,618,025 km (0.119 R)
• M30: 3,687,588 km (0.097 R)
• M31: 3,954,321 km (0.117 R)
• M32: 4,090,155 km (0.099 R)
• M33: 4,219,408 km (0.083 R)
• M34: 4,317,245 km (0.11 R)
• M35: 4,506,935 km (0.106 R)
• M36: 4,674,185 km (0.096 R)
• M37: 5,066,581 km (0.105 R)
• M38: 5,205,557 km (0.11 R)
• M39: 5,301,749 km (0.106 R)
• M40: 5,372,209 km (0.108 R)
• M41: 5,514,028 km (0.116 R)
• M42: 5,692,947 km (0.069 R)
• M43: 5,783,304 km (0.12 R)
• M44: 5,892,211 km (0.118 R)
• M45: 6,269,497 km (0.059 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 345.6

Radius: 9.2

Gravity: 4.08 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 1.12 AU - 1.18 AU

Year: 836 Days

Day: 5.8 Hours

Environment

Temp: -178 °C

Axial Tilt: 56.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 25,662,252 km

• M1: 130,300 km (0.088 R)
• M2: 197,170 km (0.101 R)
• M3: 276,906 km (0.083 R)
• M4: 372,947 km (0.071 R)
• M5: 506,987 km (0.104 R)
• M6: 604,675 km (0.09 R)
• M7: 733,030 km (0.088 R)
• M8: 800,797 km (0.094 R)
• M9: 881,131 km (0.091 R)
• M10: 1,050,327 km (0.037 R)
• M11: 1,178,831 km (0.063 R)
• M12: 1,247,945 km (0.092 R)
• M13: 1,324,540 km (0.119 R)
• M14: 1,384,528 km (0.12 R)
• M15: 1,494,932 km (0.062 R)
• M16: 1,646,773 km (0.088 R)
• M17: 1,711,549 km (0.028 R)
• M18: 1,817,165 km (0.106 R)
• M19: 1,979,778 km (0.075 R)
• M20: 2,125,935 km (0.086 R)
• M21: 2,211,057 km (0.062 R)
• M22: 2,275,832 km (0.065 R)
• M23: 2,370,378 km (0.103 R)
• M24: 2,481,081 km (0.084 R)
• M25: 2,646,686 km (0.062 R)
• M26: 3,100,715 km (0.067 R)
• M27: 3,238,495 km (0.106 R)
• M28: 3,295,791 km (0.101 R)
• M29: 3,386,597 km (0.116 R)
• M30: 3,478,300 km (0.083 R)
• M31: 3,604,561 km (0.111 R)
• M32: 3,766,725 km (0.079 R)
• M33: 3,827,013 km (0.097 R)
• M34: 3,896,426 km (0.068 R)
• M35: 4,054,102 km (0.06 R)
• M36: 4,151,640 km (0.101 R)
• M37: 4,339,834 km (0.095 R)
• M38: 4,439,466 km (0.089 R)
• M39: 4,539,996 km (0.06 R)
• M40: 4,604,323 km (0.088 R)
• M41: 4,706,050 km (0.099 R)
• M42: 4,789,825 km (0.042 R)
• M43: 4,949,446 km (0.058 R)
• M44: 5,044,141 km (0.108 R)
• M45: 5,274,073 km (0.051 R)
• M46: 5,361,139 km (0.118 R)
• M47: 5,419,482 km (0.107 R)
• M48: 5,477,975 km (0.079 R)
• M49: 5,566,238 km (0.087 R)
• M50: 5,734,236 km (0.114 R)
• M51: 5,833,719 km (0.032 R)
• M52: 6,004,410 km (0.108 R)
• M53: 6,064,997 km (0.109 R)
• M54: 6,526,207 km (0.076 R)
• M55: 6,661,593 km (0.064 R)
• M56: 6,776,784 km (0.102 R)
• M57: 6,882,100 km (0.041 R)
• M58: 7,126,543 km (0.107 R)
• M59: 7,255,198 km (0.056 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 211.6

Radius: 14.3

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 1.27 AU - 1.41 AU

Year: 1052 Days

Day: 11.2 Hours

Environment

Temp: -182 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 25,662,252 km

• M1: 182,809 km (0.112 R)
• M2: 325,375 km (0.081 R)
• M3: 445,353 km (0.073 R)
• M4: 562,787 km (0.113 R)
• M5: 779,704 km (0.1 R)
• M6: 884,871 km (0.084 R)
• M7: 980,165 km (0.104 R)
• M8: 1,079,498 km (0.078 R)
• M9: 1,221,467 km (0.115 R)
• M10: 1,393,504 km (0.118 R)
• M11: 1,519,166 km (0.075 R)
• M12: 1,763,011 km (0.065 R)
• M13: 1,906,475 km (0.088 R)
• M14: 2,067,592 km (0.073 R)
• M15: 2,198,640 km (0.116 R)
• M16: 2,311,138 km (0.119 R)
• M17: 2,527,456 km (0.083 R)
• M18: 2,683,038 km (0.096 R)
• M19: 2,780,875 km (0.075 R)
• M20: 2,941,693 km (0.061 R)
• M21: 3,042,970 km (0.1 R)
• M22: 3,137,367 km (0.053 R)
• M23: 3,264,824 km (0.036 R)
• M24: 3,443,145 km (0.11 R)
• M25: 3,616,379 km (0.111 R)
• M26: 3,851,846 km (0.064 R)
• M27: 4,144,759 km (0.106 R)
• M28: 4,258,752 km (0.083 R)
• M29: 4,534,760 km (0.069 R)
• M30: 4,643,219 km (0.093 R)
• M31: 4,853,553 km (0.062 R)
• M32: 4,946,154 km (0.101 R)
• M33: 5,048,479 km (0.056 R)
• M34: 5,160,977 km (0.093 R)
• M35: 5,436,536 km (0.069 R)
• M36: 5,561,600 km (0.075 R)
• M37: 5,775,525 km (0.099 R)
• M38: 5,893,408 km (0.115 R)
• M39: 6,121,545 km (0.116 R)
• M40: 6,362,697 km (0.11 R)
• M41: 6,464,124 km (0.11 R)
• M42: 6,627,634 km (0.06 R)
• M43: 6,720,236 km (0.086 R)
• M44: 6,865,046 km (0.042 R)
• M45: 7,031,848 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538.1

Radius: 13.2

Gravity: 3.09 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 1.39 AU - 2.23 AU

Year: 1652 Days

Day: 11.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 48 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (62)

Outer Limit: 25,662,252 km

• M1: 177,273 km (0.101 R)
• M2: 302,487 km (0.116 R)
• M3: 392,246 km (0.1 R)
• M4: 507,436 km (0.118 R)
• M5: 676,930 km (0.073 R)
• M6: 787,633 km (0.03 R)
• M7: 882,627 km (0.044 R)
• M8: 1,021,604 km (0.093 R)
• M9: 1,375,702 km (0.106 R)
• M10: 1,847,384 km (0.106 R)
• M11: 1,988,455 km (0.11 R)
• M12: 2,070,883 km (0.078 R)
• M13: 2,175,303 km (0.041 R)
• M14: 2,303,209 km (0.117 R)
• M15: 2,422,738 km (0.114 R)
• M16: 2,589,240 km (0.078 R)
• M17: 2,725,224 km (0.076 R)
• M18: 2,969,069 km (0.105 R)
• M19: 3,232,212 km (0.118 R)
• M20: 3,342,166 km (0.113 R)
• M21: 3,628,945 km (0.087 R)
• M22: 3,807,415 km (0.049 R)
• M23: 3,910,788 km (0.096 R)
• M24: 4,093,895 km (0.12 R)
• M25: 4,226,589 km (0.119 R)
• M26: 4,646,809 km (0.097 R)
• M27: 5,411,105 km (0.05 R)
• M28: 5,542,302 km (0.081 R)
• M29: 5,704,167 km (0.057 R)
• M30: 5,822,948 km (0.115 R)
• M31: 6,382,743 km (0.053 R)
• M32: 6,536,978 km (0.111 R)
• M33: 6,645,736 km (0.118 R)
• M34: 6,802,215 km (0.076 R)
• M35: 6,928,326 km (0.084 R)
• M36: 7,198,650 km (0.082 R)
• M37: 7,700,850 km (0.07 R)
• M38: 7,832,346 km (0.062 R)
• M39: 7,914,924 km (0.079 R)
• M40: 8,281,589 km (0.076 R)
• M41: 8,416,227 km (0.097 R)
• M42: 8,568,667 km (0.102 R)
• M43: 8,653,788 km (0.103 R)
• M44: 8,756,263 km (0.097 R)
• M45: 8,979,762 km (0.096 R)
• M46: 9,083,583 km (0.112 R)
• M47: 9,170,349 km (0.114 R)
• M48: 9,537,911 km (0.108 R)
• M49: 9,803,448 km (0.115 R)
• M50: 10,468,859 km (0.065 R)
• M51: 10,578,215 km (0.088 R)
• M52: 10,761,173 km (0.083 R)
• M53: 11,093,281 km (0.104 R)
• M54: 11,391,429 km (0.109 R)
• M55: 11,503,777 km (0.072 R)
• M56: 11,654,422 km (0.097 R)
• M57: 12,262,986 km (0.083 R)
• M58: 12,378,326 km (0.037 R)
• M59: 12,493,965 km (0.096 R)
• M60: 12,921,067 km (0.06 R)
• M61: 13,077,696 km (0.052 R)
• M62: 13,175,832 km (0.103 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 867.7

Radius: 9.2

Gravity: 10.25 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.81 AU - 2.65 AU

Year: 2259 Days

Day: 8.7 Hours

Environment

Temp: -211 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 25,662,252 km

• M1: 156,779 km (0.114 R)
• M2: 256,112 km (0.042 R)
• M3: 395,387 km (0.077 R)
• M4: 483,800 km (0.107 R)
• M5: 547,079 km (0.077 R)
• M6: 613,501 km (0.107 R)
• M7: 802,443 km (0.077 R)
• M8: 959,371 km (0.117 R)
• M9: 1,094,608 km (0.028 R)
• M10: 1,191,996 km (0.063 R)
• M11: 1,281,156 km (0.078 R)
• M12: 1,431,053 km (0.112 R)
• M13: 1,514,230 km (0.076 R)
• M14: 1,586,785 km (0.105 R)
• M15: 1,889,122 km (0.049 R)
• M16: 2,237,236 km (0.118 R)
• M17: 2,334,475 km (0.059 R)
• M18: 2,547,652 km (0.094 R)
• M19: 2,620,057 km (0.107 R)
• M20: 2,737,491 km (0.099 R)
• M21: 2,886,940 km (0.043 R)
• M22: 3,178,057 km (0.098 R)
• M23: 3,559,382 km (0.075 R)
• M24: 3,624,457 km (0.119 R)
• M25: 3,689,831 km (0.08 R)
• M26: 4,261,744 km (0.117 R)
• M27: 4,487,637 km (0.119 R)
• M28: 4,771,274 km (0.038 R)
• M29: 5,079,147 km (0.094 R)
• M30: 5,170,850 km (0.055 R)
• M31: 5,430,852 km (0.112 R)
• M32: 5,562,348 km (0.085 R)
• M33: 5,752,188 km (0.071 R)
• M34: 5,924,824 km (0.076 R)
• M35: 6,373,916 km (0.091 R)
• M36: 6,473,100 km (0.109 R)
• M37: 6,692,859 km (0.119 R)
• M38: 6,813,884 km (0.103 R)
• M39: 7,017,038 km (0.097 R)
• M40: 8,148,596 km (0.109 R)
• M41: 8,234,764 km (0.115 R)
• M42: 8,451,233 km (0.116 R)
• M43: 8,669,645 km (0.073 R)
• M44: 8,779,600 km (0.101 R)
• M45: 8,890,003 km (0.097 R)
• M46: 9,000,855 km (0.076 R)
• M47: 9,584,736 km (0.113 R)
• M48: 10,203,921 km (0.106 R)
• M49: 10,483,370 km (0.067 R)
• M50: 10,553,531 km (0.107 R)
• M51: 10,907,181 km (0.119 R)
• M52: 11,312,591 km (0.097 R)
• M53: 11,869,095 km (0.077 R)
• M54: 11,966,782 km (0.116 R)
• M55: 12,040,085 km (0.067 R)
• M56: 12,187,439 km (0.059 R)
• M57: 12,384,909 km (0.107 R)
• M58: 12,533,609 km (0.115 R)
• M59: 13,109,261 km (0.101 R)
• M60: 13,540,253 km (0.096 R)
• M61: 13,924,420 km (0.063 R)
• M62: 14,079,104 km (0.093 R)
• M63: 14,468,358 km (0.112 R)
• M64: 14,677,346 km (0.074 R)
• M65: 14,782,214 km (0.095 R)
• M66: 15,310,444 km (0.097 R)
• M67: 15,844,958 km (0.101 R)
• M68: 16,060,379 km (0.111 R)
• M69: 16,358,228 km (0.105 R)
• M70: 16,630,646 km (0.107 R)
• M71: 16,986,988 km (0.034 R)
• M72: 17,875,001 km (0.113 R)
• M73: 17,958,925 km (0.049 R)
• M74: 18,183,621 km (0.091 R)
• M75: 18,381,090 km (0.032 R)
• M76: 18,465,912 km (0.098 R)
• M77: 19,005,961 km (0.088 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 28.5

Radius: 7.4

Gravity: 0.52 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 8.28 AU - 10.3 AU

Year: 19205 Days

Day: 15.5 Hours

Environment

Temp: -230 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (58)

Outer Limit: 25,662,252 km

• M1: 134,339 km (0.12 R)
• M2: 187,147 km (0.11 R)
• M3: 304,282 km (0.037 R)
• M4: 386,561 km (0.094 R)
• M5: 439,967 km (0.108 R)
• M6: 692,489 km (0.048 R)
• M7: 974,481 km (0.109 R)
• M8: 1,622,239 km (0.053 R)
• M9: 1,868,477 km (0.103 R)
• M10: 1,931,907 km (0.062 R)
• M11: 2,784,764 km (0.118 R)
• M12: 3,423,547 km (0.098 R)
• M13: 3,880,569 km (0.102 R)
• M14: 4,064,724 km (0.056 R)
• M15: 4,917,432 km (0.081 R)
• M16: 5,027,835 km (0.103 R)
• M17: 5,161,426 km (0.082 R)
• M18: 5,846,883 km (0.072 R)
• M19: 5,917,045 km (0.073 R)
• M20: 6,105,388 km (0.059 R)
• M21: 6,804,908 km (0.088 R)
• M22: 6,854,126 km (0.035 R)
• M23: 8,568,966 km (0.06 R)
• M24: 9,350,316 km (0.092 R)
• M25: 9,487,347 km (0.108 R)
• M26: 9,735,680 km (0.089 R)
• M27: 10,379,998 km (0.11 R)
• M28: 10,865,144 km (0.114 R)
• M29: 11,503,777 km (0.112 R)
• M30: 12,005,678 km (0.103 R)
• M31: 12,244,436 km (0.081 R)
• M32: 13,368,515 km (0.114 R)
• M33: 13,584,833 km (0.095 R)
• M34: 15,228,315 km (0.099 R)
• M35: 15,486,671 km (0.094 R)
• M36: 16,866,711 km (0.09 R)
• M37: 17,000,152 km (0.098 R)
• M38: 17,335,401 km (0.091 R)
• M39: 17,537,658 km (0.062 R)
• M40: 18,560,458 km (0.118 R)
• M41: 19,078,964 km (0.09 R)
• M42: 19,148,527 km (0.096 R)
• M43: 19,287,803 km (0.076 R)
• M44: 19,672,419 km (0.101 R)
• M45: 20,024,423 km (0.093 R)
• M46: 20,130,488 km (0.069 R)
• M47: 20,591,848 km (0.064 R)
• M48: 20,663,206 km (0.115 R)
• M49: 20,877,580 km (0.093 R)
• M50: 21,056,798 km (0.103 R)
• M51: 21,128,605 km (0.101 R)
• M52: 21,200,561 km (0.045 R)
• M53: 23,024,907 km (0.109 R)
• M54: 23,955,855 km (0.115 R)
• M55: 24,936,918 km (0.028 R)
• M56: 25,127,206 km (0.111 R)
• M57: 25,356,091 km (0.098 R)
• M58: 25,508,980 km (0.112 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 267 - 11,162 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit