🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 664.2

Radius: 11.2

Gravity: 5.29 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.83 AU - 0.87 AU

Year: 541 Days

Day: 7.9 Hours

Environment

Temp: -167 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 31,470,250 km

• M1: 141,669 km (0.112 R)
• M2: 234,569 km (0.07 R)
• M3: 422,464 km (0.099 R)
• M4: 533,167 km (0.072 R)
• M5: 617,540 km (0.076 R)
• M6: 702,811 km (0.094 R)
• M7: 783,444 km (0.069 R)
• M8: 920,775 km (0.054 R)
• M9: 1,045,988 km (0.075 R)
• M10: 1,145,172 km (0.1 R)
• M11: 1,264,401 km (0.025 R)
• M12: 1,468,602 km (0.093 R)
• M13: 1,557,015 km (0.079 R)
• M14: 1,677,740 km (0.113 R)
• M15: 1,858,754 km (0.07 R)
• M16: 2,000,273 km (0.104 R)
• M17: 2,105,590 km (0.079 R)
• M18: 2,226,465 km (0.074 R)
• M19: 2,377,260 km (0.079 R)
• M20: 2,631,576 km (0.09 R)
• M21: 2,711,013 km (0.102 R)
• M22: 2,969,518 km (0.091 R)
• M23: 3,075,134 km (0.081 R)
• M24: 3,205,134 km (0.027 R)
• M25: 3,290,256 km (0.089 R)
• M26: 3,368,346 km (0.086 R)
• M27: 3,470,671 km (0.091 R)
• M28: 3,841,524 km (0.119 R)
• M29: 3,940,408 km (0.112 R)
• M30: 4,132,342 km (0.08 R)
• M31: 4,242,296 km (0.108 R)
• M32: 4,413,137 km (0.118 R)
• M33: 4,912,944 km (0.062 R)
• M34: 5,020,505 km (0.1 R)
• M35: 5,110,712 km (0.044 R)
• M36: 5,274,522 km (0.113 R)
• M37: 5,357,100 km (0.113 R)
• M38: 5,654,052 km (0.078 R)
• M39: 6,100,152 km (0.093 R)
• M40: 6,244,963 km (0.03 R)
• M41: 6,351,926 km (0.099 R)
• M42: 6,449,613 km (0.116 R)
• M43: 6,785,759 km (0.105 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 551.2

Radius: 11.4

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.67 AU - 1.11 AU

Year: 580 Days

Day: 9.5 Hours

Environment

Temp: -173 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 31,470,250 km

• M1: 150,346 km (0.052 R)
• M2: 228,436 km (0.053 R)
• M3: 300,841 km (0.056 R)
• M4: 386,710 km (0.078 R)
• M5: 462,257 km (0.08 R)
• M6: 559,945 km (0.077 R)
• M7: 752,776 km (0.095 R)
• M8: 872,006 km (0.093 R)
• M9: 948,899 km (0.102 R)
• M10: 1,028,186 km (0.102 R)
• M11: 1,162,375 km (0.057 R)
• M12: 1,253,331 km (0.062 R)
• M13: 1,380,639 km (0.087 R)
• M14: 1,454,540 km (0.046 R)
• M15: 1,630,467 km (0.092 R)
• M16: 1,863,690 km (0.119 R)
• M17: 2,010,296 km (0.088 R)
• M18: 2,127,731 km (0.032 R)
• M19: 2,200,585 km (0.067 R)
• M20: 2,550,045 km (0.053 R)
• M21: 2,656,110 km (0.076 R)
• M22: 2,756,640 km (0.078 R)
• M23: 2,851,036 km (0.095 R)
• M24: 3,316,734 km (0.094 R)
• M25: 3,464,238 km (0.039 R)
• M26: 3,621,914 km (0.113 R)
• M27: 3,830,603 km (0.093 R)
• M28: 4,051,410 km (0.082 R)
• M29: 4,126,059 km (0.102 R)
• M30: 4,352,550 km (0.084 R)
• M31: 4,522,942 km (0.085 R)
• M32: 4,687,051 km (0.039 R)
• M33: 4,861,781 km (0.082 R)
• M34: 5,065,533 km (0.114 R)
• M35: 5,137,041 km (0.075 R)
• M36: 5,390,161 km (0.119 R)
• M37: 5,481,416 km (0.073 R)
• M38: 5,749,495 km (0.12 R)
• M39: 5,908,518 km (0.083 R)
• M40: 5,983,915 km (0.094 R)
• M41: 6,126,182 km (0.082 R)
• M42: 6,221,626 km (0.066 R)
• M43: 6,452,605 km (0.083 R)
• M44: 6,598,612 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 383

Radius: 8.1

Gravity: 5.84 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.79 AU - 1.05 AU

Year: 609 Days

Day: 5.3 Hours

Environment

Temp: -176 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (50)

Outer Limit: 31,470,250 km

• M1: 117,734 km (0.105 R)
• M2: 169,943 km (0.083 R)
• M3: 308,172 km (0.057 R)
• M4: 436,078 km (0.102 R)
• M5: 500,106 km (0.076 R)
• M6: 598,691 km (0.059 R)
• M7: 666,907 km (0.077 R)
• M8: 750,981 km (0.069 R)
• M9: 825,331 km (0.105 R)
• M10: 934,837 km (0.072 R)
• M11: 1,059,153 km (0.095 R)
• M12: 1,153,549 km (0.087 R)
• M13: 1,225,057 km (0.063 R)
• M14: 1,308,533 km (0.094 R)
• M15: 1,361,789 km (0.114 R)
• M16: 1,475,933 km (0.09 R)
• M17: 1,565,093 km (0.119 R)
• M18: 1,673,402 km (0.038 R)
• M19: 1,813,874 km (0.063 R)
• M20: 1,897,649 km (0.092 R)
• M21: 1,988,754 km (0.085 R)
• M22: 2,044,255 km (0.117 R)
• M23: 2,169,319 km (0.109 R)
• M24: 2,277,628 km (0.034 R)
• M25: 2,342,254 km (0.119 R)
• M26: 2,519,827 km (0.082 R)
• M27: 2,951,117 km (0.117 R)
• M28: 3,050,151 km (0.117 R)
• M29: 3,114,328 km (0.08 R)
• M30: 3,576,735 km (0.067 R)
• M31: 3,652,133 km (0.096 R)
• M32: 3,712,870 km (0.072 R)
• M33: 3,812,352 km (0.041 R)
• M34: 3,998,153 km (0.116 R)
• M35: 4,092,100 km (0.098 R)
• M36: 4,258,453 km (0.116 R)
• M37: 4,370,651 km (0.076 R)
• M38: 4,459,513 km (0.096 R)
• M39: 4,729,537 km (0.074 R)
• M40: 4,904,117 km (0.082 R)
• M41: 4,979,664 km (0.093 R)
• M42: 5,064,038 km (0.038 R)
• M43: 5,208,549 km (0.056 R)
• M44: 5,268,538 km (0.096 R)
• M45: 5,380,287 km (0.059 R)
• M46: 5,475,581 km (0.119 R)
• M47: 5,729,598 km (0.1 R)
• M48: 5,906,872 km (0.077 R)
• M49: 5,978,380 km (0.027 R)
• M50: 6,068,138 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 430.9

Radius: 12.2

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 1.35 AU - 1.97 AU

Year: 1476 Days

Day: 9.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 31,470,250 km

• M1: 170,542 km (0.045 R)
• M2: 289,921 km (0.076 R)
• M3: 442,211 km (0.068 R)
• M4: 547,977 km (0.06 R)
• M5: 789,727 km (0.098 R)
• M6: 994,676 km (0.094 R)
• M7: 1,089,222 km (0.099 R)
• M8: 1,264,551 km (0.08 R)
• M9: 1,343,838 km (0.102 R)
• M10: 1,524,552 km (0.071 R)
• M11: 1,661,135 km (0.045 R)
• M12: 1,739,973 km (0.059 R)
• M13: 1,983,967 km (0.101 R)
• M14: 2,124,589 km (0.105 R)
• M15: 2,258,778 km (0.105 R)
• M16: 2,455,649 km (0.043 R)
• M17: 2,556,328 km (0.078 R)
• M18: 2,637,859 km (0.113 R)
• M19: 2,792,992 km (0.078 R)
• M20: 2,919,402 km (0.094 R)
• M21: 3,134,524 km (0.117 R)
• M22: 3,277,091 km (0.05 R)
• M23: 3,433,271 km (0.025 R)
• M24: 3,546,218 km (0.061 R)
• M25: 3,695,067 km (0.078 R)
• M26: 4,046,473 km (0.054 R)
• M27: 4,190,236 km (0.058 R)
• M28: 4,569,168 km (0.058 R)
• M29: 4,731,481 km (0.053 R)
• M30: 4,908,456 km (0.072 R)
• M31: 5,347,376 km (0.098 R)
• M32: 5,426,064 km (0.097 R)
• M33: 5,758,620 km (0.086 R)
• M34: 5,920,635 km (0.116 R)
• M35: 6,290,740 km (0.083 R)
• M36: 6,415,654 km (0.104 R)
• M37: 6,640,051 km (0.079 R)
• M38: 6,852,779 km (0.099 R)
• M39: 7,197,902 km (0.072 R)
• M40: 7,460,446 km (0.118 R)
• M41: 7,681,701 km (0.064 R)
• M42: 7,845,361 km (0.062 R)
• M43: 8,025,178 km (0.09 R)
• M44: 8,650,048 km (0.078 R)
• M45: 8,758,357 km (0.114 R)
• M46: 9,054,411 km (0.117 R)
• M47: 9,195,931 km (0.097 R)
• M48: 9,401,478 km (0.101 R)
• M49: 9,736,877 km (0.11 R)
• M50: 10,092,471 km (0.105 R)
• M51: 10,518,226 km (0.107 R)
• M52: 10,700,137 km (0.116 R)
• M53: 11,404,294 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 369.2

Radius: 12.8

Gravity: 2.25 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 4.69 AU - 5.47 AU

Year: 7903 Days

Day: 6.1 Hours

Environment

Temp: -224 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (67)

Outer Limit: 31,470,250 km

• M1: 167,550 km (0.101 R)
• M2: 395,387 km (0.108 R)
• M3: 981,512 km (0.088 R)
• M4: 1,085,183 km (0.037 R)
• M5: 1,177,335 km (0.117 R)
• M6: 1,288,337 km (0.04 R)
• M7: 1,369,868 km (0.034 R)
• M8: 1,538,614 km (0.088 R)
• M9: 1,786,947 km (0.113 R)
• M10: 1,897,499 km (0.071 R)
• M11: 2,343,151 km (0.095 R)
• M12: 2,505,764 km (0.08 R)
• M13: 2,885,893 km (0.095 R)
• M14: 4,012,364 km (0.105 R)
• M15: 4,558,696 km (0.054 R)
• M16: 4,944,958 km (0.05 R)
• M17: 5,422,474 km (0.095 R)
• M18: 5,942,626 km (0.06 R)
• M19: 6,166,424 km (0.108 R)
• M20: 6,593,676 km (0.118 R)
• M21: 7,001,330 km (0.09 R)
• M22: 7,089,742 km (0.079 R)
• M23: 7,597,777 km (0.103 R)
• M24: 8,335,145 km (0.084 R)
• M25: 8,712,430 km (0.1 R)
• M26: 9,321,294 km (0.094 R)
• M27: 9,418,832 km (0.077 R)
• M28: 9,680,179 km (0.06 R)
• M29: 9,877,947 km (0.108 R)
• M30: 10,852,129 km (0.066 R)
• M31: 11,023,269 km (0.118 R)
• M32: 11,541,925 km (0.073 R)
• M33: 12,746,935 km (0.116 R)
• M34: 13,254,671 km (0.047 R)
• M35: 13,584,683 km (0.083 R)
• M36: 13,917,389 km (0.115 R)
• M37: 14,028,840 km (0.112 R)
• M38: 14,553,180 km (0.072 R)
• M39: 15,045,806 km (0.062 R)
• M40: 15,621,010 km (0.118 R)
• M41: 15,969,722 km (0.043 R)
• M42: 16,125,454 km (0.113 R)
• M43: 16,242,589 km (0.039 R)
• M44: 17,630,408 km (0.039 R)
• M45: 17,952,941 km (0.034 R)
• M46: 18,562,852 km (0.075 R)
• M47: 20,138,716 km (0.045 R)
• M48: 20,475,909 km (0.077 R)
• M49: 20,900,019 km (0.114 R)
• M50: 21,155,832 km (0.12 R)
• M51: 21,627,663 km (0.077 R)
• M52: 22,800,511 km (0.074 R)
• M53: 23,240,179 km (0.088 R)
• M54: 25,936,381 km (0.09 R)
• M55: 26,303,345 km (0.107 R)
• M56: 26,579,652 km (0.101 R)
• M57: 26,810,631 km (0.085 R)
• M58: 27,042,358 km (0.051 R)
• M59: 28,777,394 km (0.06 R)
• M60: 29,586,569 km (0.109 R)
• M61: 31,569,040 km (0.033 R)
• M62: 31,715,796 km (0.095 R)
• M63: 32,206,477 km (0.067 R)
• M64: 32,502,232 km (0.088 R)
• M65: 32,600,966 km (0.104 R)
• M66: 33,195,618 km (0.07 R)
• M67: 33,344,767 km (0.107 R)

Planet 6 - Ice Giant

Semi-Major Axis: 5.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 506.6

Radius: 6.7

Gravity: 11.29 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 4.79 AU - 6.37 AU

Year: 9098 Days

Day: 19.6 Hours

Environment

Temp: -227 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 31,470,250 km

• M1: 112,348 km (0.114 R)
• M2: 253,568 km (0.114 R)
• M3: 680,222 km (0.1 R)
• M4: 756,367 km (0.053 R)
• M5: 803,490 km (0.105 R)
• M6: 1,002,455 km (0.091 R)
• M7: 1,585,438 km (0.047 R)
• M8: 1,771,688 km (0.089 R)
• M9: 1,835,416 km (0.103 R)
• M10: 1,965,267 km (0.108 R)
• M11: 2,075,670 km (0.062 R)
• M12: 2,142,989 km (0.103 R)
• M13: 2,756,341 km (0.118 R)
• M14: 2,830,392 km (0.091 R)
• M15: 2,880,208 km (0.084 R)
• M16: 3,185,088 km (0.026 R)
• M17: 3,473,812 km (0.108 R)
• M18: 3,716,310 km (0.061 R)
• M19: 3,853,342 km (0.041 R)
• M20: 3,908,693 km (0.12 R)
• M21: 3,964,194 km (0.091 R)
• M22: 4,019,994 km (0.087 R)
• M23: 4,217,613 km (0.097 R)
• M24: 5,039,055 km (0.084 R)
• M25: 5,099,642 km (0.077 R)
• M26: 5,908,817 km (0.07 R)
• M27: 6,069,036 km (0.09 R)
• M28: 6,263,214 km (0.112 R)
• M29: 6,492,248 km (0.089 R)
• M30: 6,558,221 km (0.095 R)
• M31: 6,790,846 km (0.092 R)
• M32: 7,161,848 km (0.11 R)
• M33: 7,504,876 km (0.119 R)
• M34: 7,608,847 km (0.116 R)
• M35: 8,602,027 km (0.09 R)
• M36: 8,893,145 km (0.085 R)
• M37: 10,166,671 km (0.112 R)
• M38: 10,281,712 km (0.09 R)
• M39: 10,358,755 km (0.106 R)
• M40: 10,552,035 km (0.071 R)
• M41: 11,138,908 km (0.114 R)
• M42: 12,879,479 km (0.088 R)
• M43: 13,590,667 km (0.111 R)
• M44: 14,015,077 km (0.102 R)
• M45: 14,746,311 km (0.103 R)
• M46: 14,833,078 km (0.103 R)
• M47: 15,226,071 km (0.08 R)
• M48: 16,515,306 km (0.095 R)
• M49: 16,605,513 km (0.103 R)
• M50: 16,741,199 km (0.114 R)
• M51: 17,013,467 km (0.07 R)
• M52: 17,746,795 km (0.106 R)
• M53: 18,350,273 km (0.113 R)
• M54: 18,443,772 km (0.095 R)
• M55: 19,149,575 km (0.07 R)
• M56: 19,244,420 km (0.103 R)
• M57: 19,768,461 km (0.098 R)
• M58: 19,960,096 km (0.103 R)
• M59: 21,123,519 km (0.096 R)
• M60: 21,270,424 km (0.08 R)
• M61: 22,209,150 km (0.086 R)
• M62: 22,258,817 km (0.11 R)
• M63: 22,358,599 km (0.118 R)
• M64: 22,608,427 km (0.026 R)
• M65: 24,126,546 km (0.111 R)
• M66: 24,229,021 km (0.119 R)
• M67: 24,331,495 km (0.112 R)
• M68: 24,382,807 km (0.113 R)
• M69: 25,156,976 km (0.101 R)
• M70: 25,729,787 km (0.077 R)
• M71: 25,781,996 km (0.115 R)
• M72: 25,834,355 km (0.031 R)
• M73: 25,991,583 km (0.072 R)
• M74: 26,517,719 km (0.079 R)
• M75: 26,729,250 km (0.092 R)
• M76: 28,063,663 km (0.109 R)
• M77: 29,201,205 km (0.104 R)
• M78: 29,912,842 km (0.079 R)
• M79: 29,967,894 km (0.101 R)
• M80: 30,408,909 km (0.119 R)
• M81: 32,138,410 km (0.071 R)
• M82: 32,986,630 km (0.119 R)
• M83: 33,100,324 km (0.069 R)
• M84: 33,785,034 km (0.099 R)
• M85: 35,226,259 km (0.082 R)
• M86: 35,808,494 km (0.064 R)
• M87: 36,159,301 km (0.114 R)
• M88: 36,511,305 km (0.118 R)
• M89: 36,805,415 km (0.043 R)
• M90: 37,573,899 km (0.078 R)
• M91: 37,811,460 km (0.11 R)
• M92: 39,247,151 km (0.062 R)
• M93: 39,790,042 km (0.106 R)
• M94: 40,335,475 km (0.118 R)
• M95: 40,517,835 km (0.111 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 186.5

Radius: 3.5

Gravity: 15.22 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 5.2 AU - 6.84 AU

Year: 10195 Days

Day: 18.8 Hours

Environment

Temp: -230 °C

Axial Tilt: 46.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (73)

Outer Limit: 31,470,250 km

• M1: 44,580 km (0.1 R)
• M2: 95,593 km (0.047 R)
• M3: 160,369 km (0.106 R)
• M4: 206,894 km (0.028 R)
• M5: 314,006 km (0.116 R)
• M6: 576,401 km (0.112 R)
• M7: 613,202 km (0.115 R)
• M8: 638,035 km (0.119 R)
• M9: 701,913 km (0.077 R)
• M10: 850,015 km (0.087 R)
• M11: 1,585,139 km (0.09 R)
• M12: 1,689,708 km (0.048 R)
• M13: 1,942,828 km (0.101 R)
• M14: 2,092,725 km (0.118 R)
• M15: 2,383,692 km (0.03 R)
• M16: 2,749,609 km (0.1 R)
• M17: 2,833,384 km (0.042 R)
• M18: 2,896,664 km (0.038 R)
• M19: 3,024,719 km (0.045 R)
• M20: 3,132,879 km (0.078 R)
• M21: 3,242,235 km (0.116 R)
• M22: 3,442,397 km (0.091 R)
• M23: 3,948,337 km (0.113 R)
• M24: 4,428,097 km (0.027 R)
• M25: 4,575,600 km (0.093 R)
• M26: 4,625,117 km (0.077 R)
• M27: 4,749,732 km (0.116 R)
• M28: 5,130,160 km (0.105 R)
• M29: 5,207,502 km (0.064 R)
• M30: 5,705,663 km (0.084 R)
• M31: 6,606,691 km (0.107 R)
• M32: 7,405,095 km (0.066 R)
• M33: 7,492,460 km (0.042 R)
• M34: 9,880,191 km (0.051 R)
• M35: 9,944,369 km (0.117 R)
• M36: 10,137,350 km (0.116 R)
• M37: 10,461,977 km (0.072 R)
• M38: 10,658,250 km (0.036 R)
• M39: 10,756,984 km (0.118 R)
• M40: 12,100,822 km (0.074 R)
• M41: 12,548,868 km (0.117 R)
• M42: 12,583,574 km (0.118 R)
• M43: 12,932,138 km (0.098 R)
• M44: 13,567,779 km (0.117 R)
• M45: 13,889,265 km (0.116 R)
• M46: 13,996,975 km (0.031 R)
• M47: 15,163,539 km (0.028 R)
• M48: 16,588,609 km (0.073 R)
• M49: 16,932,385 km (0.057 R)
• M50: 18,016,820 km (0.057 R)
• M51: 18,291,481 km (0.1 R)
• M52: 18,725,764 km (0.092 R)
• M53: 19,043,659 km (0.099 R)
• M54: 19,564,260 km (0.094 R)
• M55: 19,644,744 km (0.104 R)
• M56: 19,684,985 km (0.106 R)
• M57: 19,765,768 km (0.103 R)
• M58: 19,846,551 km (0.077 R)
• M59: 20,089,498 km (0.109 R)
• M60: 20,170,730 km (0.086 R)
• M61: 20,537,544 km (0.093 R)
• M62: 21,734,327 km (0.114 R)
• M63: 22,615,009 km (0.115 R)
• M64: 22,911,213 km (0.059 R)
• M65: 23,678,650 km (0.099 R)
• M66: 25,457,818 km (0.076 R)
• M67: 25,545,781 km (0.115 R)
• M68: 26,697,386 km (0.086 R)
• M69: 28,047,207 km (0.108 R)
• M70: 28,365,402 km (0.065 R)
• M71: 29,051,159 km (0.097 R)
• M72: 30,345,629 km (0.097 R)
• M73: 31,234,839 km (0.11 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: 238 - 14,488 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit