🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.14

Radius: 1.77

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 0.5 AU - 0.52 AU

Year: 153 Days

Day: 32 Hours

Environment

Temp: 133 °C

Axial Tilt: 22.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 81,058,208 km

• M1: 42,935 km (0.072 R)
• M2: 285,134 km (0.038 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.75

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 1.36 AU - 1.5 AU

Year: 716 Days

Day: 24 Hours

Environment

Temp: -84 °C

Axial Tilt: 23.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 81,058,208 km

• M1: 318,195 km (0.108 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.88

Radius: 0.95

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.54 AU - 2.56 AU

Year: 1230 Days

Day: 16.3 Hours

Environment

Temp: -118 °C

Axial Tilt: 45.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.32

Radius: 1.12

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 2.12 AU - 3.24 AU

Year: 1838 Days

Day: 15.2 Hours

Environment

Temp: -134 °C

Axial Tilt: 21.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 81,058,208 km

• M1: 1,336,507 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 458.7

Radius: 11.1

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 3.22 AU - 4.26 AU

Year: 3030 Days

Day: 12.1 Hours

Environment

Temp: -160 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (70)

Outer Limit: 81,058,208 km

• M1: 139,724 km (0.068 R)
• M2: 235,617 km (0.117 R)
• M3: 311,313 km (0.089 R)
• M4: 386,860 km (0.073 R)
• M5: 463,753 km (0.114 R)
• M6: 740,958 km (0.08 R)
• M7: 928,554 km (0.087 R)
• M8: 1,396,795 km (0.118 R)
• M9: 1,596,359 km (0.102 R)
• M10: 1,669,063 km (0.105 R)
• M11: 1,958,386 km (0.065 R)
• M12: 2,036,625 km (0.069 R)
• M13: 2,277,628 km (0.101 R)
• M14: 2,373,969 km (0.059 R)
• M15: 2,627,986 km (0.111 R)
• M16: 2,700,092 km (0.119 R)
• M17: 2,787,607 km (0.075 R)
• M18: 3,131,981 km (0.052 R)
• M19: 3,208,725 km (0.043 R)
• M20: 3,286,067 km (0.061 R)
• M21: 3,458,404 km (0.067 R)
• M22: 3,617,875 km (0.052 R)
• M23: 3,779,590 km (0.075 R)
• M24: 4,161,065 km (0.064 R)
• M25: 4,245,588 km (0.085 R)
• M26: 4,729,985 km (0.058 R)
• M27: 5,050,574 km (0.07 R)
• M28: 5,213,635 km (0.077 R)
• M29: 5,378,492 km (0.113 R)
• M30: 5,452,244 km (0.072 R)
• M31: 5,582,245 km (0.111 R)
• M32: 5,750,991 km (0.039 R)
• M33: 5,826,388 km (0.063 R)
• M34: 6,016,677 km (0.057 R)
• M35: 6,247,656 km (0.105 R)
• M36: 6,778,280 km (0.101 R)
• M37: 6,998,637 km (0.082 R)
• M38: 7,079,270 km (0.11 R)
• M39: 7,364,254 km (0.101 R)
• M40: 7,882,461 km (0.103 R)
• M41: 8,606,216 km (0.117 R)
• M42: 8,910,498 km (0.112 R)
• M43: 9,152,099 km (0.105 R)
• M44: 9,395,793 km (0.119 R)
• M45: 9,507,244 km (0.081 R)
• M46: 9,686,612 km (0.096 R)
• M47: 9,799,259 km (0.114 R)
• M48: 10,071,377 km (0.076 R)
• M49: 10,415,004 km (0.087 R)
• M50: 10,484,268 km (0.053 R)
• M51: 11,374,076 km (0.084 R)
• M52: 12,045,321 km (0.078 R)
• M53: 12,680,065 km (0.105 R)
• M54: 13,602,037 km (0.109 R)
• M55: 14,109,473 km (0.102 R)
• M56: 14,186,067 km (0.105 R)
• M57: 14,339,853 km (0.111 R)
• M58: 14,571,431 km (0.116 R)
• M59: 14,700,684 km (0.093 R)
• M60: 15,169,074 km (0.085 R)
• M61: 15,352,481 km (0.11 R)
• M62: 15,483,978 km (0.091 R)
• M63: 15,801,125 km (0.066 R)
• M64: 15,987,076 km (0.058 R)
• M65: 16,173,774 km (0.079 R)
• M66: 16,254,108 km (0.078 R)
• M67: 16,414,926 km (0.106 R)
• M68: 16,549,414 km (0.105 R)
• M69: 17,336,748 km (0.098 R)
• M70: 17,638,487 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 318.2

Radius: 14.3

Gravity: 1.56 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 3.77 AU - 5.53 AU

Year: 4201 Days

Day: 14.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 47.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 81,058,208 km

• M1: 185,202 km (0.105 R)
• M2: 324,777 km (0.055 R)
• M3: 422,614 km (0.098 R)
• M4: 601,832 km (0.079 R)
• M5: 782,397 km (0.111 R)
• M6: 931,097 km (0.11 R)
• M7: 1,179,280 km (0.112 R)
• M8: 1,317,808 km (0.059 R)
• M9: 1,574,218 km (0.103 R)
• M10: 1,793,978 km (0.105 R)
• M11: 2,136,258 km (0.104 R)
• M12: 2,499,780 km (0.115 R)
• M13: 2,605,247 km (0.05 R)
• M14: 3,026,215 km (0.1 R)
• M15: 3,138,863 km (0.092 R)
• M16: 3,368,645 km (0.11 R)
• M17: 3,723,940 km (0.114 R)
• M18: 3,827,761 km (0.089 R)
• M19: 3,950,132 km (0.11 R)
• M20: 4,056,047 km (0.071 R)
• M21: 4,471,032 km (0.094 R)
• M22: 4,618,685 km (0.104 R)
• M23: 4,824,232 km (0.064 R)
• M24: 5,013,922 km (0.073 R)
• M25: 5,109,665 km (0.108 R)
• M26: 5,400,782 km (0.105 R)
• M27: 5,498,919 km (0.094 R)
• M28: 6,121,395 km (0.054 R)
• M29: 6,514,090 km (0.044 R)
• M30: 6,957,797 km (0.047 R)
• M31: 7,324,312 km (0.069 R)
• M32: 7,608,847 km (0.1 R)
• M33: 7,741,391 km (0.11 R)
• M34: 8,008,872 km (0.104 R)
• M35: 8,279,345 km (0.116 R)
• M36: 8,438,666 km (0.119 R)
• M37: 8,690,888 km (0.07 R)
• M38: 8,922,466 km (0.108 R)
• M39: 9,015,665 km (0.112 R)
• M40: 9,320,695 km (0.086 R)
• M41: 9,677,037 km (0.085 R)
• M42: 10,086,337 km (0.063 R)
• M43: 10,329,883 km (0.12 R)
• M44: 10,624,590 km (0.1 R)
• M45: 10,723,475 km (0.041 R)
• M46: 10,872,324 km (0.111 R)
• M47: 11,122,003 km (0.112 R)
• M48: 11,576,182 km (0.033 R)
• M49: 11,985,033 km (0.03 R)
• M50: 12,869,755 km (0.071 R)
• M51: 14,100,048 km (0.031 R)
• M52: 14,263,409 km (0.031 R)
• M53: 14,372,615 km (0.084 R)
• M54: 15,367,740 km (0.05 R)
• M55: 15,535,888 km (0.052 R)
• M56: 15,845,556 km (0.047 R)
• M57: 15,986,926 km (0.084 R)
• M58: 16,214,165 km (0.114 R)
• M59: 16,442,452 km (0.111 R)
• M60: 17,104,721 km (0.091 R)
• M61: 17,249,831 km (0.096 R)
• M62: 17,395,390 km (0.084 R)
• M63: 17,541,248 km (0.073 R)
• M64: 17,746,347 km (0.12 R)
• M65: 18,040,606 km (0.043 R)
• M66: 18,366,131 km (0.069 R)
• M67: 18,813,279 km (0.092 R)
• M68: 18,903,187 km (0.062 R)
• M69: 19,143,441 km (0.086 R)
• M70: 20,206,783 km (0.045 R)
• M71: 20,391,087 km (0.06 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 958.8

Radius: 9.3

Gravity: 11.09 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 4.79 AU - 6.39 AU

Year: 5537 Days

Day: 7.1 Hours

Environment

Temp: -171 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 81,058,208 km

• M1: 136,732 km (0.081 R)
• M2: 202,705 km (0.112 R)
• M3: 382,671 km (0.109 R)
• M4: 471,233 km (0.069 R)
• M5: 658,679 km (0.049 R)
• M6: 826,528 km (0.09 R)
• M7: 946,506 km (0.117 R)
• M8: 1,088,773 km (0.054 R)
• M9: 1,238,371 km (0.089 R)
• M10: 1,521,111 km (0.095 R)
• M11: 1,595,162 km (0.083 R)
• M12: 1,963,322 km (0.041 R)
• M13: 2,209,411 km (0.094 R)
• M14: 2,509,205 km (0.07 R)
• M15: 2,619,608 km (0.114 R)
• M16: 2,822,164 km (0.083 R)
• M17: 3,030,105 km (0.099 R)
• M18: 3,147,689 km (0.115 R)
• M19: 3,242,983 km (0.116 R)
• M20: 3,559,233 km (0.087 R)
• M21: 4,811,217 km (0.115 R)
• M22: 4,948,847 km (0.115 R)
• M23: 5,628,021 km (0.067 R)
• M24: 6,216,240 km (0.083 R)
• M25: 6,578,566 km (0.056 R)
• M26: 7,010,007 km (0.117 R)
• M27: 7,292,298 km (0.081 R)
• M28: 7,546,315 km (0.105 R)
• M29: 8,591,406 km (0.089 R)
• M30: 8,691,636 km (0.115 R)
• M31: 9,577,256 km (0.104 R)
• M32: 9,681,226 km (0.073 R)
• M33: 9,750,789 km (0.106 R)
• M34: 9,855,508 km (0.106 R)
• M35: 11,286,561 km (0.035 R)
• M36: 11,433,167 km (0.117 R)
• M37: 11,877,024 km (0.089 R)
• M38: 12,439,661 km (0.092 R)
• M39: 12,591,204 km (0.074 R)
• M40: 12,972,679 km (0.095 R)
• M41: 13,552,071 km (0.046 R)
• M42: 14,139,841 km (0.116 R)
• M43: 14,936,599 km (0.045 R)
• M44: 15,462,286 km (0.103 R)
• M45: 16,282,831 km (0.099 R)
• M46: 16,782,039 km (0.094 R)
• M47: 17,540,201 km (0.078 R)
• M48: 17,838,050 km (0.069 R)
• M49: 19,264,615 km (0.105 R)
• M50: 20,458,855 km (0.087 R)
• M51: 20,593,044 km (0.086 R)
• M52: 20,997,408 km (0.096 R)
• M53: 21,223,151 km (0.117 R)
• M54: 21,585,926 km (0.098 R)
• M55: 22,455,987 km (0.051 R)
• M56: 22,872,168 km (0.118 R)
• M57: 23,011,444 km (0.057 R)
• M58: 24,562,026 km (0.096 R)
• M59: 24,895,330 km (0.09 R)
• M60: 25,326,022 km (0.113 R)
• M61: 25,710,788 km (0.05 R)
• M62: 26,194,737 km (0.062 R)
• M63: 26,828,134 km (0.051 R)
• M64: 26,975,039 km (0.116 R)
• M65: 27,318,815 km (0.05 R)
• M66: 27,466,618 km (0.066 R)
• M67: 27,911,672 km (0.118 R)
• M68: 28,309,303 km (0.113 R)
• M69: 28,558,682 km (0.058 R)
• M70: 29,009,421 km (0.12 R)
• M71: 29,210,630 km (0.061 R)
• M72: 29,664,809 km (0.073 R)
• M73: 30,529,185 km (0.062 R)
• M74: 32,074,531 km (0.079 R)
• M75: 32,178,502 km (0.061 R)
• M76: 32,543,072 km (0.048 R)
• M77: 32,699,851 km (0.074 R)
• M78: 32,961,497 km (0.08 R)
• M79: 33,856,541 km (0.083 R)
• M80: 34,546,337 km (0.04 R)
• M81: 35,670,565 km (0.092 R)
• M82: 35,939,991 km (0.099 R)
• M83: 36,156,010 km (0.084 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 870.4

Radius: 13.5

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 5.28 AU - 6.6 AU

Year: 6065 Days

Day: 6.1 Hours

Environment

Temp: -166 °C

Axial Tilt: 6.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 81,058,208 km

• M1: 204,949 km (0.109 R)
• M2: 332,257 km (0.113 R)
• M3: 619,784 km (0.095 R)
• M4: 712,086 km (0.07 R)
• M5: 868,565 km (0.04 R)
• M6: 1,021,604 km (0.114 R)
• M7: 1,118,244 km (0.039 R)
• M8: 1,824,196 km (0.079 R)
• M9: 1,943,875 km (0.118 R)
• M10: 2,537,928 km (0.071 R)
• M11: 2,740,783 km (0.068 R)
• M12: 3,210,670 km (0.098 R)
• M13: 3,356,827 km (0.1 R)
• M14: 4,359,731 km (0.107 R)
• M15: 4,467,740 km (0.099 R)
• M16: 4,658,777 km (0.077 R)
• M17: 4,769,180 km (0.103 R)
• M18: 4,880,631 km (0.032 R)
• M19: 5,134,199 km (0.04 R)
• M20: 5,305,788 km (0.048 R)
• M21: 6,966,025 km (0.113 R)
• M22: 7,188,178 km (0.08 R)
• M23: 7,967,882 km (0.115 R)
• M24: 8,435,076 km (0.044 R)
• M25: 9,014,468 km (0.088 R)
• M26: 9,256,967 km (0.118 R)
• M27: 9,361,386 km (0.1 R)
• M28: 9,606,876 km (0.076 R)
• M29: 9,748,096 km (0.1 R)
• M30: 9,854,461 km (0.103 R)
• M31: 10,428,468 km (0.077 R)
• M32: 10,792,738 km (0.114 R)
• M33: 11,309,749 km (0.065 R)
• M34: 11,759,290 km (0.111 R)
• M35: 12,214,816 km (0.114 R)
• M36: 12,329,707 km (0.071 R)
• M37: 13,536,962 km (0.088 R)
• M38: 13,655,742 km (0.078 R)
• M39: 13,974,386 km (0.051 R)
• M40: 14,094,513 km (0.116 R)
• M41: 15,770,308 km (0.085 R)
• M42: 16,188,584 km (0.108 R)
• M43: 16,272,658 km (0.075 R)
• M44: 16,399,068 km (0.063 R)
• M45: 16,610,600 km (0.108 R)
• M46: 17,681,272 km (0.098 R)
• M47: 17,811,272 km (0.115 R)
• M48: 17,985,105 km (0.067 R)
• M49: 18,246,901 km (0.116 R)
• M50: 19,084,350 km (0.09 R)
• M51: 20,796,498 km (0.099 R)
• M52: 22,136,147 km (0.096 R)
• M53: 22,651,511 km (0.066 R)
• M54: 23,741,930 km (0.085 R)
• M55: 24,029,308 km (0.093 R)
• M56: 24,173,370 km (0.089 R)
• M57: 24,946,642 km (0.117 R)
• M58: 25,287,575 km (0.065 R)
• M59: 26,171,100 km (0.046 R)
• M60: 26,965,166 km (0.07 R)
• M61: 28,221,489 km (0.039 R)
• M62: 28,729,373 km (0.092 R)
• M63: 28,831,399 km (0.092 R)
• M64: 28,984,438 km (0.116 R)
• M65: 29,137,925 km (0.115 R)
• M66: 29,496,960 km (0.078 R)
• M67: 29,805,880 km (0.118 R)
• M68: 30,374,950 km (0.094 R)
• M69: 30,686,862 km (0.112 R)
• M70: 31,104,539 km (0.054 R)
• M71: 31,366,485 km (0.105 R)
• M72: 31,734,346 km (0.112 R)
• M73: 32,209,618 km (0.092 R)
• M74: 32,315,534 km (0.097 R)
• M75: 34,620,837 km (0.053 R)
• M76: 36,701,893 km (0.077 R)
• M77: 36,923,298 km (0.059 R)
• M78: 37,145,151 km (0.1 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 457.3

Radius: 7.6

Gravity: 7.92 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 12.5 AU - 19.58 AU

Year: 26915 Days

Day: 20.1 Hours

Environment

Temp: -214 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 81,058,208 km

• M1: 123,119 km (0.056 R)
• M2: 187,895 km (0.058 R)
• M3: 433,983 km (0.088 R)
• M4: 647,609 km (0.043 R)
• M5: 1,167,462 km (0.098 R)
• M6: 2,390,724 km (0.078 R)
• M7: 2,693,360 km (0.093 R)
• M8: 3,129,288 km (0.093 R)
• M9: 3,210,819 km (0.12 R)
• M10: 3,629,843 km (0.068 R)
• M11: 4,335,645 km (0.112 R)
• M12: 4,751,079 km (0.118 R)
• M13: 4,939,871 km (0.094 R)
• M14: 5,520,909 km (0.044 R)
• M15: 5,619,943 km (0.097 R)
• M16: 6,852,929 km (0.047 R)
• M17: 7,173,816 km (0.11 R)
• M18: 7,390,434 km (0.1 R)
• M19: 7,499,640 km (0.107 R)
• M20: 7,664,497 km (0.096 R)
• M21: 8,165,949 km (0.03 R)
• M22: 8,620,577 km (0.104 R)
• M23: 9,083,433 km (0.078 R)
• M24: 9,141,926 km (0.03 R)
• M25: 9,495,126 km (0.102 R)
• M26: 10,214,991 km (0.091 R)
• M27: 11,516,642 km (0.025 R)
• M28: 12,154,528 km (0.12 R)
• M29: 12,283,631 km (0.058 R)
• M30: 12,413,033 km (0.062 R)
• M31: 12,542,884 km (0.064 R)
• M32: 13,133,047 km (0.05 R)
• M33: 13,665,167 km (0.088 R)
• M34: 13,933,845 km (0.096 R)
• M35: 14,136,550 km (0.074 R)
• M36: 14,340,302 km (0.052 R)
• M37: 14,408,369 km (0.109 R)
• M38: 15,793,047 km (0.086 R)
• M39: 16,501,094 km (0.04 R)
• M40: 17,219,613 km (0.097 R)
• M41: 18,021,756 km (0.071 R)
• M42: 18,985,316 km (0.11 R)
• M43: 20,041,627 km (0.109 R)
• M44: 20,884,910 km (0.111 R)
• M45: 21,116,936 km (0.093 R)
• M46: 21,583,532 km (0.093 R)
• M47: 22,685,320 km (0.048 R)
• M48: 25,107,459 km (0.091 R)
• M49: 25,354,146 km (0.068 R)
• M50: 26,935,246 km (0.075 R)
• M51: 28,633,631 km (0.103 R)
• M52: 28,977,556 km (0.076 R)
• M53: 29,149,893 km (0.094 R)
• M54: 30,279,058 km (0.09 R)
• M55: 30,717,230 km (0.113 R)
• M56: 30,893,007 km (0.104 R)
• M57: 32,849,000 km (0.076 R)
• M58: 33,751,374 km (0.104 R)
• M59: 34,387,763 km (0.108 R)
• M60: 35,580,208 km (0.118 R)
• M61: 36,599,867 km (0.117 R)
• M62: 37,159,961 km (0.108 R)
• M63: 37,347,408 km (0.078 R)
• M64: 37,723,048 km (0.104 R)
• M65: 38,194,431 km (0.071 R)
• M66: 39,047,737 km (0.11 R)
• M67: 40,099,111 km (0.099 R)
• M68: 40,773,049 km (0.051 R)
• M69: 41,645,055 km (0.113 R)
• M70: 42,915,590 km (0.115 R)
• M71: 44,695,505 km (0.079 R)
• M72: 47,715,288 km (0.118 R)
• M73: 51,112,207 km (0.067 R)
• M74: 53,314,288 km (0.045 R)
• M75: 53,419,904 km (0.112 R)
• M76: 54,161,311 km (0.089 R)
• M77: 55,547,036 km (0.026 R)
• M78: 56,083,195 km (0.037 R)
• M79: 58,353,641 km (0.106 R)
• M80: 58,571,456 km (0.101 R)
• M81: 59,445,257 km (0.094 R)
• M82: 63,878,889 km (0.107 R)
• M83: 64,215,634 km (0.114 R)
• M84: 65,568,597 km (0.118 R)
• M85: 65,795,088 km (0.112 R)
• M86: 66,931,135 km (0.06 R)
• M87: 67,159,122 km (0.05 R)
• M88: 68,188,205 km (0.099 R)
• M89: 74,707,681 km (0.092 R)
• M90: 75,417,822 km (0.052 R)
• M91: 78,641,506 km (0.11 R)
• M92: 79,846,816 km (0.085 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: 339 - 10,604 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit