IOTA/IOTA-ES occultation update for (16159) 2000 AK62 / UCAC4 319-198246 event on 2024 Oct 07, 13:22 UT Visible from Summary ------- On 2024 Oct 07 UT, the 15.2980766146906 km diameter asteroid (16159) 2000 AK62 will occult a 10.8 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.44 mag to 19.22 mag (the magnitude of the asteroid) for at most 0.830 seconds. This update is based on, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 99 * date and approx. time of event: 2024 Oct 07, 13:17 - 2024 Oct 07, 13:27 * geocentric midpoint of event [JD]: 2460591.05751766 * magnitude of target star: 10.78 * magnitude drop [mag]: 8.44 * estimated maximum duration [s]: 0.830 * Moon: 20 % sunlit, 32° distance * Sun: 85° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 18 * 1 sigma uncertainty interval [path widths]: +/- 0.26 * 1 sigma uncertainty interval [seconds]: +/- 2.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.001", 75°) * approx speed of asteroid's shadow [km/s]: 18.7919 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 319-198246 by 16159 2000 AK62 on 2024 Oct 7 Centre Star Star Sun Path Limits Error Limits Alt E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude - 49 0 0 -40 42 25 13 17 49.1 1 125 48 -40 48 14 -40 36 35 -40 51 20 -40 33 30 .... - 48 0 0 -41 14 22 13 17 49.3 2 124 48 -41 20 11 -41 8 33 -41 23 16 -41 5 28 0.51 - 47 0 0 -41 45 51 13 17 49.5 3 123 48 -41 51 40 -41 40 3 -41 54 44 -41 36 59 0.52 - 46 0 0 -42 16 53 13 17 49.8 4 123 48 -42 22 41 -42 11 6 -42 25 45 -42 8 2 0.52 - 45 0 0 -42 47 27 13 17 50.3 4 122 48 -42 53 13 -42 41 40 -42 56 17 -42 38 37 0.52 - 44 0 0 -43 17 32 13 17 50.8 5 121 48 -43 23 17 -43 11 46 -43 26 20 -43 8 44 0.53 - 43 0 0 -43 47 7 13 17 51.4 6 121 48 -43 52 52 -43 41 23 -43 55 55 -43 38 21 0.53 - 42 0 0 -44 16 13 13 17 52.1 7 120 48 -44 21 57 -44 10 30 -44 24 59 -44 7 28 0.53 - 41 0 0 -44 44 50 13 17 52.8 8 119 48 -44 50 32 -44 39 7 -44 53 34 -44 36 6 0.53 - 40 0 0 -45 12 56 13 17 53.7 9 118 48 -45 18 38 -45 7 15 -45 21 39 -45 4 14 0.53 - 39 0 0 -45 40 32 13 17 54.6 10 118 48 -45 46 13 -45 34 52 -45 49 13 -45 31 52 0.53 - 38 0 0 -46 7 37 13 17 55.6 10 117 48 -46 13 17 -46 1 58 -46 16 17 -45 58 59 0.53 - 37 0 0 -46 34 12 13 17 56.6 11 116 47 -46 39 51 -46 28 34 -46 42 50 -46 25 36 0.53 - 36 0 0 -47 0 16 13 17 57.7 12 116 47 -47 5 54 -46 54 40 -47 8 52 -46 51 41 0.53 - 35 0 0 -47 25 50 13 17 58.9 13 115 47 -47 31 26 -47 20 14 -47 34 24 -47 17 17 0.53 - 34 0 0 -47 50 52 13 18 0.1 14 114 47 -47 56 27 -47 45 18 -47 59 25 -47 42 21 0.53 - 33 0 0 -48 15 24 13 18 1.4 14 113 47 -48 20 58 -48 9 51 -48 23 54 -48 6 55 0.53 - 32 0 0 -48 39 25 13 18 2.8 15 112 46 -48 44 57 -48 33 53 -48 47 54 -48 30 57 0.53 - 31 0 0 -49 2 55 13 18 4.1 16 112 46 -49 8 26 -48 57 25 -49 11 22 -48 54 30 0.53 - 30 0 0 -49 25 55 13 18 5.6 17 111 46 -49 31 25 -49 20 26 -49 34 20 -49 17 31 0.53 - 29 0 0 -49 48 24 13 18 7.1 17 110 46 -49 53 53 -49 42 56 -49 56 47 -49 40 2 0.53 - 28 0 0 -50 10 23 13 18 8.6 18 109 45 -50 15 50 -50 4 56 -50 18 44 -50 2 3 0.53 - 27 0 0 -50 31 51 13 18 10.2 19 108 45 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16 47 -54 6 25 -54 19 32 -54 3 41 0.53 - 14 0 0 -54 26 53 13 18 33.7 28 97 41 -54 32 3 -54 21 43 -54 34 47 -54 18 59 0.53 - 13 0 0 -54 41 43 13 18 35.7 28 96 41 -54 46 52 -54 36 35 -54 49 35 -54 33 51 0.53 - 12 0 0 -54 56 7 13 18 37.7 29 95 40 -55 1 14 -54 51 0 -55 3 57 -54 48 17 0.53 - 11 0 0 -55 10 5 13 18 39.8 29 94 40 -55 15 11 -55 4 58 -55 17 53 -55 2 16 0.53 - 10 0 0 -55 23 36 13 18 41.8 30 94 39 -55 28 42 -55 18 31 -55 31 24 -55 15 50 0.53 - 9 0 0 -55 36 43 13 18 43.9 31 93 39 -55 41 47 -55 31 39 -55 44 28 -55 28 58 0.53 - 8 0 0 -55 49 24 13 18 46.0 31 92 39 -55 54 27 -55 44 21 -55 57 8 -55 41 41 0.53 - 7 0 0 -56 1 41 13 18 48.1 32 91 38 -56 6 43 -55 56 39 -56 9 23 -55 53 59 0.53 - 6 0 0 -56 13 32 13 18 50.2 32 90 38 -56 18 33 -56 8 31 -56 21 13 -56 5 52 0.53 - 5 0 0 -56 25 0 13 18 52.4 33 89 38 -56 30 0 -56 20 0 -56 32 39 -56 17 21 0.53 - 4 0 0 -56 36 3 13 18 54.5 33 88 37 -56 41 2 -56 31 4 -56 43 41 -56 28 26 0.53 - 3 0 0 -56 46 43 13 18 56.7 34 87 37 -56 51 41 -56 41 45 -56 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43 -14 17 33 -14 31 40 -14 14 36 0.57 146 0 0 -13 48 7 13 27 43.0 11 246 -68 -13 53 40 -13 42 34 -13 56 37 -13 39 37 0.58 147 0 0 -13 13 31 13 27 44.5 10 245 -69 -13 19 4 -13 8 0 -13 22 0 -13 5 4 0.58 148 0 0 -12 39 22 13 27 45.8 9 245 -70 -12 44 53 -12 33 52 -12 47 49 -12 30 57 0.59 149 0 0 -12 5 41 13 27 46.9 8 245 -71 -12 11 10 -12 0 11 -12 14 5 -11 57 17 0.59 150 0 0 -11 32 27 13 27 47.9 7 245 -72 -11 37 55 -11 26 59 -11 40 49 -11 24 5 0.60 151 0 0 -10 59 42 13 27 48.7 6 244 -73 -11 5 9 -10 54 15 -11 8 2 -10 51 22 0.62 152 0 0 -10 27 27 13 27 49.4 5 244 -74 -10 32 52 -10 22 1 -10 35 45 -10 19 9 0.64 153 0 0 - 9 55 41 13 27 49.9 4 244 -74 -10 1 6 - 9 50 17 -10 3 58 - 9 47 26 0.67 154 0 0 - 9 24 27 13 27 50.3 2 244 -75 - 9 29 50 - 9 19 4 - 9 32 42 - 9 16 13 0.73 155 0 0 - 8 53 44 13 27 50.5 1 244 -75 - 8 59 6 - 8 48 23 - 9 1 57 - 8 45 33 0.89 156 0 0 - 8 23 34 13 27 50.6 0 244 -76 - 8 28 54 - 8 18 13 - 8 31 44 - 8 15 24 2.90 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 319-198246 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 41 23.5998 DE: -26 13 40.341 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 41 23.5998 DE: -26 13 40.341 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.8 * B mag [mag]: 11.7 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (16159) 2000 AK62 asteroid class: approx. diameter [km]: 15 approx. diameter ["]: 0.006 distance from Earth [AU]: 3.25290 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#48 date of fit: 2023 Apr 25 source of used astrometry: MPC, JPL number of used observations: 0 number of rejected observations: 0 time covered by the observations: 1800 Jan 01 - 1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.017", 0.001", 75.223° remarks: * orbital elements for (16159)2000 AK62 : Mean anomaly = 145.1632002475 deg Arg. of pericenter = 195.8536647903 deg Long. of node = 311.3308997206 deg Inclination = 12.0193604276 deg Eccentricity = 0.0673701244 Semimajor axis = 3.1385529143 AU Perihelion dist = 2.9271082139 AU Mag: H = 13.14, G = 0.15 Epoch of elements : MJD 60590.55751729 TDT (2024 Oct 07.5575) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#482023Apr25,0.83,2024,10,7,13.380424,0.144678,-0.438421,10.070568,3.329485,0.005847,0.000407,0.000000,0.000000 63.3421,-26.2056,-23.79,-5.82,False UCAC4 319-198246,18.68988887,-26.2278724,11.69,10.78,10.29,0.1,0,,18.71540829,-26.2056460,8.44,8.48,0,0,0 16159,2000 AK62,19.22,15.534,3.2529,0,0,2.023,9.00,,1.4,0 0,145.0644,2024,10,7,195.8537,311.3309,12.0194,0.06737,3.13855,2.92711,13.14,5.0,0.15 1.265,0.0173,0.0014,75,0.0017,Known errors,0.75,0,-1,-1 20241007_198246,60140.62 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:48 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org