IOTA/IOTA-ES occultation update for (1650) Heckmann / UCAC4 422-135982 event on 2024 Aug 11, 03:59 UT Visible from Summary ------- On 2024 Aug 11 UT, the 30.24 km diameter asteroid (1650) Heckmann will occult a 11.4 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.09 mag to 14.46 mag (the magnitude of the asteroid) for at most 3.590 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: 100 * date and approx. time of event: 2024 Aug 11, 03:46 - 2024 Aug 11, 04:12 * geocentric midpoint of event [JD]: 2460533.66646500 * magnitude of target star: 11.44 * magnitude drop [mag]: 3.09 * estimated maximum duration [s]: 3.590 * Moon: 36 % sunlit, 124° distance * Sun: 162° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 30 * 1 sigma uncertainty interval [path widths]: +/- 0.08 * 1 sigma uncertainty interval [seconds]: +/- 2.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.024, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.026", 0.002", 70°) * approx speed of asteroid's shadow [km/s]: 8.4295 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 422-135982 by 1650 Heckmann on 2024 Aug 11 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 -139 0 0 -27 13 27 4 12 16.8 0 96 -18 -27 5 12 -27 21 42 -27 3 57 -27 22 57 .... -138 0 0 -27 19 3 4 12 16.6 1 96 -19 -27 10 48 -27 27 17 -27 9 33 -27 28 32 0.06 -137 0 0 -27 24 15 4 12 16.3 2 95 -20 -27 16 1 -27 32 29 -27 14 46 -27 33 44 0.06 -136 0 0 -27 29 4 4 12 15.7 3 95 -21 -27 20 50 -27 37 18 -27 19 35 -27 38 34 0.06 -135 0 0 -27 33 31 4 12 15.0 4 94 -22 -27 25 17 -27 41 44 -27 24 2 -27 43 0 0.06 -134 0 0 -27 37 34 4 12 14.0 5 94 -22 -27 29 21 -27 45 48 -27 28 6 -27 47 3 0.06 -133 0 0 -27 41 14 4 12 13.0 6 93 -23 -27 33 1 -27 49 28 -27 31 46 -27 50 43 0.06 -132 0 0 -27 44 32 4 12 11.7 7 93 -24 -27 36 19 -27 52 45 -27 35 4 -27 54 0 0.06 -131 0 0 -27 47 27 4 12 10.2 8 92 -25 -27 39 14 -27 55 39 -27 37 59 -27 56 54 0.06 -130 0 0 -27 49 59 4 12 8.6 8 92 -26 -27 41 46 -27 58 11 -27 40 31 -27 59 26 0.06 -129 0 0 -27 52 8 4 12 6.8 9 92 -27 -27 43 55 -28 0 20 -27 42 40 -28 1 35 0.06 -128 0 0 -27 53 54 4 12 4.8 10 91 -28 -27 45 42 -28 2 7 -27 44 27 -28 3 21 0.06 -127 0 0 -27 55 18 4 12 2.7 11 91 -29 -27 47 6 -28 3 30 -27 45 51 -28 4 45 0.06 -126 0 0 -27 56 19 4 12 0.4 12 90 -29 -27 48 7 -28 4 32 -27 46 52 -28 5 47 0.06 -125 0 0 -27 56 58 4 11 57.9 13 90 -30 -27 48 46 -28 5 11 -27 47 31 -28 6 25 0.06 -124 0 0 -27 57 15 4 11 55.2 14 89 -31 -27 49 2 -28 5 27 -27 47 48 -28 6 42 0.06 -123 0 0 -27 57 9 4 11 52.4 15 89 -32 -27 48 56 -28 5 21 -27 47 42 -28 6 36 0.06 -122 0 0 -27 56 40 4 11 49.4 15 88 -33 -27 48 28 -28 4 52 -27 47 13 -28 6 7 0.06 -121 0 0 -27 55 49 4 11 46.3 16 88 -34 -27 47 37 -28 4 2 -27 46 22 -28 5 17 0.06 -120 0 0 -27 54 36 4 11 42.9 17 87 -35 -27 46 24 -28 2 49 -27 45 9 -28 4 4 0.06 -119 0 0 -27 53 1 4 11 39.4 18 87 -36 -27 44 49 -28 1 14 -27 43 34 -28 2 29 0.06 -118 0 0 -27 51 4 4 11 35.8 19 86 -36 -27 42 51 -27 59 16 -27 41 36 -28 0 31 0.06 -117 0 0 -27 48 44 4 11 32.0 20 86 -37 -27 40 31 -27 56 57 -27 39 16 -27 58 12 0.06 -116 0 0 -27 46 3 4 11 28.0 21 86 -38 -27 37 50 -27 54 16 -27 36 35 -27 55 31 0.06 -115 0 0 -27 42 59 4 11 23.8 22 85 -39 -27 34 46 -27 51 12 -27 33 31 -27 52 27 0.06 -114 0 0 -27 39 33 4 11 19.5 22 85 -40 -27 31 20 -27 47 47 -27 30 5 -27 49 2 0.06 -113 0 0 -27 35 45 4 11 15.0 23 84 -41 -27 27 32 -27 43 59 -27 26 17 -27 45 14 0.06 -112 0 0 -27 31 36 4 11 10.4 24 84 -42 -27 23 22 -27 39 50 -27 22 7 -27 41 5 0.06 -111 0 0 -27 27 4 4 11 5.6 25 83 -43 -27 18 50 -27 35 19 -27 17 35 -27 36 34 0.06 -110 0 0 -27 22 11 4 11 0.6 26 83 -43 -27 13 56 -27 30 26 -27 12 41 -27 31 41 0.06 -109 0 0 -27 16 56 4 10 55.5 27 82 -44 -27 8 41 -27 25 11 -27 7 26 -27 26 26 0.06 -108 0 0 -27 11 19 4 10 50.2 28 82 -45 -27 3 4 -27 19 34 -27 1 48 -27 20 50 0.06 -107 0 0 -27 5 20 4 10 44.7 29 81 -46 -26 57 5 -27 13 36 -26 55 49 -27 14 51 0.06 -106 0 0 -26 59 0 4 10 39.1 29 81 -47 -26 50 44 -27 7 16 -26 49 29 -27 8 32 0.07 -105 0 0 -26 52 18 4 10 33.3 30 80 -48 -26 44 2 -27 0 35 -26 42 46 -27 1 50 0.07 -104 0 0 -26 45 15 4 10 27.4 31 80 -49 -26 36 58 -26 53 31 -26 35 42 -26 54 47 0.07 -103 0 0 -26 37 49 4 10 21.3 32 80 -50 -26 29 32 -26 46 7 -26 28 17 -26 47 22 0.07 -102 0 0 -26 30 3 4 10 15.0 33 79 -50 -26 21 45 -26 38 21 -26 20 29 -26 39 36 0.07 -101 0 0 -26 21 55 4 10 8.6 34 79 -51 -26 13 37 -26 30 13 -26 12 21 -26 31 29 0.07 -100 0 0 -26 13 25 4 10 2.0 35 78 -52 -26 5 7 -26 21 44 -26 3 51 -26 23 0 0.07 - 99 0 0 -26 4 35 4 9 55.3 36 78 -53 -25 56 15 -26 12 54 -25 55 0 -26 14 10 0.07 - 98 0 0 -25 55 23 4 9 48.4 36 77 -54 -25 47 3 -26 3 43 -25 45 47 -26 4 59 0.07 - 97 0 0 -25 45 49 4 9 41.3 37 77 -55 -25 37 29 -25 54 10 -25 36 13 -25 55 26 0.07 - 96 0 0 -25 35 55 4 9 34.1 38 76 -56 -25 27 34 -25 44 16 -25 26 18 -25 45 32 0.07 - 95 0 0 -25 25 39 4 9 26.7 39 76 -57 -25 17 18 -25 34 1 -25 16 2 -25 35 17 0.07 - 94 0 0 -25 15 3 4 9 19.2 40 75 -58 -25 6 41 -25 23 25 -25 5 24 -25 24 41 0.07 - 93 0 0 -25 4 5 4 9 11.5 41 75 -58 -24 55 42 -25 12 28 -24 54 26 -25 13 45 0.07 - 92 0 0 -24 52 47 4 9 3.7 42 75 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- 4 11 33 - 4 32 8 0.06 - 30 0 0 - 3 56 12 3 57 0.6 77 262 -60 - 3 47 17 - 4 5 8 - 3 45 55 - 4 6 30 0.06 - 29 0 0 - 3 30 33 3 56 47.3 76 260 -59 - 3 21 37 - 3 39 29 - 3 20 16 - 3 40 50 0.06 - 28 0 0 - 3 4 53 3 56 34.0 75 259 -58 - 2 55 57 - 3 13 49 - 2 54 36 - 3 15 11 0.06 - 27 0 0 - 2 39 13 3 56 20.8 74 258 -57 - 2 30 18 - 2 48 9 - 2 28 56 - 2 49 31 0.06 - 26 0 0 - 2 13 34 3 56 7.7 73 258 -56 - 2 4 38 - 2 22 30 - 2 3 17 - 2 23 51 0.06 - 25 0 0 - 1 47 56 3 55 54.6 72 257 -55 - 1 39 0 - 1 56 52 - 1 37 39 - 1 58 13 0.06 - 24 0 0 - 1 22 20 3 55 41.6 71 256 -54 - 1 13 24 - 1 31 15 - 1 12 3 - 1 32 36 0.06 - 23 0 0 - 0 56 45 3 55 28.6 70 256 -53 - 0 47 50 - 1 5 41 - 0 46 29 - 1 7 2 0.06 - 22 0 0 - 0 31 14 3 55 15.8 69 255 -52 - 0 22 19 - 0 40 9 - 0 20 58 - 0 41 31 0.06 - 21 0 0 - 0 5 46 3 55 3.0 68 255 -51 0 3 9 - 0 14 41 0 4 30 - 0 16 2 0.06 - 20 0 0 0 19 38 3 54 50.4 67 255 -50 0 28 33 0 10 43 0 29 54 0 9 22 0.06 - 19 0 0 0 44 58 3 54 37.8 66 254 -49 0 53 52 0 36 3 0 55 13 0 34 42 0.06 - 18 0 0 1 10 12 3 54 25.3 65 254 -48 1 19 7 1 1 18 1 20 28 0 59 57 0.05 - 17 0 0 1 35 22 3 54 13.0 64 254 -47 1 44 15 1 26 28 1 45 36 1 25 6 0.05 - 16 0 0 2 0 25 3 54 0.7 63 253 -46 2 9 18 1 51 31 2 10 39 1 50 10 0.05 - 15 0 0 2 25 21 3 53 48.6 62 253 -45 2 34 14 2 16 28 2 35 35 2 15 7 0.05 - 14 0 0 2 50 10 3 53 36.6 61 253 -44 2 59 3 2 41 18 3 0 24 2 39 57 0.05 - 13 0 0 3 14 52 3 53 24.7 60 253 -43 3 23 45 3 6 0 3 25 5 3 4 39 0.05 - 12 0 0 3 39 26 3 53 13.0 59 253 -42 3 48 18 3 30 34 3 49 39 3 29 13 0.05 - 11 0 0 4 3 51 3 53 1.3 58 253 -41 4 12 42 3 54 59 4 14 3 3 53 38 0.05 - 10 0 0 4 28 6 3 52 49.9 57 253 -40 4 36 57 4 19 15 4 38 18 4 17 54 0.05 - 9 0 0 4 52 12 3 52 38.5 56 253 -39 5 1 3 4 43 22 5 2 24 4 42 1 0.05 - 8 0 0 5 16 8 3 52 27.4 55 252 -38 5 24 58 5 7 18 5 26 19 5 5 57 0.05 - 7 0 0 5 39 53 3 52 16.3 54 252 -37 5 48 43 5 31 4 5 50 4 5 29 43 0.05 - 6 0 0 6 3 28 3 52 5.5 53 252 -35 6 12 17 5 54 38 6 13 37 5 53 18 0.05 - 5 0 0 6 26 50 3 51 54.8 52 252 -34 6 35 39 6 18 2 6 36 59 6 16 41 0.05 - 4 0 0 6 50 1 3 51 44.2 51 252 -33 6 58 49 6 41 13 7 0 9 6 39 52 0.05 - 3 0 0 7 12 59 3 51 33.8 50 252 -32 7 21 46 7 4 11 7 23 6 7 2 51 0.05 - 2 0 0 7 35 44 3 51 23.6 49 253 -31 7 44 31 7 26 57 7 45 51 7 25 37 0.05 - 1 0 0 7 58 16 3 51 13.6 48 253 -30 8 7 2 7 49 30 8 8 22 7 48 10 0.05 0 0 0 8 20 34 3 51 3.7 47 253 -29 8 29 19 8 11 48 8 30 39 8 10 28 0.05 1 0 0 8 42 38 3 50 54.1 45 253 -28 8 51 23 8 33 53 8 52 42 8 32 33 0.05 2 0 0 9 4 27 3 50 44.6 44 253 -27 9 13 11 8 55 43 9 14 31 8 54 23 0.05 3 0 0 9 26 1 3 50 35.3 43 253 -26 9 34 45 9 17 18 9 36 4 9 15 58 0.05 4 0 0 9 47 20 3 50 26.1 42 253 -25 9 56 3 9 38 37 9 57 23 9 37 18 0.05 5 0 0 10 8 24 3 50 17.2 41 253 -24 10 17 6 9 59 41 10 18 25 9 58 22 0.05 6 0 0 10 29 11 3 50 8.5 40 253 -23 10 37 52 10 20 29 10 39 12 10 19 10 0.05 7 0 0 10 49 41 3 49 59.9 39 253 -22 10 58 22 10 41 0 10 59 41 10 39 41 0.05 8 0 0 11 9 55 3 49 51.6 38 253 -21 11 18 36 11 1 15 11 19 55 10 59 56 0.05 9 0 0 11 29 52 3 49 43.4 37 254 -20 11 38 32 11 21 13 11 39 51 11 19 54 0.05 10 0 0 11 49 32 3 49 35.4 36 254 -19 11 58 10 11 40 53 11 59 29 11 39 34 0.05 11 0 0 12 8 53 3 49 27.7 35 254 -18 12 17 31 12 0 15 12 18 50 11 58 56 0.05 12 0 0 12 27 57 3 49 20.1 34 254 -17 12 36 34 12 19 20 12 37 53 12 18 1 0.05 13 0 0 12 46 42 3 49 12.8 33 254 -16 12 55 19 12 38 6 12 56 37 12 36 47 0.05 14 0 0 13 5 9 3 49 5.6 32 255 -15 13 13 45 12 56 33 13 15 3 12 55 15 0.05 15 0 0 13 23 17 3 48 58.7 31 255 -14 13 31 52 13 14 42 13 33 10 13 13 23 0.05 16 0 0 13 41 5 3 48 51.9 30 255 -13 13 49 40 13 32 31 13 50 58 13 31 13 0.05 17 0 0 13 58 35 3 48 45.4 29 255 -12 14 7 8 13 50 1 14 8 26 13 48 43 0.05 18 0 0 14 15 44 3 48 39.1 28 255 -11 14 24 17 14 7 11 14 25 35 14 5 53 0.05 19 0 0 14 32 34 3 48 33.0 28 256 -10 14 41 6 14 24 2 14 42 24 14 22 44 0.05 20 0 0 14 49 3 3 48 27.1 27 256 -9 14 57 35 14 40 32 14 58 52 14 39 14 0.05 21 0 0 15 5 13 3 48 21.4 26 256 -8 15 13 43 14 56 42 15 15 1 14 55 24 0.05 22 0 0 15 21 1 3 48 15.9 25 256 -7 15 29 31 15 12 31 15 30 49 15 11 14 0.05 23 0 0 15 36 29 3 48 10.6 24 257 -6 15 44 58 15 28 0 15 46 16 15 26 43 0.05 24 0 0 15 51 36 3 48 5.6 23 257 -5 16 0 5 15 43 8 16 1 22 15 41 50 0.05 25 0 0 16 6 22 3 48 0.7 22 257 -4 16 14 50 15 57 54 16 16 7 15 56 37 0.06 26 0 0 16 20 47 3 47 56.1 21 257 -4 16 29 14 16 12 20 16 30 31 16 11 2 0.06 27 0 0 16 34 50 3 47 51.7 20 258 -3 16 43 16 16 26 23 16 44 33 16 25 6 0.06 28 0 0 16 48 31 3 47 47.4 19 258 -2 16 56 57 16 40 5 16 58 14 16 38 49 0.06 29 0 0 17 1 51 3 47 43.4 18 258 -1 17 10 16 16 53 26 17 11 33 16 52 9 0.06 30 0 0 17 14 49 3 47 39.7 17 258 0 17 23 13 17 6 24 17 24 30 17 5 7 0.06 31 0 0 17 27 24 3 47 36.1 16 259 1 17 35 48 17 19 0 17 37 4 17 17 44 0.06 32 0 0 17 39 38 3 47 32.7 15 259 2 17 48 1 17 31 14 17 49 17 17 29 58 0.06 33 0 0 17 51 29 3 47 29.5 14 259 3 17 59 51 17 43 6 18 1 7 17 41 50 0.06 34 0 0 18 2 57 3 47 26.6 13 260 4 18 11 19 17 54 35 18 12 35 17 53 19 0.06 35 0 0 18 14 3 3 47 23.9 12 260 5 18 22 24 18 5 42 18 23 40 18 4 25 0.06 36 0 0 18 24 46 3 47 21.3 11 260 6 18 33 7 18 16 25 18 34 23 18 15 9 0.06 37 0 0 18 35 6 3 47 19.0 10 260 7 18 43 26 18 26 46 18 44 42 18 25 30 0.06 38 0 0 18 45 4 3 47 16.9 9 261 8 18 53 23 18 36 44 18 54 39 18 35 28 0.06 39 0 0 18 54 38 3 47 15.0 8 261 9 19 2 57 18 46 19 19 4 13 18 45 3 0.06 40 0 0 19 3 49 3 47 13.3 7 261 10 19 12 7 18 55 30 19 13 23 18 54 15 0.07 41 0 0 19 12 37 3 47 11.9 6 262 11 19 20 55 19 4 19 19 22 11 19 3 3 0.07 42 0 0 19 21 1 3 47 10.6 5 262 12 19 29 19 19 12 44 19 30 34 19 11 28 0.07 43 0 0 19 29 2 3 47 9.5 4 262 13 19 37 19 19 20 45 19 38 35 19 19 30 0.07 44 0 0 19 36 40 3 47 8.7 3 263 14 19 44 56 19 28 23 19 46 12 19 27 8 0.08 45 0 0 19 43 54 3 47 8.0 2 263 15 19 52 10 19 35 38 19 53 25 19 34 22 0.08 46 0 0 19 50 44 3 47 7.6 2 263 16 19 59 0 19 42 28 20 0 15 19 41 13 0.10 47 0 0 19 57 10 3 47 7.4 1 264 17 20 5 26 19 48 55 20 6 41 19 47 40 0.17 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.2 Data for the target star ------------------------ * name: UCAC4 422-135982 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 22 25 00.8016 DE: -05 47 42.367 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 22 25 00.8017 DE: -05 47 42.365 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.4 * B mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1650) Heckmann asteroid class: approx. diameter [km]: 30 approx. diameter ["]: 0.033 distance from Earth [AU]: 1.26950 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 date of fit: 2023 Apr 24 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): 0.026", 0.002", 70.007° remarks: * orbital elements for (1650)Heckmann : Mean anomaly = 54.8671972839 deg Arg. of pericenter = 56.6463780813 deg Long. of node = 199.6872260155 deg Inclination = 2.7509143500 deg Eccentricity = 0.1626868572 Semimajor axis = 2.4350512650 AU Perihelion dist = 2.0389004277 AU Mag: H = 11.62, G = 0.15 Epoch of elements : MJD 60533.16646529 TDT (2024 Aug 11.1665) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr24,3.59,2024,8,11,3.995160,0.024595,-0.057395,-4.360639,-1.903115,-0.001323,-0.000885,0.000001,0.000000 -43.4640,-5.6689,121.38,15.13,False UCAC4 422-135982,22.41688932,-5.7951019,12.04,11.44,11.12,0.0,0,,22.43860035,-5.6688623,3.09,2.97,0,0,0 1650,Heckmann,14.46,30.240,1.2695,0,0,-2.024,-13.19,,2.0,0 0,54.8240,2024,8,11,56.6464,199.6872,2.7509,0.16269,2.43505,2.03890,11.62,5.0,0.15 1.076,0.0260,0.0019,70,0.0025,Known errors,0.99,0,-1,-1 20240811_135982,60140.24 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 05:45 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org