IOTA/IOTA-ES occultation update for (801) Helwerthia / UCAC4 498-055101 event on 2024 Jun 14, 16:42 UT Visible from Summary ------- On 2024 Jun 14 UT, the 33.835 km diameter asteroid (801) Helwerthia will occult a 11.7 mag star in the constellation Leo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.12 mag to 16.78 mag (the magnitude of the asteroid) for at most 0.990 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 Jun 14, 16:39 - 2024 Jun 14, 16:45 * geocentric midpoint of event [JD]: 2460476.19600796 * magnitude of target star: 11.67 * magnitude drop [mag]: 5.12 * estimated maximum duration [s]: 0.990 * Moon: 55 % sunlit, 38° distance * Sun: 58° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 34 * 1 sigma uncertainty interval [path widths]: +/- 0.13 * 1 sigma uncertainty interval [seconds]: +/- 0.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.010", 0.002", 96°) * approx speed of asteroid's shadow [km/s]: 34.0570 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 498-055101 by 801 Helwerthia on 2024 Jun 14 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 -100 0 0 3 47 29 16 39 8.6 1 81 55 3 38 9 3 56 49 3 35 46 3 59 11 .... - 99 0 0 3 57 23 16 39 8.6 2 81 56 3 48 3 4 6 43 3 45 41 4 9 5 0.02 - 98 0 0 4 7 8 16 39 8.8 3 81 57 3 57 48 4 16 28 3 55 26 4 18 50 0.04 - 97 0 0 4 16 43 16 39 8.9 4 81 57 4 7 23 4 26 2 4 5 1 4 28 24 0.05 - 96 0 0 4 26 7 16 39 9.2 5 81 58 4 16 48 4 35 26 4 14 26 4 37 48 0.06 - 95 0 0 4 35 21 16 39 9.5 6 81 59 4 26 2 4 44 40 4 23 40 4 47 2 0.06 - 94 0 0 4 44 25 16 39 9.9 7 81 60 4 35 6 4 53 43 4 32 44 4 56 5 0.07 - 93 0 0 4 53 17 16 39 10.3 8 81 61 4 43 59 5 2 36 4 41 37 5 4 57 0.07 - 92 0 0 5 1 59 16 39 10.7 9 81 62 4 52 41 5 11 17 4 50 19 5 13 39 0.07 - 91 0 0 5 10 30 16 39 11.3 10 81 63 5 1 12 5 19 47 4 58 50 5 22 9 0.07 - 90 0 0 5 18 49 16 39 11.9 11 81 63 5 9 31 5 28 7 5 7 10 5 30 28 0.07 - 89 0 0 5 26 57 16 39 12.5 12 81 64 5 17 40 5 36 14 5 15 18 5 38 36 0.07 - 88 0 0 5 34 54 16 39 13.2 13 81 65 5 25 36 5 44 11 5 23 15 5 46 32 0.08 - 87 0 0 5 42 39 16 39 14.0 14 82 66 5 33 21 5 51 56 5 31 0 5 54 17 0.08 - 86 0 0 5 50 12 16 39 14.8 15 82 66 5 40 55 5 59 28 5 38 34 6 1 50 0.08 - 85 0 0 5 57 33 16 39 15.7 16 82 67 5 48 16 6 6 49 5 45 55 6 9 11 0.08 - 84 0 0 6 4 42 16 39 16.6 17 82 68 5 55 26 6 13 58 5 53 5 6 16 20 0.08 - 83 0 0 6 11 39 16 39 17.6 18 82 69 6 2 23 6 20 55 6 0 2 6 23 16 0.08 - 82 0 0 6 18 24 16 39 18.6 19 82 69 6 9 8 6 27 40 6 6 47 6 30 1 0.08 - 81 0 0 6 24 56 16 39 19.7 20 82 70 6 15 41 6 34 12 6 13 20 6 36 33 0.08 - 80 0 0 6 31 16 16 39 20.8 21 82 70 6 22 1 6 40 32 6 19 40 6 42 53 0.08 - 79 0 0 6 37 24 16 39 22.0 22 82 71 6 28 8 6 46 39 6 25 47 6 49 0 0.08 - 78 0 0 6 43 18 16 39 23.3 23 82 72 6 34 3 6 52 33 6 31 42 6 54 54 0.08 - 77 0 0 6 49 0 16 39 24.6 24 83 72 6 39 45 6 58 15 6 37 24 7 0 36 0.08 - 76 0 0 6 54 29 16 39 25.9 25 83 72 6 45 14 7 3 44 6 42 53 7 6 4 0.08 - 75 0 0 6 59 45 16 39 27.4 26 83 73 6 50 30 7 8 59 6 48 10 7 11 20 0.08 - 74 0 0 7 4 48 16 39 28.8 27 83 73 6 55 33 7 14 2 6 53 13 7 16 23 0.08 - 73 0 0 7 9 37 16 39 30.3 28 83 73 7 0 23 7 18 52 6 58 2 7 21 12 0.08 - 72 0 0 7 14 14 16 39 31.9 29 83 74 7 5 0 7 23 28 7 2 39 7 25 48 0.08 - 71 0 0 7 18 37 16 39 33.5 30 83 74 7 9 23 7 27 51 7 7 2 7 30 11 0.08 - 70 0 0 7 22 47 16 39 35.1 31 83 74 7 13 33 7 32 0 7 11 12 7 34 21 0.08 - 69 0 0 7 26 43 16 39 36.9 32 83 74 7 17 29 7 35 56 7 15 9 7 38 17 0.08 - 68 0 0 7 30 25 16 39 38.6 33 83 74 7 21 12 7 39 39 7 18 51 7 41 59 0.08 - 67 0 0 7 33 55 16 39 40.4 34 84 74 7 24 41 7 43 8 7 22 21 7 45 28 0.08 - 66 0 0 7 37 10 16 39 42.3 35 84 74 7 27 57 7 46 23 7 25 36 7 48 44 0.08 - 65 0 0 7 40 12 16 39 44.2 36 84 74 7 30 58 7 49 25 7 28 38 7 51 45 0.08 - 64 0 0 7 43 0 16 39 46.1 37 84 73 7 33 47 7 52 13 7 31 26 7 54 33 0.08 - 63 0 0 7 45 34 16 39 48.1 38 84 73 7 36 21 7 54 47 7 34 0 7 57 7 0.08 - 62 0 0 7 47 54 16 39 50.1 39 84 73 7 38 41 7 57 7 7 36 21 7 59 27 0.08 - 61 0 0 7 50 1 16 39 52.2 40 84 72 7 40 48 7 59 13 7 38 27 8 1 34 0.08 - 60 0 0 7 51 53 16 39 54.3 41 84 72 7 42 40 8 1 6 7 40 20 8 3 26 0.08 - 59 0 0 7 53 32 16 39 56.5 42 84 71 7 44 19 8 2 44 7 41 58 8 5 4 0.08 - 58 0 0 7 54 56 16 39 58.7 43 84 71 7 45 43 8 4 9 7 43 23 8 6 29 0.08 - 57 0 0 7 56 7 16 40 1.0 44 84 70 7 46 54 8 5 19 7 44 34 8 7 39 0.08 - 56 0 0 7 57 3 16 40 3.2 45 84 70 7 47 50 8 6 16 7 45 30 8 8 36 0.08 - 55 0 0 7 57 45 16 40 5.6 46 84 69 7 48 33 8 6 58 7 46 12 8 9 18 0.08 - 54 0 0 7 58 14 16 40 8.0 47 85 68 7 49 1 8 7 26 7 46 41 8 9 46 0.08 - 53 0 0 7 58 28 16 40 10.4 48 85 68 7 49 15 8 7 40 7 46 55 8 10 0 0.08 - 52 0 0 7 58 28 16 40 12.8 49 85 67 7 49 15 8 7 40 7 46 55 8 10 0 0.08 - 51 0 0 7 58 14 16 40 15.3 50 85 66 7 49 1 8 7 26 7 46 41 8 9 46 0.08 - 50 0 0 7 57 45 16 40 17.8 51 85 65 7 48 33 8 6 58 7 46 13 8 9 18 0.08 - 49 0 0 7 57 3 16 40 20.4 52 85 65 7 47 50 8 6 16 7 45 30 8 8 36 0.08 - 48 0 0 7 56 7 16 40 23.0 53 85 64 7 46 54 8 5 19 7 44 34 8 7 39 0.08 - 47 0 0 7 54 56 16 40 25.6 54 85 63 7 45 43 8 4 9 7 43 23 8 6 29 0.08 - 46 0 0 7 53 31 16 40 28.3 55 85 62 7 44 19 8 2 44 7 41 58 8 5 4 0.08 - 45 0 0 7 51 53 16 40 31.0 56 85 61 7 42 40 8 1 5 7 40 20 8 3 26 0.08 - 44 0 0 7 50 0 16 40 33.7 57 85 61 7 40 47 7 59 13 7 38 27 8 1 33 0.08 - 43 0 0 7 47 53 16 40 36.5 58 84 60 7 38 40 7 57 6 7 36 20 7 59 26 0.08 - 42 0 0 7 45 32 16 40 39.3 59 84 59 7 36 19 7 54 45 7 33 59 7 57 5 0.08 - 41 0 0 7 42 57 16 40 42.1 60 84 58 7 33 44 7 52 10 7 31 24 7 54 31 0.08 - 40 0 0 7 40 8 16 40 45.0 61 84 57 7 30 55 7 49 22 7 28 35 7 51 42 0.08 - 39 0 0 7 37 6 16 40 47.9 62 84 56 7 27 52 7 46 19 7 25 32 7 48 39 0.08 - 38 0 0 7 33 49 16 40 50.8 63 84 55 7 24 35 7 43 2 7 22 15 7 45 23 0.08 - 37 0 0 7 30 18 16 40 53.7 64 84 54 7 21 5 7 39 32 7 18 44 7 41 52 0.08 - 36 0 0 7 26 34 16 40 56.7 65 83 54 7 17 20 7 35 48 7 15 0 7 38 8 0.08 - 35 0 0 7 22 36 16 40 59.7 66 83 53 7 13 22 7 31 50 7 11 2 7 34 10 0.08 - 34 0 0 7 18 24 16 41 2.7 67 83 52 7 9 10 7 27 38 7 6 50 7 29 59 0.08 - 33 0 0 7 13 59 16 41 5.8 68 82 51 7 4 45 7 23 13 7 2 24 7 25 34 0.08 - 32 0 0 7 9 20 16 41 8.8 69 82 50 7 0 6 7 18 34 6 57 45 7 20 55 0.08 - 31 0 0 7 4 28 16 41 11.9 70 82 49 6 55 13 7 13 42 6 52 52 7 16 3 0.08 - 30 0 0 6 59 22 16 41 15.0 71 81 48 6 50 7 7 8 36 6 47 46 7 10 57 0.08 - 29 0 0 6 54 3 16 41 18.2 72 81 47 6 44 48 7 3 17 6 42 27 7 5 38 0.08 - 28 0 0 6 48 30 16 41 21.3 73 80 46 6 39 15 6 57 45 6 36 54 7 0 6 0.08 - 27 0 0 6 42 44 16 41 24.5 74 79 45 6 33 29 6 52 0 6 31 8 6 54 20 0.08 - 26 0 0 6 36 46 16 41 27.7 75 78 44 6 27 30 6 46 1 6 25 9 6 48 22 0.08 - 25 0 0 6 30 34 16 41 30.9 75 77 43 6 21 18 6 39 50 6 18 57 6 42 10 0.08 - 24 0 0 6 24 9 16 41 34.1 76 76 42 6 14 53 6 33 25 6 12 32 6 35 46 0.08 - 23 0 0 6 17 32 16 41 37.3 77 74 41 6 8 16 6 26 48 6 5 54 6 29 9 0.08 - 22 0 0 6 10 41 16 41 40.6 78 73 41 6 1 25 6 19 58 5 59 4 6 22 19 0.08 - 21 0 0 6 3 39 16 41 43.9 79 71 40 5 54 22 6 12 55 5 52 1 6 15 16 0.08 - 20 0 0 5 56 23 16 41 47.1 80 68 39 5 47 6 6 5 40 5 44 45 6 8 1 0.08 - 19 0 0 5 48 56 16 41 50.4 81 65 38 5 39 39 5 58 13 5 37 17 6 0 34 0.08 - 18 0 0 5 41 16 16 41 53.7 82 61 37 5 31 58 5 50 33 5 29 37 5 52 54 0.08 - 17 0 0 5 33 24 16 41 57.0 83 57 36 5 24 6 5 42 41 5 21 45 5 45 2 0.08 - 16 0 0 5 25 20 16 42 0.3 83 51 35 5 16 2 5 34 37 5 13 40 5 36 59 0.08 - 15 0 0 5 17 4 16 42 3.7 84 44 34 5 7 46 5 26 21 5 5 24 5 28 43 0.08 - 14 0 0 5 8 36 16 42 7.0 85 36 33 4 59 18 5 17 54 4 56 56 5 20 16 0.08 - 13 0 0 4 59 57 16 42 10.3 85 25 32 4 50 38 5 9 15 4 48 16 5 11 37 0.08 - 12 0 0 4 51 6 16 42 13.7 85 14 31 4 41 47 5 0 25 4 39 25 5 2 46 0.08 - 11 0 0 4 42 4 16 42 17.0 85 2 30 4 32 45 4 51 23 4 30 23 4 53 45 0.08 - 10 0 0 4 32 51 16 42 20.3 85 350 29 4 23 32 4 42 10 4 21 10 4 44 32 0.08 - 9 0 0 4 23 27 16 42 23.7 85 340 28 4 14 8 4 32 46 4 11 46 4 35 8 0.08 - 8 0 0 4 13 52 16 42 27.0 84 332 27 4 4 32 4 23 12 4 2 10 4 25 34 0.08 - 7 0 0 4 4 7 16 42 30.4 83 325 26 3 54 47 4 13 27 3 52 25 4 15 49 0.08 - 6 0 0 3 54 11 16 42 33.7 83 319 25 3 44 51 4 3 31 3 42 28 4 5 53 0.08 - 5 0 0 3 44 5 16 42 37.0 82 315 24 3 34 44 3 53 25 3 32 22 3 55 47 0.08 - 4 0 0 3 33 49 16 42 40.4 81 311 23 3 24 28 3 43 9 3 22 6 3 45 32 0.08 - 3 0 0 3 23 23 16 42 43.7 80 308 22 3 14 1 3 32 43 3 11 39 3 35 6 0.08 - 2 0 0 3 12 47 16 42 47.0 79 306 21 3 3 25 3 22 8 3 1 3 3 24 30 0.08 - 1 0 0 3 2 1 16 42 50.3 78 304 20 2 52 40 3 11 23 2 50 17 3 13 45 0.08 0 0 0 2 51 7 16 42 53.6 77 302 19 2 41 45 3 0 29 2 39 22 3 2 51 0.08 1 0 0 2 40 3 16 42 56.9 76 300 18 2 30 41 2 49 25 2 28 18 2 51 48 0.08 2 0 0 2 28 51 16 43 0.1 75 299 17 2 19 28 2 38 13 2 17 6 2 40 35 0.08 3 0 0 2 17 29 16 43 3.4 74 298 16 2 8 7 2 26 52 2 5 44 2 29 14 0.08 4 0 0 2 6 0 16 43 6.7 73 297 15 1 56 37 2 15 22 1 54 14 2 17 45 0.08 5 0 0 1 54 22 16 43 9.9 72 296 14 1 44 59 2 3 45 1 42 36 2 6 7 0.08 6 0 0 1 42 36 16 43 13.1 71 295 13 1 33 13 1 51 59 1 30 50 1 54 22 0.08 7 0 0 1 30 42 16 43 16.3 70 295 12 1 21 19 1 40 5 1 18 56 1 42 28 0.08 8 0 0 1 18 41 16 43 19.5 69 294 11 1 9 17 1 28 4 1 6 54 1 30 27 0.08 9 0 0 1 6 32 16 43 22.6 68 293 10 0 57 8 1 15 56 0 54 45 1 18 19 0.08 10 0 0 0 54 17 16 43 25.8 67 293 9 0 44 53 1 3 41 0 42 29 1 6 4 0.08 11 0 0 0 41 54 16 43 28.9 66 292 8 0 32 30 0 51 19 0 30 7 0 53 42 0.08 12 0 0 0 29 25 16 43 32.0 65 292 7 0 20 1 0 38 50 0 17 38 0 41 13 0.08 13 0 0 0 16 50 16 43 35.0 64 292 6 0 7 25 0 26 15 0 5 2 0 28 38 0.08 14 0 0 0 4 9 16 43 38.1 63 291 5 - 0 5 16 0 13 33 - 0 7 39 0 15 57 0.08 15 0 0 - 0 8 38 16 43 41.1 62 291 4 - 0 18 3 0 0 47 - 0 20 27 0 3 10 0.08 16 0 0 - 0 21 31 16 43 44.1 61 291 3 - 0 30 56 - 0 12 6 - 0 33 20 - 0 9 43 0.08 17 0 0 - 0 34 29 16 43 47.0 60 290 2 - 0 43 54 - 0 25 4 - 0 46 18 - 0 22 40 0.08 18 0 0 - 0 47 32 16 43 50.0 59 290 1 - 0 56 58 - 0 38 7 - 0 59 21 - 0 35 43 0.08 19 0 0 - 1 0 40 16 43 52.9 58 290 0 - 1 10 5 - 0 51 14 - 1 12 29 - 0 48 51 0.08 20 0 0 - 1 13 52 16 43 55.7 57 290 -1 - 1 23 18 - 1 4 26 - 1 25 41 - 1 2 3 0.08 21 0 0 - 1 27 8 16 43 58.6 56 289 -2 - 1 36 34 - 1 17 42 - 1 38 58 - 1 15 19 0.08 22 0 0 - 1 40 28 16 44 1.4 55 289 -3 - 1 49 55 - 1 31 3 - 1 52 18 - 1 28 39 0.08 23 0 0 - 1 53 52 16 44 4.1 54 289 -4 - 2 3 19 - 1 44 26 - 2 5 42 - 1 42 3 0.08 24 0 0 - 2 7 20 16 44 6.9 53 289 -5 - 2 16 46 - 1 57 54 - 2 19 10 - 1 55 30 0.08 25 0 0 - 2 20 50 16 44 9.6 52 289 -6 - 2 30 16 - 2 11 24 - 2 32 40 - 2 9 0 0.08 26 0 0 - 2 34 23 16 44 12.2 51 288 -7 - 2 43 50 - 2 24 57 - 2 46 13 - 2 22 33 0.08 27 0 0 - 2 47 59 16 44 14.8 50 288 -8 - 2 57 26 - 2 38 32 - 2 59 49 - 2 36 9 0.08 28 0 0 - 3 1 37 16 44 17.4 49 288 -9 - 3 11 3 - 2 52 10 - 3 13 27 - 2 49 47 0.08 29 0 0 - 3 15 17 16 44 19.9 48 288 -10 - 3 24 43 - 3 5 50 - 3 27 7 - 3 3 26 0.08 30 0 0 - 3 28 58 16 44 22.4 47 288 -11 - 3 38 25 - 3 19 32 - 3 40 49 - 3 17 8 0.08 31 0 0 - 3 42 41 16 44 24.9 46 288 -12 - 3 52 8 - 3 33 14 - 3 54 32 - 3 30 51 0.08 32 0 0 - 3 56 25 16 44 27.3 45 287 -13 - 4 5 52 - 3 46 58 - 4 8 16 - 3 44 35 0.08 33 0 0 - 4 10 10 16 44 29.6 44 287 -14 - 4 19 37 - 4 0 43 - 4 22 1 - 3 58 19 0.08 34 0 0 - 4 23 55 16 44 32.0 43 287 -16 - 4 33 22 - 4 14 29 - 4 35 46 - 4 12 5 0.08 35 0 0 - 4 37 41 16 44 34.2 42 287 -17 - 4 47 8 - 4 28 14 - 4 49 32 - 4 25 50 0.08 36 0 0 - 4 51 26 16 44 36.5 41 287 -18 - 5 0 53 - 4 42 0 - 5 3 17 - 4 39 36 0.08 37 0 0 - 5 5 12 16 44 38.6 40 287 -19 - 5 14 38 - 4 55 45 - 5 17 2 - 4 53 21 0.08 38 0 0 - 5 18 56 16 44 40.8 39 287 -20 - 5 28 23 - 5 9 29 - 5 30 47 - 5 7 6 0.08 39 0 0 - 5 32 40 16 44 42.8 38 286 -21 - 5 42 7 - 5 23 13 - 5 44 30 - 5 20 49 0.08 40 0 0 - 5 46 22 16 44 44.9 37 286 -22 - 5 55 49 - 5 36 56 - 5 58 13 - 5 34 32 0.08 41 0 0 - 6 0 3 16 44 46.9 35 286 -23 - 6 9 30 - 5 50 37 - 6 11 54 - 5 48 13 0.08 42 0 0 - 6 13 42 16 44 48.8 34 286 -24 - 6 23 9 - 6 4 16 - 6 25 33 - 6 1 52 0.08 43 0 0 - 6 27 20 16 44 50.7 33 286 -25 - 6 36 46 - 6 17 53 - 6 39 10 - 6 15 29 0.08 44 0 0 - 6 40 55 16 44 52.5 32 286 -26 - 6 50 21 - 6 31 28 - 6 52 45 - 6 29 4 0.08 45 0 0 - 6 54 27 16 44 54.3 31 286 -27 - 7 3 53 - 6 45 1 - 7 6 17 - 6 42 37 0.08 46 0 0 - 7 7 56 16 44 56.0 30 285 -28 - 7 17 23 - 6 58 30 - 7 19 47 - 6 56 6 0.08 47 0 0 - 7 21 23 16 44 57.7 29 285 -29 - 7 30 49 - 7 11 57 - 7 33 13 - 7 9 33 0.08 48 0 0 - 7 34 46 16 44 59.3 28 285 -30 - 7 44 12 - 7 25 20 - 7 46 36 - 7 22 56 0.08 49 0 0 - 7 48 5 16 45 0.8 27 285 -31 - 7 57 31 - 7 38 39 - 7 59 55 - 7 36 15 0.08 50 0 0 - 8 1 20 16 45 2.4 26 285 -32 - 8 10 46 - 7 51 55 - 8 13 10 - 7 49 31 0.08 51 0 0 - 8 14 32 16 45 3.8 25 285 -33 - 8 23 57 - 8 5 6 - 8 26 21 - 8 2 42 0.08 52 0 0 - 8 27 38 16 45 5.2 24 284 -34 - 8 37 4 - 8 18 13 - 8 39 28 - 8 15 49 0.08 53 0 0 - 8 40 40 16 45 6.6 23 284 -35 - 8 50 6 - 8 31 15 - 8 52 29 - 8 28 52 0.08 54 0 0 - 8 53 38 16 45 7.8 22 284 -36 - 9 3 3 - 8 44 12 - 9 5 26 - 8 41 49 0.08 55 0 0 - 9 6 29 16 45 9.1 21 284 -37 - 9 15 55 - 8 57 4 - 9 18 18 - 8 54 41 0.08 56 0 0 - 9 19 16 16 45 10.2 20 284 -38 - 9 28 41 - 9 9 51 - 9 31 4 - 9 7 28 0.08 57 0 0 - 9 31 57 16 45 11.4 19 284 -39 - 9 41 22 - 9 22 32 - 9 43 45 - 9 20 9 0.08 58 0 0 - 9 44 32 16 45 12.4 18 283 -40 - 9 53 56 - 9 35 7 - 9 56 20 - 9 32 44 0.08 59 0 0 - 9 57 1 16 45 13.4 17 283 -41 -10 6 25 - 9 47 36 -10 8 48 - 9 45 13 0.08 60 0 0 -10 9 23 16 45 14.4 16 283 -42 -10 18 47 - 9 59 59 -10 21 10 - 9 57 36 0.08 61 0 0 -10 21 39 16 45 15.3 15 283 -43 -10 31 3 -10 12 15 -10 33 26 -10 9 52 0.08 62 0 0 -10 33 48 16 45 16.1 14 283 -44 -10 43 12 -10 24 24 -10 45 35 -10 22 1 0.08 63 0 0 -10 45 50 16 45 16.9 13 282 -45 -10 55 13 -10 36 26 -10 57 36 -10 34 3 0.08 64 0 0 -10 57 45 16 45 17.6 12 282 -46 -11 7 8 -10 48 21 -11 9 31 -10 45 58 0.08 65 0 0 -11 9 32 16 45 18.3 11 282 -47 -11 18 55 -11 0 9 -11 21 18 -10 57 46 0.08 66 0 0 -11 21 11 16 45 18.9 10 282 -48 -11 30 34 -11 11 48 -11 32 57 -11 9 26 0.08 67 0 0 -11 32 43 16 45 19.4 9 282 -49 -11 42 6 -11 23 20 -11 44 29 -11 20 58 0.08 68 0 0 -11 44 7 16 45 19.9 8 282 -50 -11 53 29 -11 34 44 -11 55 52 -11 32 22 0.08 69 0 0 -11 55 22 16 45 20.3 7 281 -51 -12 4 44 -11 46 0 -12 7 7 -11 43 37 0.08 70 0 0 -12 6 29 16 45 20.7 6 281 -51 -12 15 51 -11 57 7 -12 18 14 -11 54 44 0.08 71 0 0 -12 17 27 16 45 21.0 5 281 -52 -12 26 49 -12 8 5 -12 29 12 -12 5 43 0.08 72 0 0 -12 28 17 16 45 21.3 4 281 -53 -12 37 38 -12 18 55 -12 40 1 -12 16 33 0.07 73 0 0 -12 38 57 16 45 21.5 3 280 -54 -12 48 18 -12 29 36 -12 50 41 -12 27 14 0.07 74 0 0 -12 49 28 16 45 21.6 2 280 -55 -12 58 49 -12 40 7 -13 1 12 -12 37 45 0.07 75 0 0 -12 59 50 16 45 21.7 1 280 -56 -13 9 11 -12 50 30 -13 11 33 -12 48 7 0.06 76 0 0 -13 10 3 16 45 21.8 0 280 -57 -13 19 23 -13 0 42 -13 21 46 -12 58 20 -0.08 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.4 Data for the target star ------------------------ * name: UCAC4 498-055101 * constellation : Leo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 09 31 29.5384 DE: +09 35 58.476 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 09 31 29.5383 DE: +09 35 58.477 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.7 * B mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (801) Helwerthia asteroid class: approx. diameter [km]: 34 approx. diameter ["]: 0.017 distance from Earth [AU]: 2.77570 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#57 date of fit: 2023 Apr 27 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): 0.010", 0.002", 95.7° remarks: * orbital elements for (801)Helwerthia : Mean anomaly = 359.4919654487 deg Arg. of pericenter = 337.3071787069 deg Long. of node = 185.9046704277 deg Inclination = 14.1423346128 deg Eccentricity = 0.0764634031 Semimajor axis = 2.6042543891 AU Perihelion dist = 2.4051242360 AU Mag: H = 11.62, G = 0.15 Epoch of elements : MJD 60475.69600817 TDT (2024 Jun 14.6960) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#572023Apr27,0.99,2024,6,14,16.704191,-0.012806,-0.082573,19.011620,-2.840977,0.004260,-0.001690,-0.000001,0.000000 -10.8359,9.4931,-70.44,23.31,False UCAC4 498-055101,9.52487181,9.5995766,11.79,11.67,11.61,0.0,0,,9.54643508,9.4931033,5.12,4.74,0,0,0 801,Helwerthia,16.78,33.835,2.7757,0,0,4.071,-9.00,,1.8,0 0,359.3287,2024,6,14,337.3072,185.9047,14.1423,0.07646,2.60425,2.40512,11.62,5.0,0.15 1.127,0.0100,0.0021,96,0.0021,Known errors,1.44,0,-1,-1 20240614_055101,60139.38 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 09:14 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org