IOTA/IOTA-ES occultation update for (1778) Alfven / UCAC4 565-031713 event on 2024 Jan 15, 00:21 UT Visible from Summary ------- On 2024 Jan 15 UT, the 20.6054276888472 km diameter asteroid (1778) Alfven will occult a 7.4 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 9.36 mag to 16.80 mag (the magnitude of the asteroid) for at most 1.930 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 Jan 15, 00:13 - 2024 Jan 15, 00:29 * geocentric midpoint of event [JD]: 2460324.51495245 * magnitude of target star: 7.44 * magnitude drop [mag]: 9.36 * estimated maximum duration [s]: 1.930 * Moon: 16 % sunlit, 118° distance * Sun: 166° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 28 * 1 sigma uncertainty interval [path widths]: +/- 0.26 * 1 sigma uncertainty interval [seconds]: +/- 2.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.020, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.020", 0.004", 92°) * approx speed of asteroid's shadow [km/s]: 14.3036 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 565-031713 by 1778 Alfven on 2024 Jan 15 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 -111 0 0 4 21 31 0 28 57.3 1 67 13 4 29 39 4 13 23 4 33 55 4 9 8 4 25 33 4 17 30 .... -110 0 0 4 46 51 0 28 57.1 2 67 12 4 54 58 4 38 43 4 59 13 4 34 28 4 50 52 4 42 49 -0.03 -109 0 0 5 11 58 0 28 56.7 3 67 11 5 20 5 5 3 51 5 24 20 4 59 36 5 15 59 5 7 57 0.00 -108 0 0 5 36 53 0 28 56.2 4 67 10 5 44 59 5 28 47 5 49 14 5 24 32 5 40 54 5 32 52 0.02 -107 0 0 6 1 35 0 28 55.6 5 67 9 6 9 41 5 53 30 6 13 55 5 49 15 6 5 35 5 57 35 0.03 -106 0 0 6 26 4 0 28 54.8 6 68 8 6 34 9 6 17 59 6 38 23 6 13 45 6 30 4 6 22 4 0.03 -105 0 0 6 50 18 0 28 53.8 7 68 7 6 58 23 6 42 14 7 2 36 6 38 0 6 54 18 6 46 19 0.04 -104 0 0 7 14 19 0 28 52.7 8 68 6 7 22 22 7 6 15 7 26 36 7 2 1 7 18 18 7 10 19 0.04 -103 0 0 7 38 4 0 28 51.5 9 68 5 7 46 7 7 30 1 7 50 20 7 25 47 7 42 3 7 34 5 0.04 -102 0 0 8 1 34 0 28 50.0 10 68 4 8 9 36 7 53 31 8 13 49 7 49 18 8 5 32 7 57 35 0.04 -101 0 0 8 24 48 0 28 48.5 11 68 3 8 32 50 8 16 46 8 37 2 8 12 34 8 28 46 8 20 49 0.05 -100 0 0 8 47 46 0 28 46.8 12 68 2 8 55 47 8 39 45 8 59 59 8 35 33 8 51 44 8 43 48 0.05 - 99 0 0 9 10 27 0 28 45.0 13 68 0 9 18 27 9 2 27 9 22 39 8 58 15 9 14 25 9 6 29 0.05 - 98 0 0 9 32 52 0 28 43.0 15 69 -1 9 40 51 9 24 52 9 45 2 9 20 41 9 36 49 9 28 54 0.05 - 97 0 0 9 54 59 0 28 40.9 16 69 -2 10 2 58 9 47 0 10 7 8 9 42 49 9 58 56 9 51 2 0.05 - 96 0 0 10 16 48 0 28 38.6 17 69 -3 10 24 46 10 8 50 10 28 57 10 4 39 10 20 45 10 12 51 0.05 - 95 0 0 10 38 19 0 28 36.2 18 69 -4 10 46 17 10 30 22 10 50 27 10 26 12 10 42 16 10 34 23 0.05 - 94 0 0 10 59 32 0 28 33.7 19 69 -5 11 7 29 10 51 36 11 11 39 10 47 26 11 3 28 10 55 36 0.05 - 93 0 0 11 20 27 0 28 31.1 20 69 -6 11 28 23 11 12 31 11 32 32 11 8 21 11 24 22 11 16 31 0.05 - 92 0 0 11 41 2 0 28 28.3 21 70 -7 11 48 57 11 33 7 11 53 6 11 28 58 11 44 57 11 37 7 0.05 - 91 0 0 12 1 19 0 28 25.4 22 70 -8 12 9 13 11 53 24 12 13 22 11 49 15 12 5 13 11 57 24 0.05 - 90 0 0 12 21 15 0 28 22.4 23 70 -9 12 29 9 12 13 22 12 33 17 12 9 13 12 25 10 12 17 21 0.05 - 89 0 0 12 40 52 0 28 19.3 24 70 -10 12 48 45 12 32 59 12 52 53 12 28 52 12 44 46 12 36 58 0.05 - 88 0 0 13 0 10 0 28 16.0 25 70 -11 13 8 2 12 52 17 13 12 9 12 48 10 13 4 3 12 56 16 0.05 - 87 0 0 13 19 6 0 28 12.6 26 71 -12 13 26 58 13 11 15 13 31 5 13 7 8 13 23 0 13 15 13 0.05 - 86 0 0 13 37 43 0 28 9.2 27 71 -13 13 45 34 13 29 52 13 49 40 13 25 46 13 41 36 13 33 50 0.05 - 85 0 0 13 55 59 0 28 5.6 28 71 -14 14 3 49 13 48 9 14 7 55 13 44 3 13 59 52 13 52 6 0.05 - 84 0 0 14 13 54 0 28 1.9 29 71 -15 14 21 43 14 6 5 14 25 49 14 1 59 14 17 46 14 10 2 0.05 - 83 0 0 14 31 28 0 27 58.0 30 72 -16 14 39 17 14 23 40 14 43 22 14 19 34 14 35 20 14 27 37 0.05 - 82 0 0 14 48 42 0 27 54.1 31 72 -17 14 56 29 14 40 54 15 0 34 14 36 49 14 52 33 14 44 50 0.05 - 81 0 0 15 5 33 0 27 50.1 32 72 -18 15 13 20 14 57 46 15 17 25 14 53 42 15 9 25 15 1 42 0.05 - 80 0 0 15 22 4 0 27 46.0 33 72 -19 15 29 50 15 14 18 15 33 54 15 10 13 15 25 55 15 18 13 0.05 - 79 0 0 15 38 13 0 27 41.8 34 73 -20 15 45 58 15 30 27 15 50 2 15 26 23 15 42 3 15 34 22 0.05 - 78 0 0 15 54 0 0 27 37.5 35 73 -21 16 1 45 15 46 15 16 5 49 15 42 12 15 57 50 15 50 10 0.05 - 77 0 0 16 9 26 0 27 33.1 36 73 -22 16 17 10 16 1 41 16 21 13 15 57 38 16 13 15 16 5 36 0.05 - 76 0 0 16 24 29 0 27 28.6 37 73 -23 16 32 13 16 16 46 16 36 16 16 12 43 16 28 19 16 20 40 0.05 - 75 0 0 16 39 11 0 27 24.0 38 74 -24 16 46 54 16 31 28 16 50 56 16 27 26 16 43 0 16 35 22 0.05 - 74 0 0 16 53 31 0 27 19.3 39 74 -25 17 1 13 16 45 48 17 5 15 16 41 46 16 57 19 16 49 42 0.05 - 73 0 0 17 7 28 0 27 14.6 40 74 -26 17 15 10 16 59 47 17 19 11 16 55 45 17 11 16 17 3 40 0.05 - 72 0 0 17 21 3 0 27 9.8 41 74 -27 17 28 44 17 13 23 17 32 46 17 9 21 17 24 51 17 17 15 0.05 - 71 0 0 17 34 16 0 27 4.8 42 75 -28 17 41 57 17 26 36 17 45 58 17 22 35 17 38 4 17 30 29 0.05 - 70 0 0 17 47 7 0 26 59.8 42 75 -29 17 54 47 17 39 27 17 58 47 17 35 27 17 50 54 17 43 20 0.05 - 69 0 0 17 59 35 0 26 54.8 43 75 -30 18 7 14 17 51 56 18 11 15 17 47 56 18 3 22 17 55 48 0.05 - 68 0 0 18 11 41 0 26 49.6 44 75 -30 18 19 19 18 4 3 18 23 19 18 0 2 18 15 28 18 7 54 0.05 - 67 0 0 18 23 24 0 26 44.4 45 76 -31 18 31 2 18 15 47 18 35 2 18 11 47 18 27 11 18 19 38 0.05 - 66 0 0 18 34 45 0 26 39.1 46 76 -32 18 42 22 18 27 8 18 46 22 18 23 8 18 38 31 18 30 59 0.05 - 65 0 0 18 45 43 0 26 33.7 47 76 -33 18 53 20 18 38 7 18 57 19 18 34 7 18 49 29 18 41 57 0.05 - 64 0 0 18 56 19 0 26 28.3 48 76 -34 19 3 55 18 48 43 19 7 54 18 44 44 19 0 5 18 52 33 0.05 - 63 0 0 19 6 32 0 26 22.8 49 77 -35 19 14 7 18 58 56 19 18 6 18 54 57 19 10 17 19 2 46 0.05 - 62 0 0 19 16 22 0 26 17.3 50 77 -36 19 23 57 19 8 47 19 27 56 19 4 49 19 20 7 19 12 37 0.05 - 61 0 0 19 25 50 0 26 11.6 51 77 -37 19 33 24 19 18 15 19 37 23 19 14 17 19 29 35 19 22 5 0.05 - 60 0 0 19 34 55 0 26 5.9 52 77 -38 19 42 29 19 27 21 19 46 27 19 23 23 19 38 40 19 31 10 0.05 - 59 0 0 19 43 37 0 26 0.2 53 78 -39 19 51 11 19 36 4 19 55 9 19 32 6 19 47 22 19 39 53 0.05 - 58 0 0 19 51 57 0 25 54.4 54 78 -40 19 59 30 19 44 24 20 3 27 19 40 26 19 55 41 19 48 12 0.05 - 57 0 0 19 59 54 0 25 48.5 55 78 -41 20 7 27 19 52 21 20 11 24 19 48 24 20 3 38 19 56 10 0.05 - 56 0 0 20 7 28 0 25 42.6 56 78 -42 20 15 0 19 59 55 20 18 57 19 55 58 20 11 12 20 3 44 0.05 - 55 0 0 20 14 39 0 25 36.6 57 79 -43 20 22 11 20 7 7 20 26 8 20 3 10 20 18 23 20 10 56 0.05 - 54 0 0 20 21 28 0 25 30.6 57 79 -44 20 29 0 20 13 56 20 32 56 20 10 0 20 25 12 20 17 45 0.05 - 53 0 0 20 27 54 0 25 24.5 58 79 -44 20 35 25 20 20 23 20 39 22 20 16 26 20 31 38 20 24 11 0.05 - 52 0 0 20 33 58 0 25 18.4 59 79 -45 20 41 28 20 26 26 20 45 25 20 22 30 20 37 41 20 30 14 0.05 - 51 0 0 20 39 38 0 25 12.2 60 79 -46 20 47 9 20 32 7 20 51 5 20 28 11 20 43 21 20 35 55 0.05 - 50 0 0 20 44 56 0 25 6.0 61 80 -47 20 52 26 20 37 26 20 56 22 20 33 30 20 48 39 20 41 13 0.05 - 49 0 0 20 49 51 0 24 59.8 62 80 -48 20 57 21 20 42 21 21 1 17 20 38 25 20 53 34 20 46 8 0.05 - 48 0 0 20 54 24 0 24 53.4 63 80 -49 21 1 54 20 46 54 21 5 49 20 42 58 20 58 6 20 50 41 0.05 - 47 0 0 20 58 34 0 24 47.1 64 80 -50 21 6 3 20 51 4 21 9 59 20 47 8 21 2 16 20 54 51 0.05 - 46 0 0 21 2 21 0 24 40.7 65 80 -51 21 9 50 20 54 51 21 13 46 20 50 56 21 6 3 20 58 38 0.05 - 45 0 0 21 5 45 0 24 34.2 66 81 -52 21 13 14 20 58 16 21 17 10 20 54 20 21 9 28 21 2 3 0.05 - 44 0 0 21 8 47 0 24 27.8 67 81 -53 21 16 16 21 1 18 21 20 11 20 57 23 21 12 29 21 5 5 0.05 - 43 0 0 21 11 26 0 24 21.2 67 81 -54 21 18 55 21 3 57 21 22 50 21 0 2 21 15 8 21 7 44 0.05 - 42 0 0 21 13 43 0 24 14.7 68 81 -54 21 21 12 21 6 14 21 25 7 21 2 19 21 17 25 21 10 1 0.05 - 41 0 0 21 15 37 0 24 8.1 69 81 -55 21 23 5 21 8 8 21 27 0 21 4 13 21 19 19 21 11 55 0.05 - 40 0 0 21 17 8 0 24 1.5 70 81 -56 21 24 36 21 9 39 21 28 32 21 5 44 21 20 50 21 13 26 0.05 - 39 0 0 21 18 16 0 23 54.8 71 81 -57 21 25 45 21 10 48 21 29 40 21 6 53 21 21 59 21 14 34 0.05 - 38 0 0 21 19 3 0 23 48.1 72 81 -58 21 26 31 21 11 34 21 30 26 21 7 39 21 22 45 21 15 21 0.05 - 37 0 0 21 19 26 0 23 41.4 73 81 -59 21 26 54 21 11 57 21 30 49 21 8 2 21 23 8 21 15 44 0.05 - 36 0 0 21 19 27 0 23 34.6 74 81 -60 21 26 55 21 11 58 21 30 50 21 8 3 21 23 9 21 15 45 0.05 - 35 0 0 21 19 5 0 23 27.8 75 80 -61 21 26 34 21 11 36 21 30 29 21 7 41 21 22 47 21 15 23 0.05 - 34 0 0 21 18 21 0 23 21.0 75 80 -62 21 25 49 21 10 52 21 29 44 21 6 57 21 22 3 21 14 39 0.05 - 33 0 0 21 17 14 0 23 14.2 76 80 -63 21 24 42 21 9 45 21 28 37 21 5 50 21 20 56 21 13 32 0.05 - 32 0 0 21 15 44 0 23 7.3 77 79 -63 21 23 13 21 8 16 21 27 8 21 4 20 21 19 26 21 12 2 0.05 - 31 0 0 21 13 52 0 23 0.4 78 79 -64 21 21 21 21 6 24 21 25 16 21 2 28 21 17 34 21 10 10 0.05 - 30 0 0 21 11 38 0 22 53.5 79 78 -65 21 19 7 21 4 9 21 23 2 21 0 14 21 15 20 21 7 56 0.05 - 29 0 0 21 9 1 0 22 46.5 80 77 -66 21 16 30 21 1 32 21 20 25 20 57 36 21 12 43 21 5 19 0.05 - 28 0 0 21 6 1 0 22 39.6 81 76 -67 21 13 30 20 58 32 21 17 26 20 54 37 21 9 44 21 2 19 0.05 - 27 0 0 21 2 39 0 22 32.6 82 74 -68 21 10 8 20 55 10 21 14 4 20 51 14 21 6 22 20 58 57 0.05 - 26 0 0 20 58 55 0 22 25.5 82 73 -69 21 6 24 20 51 25 21 10 20 20 47 29 21 2 37 20 55 12 0.05 - 25 0 0 20 54 47 0 22 18.5 83 70 -70 21 2 17 20 47 18 21 6 13 20 43 22 20 58 30 20 51 5 0.05 - 24 0 0 20 50 18 0 22 11.5 84 67 -71 20 57 48 20 42 48 21 1 44 20 38 52 20 54 1 20 46 35 0.05 - 23 0 0 20 45 26 0 22 4.4 85 62 -71 20 52 56 20 37 55 20 56 52 20 33 59 20 49 9 20 41 43 0.05 - 22 0 0 20 40 11 0 21 57.3 85 56 -72 20 47 42 20 32 41 20 51 38 20 28 45 20 43 54 20 36 28 0.05 - 21 0 0 20 34 34 0 21 50.2 86 47 -73 20 42 5 20 27 3 20 46 1 20 23 7 20 38 18 20 30 51 0.05 - 20 0 0 20 28 35 0 21 43.1 86 34 -74 20 36 6 20 21 4 20 40 3 20 17 7 20 32 18 20 24 52 0.05 - 19 0 0 20 22 13 0 21 36.0 87 18 -75 20 29 45 20 14 42 20 33 41 20 10 45 20 25 57 20 18 30 0.06 - 18 0 0 20 15 29 0 21 28.8 87 359 -76 20 23 1 20 7 57 20 26 58 20 4 0 20 19 13 20 11 45 0.06 - 17 0 0 20 8 22 0 21 21.7 87 342 -77 20 15 55 20 0 50 20 19 52 19 56 53 20 12 6 20 4 39 0.05 - 16 0 0 20 0 53 0 21 14.5 86 329 -78 20 8 26 19 53 21 20 12 23 19 49 24 20 4 38 19 57 9 0.05 - 15 0 0 19 53 2 0 21 7.4 86 319 -79 20 0 35 19 45 29 20 4 33 19 41 32 19 56 46 19 49 18 0.05 - 14 0 0 19 44 49 0 21 0.2 85 313 -79 19 52 22 19 37 15 19 56 20 19 33 17 19 48 33 19 41 4 0.05 - 13 0 0 19 36 13 0 20 53.0 84 308 -80 19 43 47 19 28 39 19 47 44 19 24 41 19 39 57 19 32 28 0.05 - 12 0 0 19 27 14 0 20 45.8 83 304 -81 19 34 49 19 19 40 19 38 47 19 15 42 19 30 59 19 23 30 0.05 - 11 0 0 19 17 54 0 20 38.7 82 301 -82 19 25 29 19 10 19 19 29 27 19 6 21 19 21 39 19 14 9 0.05 - 10 0 0 19 8 11 0 20 31.5 82 299 -83 19 15 47 19 0 36 19 19 45 18 56 37 19 11 57 19 4 26 0.05 - 9 0 0 18 58 7 0 20 24.3 81 298 -84 19 5 42 18 50 31 19 9 41 18 46 32 19 1 52 18 54 21 0.05 - 8 0 0 18 47 40 0 20 17.1 80 297 -84 18 55 16 18 40 3 18 59 15 18 36 4 18 51 26 18 43 54 0.05 - 7 0 0 18 36 51 0 20 10.0 79 296 -85 18 44 28 18 29 14 18 48 27 18 25 14 18 40 37 18 33 5 0.05 - 6 0 0 18 25 40 0 20 2.8 78 295 -86 18 33 17 18 18 2 18 37 17 18 14 2 18 29 26 18 21 53 0.05 - 5 0 0 18 14 7 0 19 55.6 77 294 -86 18 21 45 18 6 29 18 25 45 18 2 29 18 17 53 18 10 20 0.05 - 4 0 0 18 2 12 0 19 48.5 76 294 -86 18 9 50 17 54 33 18 13 50 17 50 33 18 5 59 17 58 25 0.05 - 3 0 0 17 49 55 0 19 41.3 75 293 -86 17 57 34 17 42 16 18 1 34 17 38 15 17 53 42 17 46 8 0.05 - 2 0 0 17 37 16 0 19 34.2 74 293 -86 17 44 56 17 29 36 17 48 57 17 25 35 17 41 4 17 33 29 0.05 - 1 0 0 17 24 16 0 19 27.1 73 293 -86 17 31 56 17 16 35 17 35 57 17 12 34 17 28 4 17 20 28 0.05 - 0 0 0 17 10 54 0 19 20.0 73 292 -85 17 18 35 17 3 13 17 22 36 16 59 11 17 14 42 17 7 6 0.05 1 0 0 16 57 10 0 19 12.9 72 292 -84 17 4 52 16 49 28 17 8 53 16 45 26 17 0 58 16 53 22 0.05 2 0 0 16 43 5 0 19 5.8 71 292 -84 16 50 47 16 35 23 16 54 49 16 31 20 16 46 54 16 39 16 0.05 3 0 0 16 28 38 0 18 58.8 70 292 -83 16 36 21 16 20 55 16 40 24 16 16 53 16 32 27 16 24 49 0.05 4 0 0 16 13 51 0 18 51.8 69 292 -82 16 21 34 16 6 7 16 25 37 16 2 4 16 17 40 16 10 1 0.05 5 0 0 15 58 41 0 18 44.8 68 292 -81 16 6 26 15 50 57 16 10 29 15 46 54 16 2 31 15 54 52 0.05 6 0 0 15 43 11 0 18 37.8 67 292 -80 15 50 56 15 35 26 15 55 0 15 31 23 15 47 1 15 39 21 0.05 7 0 0 15 27 20 0 18 30.9 66 292 -79 15 35 6 15 19 35 15 39 10 15 15 31 15 31 11 15 23 30 0.05 8 0 0 15 11 8 0 18 24.0 65 292 -78 15 18 55 15 3 22 15 22 59 14 59 18 15 14 59 15 7 18 0.05 9 0 0 14 54 36 0 18 17.1 64 292 -77 15 2 23 14 46 49 15 6 27 14 42 44 14 58 27 14 50 45 0.05 10 0 0 14 37 43 0 18 10.3 63 292 -76 14 45 30 14 29 55 14 49 35 14 25 50 14 41 34 14 33 51 0.05 11 0 0 14 20 29 0 18 3.5 62 292 -76 14 28 18 14 12 41 14 32 23 14 8 36 14 24 21 14 16 38 0.05 12 0 0 14 2 56 0 17 56.7 61 292 -75 14 10 45 13 55 7 14 14 51 13 51 1 14 6 48 13 59 4 0.05 13 0 0 13 45 2 0 17 50.0 60 292 -74 13 52 52 13 37 12 13 56 58 13 33 6 13 48 55 13 41 10 0.05 14 0 0 13 26 49 0 17 43.3 59 292 -73 13 34 39 13 18 58 13 38 46 13 14 51 13 30 41 13 22 56 0.05 15 0 0 13 8 15 0 17 36.7 58 293 -72 13 16 7 13 0 24 13 20 13 12 56 17 13 12 9 13 4 22 0.05 16 0 0 12 49 23 0 17 30.2 57 293 -71 12 57 15 12 41 31 13 1 22 12 37 24 12 53 16 12 45 29 0.05 17 0 0 12 30 11 0 17 23.7 56 293 -70 12 38 4 12 22 18 12 42 11 12 18 11 12 34 5 12 26 17 0.05 18 0 0 12 10 40 0 17 17.2 55 293 -69 12 18 34 12 2 47 12 22 42 11 58 39 12 14 35 12 6 46 0.05 19 0 0 11 50 51 0 17 10.8 54 293 -68 11 58 45 11 42 57 12 2 53 11 38 48 11 54 45 11 46 56 0.05 20 0 0 11 30 43 0 17 4.5 53 293 -67 11 38 38 11 22 48 11 42 46 11 18 39 11 34 38 11 26 48 0.05 21 0 0 11 10 17 0 16 58.2 52 293 -66 11 18 12 11 2 21 11 22 21 10 58 12 11 14 12 11 6 21 0.05 22 0 0 10 49 33 0 16 52.0 51 293 -65 10 57 29 10 41 36 11 1 38 10 37 27 10 53 28 10 45 37 0.05 23 0 0 10 28 31 0 16 45.9 50 293 -64 10 36 28 10 20 34 10 40 37 10 16 24 10 32 27 10 24 35 0.05 24 0 0 10 7 12 0 16 39.8 49 293 -63 10 15 9 9 59 14 10 19 19 9 55 4 10 11 8 10 3 15 0.05 25 0 0 9 45 36 0 16 33.9 48 294 -62 9 53 34 9 37 38 9 57 44 9 33 27 9 49 32 9 41 39 0.05 26 0 0 9 23 43 0 16 28.0 47 294 -61 9 31 42 9 15 44 9 35 53 9 11 33 9 27 40 9 19 46 0.05 27 0 0 9 1 34 0 16 22.2 46 294 -60 9 9 33 8 53 34 9 13 45 8 49 23 9 5 31 8 57 37 0.05 28 0 0 8 39 9 0 16 16.4 45 294 -59 8 47 9 8 31 9 8 51 21 8 26 57 8 43 6 8 35 11 0.05 29 0 0 8 16 28 0 16 10.8 44 294 -58 8 24 29 8 8 27 8 28 41 8 4 15 8 20 26 8 12 30 0.05 30 0 0 7 53 32 0 16 5.2 43 294 -57 8 1 34 7 45 31 8 5 46 7 41 18 7 57 31 7 49 34 0.05 31 0 0 7 30 22 0 15 59.8 42 294 -56 7 38 24 7 22 19 7 42 36 7 18 7 7 34 20 7 26 23 0.05 32 0 0 7 6 56 0 15 54.4 41 294 -54 7 14 59 6 58 54 7 19 12 6 54 41 7 10 55 7 2 58 0.05 33 0 0 6 43 17 0 15 49.2 40 294 -53 6 51 21 6 35 14 6 55 34 6 31 1 6 47 16 6 39 18 0.06 34 0 0 6 19 25 0 15 44.0 39 294 -52 6 27 28 6 11 21 6 31 42 6 7 7 6 23 24 6 15 25 0.06 35 0 0 5 55 19 0 15 38.9 38 294 -51 6 3 23 5 47 14 6 7 37 5 43 1 5 59 19 5 51 19 0.06 36 0 0 5 31 1 0 15 34.0 36 295 -50 5 39 6 5 22 56 5 43 20 5 18 41 5 35 1 5 27 1 0.06 37 0 0 5 6 30 0 15 29.2 35 295 -49 5 14 36 4 58 25 5 18 50 4 54 10 5 10 30 5 2 30 0.06 38 0 0 4 41 48 0 15 24.4 34 295 -48 4 49 54 4 33 42 4 54 9 4 29 27 4 45 49 4 37 47 0.06 39 0 0 4 16 55 0 15 19.8 33 295 -47 4 25 1 4 8 48 4 29 16 4 4 33 4 20 55 4 12 54 0.06 40 0 0 3 51 51 0 15 15.4 32 295 -46 3 59 58 3 43 44 4 4 13 3 39 29 3 55 52 3 47 50 0.06 41 0 0 3 26 37 0 15 11.0 31 295 -45 3 34 44 3 18 29 3 39 0 3 14 14 3 30 38 3 22 36 0.06 42 0 0 3 1 13 0 15 6.8 30 295 -44 3 9 21 2 53 6 3 13 37 2 48 50 3 5 15 2 57 12 0.06 43 0 0 2 35 41 0 15 2.6 29 295 -43 2 43 49 2 27 33 2 48 5 2 23 17 2 39 43 2 31 39 0.06 44 0 0 2 10 0 0 14 58.7 28 295 -42 2 18 9 2 1 51 2 22 25 1 57 35 2 14 2 2 5 58 0.06 45 0 0 1 44 11 0 14 54.8 27 295 -41 1 52 20 1 36 2 1 56 36 1 31 46 1 48 13 1 40 9 0.06 46 0 0 1 18 15 0 14 51.1 26 295 -40 1 26 24 1 10 6 1 30 41 1 5 49 1 22 17 1 14 13 0.06 47 0 0 0 52 13 0 14 47.5 25 295 -39 1 0 22 0 44 3 1 4 39 0 39 46 0 56 15 0 48 10 0.06 48 0 0 0 26 4 0 14 44.1 24 295 -38 0 34 14 0 17 54 0 38 30 0 13 37 0 30 6 0 22 1 0.06 49 0 0 - 0 0 10 0 14 40.8 23 295 -36 0 8 0 - 0 8 21 0 12 17 - 0 12 37 0 3 52 - 0 4 13 0.06 50 0 0 - 0 26 29 0 14 37.6 22 295 -35 - 0 18 19 - 0 34 40 - 0 14 2 - 0 38 57 - 0 22 27 - 0 30 32 0.06 51 0 0 - 0 52 52 0 14 34.6 20 295 -34 - 0 44 42 - 1 1 3 - 0 40 25 - 1 5 20 - 0 48 50 - 0 56 55 0.06 52 0 0 - 1 19 19 0 14 31.8 19 295 -33 - 1 11 8 - 1 27 30 - 1 6 51 - 1 31 47 - 1 15 16 - 1 23 22 0.05 53 0 0 - 1 45 49 0 14 29.0 18 295 -32 - 1 37 38 - 1 54 0 - 1 33 21 - 1 58 17 - 1 41 46 - 1 49 52 0.05 54 0 0 - 2 12 21 0 14 26.5 17 295 -31 - 2 4 10 - 2 20 32 - 1 59 52 - 2 24 49 - 2 8 18 - 2 16 24 0.05 55 0 0 - 2 38 54 0 14 24.1 16 295 -30 - 2 30 43 - 2 47 5 - 2 26 26 - 2 51 22 - 2 34 51 - 2 42 57 0.05 56 0 0 - 3 5 28 0 14 21.8 15 295 -29 - 2 57 17 - 3 13 40 - 2 53 0 - 3 17 57 - 3 1 25 - 3 9 31 0.05 57 0 0 - 3 32 3 0 14 19.7 14 295 -28 - 3 23 52 - 3 40 14 - 3 19 35 - 3 44 32 - 3 28 0 - 3 36 6 0.05 58 0 0 - 3 58 37 0 14 17.7 13 295 -27 - 3 50 26 - 4 6 49 - 3 46 9 - 4 11 6 - 3 54 34 - 4 2 40 0.05 59 0 0 - 4 25 11 0 14 15.9 12 295 -26 - 4 16 59 - 4 33 22 - 4 12 42 - 4 37 39 - 4 21 7 - 4 29 14 0.05 60 0 0 - 4 51 42 0 14 14.3 11 294 -25 - 4 43 31 - 4 59 53 - 4 39 14 - 5 4 11 - 4 47 39 - 4 55 45 0.05 61 0 0 - 5 18 11 0 14 12.8 10 294 -23 - 5 10 0 - 5 26 22 - 5 5 43 - 5 30 40 - 5 14 8 - 5 22 14 0.05 62 0 0 - 5 44 37 0 14 11.5 9 294 -22 - 5 36 26 - 5 52 48 - 5 32 9 - 5 57 6 - 5 40 34 - 5 48 40 0.05 63 0 0 - 6 11 0 0 14 10.3 7 294 -21 - 6 2 49 - 6 19 11 - 5 58 32 - 6 23 28 - 6 6 57 - 6 15 3 0.05 64 0 0 - 6 37 18 0 14 9.3 6 294 -20 - 6 29 7 - 6 45 29 - 6 24 50 - 6 49 46 - 6 33 15 - 6 41 21 0.04 65 0 0 - 7 3 31 0 14 8.4 5 294 -19 - 6 55 21 - 7 11 41 - 6 51 4 - 7 15 58 - 6 59 28 - 7 7 34 0.04 66 0 0 - 7 29 38 0 14 7.8 4 294 -18 - 7 21 28 - 7 37 49 - 7 17 11 - 7 42 5 - 7 25 36 - 7 33 41 0.04 67 0 0 - 7 55 39 0 14 7.2 3 294 -17 - 7 47 30 - 8 3 49 - 7 43 13 - 8 8 6 - 7 51 37 - 7 59 42 0.03 68 0 0 - 8 21 34 0 14 6.8 2 294 -16 - 8 13 24 - 8 29 43 - 8 9 8 - 8 34 0 - 8 17 31 - 8 25 36 0.01 69 0 0 - 8 47 20 0 14 6.6 1 293 -15 - 8 39 11 - 8 55 30 - 8 34 55 - 8 59 46 - 8 43 18 - 8 51 22 -0.05 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: UCAC4 565-031713 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 43 39.4901 DE: +22 56 06.642 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 43 39.4901 DE: +22 56 06.642 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.400,0.300) * V mag [mag]: 7.4 * B mag [mag]: 9.6 * Diameter [mas]: 3.90 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1778) Alfven asteroid class: approx. diameter [km]: 21 approx. diameter ["]: 0.012 distance from Earth [AU]: 2.45870 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#59 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): 0.020", 0.004", 92.137° remarks: * orbital elements for (1778)Alfven : Mean anomaly = 233.6151761944 deg Arg. of pericenter = 135.4921537545 deg Long. of node = 106.1067590337 deg Inclination = 2.4729238576 deg Eccentricity = 0.1343449417 Semimajor axis = 3.1388558626 AU Perihelion dist = 2.7171664548 AU Mag: H = 11.81, G = 0.15 Epoch of elements : MJD 60324.01495242 TDT (2024 Jan 15.0150) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#592023Apr24,1.93,2024,1,15,0.358859,-0.005944,-0.047593,-8.010478,1.005580,0.001496,-0.000102,0.000001,0.000000 -18.0652,22.9113,176.89,-21.25,False UCAC4 565-031713,6.72763614,22.9351783,9.62,7.44,6.26,3.9,4,,6.75219632,22.9113408,9.36,10.09,0,0,0 1778,Alfven,16.80,27.560,2.4587,0,0,-2.073,3.60,,2.0,0 0,233.4353,2024,1,14,135.4922,106.1068,2.4729,0.13434,3.13886,2.71717,11.81,5.0,0.15 1.262,0.0197,0.0037,92,0.0041,Known errors,1.04,0,-1,-1 20240115_031713,60137.01 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:21 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org