IOTA/IOTA-ES occultation update for (949) Hel / UCAC4 629-017797 event on 2023 Dec 15, 07:22 UT Visible from S USA Summary ------- On 2023 Dec 15 UT, the 64.5 km diameter asteroid (949) Hel will occult a 11.5 mag star in the constellation Auriga for observers along a path across S USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.31 mag to 14.80 mag (the magnitude of the asteroid) for at most 4.270 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: 2023 Dec 15, 07:15 - 2023 Dec 15, 07:29 * geocentric midpoint of event [JD]: 2460293.80749208 * magnitude of target star: 11.54 * magnitude drop [mag]: 3.31 * estimated maximum duration [s]: 4.270 * Moon: 8 % sunlit, 139° distance * Sun: 163° distance * rough path description: S USA The occultation path -------------------- * approximate projected width [km]: 65 * 1 sigma uncertainty interval [path widths]: +/- 0.07 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.001", 85°) * approx speed of asteroid's shadow [km/s]: 15.1057 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 629-017797 by 949 Hel on 2023 Dec 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 158 0 0 -18 39 58 7 29 46.0 0 52 6 -18 17 31 .. .. .. -18 14 34 .. .. .. .... 159 0 0 -17 54 50 7 29 45.9 1 52 5 -17 32 20 -18 17 22 -17 29 23 -18 20 19 -0.07 160 0 0 -17 9 18 7 29 45.6 2 51 3 -16 46 45 -17 31 52 -16 43 48 -17 34 50 0.03 161 0 0 -16 23 23 7 29 45.2 4 51 2 -16 0 48 -16 45 59 -15 57 51 -16 48 57 0.07 162 0 0 -15 37 7 7 29 44.5 5 51 1 -15 14 31 -15 59 45 -15 11 33 -16 2 43 0.09 163 0 0 -14 50 32 7 29 43.6 6 50 0 -14 27 54 -15 13 12 -14 24 56 -15 16 10 0.10 164 0 0 -14 3 40 7 29 42.5 7 50 -1 -13 41 0 -14 26 20 -13 38 2 -14 29 19 0.11 165 0 0 -13 16 31 7 29 41.3 9 50 -3 -12 53 51 -13 39 13 -12 50 53 -13 42 12 0.11 166 0 0 -12 29 10 7 29 39.8 10 50 -4 -12 6 29 -12 51 52 -12 3 30 -12 54 51 0.12 167 0 0 -11 41 36 7 29 38.1 11 50 -5 -11 18 54 -12 4 19 -11 15 56 -12 7 18 0.12 168 0 0 -10 53 52 7 29 36.2 12 49 -6 -10 31 10 -11 16 36 -10 28 12 -11 19 35 0.12 169 0 0 -10 6 1 7 29 34.1 14 49 -7 - 9 43 19 -10 28 44 - 9 40 20 -10 31 43 0.13 170 0 0 - 9 18 3 7 29 31.8 15 49 -9 - 8 55 22 - 9 40 46 - 8 52 23 - 9 43 45 0.13 171 0 0 - 8 30 1 7 29 29.3 16 49 -10 - 8 7 21 - 8 52 44 - 8 4 22 - 8 55 43 0.13 172 0 0 - 7 41 58 7 29 26.6 17 49 -11 - 7 19 18 - 8 4 39 - 7 16 19 - 8 7 38 0.13 173 0 0 - 6 53 54 7 29 23.7 19 48 -12 - 6 31 15 - 7 16 34 - 6 28 17 - 7 19 33 0.13 174 0 0 - 6 5 52 7 29 20.6 20 48 -14 - 5 43 15 - 6 28 31 - 5 40 17 - 6 31 30 0.13 175 0 0 - 5 17 54 7 29 17.3 21 48 -15 - 4 55 18 - 5 40 32 - 4 52 21 - 5 43 30 0.13 176 0 0 - 4 30 2 7 29 13.8 22 48 -16 - 4 7 28 - 4 52 38 - 4 4 31 - 4 55 36 0.13 177 0 0 - 3 42 18 7 29 10.1 24 48 -17 - 3 19 46 - 4 4 51 - 3 16 49 - 4 7 49 0.13 178 0 0 - 2 54 43 7 29 6.3 25 48 -18 - 2 32 14 - 3 17 14 - 2 29 17 - 3 20 11 0.13 179 0 0 - 2 7 20 7 29 2.2 26 48 -20 - 1 44 53 - 2 29 48 - 1 41 56 - 2 32 45 0.13 -180 0 0 - 1 20 10 7 28 58.0 27 48 -21 - 0 57 46 - 1 42 35 - 0 54 49 - 1 45 32 0.13 -179 0 0 - 0 33 15 7 28 53.7 29 48 -22 - 0 10 54 - 0 55 37 - 0 7 58 - 0 58 34 0.14 -178 0 0 0 13 24 7 28 49.1 30 48 -23 0 35 41 - 0 8 56 0 38 37 - 0 11 52 0.14 -177 0 0 0 59 44 7 28 44.4 31 48 -25 1 21 58 0 37 28 1 24 53 0 34 32 0.14 -176 0 0 1 45 43 7 28 39.5 32 48 -26 2 7 54 1 23 31 2 10 49 1 20 36 0.14 -175 0 0 2 31 22 7 28 34.5 34 48 -27 2 53 29 2 9 13 2 56 23 2 6 19 0.14 -174 0 0 3 16 37 7 28 29.4 35 48 -28 3 38 40 2 54 33 3 41 34 2 51 39 0.14 -173 0 0 4 1 28 7 28 24.1 36 48 -29 4 23 27 3 39 28 4 26 20 3 36 34 0.14 -172 0 0 4 45 53 7 28 18.6 37 47 -31 5 7 48 4 23 57 5 10 40 4 21 4 0.14 -171 0 0 5 29 51 7 28 13.1 39 47 -32 5 51 42 5 7 59 5 54 34 5 5 7 0.14 -170 0 0 6 13 21 7 28 7.4 40 47 -33 6 35 7 5 51 34 6 37 58 5 48 42 0.14 -169 0 0 6 56 22 7 28 1.6 41 47 -34 7 18 3 6 34 39 7 20 53 6 31 48 0.14 -168 0 0 7 38 51 7 27 55.7 42 47 -35 8 0 28 7 17 13 8 3 18 7 14 23 0.14 -167 0 0 8 20 50 7 27 49.7 43 47 -36 8 42 22 7 59 17 8 45 11 7 56 27 0.14 -166 0 0 9 2 16 7 27 43.6 45 47 -38 9 23 42 8 40 47 9 26 31 8 37 58 0.14 -165 0 0 9 43 8 7 27 37.4 46 48 -39 10 4 30 9 21 45 10 7 18 9 18 56 0.14 -164 0 0 10 23 26 7 27 31.1 47 48 -40 10 44 43 10 2 8 10 47 31 9 59 20 0.13 -163 0 0 11 3 10 7 27 24.8 48 48 -41 11 24 22 10 41 57 11 27 8 10 39 9 0.13 -162 0 0 11 42 17 7 27 18.4 49 48 -42 12 3 24 11 21 10 12 6 10 11 18 23 0.13 -161 0 0 12 20 49 7 27 11.9 50 48 -43 12 41 50 11 59 46 12 44 36 11 57 0 0.13 -160 0 0 12 58 44 7 27 5.3 51 48 -44 13 19 40 12 37 46 13 22 25 12 35 1 0.13 -159 0 0 13 36 1 7 26 58.7 52 48 -45 13 56 52 13 15 9 13 59 36 13 12 24 0.13 -158 0 0 14 12 40 7 26 52.0 54 47 -47 14 33 26 13 51 53 14 36 10 13 49 10 0.13 -157 0 0 14 48 42 7 26 45.3 55 47 -48 15 9 22 14 28 0 15 12 5 14 25 17 0.13 -156 0 0 15 24 4 7 26 38.6 56 47 -49 15 44 40 15 3 28 15 47 22 15 0 46 0.13 -155 0 0 15 58 48 7 26 31.8 57 47 -50 16 19 18 15 38 17 16 22 0 15 35 35 0.13 -154 0 0 16 32 53 7 26 24.9 58 47 -51 16 53 18 16 12 27 16 55 58 16 9 46 0.13 -153 0 0 17 6 18 7 26 18.1 59 47 -52 17 26 38 16 45 58 17 29 18 16 43 17 0.13 -152 0 0 17 39 4 7 26 11.2 60 47 -53 17 59 18 17 18 49 18 1 58 17 16 9 0.13 -151 0 0 18 11 10 7 26 4.3 61 47 -54 18 31 19 17 51 0 18 33 58 17 48 21 0.13 -150 0 0 18 42 37 7 25 57.4 62 47 -55 19 2 41 18 22 32 19 5 19 18 19 53 0.13 -149 0 0 19 13 23 7 25 50.4 63 47 -56 19 33 22 18 53 23 19 35 59 18 50 46 0.13 -148 0 0 19 43 30 7 25 43.5 64 46 -57 20 3 24 19 23 35 20 6 0 19 20 58 0.13 -147 0 0 20 12 57 7 25 36.5 65 46 -58 20 32 46 19 53 7 20 35 22 19 50 31 0.13 -146 0 0 20 41 44 7 25 29.6 66 46 -59 21 1 28 20 21 59 21 4 3 20 19 24 0.13 -145 0 0 21 9 51 7 25 22.6 67 45 -60 21 29 30 20 50 11 21 32 5 20 47 36 0.13 -144 0 0 21 37 19 7 25 15.7 68 45 -61 21 56 53 21 17 44 21 59 27 21 15 9 0.13 -143 0 0 22 4 7 7 25 8.7 69 45 -62 22 23 36 21 44 37 22 26 9 21 42 3 0.13 -142 0 0 22 30 15 7 25 1.8 70 44 -63 22 49 40 22 10 50 22 52 12 22 8 17 0.13 -141 0 0 22 55 44 7 24 54.8 71 43 -64 23 15 4 22 36 24 23 17 36 22 33 51 0.13 -140 0 0 23 20 34 7 24 47.9 72 43 -65 23 39 50 23 1 18 23 42 21 22 58 46 0.13 -139 0 0 23 44 45 7 24 41.0 73 42 -66 24 3 56 23 25 33 24 6 27 23 23 2 0.13 -138 0 0 24 8 17 7 24 34.1 73 41 -67 24 27 24 23 49 10 24 29 54 23 46 39 0.13 -137 0 0 24 31 11 7 24 27.2 74 40 -67 24 50 13 24 12 8 24 52 43 24 9 38 0.13 -136 0 0 24 53 26 7 24 20.3 75 39 -68 25 12 24 24 34 27 25 14 53 24 31 58 0.13 -135 0 0 25 15 2 7 24 13.5 76 37 -69 25 33 56 24 56 8 25 36 25 24 53 39 0.13 -134 0 0 25 36 1 7 24 6.7 77 35 -70 25 54 51 25 17 11 25 57 19 25 14 42 0.13 -133 0 0 25 56 22 7 23 59.9 78 34 -71 26 15 8 25 37 36 26 17 36 25 35 8 0.13 -132 0 0 26 16 6 7 23 53.1 78 31 -72 26 34 47 25 57 23 26 37 15 25 54 56 0.13 -131 0 0 26 35 12 7 23 46.3 79 29 -73 26 53 50 26 16 33 26 56 16 26 14 6 0.13 -130 0 0 26 53 41 7 23 39.6 80 26 -73 27 12 15 26 35 6 27 14 41 26 32 39 0.13 -129 0 0 27 11 33 7 23 32.9 80 22 -74 27 30 4 26 53 1 27 32 29 26 50 35 0.13 -128 0 0 27 28 48 7 23 26.2 81 18 -75 27 47 16 27 10 20 27 49 41 27 7 55 0.13 -127 0 0 27 45 27 7 23 19.6 81 14 -76 28 3 51 27 27 3 28 6 16 27 24 38 0.13 -126 0 0 28 1 30 7 23 13.0 82 9 -76 28 19 51 27 43 9 28 22 16 27 40 44 0.13 -125 0 0 28 16 58 7 23 6.4 82 3 -77 28 35 15 27 58 39 28 37 39 27 56 15 0.13 -124 0 0 28 31 49 7 22 59.8 82 358 -78 28 50 3 28 13 34 28 52 27 28 11 10 0.13 -123 0 0 28 46 5 7 22 53.3 82 351 -79 29 4 16 28 27 53 29 6 40 28 25 29 0.13 -122 0 0 28 59 46 7 22 46.8 82 345 -79 29 17 54 28 41 36 29 20 17 28 39 13 0.13 -121 0 0 29 12 51 7 22 40.3 82 338 -80 29 30 57 28 54 45 29 33 20 28 52 22 0.13 -120 0 0 29 25 22 7 22 33.9 82 332 -80 29 43 26 29 7 18 29 45 48 29 4 56 0.13 -119 0 0 29 37 19 7 22 27.5 82 327 -81 29 55 20 29 19 17 29 57 41 29 16 55 0.13 -118 0 0 29 48 41 7 22 21.1 82 321 -81 30 6 39 29 30 41 30 9 1 29 28 20 0.13 -117 0 0 29 59 28 7 22 14.7 81 317 -82 30 17 24 29 41 31 30 19 46 29 39 10 0.13 -116 0 0 30 9 42 7 22 8.4 81 312 -82 30 27 36 29 51 47 30 29 57 29 49 26 0.13 -115 0 0 30 19 22 7 22 2.1 80 309 -82 30 37 14 30 1 29 30 39 34 29 59 8 0.13 -114 0 0 30 28 28 7 21 55.9 80 306 -82 30 46 18 30 10 37 30 48 38 30 8 17 0.13 -113 0 0 30 37 1 7 21 49.7 79 303 -82 30 54 49 30 19 12 30 57 9 30 16 51 0.13 -112 0 0 30 45 0 7 21 43.5 78 301 -82 31 2 47 30 27 13 31 5 6 30 24 53 0.13 -111 0 0 30 52 26 7 21 37.3 78 299 -82 31 10 11 30 34 41 31 12 31 30 32 21 0.13 -110 0 0 30 59 19 7 21 31.2 77 297 -82 31 17 3 30 41 35 31 19 22 30 39 15 0.13 -109 0 0 31 5 39 7 21 25.1 76 295 -82 31 23 21 30 47 57 31 25 41 30 45 37 0.13 -108 0 0 31 11 27 7 21 19.0 76 294 -81 31 29 7 30 53 45 31 31 26 30 51 26 0.13 -107 0 0 31 16 41 7 21 13.0 75 293 -81 31 34 21 30 59 1 31 36 40 30 56 41 0.13 -106 0 0 31 21 23 7 21 7.0 74 292 -80 31 39 1 31 3 43 31 41 20 31 1 24 0.13 -105 0 0 31 25 32 7 21 1.0 73 291 -80 31 43 10 31 7 54 31 45 29 31 5 35 0.13 -104 0 0 31 29 9 7 20 55.1 73 291 -79 31 46 46 31 11 31 31 49 4 31 9 12 0.13 -103 0 0 31 32 13 7 20 49.2 72 290 -79 31 49 49 31 14 36 31 52 8 31 12 17 0.13 -102 0 0 31 34 45 7 20 43.3 71 290 -78 31 52 21 31 17 9 31 54 39 31 14 50 0.13 -101 0 0 31 36 45 7 20 37.5 70 289 -77 31 54 20 31 19 9 31 56 38 31 16 50 0.13 -100 0 0 31 38 12 7 20 31.7 70 289 -77 31 55 47 31 20 36 31 58 5 31 18 18 0.13 - 99 0 0 31 39 7 7 20 25.9 69 289 -76 31 56 42 31 21 31 31 59 0 31 19 13 0.13 - 98 0 0 31 39 30 7 20 20.1 68 288 -75 31 57 4 31 21 54 31 59 23 31 19 35 0.13 - 97 0 0 31 39 20 7 20 14.4 67 288 -75 31 56 55 31 21 44 31 59 13 31 19 26 0.13 - 96 0 0 31 38 38 7 20 8.7 67 288 -74 31 56 13 31 21 2 31 58 31 31 18 44 0.13 - 95 0 0 31 37 24 7 20 3.1 66 288 -73 31 54 59 31 19 48 31 57 18 31 17 29 0.13 - 94 0 0 31 35 37 7 19 57.4 65 288 -72 31 53 13 31 18 1 31 55 31 31 15 42 0.13 - 93 0 0 31 33 18 7 19 51.8 64 288 -72 31 50 54 31 15 41 31 53 13 31 13 22 0.13 - 92 0 0 31 30 27 7 19 46.3 63 288 -71 31 48 3 31 12 49 31 50 22 31 10 30 0.13 - 91 0 0 31 27 2 7 19 40.7 63 288 -70 31 44 40 31 9 24 31 46 59 31 7 5 0.13 - 90 0 0 31 23 6 7 19 35.2 62 289 -69 31 40 44 31 5 26 31 43 3 31 3 7 0.13 - 89 0 0 31 18 36 7 19 29.8 61 289 -69 31 36 16 31 0 56 31 38 35 30 58 37 0.13 - 88 0 0 31 13 34 7 19 24.3 60 289 -68 31 31 14 30 55 52 31 33 34 30 53 33 0.13 - 87 0 0 31 7 59 7 19 18.9 59 289 -67 31 25 40 30 50 16 31 28 0 30 47 56 0.13 - 86 0 0 31 1 50 7 19 13.5 58 289 -66 31 19 33 30 44 6 31 21 53 30 41 46 0.13 - 85 0 0 30 55 8 7 19 8.2 58 289 -66 31 12 53 30 37 23 31 15 13 30 35 3 0.13 - 84 0 0 30 47 53 7 19 2.9 57 290 -65 31 5 40 30 30 6 31 8 0 30 27 46 0.13 - 83 0 0 30 40 5 7 18 57.6 56 290 -64 30 57 53 30 22 16 31 0 13 30 19 56 0.13 - 82 0 0 30 31 43 7 18 52.4 55 290 -63 30 49 32 30 13 52 30 51 53 30 11 31 0.13 - 81 0 0 30 22 46 7 18 47.2 54 290 -62 30 40 38 30 4 54 30 42 59 30 2 33 0.13 - 80 0 0 30 13 16 7 18 42.0 53 291 -62 30 31 10 29 55 22 30 33 31 29 53 0 0.13 - 79 0 0 30 3 12 7 18 36.9 53 291 -61 30 21 8 29 45 15 30 23 29 29 42 53 0.13 - 78 0 0 29 52 33 7 18 31.8 52 291 -60 30 10 31 29 34 33 30 12 52 29 32 12 0.13 - 77 0 0 29 41 19 7 18 26.8 51 292 -59 29 59 20 29 23 17 30 1 41 29 20 55 0.13 - 76 0 0 29 29 30 7 18 21.7 50 292 -58 29 47 34 29 11 26 29 49 56 29 9 4 0.13 - 75 0 0 29 17 6 7 18 16.8 49 292 -57 29 35 12 28 59 0 29 37 35 28 56 37 0.13 - 74 0 0 29 4 7 7 18 11.8 48 293 -57 29 22 16 28 45 58 29 24 39 28 43 34 0.13 - 73 0 0 28 50 32 7 18 6.9 47 293 -56 29 8 44 28 32 20 29 11 7 28 29 56 0.13 - 72 0 0 28 36 21 7 18 2.1 47 293 -55 28 54 36 28 18 6 28 57 0 28 15 42 0.13 - 71 0 0 28 21 34 7 17 57.3 46 294 -54 28 39 52 28 3 16 28 42 16 28 0 51 0.13 - 70 0 0 28 6 11 7 17 52.5 45 294 -53 28 24 32 27 47 49 28 26 56 27 45 24 0.13 - 69 0 0 27 50 11 7 17 47.8 44 294 -52 28 8 35 27 31 45 28 11 0 27 29 20 0.13 - 68 0 0 27 33 34 7 17 43.2 43 295 -51 27 52 1 27 15 5 27 54 27 27 12 39 0.13 - 67 0 0 27 16 19 7 17 38.6 42 295 -50 27 34 51 26 57 47 27 37 16 26 55 21 0.13 - 66 0 0 26 58 27 7 17 34.0 41 295 -50 27 17 2 26 39 51 27 19 29 26 37 24 0.13 - 65 0 0 26 39 57 7 17 29.5 40 296 -49 26 58 36 26 21 17 27 1 3 26 18 50 0.13 - 64 0 0 26 20 49 7 17 25.1 39 296 -48 26 39 32 26 2 5 26 41 59 25 59 38 0.13 - 63 0 0 26 1 3 7 17 20.7 38 296 -47 26 19 50 25 42 15 26 22 17 25 39 47 0.13 - 62 0 0 25 40 37 7 17 16.4 37 297 -46 25 59 28 25 21 45 26 1 57 25 19 17 0.13 - 61 0 0 25 19 33 7 17 12.1 36 297 -45 25 38 28 25 0 37 25 40 57 24 58 8 0.13 - 60 0 0 24 57 50 7 17 7.9 35 298 -44 25 16 49 24 38 49 25 19 19 24 36 19 0.13 - 59 0 0 24 35 27 7 17 3.8 35 298 -43 24 54 31 24 16 21 24 57 1 24 13 51 0.13 - 58 0 0 24 12 24 7 16 59.7 34 298 -42 24 31 32 23 53 14 24 34 3 23 50 43 0.14 - 57 0 0 23 48 41 7 16 55.7 33 299 -41 24 7 54 23 29 26 24 10 25 23 26 55 0.14 - 56 0 0 23 24 17 7 16 51.8 32 299 -40 23 43 35 23 4 58 23 46 7 23 2 26 0.14 - 55 0 0 22 59 13 7 16 48.0 31 299 -39 23 18 36 22 39 49 23 21 8 22 37 16 0.14 - 54 0 0 22 33 28 7 16 44.3 30 300 -38 22 52 56 22 14 0 22 55 29 22 11 26 0.14 - 53 0 0 22 7 2 7 16 40.6 29 300 -37 22 26 35 21 47 29 22 29 9 21 44 54 0.14 - 52 0 0 21 39 55 7 16 37.0 28 300 -36 21 59 33 21 20 16 22 2 8 21 17 42 0.14 - 51 0 0 21 12 7 7 16 33.6 27 301 -35 21 31 50 20 52 23 21 34 25 20 49 47 0.14 - 50 0 0 20 43 36 7 16 30.2 26 301 -34 21 3 25 20 23 47 21 6 0 20 21 11 0.14 - 49 0 0 20 14 24 7 16 26.9 24 301 -33 20 34 18 19 54 30 20 36 55 19 51 53 0.14 - 48 0 0 19 44 31 7 16 23.7 23 302 -32 20 4 30 19 24 31 20 7 7 19 21 53 0.14 - 47 0 0 19 13 55 7 16 20.6 22 302 -31 19 33 59 18 53 50 19 36 37 18 51 11 0.14 - 46 0 0 18 42 37 7 16 17.7 21 302 -30 19 2 47 18 22 26 19 5 26 18 19 47 0.14 - 45 0 0 18 10 37 7 16 14.8 20 302 -29 18 30 53 17 50 21 18 33 32 17 47 41 0.14 - 44 0 0 17 37 56 7 16 12.1 19 303 -28 17 58 17 17 17 34 18 0 57 17 14 53 0.14 - 43 0 0 17 4 32 7 16 9.5 18 303 -27 17 24 58 16 44 4 17 27 39 16 41 23 0.14 - 42 0 0 16 30 26 7 16 7.1 17 303 -26 16 50 58 16 9 53 16 53 40 16 7 11 0.14 - 41 0 0 15 55 39 7 16 4.7 16 303 -25 16 16 17 15 35 0 16 18 59 15 32 17 0.14 - 40 0 0 15 20 10 7 16 2.5 15 304 -24 15 40 53 14 59 25 15 43 37 14 56 42 0.14 - 39 0 0 14 44 0 7 16 0.5 14 304 -23 15 4 49 14 23 9 15 7 33 14 20 25 0.14 - 38 0 0 14 7 8 7 15 58.5 12 304 -22 14 28 3 13 46 12 14 30 48 13 43 27 0.14 - 37 0 0 13 29 36 7 15 56.8 11 304 -20 13 50 37 13 8 34 13 53 22 13 5 49 0.14 - 36 0 0 12 51 24 7 15 55.2 10 305 -19 13 12 30 12 30 16 13 15 16 12 27 30 0.14 - 35 0 0 12 12 32 7 15 53.7 9 305 -18 12 33 44 11 51 18 12 36 31 11 48 31 0.13 - 34 0 0 11 33 0 7 15 52.5 8 305 -17 11 54 18 11 11 41 11 57 5 11 8 53 0.13 - 33 0 0 10 52 50 7 15 51.4 7 305 -16 11 14 13 10 31 25 11 17 2 10 28 37 0.13 - 32 0 0 10 12 2 7 15 50.4 5 305 -15 10 33 31 9 50 32 10 36 20 9 47 42 0.13 - 31 0 0 9 30 36 7 15 49.7 4 306 -14 9 52 10 9 9 0 9 55 0 9 6 10 0.12 - 30 0 0 8 48 34 7 15 49.1 3 306 -12 9 10 14 8 26 53 9 13 4 8 24 2 0.12 - 29 0 0 8 5 56 7 15 48.7 2 306 -11 8 27 41 7 44 10 8 30 32 7 41 18 0.10 - 28 0 0 7 22 44 7 15 48.5 1 306 -10 7 44 34 7 0 52 7 47 26 6 58 0 0.00 Uncertainty in time = +/- 1 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: UCAC4 629-017797 * constellation : Auriga * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 38 35.8749 DE: +35 46 26.819 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 38 35.8749 DE: +35 46 26.819 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (949) Hel asteroid class: approx. diameter [km]: 65 approx. diameter ["]: 0.037 distance from Earth [AU]: 2.40790 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#62 date of fit: 2023 Oct 09 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): 0.013", 0.001", 84.834° remarks: * orbital elements for (949)Hel : Mean anomaly = 241.3462693724 deg Arg. of pericenter = 251.2385310263 deg Long. of node = 320.6369783244 deg Inclination = 10.6356946064 deg Eccentricity = 0.1995527546 Semimajor axis = 2.9974407061 AU Perihelion dist = 2.3992931563 AU Mag: H = 9.84, G = 0.15 Epoch of elements : MJD 60293.30736111 TDT (2023 Dec 15.3074) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#622023Oct09,4.27,2023,12,15,7.379810,0.034570,-0.121510,-8.200546,-2.333503,0.001218,-0.001243,0.000002,0.000000 -124.3443,35.8229,68.03,-23.26,False UCAC4 629-017797,4.64329860,35.7741165,0.00,11.54,0.00,0.0,0,,4.67006038,35.8228817,3.31,0.00,0,0,0 949,Hel,14.80,64.500,2.4079,0,0,-2.461,-8.52,,2.8,0 0,241.2879,2023,12,15,251.2385,320.6370,10.6357,0.19955,2.99744,2.39929,9.85,5.0,0.15 1.066,0.0127,0.0006,85,0.0127,Known errors,-1.00,0,-1,-1 20231215_017797,60232.89 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 21:18 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org