IOTA/IOTA-ES occultation update for (491) Carina / UCAC4 430-054417 event on 2024 Dec 20, 14:53 UT Visible from Summary ------- On 2024 Dec 20 UT, the 99.4346176847013 km diameter asteroid (491) Carina will occult a 11.5 mag star in the constellation Virgo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.60 mag to 15.08 mag (the magnitude of the asteroid) for at most 6.510 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 Dec 20, 14:46 - 2024 Dec 20, 15:00 * geocentric midpoint of event [JD]: 2460665.12074304 * magnitude of target star: 11.52 * magnitude drop [mag]: 3.60 * estimated maximum duration [s]: 6.510 * Moon: 72 % sunlit, 28° distance * Sun: 88° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 101 * 1 sigma uncertainty interval [path widths]: +/- 0.14 * 1 sigma uncertainty interval [seconds]: +/- 2.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.005", 89°) * approx speed of asteroid's shadow [km/s]: 15.3213 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 430-054417 by 491 Carina on 2024 Dec 20 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 2 45 42 14 47 3.5 1 94 -69 2 18 15 3 13 7 2 10 21 3 21 0 .... 140 0 0 2 40 52 14 47 3.7 2 94 -69 2 13 24 3 8 18 2 5 30 3 16 10 0.13 141 0 0 2 35 49 14 47 4.0 3 94 -69 2 8 20 3 3 15 2 0 26 3 11 8 0.14 142 0 0 2 30 33 14 47 4.4 4 94 -69 2 3 4 2 58 0 1 55 10 3 5 53 0.14 143 0 0 2 25 5 14 47 5.0 5 95 -68 1 57 35 2 52 32 1 49 41 3 0 25 0.15 144 0 0 2 19 24 14 47 5.7 6 95 -68 1 51 54 2 46 52 1 43 59 2 54 45 0.15 145 0 0 2 13 30 14 47 6.5 7 95 -68 1 46 0 2 40 59 1 38 5 2 48 52 0.15 146 0 0 2 7 24 14 47 7.5 8 95 -67 1 39 53 2 34 53 1 31 58 2 42 47 0.15 147 0 0 2 1 6 14 47 8.5 9 95 -67 1 33 34 2 28 36 1 25 39 2 36 29 0.15 148 0 0 1 54 35 14 47 9.8 10 95 -66 1 27 3 2 22 5 1 19 7 2 29 59 0.15 149 0 0 1 47 52 14 47 11.1 11 95 -66 1 20 19 2 15 23 1 12 24 2 23 17 0.15 150 0 0 1 40 57 14 47 12.6 12 95 -65 1 13 23 2 8 29 1 5 28 2 16 23 0.15 151 0 0 1 33 50 14 47 14.2 13 95 -65 1 6 16 2 1 22 0 58 20 2 9 17 0.15 152 0 0 1 26 31 14 47 15.9 14 95 -64 0 58 56 1 54 4 0 51 0 2 1 59 0.15 153 0 0 1 19 0 14 47 17.8 15 95 -63 0 51 24 1 46 34 0 43 28 1 54 29 0.15 154 0 0 1 11 18 14 47 19.8 16 95 -63 0 43 41 1 38 52 0 35 45 1 46 47 0.15 155 0 0 1 3 23 14 47 21.9 17 95 -62 0 35 46 1 30 59 0 27 50 1 38 54 0.15 156 0 0 0 55 18 14 47 24.2 18 95 -61 0 27 40 1 22 54 0 19 43 1 30 49 0.15 157 0 0 0 47 1 14 47 26.5 19 95 -61 0 19 22 1 14 37 0 11 25 1 22 33 0.15 158 0 0 0 38 33 14 47 29.1 20 95 -60 0 10 53 1 6 10 0 2 56 1 14 6 0.15 159 0 0 0 29 54 14 47 31.7 21 95 -59 0 2 13 0 57 31 - 0 5 44 1 5 27 0.15 160 0 0 0 21 3 14 47 34.5 22 95 -58 - 0 6 37 0 48 42 - 0 14 35 0 56 38 0.15 161 0 0 0 12 2 14 47 37.4 23 95 -57 - 0 15 39 0 39 42 - 0 23 37 0 47 38 0.15 162 0 0 0 2 51 14 47 40.4 24 95 -57 - 0 24 52 0 30 31 - 0 32 50 0 38 27 0.15 163 0 0 - 0 6 32 14 47 43.5 25 95 -56 - 0 34 15 0 21 9 - 0 42 13 0 29 6 0.15 164 0 0 - 0 16 4 14 47 46.8 26 95 -55 - 0 43 48 0 11 38 - 0 51 46 0 19 35 0.15 165 0 0 - 0 25 47 14 47 50.2 27 95 -54 - 0 53 31 0 1 56 - 1 1 30 0 9 53 0.15 166 0 0 - 0 35 40 14 47 53.7 28 95 -53 - 1 3 25 - 0 7 56 - 1 11 24 0 0 1 0.16 167 0 0 - 0 45 42 14 47 57.3 29 95 -52 - 1 13 28 - 0 17 58 - 1 21 27 - 0 10 1 0.16 168 0 0 - 0 55 54 14 48 1.1 30 94 -52 - 1 23 41 - 0 28 10 - 1 31 40 - 0 20 12 0.16 169 0 0 - 1 6 16 14 48 5.0 31 94 -51 - 1 34 3 - 0 38 31 - 1 42 3 - 0 30 33 0.16 170 0 0 - 1 16 47 14 48 9.0 32 94 -50 - 1 44 35 - 0 49 1 - 1 52 35 - 0 41 3 0.16 171 0 0 - 1 27 27 14 48 13.1 33 94 -49 - 1 55 16 - 0 59 40 - 2 3 16 - 0 51 42 0.16 172 0 0 - 1 38 16 14 48 17.3 34 94 -48 - 2 6 6 - 1 10 29 - 2 14 6 - 1 2 30 0.16 173 0 0 - 1 49 14 14 48 21.7 35 94 -47 - 2 17 4 - 1 21 26 - 2 25 5 - 1 13 27 0.16 174 0 0 - 2 0 20 14 48 26.1 36 94 -46 - 2 28 11 - 1 32 31 - 2 36 12 - 1 24 32 0.16 175 0 0 - 2 11 35 14 48 30.7 38 94 -45 - 2 39 26 - 1 43 45 - 2 47 27 - 1 35 46 0.16 176 0 0 - 2 22 57 14 48 35.4 39 94 -44 - 2 50 50 - 1 55 7 - 2 58 51 - 1 47 8 0.16 177 0 0 - 2 34 28 14 48 40.2 40 93 -43 - 3 2 21 - 2 6 37 - 3 10 22 - 1 58 37 0.16 178 0 0 - 2 46 6 14 48 45.1 41 93 -42 - 3 14 0 - 2 18 15 - 3 22 1 - 2 10 15 0.16 179 0 0 - 2 57 52 14 48 50.1 42 93 -42 - 3 25 46 - 2 29 59 - 3 33 47 - 2 21 59 0.16 -180 0 0 - 3 9 44 14 48 55.3 43 93 -41 - 3 37 39 - 2 41 52 - 3 45 41 - 2 33 51 0.16 -179 0 0 - 3 21 44 14 49 0.5 44 93 -40 - 3 49 40 - 2 53 51 - 3 57 41 - 2 45 50 0.16 -178 0 0 - 3 33 50 14 49 5.8 45 93 -39 - 4 1 47 - 3 5 56 - 4 9 48 - 2 57 56 0.16 -177 0 0 - 3 46 3 14 49 11.2 46 92 -38 - 4 14 0 - 3 18 9 - 4 22 2 - 3 10 8 0.16 -176 0 0 - 3 58 22 14 49 16.8 47 92 -37 - 4 26 20 - 3 30 27 - 4 34 22 - 3 22 26 0.16 -175 0 0 - 4 10 47 14 49 22.4 48 92 -36 - 4 38 45 - 3 42 52 - 4 46 47 - 3 34 51 0.16 -174 0 0 - 4 23 18 14 49 28.1 49 92 -35 - 4 51 16 - 3 55 22 - 4 59 19 - 3 47 21 0.16 -173 0 0 - 4 35 54 14 49 33.9 50 91 -34 - 5 3 53 - 4 7 57 - 5 11 56 - 3 59 56 0.16 -172 0 0 - 4 48 35 14 49 39.8 51 91 -33 - 5 16 35 - 4 20 38 - 5 24 38 - 4 12 37 0.16 -171 0 0 - 5 1 22 14 49 45.8 52 91 -32 - 5 29 21 - 4 33 24 - 5 37 24 - 4 25 23 0.16 -170 0 0 - 5 14 13 14 49 51.9 53 90 -31 - 5 42 13 - 4 46 15 - 5 50 16 - 4 38 13 0.16 -169 0 0 - 5 27 8 14 49 58.0 54 90 -30 - 5 55 8 - 4 59 9 - 6 3 12 - 4 51 8 0.16 -168 0 0 - 5 40 7 14 50 4.3 55 89 -29 - 6 8 8 - 5 12 8 - 6 16 11 - 5 4 6 0.15 -167 0 0 - 5 53 10 14 50 10.6 56 89 -28 - 6 21 12 - 5 25 11 - 6 29 15 - 5 17 9 0.15 -166 0 0 - 6 6 17 14 50 17.0 57 89 -27 - 6 34 19 - 5 38 17 - 6 42 22 - 5 30 15 0.15 -165 0 0 - 6 19 27 14 50 23.4 58 88 -26 - 6 47 29 - 5 51 27 - 6 55 32 - 5 43 25 0.15 -164 0 0 - 6 32 40 14 50 30.0 59 88 -25 - 7 0 42 - 6 4 40 - 7 8 46 - 5 56 37 0.15 -163 0 0 - 6 45 55 14 50 36.6 60 87 -24 - 7 13 58 - 6 17 55 - 7 22 2 - 6 9 53 0.15 -162 0 0 - 6 59 13 14 50 43.3 61 86 -23 - 7 27 16 - 6 31 13 - 7 35 20 - 6 23 10 0.15 -161 0 0 - 7 12 34 14 50 50.0 62 86 -22 - 7 40 36 - 6 44 33 - 7 48 40 - 6 36 30 0.15 -160 0 0 - 7 25 55 14 50 56.8 63 85 -21 - 7 53 59 - 6 57 55 - 8 2 2 - 6 49 52 0.15 -159 0 0 - 7 39 19 14 51 3.7 64 84 -20 - 8 7 22 - 7 11 18 - 8 15 26 - 7 3 15 0.15 -158 0 0 - 7 52 44 14 51 10.6 65 83 -19 - 8 20 47 - 7 24 42 - 8 28 51 - 7 16 40 0.15 -157 0 0 - 8 6 9 14 51 17.6 66 82 -18 - 8 34 13 - 7 38 8 - 8 42 17 - 7 30 5 0.15 -156 0 0 - 8 19 35 14 51 24.6 67 81 -17 - 8 47 39 - 7 51 34 - 8 55 43 - 7 43 31 0.15 -155 0 0 - 8 33 2 14 51 31.7 68 80 -16 - 9 1 6 - 8 5 1 - 9 9 10 - 7 56 58 0.15 -154 0 0 - 8 46 29 14 51 38.8 69 79 -15 - 9 14 32 - 8 18 27 - 9 22 36 - 8 10 25 0.15 -153 0 0 - 8 59 55 14 51 46.0 70 78 -14 - 9 27 59 - 8 31 54 - 9 36 3 - 8 23 51 0.15 -152 0 0 - 9 13 21 14 51 53.2 71 77 -13 - 9 41 24 - 8 45 20 - 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99 0 0 -18 57 49 14 58 2.9 52 288 40 -19 25 22 -18 30 19 -19 33 17 -18 22 25 0.15 - 98 0 0 -19 4 43 14 58 8.5 51 287 41 -19 32 15 -18 37 13 -19 40 9 -18 29 19 0.15 - 97 0 0 -19 11 25 14 58 14.0 50 287 42 -19 38 56 -18 43 56 -19 46 50 -18 36 2 0.15 - 96 0 0 -19 17 55 14 58 19.5 49 286 43 -19 45 25 -18 50 26 -19 53 19 -18 42 33 0.15 - 95 0 0 -19 24 12 14 58 24.9 48 286 44 -19 51 42 -18 56 45 -19 59 36 -18 48 51 0.15 - 94 0 0 -19 30 18 14 58 30.1 47 285 45 -19 57 47 -19 2 51 -20 5 41 -18 54 58 0.15 - 93 0 0 -19 36 11 14 58 35.3 46 285 45 -20 3 40 -19 8 45 -20 11 34 -19 0 52 0.15 - 92 0 0 -19 41 53 14 58 40.4 45 284 46 -20 9 21 -19 14 27 -20 17 14 -19 6 34 0.15 - 91 0 0 -19 47 22 14 58 45.4 44 284 47 -20 14 49 -19 19 56 -20 22 43 -19 12 4 0.15 - 90 0 0 -19 52 38 14 58 50.4 43 283 48 -20 20 5 -19 25 13 -20 27 58 -19 17 21 0.15 - 89 0 0 -19 57 42 14 58 55.2 43 283 49 -20 25 8 -19 30 18 -20 33 2 -19 22 26 0.15 - 88 0 0 -20 2 34 14 58 59.9 42 282 50 -20 29 59 -19 35 10 -20 37 53 -19 27 18 0.15 - 87 0 0 -20 7 13 14 59 4.6 41 282 51 -20 34 38 -19 39 49 -20 42 31 -19 31 57 0.15 - 86 0 0 -20 11 39 14 59 9.1 40 282 52 -20 39 4 -19 44 16 -20 46 57 -19 36 24 0.15 - 85 0 0 -20 15 53 14 59 13.6 39 281 53 -20 43 17 -19 48 30 -20 51 10 -19 40 39 0.15 - 84 0 0 -20 19 54 14 59 17.9 38 281 54 -20 47 18 -19 52 32 -20 55 10 -19 44 40 0.15 - 83 0 0 -20 23 42 14 59 22.2 37 280 55 -20 51 5 -19 56 20 -20 58 58 -19 48 29 0.15 - 82 0 0 -20 27 17 14 59 26.4 36 280 56 -20 54 41 -19 59 56 -21 2 33 -19 52 5 0.15 - 81 0 0 -20 30 40 14 59 30.4 35 279 57 -20 58 3 -20 3 19 -21 5 55 -19 55 28 0.15 - 80 0 0 -20 33 50 14 59 34.4 34 279 58 -21 1 13 -20 6 29 -21 9 5 -19 58 38 0.15 - 79 0 0 -20 36 47 14 59 38.3 33 278 59 -21 4 9 -20 9 27 -21 12 1 -20 1 36 0.15 - 78 0 0 -20 39 31 14 59 42.0 32 278 60 -21 6 53 -20 12 11 -21 14 45 -20 4 21 0.15 - 77 0 0 -20 42 3 14 59 45.7 31 278 61 -21 9 24 -20 14 43 -21 17 16 -20 6 52 0.15 - 76 0 0 -20 44 21 14 59 49.2 30 277 62 -21 11 42 -20 17 2 -21 19 34 -20 9 11 0.15 - 75 0 0 -20 46 27 14 59 52.7 29 277 63 -21 13 48 -20 19 7 -21 21 40 -20 11 17 0.15 - 74 0 0 -20 48 19 14 59 56.1 28 276 63 -21 15 40 -20 21 0 -21 23 32 -20 13 10 0.15 - 73 0 0 -20 49 59 14 59 59.3 27 276 64 -21 17 20 -20 22 40 -21 25 11 -20 14 50 0.15 - 72 0 0 -20 51 26 15 0 2.5 26 276 65 -21 18 46 -20 24 7 -21 26 38 -20 16 17 0.15 - 71 0 0 -20 52 40 15 0 5.5 25 275 66 -21 20 0 -20 25 21 -21 27 52 -20 17 31 0.15 - 70 0 0 -20 53 40 15 0 8.5 25 275 67 -21 21 1 -20 26 22 -21 28 53 -20 18 32 0.15 - 69 0 0 -20 54 28 15 0 11.3 24 274 68 -21 21 49 -20 27 10 -21 29 40 -20 19 20 0.15 - 68 0 0 -20 55 3 15 0 14.0 23 274 69 -21 22 24 -20 27 45 -21 30 15 -20 19 55 0.15 - 67 0 0 -20 55 26 15 0 16.6 22 274 70 -21 22 46 -20 28 7 -21 30 38 -20 20 17 0.15 - 66 0 0 -20 55 35 15 0 19.1 21 273 71 -21 22 55 -20 28 17 -21 30 47 -20 20 26 0.15 - 65 0 0 -20 55 31 15 0 21.6 20 273 72 -21 22 52 -20 28 13 -21 30 43 -20 20 23 0.15 - 64 0 0 -20 55 15 15 0 23.8 19 273 73 -21 22 35 -20 27 57 -21 30 27 -20 20 6 0.16 - 63 0 0 -20 54 46 15 0 26.0 18 272 74 -21 22 6 -20 27 27 -21 29 58 -20 19 37 0.16 - 62 0 0 -20 54 4 15 0 28.1 17 272 75 -21 21 24 -20 26 45 -21 29 16 -20 18 55 0.16 - 61 0 0 -20 53 9 15 0 30.1 16 271 75 -21 20 30 -20 25 50 -21 28 21 -20 18 0 0.16 - 60 0 0 -20 52 1 15 0 31.9 15 271 76 -21 19 22 -20 24 42 -21 27 14 -20 16 52 0.16 - 59 0 0 -20 50 41 15 0 33.7 14 271 77 -21 18 2 -20 23 22 -21 25 54 -20 15 31 0.16 - 58 0 0 -20 49 8 15 0 35.3 13 270 78 -21 16 29 -20 21 49 -21 24 21 -20 13 58 0.16 - 57 0 0 -20 47 22 15 0 36.9 12 270 79 -21 14 44 -20 20 3 -21 22 36 -20 12 12 0.16 - 56 0 0 -20 45 24 15 0 38.3 11 270 80 -21 12 46 -20 18 4 -21 20 38 -20 10 13 0.16 - 55 0 0 -20 43 13 15 0 39.6 10 269 81 -21 10 35 -20 15 53 -21 18 27 -20 8 2 0.16 - 54 0 0 -20 40 50 15 0 40.8 9 269 82 -21 8 12 -20 13 29 -21 16 4 -20 5 38 0.16 - 53 0 0 -20 38 14 15 0 41.8 9 269 82 -21 5 36 -20 10 53 -21 13 29 -20 3 2 0.16 - 52 0 0 -20 35 25 15 0 42.8 8 268 83 -21 2 48 -20 8 4 -21 10 41 -20 0 13 0.16 - 51 0 0 -20 32 25 15 0 43.7 7 268 84 -20 59 48 -20 5 3 -21 7 40 -19 57 12 0.17 - 50 0 0 -20 29 12 15 0 44.4 6 268 85 -20 56 35 -20 1 50 -21 4 28 -19 53 59 0.17 - 49 0 0 -20 25 46 15 0 45.0 5 267 85 -20 53 10 -19 58 24 -21 1 3 -19 50 33 0.17 - 48 0 0 -20 22 9 15 0 45.6 4 267 86 -20 49 33 -19 54 46 -20 57 26 -19 46 55 0.18 - 47 0 0 -20 18 19 15 0 46.0 3 266 86 -20 45 44 -19 50 56 -20 53 37 -19 43 4 0.19 - 46 0 0 -20 14 17 15 0 46.3 2 266 86 -20 41 42 -19 46 54 -20 49 35 -19 39 2 0.21 - 45 0 0 -20 10 3 15 0 46.4 1 266 86 -20 37 29 -19 42 39 -20 45 22 -19 34 47 0.26 - 44 0 0 -20 5 37 15 0 46.5 0 265 86 -20 33 4 .. .. .. -20 40 57 .. .. .. 3.27 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 430-054417 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 11 56 07.8619 DE: -04 09 36.307 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 11 56 07.8632 DE: -04 09 36.315 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.5 * B mag [mag]: 12.4 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (491) Carina asteroid class: approx. diameter [km]: 99 approx. diameter ["]: 0.043 distance from Earth [AU]: 3.17650 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#79 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): 0.016", 0.005", 88.951° remarks: * orbital elements for (491)Carina : Mean anomaly = 108.3964011950 deg Arg. of pericenter = 230.2413887529 deg Long. of node = 175.3206154657 deg Inclination = 18.8691878617 deg Eccentricity = 0.0834027382 Semimajor axis = 3.1910634259 AU Perihelion dist = 2.9249199983 AU Mag: H = 9.07, G = 0.15 Epoch of elements : MJD 60664.62074346 TDT (2024 Dec 20.6207) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#792023Apr27,6.51,2024,12,20,14.897833,-0.036255,-0.145284,8.476524,-1.712336,-0.005547,0.002393,0.000000,0.000000 -133.7988,-4.2985,-44.00,-23.44,False UCAC4 430-054417,11.93551718,-4.1600850,12.44,11.52,11.02,0.1,0,,11.95681816,-4.2985488,0.57,0.24,1,0,1 491,Carina,15.08,99.665,3.1765,0,0,1.569,-4.74,,5.2,0 0,108.2891,2024,12,20,230.2414,175.3206,18.8692,0.08340,3.19106,2.92492,9.07,5.0,0.15 1.144,0.0157,0.0053,89,0.0062,Known errors,1.08,0,-1,-1 20241220_054417,60140.75 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:56 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org