IOTA/IOTA-ES occultation update for (1712) Angola / UCAC4-535-007711 event on 2022 Dec 07, 08:51 UT Visible from USA Summary ------- On 2022 Dec 07 UT, the 67 km diameter asteroid (1712) Angola will occult a 12.4 mag star in the constellation Taurus for observers along a path across USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.05 mag to 15.38 mag (the magnitude of the asteroid) for at most 4.090 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: 2022 Dec 07, 08:45 - 2022 Dec 07, 08:58 * geocentric midpoint of event [JD]: 2459920.86942821 * magnitude of target star: 12.40 * magnitude drop [mag]: 3.05 * estimated maximum duration [s]: 4.090 * Moon: 99 % sunlit, 7° distance * Sun: 166° distance * rough path description: USA The occultation path -------------------- * approximate projected width [km]: 67 * 1 sigma uncertainty interval [path widths]: +/- 0.30 * 1 sigma uncertainty interval [seconds]: +/- 1.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.003", 99°) * approx speed of asteroid's shadow [km/s]: 16.3646 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4-535-007711 by 1712 Angola on 2022 Dec 7 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 127 0 0 -20 33 51 8 58 26.9 1 72 13 -20 14 39 -20 53 2 -20 3 8 -21 4 32 .... 128 0 0 -20 14 47 8 58 26.7 2 71 12 -19 55 32 -20 34 1 -19 43 59 -20 45 33 -0.12 129 0 0 -19 55 13 8 58 26.5 3 71 11 -19 35 55 -20 14 30 -19 24 20 -20 26 3 -0.11 130 0 0 -19 35 8 8 58 26.1 4 71 10 -19 15 47 -19 54 28 -19 4 11 -20 6 4 -0.10 131 0 0 -19 14 33 8 58 25.6 5 70 9 -18 55 10 -19 33 56 -18 43 31 -19 45 34 -0.09 132 0 0 -18 53 29 8 58 25.0 6 70 8 -18 34 2 -19 12 55 -18 22 22 -19 24 34 -0.09 133 0 0 -18 31 54 8 58 24.3 7 70 7 -18 12 24 -18 51 23 -18 0 42 -19 3 4 -0.09 134 0 0 -18 9 50 8 58 23.4 8 69 6 -17 50 17 -18 29 22 -17 38 33 -18 41 5 -0.09 135 0 0 -17 47 16 8 58 22.5 9 69 5 -17 27 40 -18 6 51 -17 15 54 -18 18 36 -0.09 136 0 0 -17 24 12 8 58 21.4 10 69 4 -17 4 33 -17 43 51 -16 52 46 -17 55 38 -0.09 137 0 0 -17 0 40 8 58 20.1 11 68 3 -16 40 58 -17 20 22 -16 29 8 -17 32 10 -0.09 138 0 0 -16 36 39 8 58 18.8 12 68 2 -16 16 53 -16 56 23 -16 5 2 -17 8 14 -0.08 139 0 0 -16 12 8 8 58 17.3 13 68 1 -15 52 20 -16 31 56 -15 40 27 -16 43 49 -0.08 140 0 0 -15 47 10 8 58 15.6 14 68 0 -15 27 18 -16 7 1 -15 15 23 -16 18 55 -0.08 141 0 0 -15 21 43 8 58 13.9 15 67 -1 -15 1 48 -15 41 37 -14 49 51 -15 53 33 -0.08 142 0 0 -14 55 48 8 58 12.0 16 67 -2 -14 35 50 -15 15 45 -14 23 51 -15 27 43 -0.08 143 0 0 -14 29 26 8 58 9.9 17 67 -3 -14 9 25 -14 49 26 -13 57 24 -15 1 26 -0.08 144 0 0 -14 2 36 8 58 7.8 18 67 -4 -13 42 32 -14 22 40 -13 30 29 -14 34 42 -0.08 145 0 0 -13 35 20 8 58 5.5 19 66 -5 -13 15 13 -13 55 27 -13 3 8 -14 7 30 -0.08 146 0 0 -13 7 37 8 58 3.0 20 66 -6 -12 47 27 -13 27 47 -12 35 20 -13 39 53 -0.08 147 0 0 -12 39 29 8 58 0.5 21 66 -7 -12 19 15 -12 59 42 -12 7 7 -13 11 49 -0.08 148 0 0 -12 10 54 8 57 57.7 22 66 -8 -11 50 38 -12 31 10 -11 38 28 -12 43 19 -0.08 149 0 0 -11 41 55 8 57 54.9 23 66 -10 -11 21 36 -12 2 14 -11 9 24 -12 14 25 -0.08 150 0 0 -11 12 32 8 57 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54.2 52 65 -39 3 2 13 2 19 53 3 14 55 2 7 11 -0.08 176 0 0 3 16 39 8 55 48.0 54 66 -40 3 37 50 2 55 29 3 50 33 2 42 47 -0.08 177 0 0 3 52 17 8 55 41.7 55 66 -41 4 13 28 3 31 6 4 26 11 3 18 24 -0.08 178 0 0 4 27 56 8 55 35.3 56 66 -42 4 49 7 4 6 45 5 1 50 3 54 3 -0.08 179 0 0 5 3 34 8 55 28.9 57 66 -43 5 24 46 4 42 23 5 37 29 4 29 41 -0.08 -180 0 0 5 39 10 8 55 22.3 58 67 -44 6 0 22 5 17 59 6 13 6 5 5 17 -0.08 -179 0 0 6 14 44 8 55 15.7 59 67 -45 6 35 56 5 53 33 6 48 39 5 40 51 -0.08 -178 0 0 6 50 15 8 55 9.1 60 67 -47 7 11 26 6 29 4 7 24 10 6 16 22 -0.08 -177 0 0 7 25 41 8 55 2.3 61 68 -48 7 46 52 7 4 30 7 59 35 6 51 49 -0.08 -176 0 0 8 1 1 8 54 55.5 62 68 -49 8 22 12 7 39 51 8 34 54 7 27 10 -0.08 -175 0 0 8 36 15 8 54 48.7 64 69 -50 8 57 25 8 15 5 9 10 7 8 2 24 -0.08 -174 0 0 9 11 21 8 54 41.8 65 69 -51 9 32 30 8 50 12 9 45 12 8 37 32 -0.08 -173 0 0 9 46 18 8 54 34.9 66 70 -52 10 7 27 9 25 10 10 20 8 9 12 30 -0.08 -172 0 0 10 21 6 8 54 27.9 67 71 -53 10 42 14 9 59 59 10 54 54 9 47 20 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18 5 36 16 59 13 -0.09 -158 0 0 18 3 30 8 52 48.1 81 95 -68 18 24 12 17 42 48 18 36 38 17 30 23 -0.09 -157 0 0 18 34 15 8 52 41.0 82 100 -69 18 54 55 18 13 35 19 7 19 18 1 12 -0.09 -156 0 0 19 4 38 8 52 33.9 83 105 -70 19 25 16 18 44 1 19 37 39 18 31 39 -0.09 -155 0 0 19 34 39 8 52 26.8 83 112 -71 19 55 14 19 14 4 20 7 35 19 1 44 -0.09 -154 0 0 20 4 17 8 52 19.8 84 120 -72 20 24 50 19 43 45 20 37 10 19 31 26 -0.09 -153 0 0 20 33 32 8 52 12.8 84 129 -73 20 54 2 20 13 3 21 6 20 20 0 46 -0.09 -152 0 0 21 2 23 8 52 5.8 85 141 -74 21 22 51 20 41 57 21 35 7 20 29 41 -0.09 -151 0 0 21 30 51 8 51 58.8 85 152 -75 21 51 15 21 10 27 22 3 30 20 58 13 -0.09 -150 0 0 21 58 53 8 51 51.9 85 164 -76 22 19 15 21 38 32 22 31 28 21 26 20 -0.09 -149 0 0 22 26 31 8 51 45.1 84 175 -77 22 46 50 22 6 13 22 59 2 21 54 3 -0.09 -148 0 0 22 53 44 8 51 38.2 84 185 -78 23 14 0 22 33 29 23 26 10 22 21 20 -0.09 -147 0 0 23 20 31 8 51 31.5 83 193 -79 23 40 44 23 0 19 23 52 52 22 48 12 -0.09 -146 0 0 23 46 53 8 51 24.7 83 199 -80 24 7 3 23 26 43 24 19 9 23 14 38 -0.09 -145 0 0 24 12 48 8 51 18.1 82 205 -80 24 32 55 23 52 42 24 44 59 23 40 38 -0.09 -144 0 0 24 38 17 8 51 11.4 81 209 -81 24 58 21 24 18 14 25 10 24 24 6 12 -0.09 -143 0 0 25 3 20 8 51 4.8 80 213 -82 25 23 21 24 43 19 25 35 21 24 31 20 -0.09 -142 0 0 25 27 55 8 50 58.3 80 216 -83 25 47 53 25 7 58 25 59 52 24 56 0 -0.09 -141 0 0 25 52 4 8 50 51.8 79 219 -83 26 11 59 25 32 10 26 23 56 25 20 14 -0.09 -140 0 0 26 15 46 8 50 45.4 78 222 -84 26 35 37 25 55 54 26 47 33 25 44 0 -0.09 -139 0 0 26 39 0 8 50 39.1 77 224 -84 26 58 49 26 19 12 27 10 42 26 7 20 -0.09 -138 0 0 27 1 47 8 50 32.8 76 226 -84 27 21 33 26 42 2 27 33 24 26 30 11 -0.09 -137 0 0 27 24 7 8 50 26.5 75 228 -85 27 43 49 27 4 25 27 55 39 26 52 36 -0.09 -136 0 0 27 45 59 8 50 20.4 74 229 -84 28 5 38 27 26 20 28 17 26 27 14 33 -0.09 -135 0 0 28 7 23 8 50 14.2 73 231 -84 28 27 0 27 47 47 28 38 46 27 36 2 -0.09 -134 0 0 28 28 20 8 50 8.2 73 232 -84 28 47 53 28 8 47 28 59 38 27 57 3 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35 8 47 53.7 50 254 -64 35 10 5 34 33 6 35 21 11 34 22 1 -0.09 -107 0 0 35 0 15 8 47 49.4 50 254 -63 35 18 43 34 41 47 35 29 47 34 30 43 -0.09 -106 0 0 35 8 28 8 47 45.2 49 255 -62 35 26 54 34 50 2 35 37 58 34 38 59 -0.09 -105 0 0 35 16 15 8 47 41.0 48 256 -62 35 34 39 34 57 50 35 45 42 34 46 48 -0.09 -104 0 0 35 23 35 8 47 36.9 47 256 -61 35 41 58 35 5 12 35 53 0 34 54 11 -0.09 -103 0 0 35 30 29 8 47 32.9 46 257 -60 35 48 51 35 12 8 35 59 53 35 1 7 -0.09 -102 0 0 35 36 58 8 47 28.9 46 257 -59 35 55 18 35 18 37 36 6 19 35 7 38 -0.09 -101 0 0 35 43 0 8 47 25.0 45 258 -58 36 1 19 35 24 41 36 12 19 35 13 42 -0.09 -100 0 0 35 48 36 8 47 21.2 44 259 -58 36 6 55 35 30 18 36 17 54 35 19 20 -0.09 - 99 0 0 35 53 46 8 47 17.4 43 259 -57 36 12 4 35 35 30 36 23 2 35 24 32 -0.09 - 98 0 0 35 58 31 8 47 13.7 42 260 -56 36 16 47 35 40 15 36 27 45 35 29 18 -0.09 - 97 0 0 36 2 49 8 47 10.0 42 261 -55 36 21 5 35 44 34 36 32 2 35 33 38 -0.09 - 96 0 0 36 6 42 8 47 6.4 41 261 -55 36 24 57 35 48 28 36 35 54 35 37 31 -0.09 - 95 0 0 36 10 9 8 47 2.9 40 262 -54 36 28 23 35 51 55 36 39 19 35 41 0 -0.09 - 94 0 0 36 13 10 8 46 59.4 39 263 -53 36 31 23 35 54 57 36 42 20 35 44 2 -0.09 - 93 0 0 36 15 45 8 46 56.0 38 263 -52 36 33 58 35 57 33 36 44 54 35 46 38 -0.09 - 92 0 0 36 17 55 8 46 52.6 38 264 -51 36 36 7 35 59 43 36 47 3 35 48 48 -0.09 - 91 0 0 36 19 39 8 46 49.3 37 264 -51 36 37 51 36 1 27 36 48 46 35 50 33 -0.09 - 90 0 0 36 20 57 8 46 46.1 36 265 -50 36 39 9 36 2 46 36 50 4 35 51 51 -0.09 - 89 0 0 36 21 50 8 46 42.9 35 266 -49 36 40 1 36 3 38 36 50 56 35 52 44 -0.09 - 88 0 0 36 22 16 8 46 39.8 34 266 -48 36 40 28 36 4 5 36 51 23 35 53 11 -0.09 - 87 0 0 36 22 17 8 46 36.8 34 267 -47 36 40 29 36 4 6 36 51 24 35 53 12 -0.09 - 86 0 0 36 21 52 8 46 33.8 33 268 -47 36 40 4 36 3 41 36 50 59 35 52 47 -0.09 - 85 0 0 36 21 2 8 46 30.8 32 268 -46 36 39 13 36 2 50 36 50 9 35 51 56 -0.09 - 84 0 0 36 19 45 8 46 28.0 31 269 -45 36 37 57 36 1 34 36 48 53 35 50 39 -0.09 - 83 0 0 36 18 3 8 46 25.2 31 269 -44 36 36 15 35 59 51 36 47 11 35 48 56 -0.09 - 82 0 0 36 15 55 8 46 22.4 30 270 -43 36 34 7 35 57 42 36 45 3 35 46 48 -0.09 - 81 0 0 36 13 21 8 46 19.8 29 271 -43 36 31 34 35 55 8 36 42 30 35 44 13 -0.09 - 80 0 0 36 10 20 8 46 17.1 28 271 -42 36 28 34 35 52 7 36 39 30 35 41 11 -0.09 - 79 0 0 36 6 54 8 46 14.6 27 272 -41 36 25 9 35 48 40 36 36 5 35 37 44 -0.09 - 78 0 0 36 3 2 8 46 12.1 27 272 -40 36 21 17 35 44 47 36 32 14 35 33 50 -0.09 - 77 0 0 35 58 43 8 46 9.7 26 273 -39 36 16 59 35 40 27 36 27 57 35 29 30 -0.09 - 76 0 0 35 53 58 8 46 7.3 25 274 -39 36 12 15 35 35 42 36 23 13 35 24 44 -0.09 - 75 0 0 35 48 47 8 46 5.0 24 274 -38 36 7 5 35 30 29 36 18 4 35 19 31 -0.09 - 74 0 0 35 43 9 8 46 2.8 23 275 -37 36 1 28 35 24 50 36 12 28 35 13 52 -0.09 - 73 0 0 35 37 5 8 46 0.7 22 275 -36 35 55 25 35 18 45 36 6 25 35 7 45 -0.09 - 72 0 0 35 30 34 8 45 58.6 22 276 -35 35 48 55 35 12 13 35 59 56 35 1 12 -0.09 - 71 0 0 35 23 36 8 45 56.5 21 276 -35 35 41 59 35 5 14 35 53 1 34 54 12 -0.09 - 70 0 0 35 16 11 8 45 54.6 20 277 -34 35 34 36 34 57 48 35 45 39 34 46 46 -0.09 - 69 0 0 35 8 20 8 45 52.7 19 278 -33 35 26 46 34 49 54 35 37 50 34 38 52 -0.09 - 68 0 0 35 0 1 8 45 50.9 18 278 -32 35 18 29 34 41 34 35 29 33 34 30 30 -0.09 - 67 0 0 34 51 15 8 45 49.1 18 279 -31 35 9 45 34 32 47 35 20 50 34 21 42 -0.09 - 66 0 0 34 42 2 8 45 47.4 17 279 -30 35 0 33 34 23 32 35 11 40 34 12 26 -0.09 - 65 0 0 34 32 22 8 45 45.8 16 280 -30 34 50 54 34 13 49 35 2 2 34 2 42 -0.09 - 64 0 0 34 22 13 8 45 44.3 15 280 -29 34 40 48 34 3 39 34 51 57 33 52 31 -0.09 - 63 0 0 34 11 37 8 45 42.9 14 281 -28 34 30 14 33 53 1 34 41 24 33 41 52 -0.09 - 62 0 0 34 0 34 8 45 41.5 13 282 -27 34 19 13 33 41 55 34 30 24 33 30 44 -0.09 - 61 0 0 33 49 2 8 45 40.2 13 282 -26 34 7 43 33 30 21 34 18 56 33 19 9 -0.09 - 60 0 0 33 37 2 8 45 39.0 12 283 -25 33 55 45 33 18 19 34 6 59 33 7 6 -0.09 - 59 0 0 33 24 34 8 45 37.8 11 283 -25 33 43 19 33 5 48 33 54 35 32 54 34 -0.09 - 58 0 0 33 11 37 8 45 36.8 10 284 -24 33 30 25 32 52 49 33 41 42 32 41 33 -0.09 - 57 0 0 32 58 12 8 45 35.8 9 284 -23 33 17 2 32 39 22 33 28 21 32 28 4 -0.09 - 56 0 0 32 44 18 8 45 34.9 8 285 -22 33 3 11 32 25 25 33 14 31 32 14 6 -0.10 - 55 0 0 32 29 55 8 45 34.1 7 285 -21 32 48 51 32 11 0 33 0 13 31 59 39 -0.10 - 54 0 0 32 15 4 8 45 33.3 6 286 -20 32 34 2 31 56 6 32 45 25 31 44 43 -0.10 - 53 0 0 31 59 43 8 45 32.7 6 286 -19 32 18 44 31 40 42 32 30 9 31 29 18 -0.10 - 52 0 0 31 43 53 8 45 32.1 5 287 -18 32 2 57 31 24 49 32 14 23 31 13 23 -0.11 - 51 0 0 31 27 33 8 45 31.7 4 288 -18 31 46 40 31 8 27 31 58 8 30 56 59 -0.12 - 50 0 0 31 10 44 8 45 31.3 3 288 -17 31 29 54 30 51 35 31 41 24 30 40 6 -0.13 - 49 0 0 30 53 26 8 45 31.1 2 289 -16 31 12 39 30 34 14 31 24 11 30 22 43 -0.15 - 48 0 0 30 35 38 8 45 30.9 1 289 -15 30 54 54 30 16 22 31 6 27 30 4 50 -0.21 - 47 0 0 30 17 20 8 45 30.8 0 290 -14 30 36 39 29 58 1 30 48 14 29 46 27 -0.93 Uncertainty in time = +/- 2 secs Prediction of 2022 Dec 1.1 Data for the target star ------------------------ * name: UCAC4-535-007711 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 00 43.9381 DE: +16 53 01.510 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 00 43.9380 DE: +16 53 01.510 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1712) Angola asteroid class: approx. diameter [km]: 67 approx. diameter ["]: 0.034 distance from Earth [AU]: 2.67770 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#64 date of fit: 2022 Nov 22 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): 0.017", 0.003", 98.856° remarks: * orbital elements for (1712)Angola : Mean anomaly = 167.1571064509 deg Arg. of pericenter = 17.6547722823 deg Long. of node = 237.4533097747 deg Inclination = 19.3952743684 deg Eccentricity = 0.1546681488 Semimajor axis = 3.1620507888 AU Perihelion dist = 2.6729822469 AU Mag: H = 10.08, G = 0.15 Epoch of elements : MJD 59920.36923611 TDT (2022 Dec 07.3692) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#642022Nov22,4.09,2022,12,7,8.866277,-0.038526,0.077797,-8.259203,-4.135304,0.001304,0.000643,0.000001,0.000000 -148.5927,16.9488,44.85,-22.62,False UCAC4-535-007711,4.01220503,16.8837529,0.00,12.40,0.00,0.0,0,,4.03417998,16.9487961,0.81,0.00,1,0,1 1712,Angola,15.38,67.0,2.6777,0,0,-1.890,-13.58,,3.4,0 0,167.0924,2022,12,7,17.6548,237.4533,19.3953,0.15467,3.16205,2.67298,10.08,5.0,0.15 1.300,0.0173,0.0030,99,0.0103,Known errors,-1.00,-1,-1,-1 20221207_007711,59914.08 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Dec 01, 01:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org