IOTA/IOTA-ES occultation update for (376) Geometria / UCAC4 338-170219 event on 2024 Oct 12, 11:43 UT Visible from Summary ------- On 2024 Oct 12 UT, the 35.6371323723902 km diameter asteroid (376) Geometria will occult a 11.7 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.19 mag to 13.71 mag (the magnitude of the asteroid) for at most 1.360 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 Oct 12, 11:39 - 2024 Oct 12, 11:47 * geocentric midpoint of event [JD]: 2460595.98875162 * magnitude of target star: 11.68 * magnitude drop [mag]: 2.19 * estimated maximum duration [s]: 1.360 * Moon: 69 % sunlit, 33° distance * Sun: 80° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 38 * 1 sigma uncertainty interval [path widths]: +/- 0.12 * 1 sigma uncertainty interval [seconds]: +/- 1.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.023, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.003", 81°) * approx speed of asteroid's shadow [km/s]: 26.2858 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 338-170219 by 376 Geometria on 2024 Oct 12 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 - 2 0 0 9 20 17 11 39 57.9 0 113 73 9 9 14 9 31 21 9 6 32 9 34 4 .... - 1 0 0 8 55 27 11 39 58.0 1 113 73 8 44 24 9 6 30 8 41 43 9 9 12 -0.08 0 0 0 8 30 49 11 39 58.1 2 113 74 8 19 47 8 41 51 8 17 6 8 44 33 -0.19 1 0 0 8 6 24 11 39 58.4 3 113 74 7 55 23 8 17 25 7 52 42 8 20 7 -0.23 2 0 0 7 42 13 11 39 58.7 4 113 75 7 31 13 7 53 13 7 28 32 7 55 54 -0.26 3 0 0 7 18 16 11 39 59.1 6 113 75 7 7 17 7 29 15 7 4 36 7 31 56 -0.27 4 0 0 6 54 33 11 39 59.6 7 114 75 6 43 36 7 5 32 6 40 55 7 8 13 -0.28 5 0 0 6 31 7 11 40 0.2 8 114 75 6 20 10 6 42 4 6 17 30 6 44 45 -0.29 6 0 0 6 7 56 11 40 0.9 9 114 76 5 57 0 6 18 52 5 54 20 6 21 32 -0.29 7 0 0 5 45 1 11 40 1.6 10 114 76 5 34 7 5 55 56 5 31 27 5 58 37 -0.29 8 0 0 5 22 24 11 40 2.5 11 114 75 5 11 30 5 33 18 5 8 51 5 35 58 -0.30 9 0 0 5 0 3 11 40 3.4 12 114 75 4 49 11 5 10 57 4 46 32 5 13 36 -0.30 10 0 0 4 38 1 11 40 4.5 13 114 75 4 27 10 4 48 53 4 24 31 4 51 33 -0.30 11 0 0 4 16 18 11 40 5.6 14 114 75 4 5 27 4 27 9 4 2 49 4 29 48 -0.30 12 0 0 3 54 53 11 40 6.8 15 114 74 3 44 3 4 5 43 3 41 25 4 8 21 -0.31 13 0 0 3 33 47 11 40 8.1 16 115 74 3 22 59 3 44 36 3 20 21 3 47 14 -0.31 14 0 0 3 13 1 11 40 9.4 17 115 73 3 2 14 3 23 49 2 59 36 3 26 27 -0.31 15 0 0 2 52 35 11 40 10.9 18 115 73 2 41 50 3 3 22 2 39 12 3 6 0 -0.31 16 0 0 2 32 30 11 40 12.4 19 115 72 2 21 45 2 43 16 2 19 8 2 45 53 -0.31 17 0 0 2 12 46 11 40 14.0 20 115 72 2 2 2 2 23 30 1 59 25 2 26 8 -0.31 18 0 0 1 53 23 11 40 15.7 21 115 71 1 42 40 2 4 6 1 40 3 2 6 43 -0.31 19 0 0 1 34 21 11 40 17.4 23 115 70 1 23 40 1 45 4 1 21 3 1 47 41 -0.31 20 0 0 1 15 42 11 40 19.3 24 115 70 1 5 2 1 26 23 1 2 25 1 29 0 -0.32 21 0 0 0 57 25 11 40 21.2 25 115 69 0 46 46 1 8 5 0 44 10 1 10 41 -0.32 22 0 0 0 39 30 11 40 23.2 26 115 68 0 28 52 0 50 9 0 26 16 0 52 46 -0.32 23 0 0 0 21 59 11 40 25.2 27 115 67 0 11 22 0 32 37 0 8 46 0 35 13 -0.32 24 0 0 0 4 51 11 40 27.4 28 116 66 - 0 5 46 0 15 27 - 0 8 21 0 18 3 -0.32 25 0 0 - 0 11 54 11 40 29.6 29 116 65 - 0 22 29 - 0 1 19 - 0 25 4 0 1 17 -0.32 26 0 0 - 0 28 15 11 40 31.9 30 116 64 - 0 38 50 - 0 17 41 - 0 41 24 - 0 15 6 -0.32 27 0 0 - 0 44 13 11 40 34.2 31 116 64 - 0 54 46 - 0 33 39 - 0 57 20 - 0 31 4 -0.32 28 0 0 - 0 59 45 11 40 36.6 32 116 63 - 1 10 17 - 0 49 13 - 1 12 52 - 0 46 38 -0.32 29 0 0 - 1 14 54 11 40 39.1 33 116 62 - 1 25 25 - 1 4 22 - 1 27 59 - 1 1 48 -0.32 30 0 0 - 1 29 38 11 40 41.7 34 116 61 - 1 40 8 - 1 19 7 - 1 42 41 - 1 16 33 -0.32 31 0 0 - 1 43 56 11 40 44.3 35 116 60 - 1 54 25 - 1 33 27 - 1 56 59 - 1 30 53 -0.32 32 0 0 - 1 57 50 11 40 46.9 36 117 59 - 2 8 18 - 1 47 21 - 2 10 51 - 1 44 47 -0.32 33 0 0 - 2 11 18 11 40 49.7 37 117 58 - 2 21 45 - 2 0 50 - 2 24 19 - 1 58 17 -0.32 34 0 0 - 2 24 21 11 40 52.5 38 117 57 - 2 34 47 - 2 13 54 - 2 37 20 - 2 11 21 -0.32 35 0 0 - 2 36 58 11 40 55.3 39 117 56 - 2 47 24 - 2 26 32 - 2 49 57 - 2 23 59 -0.32 36 0 0 - 2 49 10 11 40 58.3 40 117 55 - 2 59 34 - 2 38 45 - 3 2 7 - 2 36 12 -0.32 37 0 0 - 3 0 55 11 41 1.2 41 117 54 - 3 11 19 - 2 50 31 - 3 13 52 - 2 47 58 -0.32 38 0 0 - 3 12 15 11 41 4.3 42 118 53 - 3 22 38 - 3 1 51 - 3 25 10 - 2 59 19 -0.32 39 0 0 - 3 23 8 11 41 7.3 43 118 52 - 3 33 30 - 3 12 45 - 3 36 2 - 3 10 13 -0.33 40 0 0 - 3 33 35 11 41 10.5 44 118 51 - 3 43 56 - 3 23 13 - 3 46 28 - 3 20 41 -0.33 41 0 0 - 3 43 35 11 41 13.7 45 118 50 - 3 53 56 - 3 33 14 - 3 56 28 - 3 30 42 -0.33 42 0 0 - 3 53 9 11 41 16.9 46 119 49 - 4 3 29 - 3 42 48 - 4 6 1 - 3 40 17 -0.33 43 0 0 - 4 2 16 11 41 20.2 47 119 48 - 4 12 36 - 3 51 56 - 4 15 7 - 3 49 25 -0.33 44 0 0 - 4 10 57 11 41 23.6 48 119 47 - 4 21 15 - 4 0 37 - 4 23 47 - 3 58 6 -0.33 45 0 0 - 4 19 10 11 41 26.9 49 120 46 - 4 29 28 - 4 8 51 - 4 31 59 - 4 6 20 -0.33 46 0 0 - 4 26 57 11 41 30.4 50 120 45 - 4 37 14 - 4 16 38 - 4 39 45 - 4 14 7 -0.33 47 0 0 - 4 34 16 11 41 33.9 50 120 44 - 4 44 33 - 4 23 59 - 4 47 4 - 4 21 28 -0.33 48 0 0 - 4 41 9 11 41 37.4 51 121 43 - 4 51 25 - 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58 -0.33 73 0 0 - 5 4 7 11 43 16.5 70 152 18 - 5 14 22 - 4 53 51 - 5 16 53 - 4 51 21 -0.33 74 0 0 - 4 59 3 11 43 20.8 70 154 17 - 5 9 19 - 4 48 47 - 5 11 49 - 4 46 16 -0.33 75 0 0 - 4 53 31 11 43 25.1 71 157 16 - 5 3 47 - 4 43 15 - 5 6 18 - 4 40 44 -0.33 76 0 0 - 4 47 32 11 43 29.4 71 160 15 - 4 57 49 - 4 37 15 - 5 0 19 - 4 34 44 -0.33 77 0 0 - 4 41 6 11 43 33.7 71 162 14 - 4 51 23 - 4 30 48 - 4 53 53 - 4 28 17 -0.33 78 0 0 - 4 34 12 11 43 38.0 71 165 13 - 4 44 29 - 4 23 54 - 4 47 0 - 4 21 22 -0.33 79 0 0 - 4 26 50 11 43 42.3 72 168 12 - 4 37 8 - 4 16 32 - 4 39 39 - 4 14 0 -0.33 80 0 0 - 4 19 1 11 43 46.7 72 171 11 - 4 29 20 - 4 8 42 - 4 31 51 - 4 6 11 -0.33 81 0 0 - 4 10 45 11 43 51.0 72 174 10 - 4 21 5 - 4 0 26 - 4 23 36 - 3 57 54 -0.33 82 0 0 - 4 2 2 11 43 55.3 72 177 9 - 4 12 22 - 3 51 42 - 4 14 53 - 3 49 10 -0.33 83 0 0 - 3 52 52 11 43 59.7 71 180 8 - 4 3 13 - 3 42 31 - 4 5 44 - 3 39 59 -0.33 84 0 0 - 3 43 15 11 44 4.0 71 183 7 - 3 53 36 - 3 32 53 - 3 56 8 - 3 30 21 -0.33 85 0 0 - 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212 -6 - 1 8 35 - 0 47 28 - 1 11 9 - 0 44 53 -0.33 98 0 0 - 0 42 19 11 45 4.2 64 213 -8 - 0 52 53 - 0 31 45 - 0 55 28 - 0 29 10 -0.33 99 0 0 - 0 26 12 11 45 8.4 63 215 -9 - 0 36 47 - 0 15 36 - 0 39 22 - 0 13 1 -0.33 100 0 0 - 0 9 40 11 45 12.6 62 216 -10 - 0 20 16 0 0 57 - 0 22 51 0 3 32 -0.33 101 0 0 0 7 16 11 45 16.7 61 217 -11 - 0 3 21 0 17 54 - 0 5 56 0 20 30 -0.33 102 0 0 0 24 37 11 45 20.9 60 218 -12 0 13 58 0 35 15 0 11 23 0 37 52 -0.33 103 0 0 0 42 21 11 45 24.9 59 220 -13 0 31 41 0 53 1 0 29 5 0 55 37 -0.33 104 0 0 1 0 28 11 45 29.0 59 220 -14 0 49 48 1 11 9 0 47 11 1 13 46 -0.33 105 0 0 1 18 59 11 45 33.0 58 221 -15 1 8 17 1 29 41 1 5 41 1 32 18 -0.33 106 0 0 1 37 52 11 45 37.0 57 222 -16 1 27 10 1 48 36 1 24 33 1 51 13 -0.33 107 0 0 1 57 8 11 45 41.0 56 223 -17 1 46 24 2 7 53 1 43 47 2 10 30 -0.33 108 0 0 2 16 46 11 45 44.9 55 224 -18 2 6 1 2 27 32 2 3 24 2 30 10 -0.33 109 0 0 2 36 46 11 45 48.8 54 225 -19 2 26 0 2 47 33 2 23 23 2 50 11 -0.33 110 0 0 2 57 8 11 45 52.6 53 225 -20 2 46 21 3 7 56 2 43 43 3 10 34 -0.33 111 0 0 3 17 50 11 45 56.4 52 226 -21 3 7 2 3 28 39 3 4 24 3 31 18 -0.33 112 0 0 3 38 53 11 46 0.1 51 227 -22 3 28 4 3 49 44 3 25 25 3 52 23 -0.33 113 0 0 4 0 17 11 46 3.8 50 227 -23 3 49 26 4 11 8 3 46 47 4 13 47 -0.33 114 0 0 4 22 0 11 46 7.5 49 228 -24 4 11 8 4 32 52 4 8 29 4 35 32 -0.33 115 0 0 4 44 2 11 46 11.1 48 228 -25 4 33 9 4 54 56 4 30 30 4 57 36 -0.33 116 0 0 5 6 24 11 46 14.6 47 229 -26 4 55 30 5 17 18 4 52 50 5 19 58 -0.33 117 0 0 5 29 3 11 46 18.1 46 229 -27 5 18 8 5 39 59 5 15 28 5 42 39 -0.33 118 0 0 5 52 1 11 46 21.6 45 230 -28 5 41 4 6 2 58 5 38 24 6 5 38 -0.33 119 0 0 6 15 15 11 46 24.9 44 230 -29 6 4 18 6 26 14 6 1 38 6 28 54 -0.33 120 0 0 6 38 47 11 46 28.3 43 231 -31 6 27 49 6 49 46 6 25 8 6 52 27 -0.33 121 0 0 7 2 35 11 46 31.5 42 231 -32 6 51 36 7 13 35 6 48 55 7 16 16 -0.33 122 0 0 7 26 38 11 46 34.7 41 232 -33 7 15 38 7 37 40 7 12 57 7 40 21 -0.33 123 0 0 7 50 57 11 46 37.8 40 232 -34 7 39 56 8 1 59 7 37 14 8 4 41 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39 6 -0.33 137 0 0 13 51 51 11 47 14.1 25 237 -48 13 40 38 14 3 4 13 37 54 14 5 49 -0.33 138 0 0 14 18 38 11 47 16.0 24 237 -49 14 7 25 14 29 52 14 4 41 14 32 37 -0.33 139 0 0 14 45 30 11 47 18.0 23 237 -49 14 34 17 14 56 45 14 31 32 14 59 30 -0.33 140 0 0 15 12 26 11 47 19.8 22 238 -50 15 1 12 15 23 41 14 58 27 15 26 26 -0.33 141 0 0 15 39 24 11 47 21.5 21 238 -51 15 28 10 15 50 39 15 25 25 15 53 25 -0.33 142 0 0 16 6 25 11 47 23.2 20 238 -52 15 55 10 16 17 40 15 52 25 16 20 25 -0.33 143 0 0 16 33 26 11 47 24.8 19 239 -53 16 22 11 16 44 42 16 19 26 16 47 28 -0.33 144 0 0 17 0 29 11 47 26.2 18 239 -54 16 49 13 17 11 45 16 46 28 17 14 30 -0.33 145 0 0 17 27 31 11 47 27.6 17 239 -55 17 16 15 17 38 48 17 13 30 17 41 33 -0.33 146 0 0 17 54 33 11 47 28.9 16 240 -56 17 43 17 18 5 50 17 40 32 18 8 35 -0.33 147 0 0 18 21 33 11 47 30.2 15 240 -56 18 10 17 18 32 50 18 7 32 18 35 36 -0.33 148 0 0 18 48 31 11 47 31.3 14 240 -57 18 37 15 18 59 48 18 34 30 19 2 33 -0.33 149 0 0 19 15 26 11 47 32.4 12 241 -58 19 4 10 19 26 43 19 1 24 19 29 28 -0.33 150 0 0 19 42 17 11 47 33.3 11 241 -59 19 31 1 19 53 34 19 28 16 19 56 20 -0.33 151 0 0 20 9 4 11 47 34.2 10 241 -60 19 57 48 20 20 21 19 55 3 20 23 7 -0.33 152 0 0 20 35 46 11 47 35.0 9 242 -60 20 24 30 20 47 3 20 21 45 20 49 48 -0.33 153 0 0 21 2 22 11 47 35.7 8 242 -61 20 51 6 21 13 39 20 48 21 21 16 24 -0.33 154 0 0 21 28 52 11 47 36.3 7 242 -62 21 17 36 21 40 9 21 14 51 21 42 54 -0.33 155 0 0 21 55 15 11 47 36.9 6 243 -62 21 43 59 22 6 31 21 41 14 22 9 17 -0.33 156 0 0 22 21 30 11 47 37.3 5 243 -63 22 10 14 22 32 46 22 7 30 22 35 31 -0.33 157 0 0 22 47 37 11 47 37.7 4 244 -63 22 36 22 22 58 53 22 33 37 23 1 38 -0.33 158 0 0 23 13 35 11 47 38.0 3 244 -64 23 2 20 23 24 50 22 59 35 23 27 35 -0.33 159 0 0 23 39 23 11 47 38.2 2 244 -65 23 28 9 23 50 38 23 25 24 23 53 23 -0.33 160 0 0 24 5 2 11 47 38.3 1 245 -65 23 53 48 24 16 16 23 51 3 24 19 1 -0.33 161 0 0 24 30 29 11 47 38.3 0 245 -65 24 19 16 24 41 44 24 16 31 24 44 28 -0.38 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 338-170219 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 40 14.9886 DE: -22 26 35.401 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 40 14.9885 DE: -22 26 35.401 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.7 * B mag [mag]: 12.5 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (376) Geometria asteroid class: approx. diameter [km]: 36 approx. diameter ["]: 0.026 distance from Earth [AU]: 1.91470 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#101 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): 0.023", 0.003", 80.601° remarks: * orbital elements for (376)Geometria : Mean anomaly = 36.2683690056 deg Arg. of pericenter = 316.5524264203 deg Long. of node = 301.9513969637 deg Inclination = 5.4304551110 deg Eccentricity = 0.1726151826 Semimajor axis = 2.2882193948 AU Perihelion dist = 1.8932379861 AU Mag: H = 9.52, G = 0.15 Epoch of elements : MJD 60595.48875133 TDT (2024 Oct 12.4888) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1012023Apr24,1.36,2024,10,12,11.730039,-0.045251,0.311579,14.683955,2.121560,0.005185,0.000388,0.000000,0.000000 82.9405,-22.4213,0.64,-7.69,False UCAC4 338-170219,18.67083020,-22.4431669,12.48,11.68,11.25,0.1,0,,18.69561760,-22.4212743,2.18,2.17,0,0,0 376,Geometria,13.71,35.776,1.9147,0,0,4.864,9.75,,2.0,0 0,36.1292,2024,10,12,316.5524,301.9514,5.4305,0.17262,2.28822,1.89324,9.51,5.0,0.15 1.122,0.0233,0.0031,81,0.0031,Known errors,0.87,0,-1,-1 20241012_170219,60140.63 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:05 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org