IOTA/IOTA-ES occultation update for (813) Baumeia / UCAC4 372-179874 event on 2024 Nov 22, 15:04 UT Visible from Summary ------- On 2024 Nov 22 UT, the 12.2303009325122 km diameter asteroid (813) Baumeia will occult a 9.2 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.70 mag to 15.86 mag (the magnitude of the asteroid) for at most 0.710 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 Nov 22, 15:00 - 2024 Nov 22, 15:09 * geocentric midpoint of event [JD]: 2460637.12837471 * magnitude of target star: 9.16 * magnitude drop [mag]: 6.70 * estimated maximum duration [s]: 0.710 * Moon: 55 % sunlit, 172° distance * Sun: 93° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 17 * 1 sigma uncertainty interval [path widths]: +/- 0.30 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.001", 69°) * approx speed of asteroid's shadow [km/s]: 17.4894 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 372-179874 by 813 Baumeia on 2024 Nov 22 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 - 36 0 0 11 27 24 15 0 33.8 1 106 56 11 22 30 11 32 19 11 19 36 11 35 14 .... - 35 0 0 11 11 27 15 0 34.0 2 106 56 11 6 34 11 16 21 11 3 40 11 19 15 -0.58 - 34 0 0 10 56 23 15 0 34.3 3 106 56 10 51 31 11 1 15 10 48 38 11 4 9 -0.75 - 33 0 0 10 42 12 15 0 34.8 4 107 55 10 37 21 10 47 3 10 34 28 10 49 56 -0.82 - 32 0 0 10 28 54 15 0 35.4 5 107 55 10 24 4 10 33 45 10 21 12 10 36 37 -0.86 - 31 0 0 10 16 29 15 0 36.2 6 107 55 10 11 40 10 21 19 10 8 48 10 24 11 -0.89 - 30 0 0 10 4 58 15 0 37.2 7 107 55 10 0 9 10 9 47 9 57 18 10 12 38 -0.91 - 29 0 0 9 54 19 15 0 38.3 8 107 54 9 49 31 9 59 8 9 46 41 10 1 59 -0.92 - 28 0 0 9 44 34 15 0 39.6 9 107 54 9 39 46 9 49 22 9 36 56 9 52 13 -0.93 - 27 0 0 9 35 41 15 0 41.0 10 108 53 9 30 54 9 40 29 9 28 5 9 43 19 -0.94 - 26 0 0 9 27 42 15 0 42.5 11 108 53 9 22 56 9 32 29 9 20 6 9 35 19 -0.94 - 25 0 0 9 20 36 15 0 44.3 12 108 52 9 15 50 9 25 22 9 13 1 9 28 12 -0.95 - 24 0 0 9 14 23 15 0 46.1 12 108 52 9 9 37 9 19 9 9 6 48 9 21 58 -0.96 - 23 0 0 9 9 3 15 0 48.2 13 108 51 9 4 17 9 13 48 9 1 28 9 16 38 -0.96 - 22 0 0 9 4 36 15 0 50.3 14 109 51 8 59 50 9 9 21 8 57 2 9 12 10 -0.96 - 21 0 0 9 1 2 15 0 52.6 15 109 50 8 56 17 9 5 47 8 53 28 9 8 36 -0.97 - 20 0 0 8 58 21 15 0 55.1 16 109 49 8 53 36 9 3 6 8 50 48 9 5 56 -0.97 - 19 0 0 8 56 34 15 0 57.7 17 109 49 8 51 49 9 1 19 8 49 0 9 4 8 -0.97 - 18 0 0 8 55 40 15 1 0.4 18 110 48 8 50 55 9 0 25 8 48 6 9 3 14 -0.97 - 17 0 0 8 55 39 15 1 3.3 19 110 47 8 50 54 9 0 24 8 48 6 9 3 14 -0.98 - 16 0 0 8 56 32 15 1 6.4 20 110 47 8 51 47 9 1 18 8 48 58 9 4 7 -0.98 - 15 0 0 8 58 19 15 1 9.5 21 111 46 8 53 33 9 3 4 8 50 45 9 5 54 -0.98 - 14 0 0 9 0 59 15 1 12.8 22 111 45 8 56 13 9 5 45 8 53 24 9 8 34 -0.98 - 13 0 0 9 4 33 15 1 16.3 23 111 44 8 59 47 9 9 19 8 56 58 9 12 9 -0.98 - 12 0 0 9 9 1 15 1 19.9 24 112 43 9 4 15 9 13 48 9 1 26 9 16 38 -0.99 - 11 0 0 9 14 24 15 1 23.6 25 112 43 9 9 37 9 19 11 9 6 47 9 22 1 -0.99 - 10 0 0 9 20 40 15 1 27.5 26 112 42 9 15 53 9 25 28 9 13 3 9 28 18 -0.99 - 9 0 0 9 27 51 15 1 31.4 26 113 41 9 23 4 9 32 40 9 20 13 9 35 30 -0.99 - 8 0 0 9 35 57 15 1 35.6 27 113 40 9 31 9 9 40 46 9 28 18 9 43 37 -0.99 - 7 0 0 9 44 58 15 1 39.8 28 114 39 9 40 9 9 49 48 9 37 18 9 52 39 -0.99 - 6 0 0 9 54 54 15 1 44.2 29 114 38 9 50 4 9 59 44 9 47 12 10 2 36 -0.99 - 5 0 0 10 5 45 15 1 48.7 30 115 37 10 0 54 10 10 36 9 58 2 10 13 29 -0.99 - 4 0 0 10 17 31 15 1 53.4 31 115 36 10 12 40 10 22 23 10 9 47 10 25 17 -1.00 - 3 0 0 10 30 13 15 1 58.1 32 116 35 10 25 21 10 35 6 10 22 28 10 38 0 -1.00 - 2 0 0 10 43 52 15 2 3.0 32 116 34 10 38 58 10 48 46 10 36 4 10 51 40 -1.00 - 1 0 0 10 58 26 15 2 8.1 33 117 33 10 53 31 11 3 21 10 50 37 11 6 16 -1.00 0 0 0 11 13 56 15 2 13.2 34 117 32 11 9 1 11 18 53 11 6 5 11 21 49 -1.00 1 0 0 11 30 24 15 2 18.5 35 118 31 11 25 27 11 35 21 11 22 31 11 38 18 -1.00 2 0 0 11 47 48 15 2 23.9 35 119 30 11 42 49 11 52 47 11 39 53 11 55 44 -1.00 3 0 0 12 6 9 15 2 29.4 36 120 29 12 1 9 12 11 9 11 58 12 12 14 8 -1.00 4 0 0 12 25 28 15 2 35.0 37 120 28 12 20 26 12 30 29 12 17 28 12 33 29 -1.00 5 0 0 12 45 44 15 2 40.8 38 121 27 12 40 41 12 50 47 12 37 41 12 53 47 -1.00 6 0 0 13 6 58 15 2 46.6 38 122 26 13 1 53 13 12 3 12 58 53 13 15 4 -1.00 7 0 0 13 29 10 15 2 52.6 39 123 25 13 24 3 13 34 16 13 21 2 13 37 18 -1.00 8 0 0 13 52 20 15 2 58.6 39 124 24 13 47 12 13 57 28 13 44 9 14 0 31 -1.00 9 0 0 14 16 28 15 3 4.8 40 125 23 14 11 18 14 21 39 14 8 15 14 24 43 -1.00 10 0 0 14 41 36 15 3 11.1 41 126 22 14 36 24 14 46 48 14 33 19 14 49 54 -1.00 11 0 0 15 7 42 15 3 17.5 41 127 21 15 2 28 15 12 56 14 59 22 15 16 3 -1.00 12 0 0 15 34 47 15 3 24.0 42 128 20 15 29 31 15 40 4 15 26 24 15 43 12 -1.00 13 0 0 16 2 51 15 3 30.5 42 129 19 15 57 33 16 8 10 15 54 25 16 11 19 -1.00 14 0 0 16 31 55 15 3 37.2 43 131 18 16 26 34 16 37 16 16 23 24 16 40 26 -1.00 15 0 0 17 1 57 15 3 44.0 43 132 17 16 56 34 17 7 21 16 53 23 17 10 33 -1.00 16 0 0 17 32 59 15 3 50.8 43 133 16 17 27 34 17 38 25 17 24 21 17 41 39 -1.00 17 0 0 18 5 1 15 3 57.7 44 134 14 17 59 33 18 10 29 17 56 19 18 13 44 -1.00 18 0 0 18 38 1 15 4 4.7 44 136 13 18 32 31 18 43 33 18 29 15 18 46 49 -1.00 19 0 0 19 12 1 15 4 11.8 44 137 12 19 6 28 19 17 35 19 3 11 19 20 53 -1.00 20 0 0 19 47 0 15 4 18.9 44 139 11 19 41 24 19 52 37 19 38 5 19 55 57 -1.00 21 0 0 20 22 58 15 4 26.1 45 140 10 20 17 19 20 28 38 20 13 58 20 31 59 -1.00 22 0 0 20 59 54 15 4 33.3 45 142 9 20 54 12 21 5 37 20 50 50 21 9 1 -1.00 23 0 0 21 37 49 15 4 40.6 45 143 8 21 32 4 21 43 35 21 28 40 21 47 1 -1.00 24 0 0 22 16 42 15 4 48.0 45 145 7 22 10 54 22 22 31 22 7 28 22 25 59 -1.00 25 0 0 22 56 32 15 4 55.3 45 146 5 22 50 41 23 2 25 22 47 13 23 5 54 -1.00 26 0 0 23 37 20 15 5 2.7 45 148 4 23 31 25 23 43 16 23 27 55 23 46 47 -1.00 27 0 0 24 19 4 15 5 10.2 45 149 3 24 13 5 24 25 3 24 9 33 24 28 36 -1.00 28 0 0 25 1 43 15 5 17.6 45 151 2 24 55 41 25 7 46 24 52 7 25 11 22 -1.00 29 0 0 25 45 18 15 5 25.1 44 152 1 25 39 12 25 51 24 25 35 35 25 55 2 -1.00 30 0 0 26 29 46 15 5 32.5 44 154 0 26 23 36 26 35 57 26 19 58 26 39 36 -1.00 31 0 0 27 15 7 15 5 40.0 44 156 -1 27 8 54 27 21 22 27 5 13 27 25 4 -1.00 32 0 0 28 1 20 15 5 47.4 44 157 -3 27 55 3 28 7 39 27 51 20 28 11 23 -1.00 33 0 0 28 48 24 15 5 54.8 43 159 -4 28 42 3 28 54 46 28 38 17 28 58 33 -1.00 34 0 0 29 36 17 15 6 2.2 43 160 -5 29 29 51 29 42 43 29 26 3 29 46 33 -1.00 35 0 0 30 24 57 15 6 9.5 42 162 -6 30 18 28 30 31 28 30 14 37 30 35 20 -1.00 36 0 0 31 14 24 15 6 16.8 42 163 -7 31 7 50 31 20 59 31 3 57 31 24 54 -1.00 37 0 0 32 4 35 15 6 24.0 41 165 -8 31 57 56 32 11 14 31 54 1 32 15 12 -1.00 38 0 0 32 55 28 15 6 31.2 41 166 -9 32 48 45 33 2 12 32 44 47 33 6 12 -1.00 39 0 0 33 47 2 15 6 38.2 40 168 -10 33 40 14 33 53 50 33 36 13 33 57 53 -1.00 40 0 0 34 39 13 15 6 45.2 39 169 -11 34 32 21 34 46 6 34 28 18 34 50 12 -1.00 41 0 0 35 32 0 15 6 52.1 39 171 -12 35 25 4 35 38 58 35 20 57 35 43 7 -1.00 42 0 0 36 25 21 15 6 58.9 38 172 -14 36 18 19 36 32 23 36 14 10 36 36 34 -1.00 43 0 0 37 19 11 15 7 5.5 37 173 -15 37 12 5 37 26 19 37 7 53 37 30 33 -1.00 44 0 0 38 13 30 15 7 12.1 36 175 -16 38 6 19 38 20 42 38 2 4 38 24 59 -1.00 45 0 0 39 8 13 15 7 18.4 35 176 -17 39 0 57 39 15 30 38 56 40 39 19 50 -1.00 46 0 0 40 3 17 15 7 24.7 34 177 -18 39 55 57 40 10 39 39 51 37 40 15 2 -1.00 47 0 0 40 58 41 15 7 30.8 34 178 -18 40 51 16 41 6 8 40 46 52 41 10 33 -1.00 48 0 0 41 54 19 15 7 36.7 33 179 -19 41 46 49 42 1 51 41 42 23 42 6 19 -1.00 49 0 0 42 50 8 15 7 42.4 32 181 -20 42 42 34 42 57 45 42 38 5 43 2 16 -1.00 50 0 0 43 46 5 15 7 48.0 31 182 -21 43 38 26 43 53 46 43 33 54 43 58 20 -1.00 51 0 0 44 42 6 15 7 53.4 30 183 -22 44 34 22 44 49 52 44 29 47 44 54 28 -1.00 52 0 0 45 38 7 15 7 58.6 29 184 -23 45 30 18 45 45 57 45 25 41 45 50 37 -1.00 53 0 0 46 34 4 15 8 3.6 28 185 -24 46 26 10 46 41 59 46 21 31 46 46 41 -1.00 54 0 0 47 29 53 15 8 8.4 27 186 -24 47 21 55 47 37 52 47 17 13 47 42 37 -1.00 55 0 0 48 25 30 15 8 13.0 26 187 -25 48 17 28 48 33 34 48 12 43 48 38 21 -1.00 56 0 0 49 20 51 15 8 17.4 25 188 -26 49 12 45 49 28 59 49 7 58 49 33 49 -1.00 57 0 0 50 15 53 15 8 21.6 24 189 -27 50 7 43 50 24 5 50 2 54 50 28 57 -1.00 58 0 0 51 10 30 15 8 25.6 23 190 -27 51 2 16 51 18 46 50 57 25 51 23 41 -1.00 59 0 0 52 4 40 15 8 29.4 22 191 -28 51 56 22 52 12 59 51 51 29 52 17 56 -1.00 60 0 0 52 58 17 15 8 32.9 21 192 -28 52 49 57 53 6 40 52 45 1 53 11 39 -1.00 61 0 0 53 51 20 15 8 36.3 20 193 -29 53 42 56 53 59 45 53 37 59 54 4 46 -1.00 62 0 0 54 43 42 15 8 39.4 19 194 -29 54 35 16 54 52 11 54 30 17 54 57 14 -1.00 63 0 0 55 35 23 15 8 42.4 18 195 -30 55 26 54 55 43 54 55 21 53 55 48 58 -1.01 64 0 0 56 26 16 15 8 45.1 17 196 -30 56 17 45 56 34 50 56 12 43 56 39 55 -1.01 65 0 0 57 16 20 15 8 47.6 16 197 -31 57 7 47 57 24 56 57 2 44 57 30 2 -1.01 66 0 0 58 5 32 15 8 50.0 15 198 -31 57 56 57 58 14 9 57 51 53 58 19 16 -1.01 67 0 0 58 53 48 15 8 52.2 14 199 -31 58 45 12 59 2 26 58 40 8 59 7 34 -1.01 68 0 0 59 41 6 15 8 54.2 13 200 -32 59 32 30 59 49 46 59 27 25 59 54 54 -1.01 69 0 0 60 27 25 15 8 56.0 12 201 -32 60 18 47 60 36 4 60 13 42 60 41 13 -1.01 70 0 0 61 12 41 15 8 57.6 11 202 -32 61 4 3 61 21 20 60 58 58 61 26 30 -1.01 71 0 0 61 56 53 15 8 59.1 11 202 -33 61 48 15 62 5 32 61 43 10 62 10 41 -1.01 72 0 0 62 39 59 15 9 0.5 10 203 -33 62 31 23 62 48 38 62 26 18 62 53 47 -1.01 73 0 0 63 21 59 15 9 1.7 9 204 -33 63 13 23 63 30 37 63 8 19 63 35 45 -1.02 74 0 0 64 2 52 15 9 2.8 8 205 -33 63 54 17 64 11 28 63 49 13 64 16 36 -1.02 75 0 0 64 42 36 15 9 3.7 7 206 -33 64 34 3 64 51 11 64 29 0 64 56 17 -1.02 76 0 0 65 21 11 15 9 4.5 7 207 -33 65 12 40 65 29 45 65 7 39 65 34 50 -1.02 77 0 0 65 58 38 15 9 5.3 6 208 -33 65 50 9 66 7 9 65 45 9 66 12 13 -1.02 78 0 0 66 34 56 15 9 5.9 5 209 -33 66 26 30 66 43 24 66 21 31 66 48 27 -1.03 79 0 0 67 10 6 15 9 6.4 4 210 -34 67 1 42 67 18 31 66 56 45 67 23 32 -1.03 80 0 0 67 44 8 15 9 6.8 4 211 -34 67 35 47 67 52 30 67 30 52 67 57 29 -1.03 81 0 0 68 17 3 15 9 7.1 3 212 -34 68 8 46 68 25 22 68 3 52 68 30 18 -1.04 82 0 0 68 48 51 15 9 7.4 2 213 -34 68 40 38 68 57 7 68 35 47 69 2 1 -1.05 83 0 0 69 19 35 15 9 7.6 2 214 -34 69 11 25 69 27 46 69 6 36 69 32 39 -1.06 84 0 0 69 49 14 15 9 7.7 1 214 -34 69 41 9 69 57 22 69 36 22 70 2 12 -1.09 85 0 0 70 17 51 15 9 7.8 1 215 -34 70 9 50 70 25 55 70 5 6 70 30 42 -1.17 86 0 0 .. .. .... .. .. .. .. .. .. 70 37 30 .. .. .. 70 32 48 .. .. .. .... Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 372-179874 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 22 28 36.8595 DE: -15 40 00.147 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 22 28 36.8594 DE: -15 40 00.148 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 9.2 * B mag [mag]: 9.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (813) Baumeia asteroid class: approx. diameter [km]: 12 approx. diameter ["]: 0.009 distance from Earth [AU]: 1.88480 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 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): 0.011", 0.001", 68.599° remarks: * orbital elements for (813)Baumeia : Mean anomaly = 352.4998618192 deg Arg. of pericenter = 316.1156501266 deg Long. of node = 51.8816089171 deg Inclination = 6.2958897559 deg Eccentricity = 0.0252197562 Semimajor axis = 2.2228903780 AU Perihelion dist = 2.1668296245 AU Mag: H = 11.60, G = 0.15 Epoch of elements : MJD 60636.62837471 TDT (2024 Nov 22.6284) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Apr24,0.71,2024,11,22,15.080993,-0.385833,0.592815,8.273043,5.385490,0.005179,0.002086,0.000000,0.000000 49.1805,-15.5404,-49.64,-20.32,False UCAC4 372-179874,22.47690545,-15.6667074,9.75,9.16,8.84,0.1,0,,22.49919777,-15.5404395,6.70,6.57,0,0,0 813,Baumeia,15.86,12.367,1.8848,0,0,2.672,25.13,,1.0,0 0,352.3130,2024,11,22,316.1157,51.8816,6.2959,0.02522,2.22289,2.16683,11.59,5.0,0.15 1.296,0.0113,0.0014,69,0.0027,Known errors,0.99,0,-1,-1 20241122_179874,60140.71 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:02 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org