IOTA/IOTA-ES occultation update for (151) Abundantia / UCAC4 298-197319 event on 2024 Sep 20, 12:10 UT Visible from Summary ------- On 2024 Sep 20 UT, the 40.7504180218226 km diameter asteroid (151) Abundantia will occult a 11.2 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 3.08 mag to 14.20 mag (the magnitude of the asteroid) for at most 2.940 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 Sep 20, 12:02 - 2024 Sep 20, 12:18 * geocentric midpoint of event [JD]: 2460574.00713300 * magnitude of target star: 11.19 * magnitude drop [mag]: 3.08 * estimated maximum duration [s]: 2.940 * Moon: 92 % sunlit, 116° distance * Sun: 97° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 41 * 1 sigma uncertainty interval [path widths]: +/- 0.15 * 1 sigma uncertainty interval [seconds]: +/- 1.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.002", 94°) * approx speed of asteroid's shadow [km/s]: 13.9165 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 298-197319 by 151 Abundantia on 2024 Sep 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 - 1 0 0 -11 55 12 12 2 38.2 1 121 77 -12 8 11 -11 42 14 -12 12 11 -11 38 13 .... 0 0 0 -12 30 44 12 2 38.3 2 121 77 -12 43 41 -12 17 47 -12 47 42 -12 13 47 0.12 1 0 0 -13 5 57 12 2 38.7 3 121 76 -13 18 53 -12 53 2 -13 22 53 -12 49 2 0.09 2 0 0 -13 40 49 12 2 39.2 4 120 75 -13 53 43 -13 27 55 -13 57 43 -13 23 56 0.07 3 0 0 -14 15 20 12 2 40.0 5 120 74 -14 28 12 -14 2 28 -14 32 11 -13 58 29 0.06 4 0 0 -14 49 28 12 2 40.8 6 120 73 -15 2 19 -14 36 37 -15 6 17 -14 32 39 0.06 5 0 0 -15 23 13 12 2 41.9 7 120 72 -15 36 2 -15 10 24 -15 40 0 -15 6 26 0.05 6 0 0 -15 56 34 12 2 43.1 8 119 71 -16 9 21 -15 43 47 -16 13 18 -15 39 50 0.05 7 0 0 -16 29 30 12 2 44.5 10 119 70 -16 42 15 -16 16 45 -16 46 12 -16 12 49 0.05 8 0 0 -17 2 1 12 2 46.1 11 119 70 -17 14 44 -16 49 18 -17 18 41 -16 45 22 0.05 9 0 0 -17 34 6 12 2 47.8 12 119 69 -17 46 47 -17 21 25 -17 50 43 -17 17 29 0.05 10 0 0 -18 5 44 12 2 49.7 13 118 68 -18 18 23 -17 53 5 -18 22 18 -17 49 10 0.04 11 0 0 -18 36 55 12 2 51.7 14 118 67 -18 49 32 -18 24 18 -18 53 26 -18 20 23 0.04 12 0 0 -19 7 37 12 2 53.8 15 118 66 -19 20 12 -18 55 2 -19 24 6 -18 51 9 0.04 13 0 0 -19 37 52 12 2 56.2 16 117 65 -19 50 24 -19 25 19 -19 54 17 -19 21 26 0.04 14 0 0 -20 7 37 12 2 58.6 17 117 64 -20 20 7 -19 55 6 -20 24 0 -19 51 14 0.04 15 0 0 -20 36 53 12 3 1.2 18 117 63 -20 49 21 -20 24 24 -20 53 13 -20 20 33 0.04 16 0 0 -21 5 39 12 3 3.9 19 116 62 -21 18 5 -20 53 13 -21 21 56 -20 49 22 0.04 17 0 0 -21 33 55 12 3 6.8 20 116 61 -21 46 19 -21 21 31 -21 50 9 -21 17 41 0.04 18 0 0 -22 1 40 12 3 9.8 21 115 60 -22 14 2 -21 49 19 -22 17 52 -21 45 29 0.04 19 0 0 -22 28 55 12 3 12.9 22 115 59 -22 41 14 -22 16 36 -22 45 3 -22 12 47 0.04 20 0 0 -22 55 38 12 3 16.1 23 115 58 -23 7 56 -22 43 21 -23 11 44 -22 39 33 0.04 21 0 0 -23 21 51 12 3 19.5 24 114 57 -23 34 5 -23 9 36 -23 37 53 -23 5 48 0.03 22 0 0 -23 47 31 12 3 22.9 25 114 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5 0.02 110 0 0 -27 20 11 12 12 16.0 75 253 -22 -27 32 4 -27 8 19 -27 35 45 -27 4 38 0.02 111 0 0 -26 59 14 12 12 23.5 74 253 -23 -27 11 9 -26 47 19 -27 14 50 -26 43 38 0.02 112 0 0 -26 37 43 12 12 31.1 73 252 -24 -26 49 40 -26 25 46 -26 53 22 -26 22 4 0.02 113 0 0 -26 15 38 12 12 38.7 72 251 -25 -26 27 37 -26 3 38 -26 31 20 -25 59 55 0.02 114 0 0 -25 52 58 12 12 46.3 71 251 -26 -26 5 0 -25 40 56 -26 8 44 -25 37 13 0.02 115 0 0 -25 29 45 12 12 53.9 70 250 -27 -25 41 50 -25 17 41 -25 45 34 -25 13 57 0.02 116 0 0 -25 5 58 12 13 1.5 69 250 -28 -25 18 5 -24 53 51 -25 21 50 -24 50 7 0.02 117 0 0 -24 41 37 12 13 9.0 68 249 -29 -24 53 47 -24 29 28 -24 57 32 -24 25 43 0.02 118 0 0 -24 16 43 12 13 16.6 67 249 -30 -24 28 54 -24 4 31 -24 32 41 -24 0 45 0.02 119 0 0 -23 51 14 12 13 24.2 66 248 -31 -24 3 29 -23 39 0 -24 7 16 -23 35 13 0.02 120 0 0 -23 25 13 12 13 31.7 65 247 -32 -23 37 29 -23 12 56 -23 41 17 -23 9 8 0.02 121 0 0 -22 58 37 12 13 39.3 64 247 -33 -23 10 56 -22 46 18 -23 14 45 -22 42 30 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0.03 134 0 0 -16 24 40 12 15 13.9 49 242 -47 -16 37 30 -16 11 51 -16 41 28 -16 7 53 0.03 135 0 0 -15 50 55 12 15 20.7 48 242 -48 -16 3 47 -15 38 4 -16 7 45 -15 34 5 0.03 136 0 0 -15 16 43 12 15 27.5 47 241 -49 -15 29 37 -15 3 50 -15 33 36 -14 59 50 0.03 137 0 0 -14 42 6 12 15 34.2 46 241 -51 -14 55 1 -14 29 10 -14 59 1 -14 25 10 0.03 138 0 0 -14 7 3 12 15 40.8 45 241 -52 -14 20 1 -13 54 6 -14 24 1 -13 50 5 0.03 139 0 0 -13 31 37 12 15 47.2 44 240 -53 -13 44 36 -13 18 38 -13 48 37 -13 14 37 0.03 140 0 0 -12 55 48 12 15 53.6 43 240 -54 -13 8 49 -12 42 47 -13 12 50 -12 38 45 0.03 141 0 0 -12 19 37 12 15 59.8 41 240 -55 -12 32 39 -12 6 34 -12 36 41 -12 2 32 0.03 142 0 0 -11 43 4 12 16 6.0 40 240 -56 -11 56 9 -11 30 0 -12 0 11 -11 25 58 0.04 143 0 0 -11 6 12 12 16 12.0 39 239 -57 -11 19 18 -10 53 7 -11 23 21 -10 49 4 0.04 144 0 0 -10 29 1 12 16 17.9 38 239 -58 -10 42 8 -10 15 54 -10 46 12 -10 11 51 0.04 145 0 0 - 9 51 33 12 16 23.6 37 239 -60 -10 4 41 - 9 38 25 -10 8 45 - 9 34 21 0.04 146 0 0 - 9 13 48 12 16 29.2 36 239 -61 - 9 26 57 - 9 0 38 - 9 31 2 - 8 56 34 0.04 147 0 0 - 8 35 47 12 16 34.7 34 239 -62 - 8 48 58 - 8 22 37 - 8 53 3 - 8 18 32 0.04 148 0 0 - 7 57 33 12 16 40.0 33 239 -63 - 8 10 44 - 7 44 21 - 8 14 49 - 7 40 16 0.04 149 0 0 - 7 19 6 12 16 45.1 32 238 -64 - 7 32 18 - 7 5 53 - 7 36 23 - 7 1 48 0.04 150 0 0 - 6 40 27 12 16 50.1 31 238 -65 - 6 53 40 - 6 27 14 - 6 57 46 - 6 23 8 0.04 151 0 0 - 6 1 38 12 16 54.9 30 238 -66 - 6 14 52 - 5 48 24 - 6 18 58 - 5 44 19 0.04 152 0 0 - 5 22 41 12 16 59.6 28 238 -68 - 5 35 55 - 5 9 26 - 5 40 1 - 5 5 20 0.04 153 0 0 - 4 43 36 12 17 4.1 27 238 -69 - 4 56 51 - 4 30 21 - 5 0 57 - 4 26 15 0.04 154 0 0 - 4 4 24 12 17 8.4 26 238 -70 - 4 17 40 - 3 51 9 - 4 21 46 - 3 47 3 0.04 155 0 0 - 3 25 8 12 17 12.5 25 238 -71 - 3 38 24 - 3 11 53 - 3 42 30 - 3 7 47 0.04 156 0 0 - 2 45 49 12 17 16.5 24 238 -72 - 2 59 5 - 2 32 34 - 3 3 11 - 2 28 27 0.04 157 0 0 - 2 6 28 12 17 20.2 22 238 -73 - 2 19 44 - 1 53 12 - 2 23 50 - 1 49 6 0.04 158 0 0 - 1 27 6 12 17 23.8 21 238 -74 - 1 40 22 - 1 13 51 - 1 44 28 - 1 9 45 0.04 159 0 0 - 0 47 46 12 17 27.2 20 238 -75 - 1 1 1 - 0 34 30 - 1 5 7 - 0 30 24 0.04 160 0 0 - 0 8 27 12 17 30.4 19 238 -76 - 0 21 42 0 4 48 - 0 25 48 0 8 54 0.05 161 0 0 0 30 48 12 17 33.4 18 238 -77 0 17 33 0 44 3 0 13 27 0 48 9 0.05 162 0 0 1 9 58 12 17 36.1 16 238 -78 0 56 44 1 23 12 0 52 38 1 27 18 0.05 163 0 0 1 49 2 12 17 38.7 15 238 -79 1 35 49 2 2 16 1 31 43 2 6 21 0.05 164 0 0 2 27 58 12 17 41.1 14 238 -80 2 14 45 2 41 11 2 10 40 2 45 16 0.05 165 0 0 3 6 46 12 17 43.3 13 238 -80 2 53 34 3 19 58 2 49 29 3 24 3 0.05 166 0 0 3 45 23 12 17 45.3 12 238 -81 3 32 12 3 58 34 3 28 7 4 2 39 0.05 167 0 0 4 23 49 12 17 47.1 10 238 -81 4 10 39 4 36 59 4 6 34 4 41 3 0.05 168 0 0 5 2 2 12 17 48.7 9 238 -82 4 48 53 5 15 11 4 44 49 5 19 15 0.06 169 0 0 5 40 1 12 17 50.1 8 238 -82 5 26 53 5 53 9 5 22 49 5 57 12 0.06 170 0 0 6 17 45 12 17 51.3 7 238 -82 6 4 39 6 30 52 6 0 35 6 34 55 0.06 171 0 0 6 55 14 12 17 52.4 6 238 -82 6 42 9 7 8 19 6 38 6 7 12 21 0.07 172 0 0 7 32 25 12 17 53.2 4 238 -82 7 19 21 7 45 28 7 15 19 7 49 31 0.08 173 0 0 8 9 18 12 17 53.8 3 239 -81 7 56 16 8 22 20 7 52 14 8 26 22 0.09 174 0 0 8 45 51 12 17 54.2 2 239 -80 8 32 51 8 58 52 8 28 49 9 2 53 0.13 175 0 0 9 22 5 12 17 54.5 1 239 -80 9 9 6 9 35 4 9 5 5 9 39 5 0.23 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 298-197319 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 22 30.0558 DE: -30 30 59.744 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 22 30.0557 DE: -30 30 59.744 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.2 * B mag [mag]: 12.0 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (151) Abundantia asteroid class: approx. diameter [km]: 41 approx. diameter ["]: 0.024 distance from Earth [AU]: 2.32440 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#62 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", 0.002", 93.958° remarks: * orbital elements for (151)Abundantia : Mean anomaly = 122.6909937968 deg Arg. of pericenter = 132.4386441144 deg Long. of node = 38.7333076817 deg Inclination = 6.4313193085 deg Eccentricity = 0.0357919837 Semimajor axis = 2.5917661255 AU Perihelion dist = 2.4990016744 AU Mag: H = 9.20, G = 0.15 Epoch of elements : MJD 60573.50713245 TDT (2024 Sep 20.5071) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#622023Apr24,2.94,2024,9,20,12.171192,0.003747,-0.017773,7.670709,1.690970,0.005561,0.000323,0.000000,0.000000 93.5778,-30.5060,-4.26,0.78,False UCAC4 298-197319,18.37501552,-30.5165956,12.01,11.19,10.75,0.1,0,,18.40152136,-30.5060047,3.08,3.07,0,0,0 151,Abundantia,14.20,40.919,2.3244,0,0,2.246,6.40,,2.0,0 0,122.5712,2024,9,20,132.4386,38.7333,6.4313,0.03579,2.59177,2.49900,9.19,5.0,0.15 1.155,0.0107,0.0023,94,0.0038,Known errors,0.56,0,-1,-1 20240920_197319,60140.57 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:47 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org