IOTA/IOTA-ES occultation update for (1154) Astronomia / UCAC4 325-198498 event on 2023 Jul 03, 21:52 UT Visible from Africa Summary ------- On 2023 Jul 03 UT, the 61.1 km diameter asteroid (1154) Astronomia will occult a 11.4 mag star in the constellation Sagittarius for observers along a path across Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.47 mag to 14.86 mag (the magnitude of the asteroid) for at most 5.100 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: 2023 Jul 03, 21:48 - 2023 Jul 03, 21:56 * geocentric midpoint of event [JD]: 2460129.41131659 * magnitude of target star: 11.44 * magnitude drop [mag]: 3.47 * estimated maximum duration [s]: 5.100 * Moon: 99 % sunlit, 4° distance * Sun: 176° distance * rough path description: Africa The occultation path -------------------- * approximate projected width [km]: 143 * 1 sigma uncertainty interval [path widths]: +/- 0.21 * 1 sigma uncertainty interval [seconds]: +/- 3.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.025, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.025", 0.007", 89°) * approx speed of asteroid's shadow [km/s]: 11.9836 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 325-198498 by 1154 Astronomia on 2023 Jul 3 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 - 26 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 44 45 24 .... - 25 0 0 45 23 24 21 56 2.9 0 127 -4 .. .. .. 44 34 44 .. .. .. 44 14 21 .... - 24 0 0 44 52 22 21 56 2.6 1 128 -5 45 42 9 44 4 26 46 4 10 43 44 21 -1.08 - 23 0 0 44 22 25 21 56 2.1 2 129 -6 45 11 26 43 35 10 45 33 6 43 15 21 -1.54 - 22 0 0 43 53 32 21 56 1.3 3 129 -7 44 41 50 43 6 57 45 3 10 42 47 23 -1.73 - 21 0 0 43 25 43 21 56 0.3 4 130 -8 44 13 20 42 39 44 44 34 21 42 20 25 -1.84 - 20 0 0 42 58 57 21 55 58.9 5 131 -9 43 45 56 42 13 32 44 6 39 41 54 26 -1.90 - 19 0 0 42 33 12 21 55 57.3 5 131 -9 43 19 36 41 48 20 43 40 2 41 29 27 -1.95 - 18 0 0 42 8 29 21 55 55.5 6 132 -10 42 54 19 41 24 7 43 14 30 41 5 27 -1.98 - 17 0 0 41 44 47 21 55 53.3 7 133 -11 42 30 5 41 0 53 42 50 2 40 42 25 -2.00 - 16 0 0 41 22 5 21 55 51.0 8 133 -12 42 6 54 40 38 38 42 26 37 40 20 21 -2.02 - 15 0 0 41 0 23 21 55 48.4 9 134 -13 41 44 44 40 17 22 42 4 15 39 59 14 -2.04 - 14 0 0 40 39 40 21 55 45.6 9 135 -13 41 23 35 39 57 3 41 42 54 39 39 5 -2.05 - 13 0 0 40 19 56 21 55 42.5 10 135 -14 41 3 27 39 37 41 41 22 34 39 19 52 -2.06 - 12 0 0 40 1 10 21 55 39.2 11 136 -15 40 44 18 39 19 16 41 3 15 39 1 36 -2.07 - 11 0 0 39 43 22 21 55 35.7 12 137 -16 40 26 9 39 1 47 40 44 55 38 44 15 -2.07 - 10 0 0 39 26 31 21 55 32.0 12 138 -16 40 8 58 38 45 15 40 27 35 38 27 51 -2.08 - 9 0 0 39 10 38 21 55 28.2 13 138 -17 39 52 45 38 29 39 40 11 14 38 12 21 -2.08 - 8 0 0 38 55 41 21 55 24.1 14 139 -18 39 37 31 38 14 58 39 55 52 37 57 47 -2.09 - 7 0 0 38 41 40 21 55 19.8 15 140 -18 39 23 14 38 1 12 39 41 28 37 44 7 -2.09 - 6 0 0 38 28 36 21 55 15.3 15 140 -19 39 9 55 37 48 22 39 28 2 37 31 22 -2.09 - 5 0 0 38 16 27 21 55 10.7 16 141 -20 38 57 33 37 36 26 39 15 34 37 19 32 -2.10 - 4 0 0 38 5 14 21 55 5.8 16 142 -20 38 46 7 37 25 24 39 4 2 37 8 35 -2.10 - 3 0 0 37 54 56 21 55 0.9 17 143 -21 38 35 37 37 15 17 38 53 27 36 58 32 -2.10 - 2 0 0 37 45 33 21 54 55.7 18 143 -21 38 26 3 37 6 3 38 43 48 36 49 22 -2.10 - 1 0 0 37 37 4 21 54 50.4 18 144 -22 38 17 25 36 57 44 38 35 6 36 41 6 -2.11 0 0 0 37 29 30 21 54 45.0 19 145 -22 38 9 43 36 50 17 38 27 20 36 33 43 -2.11 1 0 0 37 22 50 21 54 39.4 19 146 -23 38 2 55 36 43 44 38 20 29 36 27 13 -2.11 2 0 0 37 17 4 21 54 33.6 20 147 -23 37 57 3 36 38 4 38 14 33 36 21 35 -2.11 3 0 0 37 12 12 21 54 27.8 20 147 -24 37 52 5 36 33 17 38 9 33 36 16 50 -2.11 4 0 0 37 8 14 21 54 21.8 21 148 -24 37 48 2 36 29 23 38 5 28 36 12 58 -2.11 5 0 0 37 5 9 21 54 15.7 21 149 -25 37 44 54 36 26 22 38 2 18 36 9 58 -2.11 6 0 0 37 2 57 21 54 9.4 22 150 -25 37 42 39 36 24 13 38 0 2 36 7 50 -2.12 7 0 0 37 1 39 21 54 3.1 22 151 -26 37 41 19 36 22 56 37 58 41 36 6 34 -2.12 8 0 0 37 1 14 21 53 56.7 22 152 -26 37 40 53 36 22 32 37 58 15 36 6 10 -2.12 9 0 0 37 1 42 21 53 50.1 23 153 -26 37 41 21 36 23 0 37 58 43 36 6 39 -2.12 10 0 0 37 3 3 21 53 43.5 23 153 -26 37 42 43 36 24 21 38 0 5 36 7 59 -2.12 11 0 0 37 5 18 21 53 36.8 23 154 -27 37 44 59 36 26 34 38 2 22 36 10 11 -2.12 12 0 0 37 8 25 21 53 30.0 24 155 -27 37 48 9 36 29 38 38 5 33 36 13 15 -2.12 13 0 0 37 12 25 21 53 23.1 24 156 -27 37 52 13 36 33 36 38 9 39 36 17 11 -2.12 14 0 0 37 17 19 21 53 16.1 24 157 -27 37 57 11 36 38 25 38 14 39 36 21 58 -2.12 15 0 0 37 23 5 21 53 9.1 24 158 -28 38 3 3 36 44 6 38 20 33 36 27 38 -2.13 16 0 0 37 29 45 21 53 2.0 25 159 -28 38 9 49 36 50 40 38 27 22 36 34 9 -2.13 17 0 0 37 37 18 21 52 54.9 25 160 -28 38 17 29 36 58 6 38 35 5 36 41 32 -2.13 18 0 0 37 45 44 21 52 47.7 25 161 -28 38 26 3 37 6 24 38 43 43 36 49 47 -2.13 19 0 0 37 55 3 21 52 40.5 25 162 -28 38 35 32 37 15 35 38 53 16 36 58 55 -2.13 20 0 0 38 5 15 21 52 33.2 25 163 -28 38 45 54 37 25 38 39 3 43 37 8 54 -2.13 21 0 0 38 16 21 21 52 26.0 25 164 -28 38 57 11 37 36 33 39 15 5 37 19 45 -2.13 22 0 0 38 28 20 21 52 18.7 25 165 -28 39 9 23 37 48 21 39 27 22 37 31 28 -2.14 23 0 0 38 41 13 21 52 11.3 25 166 -28 39 22 29 38 1 2 39 40 35 37 44 3 -2.14 24 0 0 38 55 0 21 52 4.0 25 167 -28 39 36 31 38 14 35 39 54 43 37 57 32 -2.14 25 0 0 39 9 42 21 51 56.7 25 168 -28 39 51 28 38 29 2 40 9 48 38 11 52 -2.14 26 0 0 39 25 17 21 51 49.3 25 169 -27 40 7 21 38 44 22 40 25 48 38 27 6 -2.14 27 0 0 39 41 48 21 51 42.0 25 170 -27 40 24 9 39 0 36 40 42 45 38 43 13 -2.14 28 0 0 39 59 13 21 51 34.7 25 170 -27 40 41 54 39 17 43 41 0 39 39 0 13 -2.15 29 0 0 40 17 33 21 51 27.4 24 171 -27 41 0 35 39 35 44 41 19 30 39 18 6 -2.15 30 0 0 40 36 49 21 51 20.1 24 172 -27 41 20 14 39 54 39 41 39 18 39 36 53 -2.15 31 0 0 40 57 0 21 51 12.9 24 173 -26 41 40 49 40 14 29 42 0 5 39 56 34 -2.15 32 0 0 41 18 8 21 51 5.7 24 174 -26 42 2 22 40 35 13 42 21 49 40 17 9 -2.16 33 0 0 41 40 12 21 50 58.6 23 175 -26 42 24 53 40 56 52 42 44 33 40 38 38 -2.16 34 0 0 42 3 12 21 50 51.6 23 176 -25 42 48 23 41 19 27 43 8 16 41 1 2 -2.16 35 0 0 42 27 10 21 50 44.6 23 177 -25 43 12 51 41 42 57 43 32 58 41 24 21 -2.16 36 0 0 42 52 6 21 50 37.6 22 178 -24 43 38 19 42 7 23 43 58 41 41 48 35 -2.17 37 0 0 43 18 0 21 50 30.8 22 179 -24 44 4 47 42 32 45 44 25 26 42 13 45 -2.17 38 0 0 43 44 52 21 50 24.0 21 180 -23 44 32 16 42 59 4 44 53 12 42 39 50 -2.17 39 0 0 44 12 43 21 50 17.4 21 181 -23 45 0 46 43 26 20 45 22 0 43 6 52 -2.18 40 0 0 44 41 33 21 50 10.9 20 182 -22 45 30 19 43 54 32 45 51 52 43 34 49 -2.18 41 0 0 45 11 24 21 50 4.4 20 183 -22 46 0 55 44 23 43 46 22 49 44 3 44 -2.18 42 0 0 45 42 16 21 49 58.1 19 184 -21 46 32 34 44 53 53 46 54 51 44 33 37 -2.18 43 0 0 46 14 10 21 49 52.0 19 185 -20 47 5 18 45 25 2 47 27 59 45 4 29 -2.19 44 0 0 46 47 6 21 49 46.0 18 186 -20 47 39 9 45 57 10 48 2 15 45 36 18 -2.19 45 0 0 47 21 5 21 49 40.1 18 187 -19 48 14 6 46 30 19 48 37 39 46 9 6 -2.19 46 0 0 47 56 9 21 49 34.4 17 188 -18 48 50 12 47 4 28 49 14 14 46 42 54 -2.20 47 0 0 48 32 18 21 49 28.9 16 188 -18 49 27 27 47 39 39 49 52 1 47 17 42 -2.20 48 0 0 49 9 32 21 49 23.5 15 189 -17 50 5 53 48 15 52 50 31 2 47 53 31 -2.21 49 0 0 49 47 55 21 49 18.4 15 190 -16 50 45 32 48 53 7 51 11 18 48 30 21 -2.21 50 0 0 50 27 26 21 49 13.5 14 191 -15 51 26 26 49 31 27 51 52 51 49 8 13 -2.22 51 0 0 51 8 7 21 49 8.8 13 192 -15 52 8 36 50 10 52 52 35 46 49 47 8 -2.22 52 0 0 51 49 59 21 49 4.3 12 193 -14 52 52 6 50 51 23 53 20 4 50 27 7 -2.23 53 0 0 52 33 6 21 49 0.0 12 194 -13 53 36 59 51 33 0 54 5 49 51 8 11 -2.23 54 0 0 53 17 28 21 48 56.1 11 195 -12 54 23 17 52 15 47 54 53 6 51 50 21 -2.24 55 0 0 54 3 9 21 48 52.3 10 195 -11 55 11 6 52 59 43 55 41 58 52 33 38 -2.25 56 0 0 54 50 11 21 48 48.9 9 196 -10 56 0 28 53 44 52 56 32 31 53 18 4 -2.26 57 0 0 55 38 36 21 48 45.8 8 197 -9 56 51 29 54 31 14 57 24 53 54 3 40 -2.27 58 0 0 56 28 30 21 48 43.0 7 198 -8 57 44 16 55 18 52 58 19 12 54 50 28 -2.28 59 0 0 57 19 57 21 48 40.5 6 199 -7 58 38 58 56 7 48 59 15 37 55 38 29 -2.30 60 0 0 58 13 1 21 48 38.4 5 200 -6 59 35 44 56 58 5 60 14 24 56 27 47 -2.33 61 0 0 59 7 50 21 48 36.6 4 201 -5 60 34 47 57 49 48 61 15 48 57 18 23 -2.38 62 0 0 60 4 32 21 48 35.3 3 201 -4 61 36 23 58 43 0 62 20 15 58 10 22 -2.45 63 0 0 61 3 15 21 48 34.3 2 202 -3 62 40 55 59 37 46 .. .. .. 59 3 47 -2.63 64 0 0 62 4 15 21 48 33.9 1 203 -2 .. .. .. 60 34 13 .. .. .. 59 58 41 -3.40 65 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 61 32 27 .. .. .. 60 55 11 .... 66 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 61 53 24 .... Uncertainty in time = +/- 3 secs Prediction of 2023 May 14.2 Data for the target star ------------------------ * name: UCAC4 325-198498 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 06 54.0448 DE: -25 00 58.575 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 06 54.0448 DE: -25 00 58.575 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1154) Astronomia asteroid class: approx. diameter [km]: 61 approx. diameter ["]: 0.039 distance from Earth [AU]: 2.13750 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#59 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): 0.025", 0.007", 89.369° remarks: * orbital elements for (1154)Astronomia : Mean anomaly = 356.6491783513 deg Arg. of pericenter = 205.3784596299 deg Long. of node = 82.4791194295 deg Inclination = 4.5323934313 deg Eccentricity = 0.0703906218 Semimajor axis = 3.3902052521 AU Perihelion dist = 3.1515665964 AU Mag: H = 10.50, G = 0.15 Epoch of elements : MJD 60128.91118055 TDT (2023 Jul 03.9112) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#592023Apr24,5.10,2023,7,3,21.871598,-0.205864,0.880523,-6.586289,-1.539823,-0.000394,0.000197,0.000001,0.000000 37.3537,-24.9797,-146.99,22.92,False UCAC4 325-198498,19.11501244,-25.0162708,0.00,11.44,0.00,0.0,0,,19.13924468,-24.9797399,3.46,0.00,0,0,0 1154,Astronomia,14.86,61.1,2.1375,0,0,-1.992,-6.33,,3.0,0 0,356.5053,2023,7,3,205.3785,82.4791,4.5324,0.07039,3.39021,3.15157,10.52,5.0,0.15 1.215,0.0250,0.0067,89,0.0085,Known errors,-1.00,-1,-1,-1 20230703_198498,60078.17 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 May 14, 03:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org