IOTA/IOTA-ES occultation update for (1154) Astronomia / TYC 6864-00325-1 event on 2023 Jul 17, 04:19 UT Visible from E Canada, USA Summary ------- On 2023 Jul 17 UT, the 61.1 km diameter asteroid (1154) Astronomia will occult a 11.2 mag star in the constellation Sagittarius for observers along a path across E Canada, USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.89 mag to 15.01 mag (the magnitude of the asteroid) for at most 5.320 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 17, 04:15 - 2023 Jul 17, 04:24 * geocentric midpoint of event [JD]: 2460142.68035734 * magnitude of target star: 11.15 * magnitude drop [mag]: 3.89 * estimated maximum duration [s]: 5.320 * Moon: 0 % sunlit, 174° distance * Sun: 168° distance * rough path description: E Canada, USA The occultation path -------------------- * approximate projected width [km]: 138 * 1 sigma uncertainty interval [path widths]: +/- 0.21 * 1 sigma uncertainty interval [seconds]: +/- 3.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.025, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.025", 0.007", 91°) * approx speed of asteroid's shadow [km/s]: 11.4940 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6864-00325-1 by 1154 Astronomia on 2023 Jul 17 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 -137 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 45 50 45 .. .. .. 45 31 3 .... -136 0 0 46 6 0 4 23 46.7 0 129 3 .. .. .. 45 18 14 .. .. .. 44 58 49 .... -135 0 0 45 33 44 4 23 46.4 1 129 2 46 22 32 44 46 40 46 43 25 44 27 31 -1.08 -134 0 0 45 2 28 4 23 45.9 2 130 1 45 50 31 44 16 4 46 11 5 43 57 10 -1.49 -133 0 0 44 32 11 4 23 45.0 3 131 1 45 19 33 43 46 24 45 39 47 43 27 45 -1.66 -132 0 0 44 2 52 4 23 43.9 4 132 0 44 49 35 43 17 41 45 9 32 42 59 16 -1.76 -131 0 0 43 34 32 4 23 42.5 5 132 -1 44 20 37 42 49 55 44 40 18 42 31 43 -1.82 -130 0 0 43 7 9 4 23 40.9 6 133 -2 43 52 40 42 23 4 44 12 4 42 5 5 -1.86 -129 0 0 42 40 44 4 23 38.9 6 134 -3 43 25 41 41 57 9 43 44 51 41 39 22 -1.89 -128 0 0 42 15 16 4 23 36.8 7 134 -4 42 59 42 41 32 10 43 18 38 41 14 33 -1.91 -127 0 0 41 50 45 4 23 34.3 8 135 -5 42 34 41 41 8 5 42 53 24 40 50 39 -1.93 -126 0 0 41 27 9 4 23 31.6 9 136 -5 42 10 38 40 44 55 42 29 8 40 27 40 -1.94 -125 0 0 41 4 30 4 23 28.7 10 136 -6 41 47 32 40 22 40 42 5 51 40 5 34 -1.96 -124 0 0 40 42 46 4 23 25.6 10 137 -7 41 25 23 40 1 19 41 43 31 39 44 22 -1.96 -123 0 0 40 21 57 4 23 22.2 11 138 -8 41 4 11 39 40 52 41 22 8 39 24 4 -1.97 -122 0 0 40 2 4 4 23 18.6 12 138 -9 40 43 55 39 21 19 41 1 42 39 4 38 -1.98 -121 0 0 39 43 4 4 23 14.8 13 139 -9 40 24 35 39 2 39 40 42 13 38 46 6 -1.98 -120 0 0 39 24 59 4 23 10.7 13 140 -10 40 6 10 38 44 52 40 23 40 38 28 26 -1.99 -119 0 0 39 7 49 4 23 6.5 14 141 -11 39 48 41 38 27 58 40 6 3 38 11 39 -1.99 -118 0 0 38 51 31 4 23 2.1 15 141 -12 39 32 7 38 11 57 39 49 21 37 55 44 -2.00 -117 0 0 38 36 8 4 22 57.5 15 142 -12 39 16 27 37 56 48 39 33 34 37 40 41 -2.00 -116 0 0 38 21 37 4 22 52.7 16 143 -13 39 1 41 37 42 31 39 18 42 37 26 30 -2.00 -115 0 0 38 7 59 4 22 47.7 17 144 -14 38 47 50 37 29 7 39 4 44 37 13 11 -2.01 -114 0 0 37 55 15 4 22 42.5 17 144 -15 38 34 52 37 16 34 38 51 40 37 0 43 -2.01 -113 0 0 37 43 22 4 22 37.2 18 145 -15 38 22 47 37 4 53 38 39 30 36 49 6 -2.01 -112 0 0 37 32 22 4 22 31.7 19 146 -16 38 11 36 36 54 3 38 28 14 36 38 20 -2.01 -111 0 0 37 22 14 4 22 26.1 19 147 -17 38 1 18 36 44 4 38 17 51 36 28 25 -2.01 -110 0 0 37 12 57 4 22 20.3 20 147 -17 37 51 52 36 34 56 38 8 22 36 19 21 -2.01 -109 0 0 37 4 33 4 22 14.4 20 148 -18 37 43 19 36 26 40 37 59 45 36 11 7 -2.02 -108 0 0 36 56 59 4 22 8.3 21 149 -19 37 35 38 36 19 13 37 52 1 36 3 44 -2.02 -107 0 0 36 50 18 4 22 2.1 21 150 -19 37 28 49 36 12 38 37 45 9 35 57 11 -2.02 -106 0 0 36 44 27 4 21 55.8 22 151 -20 37 22 53 36 6 53 37 39 10 35 51 28 -2.02 -105 0 0 36 39 27 4 21 49.3 22 152 -20 37 17 48 36 1 58 37 34 3 35 46 35 -2.02 -104 0 0 36 35 19 4 21 42.8 23 152 -21 37 13 36 35 57 53 37 29 49 35 42 32 -2.02 -103 0 0 36 32 1 4 21 36.1 23 153 -22 37 10 15 35 54 39 37 26 26 35 39 19 -2.02 -102 0 0 36 29 34 4 21 29.3 23 154 -22 37 7 45 35 52 15 37 23 55 35 36 56 -2.02 -101 0 0 36 27 58 4 21 22.5 24 155 -23 37 6 7 35 50 40 37 22 16 35 35 22 -2.02 -100 0 0 36 27 12 4 21 15.5 24 156 -23 37 5 20 35 49 55 37 21 29 35 34 37 -2.02 - 99 0 0 36 27 17 4 21 8.5 24 157 -24 37 5 24 35 50 0 37 21 33 35 34 43 -2.02 - 98 0 0 36 28 12 4 21 1.3 25 158 -24 37 6 20 35 50 55 37 22 29 35 35 37 -2.03 - 97 0 0 36 29 58 4 20 54.1 25 159 -24 37 8 6 35 52 40 37 24 16 35 37 21 -2.03 - 96 0 0 36 32 33 4 20 46.9 25 160 -25 37 10 44 35 55 14 37 26 55 35 39 54 -2.03 - 95 0 0 36 36 0 4 20 39.5 25 160 -25 37 14 13 35 58 37 37 30 25 35 43 17 -2.03 - 94 0 0 36 40 16 4 20 32.1 26 161 -25 37 18 33 36 2 50 37 34 46 35 47 29 -2.03 - 93 0 0 36 45 23 4 20 24.7 26 162 -26 37 23 44 36 7 53 37 40 0 35 52 30 -2.03 - 92 0 0 36 51 20 4 20 17.2 26 163 -26 37 29 47 36 13 46 37 46 4 35 58 21 -2.03 - 91 0 0 36 58 8 4 20 9.7 26 164 -26 37 36 40 36 20 28 37 53 0 36 5 1 -2.03 - 90 0 0 37 5 46 4 20 2.1 26 165 -27 37 44 25 36 28 0 38 0 48 36 12 30 -2.03 - 89 0 0 37 14 14 4 19 54.5 26 166 -27 37 53 1 36 36 21 38 9 27 36 20 49 -2.04 - 88 0 0 37 23 34 4 19 46.9 26 167 -27 38 2 29 36 45 32 38 18 59 36 29 57 -2.04 - 87 0 0 37 33 43 4 19 39.3 26 168 -27 38 12 48 36 55 33 38 29 22 36 39 54 -2.04 - 86 0 0 37 44 44 4 19 31.6 26 169 -27 38 23 58 37 6 24 38 40 37 36 50 42 -2.04 - 85 0 0 37 56 35 4 19 24.0 26 170 -28 38 36 1 37 18 5 38 52 44 37 2 19 -2.04 - 84 0 0 38 9 17 4 19 16.4 26 171 -28 38 48 55 37 30 36 39 5 43 37 14 45 -2.04 - 83 0 0 38 22 50 4 19 8.7 26 172 -28 39 2 41 37 43 57 39 19 35 37 28 1 -2.04 - 82 0 0 38 37 14 4 19 1.1 26 173 -28 39 17 19 37 58 9 39 34 19 37 42 8 -2.05 - 81 0 0 38 52 30 4 18 53.5 26 174 -28 39 32 49 38 13 10 39 49 56 37 57 4 -2.05 - 80 0 0 39 8 37 4 18 46.0 25 175 -28 39 49 12 38 29 2 40 6 26 38 12 50 -2.05 - 79 0 0 39 25 35 4 18 38.5 25 176 -28 40 6 28 38 45 45 40 23 49 38 29 26 -2.05 - 78 0 0 39 43 26 4 18 31.0 25 177 -28 40 24 37 39 3 19 40 42 6 38 46 53 -2.05 - 77 0 0 40 2 8 4 18 23.6 25 178 -27 40 43 38 39 21 43 41 1 16 39 5 11 -2.06 - 76 0 0 40 21 42 4 18 16.2 24 179 -27 41 3 33 39 40 59 41 21 20 39 24 19 -2.06 - 75 0 0 40 42 9 4 18 8.9 24 180 -27 41 24 22 40 1 5 41 42 19 39 44 17 -2.06 - 74 0 0 41 3 29 4 18 1.7 24 181 -27 41 46 4 40 22 3 42 4 11 40 5 7 -2.06 - 73 0 0 41 25 40 4 17 54.5 23 182 -27 42 8 41 40 43 53 42 26 59 40 26 47 -2.07 - 72 0 0 41 48 46 4 17 47.5 23 183 -27 42 32 12 41 6 34 42 50 41 40 49 19 -2.07 - 71 0 0 42 12 44 4 17 40.5 22 184 -26 42 56 38 41 30 7 43 15 20 41 12 43 -2.07 - 70 0 0 42 37 36 4 17 33.6 22 185 -26 43 21 59 41 54 32 43 40 54 41 36 57 -2.07 - 69 0 0 43 3 22 4 17 26.9 21 185 -26 43 48 16 42 19 50 44 7 24 42 2 4 -2.08 - 68 0 0 43 30 2 4 17 20.3 21 186 -25 44 15 28 42 46 0 44 34 51 42 28 2 -2.08 - 67 0 0 43 57 36 4 17 13.7 20 187 -25 44 43 37 43 13 3 45 3 16 42 54 53 -2.08 - 66 0 0 44 26 5 4 17 7.4 20 188 -24 45 12 43 43 40 59 45 32 38 43 22 36 -2.08 - 65 0 0 44 55 29 4 17 1.2 19 189 -24 45 42 45 44 9 48 46 2 58 43 51 11 -2.09 - 64 0 0 45 25 48 4 16 55.1 19 190 -23 46 13 46 44 39 30 46 34 17 44 20 40 -2.09 - 63 0 0 45 57 4 4 16 49.2 18 191 -23 46 45 44 45 10 6 47 6 35 44 51 0 -2.09 - 62 0 0 46 29 15 4 16 43.5 17 192 -22 47 18 42 45 41 36 47 39 54 45 22 15 -2.10 - 61 0 0 47 2 23 4 16 37.9 17 193 -22 47 52 39 46 14 1 48 14 13 45 54 22 -2.10 - 60 0 0 47 36 28 4 16 32.5 16 194 -21 48 27 36 46 47 20 48 49 33 46 27 23 -2.10 - 59 0 0 48 11 30 4 16 27.4 15 194 -21 49 3 33 47 21 33 49 25 56 47 1 18 -2.11 - 58 0 0 48 47 30 4 16 22.4 14 195 -20 49 40 32 47 56 41 50 3 21 47 36 6 -2.11 - 57 0 0 49 24 28 4 16 17.7 14 196 -19 50 18 33 48 32 44 50 41 51 48 11 48 -2.12 - 56 0 0 50 2 26 4 16 13.2 13 197 -19 50 57 37 49 9 44 51 21 26 48 48 25 -2.12 - 55 0 0 50 41 23 4 16 8.9 12 198 -18 51 37 45 49 47 39 52 2 7 49 25 57 -2.12 - 54 0 0 51 21 20 4 16 4.9 11 199 -17 52 18 59 50 26 30 52 43 56 50 4 23 -2.13 - 53 0 0 52 2 18 4 16 1.1 10 200 -16 53 1 18 51 6 18 53 26 55 50 43 45 -2.14 - 52 0 0 52 44 18 4 15 57.6 10 200 -16 53 44 46 51 47 3 54 11 4 51 24 1 -2.14 - 51 0 0 53 27 20 4 15 54.4 9 201 -15 54 29 23 52 28 45 54 56 25 52 5 14 -2.15 - 50 0 0 54 11 26 4 15 51.5 8 202 -14 55 15 11 53 11 25 55 43 2 52 47 22 -2.16 - 49 0 0 54 56 36 4 15 48.9 7 203 -13 56 2 11 53 55 3 56 30 56 53 30 26 -2.17 - 48 0 0 55 42 51 4 15 46.6 6 204 -12 56 50 27 54 39 40 57 20 10 54 14 26 -2.19 - 47 0 0 56 30 14 4 15 44.6 5 205 -11 57 40 0 55 25 16 58 10 48 54 59 23 -2.21 - 46 0 0 57 18 45 4 15 43.0 4 205 -10 58 30 55 56 11 52 59 2 53 55 45 18 -2.24 - 45 0 0 58 8 26 4 15 41.7 3 206 -9 59 23 14 56 59 28 59 56 31 56 32 9 -2.30 - 44 0 0 58 59 19 4 15 40.8 2 207 -8 60 17 1 57 48 6 60 51 48 57 19 59 -2.40 - 43 0 0 59 51 27 4 15 40.2 1 208 -8 .. .. .. 58 37 46 .. .. .. 58 8 46 -2.72 - 42 0 0 60 44 52 4 15 40.1 0 209 -7 .. .. .. 59 28 29 .. .. .. 58 58 33 -37.11 - 41 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 60 20 17 .. .. .. 59 49 19 .... Uncertainty in time = +/- 3 secs Prediction of 2023 May 29.0 Data for the target star ------------------------ * name: TYC 6864-00325-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 56 19.5700 DE: -25 30 58.605 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 56 19.5700 DE: -25 30 58.605 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.2 * 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]: 2.14950 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", 90.603° remarks: * orbital elements for (1154)Astronomia : Mean anomaly = 358.7399547694 deg Arg. of pericenter = 205.3832988225 deg Long. of node = 82.4792184202 deg Inclination = 4.5324121286 deg Eccentricity = 0.0703768179 Semimajor axis = 3.3901540715 AU Perihelion dist = 3.1515658158 AU Mag: H = 10.50, G = 0.15 Epoch of elements : MJD 60142.18020833 TDT (2023 Jul 17.1802) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#592023Apr24,5.32,2023,7,17,4.328576,-0.168612,0.880370,-6.371689,-1.220444,0.001080,0.000368,0.000001,0.000000 -75.2206,-25.4857,116.61,21.24,False TYC 6864-00325-1,18.93876945,-25.5162792,0.00,11.15,0.00,0.0,0,,18.96318637,-25.4857138,3.89,0.00,0,0,0 1154,Astronomia,15.01,61.1,2.1495,0,0,-1.924,-4.99,,3.0,0 0,358.7115,2023,7,17,205.3833,82.4792,4.5324,0.07038,3.39015,3.15157,10.50,5.0,0.15 1.208,0.0247,0.0067,91,0.0082,Known errors,-1.00,-1,-1,-1 20230717_0325-1,60092.98 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 May 28, 23:36 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org