IOTA/IOTA-ES occultation update for (11) Parthenope / UCAC4 365-089384 event on 2023 Apr 16, 21:24 UT Visible from China, India, Africa Summary ------- On 2023 Apr 16 UT, the 150.9 km diameter asteroid (11) Parthenope will occult a 10.4 mag star in the constellation Ophiuchus for observers along a path across China, India, Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.92 mag to 10.74 mag (the magnitude of the asteroid) for at most 58.400 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 Apr 16, 20:52 - 2023 Apr 16, 21:52 * geocentric midpoint of event [JD]: 2460051.39059050 * magnitude of target star: 10.42 * magnitude drop [mag]: 0.92 * estimated maximum duration [s]: 58.400 * Moon: 14 % sunlit, 82° distance * Sun: 125° distance * rough path description: China, India, Africa The occultation path -------------------- * approximate projected width [km]: 216 * 1 sigma uncertainty interval [path widths]: +/- 0.14 * 1 sigma uncertainty interval [seconds]: +/- 8.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.020, +/- 0.015) * 1 sigma uncertainty ellipse (major, minor, PA): (0.020", 0.015", 99°) * approx speed of asteroid's shadow [km/s]: 2.5839 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 365-089384 by 11 Parthenope on 2023 Apr 16 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 20 0 0 19 45 23 20 53 48.4 0 108 -50 18 46 27 20 45 23 18 30 41 21 1 47 .... 21 0 0 19 27 7 20 53 49.3 1 109 -51 18 28 18 20 26 59 18 12 35 20 43 21 -0.52 22 0 0 19 9 30 20 53 51.3 2 109 -52 18 10 49 20 9 14 17 55 7 20 25 34 -0.70 23 0 0 18 52 32 20 53 54.4 3 109 -53 17 53 57 19 52 8 17 38 18 20 8 26 -0.78 24 0 0 18 36 13 20 53 58.5 4 110 -54 17 37 46 19 35 43 17 22 8 19 51 59 -0.82 25 0 0 18 20 36 20 54 3.8 5 110 -54 17 22 14 19 20 0 17 6 38 19 36 14 -0.85 26 0 0 18 5 40 20 54 10.1 6 110 -55 17 7 23 19 4 57 16 51 49 19 21 10 -0.87 27 0 0 17 51 25 20 54 17.6 7 111 -56 16 53 14 18 50 38 16 37 41 19 6 49 -0.89 28 0 0 17 37 53 20 54 26.1 8 111 -57 16 39 47 18 37 1 16 24 15 18 53 11 -0.90 29 0 0 17 25 5 20 54 35.7 9 111 -58 16 27 2 18 24 9 16 11 31 18 40 17 -0.91 30 0 0 17 13 0 20 54 46.5 10 112 -58 16 15 1 18 12 0 15 59 31 18 28 8 -0.92 31 0 0 17 1 40 20 54 58.4 11 112 -59 16 3 44 18 0 37 15 48 15 18 16 44 -0.93 32 0 0 16 51 5 20 55 11.4 12 112 -60 15 53 12 17 50 0 15 37 43 18 6 6 -0.94 33 0 0 16 41 17 20 55 25.5 13 113 -60 15 43 25 17 40 9 15 27 57 17 56 14 -0.95 34 0 0 16 32 14 20 55 40.7 14 113 -61 15 34 24 17 31 5 15 18 56 17 47 10 -0.95 35 0 0 16 24 0 20 55 57.0 15 114 -61 15 26 10 17 22 50 15 10 42 17 38 54 -0.96 36 0 0 16 16 33 20 56 14.5 16 114 -62 15 18 43 17 15 23 15 3 16 17 31 27 -0.96 37 0 0 16 9 54 20 56 33.1 17 114 -62 15 12 4 17 8 45 14 56 37 17 24 50 -0.97 38 0 0 16 4 5 20 56 52.9 18 115 -63 15 6 14 17 2 57 14 50 47 17 19 2 -0.98 39 0 0 15 59 6 20 57 13.7 19 115 -63 15 1 14 16 58 0 14 45 46 17 14 5 -0.98 40 0 0 15 54 58 20 57 35.7 20 116 -63 14 57 3 16 53 54 14 41 35 17 10 0 -0.99 41 0 0 15 51 41 20 57 58.8 21 116 -64 14 53 44 16 50 40 14 38 14 17 6 47 -0.99 42 0 0 15 49 16 20 58 23.0 22 117 -64 14 51 15 16 48 19 14 35 45 17 4 27 -1.00 43 0 0 15 47 44 20 58 48.4 23 117 -64 14 49 39 16 46 51 14 34 7 17 3 0 -1.00 44 0 0 15 47 5 20 59 14.8 24 118 -64 14 48 55 16 46 17 14 33 22 17 2 28 -1.00 45 0 0 15 47 21 20 59 42.4 25 118 -64 14 49 5 16 46 39 14 33 31 17 2 51 -1.01 46 0 0 15 48 31 21 0 11.1 26 119 -64 14 50 9 16 47 56 14 34 33 17 4 10 -1.01 47 0 0 15 50 36 21 0 40.9 27 119 -64 14 52 8 16 50 9 14 36 30 17 6 25 -1.02 48 0 0 15 53 38 21 1 11.8 28 120 -64 14 55 2 16 53 19 14 39 22 17 9 38 -1.02 49 0 0 15 57 37 21 1 43.7 29 121 -63 14 58 52 16 57 26 14 43 10 17 13 48 -1.02 50 0 0 16 2 33 21 2 16.8 30 121 -63 15 3 39 17 2 32 14 47 55 17 18 57 -1.03 51 0 0 16 8 28 21 2 50.9 31 122 -63 15 9 23 17 8 37 14 53 36 17 25 4 -1.03 52 0 0 16 15 21 21 3 26.2 31 123 -62 15 16 6 17 15 42 15 0 16 17 32 12 -1.03 53 0 0 16 23 14 21 4 2.4 32 123 -62 15 23 47 17 23 47 15 7 54 17 40 21 -1.04 54 0 0 16 32 6 21 4 39.7 33 124 -61 15 32 27 17 32 53 15 16 31 17 49 30 -1.04 55 0 0 16 42 0 21 5 18.1 34 125 -61 15 42 8 17 43 0 15 26 8 17 59 41 -1.04 56 0 0 16 52 55 21 5 57.4 35 126 -60 15 52 49 17 54 10 15 36 46 18 10 55 -1.04 57 0 0 17 4 52 21 6 37.7 36 127 -60 16 4 31 18 6 22 15 48 24 18 23 12 -1.05 58 0 0 17 17 51 21 7 19.1 36 128 -59 16 17 15 18 19 38 16 1 4 18 36 33 -1.05 59 0 0 17 31 54 21 8 1.4 37 129 -58 16 31 1 18 33 58 16 14 45 18 50 57 -1.05 60 0 0 17 47 0 21 8 44.6 38 130 -57 16 45 49 18 49 22 16 29 29 19 6 26 -1.05 61 0 0 18 3 9 21 9 28.7 38 131 -56 17 1 41 19 5 51 16 45 16 19 23 1 -1.05 62 0 0 18 20 23 21 10 13.7 39 132 -56 17 18 36 19 23 25 17 2 6 19 40 40 -1.05 63 0 0 18 38 42 21 10 59.6 40 133 -55 17 36 35 19 42 5 17 20 0 19 59 26 -1.05 64 0 0 18 58 6 21 11 46.4 40 134 -54 17 55 38 20 1 50 17 38 58 20 19 17 -1.05 65 0 0 19 18 35 21 12 33.9 41 136 -53 18 15 46 20 22 42 17 59 0 20 40 15 -1.05 66 0 0 19 40 10 21 13 22.2 41 137 -52 18 36 58 20 44 40 18 20 6 21 2 20 -1.05 67 0 0 20 2 50 21 14 11.2 42 138 -51 18 59 15 21 7 44 18 42 17 21 25 31 -1.05 68 0 0 20 26 35 21 15 0.9 42 140 -50 19 22 37 21 31 55 19 5 33 21 49 49 -1.05 69 0 0 20 51 26 21 15 51.2 43 141 -49 19 47 3 21 57 12 19 29 53 22 15 13 -1.05 70 0 0 21 17 23 21 16 42.1 43 143 -47 20 12 34 22 23 35 19 55 18 22 41 43 -1.04 71 0 0 21 44 24 21 17 33.6 43 144 -46 20 39 10 22 51 4 20 21 46 23 9 20 -1.04 72 0 0 22 12 30 21 18 25.6 44 146 -45 21 6 50 23 19 38 20 49 19 23 38 2 -1.04 73 0 0 22 41 41 21 19 18.0 44 148 -44 21 35 33 23 49 17 21 17 55 24 7 50 -1.04 74 0 0 23 11 55 21 20 10.8 44 149 -43 22 5 19 24 20 1 21 47 34 24 38 41 -1.03 75 0 0 23 43 12 21 21 3.9 44 151 -42 22 36 7 24 51 48 22 18 15 25 10 37 -1.03 76 0 0 24 15 30 21 21 57.3 44 153 -40 23 7 57 25 24 37 22 49 57 25 43 35 -1.03 77 0 0 24 48 50 21 22 50.9 44 154 -39 23 40 48 25 58 28 23 22 40 26 17 34 -1.02 78 0 0 25 23 10 21 23 44.6 44 156 -38 24 14 38 26 33 19 23 56 22 26 52 34 -1.02 79 0 0 25 58 28 21 24 38.3 44 158 -37 24 49 26 27 9 9 24 31 2 27 28 33 -1.02 80 0 0 26 34 43 21 25 32.0 44 160 -36 25 25 10 27 45 56 25 6 39 28 5 29 -1.01 81 0 0 27 11 53 21 26 25.7 44 161 -34 26 1 50 28 23 38 25 43 11 28 43 20 -1.01 82 0 0 27 49 56 21 27 19.1 43 163 -33 26 39 23 29 2 13 26 20 36 29 22 4 -1.00 83 0 0 28 28 50 21 28 12.4 43 165 -32 27 17 47 29 41 40 26 58 52 30 1 40 -1.00 84 0 0 29 8 33 21 29 5.2 43 166 -31 27 57 0 30 21 57 27 37 57 30 42 6 -1.00 85 0 0 29 49 5 21 29 57.7 42 168 -29 28 37 0 31 3 0 28 17 49 31 23 19 -0.99 86 0 0 30 30 20 21 30 49.7 42 170 -28 29 17 45 31 44 49 28 58 26 32 5 17 -0.99 87 0 0 31 12 18 21 31 41.2 41 171 -27 29 59 13 32 27 18 29 39 46 32 47 55 -0.98 88 0 0 31 54 55 21 32 32.0 41 173 -25 30 41 20 33 10 27 30 21 46 33 31 13 -0.98 89 0 0 32 38 8 21 33 22.1 40 175 -24 31 24 4 33 54 12 31 4 22 34 15 7 -0.97 90 0 0 33 21 55 21 34 11.4 39 176 -23 32 7 22 34 38 30 31 47 33 34 59 33 -0.97 91 0 0 34 6 12 21 34 59.9 39 178 -22 32 51 11 35 23 17 32 31 14 35 44 30 -0.97 92 0 0 34 50 57 21 35 47.4 38 179 -21 33 35 28 36 8 31 33 15 24 36 29 52 -0.96 93 0 0 35 36 5 21 36 33.9 37 181 -19 34 20 9 36 54 9 33 59 58 37 15 38 -0.96 94 0 0 36 21 34 21 37 19.4 37 182 -18 35 5 12 37 40 7 34 44 55 38 1 44 -0.96 95 0 0 37 7 21 21 38 3.8 36 183 -17 35 50 33 38 26 20 35 30 9 38 48 5 -0.95 96 0 0 37 53 21 21 38 47.1 35 185 -16 36 36 10 39 12 47 36 15 39 39 34 40 -0.95 97 0 0 38 39 32 21 39 29.1 34 186 -15 37 21 57 39 59 24 37 1 21 40 21 24 -0.95 98 0 0 39 25 51 21 40 9.9 33 187 -13 38 7 53 40 46 7 37 47 11 41 8 14 -0.94 99 0 0 40 12 13 21 40 49.4 32 189 -12 38 53 54 41 32 53 38 33 7 41 55 6 -0.94 100 0 0 40 58 37 21 41 27.6 31 190 -11 39 39 58 42 19 38 39 19 5 42 41 58 -0.94 101 0 0 41 44 57 21 42 4.4 30 191 -10 40 25 59 43 6 20 40 5 2 43 28 46 -0.94 102 0 0 42 31 12 21 42 39.9 30 192 -9 41 11 56 43 52 55 40 50 55 44 15 27 -0.94 103 0 0 43 17 18 21 43 14.0 29 193 -8 41 57 46 44 39 20 41 36 40 45 1 57 -0.93 104 0 0 44 3 13 21 43 46.7 28 194 -7 42 43 25 45 25 32 42 22 16 45 48 14 -0.93 105 0 0 44 48 53 21 44 18.1 27 196 -6 43 28 51 46 11 28 43 7 38 46 34 15 -0.93 106 0 0 45 34 16 21 44 48.0 26 197 -5 44 14 1 46 57 6 43 52 45 47 19 57 -0.93 107 0 0 46 19 19 21 45 16.6 25 198 -4 44 58 53 47 42 22 44 37 33 48 5 18 -0.93 108 0 0 47 4 0 21 45 43.7 24 199 -3 45 43 23 48 27 15 45 22 1 48 50 14 -0.93 109 0 0 47 48 15 21 46 9.5 23 200 -2 46 27 30 49 11 41 46 6 6 49 34 44 -0.93 110 0 0 48 32 4 21 46 34.0 22 201 -1 47 11 11 49 55 39 46 49 45 50 18 44 -0.93 111 0 0 49 15 24 21 46 57.1 21 202 0 47 54 24 50 39 7 47 32 57 51 2 14 -0.93 112 0 0 49 58 13 21 47 19.0 20 203 1 48 37 8 51 22 2 48 15 40 51 45 12 -0.93 113 0 0 50 40 29 21 47 39.5 19 204 2 49 19 21 52 4 23 48 57 51 52 27 34 -0.93 114 0 0 51 22 11 21 47 58.8 18 205 2 50 1 0 52 46 8 49 39 30 53 9 20 -0.93 115 0 0 52 3 16 21 48 16.9 17 206 3 50 42 5 53 27 16 50 20 35 53 50 29 -0.93 116 0 0 52 43 45 21 48 33.8 17 206 4 51 22 33 54 7 45 51 1 3 54 30 58 -0.93 117 0 0 53 23 34 21 48 49.5 16 207 5 52 2 25 54 47 34 51 40 55 55 10 47 -0.93 118 0 0 54 2 45 21 49 4.1 15 208 6 52 41 38 55 26 42 52 20 9 55 49 55 -0.93 119 0 0 54 41 14 21 49 17.7 14 209 6 53 20 11 56 5 8 52 58 44 56 28 20 -0.94 120 0 0 55 19 3 21 49 30.2 13 210 7 53 58 5 56 42 51 53 36 39 57 6 2 -0.94 121 0 0 55 56 9 21 49 41.7 12 211 8 54 35 18 57 19 51 54 13 54 57 43 1 -0.94 122 0 0 56 32 32 21 49 52.3 11 212 8 55 11 49 57 56 7 54 50 27 58 19 15 -0.94 123 0 0 57 8 13 21 50 1.9 11 213 9 55 47 38 58 31 39 55 26 18 58 54 44 -0.94 124 0 0 57 43 9 21 50 10.7 10 214 9 56 22 45 59 6 25 56 1 28 59 29 28 -0.94 125 0 0 58 17 22 21 50 18.6 9 215 10 56 57 9 59 40 27 56 35 55 60 3 26 -0.95 126 0 0 58 50 51 21 50 25.8 8 216 11 57 30 50 60 13 44 57 9 39 60 36 39 -0.95 127 0 0 59 23 37 21 50 32.1 7 216 11 58 3 48 60 46 15 57 42 41 61 9 7 -0.95 128 0 0 59 55 38 21 50 37.8 7 217 12 58 36 3 61 18 2 58 15 0 61 40 49 -0.95 129 0 0 60 26 55 21 50 42.7 6 218 12 59 7 36 61 49 3 58 46 36 62 11 46 -0.96 130 0 0 60 57 28 21 50 47.0 5 219 13 59 38 25 62 19 20 59 17 30 62 41 58 -0.96 131 0 0 61 27 19 21 50 50.7 5 220 13 60 8 32 62 48 52 59 47 41 63 11 25 -0.96 132 0 0 61 56 25 21 50 53.8 4 221 14 60 37 56 63 17 40 60 17 10 63 40 8 -0.97 133 0 0 62 24 49 21 50 56.3 3 222 14 61 6 39 63 45 44 60 45 57 64 8 7 -0.97 134 0 0 62 52 31 21 50 58.3 3 223 14 61 34 39 64 13 5 61 14 3 64 35 22 -0.98 135 0 0 63 19 31 21 50 59.8 2 224 15 62 1 59 64 39 44 61 41 27 65 1 54 -0.99 136 0 0 63 45 49 21 51 0.9 1 225 15 62 28 37 65 5 40 62 8 11 65 27 45 -1.01 137 0 0 64 11 26 21 51 1.5 1 225 16 62 54 36 .. .. .. 62 34 15 .. .. .. -1.06 138 0 0 64 36 23 21 51 1.7 0 226 16 63 19 54 .. .. .. 62 59 39 .. .. .. -1.53 139 0 0 .. .. .... .. .. .. .. .. .. 63 44 34 .. .. .. 63 24 24 .. .. .. .... Uncertainty in time = +/- 9 secs Prediction of 2023 Mar 1.1 Data for the target star ------------------------ * name: UCAC4 365-089384 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 24 08.9579 DE: -17 11 44.377 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 24 08.9580 DE: -17 11 44.377 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 10.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (11) Parthenope asteroid class: ShapeModel approx. diameter [km]: 151 approx. diameter ["]: 0.125 distance from Earth [AU]: 1.66990 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#124 date of fit: 2023 Feb 07 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): 0.020", 0.015", 99.218° remarks: * orbital elements for (11)Parthenope : Mean anomaly = 290.9005059959 deg Arg. of pericenter = 195.7542644148 deg Long. of node = 125.5194646159 deg Inclination = 4.6313731815 deg Eccentricity = 0.0993940807 Semimajor axis = 2.4529887220 AU Perihelion dist = 2.2091761629 AU Mag: H = 6.73, G = 0.15 Epoch of elements : MJD 60050.89173611 TDT (2023 Apr 16.8917) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1242023Feb07,58.40,2023,4,16,21.374172,-0.302992,0.648662,1.321327,0.617381,-0.004589,-0.000052,0.000001,0.000000 96.0035,-17.2182,-140.67,10.27,False UCAC4 365-089384,17.40248830,-17.1956603,0.00,10.42,0.00,0.0,4,,17.42504021,-17.2181794,0.92,0.00,0,0,0 11,Parthenope,10.74,150.9,1.6699,0,0,0.485,3.25,,8.4,0 0,290.6717,2023,4,16,195.7543,125.5195,4.6314,0.09939,2.45299,2.20918,6.73,5.0,0.15 1.135,0.0197,0.0153,99,0.0168,Known errors,-1.00,-1,-1,-1 20230416_089384,60004.05 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Mar 01, 01:17 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org