IOTA/IOTA-ES occultation update for (11) Parthenope / UCAC4 368-086185 event on 2023 May 15, 03:27 UT Visible from Africa, South America, Central America Summary ------- On 2023 May 15 UT, the 150.9 km diameter asteroid (11) Parthenope will occult a 11.7 mag star in the constellation Ophiuchus for observers along a path across Africa, South America, Central America. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.22 mag to 10.03 mag (the magnitude of the asteroid) for at most 22.590 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 May 15, 03:12 - 2023 May 15, 03:43 * geocentric midpoint of event [JD]: 2460079.64436237 * magnitude of target star: 11.66 * magnitude drop [mag]: 0.22 * estimated maximum duration [s]: 22.590 * Moon: 22 % sunlit, 99° distance * Sun: 153° distance * rough path description: Africa, South America, Central America Additional comments ------------------- low mag drop The occultation path -------------------- * approximate projected width [km]: 157 * 1 sigma uncertainty interval [path widths]: +/- 0.11 * 1 sigma uncertainty interval [seconds]: +/- 3.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.024, +/- 0.017) * 1 sigma uncertainty ellipse (major, minor, PA): (0.024", 0.017", 99°) * approx speed of asteroid's shadow [km/s]: 6.6808 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 368-086185 by 11 Parthenope on 2023 May 15 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 -112 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 21 25 29 .... -111 0 0 22 2 33 3 43 7.1 1 108 -23 22 47 49 21 17 28 22 58 5 21 7 18 .... -110 0 0 21 44 17 3 43 6.8 2 109 -24 22 29 33 20 59 11 22 39 50 20 49 1 -0.15 -109 0 0 21 25 54 3 43 6.2 3 109 -25 22 11 12 20 40 48 22 21 29 20 30 37 -0.21 -108 0 0 21 7 27 3 43 5.3 4 109 -26 21 52 46 20 22 20 22 3 2 20 12 9 -0.24 -107 0 0 20 48 54 3 43 4.0 5 110 -27 21 34 14 20 3 46 21 44 31 19 53 35 -0.26 -106 0 0 20 30 16 3 43 2.5 6 110 -28 21 15 37 19 45 8 21 25 54 19 34 57 -0.27 -105 0 0 20 11 34 3 43 0.8 7 110 -29 20 56 55 19 26 25 21 7 12 19 16 14 -0.28 -104 0 0 19 52 48 3 42 58.7 8 111 -30 20 38 10 19 7 39 20 48 27 18 57 27 -0.28 -103 0 0 19 33 59 3 42 56.3 9 111 -31 20 19 20 18 48 49 20 29 38 18 38 37 -0.29 -102 0 0 19 15 6 3 42 53.6 10 111 -32 20 0 28 18 29 56 20 10 45 18 19 44 -0.29 -101 0 0 18 56 11 3 42 50.7 10 112 -32 19 41 32 18 11 0 19 51 50 18 0 49 -0.29 -100 0 0 18 37 13 3 42 47.4 11 112 -33 19 22 35 17 52 3 19 32 52 17 41 51 -0.30 - 99 0 0 18 18 13 3 42 43.9 12 112 -34 19 3 35 17 33 3 19 13 52 17 22 51 -0.30 - 98 0 0 17 59 12 3 42 40.0 13 113 -35 18 44 33 17 14 2 18 54 51 17 3 50 -0.30 - 97 0 0 17 40 9 3 42 35.9 14 113 -36 18 25 31 16 54 59 18 35 48 16 44 48 -0.30 - 96 0 0 17 21 6 3 42 31.5 15 113 -37 18 6 27 16 35 57 18 16 45 16 25 45 -0.30 - 95 0 0 17 2 3 3 42 26.8 16 114 -38 17 47 23 16 16 54 17 57 40 16 6 42 -0.30 - 94 0 0 16 42 59 3 42 21.8 17 114 -39 17 28 19 15 57 51 17 38 36 15 47 40 -0.30 - 93 0 0 16 23 56 3 42 16.5 18 114 -40 17 9 16 15 38 49 17 19 33 15 28 37 -0.30 - 92 0 0 16 4 54 3 42 11.0 19 115 -41 16 50 13 15 19 47 17 0 30 15 9 36 -0.30 - 91 0 0 15 45 53 3 42 5.1 20 115 -42 16 31 11 15 0 47 16 41 28 14 50 37 -0.31 - 90 0 0 15 26 54 3 41 59.0 21 115 -42 16 12 11 14 41 49 16 22 28 14 31 39 -0.31 - 89 0 0 15 7 57 3 41 52.6 22 115 -43 15 53 13 14 22 53 16 3 29 14 12 43 -0.31 - 88 0 0 14 49 3 3 41 46.0 23 116 -44 15 34 18 14 4 0 15 44 34 13 53 50 -0.31 - 87 0 0 14 30 11 3 41 39.0 24 116 -45 15 15 25 13 45 9 15 25 40 13 35 0 -0.31 - 86 0 0 14 11 23 3 41 31.8 25 116 -46 14 56 35 13 26 22 15 6 50 13 16 13 -0.31 - 85 0 0 13 52 38 3 41 24.4 26 117 -47 14 37 49 13 7 39 14 48 4 12 57 30 -0.31 - 84 0 0 13 33 57 3 41 16.6 27 117 -48 14 19 7 12 49 0 14 29 22 12 38 51 -0.31 - 83 0 0 13 15 21 3 41 8.6 28 117 -49 14 0 29 12 30 25 14 10 43 12 20 16 -0.31 - 82 0 0 12 56 49 3 41 0.4 29 118 -49 13 41 56 12 11 55 13 52 10 12 1 46 -0.31 - 81 0 0 12 38 23 3 40 51.9 30 118 -50 13 23 28 11 53 30 13 33 41 11 43 22 -0.31 - 80 0 0 12 20 2 3 40 43.1 31 118 -51 13 5 5 11 35 11 13 15 18 11 25 3 -0.31 - 79 0 0 12 1 47 3 40 34.1 32 119 -52 12 46 48 11 16 57 12 57 1 11 6 50 -0.31 - 78 0 0 11 43 38 3 40 24.9 33 119 -53 12 28 37 10 58 50 12 38 50 10 48 43 -0.31 - 77 0 0 11 25 36 3 40 15.4 34 119 -53 12 10 33 10 40 49 12 20 45 10 30 43 -0.31 - 76 0 0 11 7 40 3 40 5.7 35 119 -54 11 52 36 10 22 56 12 2 47 10 12 50 -0.31 - 75 0 0 10 49 52 3 39 55.8 36 120 -55 11 34 45 10 5 9 11 44 56 9 55 4 -0.31 - 74 0 0 10 32 11 3 39 45.6 37 120 -56 11 17 2 9 47 31 11 27 13 9 37 26 -0.31 - 73 0 0 10 14 38 3 39 35.2 38 121 -56 10 59 27 9 30 0 11 9 37 9 19 55 -0.31 - 72 0 0 9 57 13 3 39 24.6 39 121 -57 10 42 0 9 12 37 10 52 10 9 2 33 -0.31 - 71 0 0 9 39 57 3 39 13.8 40 121 -58 10 24 42 8 55 23 10 34 51 8 45 19 -0.31 - 70 0 0 9 22 49 3 39 2.7 41 122 -59 10 7 32 8 38 17 10 17 40 8 28 14 -0.31 - 69 0 0 9 5 50 3 38 51.5 42 122 -59 9 50 31 8 21 21 10 0 39 8 11 18 -0.31 - 68 0 0 8 49 1 3 38 40.0 43 122 -60 9 33 40 8 4 34 9 43 47 7 54 32 -0.31 - 67 0 0 8 32 22 3 38 28.4 44 123 -60 9 16 58 7 47 57 9 27 5 7 37 55 -0.31 - 66 0 0 8 15 52 3 38 16.6 45 123 -61 9 0 26 7 31 29 9 10 32 7 21 28 -0.31 - 65 0 0 7 59 33 3 38 4.5 45 124 -62 8 44 4 7 15 12 8 54 10 7 5 12 -0.31 - 64 0 0 7 43 24 3 37 52.3 46 124 -62 8 27 53 6 59 6 8 37 58 6 49 6 -0.31 - 63 0 0 7 27 26 3 37 40.0 47 124 -63 8 11 52 6 43 10 8 21 57 6 33 11 -0.31 - 62 0 0 7 11 38 3 37 27.4 48 125 -63 7 56 2 6 27 25 8 6 7 6 17 26 -0.31 - 61 0 0 6 56 2 3 37 14.7 49 125 -64 7 40 24 6 11 51 7 50 28 6 1 53 -0.31 - 60 0 0 6 40 38 3 37 1.8 50 126 -64 7 24 57 5 56 29 7 35 0 5 46 32 -0.31 - 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6 0 0 - 1 10 44 3 23 31.0 67 228 -42 - 0 27 55 - 1 53 22 - 0 18 13 - 2 3 0 -0.30 - 5 0 0 - 1 11 52 3 23 16.1 66 229 -41 - 0 29 3 - 1 54 30 - 0 19 21 - 2 4 8 -0.30 - 4 0 0 - 1 12 42 3 23 1.2 65 230 -40 - 0 29 54 - 1 55 20 - 0 20 11 - 2 4 58 -0.30 - 3 0 0 - 1 13 14 3 22 46.4 65 232 -39 - 0 30 27 - 1 55 53 - 0 20 44 - 2 5 31 -0.30 - 2 0 0 - 1 13 29 3 22 31.8 64 233 -38 - 0 30 41 - 1 56 8 - 0 20 59 - 2 5 45 -0.30 - 1 0 0 - 1 13 26 3 22 17.2 63 234 -38 - 0 30 38 - 1 56 5 - 0 20 56 - 2 5 43 -0.30 0 0 0 - 1 13 5 3 22 2.6 62 235 -37 - 0 30 17 - 1 55 44 - 0 20 35 - 2 5 22 -0.30 1 0 0 - 1 12 27 3 21 48.2 62 236 -36 - 0 29 38 - 1 55 6 - 0 19 56 - 2 4 44 -0.30 2 0 0 - 1 11 30 3 21 33.9 61 237 -35 - 0 28 41 - 1 54 10 - 0 18 59 - 2 3 48 -0.30 3 0 0 - 1 10 16 3 21 19.7 60 238 -34 - 0 27 27 - 1 52 56 - 0 17 44 - 2 2 34 -0.30 4 0 0 - 1 8 44 3 21 5.6 59 238 -33 - 0 25 54 - 1 51 24 - 0 16 11 - 2 1 2 -0.30 5 0 0 - 1 6 54 3 20 51.6 58 239 -32 - 0 24 3 - 1 49 34 - 0 14 20 - 1 59 12 -0.30 6 0 0 - 1 4 46 3 20 37.7 57 240 -31 - 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0 9 53 3 17 49.4 46 246 -20 0 33 12 - 0 52 48 0 42 58 - 1 2 30 -0.30 20 0 0 - 0 3 35 3 17 37.5 45 246 -19 0 39 32 - 0 46 32 0 49 18 - 0 56 13 -0.31 21 0 0 0 3 1 3 17 25.8 44 246 -18 0 46 9 - 0 39 57 0 55 56 - 0 49 40 -0.31 22 0 0 0 9 54 3 17 14.3 43 247 -17 0 53 4 - 0 33 6 1 2 52 - 0 42 48 -0.31 23 0 0 0 17 6 3 17 2.9 42 247 -16 1 0 17 - 0 25 56 1 10 5 - 0 35 39 -0.31 24 0 0 0 24 34 3 16 51.7 41 247 -15 1 7 48 - 0 18 29 1 17 36 - 0 28 12 -0.31 25 0 0 0 32 21 3 16 40.7 41 247 -14 1 15 36 - 0 10 45 1 25 25 - 0 20 28 -0.31 26 0 0 0 40 25 3 16 29.9 40 248 -13 1 23 42 - 0 2 43 1 33 31 - 0 12 27 -0.31 27 0 0 0 48 46 3 16 19.3 39 248 -12 1 32 5 0 5 37 1 41 55 - 0 4 8 -0.31 28 0 0 0 57 24 3 16 8.9 38 248 -11 1 40 46 0 14 13 1 50 36 0 4 28 -0.31 29 0 0 1 6 20 3 15 58.7 37 248 -10 1 49 44 0 23 7 1 59 34 0 13 22 -0.31 30 0 0 1 15 34 3 15 48.7 36 248 -9 1 58 59 0 32 18 2 8 50 0 22 32 -0.31 31 0 0 1 25 4 3 15 39.0 35 249 -8 2 8 32 0 41 47 2 18 24 0 32 0 -0.31 32 0 0 1 34 52 3 15 29.4 34 249 -7 2 18 22 0 51 32 2 28 14 0 41 45 -0.31 33 0 0 1 44 56 3 15 20.0 33 249 -6 2 28 29 1 1 34 2 38 21 0 51 47 -0.31 34 0 0 1 55 18 3 15 10.9 32 249 -5 2 38 53 1 11 54 2 48 46 1 2 6 -0.31 35 0 0 2 5 57 3 15 2.0 31 249 -4 2 49 34 1 22 30 2 59 27 1 12 41 -0.31 36 0 0 2 16 52 3 14 53.3 30 249 -3 3 0 31 1 33 23 3 10 26 1 23 34 -0.31 37 0 0 2 28 4 3 14 44.9 29 249 -2 3 11 46 1 44 32 3 21 40 1 34 42 -0.31 38 0 0 2 39 32 3 14 36.7 28 250 -1 3 23 17 1 55 58 3 33 12 1 46 8 -0.31 39 0 0 2 51 17 3 14 28.7 27 250 0 3 35 4 2 7 40 3 45 0 1 57 50 -0.31 40 0 0 3 3 18 3 14 21.0 26 250 0 3 47 8 2 19 39 3 57 4 2 9 48 -0.31 41 0 0 3 15 35 3 14 13.5 25 250 1 3 59 28 2 31 53 4 9 25 2 22 2 -0.31 42 0 0 3 28 9 3 14 6.3 24 250 2 4 12 4 2 44 24 4 22 1 2 34 32 -0.31 43 0 0 3 40 58 3 13 59.4 23 250 3 4 24 56 2 57 11 4 34 54 2 47 18 -0.32 44 0 0 3 54 3 3 13 52.7 22 250 4 4 38 3 3 10 13 4 48 2 3 0 19 -0.32 45 0 0 4 7 23 3 13 46.3 21 250 5 4 51 27 3 23 31 5 1 26 3 13 37 -0.32 46 0 0 4 20 59 3 13 40.1 20 251 6 5 5 5 3 37 4 5 15 6 3 27 9 -0.32 47 0 0 4 34 51 3 13 34.2 19 251 7 5 18 59 3 50 53 5 29 0 3 40 57 -0.32 48 0 0 4 48 57 3 13 28.6 18 251 8 5 33 8 4 4 56 5 43 10 3 55 0 -0.32 49 0 0 5 3 18 3 13 23.3 17 251 9 5 47 32 4 19 15 5 57 35 4 9 18 -0.32 50 0 0 5 17 54 3 13 18.2 16 251 10 6 2 11 4 33 48 6 12 14 4 23 51 -0.32 51 0 0 5 32 45 3 13 13.4 15 251 11 6 17 4 4 48 36 6 27 8 4 38 38 -0.32 52 0 0 5 47 49 3 13 8.9 14 251 12 6 32 12 5 3 38 6 42 16 4 53 39 -0.32 53 0 0 6 3 8 3 13 4.8 13 251 13 6 47 33 5 18 54 6 57 38 5 8 54 -0.32 54 0 0 6 18 41 3 13 0.9 12 251 14 7 3 9 5 34 23 7 13 14 5 24 24 -0.32 55 0 0 6 34 27 3 12 57.3 11 252 15 7 18 58 5 50 7 7 29 4 5 40 6 -0.32 56 0 0 6 50 26 3 12 54.0 10 252 16 7 35 0 6 6 3 7 45 7 5 56 2 -0.32 57 0 0 7 6 39 3 12 51.0 9 252 17 7 51 15 6 22 13 8 1 23 6 12 12 -0.32 58 0 0 7 23 4 3 12 48.3 8 252 18 8 7 43 6 38 36 8 17 51 6 28 34 -0.32 59 0 0 7 39 42 3 12 45.9 7 252 20 8 24 24 6 55 11 8 34 33 6 45 8 -0.33 60 0 0 7 56 32 3 12 43.8 6 252 21 8 41 17 7 11 59 8 51 26 7 1 55 -0.33 61 0 0 8 13 34 3 12 42.0 5 252 22 8 58 22 7 28 58 9 8 32 7 18 54 -0.33 62 0 0 8 30 48 3 12 40.6 4 253 23 9 15 38 7 46 10 9 25 49 7 36 5 -0.33 63 0 0 8 48 14 3 12 39.5 3 253 24 9 33 6 8 3 32 9 43 17 7 53 27 -0.34 64 0 0 9 5 50 3 12 38.7 2 253 25 9 50 45 8 21 6 10 0 57 8 11 0 -0.34 65 0 0 9 23 37 3 12 38.2 1 253 26 10 8 35 8 38 51 10 18 47 8 28 44 -0.37 66 0 0 9 41 34 3 12 38.0 0 253 27 .. .. .. 8 56 45 .. .. .. 8 46 39 -1.25 Uncertainty in time = +/- 4 secs Prediction of 2023 Apr 29.2 Data for the target star ------------------------ * name: UCAC4 368-086185 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 17 30.8398 DE: -16 35 23.398 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 17 30.8398 DE: -16 35 23.398 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.7 * 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 ["]: 0.147 distance from Earth [AU]: 1.41130 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#125 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): 0.024", 0.017", 98.658° remarks: * orbital elements for (11)Parthenope : Mean anomaly = 298.1398843872 deg Arg. of pericenter = 195.7630162316 deg Long. of node = 125.5188793885 deg Inclination = 4.6313996550 deg Eccentricity = 0.0993853423 Semimajor axis = 2.4529465850 AU Perihelion dist = 2.2091596489 AU Mag: H = 6.73, G = 0.15 Epoch of elements : MJD 60079.14388889 TDT (2023 May 15.1439) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1252023Apr24,22.59,2023,5,15,3.464697,0.032530,0.283893,-3.746339,0.429011,-0.002451,-0.000375,0.000001,0.000000 -24.8600,-16.6160,127.12,18.79,False UCAC4 368-086185,17.29189994,-16.5898328,0.00,11.66,0.00,0.0,0,,17.31454552,-16.6159555,0.22,0.00,0,0,0 11,Parthenope,10.03,150.9,1.4113,0,0,-1.625,2.67,,8.4,0 0,298.1030,2023,5,15,195.7630,125.5189,4.6314,0.09939,2.45295,2.20916,6.73,5.0,0.15 1.113,0.0240,0.0167,99,0.0167,Known errors,-1.00,-1,-1,-1 20230515_086185,60063.18 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Apr 29, 04:26 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org