IOTA/IOTA-ES occultation update for (503) Evelyn / UCAC4 548-008846 event on 2023 Nov 10, 13:30 UT Visible from New Zealand Summary ------- On 2023 Nov 10 UT, the 87.8 km diameter asteroid (503) Evelyn will occult a 12.4 mag star in the constellation Taurus for observers along a path across New Zealand. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.81 mag to 12.54 mag (the magnitude of the asteroid) for at most 10.120 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: 100 * date and approx. time of event: 2023 Nov 10, 13:25 - 2023 Nov 10, 13:36 * geocentric midpoint of event [JD]: 2460259.06321284 * magnitude of target star: 12.43 * magnitude drop [mag]: 0.81 * estimated maximum duration [s]: 10.120 * Moon: 8 % sunlit, 129° distance * Sun: 163° distance * rough path description: New Zealand Additional comments ------------------- low altitude The occultation path -------------------- * approximate projected width [km]: 222 * 1 sigma uncertainty interval [path widths]: +/- 0.05 * 1 sigma uncertainty interval [seconds]: +/- 2.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.001", 75°) * approx speed of asteroid's shadow [km/s]: 8.6773 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 548-008846 by 503 Evelyn on 2023 Nov 10 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 0 0 0 .. .. .... .. .. .. .. .. .. -59 37 29 .. .. .. -59 29 6 .. .. .. .... 0 0 0 .. .. .... .. .. .. .. .. .. -59 10 51 .. .. .. -59 2 33 .. .. .. .... 119 0 0 -60 4 51 13 35 47.8 0 47 -8 -58 44 32 .. .. .. -58 36 19 .. .. .. .... 120 0 0 -59 37 59 13 35 47.6 1 46 -9 -58 18 32 -61 3 41 -58 10 25 -61 13 14 1.37 121 0 0 -59 11 28 13 35 47.0 2 45 -10 -57 52 53 -60 36 6 -57 44 50 -60 45 31 1.75 122 0 0 -58 45 20 13 35 46.2 3 45 -10 -57 27 35 -60 8 55 -57 19 37 -60 18 13 1.93 123 0 0 -58 19 35 13 35 45.2 3 44 -11 -57 2 39 -59 42 10 -56 54 46 -59 51 20 2.03 124 0 0 -57 54 14 13 35 43.9 4 43 -12 -56 38 6 -59 15 51 -56 30 17 -59 24 54 2.10 125 0 0 -57 29 19 13 35 42.3 5 42 -12 -56 13 57 -58 49 59 -56 6 12 -58 58 55 2.14 126 0 0 -57 4 49 13 35 40.5 5 41 -13 -55 50 11 -58 24 34 -55 42 31 -58 33 24 2.18 127 0 0 -56 40 45 13 35 38.4 6 40 -13 -55 26 51 -57 59 37 -55 19 15 -58 8 21 2.21 128 0 0 -56 17 7 13 35 36.0 6 39 -14 -55 3 56 -57 35 9 -54 56 24 -57 43 46 2.23 129 0 0 -55 53 57 13 35 33.4 7 39 -15 -54 41 27 -57 11 10 -54 33 59 -57 19 41 2.24 130 0 0 -55 31 15 13 35 30.6 8 38 -15 -54 19 24 -56 47 40 -54 12 0 -56 56 6 2.26 131 0 0 -55 9 1 13 35 27.5 8 37 -16 -53 57 48 -56 24 40 -53 50 28 -56 33 0 2.27 132 0 0 -54 47 16 13 35 24.2 9 36 -16 -53 36 40 -56 2 10 -53 29 23 -56 10 26 2.28 133 0 0 -54 26 0 13 35 20.6 10 35 -17 -53 16 0 -55 40 12 -53 8 47 -55 48 22 2.29 134 0 0 -54 5 13 13 35 16.8 10 34 -17 -52 55 48 -55 18 44 -52 48 38 -55 26 49 2.29 135 0 0 -53 44 56 13 35 12.8 11 34 -18 -52 36 5 -54 57 48 -52 28 58 -55 5 48 2.30 136 0 0 -53 25 10 13 35 8.6 11 33 -18 -52 16 50 -54 37 23 -52 9 47 -54 45 19 2.30 137 0 0 -53 5 54 13 35 4.1 12 32 -19 -51 58 6 -54 17 31 -51 51 5 -54 25 22 2.31 138 0 0 -52 47 9 13 34 59.5 13 31 -19 -51 39 50 -53 58 10 -51 32 53 -54 5 58 2.31 139 0 0 -52 28 55 13 34 54.6 13 30 -20 -51 22 5 -53 39 23 -51 15 11 -53 47 6 2.32 140 0 0 -52 11 12 13 34 49.5 14 29 -20 -51 4 51 -53 21 7 -50 57 58 -53 28 47 2.32 141 0 0 -51 54 1 13 34 44.2 14 28 -20 -50 48 6 -53 3 25 -50 41 17 -53 11 2 2.32 142 0 0 -51 37 22 13 34 38.7 15 28 -21 -50 31 53 -52 46 16 -50 25 6 -52 53 49 2.32 143 0 0 -51 21 15 13 34 33.1 15 27 -21 -50 16 10 -52 29 40 -50 9 26 -52 37 10 2.33 144 0 0 -51 5 40 13 34 27.2 16 26 -21 -50 0 59 -52 13 38 -49 54 16 -52 21 5 2.33 145 0 0 -50 50 37 13 34 21.2 16 25 -22 -49 46 19 -51 58 9 -49 39 39 -52 5 33 2.33 146 0 0 -50 36 8 13 34 15.0 17 24 -22 -49 32 10 -51 43 15 -49 25 32 -51 50 35 2.33 147 0 0 -50 22 10 13 34 8.7 17 23 -22 -49 18 34 -51 28 54 -49 11 58 -51 36 11 2.33 148 0 0 -50 8 46 13 34 2.2 18 22 -23 -49 5 29 -51 15 6 -48 58 55 -51 22 21 2.33 149 0 0 -49 55 54 13 33 55.5 18 21 -23 -48 52 56 -51 1 53 -48 46 24 -51 9 6 2.34 150 0 0 -49 43 36 13 33 48.7 19 20 -23 -48 40 55 -50 49 14 -48 34 25 -50 56 25 2.34 151 0 0 -49 31 50 13 33 41.7 19 19 -23 -48 29 27 -50 37 10 -48 22 58 -50 44 18 2.34 152 0 0 -49 20 38 13 33 34.7 19 19 -24 -48 18 31 -50 25 39 -48 12 4 -50 32 45 2.34 153 0 0 -49 10 0 13 33 27.5 20 18 -24 -48 8 7 -50 14 43 -48 1 42 -50 21 47 2.34 154 0 0 -48 59 54 13 33 20.1 20 17 -24 -47 58 16 -50 4 22 -47 51 52 -50 11 24 2.34 155 0 0 -48 50 23 13 33 12.7 20 16 -24 -47 48 58 -49 54 35 -47 42 35 -50 1 35 2.34 156 0 0 -48 41 24 13 33 5.1 21 15 -24 -47 40 12 -49 45 22 -47 33 51 -49 52 21 2.34 157 0 0 -48 33 0 13 32 57.5 21 14 -24 -47 31 59 -49 36 44 -47 25 39 -49 43 42 2.34 158 0 0 -48 25 9 13 32 49.8 21 13 -24 -47 24 19 -49 28 41 -47 18 0 -49 35 37 2.34 159 0 0 -48 17 52 13 32 41.9 22 12 -24 -47 17 12 -49 21 13 -47 10 54 -49 28 7 2.34 160 0 0 -48 11 8 13 32 34.0 22 11 -24 -47 10 38 -49 14 19 -47 4 21 -49 21 12 2.34 161 0 0 -48 4 59 13 32 26.0 22 10 -24 -47 4 37 -49 8 0 -46 58 20 -49 14 52 2.34 162 0 0 -47 59 23 13 32 18.0 22 9 -24 -46 59 9 -49 2 15 -46 52 53 -49 9 6 2.34 163 0 0 -47 54 21 13 32 9.9 22 8 -24 -46 54 14 -48 57 6 -46 47 59 -49 3 56 2.34 164 0 0 -47 49 54 13 32 1.7 23 7 -24 -46 49 52 -48 52 31 -46 43 38 -48 59 20 2.35 165 0 0 -47 46 0 13 31 53.5 23 6 -24 -46 46 4 -48 48 31 -46 39 50 -48 55 20 2.35 166 0 0 -47 42 40 13 31 45.2 23 5 -24 -46 42 48 -48 45 6 -46 36 34 -48 51 54 2.35 167 0 0 -47 39 54 13 31 36.9 23 4 -24 -46 40 5 -48 42 16 -46 33 52 -48 49 4 2.35 168 0 0 -47 37 42 13 31 28.6 23 3 -24 -46 37 56 -48 40 1 -46 31 44 -48 46 48 2.35 169 0 0 -47 36 4 13 31 20.3 23 2 -24 -46 36 21 -48 38 20 -46 30 8 -48 45 7 2.35 170 0 0 -47 35 0 13 31 11.9 23 1 -24 -46 35 18 -48 37 15 -46 29 6 -48 44 2 2.35 171 0 0 -47 34 30 13 31 3.6 23 0 -23 -46 34 49 -48 36 44 -46 28 37 -48 43 31 2.35 172 0 0 -47 34 35 13 30 55.2 23 359 -23 -46 34 54 -48 36 49 -46 28 41 -48 43 35 2.35 173 0 0 -47 35 13 13 30 46.8 23 358 -23 -46 35 31 -48 37 28 -46 29 18 -48 44 15 2.35 174 0 0 -47 36 25 13 30 38.5 23 357 -23 -46 36 42 -48 38 42 -46 30 29 -48 45 29 2.35 175 0 0 -47 38 11 13 30 30.1 23 356 -22 -46 38 25 -48 40 31 -46 32 12 -48 47 18 2.35 176 0 0 -47 40 32 13 30 21.8 23 355 -22 -46 40 43 -48 42 55 -46 34 29 -48 49 43 2.36 177 0 0 -47 43 26 13 30 13.6 23 354 -22 -46 43 33 -48 45 54 -46 37 19 -48 52 42 2.36 178 0 0 -47 46 54 13 30 5.3 23 353 -22 -46 46 57 -48 49 27 -46 40 42 -48 56 16 2.36 179 0 0 -47 50 56 13 29 57.1 22 352 -21 -46 50 53 -48 53 36 -46 44 39 -49 0 25 2.36 180 0 0 -47 55 33 13 29 49.0 22 351 -21 -46 55 23 -48 58 19 -46 49 8 -49 5 10 2.36 -179 0 0 -48 0 43 13 29 40.9 22 350 -20 -47 0 27 -49 3 37 -46 54 11 -49 10 29 2.36 -178 0 0 -48 6 27 13 29 32.9 22 349 -20 -47 6 3 -49 9 31 -46 59 46 -49 16 23 2.36 -177 0 0 -48 12 45 13 29 24.9 22 348 -20 -47 12 12 -49 15 58 -47 5 55 -49 22 52 2.37 -176 0 0 -48 19 37 13 29 17.1 21 347 -19 -47 18 55 -49 23 1 -47 12 36 -49 29 56 2.37 -175 0 0 -48 27 3 13 29 9.3 21 346 -19 -47 26 10 -49 30 38 -47 19 50 -49 37 34 2.37 -174 0 0 -48 35 2 13 29 1.6 21 345 -18 -47 33 58 -49 38 50 -47 27 37 -49 45 48 2.37 -173 0 0 -48 43 35 13 28 54.0 21 345 -18 -47 42 19 -49 47 37 -47 35 57 -49 54 36 2.37 -172 0 0 -48 52 41 13 28 46.5 20 344 -17 -47 51 13 -49 56 58 -47 44 50 -50 3 58 2.38 -171 0 0 -49 2 22 13 28 39.1 20 343 -17 -48 0 40 -50 6 53 -47 54 15 -50 13 56 2.38 -170 0 0 -49 12 35 13 28 31.9 20 342 -16 -48 10 39 -50 17 24 -48 4 13 -50 24 28 2.38 -169 0 0 -49 23 22 13 28 24.7 19 341 -16 -48 21 11 -50 28 28 -48 14 43 -50 35 35 2.38 -168 0 0 -49 34 43 13 28 17.7 19 340 -15 -48 32 15 -50 40 7 -48 25 46 -50 47 16 2.38 -167 0 0 -49 46 37 13 28 10.8 18 339 -15 -48 43 51 -50 52 21 -48 37 21 -50 59 32 2.39 -166 0 0 -49 59 3 13 28 4.1 18 338 -14 -48 56 0 -51 5 8 -48 49 28 -51 12 22 2.39 -165 0 0 -50 12 3 13 27 57.5 17 337 -14 -49 8 41 -51 18 30 -49 2 7 -51 25 46 2.39 -164 0 0 -50 25 36 13 27 51.1 17 336 -13 -49 21 54 -51 32 26 -49 15 18 -51 39 44 2.39 -163 0 0 -50 39 42 13 27 44.8 17 335 -13 -49 35 39 -51 46 56 -49 29 0 -51 54 17 2.40 -162 0 0 -50 54 20 13 27 38.7 16 334 -12 -49 49 55 -52 1 59 -49 43 15 -52 9 23 2.40 -161 0 0 -51 9 31 13 27 32.8 16 334 -11 -50 4 43 -52 17 36 -49 58 1 -52 25 4 2.40 -160 0 0 -51 25 14 13 27 27.0 15 333 -11 -50 20 3 -52 33 47 -50 13 18 -52 41 18 2.41 -159 0 0 -51 41 30 13 27 21.5 15 332 -10 -50 35 53 -52 50 32 -50 29 6 -52 58 5 2.41 -158 0 0 -51 58 17 13 27 16.1 14 331 -9 -50 52 15 -53 7 49 -50 45 25 -53 15 26 2.41 -157 0 0 -52 15 36 13 27 10.9 13 330 -9 -51 9 7 -53 25 40 -51 2 14 -53 33 21 2.41 -156 0 0 -52 33 27 13 27 5.9 13 329 -8 -51 26 30 -53 44 3 -51 19 34 -53 51 48 2.42 -155 0 0 -52 51 49 13 27 1.2 12 328 -8 -51 44 23 -54 3 0 -51 37 24 -54 10 48 2.42 -154 0 0 -53 10 42 13 26 56.6 12 328 -7 -52 2 46 -54 22 28 -51 55 44 -54 30 21 2.42 -153 0 0 -53 30 6 13 26 52.2 11 327 -6 -52 21 38 -54 42 29 -52 14 34 -54 50 26 2.43 -152 0 0 -53 50 0 13 26 48.1 11 326 -6 -52 41 0 -55 3 2 -52 33 52 -55 11 4 2.43 -151 0 0 -54 10 25 13 26 44.2 10 325 -5 -53 0 51 -55 24 6 -52 53 40 -55 32 13 2.44 -150 0 0 -54 31 19 13 26 40.6 9 324 -4 -53 21 10 -55 45 42 -53 13 56 -55 53 54 2.44 -149 0 0 -54 52 43 13 26 37.1 9 323 -4 -53 41 58 -56 7 49 -53 34 40 -56 16 6 2.45 -148 0 0 -55 14 36 13 26 33.9 8 322 -3 -54 3 13 -56 30 27 -53 55 52 -56 38 49 2.45 -147 0 0 -55 36 57 13 26 31.0 7 322 -2 -54 24 56 -56 53 35 -54 17 31 -57 2 2 2.46 -145 59 59 -55 59 47 13 26 28.2 7 321 -2 -54 47 6 -57 17 12 -54 39 37 -57 25 45 2.46 -144 59 59 -56 23 5 13 26 25.8 6 320 -1 -55 9 42 -57 41 20 -55 2 9 -57 49 59 2.47 -143 59 59 -56 46 49 13 26 23.6 5 319 0 -55 32 44 -58 5 56 -55 25 7 -58 14 41 2.48 -142 59 59 -57 11 0 13 26 21.6 5 318 0 -55 56 11 -58 31 0 -55 48 30 -58 39 52 2.49 -141 59 59 -57 35 37 13 26 19.9 4 317 1 -56 20 3 -58 56 33 -56 12 17 -59 5 31 2.51 -140 59 59 -58 0 40 13 26 18.5 3 317 2 -56 44 19 -59 22 32 -56 36 29 -59 31 37 2.53 -139 59 59 -58 26 7 13 26 17.3 3 316 2 -57 8 59 -59 48 59 -57 1 4 -59 58 11 2.56 -138 59 59 -58 51 59 13 26 16.4 2 315 3 -57 34 1 -60 15 51 -57 26 1 -60 25 10 2.61 -137 59 59 -59 18 13 13 26 15.7 1 314 4 -57 59 25 -60 43 9 -57 51 20 -60 52 36 2.70 -136 59 59 -59 44 50 13 26 15.3 1 313 4 -58 25 10 .. .. .. -58 17 1 .. .. .. 2.93 -135 59 59 -60 11 49 13 26 15.2 0 312 5 -58 51 15 .. .. .. -58 43 1 .. .. .. 5.55 0 0 0 .. .. .... .. .. .. .. .. .. -59 17 40 .. .. .. -59 9 20 .. .. .. .... Uncertainty in time = +/- 2 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: UCAC4 548-008846 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 11 57.7340 DE: +19 28 05.285 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 11 57.7341 DE: +19 28 05.285 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (503) Evelyn asteroid class: approx. diameter [km]: 88 approx. diameter ["]: 0.085 distance from Earth [AU]: 1.42690 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#79 date of fit: 2023 Oct 09 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): 0.017", 0.001", 74.653° remarks: * orbital elements for (503)Evelyn : Mean anomaly = 322.0687094569 deg Arg. of pericenter = 41.3202422113 deg Long. of node = 68.7984786804 deg Inclination = 5.0113323941 deg Eccentricity = 0.1737087443 Semimajor axis = 2.7261952928 AU Perihelion dist = 2.2526313318 AU Mag: H = 9.35, G = 0.15 Epoch of elements : MJD 60258.56312500 TDT (2023 Nov 10.5631) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#792023Oct09,10.12,2023,11,10,13.517108,0.001205,-0.918239,-4.897695,-0.006825,-0.001700,-0.000152,0.000001,0.000000 171.1326,19.5308,-26.78,-17.16,False UCAC4 548-008846,4.19937055,19.4681347,0.00,12.43,0.00,0.0,0,,4.22274411,19.5307939,0.81,0.00,0,0,0 503,Evelyn,12.54,87.800,1.4269,0,0,-2.136,-0.05,,5.0,0 0,321.9454,2023,11,10,41.3202,68.7985,5.0113,0.17371,2.72620,2.25263,9.36,5.0,0.15 1.053,0.0170,0.0006,75,0.0170,Known errors,-1.00,0,-1,-1 20231110_008846,60232.88 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 21:03 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org