IOTA/IOTA-ES occultation update for (52) Europa / TYC 1333-01029-1 event on 2020 Dec 25, 11:00 UT Visible from New Zealand Summary ------- On 2020 Dec 25 UT, the 325.6 km diameter asteroid (52) Europa will occult a 11.1 mag star in the constellation Gemini 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 0.38 mag to 10.15 mag (the magnitude of the asteroid) for at most 28.1 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, astrometry for the asteroid kindly provided by Bill Owen, 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: 2020 Dec 25, 10:56 - 2020 Dec 25, 11:05 * geocentric midpoint of event [JD]: 2459208.95887083 * magnitude of target star: 11.10 * magnitude drop [mag]: 0.38 * estimated maximum duration [s]: 28.1 * Moon: 81 % sunlit, 56° distance * Sun: 172° distance * rough path description: New Zealand Additional comments ------------------- low mag drop The occultation path -------------------- * approximate projected width [km]: 764 * 1 sigma uncertainty interval [path widths]: +/- 0.04 * 1 sigma uncertainty interval [seconds]: +/- 2.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.008) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.008", 87°) * approx speed of asteroid's shadow [km/s]: 11.6055 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1333-01029-1 by 52 Europa on 2020 Dec 25 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 ' " Longitude Longitude Longitude Longitude .. .. .. -71 0 0 .. .. .... .. .. .. ... .. .. -133 59 50 ... .. .. -135 2 7 .... .. .. .. -70 0 0 .. .. .... .. .. .. ... .. .. -135 27 16 ... .. .. -136 27 22 .... -124 33 32 -69 0 0 10 56 56.1 0 326 7 ... .. .. -136 56 29 ... .. .. -137 54 42 .... -126 26 59 -68 0 0 10 56 56.6 2 328 5 ... .. .. -138 27 36 ... .. .. -139 24 12 1.21 -128 19 31 -67 0 0 10 56 57.6 3 330 4 -117 29 34 -140 0 47 -116 42 35 -140 56 0 1.62 -130 11 32 -66 0 0 10 56 59.4 4 332 3 -119 40 13 -141 36 12 -118 54 42 -142 30 15 1.79 -132 3 27 -65 0 0 10 57 1.7 5 333 2 -121 48 20 -143 14 2 -121 4 7 -144 7 7 1.88 -133 55 38 -64 0 0 10 57 4.7 7 335 0 -123 54 32 -144 54 31 -123 11 27 -145 46 51 1.94 -135 48 28 -63 0 0 10 57 8.5 8 337 -1 -125 59 21 -146 37 55 -125 17 15 -147 29 41 1.98 -137 42 17 -62 0 0 10 57 12.9 9 339 -2 -128 3 15 -148 24 32 -127 21 59 -149 15 56 2.01 -139 37 26 -61 0 0 10 57 18.1 10 340 -3 -130 6 42 -150 14 44 -129 26 9 -151 5 58 2.03 -141 34 19 -60 0 0 10 57 24.1 12 342 -5 -132 10 7 -152 8 58 -131 30 9 -153 0 15 2.05 -143 33 19 -59 0 0 10 57 30.9 13 344 -6 -134 13 54 -154 7 43 -133 34 25 -154 59 18 2.06 -145 34 52 -58 0 0 10 57 38.6 14 346 -7 -136 18 29 -156 11 40 -135 39 21 -157 3 49 2.07 Latitude Latitude Latitude Latitude -147 0 0 -57 18 49 10 57 44.4 15 347 -8 -53 3 45 -62 47 25 -52 46 36 -63 17 7 2.11 -148 0 0 -56 50 14 10 57 48.7 16 348 -9 -52 37 36 -62 13 38 -52 20 34 -62 42 40 2.13 -149 0 0 -56 22 3 10 57 53.1 16 349 -9 -52 11 46 -61 40 28 -51 54 53 -62 8 52 2.13 -150 0 0 -55 54 16 10 57 57.7 17 350 -10 -51 46 17 -61 7 54 -51 29 32 -61 35 43 2.13 -151 0 0 -55 26 53 10 58 2.5 17 351 -10 -51 21 10 -60 35 57 -51 4 32 -61 3 12 2.13 -152 0 0 -54 59 56 10 58 7.4 18 352 -11 -50 56 25 -60 4 38 -50 39 54 -60 31 20 2.14 -153 0 0 -54 33 25 10 58 12.5 18 353 -12 -50 32 2 -59 33 55 -50 15 39 -60 0 8 2.14 -154 0 0 -54 7 21 10 58 17.6 19 354 -12 -50 8 3 -59 3 50 -49 51 47 -59 29 34 2.14 -155 0 0 -53 41 45 10 58 23.0 19 355 -13 -49 44 28 -58 34 22 -49 28 19 -58 59 39 2.14 -156 0 0 -53 16 37 10 58 28.4 20 356 -13 -49 21 17 -58 5 32 -49 5 15 -58 30 24 2.14 -157 0 0 -52 51 57 10 58 34.0 20 357 -14 -48 58 32 -57 37 20 -48 42 36 -58 1 48 2.14 -158 0 0 -52 27 46 10 58 39.7 21 358 -14 -48 36 13 -57 9 46 -48 20 23 -57 33 51 2.14 -159 0 0 -52 4 6 10 58 45.5 21 359 -15 -48 14 20 -56 42 50 -47 58 36 -57 6 33 2.14 -160 0 0 -51 40 55 10 58 51.4 21 360 -15 -47 52 54 -56 16 32 -47 37 16 -56 39 55 2.14 -161 0 0 -51 18 15 10 58 57.3 22 1 -15 -47 31 55 -55 50 53 -47 16 23 -56 13 56 2.14 -162 0 0 -50 56 6 10 59 3.4 22 2 -16 -47 11 23 -55 25 52 -46 55 58 -55 48 37 2.14 -163 0 0 -50 34 28 10 59 9.6 23 3 -16 -46 51 20 -55 1 30 -46 36 0 -55 23 57 2.15 -164 0 0 -50 13 22 10 59 15.9 23 4 -17 -46 31 46 -54 37 47 -46 16 31 -54 59 58 2.15 -165 0 0 -49 52 48 10 59 22.2 23 5 -17 -46 12 40 -54 14 43 -45 57 30 -54 36 37 2.15 -166 0 0 -49 32 47 10 59 28.6 23 6 -17 -45 54 4 -53 52 17 -45 38 59 -54 13 57 2.15 -167 0 0 -49 13 18 10 59 35.1 24 7 -18 -45 35 57 -53 30 31 -45 20 57 -53 51 56 2.15 -168 0 0 -48 54 22 10 59 41.6 24 8 -18 -45 18 20 -53 9 24 -45 3 26 -53 30 35 2.15 -169 0 0 -48 36 0 10 59 48.2 24 9 -18 -45 1 14 -52 48 56 -44 46 24 -53 9 54 2.15 -170 0 0 -48 18 11 10 59 54.8 24 10 -18 -44 44 38 -52 29 7 -44 29 52 -52 49 53 2.15 -171 0 0 -48 0 56 11 0 1.4 24 11 -19 -44 28 34 -52 9 58 -44 13 52 -52 30 32 2.15 -172 0 0 -47 44 15 11 0 8.1 25 12 -19 -44 13 0 -51 51 28 -43 58 22 -52 11 51 2.15 -173 0 0 -47 28 8 11 0 14.9 25 13 -19 -43 57 58 -51 33 37 -43 43 24 -51 53 50 2.15 -174 0 0 -47 12 36 11 0 21.6 25 14 -19 -43 43 27 -51 16 26 -43 28 57 -51 36 29 2.15 -175 0 0 -46 57 38 11 0 28.4 25 15 -19 -43 29 28 -50 59 55 -43 15 2 -51 19 48 2.15 -176 0 0 -46 43 15 11 0 35.1 25 16 -19 -43 16 2 -50 44 3 -43 1 38 -51 3 47 2.15 -177 0 0 -46 29 28 11 0 41.9 25 17 -19 -43 3 7 -50 28 51 -42 48 47 -50 48 27 2.15 -178 0 0 -46 16 15 11 0 48.7 25 18 -20 -42 50 45 -50 14 19 -42 36 29 -50 33 47 2.15 -179 0 0 -46 3 38 11 0 55.5 25 19 -20 -42 38 56 -50 0 26 -42 24 42 -50 19 47 2.15 -180 0 0 -45 51 36 11 1 2.2 25 20 -20 -42 27 40 -49 47 13 -42 13 29 -50 6 27 2.15 179 0 0 -45 40 10 11 1 9.0 25 21 -20 -42 16 57 -49 34 40 -42 2 48 -49 53 48 2.15 178 0 0 -45 29 19 11 1 15.7 25 22 -20 -42 6 47 -49 22 48 -41 52 41 -49 41 49 2.15 177 0 0 -45 19 5 11 1 22.4 25 23 -20 -41 57 10 -49 11 35 -41 43 6 -49 30 30 2.15 176 0 0 -45 9 26 11 1 29.0 25 24 -20 -41 48 7 -49 1 2 -41 34 5 -49 19 52 2.15 175 0 0 -45 0 24 11 1 35.7 24 25 -19 -41 39 37 -48 51 9 -41 25 38 -49 9 54 2.15 174 0 0 -44 51 58 11 1 42.2 24 26 -19 -41 31 42 -48 41 57 -41 17 44 -49 0 37 2.15 173 0 0 -44 44 8 11 1 48.8 24 27 -19 -41 24 20 -48 33 24 -41 10 24 -48 52 1 2.15 172 0 0 -44 36 55 11 1 55.2 24 28 -19 -41 17 32 -48 25 32 -41 3 37 -48 44 5 2.16 171 0 0 -44 30 18 11 2 1.6 24 29 -19 -41 11 18 -48 18 20 -40 57 25 -48 36 49 2.16 170 0 0 -44 24 18 11 2 8.0 23 30 -19 -41 5 38 -48 11 48 -40 51 46 -48 30 15 2.16 169 0 0 -44 18 54 11 2 14.3 23 31 -19 -41 0 33 -48 5 57 -40 46 42 -48 24 21 2.16 168 0 0 -44 14 7 11 2 20.5 23 32 -18 -40 56 2 -48 0 46 -40 42 12 -48 19 7 2.16 167 0 0 -44 9 57 11 2 26.6 22 33 -18 -40 52 6 -47 56 16 -40 38 17 -48 14 35 2.16 166 0 0 -44 6 25 11 2 32.6 22 34 -18 -40 48 44 -47 52 26 -40 34 56 -48 10 44 2.16 165 0 0 -44 3 29 11 2 38.6 22 35 -18 -40 45 57 -47 49 17 -40 32 9 -48 7 33 2.16 164 0 0 -44 1 10 11 2 44.5 21 36 -17 -40 43 44 -47 46 48 -40 29 57 -48 5 3 2.16 163 0 0 -43 59 28 11 2 50.2 21 37 -17 -40 42 7 -47 45 0 -40 28 20 -48 3 15 2.17 162 0 0 -43 58 24 11 2 55.9 20 38 -17 -40 41 4 -47 43 53 -40 27 17 -48 2 7 2.17 161 0 0 -43 57 57 11 3 1.4 20 39 -16 -40 40 36 -47 43 27 -40 26 49 -48 1 41 2.17 160 0 0 -43 58 7 11 3 6.9 20 39 -16 -40 40 43 -47 43 41 -40 26 56 -48 1 56 2.17 159 0 0 -43 58 55 11 3 12.2 19 40 -15 -40 41 26 -47 44 37 -40 27 38 -48 2 52 2.17 158 0 0 -44 0 20 11 3 17.4 19 41 -15 -40 42 43 -47 46 13 -40 28 55 -48 4 30 2.17 157 0 0 -44 2 22 11 3 22.4 18 42 -15 -40 44 35 -47 48 31 -40 30 46 -48 6 49 2.18 156 0 0 -44 5 2 11 3 27.4 18 43 -14 -40 47 3 -47 51 29 -40 33 13 -48 9 49 2.18 155 0 0 -44 8 20 11 3 32.2 17 44 -14 -40 50 5 -47 55 9 -40 36 15 -48 13 31 2.18 154 0 0 -44 12 15 11 3 36.9 17 44 -13 -40 53 43 -47 59 30 -40 39 52 -48 17 55 2.18 153 0 0 -44 16 48 11 3 41.4 16 45 -13 -40 57 56 -48 4 33 -40 44 4 -48 23 0 2.18 152 0 0 -44 21 59 11 3 45.8 16 46 -12 -41 2 45 -48 10 16 -40 48 51 -48 28 47 2.19 151 0 0 -44 27 47 11 3 50.0 15 47 -12 -41 8 8 -48 16 42 -40 54 13 -48 35 16 2.19 150 0 0 -44 34 13 11 3 54.1 14 48 -11 -41 14 7 -48 23 48 -41 0 10 -48 42 26 2.19 149 0 0 -44 41 17 11 3 58.0 14 48 -11 -41 20 41 -48 31 37 -41 6 42 -48 50 19 2.19 148 0 0 -44 48 58 11 4 1.7 13 49 -10 -41 27 50 -48 40 7 -41 13 49 -48 58 54 2.20 147 0 0 -44 57 17 11 4 5.3 13 50 -9 -41 35 34 -48 49 18 -41 21 31 -49 8 10 2.20 146 0 0 -45 6 14 11 4 8.8 12 51 -9 -41 43 54 -48 59 12 -41 29 48 -49 18 9 2.20 145 0 0 -45 15 48 11 4 12.0 11 52 -8 -41 52 49 -49 9 47 -41 38 41 -49 28 51 2.21 144 0 0 -45 26 1 11 4 15.1 11 52 -8 -42 2 18 -49 21 5 -41 48 8 -49 40 14 2.21 143 0 0 -45 36 51 11 4 18.0 10 53 -7 -42 12 23 -49 33 4 -41 58 10 -49 52 20 2.22 142 0 0 -45 48 18 11 4 20.7 9 54 -6 -42 23 3 -49 45 45 -42 8 46 -50 5 9 2.22 141 0 0 -46 0 23 11 4 23.2 9 55 -6 -42 34 17 -49 59 8 -42 19 58 -50 18 40 2.23 140 0 0 -46 13 6 11 4 25.5 8 55 -5 -42 46 6 -50 13 14 -42 31 44 -50 32 53 2.23 139 0 0 -46 26 25 11 4 27.6 7 56 -4 -42 58 30 -50 28 1 -42 44 4 -50 47 49 2.24 138 0 0 -46 40 23 11 4 29.6 7 57 -4 -43 11 28 -50 43 31 -42 56 59 -51 3 28 2.25 137 0 0 -46 54 57 11 4 31.3 6 58 -3 -43 25 1 -50 59 43 -43 10 28 -51 19 50 2.26 136 0 0 -47 10 9 11 4 32.9 5 58 -2 -43 39 8 -51 16 37 -43 24 31 -51 36 55 2.27 135 0 0 -47 25 58 11 4 34.2 4 59 -2 -43 53 49 -51 34 14 -43 39 8 -51 54 42 2.29 134 0 0 -47 42 23 11 4 35.4 4 60 -1 -44 9 4 -51 52 32 -43 54 19 -52 13 12 2.32 133 0 0 -47 59 26 11 4 36.3 3 60 0 -44 24 53 -52 11 33 -44 10 3 -52 32 25 2.35 132 0 0 -48 17 4 11 4 37.0 2 61 0 -44 41 15 -52 31 17 -44 26 21 .. .. .. 2.41 131 0 0 -48 35 20 11 4 37.5 1 62 1 -44 58 11 .. .. .. -44 43 11 .. .. .. 2.52 130 0 0 -48 54 11 11 4 37.8 1 63 2 -45 15 39 .. .. .. -45 0 35 .. .. .. 2.85 129 0 0 -49 13 38 11 4 37.9 0 63 3 -45 33 41 .. .. .. -45 18 31 .. .. .. 19.11 Uncertainty in time = +/- 2 secs Prediction of 2020 Oct 28.0 Data for the target star ------------------------ * name: TYC 1333-01029-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 34 16.5792 DE: +17 02 32.064 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 34 16.5793 DE: +17 02 32.063 * position source: Gaia DR2 * standard error: RA,DE [mas]: (0.500,0.400) * V mag [mag]: 11.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (52) Europa asteroid class: ShapeModel approx. diameter [km]: 326 approx. diameter ["]: 0.252 distance from Earth [AU]: 1.78470 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: Preston date of fit: 2020 Oct 28 source of used astrometry: MPC, FASTT, TMO number of used observations: 2915 number of rejected observations: 31 time covered by the observations: 1961 Jan 10 - 2020 Oct 17 1 sigma uncertainty ellipse (major, minor, PA): 0.019", 0.008", 86.8° remarks: * orbital elements for (52)Europa : Mean anomaly = 347.70175676 deg Arg. of pericenter = 343.26458830 deg Long. of node = 128.59921809 deg Inclination = 7.47855201 deg Eccentricity = 0.11059397 Semimajor axis = 3.09506344 AU Perihelion dist = 2.75276809 AU Mag: H = 6.40, G = 0.15 Epoch of elements : MJD 59208.45900000 TDT (2020 Dec 25.4590) ------ occelmnt file for Occult BEGIN ----------------------------------- Preston2020Oct28,28.1,2020,12,25,11.0129,-0.20118,-0.88211,-6.38642,1.45670,-0.00039,0.00066,0.00000,0.00000 -160.7357,17.0248,14.88,-23.37 TYC 1333-01029-1,6.57127202,17.0422399,0.00,11.10,0.00,0.0,0,,6.59163200,17.0248494 52,Europa,10.15,325.6,1.7847,0,0,-2.194,7.18,,16.4 0,347.6187,2020,12,25,343.2646,128.5992,7.4786,0.11059,3.09506,2.75277,6.40,5.0,0.15 1.037,0.0190,0.0080,87,0.0093,Known errors 20201225_1029-1,59150.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2020 Oct 28, 21:02 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org