IOTA/IOTA-ES occultation update for (2002) Euler / UCAC4 492-045852 event on 2024 Jan 05, 06:05 UT Visible from Summary ------- On 2024 Jan 05 UT, the 18.725 km diameter asteroid (2002) Euler will occult a 11.9 mag star in the constellation Canis Minor for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.12 mag to 15.98 mag (the magnitude of the asteroid) for at most 1.710 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: 2024 Jan 05, 05:56 - 2024 Jan 05, 06:14 * geocentric midpoint of event [JD]: 2460314.75369729 * magnitude of target star: 11.88 * magnitude drop [mag]: 4.12 * estimated maximum duration [s]: 1.710 * Moon: 39 % sunlit, 89° distance * Sun: 162° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 21 * 1 sigma uncertainty interval [path widths]: +/- 0.20 * 1 sigma uncertainty interval [seconds]: +/- 1.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.003", 96°) * approx speed of asteroid's shadow [km/s]: 10.9688 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 492-045852 by 2002 Euler on 2024 Jan 5 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 -168 0 0 -15 58 11 6 14 2.3 0 81 -6 -15 52 27 -16 3 55 -15 50 12 -16 6 11 .... -167 0 0 -15 49 39 6 14 2.1 1 81 -7 -15 43 56 -15 55 23 -15 41 40 -15 57 39 0.22 -166 0 0 -15 41 20 6 14 1.8 2 81 -8 -15 35 37 -15 47 3 -15 33 21 -15 49 19 0.35 -165 0 0 -15 33 13 6 14 1.4 3 81 -9 -15 27 30 -15 38 56 -15 25 15 -15 41 12 0.39 -164 0 0 -15 25 19 6 14 0.7 4 80 -10 -15 19 37 -15 31 2 -15 17 21 -15 33 18 0.42 -163 0 0 -15 17 38 6 13 59.8 5 80 -11 -15 11 56 -15 23 21 -15 9 40 -15 25 37 0.43 -162 0 0 -15 10 11 6 13 58.8 6 80 -12 -15 4 28 -15 15 53 -15 2 13 -15 18 9 0.44 -161 0 0 -15 2 56 6 13 57.6 7 80 -13 -14 57 14 -15 8 38 -14 54 58 -15 10 54 0.45 -160 0 0 -14 55 55 6 13 56.2 8 79 -14 -14 50 13 -15 1 37 -14 47 57 -15 3 52 0.46 -159 0 0 -14 49 7 6 13 54.6 9 79 -15 -14 43 25 -14 54 49 -14 41 10 -14 57 4 0.46 -158 0 0 -14 42 32 6 13 52.8 10 79 -16 -14 36 50 -14 48 14 -14 34 35 -14 50 29 0.46 -157 0 0 -14 36 11 6 13 50.9 11 79 -16 -14 30 30 -14 41 53 -14 28 15 -14 44 8 0.46 -156 0 0 -14 30 4 6 13 48.7 12 78 -17 -14 24 23 -14 35 45 -14 22 7 -14 38 1 0.47 -155 0 0 -14 24 10 6 13 46.4 13 78 -18 -14 18 29 -14 29 52 -14 16 14 -14 32 7 0.47 -154 0 0 -14 18 31 6 13 44.0 14 78 -19 -14 12 50 -14 24 12 -14 10 35 -14 26 27 0.47 -153 0 0 -14 13 5 6 13 41.3 15 77 -20 -14 7 24 -14 18 46 -14 5 9 -14 21 1 0.47 -152 0 0 -14 7 53 6 13 38.5 16 77 -21 -14 2 12 -14 13 34 -13 59 57 -14 15 49 0.47 -151 0 0 -14 2 55 6 13 35.5 17 77 -22 -13 57 15 -14 8 36 -13 55 0 -14 10 51 0.47 -150 0 0 -13 58 11 6 13 32.3 17 77 -23 -13 52 31 -14 3 52 -13 50 16 -14 6 7 0.47 -149 0 0 -13 53 42 6 13 29.0 18 76 -23 -13 48 1 -13 59 22 -13 45 47 -14 1 37 0.48 -148 0 0 -13 49 26 6 13 25.5 19 76 -24 -13 43 46 -13 55 7 -13 41 31 -13 57 21 0.48 -147 0 0 -13 45 25 6 13 21.8 20 76 -25 -13 39 45 -13 51 5 -13 37 30 -13 53 20 0.48 -146 0 0 -13 41 38 6 13 18.0 21 75 -26 -13 35 58 -13 47 18 -13 33 44 -13 49 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-133 0 0 -13 14 18 6 12 14.0 33 71 -36 -13 8 39 -13 19 57 -13 6 25 -13 22 11 0.48 -132 0 0 -13 13 53 6 12 8.1 34 70 -37 -13 8 14 -13 19 32 -13 6 0 -13 21 46 0.48 -131 0 0 -13 13 42 6 12 2.0 35 70 -37 -13 8 3 -13 19 21 -13 5 49 -13 21 35 0.48 -130 0 0 -13 13 45 6 11 55.8 36 70 -38 -13 8 7 -13 19 24 -13 5 52 -13 21 39 0.48 -129 0 0 -13 14 3 6 11 49.4 37 69 -39 -13 8 25 -13 19 42 -13 6 10 -13 21 57 0.48 -128 0 0 -13 14 36 6 11 43.0 38 69 -39 -13 8 57 -13 20 15 -13 6 43 -13 22 29 0.48 -127 0 0 -13 15 22 6 11 36.4 39 68 -40 -13 9 43 -13 21 1 -13 7 29 -13 23 16 0.48 -126 0 0 -13 16 23 6 11 29.6 39 68 -41 -13 10 44 -13 22 2 -13 8 30 -13 24 16 0.48 -125 0 0 -13 17 38 6 11 22.8 40 67 -41 -13 11 59 -13 23 17 -13 9 45 -13 25 32 0.48 -124 0 0 -13 19 7 6 11 15.9 41 66 -42 -13 13 28 -13 24 46 -13 11 14 -13 27 1 0.48 -123 0 0 -13 20 51 6 11 8.8 42 66 -43 -13 15 12 -13 26 30 -13 12 58 -13 28 44 0.48 -122 0 0 -13 22 48 6 11 1.6 43 65 -43 -13 17 9 -13 28 27 -13 14 55 -13 30 42 0.48 -121 0 0 -13 24 59 6 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40.4 6 284 12 -34 22 59 -34 34 31 -34 20 42 -34 36 48 0.52 2 0 0 -34 38 28 5 56 39.5 5 283 12 -34 32 43 -34 44 14 -34 30 26 -34 46 31 0.52 3 0 0 -34 48 3 5 56 38.8 4 283 13 -34 42 17 -34 53 48 -34 40 0 -34 56 5 0.53 4 0 0 -34 57 27 5 56 38.2 3 282 14 -34 51 42 -35 3 13 -34 49 26 -35 5 30 0.53 5 0 0 -35 6 43 5 56 37.7 3 282 15 -35 0 58 -35 12 28 -34 58 41 -35 14 45 0.55 6 0 0 -35 15 49 5 56 37.4 2 281 16 -35 10 4 -35 21 34 -35 7 47 -35 23 50 0.57 7 0 0 -35 24 45 5 56 37.1 1 281 17 -35 19 0 -35 30 29 -35 16 44 -35 32 46 0.65 8 0 0 -35 33 31 5 56 37.1 0 280 17 -35 27 46 -35 39 15 -35 25 30 -35 41 32 3.77 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: UCAC4 492-045852 * constellation : Canis Minor * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 07 48 13.3864 DE: +08 12 57.999 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 07 48 13.3865 DE: +08 12 57.999 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.9 * B mag [mag]: 12.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2002) Euler asteroid class: approx. diameter [km]: 19 approx. diameter ["]: 0.017 distance from Earth [AU]: 1.54310 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 date of fit: 2023 Apr 27 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", 0.003", 96.014° remarks: * orbital elements for (2002)Euler : Mean anomaly = 245.6302686830 deg Arg. of pericenter = 54.7258087138 deg Long. of node = 178.6045341422 deg Inclination = 8.5025400945 deg Eccentricity = 0.0697621877 Semimajor axis = 2.4166903250 AU Perihelion dist = 2.2480967209 AU Mag: H = 12.53, G = 0.15 Epoch of elements : MJD 60314.25369755 TDT (2024 Jan 05.2537) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Apr27,1.71,2024,1,5,6.088735,-0.074903,-0.430494,-6.099635,1.060275,-0.001132,0.001487,0.000001,0.000000 -78.2901,8.1565,89.94,-22.66,False UCAC4 492-045852,7.80371845,8.2161110,12.21,11.88,11.70,0.0,0,,7.82565340,8.1564921,4.13,3.86,0,0,0 2002,Euler,15.98,18.725,1.5431,0,0,-2.341,6.04,,1.0,0 0,245.5637,2024,1,5,54.7258,178.6045,8.5025,0.06976,2.41669,2.24810,12.53,5.0,0.15 1.198,0.0170,0.0031,96,0.0033,Known errors,1.92,0,-1,-1 20240105_045852,60137.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:01 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org