IOTA/IOTA-ES occultation update for (5413) Smyslov / TYC 5249-00445-1 event on 2024 Dec 23, 09:55 UT Visible from Summary ------- On 2024 Dec 23 UT, the 18.98 km diameter asteroid (5413) Smyslov will occult a 11.1 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.75 mag to 18.83 mag (the magnitude of the asteroid) for at most 0.870 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 Dec 23, 09:50 - 2024 Dec 23, 10:00 * geocentric midpoint of event [JD]: 2460667.91357442 * magnitude of target star: 11.08 * magnitude drop [mag]: 7.75 * estimated maximum duration [s]: 0.870 * Moon: 46 % sunlit, 160° distance * Sun: 75° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 21 * 1 sigma uncertainty interval [path widths]: +/- 0.21 * 1 sigma uncertainty interval [seconds]: +/- 1.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.001", 66°) * approx speed of asteroid's shadow [km/s]: 21.8406 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5249-00445-1 by 5413 Smyslov on 2024 Dec 23 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 13 0 0 -46 13 18 9 51 3.8 0 97 62 -46 18 55 -46 7 41 -46 21 17 -46 5 19 .... 14 0 0 -46 18 37 9 51 3.9 1 97 63 -46 24 13 -46 13 0 -46 26 36 -46 10 38 0.33 15 0 0 -46 23 36 9 51 4.0 2 96 63 -46 29 12 -46 18 0 -46 31 35 -46 15 38 0.36 16 0 0 -46 28 16 9 51 4.1 2 95 64 -46 33 52 -46 22 40 -46 36 14 -46 20 18 0.38 17 0 0 -46 32 37 9 51 4.3 3 94 64 -46 38 12 -46 27 1 -46 40 34 -46 24 39 0.39 18 0 0 -46 36 38 9 51 4.5 4 94 64 -46 42 14 -46 31 3 -46 44 35 -46 28 41 0.39 19 0 0 -46 40 20 9 51 4.8 5 93 64 -46 45 56 -46 34 45 -46 48 17 -46 32 24 0.40 20 0 0 -46 43 43 9 51 5.1 5 92 65 -46 49 18 -46 38 8 -46 51 40 -46 35 47 0.40 21 0 0 -46 46 47 9 51 5.5 6 92 65 -46 52 22 -46 41 12 -46 54 44 -46 38 51 0.40 22 0 0 -46 49 32 9 51 5.9 7 91 65 -46 55 7 -46 43 57 -46 57 28 -46 41 36 0.40 23 0 0 -46 51 57 9 51 6.4 7 90 65 -46 57 32 -46 46 23 -46 59 53 -46 44 2 0.40 24 0 0 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0 32 - 7 14 53 - 6 58 2 0.43 162 0 0 - 6 45 51 9 59 5.6 34 268 -34 - 6 51 46 - 6 39 57 - 6 54 16 - 6 37 27 0.43 163 0 0 - 6 25 38 9 59 8.9 33 268 -35 - 6 31 32 - 6 19 44 - 6 34 2 - 6 17 15 0.43 164 0 0 - 6 5 48 9 59 12.0 32 267 -36 - 6 11 42 - 5 59 55 - 6 14 11 - 5 57 26 0.43 165 0 0 - 5 46 22 9 59 15.1 31 267 -37 - 5 52 15 - 5 40 30 - 5 54 44 - 5 38 1 0.43 166 0 0 - 5 27 20 9 59 18.1 30 267 -38 - 5 33 12 - 5 21 28 - 5 35 40 - 5 18 59 0.44 167 0 0 - 5 8 41 9 59 21.0 29 267 -39 - 5 14 32 - 5 2 50 - 5 17 1 - 5 0 22 0.44 168 0 0 - 4 50 27 9 59 23.8 28 267 -40 - 4 56 18 - 4 44 37 - 4 58 46 - 4 42 9 0.44 169 0 0 - 4 32 38 9 59 26.5 27 266 -41 - 4 38 28 - 4 26 48 - 4 40 56 - 4 24 20 0.44 170 0 0 - 4 15 13 9 59 29.1 26 266 -42 - 4 21 3 - 4 9 24 - 4 23 30 - 4 6 57 0.44 171 0 0 - 3 58 14 9 59 31.6 25 266 -43 - 4 4 3 - 3 52 26 - 4 6 30 - 3 49 59 0.44 172 0 0 - 3 41 40 9 59 34.0 24 266 -44 - 3 47 28 - 3 35 52 - 3 49 55 - 3 33 26 0.44 173 0 0 - 3 25 32 9 59 36.3 23 266 -45 - 3 31 19 - 3 19 45 - 3 33 46 - 3 17 18 0.44 174 0 0 - 3 9 49 9 59 38.5 22 266 -46 - 3 15 36 - 3 4 3 - 3 18 3 - 3 1 37 0.44 175 0 0 - 2 54 33 9 59 40.6 21 265 -47 - 3 0 19 - 2 48 47 - 3 2 45 - 2 46 21 0.44 176 0 0 - 2 39 43 9 59 42.6 20 265 -48 - 2 45 28 - 2 33 57 - 2 47 54 - 2 31 32 0.44 177 0 0 - 2 25 19 9 59 44.5 19 265 -49 - 2 31 4 - 2 19 34 - 2 33 30 - 2 17 9 0.44 178 0 0 - 2 11 21 9 59 46.3 18 265 -50 - 2 17 6 - 2 5 37 - 2 19 31 - 2 3 12 0.44 179 0 0 - 1 57 51 9 59 48.0 17 265 -51 - 2 3 34 - 1 52 7 - 2 6 0 - 1 49 42 0.44 180 0 0 - 1 44 47 9 59 49.7 16 265 -52 - 1 50 30 - 1 39 4 - 1 52 55 - 1 36 39 0.44 -179 0 0 - 1 32 10 9 59 51.2 15 265 -52 - 1 37 52 - 1 26 27 - 1 40 17 - 1 24 3 0.44 -178 0 0 - 1 19 59 9 59 52.6 14 265 -53 - 1 25 42 - 1 14 17 - 1 28 6 - 1 11 53 0.44 -177 0 0 - 1 8 16 9 59 53.9 13 265 -54 - 1 13 58 - 1 2 35 - 1 16 23 - 1 0 11 0.45 -176 0 0 - 0 57 1 9 59 55.1 12 265 -55 - 1 2 42 - 0 51 20 - 1 5 6 - 0 48 56 0.45 -175 0 0 - 0 46 12 9 59 56.2 11 265 -56 - 0 51 53 - 0 40 32 - 0 54 17 - 0 38 8 0.45 -174 0 0 - 0 35 51 9 59 57.2 10 265 -57 - 0 41 31 - 0 30 11 - 0 43 55 - 0 27 47 0.45 -173 0 0 - 0 25 57 9 59 58.1 9 265 -57 - 0 31 37 - 0 20 18 - 0 34 1 - 0 17 54 0.45 -172 0 0 - 0 16 31 9 59 58.9 8 265 -58 - 0 22 11 - 0 10 52 - 0 24 34 - 0 8 29 0.46 -171 0 0 - 0 7 32 9 59 59.6 7 265 -59 - 0 13 11 - 0 1 54 - 0 15 35 0 0 29 0.46 -170 0 0 0 0 59 10 0 0.2 6 265 -60 - 0 4 40 0 6 37 - 0 7 3 0 9 0 0.47 -169 0 0 0 9 2 10 0 0.8 5 265 -60 0 3 24 0 14 40 0 1 1 0 17 3 0.48 -168 0 0 0 16 38 10 0 1.2 4 265 -61 0 11 0 0 22 16 0 8 37 0 24 38 0.49 -167 0 0 0 23 46 10 0 1.5 3 265 -62 0 18 8 0 29 23 0 15 46 0 31 46 0.52 -166 0 0 0 30 26 10 0 1.7 2 265 -62 0 24 49 0 36 3 0 22 26 0 38 26 0.57 -165 0 0 0 36 39 10 0 1.8 1 265 -63 0 31 2 0 42 16 0 28 39 0 44 38 0.77 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.8 Data for the target star ------------------------ * name: TYC 5249-00445-1 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 23 11 36.8148 DE: -05 28 33.386 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 23 11 36.8145 DE: -05 28 33.387 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.1 * B mag [mag]: 11.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (5413) Smyslov asteroid class: approx. diameter [km]: 19 approx. diameter ["]: 0.007 distance from Earth [AU]: 3.73820 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#57 date of fit: 2023 Apr 25 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): 0.013", 0.001", 66.184° remarks: * orbital elements for (5413)Smyslov : Mean anomaly = 187.5350016810 deg Arg. of pericenter = 134.3503584006 deg Long. of node = 41.9468686106 deg Inclination = 0.4243592477 deg Eccentricity = 0.1439388751 Semimajor axis = 3.1595182611 AU Perihelion dist = 2.7047407567 AU Mag: H = 12.34, G = 0.15 Epoch of elements : MJD 60667.41357421 TDT (2024 Dec 23.4136) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#572023Apr25,0.87,2024,12,23,9.925786,0.154738,-0.354577,11.310283,4.903352,0.005441,0.002293,0.000000,0.000000 106.9018,-5.3411,30.93,-23.42,False TYC 5249-00445-1,23.19355968,-5.4759403,11.35,11.08,10.93,0.0,0,,23.21498882,-5.3410601,7.75,7.45,0,0,0 5413,Smyslov,18.83,18.980,3.7382,0,0,1.782,11.54,,1.8,0 0,187.4624,2024,12,23,134.3504,41.9469,0.4244,0.14394,3.15952,2.70474,12.34,5.0,0.15 1.211,0.0133,0.0015,66,0.0015,Known errors,0.91,0,-1,-1 20241223_0445-1,60140.75 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 18:02 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org