IOTA/IOTA-ES occultation update for (3904) Honda / TYC 5518-00287-1 event on 2024 Dec 19, 12:17 UT Visible from Summary ------- On 2024 Dec 19 UT, the 14.662 km diameter asteroid (3904) Honda will occult a 10.5 mag star in the constellation Virgo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.21 mag to 16.73 mag (the magnitude of the asteroid) for at most 0.730 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: 96 * date and approx. time of event: 2024 Dec 19, 12:12 - 2024 Dec 19, 12:22 * geocentric midpoint of event [JD]: 2460664.01233258 * magnitude of target star: 10.52 * magnitude drop [mag]: 6.21 * estimated maximum duration [s]: 0.730 * Moon: 81 % sunlit, 45° distance * Sun: 85° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 16 * 1 sigma uncertainty interval [path widths]: +/- 0.41 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.002", 125°) * approx speed of asteroid's shadow [km/s]: 20.1573 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5518-00287-1 by 3904 Honda on 2024 Dec 19 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 -161 0 0 68 47 59 12 13 0.7 0 112 -43 68 43 16 68 52 42 68 39 27 68 56 32 .... -160 0 0 68 38 50 12 13 0.8 1 113 -42 68 34 5 68 43 34 68 30 14 68 47 25 -0.16 -159 0 0 68 29 16 12 13 0.8 1 114 -42 68 24 30 68 34 3 68 20 38 68 37 55 -0.28 -158 0 0 68 19 18 12 13 0.8 1 115 -42 68 14 30 68 24 6 68 10 37 68 28 0 -0.33 -157 0 0 68 8 54 12 13 0.9 2 116 -42 68 4 5 68 13 44 68 0 10 68 17 39 -0.36 -156 0 0 67 58 5 12 13 1.0 2 117 -42 67 53 13 68 2 56 67 49 17 68 6 53 -0.38 -155 0 0 67 46 49 12 13 1.1 3 118 -42 67 41 55 67 51 42 67 37 58 67 55 40 -0.39 -154 0 0 67 35 5 12 13 1.2 3 119 -42 67 30 10 67 40 1 67 26 11 67 44 0 -0.40 -153 0 0 67 22 54 12 13 1.4 4 120 -42 67 17 57 67 27 51 67 13 56 67 31 52 -0.41 -152 0 0 67 10 13 12 13 1.6 4 121 -42 67 5 14 67 15 13 67 1 12 67 19 15 -0.41 -151 0 0 66 57 3 12 13 1.8 4 122 -42 66 52 2 67 2 5 66 47 58 67 6 9 -0.42 -150 0 0 66 43 22 12 13 2.0 5 123 -42 66 38 19 66 48 26 66 34 13 66 52 32 -0.42 -149 0 0 66 29 10 12 13 2.2 5 124 -42 66 24 5 66 34 16 66 19 57 66 38 24 -0.43 -148 0 0 66 14 26 12 13 2.5 6 124 -42 66 9 18 66 19 34 66 5 9 66 23 44 -0.43 -147 0 0 65 59 8 12 13 2.8 6 125 -41 65 53 58 66 4 19 65 49 47 66 8 30 -0.43 -146 0 0 65 43 16 12 13 3.2 7 126 -41 65 38 4 65 48 29 65 33 51 65 52 43 -0.43 -145 0 0 65 26 49 12 13 3.5 7 127 -41 65 21 34 65 32 4 65 17 19 65 36 20 -0.43 -144 0 0 65 9 45 12 13 3.9 8 128 -41 65 4 28 65 15 3 65 0 11 65 19 21 -0.44 -143 0 0 64 52 4 12 13 4.4 8 129 -41 64 46 44 64 57 24 64 42 25 65 1 44 -0.44 -142 0 0 64 33 44 12 13 4.8 9 130 -41 64 28 21 64 39 7 64 24 0 64 43 29 -0.44 -141 0 0 64 14 45 12 13 5.4 9 131 -40 64 9 19 64 20 10 64 4 56 64 24 34 -0.44 -140 0 0 63 55 4 12 13 5.9 10 132 -40 63 49 36 64 0 32 63 45 10 64 4 59 -0.44 -139 0 0 63 34 41 12 13 6.5 10 133 -40 63 29 10 63 40 12 63 24 42 63 44 41 -0.44 -138 0 0 63 13 34 12 13 7.2 11 134 -40 63 8 1 63 19 9 63 3 30 63 23 40 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32 23 -19 16 20 -1.58 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 5518-00287-1 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 11 57 21.3340 DE: -07 39 02.994 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 11 57 21.3342 DE: -07 39 02.995 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.5 * B mag [mag]: 10.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3904) Honda asteroid class: approx. diameter [km]: 15 approx. diameter ["]: 0.008 distance from Earth [AU]: 2.38020 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#53 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): 0.016", 0.002", 125.413° remarks: * orbital elements for (3904)Honda : Mean anomaly = 71.6349510007 deg Arg. of pericenter = 125.1710085902 deg Long. of node = 312.1797785638 deg Inclination = 14.9809963717 deg Eccentricity = 0.0979697875 Semimajor axis = 2.5563260993 AU Perihelion dist = 2.3058833745 AU Mag: H = 11.76, G = 0.15 Epoch of elements : MJD 60663.51233284 TDT (2024 Dec 19.5123) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#532023Apr27,0.73,2024,12,19,12.295982,0.300763,0.304019,8.076314,-8.013578,-0.005342,0.002267,0.000000,0.000000 -93.3727,-7.7889,-5.11,-23.42,False TYC 5518-00287-1,11.95592608,-7.6508314,10.75,10.52,10.40,0.0,0,,11.97720398,-7.7889025,6.21,5.89,0,0,0 3904,Honda,16.73,14.662,2.3802,0,0,2.008,-29.61,,1.2,0 0,71.5114,2024,12,19,125.1710,312.1798,14.9810,0.09797,2.55633,2.30588,11.76,5.0,0.15 1.405,0.0160,0.0023,125,0.0035,Known errors,1.07,0,-1,-1 20241219_0287-1,60140.75 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:54 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org