IOTA/IOTA-ES occultation update for (16070) Charops / TYC 1163-00183-1 event on 2023 Oct 25, 18:33 UT Visible from Russia, Europe, Africa Summary ------- On 2023 Oct 25 UT, the 65 km diameter asteroid (16070) Charops will occult a 12.5 mag star in the constellation Pegasus for observers along a path across Russia, Europe, Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.41 mag to 16.86 mag (the magnitude of the asteroid) for at most 6.950 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: 2023 Oct 25, 18:24 - 2023 Oct 25, 18:44 * geocentric midpoint of event [JD]: 2460243.27377438 * magnitude of target star: 12.47 * magnitude drop [mag]: 4.41 * estimated maximum duration [s]: 6.950 * Moon: 88 % sunlit, 20° distance * Sun: 137° distance * rough path description: Russia, Europe, Africa Additional comments ------------------- RUWE The occultation path -------------------- * approximate projected width [km]: 77 * 1 sigma uncertainty interval [path widths]: +/- 0.14 * 1 sigma uncertainty interval [seconds]: +/- 5.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.010) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.001", 56°) * approx speed of asteroid's shadow [km/s]: 9.3586 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1163-00183-1 by 16070 Charops on 2023 Oct 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 ' " Latitude Latitude Latitude Latitude - 56 0 0 -11 14 38 18 43 52.5 0 77 42 -10 53 25 -11 35 46 -10 47 33 -11 41 34 .... - 55 0 0 -11 0 46 18 43 52.3 1 77 41 -10 39 30 -11 21 58 -10 33 37 -11 27 48 -0.44 - 54 0 0 -10 46 2 18 43 51.8 2 77 40 -10 24 41 -11 7 18 -10 18 47 -11 13 8 -0.52 - 53 0 0 -10 30 23 18 43 51.1 3 77 39 -10 8 58 -10 51 43 -10 3 3 -10 57 35 -0.54 - 52 0 0 -10 13 51 18 43 50.1 4 77 38 - 9 52 21 -10 35 15 - 9 46 25 -10 41 9 -0.56 - 51 0 0 - 9 56 24 18 43 48.9 5 77 37 - 9 34 50 -10 17 54 - 9 28 52 -10 23 48 -0.57 - 50 0 0 - 9 38 3 18 43 47.4 6 76 36 - 9 16 23 - 9 59 37 - 9 10 24 -10 5 33 -0.57 - 49 0 0 - 9 18 47 18 43 45.6 8 76 35 - 8 57 2 - 9 40 27 - 8 51 1 - 9 46 24 -0.58 - 48 0 0 - 8 58 36 18 43 43.6 9 76 34 - 8 36 45 - 9 20 21 - 8 30 43 - 9 26 20 -0.58 - 47 0 0 - 8 37 29 18 43 41.3 10 76 33 - 8 15 32 - 8 59 20 - 8 9 28 - 9 5 21 -0.58 - 46 0 0 - 8 15 26 18 43 38.8 11 76 32 - 7 53 23 - 8 37 24 - 7 47 18 - 8 43 26 -0.59 - 45 0 0 - 7 52 28 18 43 35.9 12 76 31 - 7 30 18 - 8 14 32 - 7 24 11 - 8 20 36 -0.59 - 44 0 0 - 7 28 33 18 43 32.8 13 76 30 - 7 6 17 - 7 50 44 - 7 0 8 - 7 56 49 -0.59 - 43 0 0 - 7 3 41 18 43 29.4 14 76 29 - 6 41 18 - 7 25 59 - 6 35 7 - 7 32 7 -0.59 - 42 0 0 - 6 37 53 18 43 25.7 15 75 28 - 6 15 22 - 7 0 18 - 6 9 9 - 7 6 27 -0.59 - 41 0 0 - 6 11 7 18 43 21.7 16 75 27 - 5 48 29 - 6 33 39 - 5 42 13 - 6 39 51 -0.59 - 40 0 0 - 5 43 23 18 43 17.5 17 75 26 - 5 20 37 - 6 6 4 - 5 14 19 - 6 12 17 -0.59 - 39 0 0 - 5 14 42 18 43 12.9 18 75 25 - 4 51 47 - 5 37 30 - 4 45 27 - 5 43 46 -0.59 - 38 0 0 - 4 45 2 18 43 8.0 19 75 24 - 4 21 59 - 5 7 58 - 4 15 36 - 5 14 17 -0.59 - 37 0 0 - 4 14 23 18 43 2.9 20 75 23 - 3 51 11 - 4 37 28 - 3 44 46 - 4 43 49 -0.59 - 36 0 0 - 3 42 45 18 42 57.4 21 75 22 - 3 19 24 - 4 6 0 - 3 12 57 - 4 12 23 -0.59 - 35 0 0 - 3 10 9 18 42 51.6 22 75 21 - 2 46 38 - 3 33 32 - 2 40 9 - 3 39 58 -0.59 - 34 0 0 - 2 36 32 18 42 45.5 23 76 19 - 2 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-0.65 146 0 0 75 6 19 18 24 44.4 7 292 -18 75 29 24 74 43 21 75 35 47 74 37 2 -0.65 147 0 0 74 58 25 18 24 44.0 6 293 -18 75 21 39 74 35 17 75 28 5 74 28 56 -0.65 148 0 0 74 50 10 18 24 43.5 6 294 -17 75 13 34 74 26 52 75 20 2 74 20 29 -0.65 149 0 0 74 41 34 18 24 43.1 6 295 -17 75 5 9 74 18 6 75 11 40 74 11 40 -0.66 150 0 0 74 32 36 18 24 42.6 6 296 -17 74 56 22 74 8 58 75 2 56 74 2 29 -0.66 151 0 0 74 23 16 18 24 42.2 5 297 -17 74 47 13 73 59 27 74 53 50 73 52 55 -0.66 152 0 0 74 13 33 18 24 41.8 5 298 -17 74 37 41 73 49 33 74 44 21 73 42 57 -0.67 153 0 0 74 3 26 18 24 41.4 5 299 -16 74 27 46 73 39 14 74 34 29 73 32 36 -0.67 154 0 0 73 52 54 18 24 41.1 4 300 -16 74 17 26 73 28 31 74 24 13 73 21 49 -0.67 155 0 0 73 41 57 18 24 40.7 4 301 -16 74 6 41 73 17 21 74 13 32 73 10 36 -0.68 156 0 0 73 30 33 18 24 40.4 4 302 -16 73 55 30 73 5 44 74 2 25 72 58 55 -0.69 156 59 59 73 18 42 18 24 40.1 3 303 -15 73 43 53 72 53 40 73 50 50 72 46 47 -0.69 157 59 59 73 6 22 18 24 39.8 3 304 -15 73 31 47 72 41 7 73 38 48 72 34 11 -0.70 158 59 59 72 53 33 18 24 39.6 3 305 -15 73 19 12 72 28 4 73 26 17 72 21 4 -0.72 159 59 59 72 40 13 18 24 39.4 2 306 -15 73 6 7 72 14 30 73 13 16 72 7 26 -0.74 160 59 59 72 26 22 18 24 39.2 2 307 -14 72 52 30 72 0 24 72 59 44 71 53 16 -0.76 161 59 59 72 11 58 18 24 39.0 1 308 -14 72 38 21 71 45 44 72 45 40 71 38 32 -0.81 162 59 59 71 57 0 18 24 38.9 1 309 -14 72 23 39 71 30 31 72 31 1 71 23 14 -0.89 163 59 59 71 41 26 18 24 38.8 1 310 -13 72 8 21 71 14 41 72 15 49 71 7 21 -1.09 164 59 59 71 25 16 18 24 38.8 0 311 -13 71 52 28 .. .. .. 71 59 59 .. .. .. -2.28 0 0 0 .. .. .... .. .. .. .. .. .. 71 35 56 .. .. .. 71 43 33 .. .. .. .... Uncertainty in time = +/- 6 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: TYC 1163-00183-1 * constellation : Pegasus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 23 02 50.1266 DE: +12 04 31.821 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 23 02 50.1265 DE: +12 04 31.821 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 12.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (16070) Charops asteroid class: approx. diameter [km]: 65 approx. diameter ["]: 0.022 distance from Earth [AU]: 4.03300 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#50 date of fit: 2023 Oct 10 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): 0.018", 0.001", 55.652° remarks: * orbital elements for (16070)Charops : Mean anomaly = 52.4663726908 deg Arg. of pericenter = 354.6296987830 deg Long. of node = 300.8398083874 deg Inclination = 16.2290080520 deg Eccentricity = 0.1270449261 Semimajor axis = 5.1497291027 AU Perihelion dist = 4.4954821495 AU Mag: H = 9.83, G = 0.15 Epoch of elements : MJD 60242.77354167 TDT (2023 Oct 25.7735) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Oct10,6.95,2023,10,25,18.570585,-0.364219,0.384500,-3.831637,-3.636024,0.004089,0.000360,0.000001,0.000001 33.5601,12.2053,-102.54,-12.20,False TYC 1163-00183-1,23.04725740,12.0755058,0.00,12.47,0.00,0.0,0,,23.06720478,12.2053307,4.40,0.00,0,0,0 16070,Charops,16.86,65.000,4.0330,0,0,-0.570,-7.93,,4.8,0 0,52.4011,2023,10,25,354.6297,300.8398,16.2290,0.12704,5.14973,4.49548,9.85,5.0,0.15 1.138,0.0177,0.0012,56,0.0177,Known errors,-1.00,0,-1,-1 20231025_0183-1,60232.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 20:57 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org