IOTA/IOTA-ES occultation update for (535167) 2014 XT40 / TYC 1270-00038-1 event on 2023 Nov 10, 04:42 UT Visible from Summary ------- On 2023 Nov 10 UT, the 114.8 km diameter asteroid (535167) 2014 XT40 will occult a 10.8 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 11.60 mag to 22.44 mag (the magnitude of the asteroid) for at most 5.110 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: 6 * date and approx. time of event: 2023 Nov 10, 04:51 - 2023 Nov 10, 05:00 * geocentric midpoint of event [JD]: 2460258.70557513 * magnitude of target star: 10.84 * magnitude drop [mag]: 11.60 * estimated maximum duration [s]: 5.110 * Moon: 10 % sunlit, 122° distance * Sun: 158° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 121 * 1 sigma uncertainty interval [path widths]: +/- 10.09 * 1 sigma uncertainty interval [seconds]: +/- 71.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.070, +/- 0.050) * 1 sigma uncertainty ellipse (major, minor, PA): (0.070", 0.050", 88°) * approx speed of asteroid's shadow [km/s]: 22.4580 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1270-00038-1 by 535167 2014 XT40 on 2023 Nov 10 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 -151 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 18 29 8 .. .. .. .... -150 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 18 50 11 .. .. .. .... -149 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 19 11 28 .. .. .. .... -148 0 0 6 42 17 5 0 30.3 0 71 -22 7 17 1 .. .. .. 19 33 2 .. .. .. .... -147 0 0 7 2 56 5 0 30.3 1 71 -23 7 37 43 6 28 17 19 54 49 .. .. .. -0.28 -146 0 0 7 23 50 5 0 30.1 2 71 -24 7 58 40 6 49 8 20 16 51 .. .. .. -0.31 -145 0 0 7 44 59 5 0 29.9 3 71 -25 8 19 51 7 10 14 20 39 7 .. .. .. -0.31 -144 0 0 8 6 21 5 0 29.5 4 72 -26 8 41 16 7 31 34 21 1 35 - 3 50 59 -0.32 -143 0 0 8 27 57 5 0 29.1 5 72 -27 9 2 55 7 53 7 21 24 16 - 3 30 15 -0.32 -142 0 0 8 49 46 5 0 28.5 6 72 -28 9 24 47 8 14 53 21 47 9 - 3 9 17 -0.32 -141 0 0 9 11 48 5 0 27.9 7 72 -29 9 46 51 8 36 52 22 10 13 - 2 48 5 -0.32 -140 0 0 9 34 1 5 0 27.1 8 72 -31 10 9 6 8 59 3 22 33 27 - 2 26 41 -0.32 -139 0 0 9 56 26 5 0 26.2 9 72 -32 10 31 34 9 21 25 22 56 52 - 2 5 3 -0.33 -138 0 0 10 19 1 5 0 25.3 11 73 -33 10 54 12 9 43 59 23 20 26 - 1 43 14 -0.33 -137 0 0 10 41 47 5 0 24.2 12 73 -34 11 17 0 10 6 43 23 44 9 - 1 21 13 -0.33 -136 0 0 11 4 43 5 0 23.1 13 73 -35 11 39 58 10 29 36 24 8 0 - 0 59 1 -0.33 -135 0 0 11 27 49 5 0 21.8 14 73 -36 12 3 5 10 52 39 24 31 59 - 0 36 38 -0.33 -134 0 0 11 51 2 5 0 20.5 15 73 -37 12 26 21 11 15 51 24 56 4 - 0 14 4 -0.33 -133 0 0 12 14 24 5 0 19.0 16 74 -38 12 49 45 11 39 11 25 20 16 0 8 39 -0.33 -132 0 0 12 37 54 5 0 17.5 17 74 -39 13 13 17 12 2 39 25 44 33 0 31 31 -0.33 -131 0 0 13 1 31 5 0 15.9 18 74 -40 13 36 55 12 26 13 26 8 56 0 54 32 -0.33 -130 0 0 13 25 14 5 0 14.2 19 74 -41 14 0 40 12 49 55 26 33 22 1 17 41 -0.33 -129 0 0 13 49 2 5 0 12.4 20 75 -42 14 24 31 13 13 42 26 57 53 1 40 58 -0.33 -128 0 0 14 12 57 5 0 10.5 21 75 -43 14 48 26 13 37 35 27 22 26 2 4 22 -0.33 -127 0 0 14 36 55 5 0 8.5 22 75 -44 15 12 27 14 1 32 27 47 2 2 27 52 -0.33 -126 0 0 15 0 58 5 0 6.4 23 76 -45 15 36 31 14 25 33 28 11 39 2 51 28 -0.33 -125 0 0 15 25 5 5 0 4.2 24 76 -46 16 0 39 14 49 38 28 36 17 3 15 10 -0.33 -124 0 0 15 49 14 5 0 2.0 25 76 -47 16 24 49 15 13 47 29 0 56 3 38 57 -0.33 -123 0 0 16 13 25 4 59 59.6 26 77 -48 16 49 2 15 37 57 29 25 35 4 2 48 -0.33 -122 0 0 16 37 39 4 59 57.2 27 77 -49 17 13 16 16 2 9 29 50 13 4 26 42 -0.33 -121 0 0 17 1 53 4 59 54.7 28 77 -50 17 37 31 16 26 23 30 14 49 4 50 40 -0.33 -120 0 0 17 26 8 4 59 52.2 29 78 -51 18 1 47 16 50 37 30 39 23 5 14 41 -0.33 -119 0 0 17 50 22 4 59 49.5 30 78 -52 18 26 2 17 14 51 31 3 55 5 38 44 -0.33 -118 0 0 18 14 37 4 59 46.8 31 79 -53 18 50 17 17 39 4 31 28 23 6 2 48 -0.33 -117 0 0 18 38 49 4 59 44.0 32 79 -54 19 14 30 18 3 17 31 52 47 6 26 53 -0.33 -116 0 0 19 3 0 4 59 41.1 33 80 -55 19 38 41 18 27 28 32 17 7 6 50 58 -0.33 -115 0 0 19 27 9 4 59 38.2 34 80 -56 20 2 50 18 51 36 32 41 21 7 15 3 -0.33 -114 0 0 19 51 15 4 59 35.2 35 80 -57 20 26 56 19 15 42 33 5 30 7 39 7 -0.33 -113 0 0 20 15 17 4 59 32.1 36 81 -58 20 50 58 19 39 44 33 29 33 8 3 10 -0.33 -112 0 0 20 39 15 4 59 28.9 37 82 -58 21 14 56 20 3 42 33 53 28 8 27 11 -0.33 -111 0 0 21 3 8 4 59 25.7 38 82 -59 21 38 49 20 27 36 34 17 17 8 51 10 -0.33 -110 0 0 21 26 56 4 59 22.5 39 83 -60 22 2 37 20 51 24 34 40 57 9 15 5 -0.33 -109 0 0 21 50 39 4 59 19.2 40 83 -61 22 26 19 21 15 7 35 4 29 9 38 57 -0.33 -108 0 0 22 14 15 4 59 15.8 41 84 -62 22 49 55 21 38 44 35 27 52 10 2 45 -0.33 -107 0 0 22 37 45 4 59 12.4 42 84 -63 23 13 23 22 2 14 35 51 6 10 26 28 -0.33 -106 0 0 23 1 7 4 59 8.9 43 85 -64 23 36 45 22 25 37 36 14 9 10 50 6 -0.33 -105 0 0 23 24 22 4 59 5.4 44 86 -65 23 59 58 22 48 53 36 37 3 11 13 39 -0.33 -104 0 0 23 47 28 4 59 1.8 45 87 -65 24 23 4 23 12 0 36 59 45 11 37 5 -0.33 -103 0 0 24 10 25 4 58 58.2 46 87 -66 24 46 0 23 34 59 37 22 17 12 0 24 -0.33 -102 0 0 24 33 14 4 58 54.5 46 88 -67 25 8 47 23 57 48 37 44 36 12 23 36 -0.33 -101 0 0 24 55 53 4 58 50.8 47 89 -68 25 31 25 24 20 28 38 6 44 12 46 41 -0.33 -100 0 0 25 18 21 4 58 47.0 48 90 -69 25 53 52 24 42 58 38 28 39 13 9 37 -0.33 - 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73 0 0 34 0 29 4 56 57.5 68 128 -72 34 34 56 33 26 10 46 44 42 22 12 34 -0.34 - 72 0 0 34 16 6 4 56 53.4 68 131 -72 34 50 30 33 41 50 46 59 7 22 29 7 -0.34 - 71 0 0 34 31 25 4 56 49.2 69 133 -71 35 5 46 33 57 11 47 13 15 22 45 23 -0.34 - 70 0 0 34 46 26 4 56 45.1 69 136 -71 35 20 44 34 12 16 47 27 5 23 1 20 -0.34 - 69 0 0 35 1 10 4 56 41.0 69 138 -70 35 35 25 34 27 2 47 40 38 23 17 0 -0.34 - 68 0 0 35 15 35 4 56 36.8 70 141 -70 35 49 48 34 41 30 47 53 52 23 32 22 -0.34 - 67 0 0 35 29 43 4 56 32.7 70 144 -69 36 3 52 34 55 41 48 6 49 23 47 26 -0.34 - 66 0 0 35 43 32 4 56 28.6 70 146 -68 36 17 39 35 9 33 48 19 28 24 2 11 -0.34 - 65 0 0 35 57 3 4 56 24.5 71 149 -68 36 31 7 35 23 7 48 31 49 24 16 38 -0.34 - 64 0 0 36 10 16 4 56 20.5 71 152 -67 36 44 17 35 36 23 48 43 52 24 30 46 -0.34 - 63 0 0 36 23 11 4 56 16.4 71 155 -66 36 57 9 35 49 20 48 55 38 24 44 36 -0.34 - 62 0 0 36 35 47 4 56 12.3 71 158 -66 37 9 42 36 1 59 49 7 6 24 58 7 -0.34 - 61 0 0 36 48 5 4 56 8.3 71 161 -65 37 21 58 36 14 20 49 18 16 25 11 19 -0.34 - 60 0 0 37 0 5 4 56 4.3 71 164 -64 37 33 55 36 26 22 49 29 9 25 24 11 -0.34 - 59 0 0 37 11 46 4 56 0.3 71 167 -64 37 45 33 36 38 6 49 39 44 25 36 45 -0.34 - 58 0 0 37 23 9 4 55 56.3 71 170 -63 37 56 53 36 49 32 49 50 2 25 49 0 -0.34 - 57 0 0 37 34 13 4 55 52.3 71 173 -62 38 7 55 37 0 39 50 0 2 26 0 55 -0.34 - 56 0 0 37 44 59 4 55 48.3 71 176 -62 38 18 38 37 11 27 50 9 44 26 12 31 -0.34 - 55 0 0 37 55 26 4 55 44.4 71 179 -61 38 29 3 37 21 57 50 19 9 26 23 48 -0.34 - 54 0 0 38 5 35 4 55 40.5 71 182 -60 38 39 9 37 32 8 50 28 17 26 34 45 -0.34 - 53 0 0 38 15 25 4 55 36.6 70 184 -60 38 48 57 37 42 1 50 37 8 26 45 23 -0.34 - 52 0 0 38 24 57 4 55 32.7 70 187 -59 38 58 26 37 51 35 50 45 41 26 55 42 -0.34 - 51 0 0 38 34 10 4 55 28.8 70 190 -58 39 7 37 38 0 50 50 53 57 27 5 40 -0.34 - 50 0 0 38 43 5 4 55 24.9 70 192 -57 39 16 29 38 9 47 51 1 56 27 15 20 -0.34 - 49 0 0 38 51 41 4 55 21.1 69 195 -57 39 25 3 38 18 25 51 9 38 27 24 39 -0.34 - 48 0 0 38 59 58 4 55 17.3 69 197 -56 39 33 18 38 26 45 51 17 2 27 33 39 -0.34 - 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Uncertainty in time = +/- 72 secs Prediction of 2023 Sep 17.8 Data for the target star ------------------------ * name: TYC 1270-00038-1 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 32 30.9993 DE: +18 41 53.381 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 32 30.9994 DE: +18 41 53.381 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (535167) 2014 XT40 asteroid class: TNO approx. diameter [km]: 115 approx. diameter ["]: 0.005 distance from Earth [AU]: 31.71460 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#9 date of fit: 2023 Feb 09 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): 0.070", 0.050", 88.117° remarks: * orbital elements for (535167)2014 XT40 : Mean anomaly = 20.4617696642 deg Arg. of pericenter = 174.3861230665 deg Long. of node = 223.7520972495 deg Inclination = 7.3163398924 deg Eccentricity = 0.1979622302 Semimajor axis = 39.7458571879 AU Perihelion dist = 31.8776786562 AU Mag: H = 7.25, G = 0.15 Epoch of elements : MJD 60258.19597222 TDT (2023 Nov 10.1960) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#92023Feb09,5.11,2023,11,10,4.933803,-0.065822,0.312698,-12.416680,-2.550577,-0.002359,-0.000029,0.000001,0.000000 -54.6270,18.7500,101.96,-17.06,False TYC 1270-00038-1,4.54194425,18.6981615,0.00,10.84,0.00,0.0,0,,4.56530203,18.7499959,11.60,0.00,0,0,0 535167,2014 XT40,22.44,114.800,31.7146,0,0,-0.242,-0.71,,11.4,0 0,20.4610,2023,11,10,174.3861,223.7521,7.3163,0.19796,39.74586,31.87768,7.25,5.0,0.15 11.091,0.0700,0.0497,88,0.0858,Known errors,-1.00,0,-1,-1 20231110_0038-1,60204.81 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Sep 17, 19:24 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org