IOTA/IOTA-ES occultation update for (13084) Virchow / TYC 1356-02368-1 event on 2024 Sep 20, 16:55 UT Visible from Summary ------- On 2024 Sep 20 UT, the 10.6142858973048 km diameter asteroid (13084) Virchow will occult a 10.1 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 9.29 mag to 19.38 mag (the magnitude of the asteroid) for at most 0.460 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 Sep 20, 16:51 - 2024 Sep 20, 17:00 * geocentric midpoint of event [JD]: 2460574.20551487 * magnitude of target star: 10.09 * magnitude drop [mag]: 9.29 * estimated maximum duration [s]: 0.460 * Moon: 90 % sunlit, 68° distance * Sun: 75° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.27 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.001", 90°) * approx speed of asteroid's shadow [km/s]: 23.6264 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1356-02368-1 by 13084 Virchow on 2024 Sep 20 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 115 0 0 18 12 29 16 51 38.0 1 68 -69 18 9 10 18 15 48 18 7 20 18 17 38 .... 116 0 0 18 36 18 16 51 38.1 2 68 -68 18 32 59 18 39 38 18 31 10 18 41 27 -0.29 117 0 0 19 0 4 16 51 38.3 3 68 -67 18 56 45 19 3 23 18 54 55 19 5 13 -0.30 118 0 0 19 23 45 16 51 38.6 4 69 -66 19 20 26 19 27 4 19 18 36 19 28 54 -0.30 119 0 0 19 47 21 16 51 39.0 5 69 -66 19 44 2 19 50 40 19 42 13 19 52 30 -0.30 120 0 0 20 10 52 16 51 39.4 6 69 -65 20 7 33 20 14 11 20 5 43 20 16 1 -0.30 121 0 0 20 34 17 16 51 40.0 7 70 -64 20 30 58 20 37 36 20 29 8 20 39 25 -0.30 122 0 0 20 57 35 16 51 40.6 8 70 -63 20 54 16 21 0 54 20 52 26 21 2 43 -0.30 123 0 0 21 20 46 16 51 41.4 9 70 -62 21 17 27 21 24 5 21 15 38 21 25 54 -0.30 124 0 0 21 43 49 16 51 42.2 10 71 -61 21 40 31 21 47 8 21 38 41 21 48 57 -0.30 125 0 0 22 6 44 16 51 43.1 11 71 -60 22 3 26 22 10 3 22 1 36 22 11 53 -0.30 126 0 0 22 29 31 16 51 44.0 12 72 -59 22 26 12 22 32 49 22 24 23 22 34 39 -0.30 127 0 0 22 52 8 16 51 45.1 13 72 -58 22 48 50 22 55 27 22 47 1 22 57 16 -0.30 128 0 0 23 14 36 16 51 46.2 14 72 -58 23 11 18 23 17 54 23 9 29 23 19 43 -0.30 129 0 0 23 36 53 16 51 47.5 15 73 -57 23 33 35 23 40 11 23 31 46 23 42 1 -0.30 130 0 0 23 59 0 16 51 48.8 16 73 -56 23 55 42 24 2 18 23 53 53 24 4 7 -0.30 131 0 0 24 20 56 16 51 50.1 17 74 -55 24 17 38 24 24 14 24 15 50 24 26 3 -0.30 132 0 0 24 42 40 16 51 51.6 18 74 -54 24 39 23 24 45 58 24 37 34 24 47 47 -0.30 133 0 0 25 4 13 16 51 53.1 19 75 -53 25 0 56 25 7 30 24 59 7 25 9 19 -0.30 134 0 0 25 25 33 16 51 54.7 20 75 -52 25 22 16 25 28 50 25 20 27 25 30 39 -0.30 135 0 0 25 46 40 16 51 56.4 21 75 -51 25 43 23 25 49 57 25 41 35 25 51 46 -0.30 136 0 0 26 7 34 16 51 58.1 22 76 -50 26 4 18 26 10 51 26 2 29 26 12 40 -0.30 137 0 0 26 28 15 16 51 59.9 23 76 -49 26 24 58 26 31 32 26 23 10 26 33 20 -0.30 138 0 0 26 48 42 16 52 1.7 24 77 -48 26 45 25 26 51 58 26 43 37 26 53 46 -0.30 139 0 0 27 8 54 16 52 3.7 25 77 -47 27 5 38 27 12 10 27 3 50 27 13 58 -0.30 140 0 0 27 28 52 16 52 5.7 26 78 -46 27 25 36 27 32 8 27 23 48 27 33 56 -0.30 141 0 0 27 48 35 16 52 7.7 26 78 -45 27 45 19 27 51 51 27 43 32 27 53 38 -0.30 142 0 0 28 8 3 16 52 9.8 27 79 -45 28 4 47 28 11 18 28 3 0 28 13 6 -0.30 143 0 0 28 27 15 16 52 12.0 28 80 -44 28 24 0 28 30 30 28 22 12 28 32 18 -0.30 144 0 0 28 46 11 16 52 14.2 29 80 -43 28 42 56 28 49 26 28 41 9 28 51 14 -0.30 145 0 0 29 4 52 16 52 16.5 30 81 -42 29 1 37 29 8 6 28 59 50 29 9 53 -0.30 146 0 0 29 23 15 16 52 18.9 31 81 -41 29 20 1 29 26 30 29 18 14 29 28 17 -0.30 147 0 0 29 41 23 16 52 21.3 32 82 -40 29 38 9 29 44 37 29 36 22 29 46 24 -0.30 148 0 0 29 59 13 16 52 23.7 33 83 -39 29 55 59 30 2 27 29 54 13 30 4 14 -0.30 149 0 0 30 16 47 16 52 26.2 34 83 -38 30 13 33 30 20 0 30 11 47 30 21 47 -0.30 150 0 0 30 34 3 16 52 28.8 35 84 -37 30 30 50 30 37 16 30 29 3 30 39 3 -0.30 151 0 0 30 51 1 16 52 31.4 36 84 -36 30 47 48 30 54 14 30 46 2 30 56 1 -0.30 152 0 0 31 7 42 16 52 34.0 37 85 -35 31 4 30 31 10 55 31 2 44 31 12 41 -0.30 153 0 0 31 24 5 16 52 36.7 37 86 -35 31 20 53 31 27 18 31 19 7 31 29 4 -0.30 154 0 0 31 40 10 16 52 39.4 38 86 -34 31 36 58 31 43 23 31 35 13 31 45 8 -0.30 155 0 0 31 55 57 16 52 42.2 39 87 -33 31 52 45 31 59 9 31 51 0 32 0 55 -0.30 156 0 0 32 11 26 16 52 45.0 40 88 -32 32 8 14 32 14 37 32 6 29 32 16 23 -0.30 157 0 0 32 26 36 16 52 47.8 41 89 -31 32 23 25 32 29 47 32 21 39 32 31 33 -0.30 158 0 0 32 41 27 16 52 50.7 42 89 -30 32 38 16 32 44 38 32 36 31 32 46 23 -0.30 159 0 0 32 56 0 16 52 53.6 43 90 -29 32 52 49 32 59 11 32 51 4 33 0 56 -0.30 160 0 0 33 10 14 16 52 56.6 43 91 -28 33 7 4 33 13 24 33 5 19 33 15 9 -0.30 161 0 0 33 24 9 16 52 59.6 44 92 -27 33 20 59 33 27 19 33 19 14 33 29 4 -0.30 162 0 0 33 37 45 16 53 2.6 45 92 -27 33 34 35 33 40 55 33 32 50 33 42 39 -0.30 163 0 0 33 51 2 16 53 5.7 46 93 -26 33 47 52 33 54 11 33 46 8 33 55 56 -0.30 164 0 0 34 3 59 16 53 8.8 47 94 -25 34 0 50 34 7 9 33 59 6 34 8 53 -0.30 165 0 0 34 16 38 16 53 11.9 48 95 -24 34 13 29 34 19 47 34 11 45 34 21 31 -0.30 166 0 0 34 28 57 16 53 15.0 48 96 -23 34 25 48 34 32 5 34 24 4 34 33 49 -0.30 167 0 0 34 40 56 16 53 18.2 49 97 -22 34 37 48 34 44 5 34 36 4 34 45 49 -0.30 168 0 0 34 52 37 16 53 21.4 50 98 -21 34 49 28 34 55 45 34 47 45 34 57 29 -0.30 169 0 0 35 3 57 16 53 24.7 51 99 -21 35 0 49 35 7 5 34 59 6 35 8 49 -0.30 170 0 0 35 14 59 16 53 27.9 52 100 -20 35 11 51 35 18 6 35 10 8 35 19 50 -0.30 171 0 0 35 25 40 16 53 31.2 52 101 -19 35 22 33 35 28 48 35 20 50 35 30 31 -0.30 172 0 0 35 36 2 16 53 34.5 53 102 -18 35 32 55 35 39 9 35 31 12 35 40 53 -0.30 173 0 0 35 46 5 16 53 37.8 54 103 -17 35 42 58 35 49 12 35 41 15 35 50 55 -0.30 174 0 0 35 55 47 16 53 41.2 55 104 -16 35 52 41 35 58 54 35 50 58 36 0 37 -0.30 175 0 0 36 5 11 16 53 44.5 55 105 -16 36 2 4 36 8 17 36 0 21 36 10 0 -0.30 176 0 0 36 14 14 16 53 47.9 56 106 -15 36 11 8 36 17 20 36 9 25 36 19 3 -0.30 177 0 0 36 22 58 16 53 51.3 57 107 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32 31 29 56 31 21 46 31 31 42 -0.30 -106 0 0 31 10 21 16 58 34.5 49 267 49 31 7 8 31 13 34 31 5 22 31 15 20 -0.30 -105 0 0 30 53 40 16 58 37.9 49 268 49 30 50 27 30 56 53 30 48 41 30 58 39 -0.30 -104 0 0 30 36 41 16 58 41.2 48 269 50 30 33 28 30 39 54 30 31 41 30 41 40 -0.30 -103 0 0 30 19 24 16 58 44.5 47 270 51 30 16 11 30 22 37 30 14 24 30 24 24 -0.30 -102 0 0 30 1 50 16 58 47.8 46 271 52 29 58 36 30 5 4 29 56 49 30 6 50 -0.30 -101 0 0 29 43 58 16 58 51.1 45 271 53 29 40 44 29 47 12 29 38 57 29 48 59 -0.30 -100 0 0 29 25 50 16 58 54.3 44 272 54 29 22 35 29 29 4 29 20 48 29 30 51 -0.30 - 99 0 0 29 7 24 16 58 57.5 43 273 54 29 4 10 29 10 39 29 2 22 29 12 26 -0.30 - 98 0 0 28 48 42 16 59 0.7 42 274 55 28 45 27 28 51 57 28 43 40 28 53 45 -0.30 - 97 0 0 28 29 44 16 59 3.8 41 274 56 28 26 29 28 32 59 28 24 41 28 34 47 -0.30 - 96 0 0 28 10 30 16 59 6.8 41 275 57 28 7 14 28 13 45 28 5 27 28 15 33 -0.31 - 95 0 0 27 51 0 16 59 9.8 40 276 58 27 47 44 27 54 15 27 45 56 27 56 3 -0.31 - 94 0 0 27 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71 18 9 22 18 16 1 18 7 33 18 17 51 -0.32 - 68 0 0 17 48 42 17 0 8.4 13 289 71 17 45 23 17 52 1 17 43 33 17 53 51 -0.33 - 67 0 0 17 24 40 17 0 9.5 12 289 71 17 21 21 17 27 59 17 19 31 17 29 49 -0.33 - 66 0 0 17 0 36 17 0 10.5 11 289 71 16 57 16 17 3 55 16 55 27 17 5 45 -0.33 - 65 0 0 16 36 30 17 0 11.4 10 290 70 16 33 10 16 39 49 16 31 21 16 41 39 -0.33 - 64 0 0 16 12 23 17 0 12.3 9 290 70 16 9 4 16 15 42 16 7 14 16 17 32 -0.34 - 63 0 0 15 48 16 17 0 13.0 8 290 70 15 44 57 15 51 35 15 43 7 15 53 25 -0.34 - 62 0 0 15 24 9 17 0 13.7 7 290 69 15 20 50 15 27 28 15 19 0 15 29 18 -0.35 - 61 0 0 15 0 3 17 0 14.2 6 291 69 14 56 44 15 3 22 14 54 55 15 5 12 -0.36 - 60 0 0 14 35 59 17 0 14.7 5 291 68 14 32 40 14 39 18 14 30 51 14 41 8 -0.37 - 59 0 0 14 11 57 17 0 15.1 4 291 68 14 8 38 14 15 16 14 6 49 14 17 5 -0.39 - 58 0 0 13 47 57 17 0 15.4 3 291 67 13 44 39 13 51 16 13 42 49 13 53 6 -0.42 - 57 0 0 13 24 1 17 0 15.5 2 292 67 13 20 42 13 27 20 13 18 53 13 29 9 -0.50 - 56 0 0 13 0 9 17 0 15.6 0 292 66 12 56 50 13 3 27 12 55 1 13 5 17 -0.92 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 1356-02368-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 56 36.3628 DE: +21 27 44.495 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 56 36.3632 DE: +21 27 44.494 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 10.1 * B mag [mag]: 10.5 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (13084) Virchow asteroid class: approx. diameter [km]: 11 approx. diameter ["]: 0.005 distance from Earth [AU]: 2.80880 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#43 date of fit: 2022 Nov 24 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): 0.011", 0.001", 90.278° remarks: * orbital elements for (13084)Virchow : Mean anomaly = 135.9589582625 deg Arg. of pericenter = 206.5853718786 deg Long. of node = 95.8908550076 deg Inclination = 5.8360674524 deg Eccentricity = 0.0499873522 Semimajor axis = 2.6251082355 AU Perihelion dist = 2.4938860256 AU Mag: H = 13.94, G = 0.15 Epoch of elements : MJD 60573.70551400 TDT (2024 Sep 20.7055) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#432022Nov24,0.46,2024,9,20,16.932357,0.012495,0.282715,13.320084,-0.638396,-0.005417,0.000506,-0.000001,0.000000 -149.5394,21.4312,-75.69,0.71,False TYC 1356-02368-1,6.94343408,21.4623597,10.49,10.09,9.87,0.1,0,,6.96791381,21.4312107,9.29,9.06,0,0,0 13084,Virchow,19.38,10.818,2.8088,0,0,2.987,-2.00,,0.8,0 0,135.7955,2024,9,20,206.5854,95.8909,5.8361,0.04999,2.62511,2.49389,13.94,5.0,0.15 1.276,0.0107,0.0014,90,0.0015,Known errors,1.48,0,-1,-1 20240920_2368-1,60140.57 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:47 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org