IOTA/IOTA-ES occultation update for (2127) Tanya / UCAC4 343-143279 event on 2023 Jul 14, 22:00 UT Visible from Europe, N Africa Summary ------- On 2023 Jul 14 UT, the 39.1 km diameter asteroid (2127) Tanya will occult a 11.7 mag star in the constellation Sagittarius for observers along a path across Europe, N Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.08 mag to 15.73 mag (the magnitude of the asteroid) for at most 3.210 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: 83 * date and approx. time of event: 2023 Jul 14, 21:56 - 2023 Jul 14, 22:05 * geocentric midpoint of event [JD]: 2460140.41733571 * magnitude of target star: 11.68 * magnitude drop [mag]: 4.08 * estimated maximum duration [s]: 3.210 * Moon: 8 % sunlit, 164° distance * Sun: 163° distance * rough path description: Europe, N Africa The occultation path -------------------- * approximate projected width [km]: 77 * 1 sigma uncertainty interval [path widths]: +/- 0.63 * 1 sigma uncertainty interval [seconds]: +/- 3.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.029, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.030", 0.001", 100°) * approx speed of asteroid's shadow [km/s]: 12.1702 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 343-143279 by 2127 Tanya on 2023 Jul 14 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 - 62 0 0 34 45 7 22 5 22.4 0 116 14 .. .. .. 34 21 30 .. .. .. 33 52 16 .... - 61 0 0 34 20 59 22 5 22.3 1 117 13 34 44 41 33 57 35 35 14 56 33 28 36 -0.59 - 60 0 0 33 57 50 22 5 21.9 2 117 12 34 21 19 33 34 38 34 51 18 33 5 54 -1.17 - 59 0 0 33 35 40 22 5 21.3 3 118 11 33 58 57 33 12 40 34 28 40 32 44 9 -1.36 - 58 0 0 33 14 28 22 5 20.4 4 119 10 33 37 35 32 51 39 34 7 3 32 23 21 -1.45 - 57 0 0 32 54 14 22 5 19.2 5 119 9 33 17 10 32 31 35 33 46 25 32 3 30 -1.51 - 56 0 0 32 34 58 22 5 17.8 5 120 8 32 57 44 32 12 29 33 26 46 31 44 35 -1.55 - 55 0 0 32 16 40 22 5 16.2 6 120 7 32 39 16 31 54 19 33 8 5 31 26 37 -1.58 - 54 0 0 31 59 18 22 5 14.3 7 121 7 32 21 46 31 37 6 32 50 23 31 9 34 -1.60 - 53 0 0 31 42 54 22 5 12.2 8 121 6 32 5 13 31 20 50 32 33 39 30 53 27 -1.61 - 52 0 0 31 27 25 22 5 9.9 9 122 5 31 49 37 31 5 29 32 17 53 30 38 15 -1.62 - 51 0 0 31 12 53 22 5 7.3 10 122 4 31 34 57 30 51 4 32 3 4 30 23 58 -1.63 - 50 0 0 30 59 16 22 5 4.5 11 123 3 31 21 14 30 37 34 31 49 11 30 10 36 -1.64 - 49 0 0 30 46 35 22 5 1.5 11 123 2 31 8 26 30 24 59 31 36 16 29 58 9 -1.65 - 48 0 0 30 34 50 22 4 58.3 12 124 1 30 56 35 30 13 19 31 24 17 29 46 36 -1.65 - 47 0 0 30 23 59 22 4 54.9 13 125 0 30 45 39 30 2 33 31 13 14 29 35 57 -1.66 - 46 0 0 30 14 3 22 4 51.3 14 125 0 30 35 38 29 52 42 31 3 6 29 26 11 -1.66 - 45 0 0 30 5 2 22 4 47.4 15 126 -1 30 26 32 29 43 45 30 53 54 29 17 19 -1.66 - 44 0 0 29 56 54 22 4 43.4 15 126 -2 30 18 21 29 35 42 30 45 38 29 9 21 -1.67 - 43 0 0 29 49 41 22 4 39.2 16 127 -3 30 11 4 29 28 32 30 38 16 29 2 16 -1.67 - 42 0 0 29 43 22 22 4 34.8 17 128 -4 30 4 42 29 22 16 30 31 50 28 56 4 -1.67 - 41 0 0 29 37 57 22 4 30.2 18 128 -4 29 59 13 29 16 54 30 26 18 28 50 44 -1.67 - 40 0 0 29 33 25 22 4 25.4 18 129 -5 29 54 39 29 12 24 30 21 40 28 46 18 -1.68 - 39 0 0 29 29 46 22 4 20.5 19 129 -6 29 50 58 29 8 47 30 17 57 28 42 43 -1.68 - 38 0 0 29 27 1 22 4 15.4 20 130 -7 29 48 11 29 6 4 30 15 8 28 40 2 -1.68 - 37 0 0 29 25 8 22 4 10.1 20 131 -8 29 46 18 29 4 12 30 13 12 28 38 12 -1.68 - 36 0 0 29 24 9 22 4 4.6 21 132 -8 29 45 17 29 3 14 30 12 11 28 37 14 -1.68 - 35 0 0 29 24 2 22 3 59.0 22 132 -9 29 45 10 29 3 7 30 12 3 28 37 8 -1.68 - 34 0 0 29 24 48 22 3 53.3 22 133 -10 29 45 56 29 3 54 30 12 49 28 37 55 -1.68 - 33 0 0 29 26 27 22 3 47.4 23 134 -10 29 47 35 29 5 32 30 14 28 28 39 33 -1.68 - 32 0 0 29 28 58 22 3 41.3 23 134 -11 29 50 6 29 8 2 30 17 1 28 42 2 -1.69 - 31 0 0 29 32 21 22 3 35.1 24 135 -12 29 53 31 29 11 24 30 20 26 28 45 23 -1.69 - 30 0 0 29 36 37 22 3 28.8 25 136 -12 29 57 48 29 15 39 30 24 46 28 49 36 -1.69 - 29 0 0 29 41 45 22 3 22.4 25 137 -13 30 2 58 29 20 45 30 29 58 28 54 40 -1.69 - 28 0 0 29 47 45 22 3 15.8 26 138 -14 30 9 1 29 26 44 30 36 4 29 0 36 -1.69 - 27 0 0 29 54 38 22 3 9.1 26 138 -14 30 15 56 29 33 34 30 43 2 29 7 23 -1.69 - 26 0 0 30 2 23 22 3 2.2 26 139 -15 30 23 44 29 41 16 30 50 54 29 15 1 -1.69 - 25 0 0 30 11 0 22 2 55.3 27 140 -16 30 32 25 29 49 50 30 59 39 29 23 31 -1.69 - 24 0 0 30 20 30 22 2 48.2 27 141 -16 30 41 58 29 59 16 31 9 18 29 32 53 -1.69 - 23 0 0 30 30 52 22 2 41.1 28 142 -17 30 52 24 30 9 33 31 19 49 29 43 5 -1.69 - 22 0 0 30 42 6 22 2 33.8 28 143 -17 31 3 43 30 20 43 31 31 14 29 54 9 -1.69 - 21 0 0 30 54 12 22 2 26.5 28 144 -18 31 15 54 30 32 44 31 43 32 30 6 5 -1.69 - 20 0 0 31 7 11 22 2 19.0 29 145 -18 31 28 58 30 45 38 31 56 43 30 18 52 -1.70 - 19 0 0 31 21 2 22 2 11.5 29 145 -19 31 42 56 30 59 23 32 10 48 30 32 30 -1.70 - 18 0 0 31 35 46 22 2 3.9 29 146 -19 31 57 46 31 14 1 32 25 47 30 47 0 -1.70 - 17 0 0 31 51 22 22 1 56.2 30 147 -20 32 13 29 31 29 30 32 41 39 31 2 22 -1.70 - 16 0 0 32 7 51 22 1 48.5 30 148 -20 32 30 6 31 45 53 32 58 25 31 18 36 -1.70 - 15 0 0 32 25 13 22 1 40.6 30 149 -20 32 47 36 32 3 7 33 16 6 31 35 41 -1.70 - 14 0 0 32 43 28 22 1 32.8 30 150 -21 33 5 59 32 21 14 33 34 40 31 53 38 -1.70 - 13 0 0 33 2 36 22 1 24.8 30 151 -21 33 25 16 32 40 13 33 54 9 32 12 27 -1.70 - 12 0 0 33 22 38 22 1 16.9 30 153 -21 33 45 26 33 0 5 34 14 32 32 32 8 -1.71 - 11 0 0 33 43 32 22 1 8.8 30 154 -22 34 6 31 33 20 50 34 35 49 32 52 42 -1.71 - 10 0 0 34 5 20 22 1 0.8 30 155 -22 34 28 29 33 42 28 34 58 1 33 14 7 -1.71 - 9 0 0 34 28 2 22 0 52.7 30 156 -22 34 51 22 34 4 59 35 21 9 33 36 25 -1.71 - 8 0 0 34 51 37 22 0 44.6 30 157 -22 35 15 9 34 28 23 35 45 11 33 59 35 -1.71 - 7 0 0 35 16 6 22 0 36.5 30 158 -23 35 39 50 34 52 40 36 10 9 34 23 38 -1.71 - 6 0 0 35 41 29 22 0 28.3 30 159 -23 36 5 26 35 17 50 36 36 2 34 48 33 -1.71 - 5 0 0 36 7 46 22 0 20.2 30 160 -23 36 31 57 35 43 54 37 2 51 35 14 21 -1.72 - 4 0 0 36 34 57 22 0 12.1 30 161 -23 36 59 23 36 10 52 37 30 36 35 41 2 -1.72 - 3 0 0 37 3 3 22 0 4.0 30 162 -23 37 27 44 36 38 43 37 59 18 36 8 36 -1.72 - 2 0 0 37 32 4 21 59 55.9 29 163 -23 37 57 1 37 7 28 38 28 56 36 37 3 -1.72 - 1 0 0 38 2 0 21 59 47.8 29 164 -23 38 27 14 37 37 8 38 59 31 37 6 23 -1.72 0 0 0 38 32 50 21 59 39.8 29 165 -23 38 58 22 38 7 42 39 31 3 37 36 37 -1.73 1 0 0 39 4 36 21 59 31.8 28 166 -23 39 30 27 38 39 10 40 3 32 38 7 43 -1.73 2 0 0 39 37 17 21 59 23.8 28 168 -23 40 3 28 39 11 32 40 36 59 38 39 43 -1.73 3 0 0 40 10 54 21 59 15.9 28 169 -23 40 37 25 39 44 49 41 11 24 39 12 37 -1.73 4 0 0 40 45 27 21 59 8.1 27 170 -23 41 12 20 40 19 1 41 46 48 39 46 24 -1.73 5 0 0 41 20 55 21 59 0.4 27 171 -22 41 48 11 40 54 8 42 23 9 40 21 5 -1.74 6 0 0 41 57 19 21 58 52.7 26 172 -22 42 24 59 41 30 9 43 0 30 40 56 39 -1.74 7 0 0 42 34 40 21 58 45.2 26 173 -22 43 2 45 42 7 5 43 38 50 41 33 7 -1.74 8 0 0 43 12 57 21 58 37.7 25 174 -22 43 41 29 42 44 57 44 18 10 42 10 28 -1.74 9 0 0 43 52 10 21 58 30.4 25 175 -21 44 21 10 43 23 43 44 58 30 42 48 43 -1.75 10 0 0 44 32 20 21 58 23.2 24 176 -21 45 1 50 44 3 25 45 39 49 43 27 52 -1.75 11 0 0 45 13 26 21 58 16.1 23 177 -21 45 43 28 44 44 2 46 22 10 44 7 54 -1.75 12 0 0 45 55 29 21 58 9.1 23 178 -20 46 26 4 45 25 34 47 5 31 44 48 50 -1.75 13 0 0 46 38 29 21 58 2.3 22 179 -20 47 9 39 46 8 1 47 49 55 45 30 38 -1.76 14 0 0 47 22 26 21 57 55.7 21 180 -19 47 54 14 46 51 23 48 35 20 46 13 19 -1.76 15 0 0 48 7 20 21 57 49.3 21 181 -19 48 39 47 47 35 40 49 21 48 46 56 54 -1.76 16 0 0 48 53 11 21 57 43.0 20 182 -18 49 26 21 48 20 53 50 9 19 47 41 21 -1.76 17 0 0 49 40 0 21 57 37.0 19 183 -18 50 13 54 49 7 0 50 57 54 48 26 41 -1.77 18 0 0 50 27 46 21 57 31.1 18 184 -17 51 2 27 49 54 2 51 47 33 49 12 52 -1.77 19 0 0 51 16 29 21 57 25.5 17 185 -16 51 52 1 50 41 59 52 38 17 49 59 56 -1.77 20 0 0 52 6 9 21 57 20.1 16 186 -16 52 42 35 51 30 50 53 30 7 50 47 50 -1.78 21 0 0 52 56 47 21 57 15.0 16 186 -15 53 34 10 52 20 35 54 23 3 51 36 36 -1.78 22 0 0 53 48 21 21 57 10.1 15 187 -14 54 26 46 53 11 13 55 17 7 52 26 12 -1.78 23 0 0 54 40 53 21 57 5.5 14 188 -13 55 20 24 54 2 45 56 12 19 53 16 36 -1.79 24 0 0 55 34 21 21 57 1.1 13 189 -13 56 15 4 54 55 10 57 8 41 54 7 50 -1.79 25 0 0 56 28 47 21 56 57.1 12 190 -12 57 10 46 55 48 28 58 6 15 54 59 52 -1.80 26 0 0 57 24 9 21 56 53.3 11 191 -11 58 7 31 56 42 37 59 5 2 55 52 40 -1.81 27 0 0 58 20 29 21 56 49.9 10 192 -10 59 5 20 57 37 38 60 5 4 56 46 15 -1.81 28 0 0 59 17 45 21 56 46.8 9 193 -9 60 4 14 58 33 30 61 6 25 57 40 34 -1.82 29 0 0 60 15 58 21 56 44.0 8 194 -8 61 4 13 59 30 11 62 9 6 58 35 37 -1.83 30 0 0 61 15 7 21 56 41.6 7 195 -7 62 5 19 60 27 41 63 13 13 59 31 22 -1.85 31 0 0 62 15 13 21 56 39.5 5 195 -6 63 7 33 61 26 0 64 18 50 60 27 47 -1.87 32 0 0 63 16 16 21 56 37.9 4 196 -5 64 10 58 62 25 6 65 26 5 61 24 51 -1.90 33 0 0 64 18 16 21 56 36.6 3 197 -4 65 15 35 63 24 58 66 35 4 62 22 31 -1.96 34 0 0 65 21 13 21 56 35.6 2 198 -3 66 21 29 64 25 34 .. .. .. 63 20 46 -2.08 35 0 0 66 25 7 21 56 35.1 1 199 -2 .. .. .. 65 26 54 .. .. .. 64 19 32 -2.48 36 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 66 28 55 .. .. .. 65 18 47 .... 37 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 66 18 28 .... Uncertainty in time = +/- 4 secs Prediction of 2023 May 14.2 Data for the target star ------------------------ * name: UCAC4 343-143279 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 23 14.5552 DE: -21 25 05.382 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 23 14.5552 DE: -21 25 05.382 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2127) Tanya asteroid class: approx. diameter [km]: 39 approx. diameter ["]: 0.025 distance from Earth [AU]: 2.12450 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 date of fit: 2023 Apr 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): 0.030", 0.001", 100.394° remarks: * orbital elements for (2127)Tanya : Mean anomaly = 346.2951295176 deg Arg. of pericenter = 188.8185965268 deg Long. of node = 106.3556975225 deg Inclination = 13.0940432642 deg Eccentricity = 0.0314644055 Semimajor axis = 3.2102750048 AU Perihelion dist = 3.1092656104 AU Mag: H = 11.24, G = 0.15 Epoch of elements : MJD 60139.91729167 TDT (2023 Jul 14.9173) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Apr24,3.21,2023,7,14,22.016057,-0.324037,0.798700,-6.365334,-2.582369,0.001594,-0.000115,0.000001,0.000000 13.4168,-21.4064,-148.75,21.61,False UCAC4 343-143279,18.38737645,-21.4181616,0.00,11.68,0.00,0.0,0,,18.41112310,-21.4063570,4.08,0.00,0,0,0 2127,Tanya,15.73,39.1,2.1245,0,0,-1.886,-10.69,,2.4,0 0,346.1379,2023,7,14,188.8186,106.3557,13.0940,0.03146,3.21028,3.10927,11.19,5.0,0.15 1.628,0.0297,0.0008,100,0.0159,Known errors,-1.00,-1,-1,-1 20230714_143279,60078.17 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 May 14, 04:02 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org