IOTA/IOTA-ES occultation update for (1859) Kovalevskaya / TYC 7414-00737-1 event on 2023 Jun 05, 02:24 UT Visible from Europe, N Africa Summary ------- On 2023 Jun 05 UT, the 46.8 km diameter asteroid (1859) Kovalevskaya will occult a 12.2 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 3.35 mag to 15.46 mag (the magnitude of the asteroid) for at most 5.930 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 Jun 05, 02:18 - 2023 Jun 05, 02:29 * geocentric midpoint of event [JD]: 2460100.60014117 * magnitude of target star: 12.16 * magnitude drop [mag]: 3.35 * estimated maximum duration [s]: 5.930 * Moon: 99 % sunlit, 19° distance * Sun: 148° distance * rough path description: Europe, N Africa The occultation path -------------------- * approximate projected width [km]: 123 * 1 sigma uncertainty interval [path widths]: +/- 0.15 * 1 sigma uncertainty interval [seconds]: +/- 6.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.031, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.032", 0.004", 79°) * approx speed of asteroid's shadow [km/s]: 7.8861 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7414-00737-1 by 1859 Kovalevskaya on 2023 Jun 5 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 - 59 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 40 50 26 .... - 58 0 0 41 7 43 2 29 16.1 0 137 -24 .. .. .. 40 19 10 .. .. .. 40 4 52 .... - 57 0 0 40 22 36 2 29 15.5 2 137 -25 41 11 50 39 35 43 41 27 20 39 21 52 -1.34 - 56 0 0 39 40 8 2 29 14.2 3 138 -26 40 27 41 38 54 43 40 42 36 38 41 17 -1.84 - 55 0 0 39 0 8 2 29 12.2 4 138 -27 39 46 12 38 16 1 40 0 37 38 2 57 -2.05 - 54 0 0 38 22 27 2 29 9.6 5 139 -27 39 7 11 37 39 29 39 21 11 37 26 45 -2.17 - 53 0 0 37 46 56 2 29 6.5 6 140 -28 38 30 30 37 5 1 38 44 7 36 52 35 -2.24 - 52 0 0 37 13 30 2 29 2.8 6 140 -29 37 56 1 36 32 32 38 9 16 36 20 21 -2.28 - 51 0 0 36 42 2 2 28 58.6 7 141 -30 37 23 36 36 1 54 37 36 33 35 49 58 -2.32 - 50 0 0 36 12 27 2 28 54.0 8 142 -30 36 53 11 35 33 6 37 5 51 35 21 23 -2.34 - 49 0 0 35 44 41 2 28 48.9 9 142 -31 36 24 38 35 6 1 36 37 4 34 54 30 -2.36 - 48 0 0 35 18 40 2 28 43.3 10 143 -31 35 57 56 34 40 38 36 10 7 34 29 18 -2.37 - 47 0 0 34 54 20 2 28 37.4 11 143 -32 35 32 58 34 16 53 35 44 57 34 5 42 -2.39 - 46 0 0 34 31 39 2 28 31.0 11 144 -33 35 9 42 33 54 43 35 21 30 33 43 41 -2.39 - 45 0 0 34 10 33 2 28 24.3 12 145 -33 34 48 5 33 34 5 34 59 43 33 23 12 -2.40 - 44 0 0 33 50 59 2 28 17.3 13 145 -33 34 28 3 33 14 58 34 39 33 33 4 12 -2.41 - 43 0 0 33 32 57 2 28 9.9 14 146 -34 34 9 36 32 57 19 34 20 57 32 46 40 -2.41 - 42 0 0 33 16 24 2 28 2.2 14 147 -34 33 52 40 32 41 6 34 3 53 32 30 34 -2.42 - 41 0 0 33 1 18 2 27 54.2 15 147 -35 33 37 13 32 26 19 33 48 20 32 15 52 -2.42 - 40 0 0 32 47 37 2 27 45.9 16 148 -35 33 23 14 32 12 56 33 34 15 32 2 33 -2.42 - 39 0 0 32 35 21 2 27 37.3 16 149 -35 33 10 41 32 0 54 33 21 37 31 50 36 -2.42 - 38 0 0 32 24 27 2 27 28.5 17 149 -35 32 59 33 31 50 14 33 10 24 31 40 0 -2.42 - 37 0 0 32 14 55 2 27 19.4 17 150 -35 32 49 49 31 40 54 33 0 36 31 30 44 -2.43 - 36 0 0 32 6 45 2 27 10.0 18 151 -36 32 41 27 31 32 54 32 52 11 31 22 46 -2.43 - 35 0 0 31 59 54 2 27 0.5 18 152 -36 32 34 27 31 26 11 32 45 8 31 16 6 -2.43 - 34 0 0 31 54 22 2 26 50.7 19 152 -36 32 28 48 31 20 47 32 39 26 31 10 44 -2.43 - 33 0 0 31 50 10 2 26 40.8 19 153 -36 32 24 29 31 16 40 32 35 6 31 6 38 -2.43 - 32 0 0 31 47 15 2 26 30.6 20 154 -36 32 21 30 31 13 49 32 32 5 31 3 49 -2.43 - 31 0 0 31 45 38 2 26 20.3 20 155 -36 32 19 51 31 12 15 32 30 25 31 2 15 -2.43 - 30 0 0 31 45 19 2 26 9.8 20 155 -35 32 19 30 31 11 57 32 30 4 31 1 58 -2.43 - 29 0 0 31 46 17 2 25 59.1 21 156 -35 32 20 28 31 12 55 32 31 2 31 2 55 -2.44 - 28 0 0 31 48 32 2 25 48.3 21 157 -35 32 22 45 31 15 9 32 33 19 31 5 9 -2.44 - 27 0 0 31 52 5 2 25 37.3 21 158 -35 32 26 21 31 18 38 32 36 56 31 8 37 -2.44 - 26 0 0 31 56 55 2 25 26.2 21 158 -35 32 31 15 31 23 24 32 41 52 31 13 22 -2.44 - 25 0 0 32 3 2 2 25 15.0 22 159 -34 32 37 29 31 29 25 32 48 8 31 19 21 -2.44 - 24 0 0 32 10 27 2 25 3.6 22 160 -34 32 45 2 31 36 43 32 55 44 31 26 37 -2.44 - 23 0 0 32 19 11 2 24 52.2 22 161 -34 32 53 55 31 45 18 33 4 39 31 35 9 -2.45 - 22 0 0 32 29 13 2 24 40.7 22 162 -33 33 4 8 31 55 9 33 14 56 31 44 58 -2.45 - 21 0 0 32 40 34 2 24 29.1 22 163 -33 33 15 43 32 6 19 33 26 35 31 56 4 -2.45 - 20 0 0 32 53 16 2 24 17.4 22 164 -33 33 28 39 32 18 47 33 39 36 32 8 28 -2.45 - 19 0 0 33 7 19 2 24 5.7 22 164 -32 33 42 59 32 32 34 33 54 1 32 22 11 -2.46 - 18 0 0 33 22 44 2 23 53.9 22 165 -32 33 58 42 32 47 42 34 9 51 32 37 14 -2.46 - 17 0 0 33 39 32 2 23 42.0 22 166 -31 34 15 51 33 4 11 34 27 6 32 53 37 -2.46 - 16 0 0 33 57 45 2 23 30.2 22 167 -30 34 34 27 33 22 3 34 45 50 33 11 23 -2.47 - 15 0 0 34 17 24 2 23 18.3 22 168 -30 34 54 33 33 41 19 35 6 3 33 30 32 -2.47 - 14 0 0 34 38 31 2 23 6.4 22 169 -29 35 16 8 34 2 0 35 27 48 33 51 6 -2.47 - 13 0 0 35 1 8 2 22 54.5 21 170 -29 35 39 16 34 24 8 35 51 6 34 13 6 -2.48 - 12 0 0 35 25 17 2 22 42.7 21 170 -28 36 4 0 34 47 46 36 16 1 34 36 35 -2.48 - 11 0 0 35 51 1 2 22 30.8 21 171 -27 36 30 21 35 12 55 36 42 34 35 1 34 -2.49 - 10 0 0 36 18 22 2 22 19.1 20 172 -26 36 58 24 35 39 38 37 10 51 35 28 6 -2.50 - 9 0 0 36 47 23 2 22 7.3 20 173 -26 37 28 11 36 7 57 37 40 53 35 56 13 -2.50 - 8 0 0 37 18 8 2 21 55.7 20 174 -25 37 59 47 36 37 56 38 12 46 36 25 59 -2.51 - 7 0 0 37 50 41 2 21 44.1 19 175 -24 38 33 17 37 9 39 38 46 35 36 57 27 -2.51 - 6 0 0 38 25 7 2 21 32.7 19 176 -23 39 8 47 37 43 9 39 22 25 37 30 42 -2.52 - 5 0 0 39 1 32 2 21 21.3 18 176 -22 39 46 22 38 18 31 40 0 23 38 5 46 -2.53 - 4 0 0 39 40 1 2 21 10.1 18 177 -21 40 26 10 38 55 51 40 40 37 38 42 46 -2.54 - 3 0 0 40 20 43 2 20 59.1 17 178 -20 41 8 20 39 35 14 41 23 17 39 21 48 -2.54 - 2 0 0 41 3 45 2 20 48.3 16 179 -19 41 53 3 40 16 49 42 8 35 40 2 58 -2.55 - 1 0 0 41 49 18 2 20 37.6 15 180 -18 42 40 33 41 0 43 42 56 43 40 46 25 -2.56 0 0 0 42 37 35 2 20 27.3 15 181 -17 43 31 4 41 47 7 43 48 1 41 32 17 -2.57 1 0 0 43 28 52 2 20 17.2 14 182 -16 44 24 58 42 36 13 44 42 49 42 20 48 -2.59 2 0 0 44 23 29 2 20 7.4 13 182 -15 45 22 41 43 28 17 45 41 38 43 12 10 -2.60 3 0 0 45 21 51 2 19 57.9 12 183 -14 46 24 50 44 23 37 46 45 8 44 6 42 -2.62 4 0 0 46 24 32 2 19 48.9 11 184 -13 47 32 14 45 22 39 47 54 14 45 4 47 -2.64 5 0 0 47 32 21 2 19 40.3 10 185 -11 48 46 5 46 25 56 49 10 23 46 6 55 -2.66 6 0 0 48 46 24 2 19 32.3 8 186 -10 50 8 20 47 34 13 50 35 54 47 13 44 -2.70 7 0 0 50 8 30 2 19 25.0 7 186 -8 51 42 24 48 48 34 52 15 8 48 26 13 -2.76 8 0 0 51 41 44 2 19 18.5 5 187 -7 53 35 32 50 10 40 54 18 17 49 45 47 -2.87 9 0 0 53 32 25 2 19 13.3 3 188 -5 56 10 57 51 43 21 .. .. .. 51 14 46 -3.15 10 0 0 55 58 45 2 19 10.1 1 189 -3 .. .. .. 53 32 13 .. .. .. 52 57 29 -5.76 11 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 55 52 13 .. .. .. 55 4 2 .... Uncertainty in time = +/- 6 secs Prediction of 2023 Apr 29.2 Data for the target star ------------------------ * name: TYC 7414-00737-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 08 43.5124 DE: -32 55 59.222 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 08 43.5125 DE: -32 55 59.222 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1859) Kovalevskaya asteroid class: approx. diameter [km]: 47 approx. diameter ["]: 0.031 distance from Earth [AU]: 2.07080 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#54 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): 0.032", 0.004", 78.516° remarks: * orbital elements for (1859)Kovalevskaya : Mean anomaly = 38.3281729601 deg Arg. of pericenter = 245.1179077781 deg Long. of node = 343.2587665963 deg Inclination = 7.6985198777 deg Eccentricity = 0.0973602820 Semimajor axis = 3.2103999123 AU Perihelion dist = 2.8978344713 AU Mag: H = 10.85, G = 0.15 Epoch of elements : MJD 60100.10013889 TDT (2023 Jun 05.1001) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr24,5.93,2023,6,5,2.403388,-0.256767,0.888724,-4.276366,-1.234992,-0.002945,0.000510,0.000001,0.000000 -1.7489,-32.8953,143.56,22.50,False TYC 7414-00737-1,19.14542011,-32.9331172,0.00,12.16,0.00,0.0,0,,19.17098981,-32.8952955,3.35,0.00,0,0,0 1859,Kovalevskaya,15.46,46.8,2.0708,0,0,-1.441,-5.24,,2.4,0 0,38.3110,2023,6,5,245.1179,343.2588,7.6985,0.09736,3.21040,2.89783,10.84,5.0,0.15 1.152,0.0317,0.0040,79,0.0047,Known errors,-1.00,-1,-1,-1 20230605_0737-1,60063.19 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Apr 29, 04:34 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org