IOTA/IOTA-ES occultation update for (3074) Popov / TYC 6877-00652-1 event on 2024 Sep 17, 12:55 UT Visible from Summary ------- On 2024 Sep 17 UT, the 9.85191155698713 km diameter asteroid (3074) Popov will occult a 11.3 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.36 mag to 18.63 mag (the magnitude of the asteroid) for at most 1.320 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 17, 12:47 - 2024 Sep 17, 13:03 * geocentric midpoint of event [JD]: 2460571.03870279 * magnitude of target star: 11.27 * magnitude drop [mag]: 7.36 * estimated maximum duration [s]: 1.320 * Moon: 100 % sunlit, 64° distance * Sun: 109° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 18 * 1 sigma uncertainty interval [path widths]: +/- 0.33 * 1 sigma uncertainty interval [seconds]: +/- 2.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.001", 82°) * approx speed of asteroid's shadow [km/s]: 7.5655 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6877-00652-1 by 3074 Popov on 2024 Sep 17 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 26 0 0 35 47 36 12 47 54.9 0 121 40 35 42 2 35 53 10 35 38 24 35 56 51 .... 27 0 0 35 18 36 12 47 55.1 1 122 40 35 13 5 35 24 7 35 9 27 35 27 46 -0.66 28 0 0 34 50 20 12 47 55.8 2 122 39 34 44 51 34 55 49 34 41 16 34 59 26 -1.01 29 0 0 34 22 49 12 47 57.0 3 123 39 34 17 23 34 28 16 34 13 49 34 31 51 -1.14 30 0 0 33 56 4 12 47 58.5 4 124 38 33 50 40 34 1 29 33 47 7 34 5 3 -1.22 31 0 0 33 30 5 12 48 0.4 5 124 38 33 24 44 33 35 28 33 21 12 33 39 0 -1.26 32 0 0 33 4 53 12 48 2.7 6 125 37 32 59 34 33 10 14 32 56 4 33 13 45 -1.30 33 0 0 32 40 29 12 48 5.5 7 125 37 32 35 12 32 45 47 32 31 43 32 49 17 -1.32 34 0 0 32 16 53 12 48 8.6 8 126 36 32 11 37 32 22 9 32 8 10 32 25 38 -1.34 35 0 0 31 54 4 12 48 12.1 9 126 36 31 48 51 31 59 19 31 45 25 32 2 46 -1.35 36 0 0 31 32 5 12 48 16.0 10 127 35 31 26 53 31 37 17 31 23 28 31 40 43 -1.37 37 0 0 31 10 54 12 48 20.3 10 127 34 31 5 44 31 16 5 31 2 20 31 19 30 -1.38 38 0 0 30 50 33 12 48 25.0 11 128 33 30 45 24 30 55 42 30 42 2 30 59 6 -1.38 39 0 0 30 31 1 12 48 30.1 12 129 33 30 25 54 30 36 9 30 22 33 30 39 32 -1.39 40 0 0 30 12 20 12 48 35.5 13 129 32 30 7 14 30 17 26 30 3 54 30 20 48 -1.40 41 0 0 29 54 29 12 48 41.3 14 130 31 29 49 24 29 59 33 29 46 5 30 2 54 -1.41 42 0 0 29 37 28 12 48 47.5 15 130 31 29 32 25 29 42 31 29 29 6 29 45 52 -1.41 43 0 0 29 21 18 12 48 54.0 16 131 30 29 16 16 29 26 20 29 12 58 29 29 40 -1.42 44 0 0 29 5 59 12 49 0.8 17 132 29 29 0 59 29 11 1 28 57 41 29 14 19 -1.42 45 0 0 28 51 32 12 49 8.0 17 132 28 28 46 33 28 56 32 28 43 16 28 59 50 -1.43 46 0 0 28 37 56 12 49 15.6 18 133 27 28 32 58 28 42 56 28 29 42 28 46 13 -1.43 47 0 0 28 25 13 12 49 23.4 19 134 26 28 20 15 28 30 11 28 17 0 28 33 27 -1.44 48 0 0 28 13 21 12 49 31.6 20 134 26 28 8 24 28 18 18 28 5 9 28 21 34 -1.44 49 0 0 28 2 22 12 49 40.1 21 135 25 27 57 26 28 7 18 27 54 11 28 10 34 -1.44 50 0 0 27 52 15 12 49 49.0 21 136 24 27 47 20 27 57 11 27 44 6 28 0 26 -1.45 51 0 0 27 43 1 12 49 58.1 22 136 23 27 38 6 27 47 56 27 34 53 27 51 11 -1.45 52 0 0 27 34 40 12 50 7.5 23 137 22 27 29 45 27 39 34 27 26 32 27 42 48 -1.45 53 0 0 27 27 11 12 50 17.2 24 138 21 27 22 18 27 32 5 27 19 5 27 35 19 -1.46 54 0 0 27 20 36 12 50 27.2 24 138 20 27 15 43 27 25 30 27 12 31 27 28 44 -1.46 55 0 0 27 14 55 12 50 37.4 25 139 19 27 10 2 27 19 48 27 6 50 27 23 2 -1.46 56 0 0 27 10 7 12 50 48.0 26 140 19 27 5 15 27 15 1 27 2 3 27 18 14 -1.47 57 0 0 27 6 13 12 50 58.8 26 141 18 27 1 21 27 11 6 26 58 9 27 14 19 -1.47 58 0 0 27 3 13 12 51 9.8 27 142 17 26 58 21 27 8 6 26 55 9 27 11 19 -1.47 59 0 0 27 1 7 12 51 21.1 27 143 16 26 56 15 27 6 0 26 53 3 27 9 13 -1.47 60 0 0 26 59 56 12 51 32.6 28 143 15 26 55 4 27 4 49 26 51 52 27 8 2 -1.47 61 0 0 26 59 39 12 51 44.3 29 144 14 26 54 47 27 4 32 26 51 35 27 7 45 -1.48 62 0 0 27 0 17 12 51 56.3 29 145 13 26 55 24 27 5 10 26 52 12 27 8 23 -1.48 63 0 0 27 1 49 12 52 8.4 30 146 12 26 56 56 27 6 42 26 53 44 27 9 56 -1.48 64 0 0 27 4 16 12 52 20.8 30 147 11 26 59 23 27 9 10 26 56 11 27 12 23 -1.48 65 0 0 27 7 38 12 52 33.3 31 148 10 27 2 45 27 12 32 26 59 32 27 15 46 -1.48 66 0 0 27 11 56 12 52 46.1 31 149 9 27 7 2 27 16 50 27 3 49 27 20 4 -1.48 67 0 0 27 17 9 12 52 59.0 31 150 8 27 12 14 27 22 4 27 9 1 27 25 18 -1.49 68 0 0 27 23 17 12 53 12.0 32 151 7 27 18 22 27 28 12 27 15 8 27 31 27 -1.49 69 0 0 27 30 20 12 53 25.2 32 152 6 27 25 24 27 35 16 27 22 10 27 38 31 -1.49 70 0 0 27 38 19 12 53 38.6 32 153 5 27 33 22 27 43 16 27 30 8 27 46 32 -1.49 71 0 0 27 47 13 12 53 52.1 33 154 5 27 42 16 27 52 11 27 39 1 27 55 28 -1.49 72 0 0 27 57 3 12 54 5.7 33 155 4 27 52 5 28 2 2 27 48 49 28 5 19 -1.49 73 0 0 28 7 49 12 54 19.4 33 156 3 28 2 50 28 12 49 27 59 33 28 16 7 -1.49 74 0 0 28 19 31 12 54 33.3 33 157 2 28 14 30 28 24 32 28 11 13 28 27 50 -1.49 75 0 0 28 32 8 12 54 47.2 34 159 1 28 27 7 28 37 10 28 23 49 28 40 30 -1.49 76 0 0 28 45 42 12 55 1.2 34 160 0 28 40 39 28 50 45 28 37 20 28 54 5 -1.49 77 0 0 29 0 11 12 55 15.2 34 161 -1 28 55 7 29 5 16 28 51 48 29 8 37 -1.49 78 0 0 29 15 36 12 55 29.4 34 162 -2 29 10 31 29 20 42 29 7 10 29 24 4 -1.49 79 0 0 29 31 57 12 55 43.5 34 163 -3 29 26 50 29 37 5 29 23 29 29 40 27 -1.49 80 0 0 29 49 13 12 55 57.7 34 164 -4 29 44 5 29 54 22 29 40 43 29 57 46 -1.49 81 0 0 30 7 25 12 56 11.9 34 165 -5 30 2 15 30 12 36 29 58 52 30 16 1 -1.49 82 0 0 30 26 33 12 56 26.1 34 167 -6 30 21 22 30 31 46 30 17 57 30 35 12 -1.49 83 0 0 30 46 37 12 56 40.4 34 168 -6 30 41 24 30 51 52 30 37 58 30 55 19 -1.49 84 0 0 31 7 36 12 56 54.5 33 169 -7 31 2 21 31 12 53 30 58 54 31 16 21 -1.49 85 0 0 31 29 31 12 57 8.7 33 170 -8 31 24 13 31 34 49 31 20 45 31 38 19 -1.49 86 0 0 31 52 21 12 57 22.8 33 171 -9 31 47 1 31 57 41 31 43 31 32 1 12 -1.49 87 0 0 32 16 5 12 57 36.9 33 173 -10 32 10 43 32 21 28 32 7 12 32 25 0 -1.49 88 0 0 32 40 44 12 57 50.8 32 174 -11 32 35 20 32 46 9 32 31 47 32 49 43 -1.49 89 0 0 33 6 17 12 58 4.7 32 175 -11 33 0 50 33 11 45 32 57 16 33 15 21 -1.48 90 0 0 33 32 44 12 58 18.5 32 176 -12 33 27 15 33 38 14 33 23 39 33 41 52 -1.48 91 0 0 34 0 5 12 58 32.2 31 177 -13 33 54 33 34 5 38 33 50 55 34 9 17 -1.48 92 0 0 34 28 19 12 58 45.7 31 178 -14 34 22 44 34 33 54 34 19 5 34 37 35 -1.48 93 0 0 34 57 25 12 58 59.1 30 179 -14 34 51 48 35 3 4 34 48 7 35 6 47 -1.48 94 0 0 35 27 24 12 59 12.3 30 181 -15 35 21 44 35 33 5 35 18 1 35 36 50 -1.48 95 0 0 35 58 14 12 59 25.3 29 182 -16 35 52 31 36 3 59 35 48 46 36 7 46 -1.48 96 0 0 36 29 56 12 59 38.2 29 183 -17 36 24 9 36 35 43 36 20 22 36 39 32 -1.48 97 0 0 37 2 27 12 59 50.8 28 184 -17 36 56 38 37 8 18 36 52 48 37 12 9 -1.48 98 0 0 37 35 48 13 0 3.2 28 185 -18 37 29 55 37 41 42 37 26 4 37 45 36 -1.48 99 0 0 38 9 58 13 0 15.4 27 186 -19 38 4 1 38 15 55 38 0 7 38 19 51 -1.47 100 0 0 38 44 56 13 0 27.3 26 187 -19 38 38 56 38 50 57 38 34 59 38 54 55 -1.47 101 0 0 39 20 41 13 0 39.0 26 188 -20 39 14 37 39 26 46 39 10 38 39 30 46 -1.47 102 0 0 39 57 11 13 0 50.3 25 189 -20 39 51 4 40 3 20 39 47 3 40 7 24 -1.47 103 0 0 40 34 27 13 1 1.4 24 190 -21 40 28 15 40 40 40 40 24 12 40 44 46 -1.47 104 0 0 41 12 26 13 1 12.2 23 191 -21 41 6 11 41 18 43 41 2 4 41 22 52 -1.47 105 0 0 41 51 9 13 1 22.6 23 192 -22 41 44 49 41 57 30 41 40 39 42 1 41 -1.47 106 0 0 42 30 32 13 1 32.7 22 193 -22 42 24 8 42 36 58 42 19 56 42 41 12 -1.47 107 0 0 43 10 36 13 1 42.4 21 194 -23 43 4 7 43 17 6 42 59 52 43 21 23 -1.47 108 0 0 43 51 18 13 1 51.8 20 195 -23 43 44 44 43 57 53 43 40 26 44 2 13 -1.47 109 0 0 44 32 37 13 2 0.8 19 196 -23 44 25 59 44 39 17 44 21 38 44 43 40 -1.47 110 0 0 45 14 32 13 2 9.4 18 197 -24 45 7 49 45 21 16 45 3 25 45 25 43 -1.47 111 0 0 45 57 0 13 2 17.6 17 197 -24 45 50 12 46 3 50 45 45 45 46 8 20 -1.47 112 0 0 46 40 1 13 2 25.4 17 198 -24 46 33 8 46 46 56 46 28 37 46 51 30 -1.47 113 0 0 47 23 32 13 2 32.8 16 199 -24 47 16 34 47 30 32 47 11 59 47 35 10 -1.47 114 0 0 48 7 32 13 2 39.7 15 200 -24 48 0 28 48 14 37 47 55 50 48 19 18 -1.47 115 0 0 48 51 57 13 2 46.3 14 201 -25 48 44 48 48 59 9 48 40 7 49 3 53 -1.47 116 0 0 49 36 47 13 2 52.4 13 202 -25 49 29 32 49 44 4 49 24 47 49 48 53 -1.48 117 0 0 50 22 0 13 2 58.0 12 203 -25 50 14 39 50 29 22 50 9 50 50 34 15 -1.48 118 0 0 51 7 31 13 3 3.2 11 203 -25 51 0 5 51 15 0 50 55 12 51 19 57 -1.48 119 0 0 51 53 21 13 3 7.9 10 204 -25 51 45 48 52 0 56 51 40 52 52 5 57 -1.48 120 0 0 52 39 25 13 3 12.2 9 205 -25 52 31 47 52 47 7 52 26 46 52 52 12 -1.49 121 0 0 53 25 43 13 3 16.1 8 206 -25 53 17 57 53 33 30 53 12 53 53 38 39 -1.49 122 0 0 54 12 10 13 3 19.5 7 207 -25 54 4 18 54 20 4 53 59 9 54 25 17 -1.50 123 0 0 54 58 44 13 3 22.4 6 208 -24 54 50 46 55 6 44 54 45 33 55 12 2 -1.51 124 0 0 55 45 23 13 3 24.9 5 209 -24 55 37 18 55 53 30 55 32 1 55 58 52 -1.52 125 0 0 56 32 3 13 3 26.9 4 209 -24 56 23 52 56 40 17 56 18 31 56 45 44 -1.54 126 0 0 57 18 42 13 3 28.6 3 210 -24 57 10 24 57 27 3 57 4 59 57 32 34 -1.56 127 0 0 58 5 17 13 3 29.8 2 211 -24 57 56 52 58 13 44 57 51 22 58 19 20 -1.60 128 0 0 58 51 45 13 3 30.5 1 212 -23 58 43 14 59 0 19 58 37 39 59 5 59 -1.70 129 0 0 59 38 2 13 3 30.9 1 213 -23 59 29 24 59 46 43 59 23 46 59 52 28 -2.13 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 6877-00652-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 59 25.9882 DE: -24 48 56.910 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 59 25.9881 DE: -24 48 56.910 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.3 * B mag [mag]: 12.1 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3074) Popov asteroid class: approx. diameter [km]: 10 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.08320 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#45 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): 0.013", 0.001", 82.482° remarks: * orbital elements for (3074)Popov : Mean anomaly = 160.4149096374 deg Arg. of pericenter = 152.2361790928 deg Long. of node = 348.6282475194 deg Inclination = 2.4158023321 deg Eccentricity = 0.1111710064 Semimajor axis = 2.3387577824 AU Perihelion dist = 2.0787557261 AU Mag: H = 13.92, G = 0.15 Epoch of elements : MJD 60570.53870196 TDT (2024 Sep 17.5387) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#452023Apr24,1.32,2024,9,17,12.928867,-0.230127,0.796998,4.102720,1.184114,0.005249,0.000618,0.000000,0.000000 94.3535,-24.7828,-15.35,1.94,False TYC 6877-00652-1,18.99055229,-24.8158082,12.09,11.27,10.83,0.1,0,,19.01586352,-24.7827633,7.36,7.35,0,0,0 3074,Popov,18.63,10.003,2.0832,0,0,1.272,5.00,,1.0,0 0,160.2665,2024,9,17,152.2362,348.6282,2.4158,0.11117,2.33876,2.07876,13.92,5.0,0.15 1.329,0.0133,0.0009,82,0.0022,Known errors,0.82,0,-1,-1 20240917_0652-1,60140.57 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:39 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org