IOTA/IOTA-ES occultation update for (7896) Svejk / UCAC4 332-107838 event on 2024 Feb 07, 02:15 UT Visible from Summary ------- On 2024 Feb 07 UT, the 15.2455854397436 km diameter asteroid (7896) Svejk will occult a 11.4 mag star in the constellation Ophiuchus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.16 mag to 18.51 mag (the magnitude of the asteroid) for at most 0.440 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: 95 * date and approx. time of event: 2024 Feb 07, 02:13 - 2024 Feb 07, 02:18 * geocentric midpoint of event [JD]: 2460347.59439196 * magnitude of target star: 11.35 * magnitude drop [mag]: 7.16 * estimated maximum duration [s]: 0.440 * Moon: 11 % sunlit, 15° distance * Sun: 53° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 16 * 1 sigma uncertainty interval [path widths]: +/- 0.44 * 1 sigma uncertainty interval [seconds]: +/- 1.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.003", 95°) * approx speed of asteroid's shadow [km/s]: 35.4112 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 332-107838 by 7896 Svejk on 2024 Feb 7 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 15 0 0 21 10 49 2 13 6.2 1 116 -47 21 5 52 21 15 47 21 1 29 21 20 11 .... 16 0 0 20 43 43 2 13 6.3 2 116 -46 20 38 47 20 48 41 20 34 23 20 53 5 -0.17 17 0 0 20 16 34 2 13 6.5 3 117 -45 20 11 37 20 21 31 20 7 14 20 25 55 -0.24 18 0 0 19 49 22 2 13 6.7 4 117 -44 19 44 25 19 54 19 19 40 2 19 58 43 -0.27 19 0 0 19 22 8 2 13 6.9 5 117 -43 19 17 12 19 27 5 19 12 48 19 31 29 -0.29 20 0 0 18 54 53 2 13 7.3 6 118 -42 18 49 56 18 59 50 18 45 33 19 4 14 -0.30 21 0 0 18 27 37 2 13 7.7 7 118 -41 18 22 41 18 32 34 18 18 18 18 36 58 -0.31 22 0 0 18 0 22 2 13 8.1 8 118 -40 17 55 26 18 5 18 17 51 2 18 9 42 -0.32 23 0 0 17 33 8 2 13 8.7 9 119 -40 17 28 11 17 38 4 17 23 48 17 42 27 -0.32 24 0 0 17 5 55 2 13 9.3 10 119 -39 17 0 59 17 10 51 16 56 36 17 15 14 -0.33 25 0 0 16 38 44 2 13 9.9 11 119 -37 16 33 49 16 43 40 16 29 26 16 48 4 -0.33 26 0 0 16 11 37 2 13 10.7 12 120 -36 16 6 42 16 16 33 16 2 19 16 20 56 -0.33 27 0 0 15 44 34 2 13 11.4 13 120 -35 15 39 39 15 49 30 15 35 17 15 53 52 -0.33 28 0 0 15 17 36 2 13 12.3 14 120 -34 15 12 41 15 22 31 15 8 19 15 26 53 -0.34 29 0 0 14 50 43 2 13 13.2 16 120 -33 14 45 48 14 55 38 14 41 26 15 0 0 -0.34 30 0 0 14 23 56 2 13 14.2 17 121 -32 14 19 1 14 28 50 14 14 40 14 33 12 -0.34 31 0 0 13 57 16 2 13 15.3 18 121 -31 13 52 22 14 2 10 13 48 0 14 6 32 -0.34 32 0 0 13 30 43 2 13 16.4 19 121 -30 13 25 49 13 35 37 13 21 29 13 39 59 -0.34 33 0 0 13 4 19 2 13 17.6 20 122 -29 12 59 26 13 9 13 12 55 5 13 13 34 -0.34 34 0 0 12 38 4 2 13 18.8 21 122 -28 12 33 11 12 42 57 12 28 50 12 47 18 -0.34 35 0 0 12 11 58 2 13 20.1 22 122 -27 12 7 6 12 16 51 12 2 46 12 21 12 -0.34 36 0 0 11 46 3 2 13 21.5 23 122 -26 11 41 11 11 50 56 11 36 51 11 55 16 -0.35 37 0 0 11 20 19 2 13 22.9 24 123 -25 11 15 27 11 25 11 11 11 8 11 29 31 -0.35 38 0 0 10 54 47 2 13 24.4 25 123 -24 10 49 55 10 59 38 10 45 36 11 3 58 -0.35 39 0 0 10 29 27 2 13 26.0 26 123 -23 10 24 36 10 34 18 10 20 17 10 38 37 -0.35 40 0 0 10 4 20 2 13 27.6 27 123 -22 9 59 29 10 9 11 9 55 11 10 13 29 -0.35 41 0 0 9 39 27 2 13 29.3 28 124 -21 9 34 36 9 44 17 9 30 19 9 48 35 -0.35 42 0 0 9 14 48 2 13 31.0 29 124 -20 9 9 58 9 19 37 9 5 41 9 23 55 -0.35 43 0 0 8 50 23 2 13 32.8 30 124 -19 8 45 34 8 55 13 8 41 17 8 59 30 -0.35 44 0 0 8 26 15 2 13 34.6 31 125 -18 8 21 26 8 31 4 8 17 9 8 35 21 -0.35 45 0 0 8 2 22 2 13 36.5 32 125 -17 7 57 34 8 7 11 7 53 18 8 11 27 -0.35 46 0 0 7 38 46 2 13 38.5 34 125 -16 7 33 58 7 43 34 7 29 43 7 47 50 -0.35 47 0 0 7 15 27 2 13 40.5 35 126 -14 7 10 40 7 20 15 7 6 25 7 24 30 -0.35 48 0 0 6 52 26 2 13 42.5 36 126 -13 6 47 39 6 57 13 6 43 24 7 1 28 -0.35 49 0 0 6 29 43 2 13 44.6 37 126 -12 6 24 57 6 34 29 6 20 42 6 38 44 -0.35 50 0 0 6 7 18 2 13 46.8 38 126 -11 6 2 33 6 12 4 5 58 19 6 16 19 -0.35 51 0 0 5 45 13 2 13 49.0 39 127 -10 5 40 28 5 49 59 5 36 15 5 54 12 -0.35 52 0 0 5 23 28 2 13 51.3 40 127 -9 5 18 43 5 28 13 5 14 30 5 32 26 -0.35 53 0 0 5 2 2 2 13 53.6 41 128 -8 4 57 18 5 6 46 4 53 5 5 10 59 -0.35 54 0 0 4 40 57 2 13 55.9 42 128 -7 4 36 13 4 45 41 4 32 1 4 49 53 -0.36 55 0 0 4 20 13 2 13 58.3 43 128 -6 4 15 30 4 24 56 4 11 18 4 29 8 -0.36 56 0 0 3 59 50 2 14 0.7 44 129 -5 3 55 8 4 4 33 3 50 56 4 8 45 -0.36 57 0 0 3 39 49 2 14 3.2 45 129 -4 3 35 7 3 44 32 3 30 56 3 48 43 -0.36 58 0 0 3 20 10 2 14 5.7 46 130 -3 3 15 29 3 24 52 3 11 18 3 29 3 -0.36 59 0 0 3 0 54 2 14 8.3 47 130 -2 2 56 13 3 5 35 2 52 3 3 9 45 -0.36 60 0 0 2 42 0 2 14 10.9 48 131 -1 2 37 20 2 46 41 2 33 10 2 50 51 -0.36 61 0 0 2 23 30 2 14 13.5 49 131 0 2 18 50 2 28 10 2 14 41 2 32 19 -0.36 62 0 0 2 5 23 2 14 16.2 50 132 1 2 0 43 2 10 3 1 56 35 2 14 11 -0.36 63 0 0 1 47 40 2 14 18.9 51 132 2 1 43 0 1 52 19 1 38 52 1 56 27 -0.36 64 0 0 1 30 20 2 14 21.6 51 133 4 1 25 42 1 34 59 1 21 34 1 39 7 -0.36 65 0 0 1 13 26 2 14 24.4 52 134 5 1 8 47 1 18 4 1 4 40 1 22 11 -0.36 66 0 0 0 56 55 2 14 27.2 53 134 6 0 52 17 1 1 33 0 48 11 1 5 40 -0.36 67 0 0 0 40 50 2 14 30.0 54 135 7 0 36 12 0 45 27 0 32 6 0 49 34 -0.36 68 0 0 0 25 9 2 14 32.8 55 136 8 0 20 32 0 29 46 0 16 27 0 33 52 -0.36 69 0 0 0 9 54 2 14 35.7 56 137 9 0 5 18 0 14 31 0 1 12 0 18 36 -0.36 70 0 0 - 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0 39 22 -0.36 132 0 0 - 0 34 32 2 17 45.0 46 235 67 - 0 39 7 - 0 29 57 - 0 43 11 - 0 25 53 -0.36 133 0 0 - 0 20 38 2 17 47.4 45 236 68 - 0 25 13 - 0 16 3 - 0 29 18 - 0 11 58 -0.36 134 0 0 - 0 6 18 2 17 49.9 44 236 69 - 0 10 54 - 0 1 42 - 0 14 59 0 2 23 -0.36 135 0 0 0 8 27 2 17 52.2 43 236 69 0 3 51 0 13 4 - 0 0 14 0 17 9 -0.36 136 0 0 0 23 38 2 17 54.6 42 237 70 0 19 1 0 28 15 0 14 56 0 32 21 -0.36 137 0 0 0 39 14 2 17 56.9 41 237 70 0 34 37 0 43 51 0 30 31 0 47 58 -0.36 138 0 0 0 55 15 2 17 59.1 40 237 70 0 50 37 0 59 52 0 46 31 1 3 59 -0.36 139 0 0 1 11 40 2 18 1.4 39 238 71 1 7 2 1 16 18 1 2 55 1 20 26 -0.36 140 0 0 1 28 30 2 18 3.5 38 238 71 1 23 52 1 33 9 1 19 44 1 37 16 -0.36 141 0 0 1 45 44 2 18 5.7 37 238 71 1 41 5 1 50 23 1 36 57 1 54 31 -0.36 142 0 0 2 3 22 2 18 7.7 36 238 71 1 58 43 2 8 2 1 54 34 2 12 10 -0.36 143 0 0 2 21 24 2 18 9.8 35 239 71 2 16 44 2 26 4 2 12 35 2 30 13 -0.36 144 0 0 2 39 48 2 18 11.8 34 239 71 2 35 8 2 44 29 2 30 59 2 48 39 -0.36 145 0 0 2 58 36 2 18 13.7 33 239 71 2 53 55 3 3 17 2 49 46 3 7 27 -0.36 146 0 0 3 17 47 2 18 15.6 32 239 71 3 13 5 3 22 28 3 8 55 3 26 39 -0.36 147 0 0 3 37 20 2 18 17.4 31 240 71 3 32 38 3 42 2 3 28 27 3 46 13 -0.36 148 0 0 3 57 14 2 18 19.2 30 240 71 3 52 32 4 1 57 3 48 21 4 6 8 -0.36 149 0 0 4 17 31 2 18 20.9 29 240 70 4 12 48 4 22 14 4 8 36 4 26 26 -0.36 150 0 0 4 38 8 2 18 22.6 28 240 70 4 33 25 4 42 52 4 29 13 4 47 4 -0.36 151 0 0 4 59 7 2 18 24.2 27 240 69 4 54 23 5 3 51 4 50 10 5 8 4 -0.36 152 0 0 5 20 26 2 18 25.8 26 240 69 5 15 41 5 25 10 5 11 28 5 29 23 -0.36 153 0 0 5 42 4 2 18 27.3 24 241 68 5 37 19 5 46 49 5 33 6 5 51 3 -0.36 154 0 0 6 4 3 2 18 28.7 23 241 68 5 59 17 6 8 48 5 55 3 6 13 2 -0.36 155 0 0 6 26 20 2 18 30.1 22 241 67 6 21 34 6 31 6 6 17 20 6 35 21 -0.36 156 0 0 6 48 56 2 18 31.4 21 241 67 6 44 9 6 53 42 6 39 55 6 57 57 -0.36 157 0 0 7 11 50 2 18 32.7 20 241 66 7 7 3 7 16 37 7 2 48 7 20 52 -0.36 158 0 0 7 35 1 2 18 33.9 19 242 65 7 30 14 7 39 49 7 25 58 7 44 5 -0.36 159 0 0 7 58 30 2 18 35.0 18 242 65 7 53 42 8 3 18 7 49 26 8 7 34 -0.36 160 0 0 8 22 15 2 18 36.1 17 242 64 8 17 27 8 27 4 8 13 10 8 31 20 -0.36 161 0 0 8 46 16 2 18 37.1 16 242 63 8 41 27 8 51 5 8 37 11 8 55 22 -0.36 162 0 0 9 10 33 2 18 38.1 15 242 62 9 5 43 9 15 22 9 1 26 9 19 40 -0.36 163 0 0 9 35 4 2 18 39.0 14 242 61 9 30 14 9 39 54 9 25 57 9 44 12 -0.36 164 0 0 9 59 50 2 18 39.8 13 243 60 9 54 59 10 4 40 9 50 41 10 8 58 -0.36 165 0 0 10 24 49 2 18 40.6 12 243 60 10 19 58 10 29 40 10 15 40 10 33 58 -0.36 166 0 0 10 50 1 2 18 41.3 11 243 59 10 45 10 10 54 52 10 40 51 10 59 11 -0.36 167 0 0 11 15 25 2 18 41.9 10 243 58 11 10 34 11 20 17 11 6 15 11 24 37 -0.36 168 0 0 11 41 2 2 18 42.5 9 243 57 11 36 10 11 45 54 11 31 50 11 50 14 -0.36 169 0 0 12 6 49 2 18 43.0 7 244 56 12 1 57 12 11 42 11 57 37 12 16 2 -0.36 170 0 0 12 32 47 2 18 43.4 6 244 55 12 27 54 12 37 40 12 23 34 12 42 0 -0.37 171 0 0 12 58 54 2 18 43.8 5 244 54 12 54 1 13 3 48 12 49 41 13 8 8 -0.37 172 0 0 13 25 11 2 18 44.1 4 244 53 13 20 17 13 30 4 13 15 57 13 34 26 -0.37 173 0 0 13 51 36 2 18 44.3 3 245 52 13 46 42 13 56 30 13 42 21 14 0 51 -0.37 174 0 0 14 18 8 2 18 44.4 2 245 51 14 13 14 14 23 2 14 8 53 14 27 24 -0.38 175 0 0 14 44 48 2 18 44.5 1 245 50 14 39 53 14 49 42 14 35 32 14 54 4 -0.39 176 0 0 15 11 33 2 18 44.6 0 245 49 15 6 39 .. .. .. 15 2 17 .. .. .. -3.71 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 13.2 Data for the target star ------------------------ * name: UCAC4 332-107838 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 35 31.1434 DE: -23 46 20.381 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 35 31.1434 DE: -23 46 20.381 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.4 * B mag [mag]: 12.3 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (7896) Svejk asteroid class: approx. diameter [km]: 15 approx. diameter ["]: 0.006 distance from Earth [AU]: 3.34240 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#52 date of fit: 2023 Apr 25 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): 0.015", 0.003", 95.001° remarks: * orbital elements for (7896)Svejk : Mean anomaly = 44.1261113153 deg Arg. of pericenter = 139.4299037329 deg Long. of node = 52.3229550699 deg Inclination = 1.9066798140 deg Eccentricity = 0.1388296683 Semimajor axis = 3.1390837894 AU Perihelion dist = 2.7032858282 AU Mag: H = 12.74, G = 0.15 Epoch of elements : MJD 60347.09439188 TDT (2024 Feb 07.0944) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522023Apr25,0.44,2024,2,7,2.265407,0.021250,0.341644,19.950182,-1.213778,-0.004754,0.000165,-0.000001,0.000000 93.5475,-23.7883,149.53,-15.50,False UCAC4 332-107838,17.59198422,-23.7723279,12.27,11.35,10.85,0.1,0,,17.61614519,-23.7883499,7.16,7.21,0,0,0 7896,Svejk,18.51,15.488,3.3424,0,0,3.825,-3.19,,1.6,0 0,44.1094,2024,2,7,139.4299,52.3230,1.9067,0.13883,3.13908,2.70329,12.74,5.0,0.15 1.444,0.0150,0.0028,95,0.0028,Known errors,0.60,0,-1,-1 20240207_107838,60138.16 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 13, 03:46 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org