IOTA/IOTA-ES occultation update for (1788) Kiess / TYC 621-00609-1 event on 2024 Jun 17, 01:52 UT Visible from Summary ------- On 2024 Jun 17 UT, the 20.496 km diameter asteroid (1788) Kiess will occult a 11.7 mag star in the constellation Pisces for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.01 mag to 17.69 mag (the magnitude of the asteroid) for at most 0.660 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: 94 * date and approx. time of event: 2024 Jun 17, 01:49 - 2024 Jun 17, 01:55 * geocentric midpoint of event [JD]: 2460478.57811042 * magnitude of target star: 11.68 * magnitude drop [mag]: 6.01 * estimated maximum duration [s]: 0.660 * Moon: 75 % sunlit, 178° distance * Sun: 61° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 22 * 1 sigma uncertainty interval [path widths]: +/- 0.45 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.004", 70°) * approx speed of asteroid's shadow [km/s]: 31.1208 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 621-00609-1 by 1788 Kiess on 2024 Jun 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 9 0 0 -38 14 40 1 49 14.0 1 77 -56 -38 20 38 -38 8 42 -38 26 0 -38 3 21 .... 10 0 0 -38 3 58 1 49 14.0 1 77 -55 -38 9 57 -37 57 59 -38 15 19 -37 52 37 0.16 11 0 0 -37 52 56 1 49 14.1 2 76 -54 -37 58 55 -37 46 57 -38 4 18 -37 41 34 0.22 12 0 0 -37 41 33 1 49 14.3 3 75 -54 -37 47 33 -37 35 34 -37 52 56 -37 30 11 0.25 13 0 0 -37 29 51 1 49 14.4 4 75 -53 -37 35 51 -37 23 51 -37 41 15 -37 18 27 0.26 14 0 0 -37 17 48 1 49 14.7 5 74 -52 -37 23 49 -37 11 47 -37 29 13 -37 6 23 0.27 15 0 0 -37 5 25 1 49 14.9 5 74 -51 -37 11 26 -36 59 24 -37 16 51 -36 54 0 0.28 16 0 0 -36 52 42 1 49 15.3 6 73 -51 -36 58 44 -36 46 40 -37 4 9 -36 41 15 0.29 17 0 0 -36 39 39 1 49 15.6 7 72 -50 -36 45 41 -36 33 37 -36 51 7 -36 28 11 0.29 18 0 0 -36 26 16 1 49 16.0 8 72 -49 -36 32 19 -36 20 13 -36 37 45 -36 14 47 0.29 19 0 0 -36 12 32 1 49 16.5 9 71 -48 -36 18 36 -36 6 29 -36 24 3 -36 1 2 0.30 20 0 0 -35 58 29 1 49 17.0 10 71 -48 -36 4 33 -35 52 25 -36 10 1 -35 46 58 0.30 21 0 0 -35 44 5 1 49 17.5 10 70 -47 -35 50 10 -35 38 1 -35 55 38 -35 32 33 0.30 22 0 0 -35 29 22 1 49 18.1 11 69 -46 -35 35 27 -35 23 17 -35 40 56 -35 17 49 0.30 23 0 0 -35 14 19 1 49 18.8 12 69 -45 -35 20 25 -35 8 13 -35 25 54 -35 2 44 0.30 24 0 0 -34 58 55 1 49 19.5 13 68 -44 -35 5 2 -34 52 49 -35 10 31 -34 47 20 0.30 25 0 0 -34 43 12 1 49 20.2 14 68 -44 -34 49 19 -34 37 5 -34 54 50 -34 31 35 0.30 26 0 0 -34 27 9 1 49 21.1 15 67 -43 -34 33 17 -34 21 2 -34 38 48 -34 15 31 0.30 27 0 0 -34 10 47 1 49 21.9 16 67 -42 -34 16 55 -34 4 38 -34 22 26 -33 59 8 0.31 28 0 0 -33 54 5 1 49 22.8 16 66 -41 -34 0 14 -33 47 56 -34 5 45 -33 42 24 0.31 29 0 0 -33 37 3 1 49 23.8 17 65 -40 -33 43 13 -33 30 53 -33 48 45 -33 25 22 0.31 30 0 0 -33 19 42 1 49 24.8 18 65 -39 -33 25 52 -33 13 32 -33 31 25 -33 8 0 0.31 31 0 0 -33 2 2 1 49 25.9 19 64 -38 -33 8 13 -32 55 51 -33 13 46 -32 50 18 0.31 32 0 0 -32 44 3 1 49 27.0 20 64 -38 -32 50 14 -32 37 51 -32 55 48 -32 32 18 0.31 33 0 0 -32 25 44 1 49 28.2 21 63 -37 -32 31 56 -32 19 32 -32 37 31 -32 13 59 0.31 34 0 0 -32 7 7 1 49 29.4 22 62 -36 -32 13 20 -32 0 55 -32 18 55 -31 55 20 0.31 35 0 0 -31 48 12 1 49 30.7 23 62 -35 -31 54 25 -31 41 59 -32 0 1 -31 36 24 0.31 36 0 0 -31 28 58 1 49 32.1 24 61 -34 -31 35 12 -31 22 44 -31 40 48 -31 17 9 0.31 37 0 0 -31 9 26 1 49 33.5 25 61 -33 -31 15 40 -31 3 11 -31 21 17 -30 57 35 0.31 38 0 0 -30 49 36 1 49 34.9 25 60 -32 -30 55 51 -30 43 21 -31 1 28 -30 37 44 0.31 39 0 0 -30 29 28 1 49 36.5 26 60 -31 -30 35 43 -30 23 12 -30 41 21 -30 17 35 0.31 40 0 0 -30 9 2 1 49 38.0 27 59 -30 -30 15 18 -30 2 46 -30 20 56 -29 57 9 0.31 41 0 0 -29 48 20 1 49 39.7 28 58 -30 -29 54 36 -29 42 3 -30 0 15 -29 36 25 0.31 42 0 0 -29 27 20 1 49 41.4 29 58 -29 -29 33 37 -29 21 3 -29 39 16 -29 15 24 0.31 43 0 0 -29 6 4 1 49 43.1 30 57 -28 -29 12 21 -28 59 46 -29 18 1 -28 54 7 0.31 44 0 0 -28 44 31 1 49 45.0 31 57 -27 -28 50 49 -28 38 13 -28 56 29 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14.0 43 48 -14 -23 48 52 -23 36 6 -23 54 37 -23 30 22 0.32 58 0 0 -23 17 49 1 50 16.6 44 48 -13 -23 24 13 -23 11 26 -23 29 58 -23 5 42 0.32 59 0 0 -22 53 0 1 50 19.3 45 47 -12 -22 59 24 -22 46 36 -23 5 9 -22 40 52 0.32 60 0 0 -22 28 1 1 50 22.1 46 46 -11 -22 34 25 -22 21 37 -22 40 10 -22 15 53 0.32 61 0 0 -22 2 54 1 50 24.9 47 45 -10 -22 9 18 -21 56 30 -22 15 3 -21 50 45 0.32 62 0 0 -21 37 39 1 50 27.8 48 45 -9 -21 44 3 -21 31 14 -21 49 48 -21 25 30 0.32 63 0 0 -21 12 16 1 50 30.7 49 44 -8 -21 18 40 -21 5 52 -21 24 26 -21 0 7 0.32 64 0 0 -20 46 47 1 50 33.6 50 43 -7 -20 53 11 -20 40 22 -20 58 57 -20 34 37 0.32 65 0 0 -20 21 11 1 50 36.7 51 42 -6 -20 27 36 -20 14 47 -20 33 22 -20 9 2 0.32 66 0 0 -19 55 30 1 50 39.7 52 41 -5 -20 1 55 -19 49 6 -20 7 41 -19 43 21 0.32 67 0 0 -19 29 44 1 50 42.8 53 40 -4 -19 36 9 -19 23 20 -19 41 55 -19 17 35 0.32 68 0 0 -19 3 55 1 50 46.0 54 39 -3 -19 10 19 -18 57 30 -19 16 5 -18 51 45 0.32 69 0 0 -18 38 1 1 50 49.2 55 38 -2 -18 44 26 -18 31 37 -18 50 12 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0 0 0 24 44 1 53 55.9 58 288 52 0 18 43 0 30 46 0 13 18 0 36 11 0.33 121 0 0 0 39 34 1 53 59.2 57 287 52 0 33 33 0 45 35 0 28 8 0 50 59 0.33 122 0 0 0 54 0 1 54 2.5 56 286 53 0 47 59 1 0 0 0 42 35 1 5 24 0.33 123 0 0 1 8 1 1 54 5.8 56 286 54 1 2 1 1 14 1 0 56 38 1 19 24 0.33 124 0 0 1 21 39 1 54 9.0 55 285 55 1 15 39 1 27 38 1 10 16 1 33 1 0.33 125 0 0 1 34 52 1 54 12.1 54 284 56 1 28 53 1 40 51 1 23 30 1 46 13 0.33 126 0 0 1 47 40 1 54 15.2 53 284 57 1 41 41 1 53 38 1 36 19 1 59 0 0.33 127 0 0 2 0 3 1 54 18.3 52 283 58 1 54 5 2 6 1 1 48 43 2 11 23 0.33 128 0 0 2 12 2 1 54 21.4 51 283 59 2 6 5 2 18 0 2 0 43 2 23 21 0.33 129 0 0 2 23 36 1 54 24.3 50 282 60 2 17 39 2 29 33 2 12 18 2 34 53 0.33 130 0 0 2 34 45 1 54 27.3 49 282 60 2 28 48 2 40 41 2 23 27 2 46 1 0.33 131 0 0 2 45 28 1 54 30.2 48 281 61 2 39 32 2 51 24 2 34 11 2 56 44 0.33 132 0 0 2 55 46 1 54 33.0 47 281 62 2 49 50 3 1 42 2 44 30 3 7 1 0.33 133 0 0 3 5 39 1 54 35.8 46 281 63 2 59 43 3 11 34 2 54 24 3 16 53 0.33 134 0 0 3 15 6 1 54 38.6 45 280 64 3 9 11 3 21 1 3 3 51 3 26 19 0.33 135 0 0 3 24 7 1 54 41.3 44 280 64 3 18 13 3 30 2 3 12 54 3 35 20 0.33 136 0 0 3 32 43 1 54 43.9 43 280 65 3 26 49 3 38 37 3 21 30 3 43 55 0.33 137 0 0 3 40 53 1 54 46.5 42 280 66 3 34 59 3 46 47 3 29 41 3 52 5 0.33 138 0 0 3 48 38 1 54 49.1 41 280 66 3 42 44 3 54 31 3 37 26 3 59 49 0.33 139 0 0 3 55 56 1 54 51.5 40 279 67 3 50 3 4 1 50 3 44 45 4 7 7 0.33 140 0 0 4 2 49 1 54 54.0 39 279 68 3 56 56 4 8 42 3 51 39 4 13 59 0.33 141 0 0 4 9 16 1 54 56.4 38 279 68 4 3 23 4 15 8 3 58 6 4 20 25 0.33 142 0 0 4 15 17 1 54 58.7 37 279 69 4 9 24 4 21 9 4 4 7 4 26 25 0.33 143 0 0 4 20 51 1 55 1.0 36 279 69 4 14 59 4 26 43 4 9 42 4 32 0 0.33 144 0 0 4 26 0 1 55 3.2 35 279 70 4 20 8 4 31 52 4 14 52 4 37 8 0.33 145 0 0 4 30 43 1 55 5.4 34 279 70 4 24 51 4 36 35 4 19 35 4 41 50 0.33 146 0 0 4 34 59 1 55 7.5 33 279 70 4 29 8 4 40 51 4 23 52 4 46 7 0.33 147 0 0 4 38 50 1 55 9.6 32 278 71 4 32 58 4 44 41 4 27 43 4 49 57 0.33 148 0 0 4 42 14 1 55 11.6 31 278 71 4 36 23 4 48 6 4 31 7 4 53 21 0.33 149 0 0 4 45 13 1 55 13.5 30 278 71 4 39 22 4 51 4 4 34 6 4 56 19 0.33 150 0 0 4 47 45 1 55 15.4 30 278 71 4 41 54 4 53 36 4 36 38 4 58 51 0.33 151 0 0 4 49 51 1 55 17.2 29 278 71 4 44 0 4 55 42 4 38 45 5 0 57 0.33 152 0 0 4 51 31 1 55 19.0 28 278 71 4 45 40 4 57 22 4 40 25 5 2 37 0.33 153 0 0 4 52 45 1 55 20.7 27 278 71 4 46 54 4 58 36 4 41 39 5 3 51 0.33 154 0 0 4 53 33 1 55 22.4 26 278 71 4 47 42 4 59 23 4 42 27 5 4 38 0.33 155 0 0 4 53 55 1 55 24.0 25 278 71 4 48 4 4 59 45 4 42 48 5 5 0 0.33 156 0 0 4 53 50 1 55 25.5 24 278 71 4 47 59 4 59 41 4 42 44 5 4 56 0.33 157 0 0 4 53 20 1 55 27.0 23 278 71 4 47 29 4 59 10 4 42 14 5 4 25 0.33 158 0 0 4 52 23 1 55 28.4 22 278 70 4 46 33 4 58 14 4 41 17 5 3 29 0.33 159 0 0 4 51 1 1 55 29.8 21 279 70 4 45 10 4 56 52 4 39 55 5 2 7 0.33 160 0 0 4 49 13 1 55 31.1 20 279 70 4 43 22 4 55 3 4 38 6 5 0 18 0.33 161 0 0 4 46 58 1 55 32.3 19 279 69 4 41 7 4 52 49 4 35 52 4 58 4 0.33 162 0 0 4 44 18 1 55 33.5 18 279 69 4 38 27 4 50 9 4 33 11 4 55 24 0.33 163 0 0 4 41 12 1 55 34.6 17 279 68 4 35 21 4 47 3 4 30 5 4 52 18 0.33 164 0 0 4 37 40 1 55 35.6 16 279 68 4 31 49 4 43 31 4 26 33 4 48 47 0.33 165 0 0 4 33 43 1 55 36.6 15 279 67 4 27 51 4 39 34 4 22 35 4 44 49 0.33 166 0 0 4 29 19 1 55 37.5 14 279 66 4 23 28 4 35 11 4 18 11 4 40 26 0.33 167 0 0 4 24 30 1 55 38.4 13 279 66 4 18 38 4 30 22 4 13 22 4 35 38 0.33 168 0 0 4 19 16 1 55 39.2 12 279 65 4 13 24 4 25 8 4 8 7 4 30 24 0.33 169 0 0 4 13 36 1 55 39.9 11 279 64 4 7 43 4 19 28 4 2 27 4 24 44 0.33 170 0 0 4 7 30 1 55 40.6 10 279 64 4 1 37 4 13 22 3 56 21 4 18 39 0.34 171 0 0 4 0 59 1 55 41.2 9 279 63 3 55 6 4 6 52 3 49 49 4 12 8 0.34 172 0 0 3 54 3 1 55 41.7 8 279 62 3 48 10 3 59 56 3 42 52 4 5 13 0.34 173 0 0 3 46 41 1 55 42.2 7 279 61 3 40 48 3 52 34 3 35 30 3 57 52 0.34 174 0 0 3 38 55 1 55 42.6 6 279 60 3 33 1 3 44 48 3 27 43 3 50 5 0.34 175 0 0 3 30 43 1 55 42.9 5 279 60 3 24 49 3 36 37 3 19 31 3 41 54 0.35 176 0 0 3 22 6 1 55 43.2 4 279 59 3 16 12 3 28 0 3 10 53 3 33 18 0.35 177 0 0 3 13 4 1 55 43.4 3 280 58 3 7 10 3 18 59 3 1 51 3 24 17 0.36 178 0 0 3 3 38 1 55 43.5 2 280 57 2 57 43 3 9 33 2 52 24 3 14 52 0.39 179 0 0 2 53 47 1 55 43.6 1 280 56 2 47 52 2 59 42 2 42 32 3 5 1 0.52 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.4 Data for the target star ------------------------ * name: TYC 621-00609-1 * constellation : Pisces * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 01 33 51.7049 DE: +09 31 05.215 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 01 33 51.7050 DE: +09 31 05.215 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.7 * B mag [mag]: 12.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1788) Kiess asteroid class: approx. diameter [km]: 20 approx. diameter ["]: 0.009 distance from Earth [AU]: 3.18320 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#60 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): 0.017", 0.004", 69.9° remarks: * orbital elements for (1788)Kiess : Mean anomaly = 46.2487395462 deg Arg. of pericenter = 144.3391590536 deg Long. of node = 161.9084668249 deg Inclination = 0.6824254231 deg Eccentricity = 0.1533818004 Semimajor axis = 3.1163667996 AU Perihelion dist = 2.6383728493 AU Mag: H = 11.97, G = 0.15 Epoch of elements : MJD 60478.07811034 TDT (2024 Jun 17.0781) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#602023Apr24,0.66,2024,6,17,1.874650,0.110143,-0.288414,16.419055,6.241773,-0.004523,-0.001780,-0.000001,0.000000 89.8469,9.6424,152.13,23.39,False TYC 621-00609-1,1.56436244,9.5181150,12.32,11.68,11.33,0.0,0,,1.58560277,9.6424332,6.01,5.91,0,0,0 1788,Kiess,17.69,20.496,3.1832,0,0,3.068,17.24,,1.4,0 0,46.0556,2024,6,16,144.3392,161.9085,0.6824,0.15338,3.11637,2.63837,11.97,5.0,0.15 1.449,0.0173,0.0040,70,0.0040,Known errors,1.55,0,-1,-1 20240617_0609-1,60139.39 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 09:18 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org