IOTA/IOTA-ES occultation update for (1047) Geisha / UCAC4 317-201343 event on 2024 Oct 31, 08:50 UT Visible from Summary ------- On 2024 Oct 31 UT, the 10.4187127612022 km diameter asteroid (1047) Geisha will occult a 11.5 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 5.09 mag to 16.58 mag (the magnitude of the asteroid) for at most 0.320 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 Oct 31, 08:47 - 2024 Oct 31, 08:53 * geocentric midpoint of event [JD]: 2460614.86854255 * magnitude of target star: 11.50 * magnitude drop [mag]: 5.09 * estimated maximum duration [s]: 0.320 * Moon: 1 % sunlit, 72° distance * Sun: 60° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.18 * 1 sigma uncertainty interval [seconds]: +/- 0.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.009, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.009", 0.001", 92°) * approx speed of asteroid's shadow [km/s]: 32.9499 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 317-201343 by 1047 Geisha on 2024 Oct 31 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 - 6 42 55 8 47 29.1 1 117 60 - 6 46 9 - 6 39 42 - 6 47 21 - 6 38 30 .... 16 0 0 - 7 13 12 8 47 29.2 2 117 62 - 7 16 25 - 7 9 58 - 7 17 37 - 7 8 46 0.14 17 0 0 - 7 43 23 8 47 29.3 3 116 63 - 7 46 36 - 7 40 9 - 7 47 48 - 7 38 57 0.12 18 0 0 - 8 13 27 8 47 29.5 4 116 64 - 8 16 41 - 8 10 14 - 8 17 53 - 8 9 2 0.10 19 0 0 - 8 43 25 8 47 29.8 5 116 65 - 8 46 39 - 8 40 12 - 8 47 51 - 8 39 0 0.10 20 0 0 - 9 13 16 8 47 30.2 6 116 66 - 9 16 29 - 9 10 3 - 9 17 41 - 9 8 51 0.09 21 0 0 - 9 42 58 8 47 30.7 7 116 67 - 9 46 11 - 9 39 45 - 9 47 23 - 9 38 33 0.09 22 0 0 -10 12 31 8 47 31.2 8 116 68 -10 15 44 -10 9 18 -10 16 56 -10 8 6 0.09 23 0 0 -10 41 54 8 47 31.8 10 116 69 -10 45 6 -10 38 41 -10 46 18 -10 37 29 0.09 24 0 0 -11 11 6 8 47 32.4 11 115 70 -11 14 18 -11 7 53 -11 15 30 -11 6 42 0.09 25 0 0 -11 40 7 8 47 33.1 12 115 71 -11 43 19 -11 36 54 -11 44 31 -11 35 43 0.09 26 0 0 -12 8 55 8 47 33.9 13 115 72 -12 12 7 -12 5 43 -12 13 19 -12 4 31 0.08 27 0 0 -12 37 31 8 47 34.8 14 115 73 -12 40 43 -12 34 19 -12 41 54 -12 33 7 0.08 28 0 0 -13 5 53 8 47 35.7 15 114 74 -13 9 5 -13 2 41 -13 10 16 -13 1 30 0.08 29 0 0 -13 34 1 8 47 36.7 16 114 75 -13 37 12 -13 30 49 -13 38 24 -13 29 38 0.08 30 0 0 -14 1 54 8 47 37.7 17 114 76 -14 5 5 -13 58 43 -14 6 16 -13 57 31 0.08 31 0 0 -14 29 31 8 47 38.8 18 114 77 -14 32 42 -14 26 20 -14 33 53 -14 25 9 0.08 32 0 0 -14 56 53 8 47 40.0 19 113 78 -15 0 3 -14 53 42 -15 1 14 -14 52 31 0.08 33 0 0 -15 23 57 8 47 41.2 20 113 79 -15 27 8 -15 20 47 -15 28 19 -15 19 36 0.08 34 0 0 -15 50 45 8 47 42.5 21 113 80 -15 53 55 -15 47 35 -15 55 6 -15 46 24 0.08 35 0 0 -16 17 14 8 47 43.9 22 113 81 -16 20 24 -16 14 5 -16 21 35 -16 12 54 0.08 36 0 0 -16 43 26 8 47 45.3 24 112 82 -16 46 35 -16 40 16 -16 47 46 -16 39 6 0.08 37 0 0 -17 9 18 8 47 46.7 25 112 83 -17 12 27 -17 6 9 -17 13 37 -17 4 58 0.08 38 0 0 -17 34 51 8 47 48.3 26 112 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83 52 35 -31 2 1 -30 56 16 -31 3 5 -30 55 12 0.07 102 0 0 -30 58 29 8 50 27.4 84 47 34 -31 1 22 -30 55 37 -31 2 26 -30 54 33 0.08 103 0 0 -30 57 25 8 50 30.3 84 40 33 -31 0 18 -30 54 33 -31 1 22 -30 53 29 0.08 104 0 0 -30 55 56 8 50 33.2 85 32 32 -30 58 49 -30 53 4 -30 59 53 -30 52 0 0.08 105 0 0 -30 54 2 8 50 36.2 85 22 31 -30 56 55 -30 51 10 -30 57 59 -30 50 5 0.08 106 0 0 -30 51 43 8 50 39.1 85 10 30 -30 54 35 -30 48 50 -30 55 40 -30 47 46 0.08 107 0 0 -30 48 58 8 50 42.0 85 357 30 -30 51 51 -30 46 6 -30 52 55 -30 45 1 0.08 108 0 0 -30 45 49 8 50 45.0 85 344 29 -30 48 42 -30 42 56 -30 49 46 -30 41 52 0.08 109 0 0 -30 42 14 8 50 47.9 85 333 28 -30 45 7 -30 39 21 -30 46 11 -30 38 17 0.08 110 0 0 -30 38 14 8 50 50.9 85 322 27 -30 41 7 -30 35 21 -30 42 11 -30 34 17 0.08 111 0 0 -30 33 49 8 50 53.8 84 314 26 -30 36 42 -30 30 56 -30 37 46 -30 29 51 0.08 112 0 0 -30 28 59 8 50 56.8 84 307 25 -30 31 52 -30 26 5 -30 32 56 -30 25 1 0.08 113 0 0 -30 23 43 8 50 59.8 83 301 24 -30 26 36 -30 20 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6 23 0.08 151 0 0 -21 49 19 8 52 48.2 49 254 -11 -21 52 24 -21 46 14 -21 53 33 -21 45 5 0.08 152 0 0 -21 27 38 8 52 50.7 48 253 -12 -21 30 43 -21 24 33 -21 31 52 -21 23 24 0.08 153 0 0 -21 5 34 8 52 53.2 47 253 -13 -21 8 39 -21 2 28 -21 9 49 -21 1 19 0.08 154 0 0 -20 43 6 8 52 55.7 46 253 -14 -20 46 12 -20 40 0 -20 47 22 -20 38 51 0.08 155 0 0 -20 20 16 8 52 58.2 45 252 -15 -20 23 22 -20 17 10 -20 24 32 -20 16 0 0.08 156 0 0 -19 57 3 8 53 0.6 44 252 -16 -20 0 10 -19 53 56 -20 1 20 -19 52 47 0.08 157 0 0 -19 33 28 8 53 3.0 43 251 -17 -19 36 35 -19 30 21 -19 37 45 -19 29 11 0.08 158 0 0 -19 9 31 8 53 5.4 42 251 -18 -19 12 38 -19 6 23 -19 13 48 -19 5 14 0.08 159 0 0 -18 45 12 8 53 7.7 41 250 -19 -18 48 20 -18 42 4 -18 49 30 -18 40 54 0.08 160 0 0 -18 20 33 8 53 10.0 40 250 -20 -18 23 41 -18 17 24 -18 24 51 -18 16 14 0.08 161 0 0 -17 55 32 8 53 12.3 39 250 -21 -17 58 41 -17 52 23 -17 59 51 -17 51 13 0.08 162 0 0 -17 30 11 8 53 14.5 38 249 -22 -17 33 20 -17 27 2 -17 34 30 -17 25 52 0.08 163 0 0 -17 4 30 8 53 16.6 37 249 -23 -17 7 39 -17 1 21 -17 8 50 -17 0 10 0.08 164 0 0 -16 38 30 8 53 18.8 36 249 -24 -16 41 40 -16 35 20 -16 42 50 -16 34 10 0.08 165 0 0 -16 12 11 8 53 20.8 35 248 -26 -16 15 21 -16 9 1 -16 16 31 -16 7 50 0.08 166 0 0 -15 45 33 8 53 22.8 34 248 -27 -15 48 43 -15 42 23 -15 49 54 -15 41 12 0.08 167 0 0 -15 18 38 8 53 24.8 32 248 -28 -15 21 48 -15 15 27 -15 22 59 -15 14 16 0.08 168 0 0 -14 51 25 8 53 26.7 31 248 -29 -14 54 36 -14 48 14 -14 55 47 -14 47 3 0.08 169 0 0 -14 23 55 8 53 28.6 30 247 -30 -14 27 6 -14 20 44 -14 28 18 -14 19 33 0.08 170 0 0 -13 56 10 8 53 30.4 29 247 -31 -13 59 21 -13 52 58 -14 0 32 -13 51 47 0.08 171 0 0 -13 28 8 8 53 32.2 28 247 -32 -13 31 20 -13 24 57 -13 32 31 -13 23 45 0.08 172 0 0 -12 59 52 8 53 33.9 27 246 -33 -13 3 4 -12 56 40 -13 4 16 -12 55 29 0.08 173 0 0 -12 31 22 8 53 35.6 26 246 -34 -12 34 34 -12 28 10 -12 35 46 -12 26 58 0.08 174 0 0 -12 2 38 8 53 37.2 25 246 -35 -12 5 50 -11 59 26 -12 7 2 -11 58 14 0.08 175 0 0 -11 33 41 8 53 38.7 24 246 -36 -11 36 54 -11 30 29 -11 38 5 -11 29 17 0.08 176 0 0 -11 4 32 8 53 40.2 23 246 -37 -11 7 45 -11 1 20 -11 8 57 -11 0 8 0.08 177 0 0 -10 35 12 8 53 41.6 22 245 -39 -10 38 25 -10 31 59 -10 39 37 -10 30 47 0.08 178 0 0 -10 5 41 8 53 42.9 21 245 -40 -10 8 54 -10 2 28 -10 10 6 -10 1 16 0.08 179 0 0 - 9 36 0 8 53 44.2 19 245 -41 - 9 39 13 - 9 32 47 - 9 40 25 - 9 31 35 0.09 180 0 0 - 9 6 10 8 53 45.4 18 245 -42 - 9 9 24 - 9 2 57 - 9 10 36 - 9 1 45 0.09 -179 0 0 - 8 36 12 8 53 46.6 17 245 -43 - 8 39 26 - 8 32 59 - 8 40 38 - 8 31 47 0.09 -178 0 0 - 8 6 6 8 53 47.6 16 244 -44 - 8 9 20 - 8 2 53 - 8 10 32 - 8 1 41 0.09 -177 0 0 - 7 35 54 8 53 48.7 15 244 -45 - 7 39 7 - 7 32 40 - 7 40 20 - 7 31 28 0.09 -176 0 0 - 7 5 35 8 53 49.6 14 244 -46 - 7 8 49 - 7 2 22 - 7 10 1 - 7 1 9 0.09 -175 0 0 - 6 35 12 8 53 50.5 13 244 -47 - 6 38 26 - 6 31 58 - 6 39 38 - 6 30 46 0.09 -174 0 0 - 6 4 44 8 53 51.3 12 244 -49 - 6 7 58 - 6 1 31 - 6 9 11 - 6 0 18 0.09 -173 0 0 - 5 34 13 8 53 52.0 11 244 -50 - 5 37 27 - 5 31 0 - 5 38 40 - 5 29 47 0.10 -172 0 0 - 5 3 40 8 53 52.6 9 244 -51 - 5 6 54 - 5 0 26 - 5 8 6 - 4 59 14 0.10 -171 0 0 - 4 33 5 8 53 53.2 8 244 -52 - 4 36 19 - 4 29 51 - 4 37 31 - 4 28 39 0.10 -170 0 0 - 4 2 29 8 53 53.7 7 244 -53 - 4 5 43 - 3 59 15 - 4 6 55 - 3 58 3 0.10 -169 0 0 - 3 31 53 8 53 54.2 6 244 -54 - 3 35 7 - 3 28 39 - 3 36 19 - 3 27 27 0.11 -168 0 0 - 3 1 18 8 53 54.5 5 244 -55 - 3 4 32 - 2 58 4 - 3 5 44 - 2 56 52 0.12 -167 0 0 - 2 30 45 8 53 54.8 4 243 -56 - 2 33 59 - 2 27 31 - 2 35 11 - 2 26 19 0.13 -166 0 0 - 2 0 14 8 53 55.0 3 243 -57 - 2 3 28 - 1 57 1 - 2 4 40 - 1 55 49 0.15 -165 0 0 - 1 29 47 8 53 55.2 2 243 -59 - 1 33 1 - 1 26 34 - 1 34 13 - 1 25 22 0.20 -164 0 0 - 0 59 25 8 53 55.2 0 243 -60 - 1 2 38 - 0 56 11 - 1 3 50 - 0 54 59 0.55 Uncertainty in time = +/- 0 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 317-201343 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 36 55.0176 DE: -26 39 44.703 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 36 55.0175 DE: -26 39 44.703 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.5 * B mag [mag]: 12.2 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1047) Geisha asteroid class: approx. diameter [km]: 10 approx. diameter ["]: 0.006 distance from Earth [AU]: 2.36170 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#50 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): 0.009", 0.001", 92.078° remarks: * orbital elements for (1047)Geisha : Mean anomaly = 305.1242068509 deg Arg. of pericenter = 300.3415490954 deg Long. of node = 78.1830707485 deg Inclination = 5.6653618947 deg Eccentricity = 0.1923034456 Semimajor axis = 2.2411077137 AU Perihelion dist = 1.8101349783 AU Mag: H = 12.00, G = 0.15 Epoch of elements : MJD 60614.36854229 TDT (2024 Oct 31.3685) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Apr24,0.32,2024,10,31,8.845021,0.003393,-0.069763,18.570356,1.010933,0.004738,0.000151,-0.000001,0.000000 106.7846,-26.6429,43.23,-14.31,False UCAC4 317-201343,18.61528271,-26.6624175,12.23,11.50,11.11,0.1,0,,18.64079225,-26.6428749,5.09,5.03,0,0,0 1047,Geisha,16.58,10.590,2.3617,0,0,5.158,3.77,,1.0,0 0,305.0159,2024,10,31,300.3415,78.1831,5.6654,0.19230,2.24111,1.81013,12.00,5.0,0.15 1.186,0.0090,0.0008,92,0.0011,Known errors,0.77,0,-1,-1 20241031_201343,60140.67 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:05 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org