IOTA/IOTA-ES occultation update for (1047) Geisha / UCAC4 316-159061 event on 2024 Oct 19, 18:01 UT Visible from Summary ------- On 2024 Oct 19 UT, the 10.4805375607834 km diameter asteroid (1047) Geisha will occult a 9.9 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 6.66 mag to 16.56 mag (the magnitude of the asteroid) for at most 0.360 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 19, 17:57 - 2024 Oct 19, 18:04 * geocentric midpoint of event [JD]: 2460603.25069888 * magnitude of target star: 9.90 * magnitude drop [mag]: 6.66 * estimated maximum duration [s]: 0.360 * Moon: 92 % sunlit, 146° distance * Sun: 67° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.20 * 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", 95°) * approx speed of asteroid's shadow [km/s]: 29.4177 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 316-159061 by 1047 Geisha on 2024 Oct 19 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 -109 0 0 8 48 49 17 57 27.5 1 117 65 8 45 31 8 52 7 8 44 13 8 53 25 .... -108 0 0 8 18 13 17 57 27.5 2 117 66 8 14 55 8 21 31 8 13 37 8 22 48 -0.04 -107 0 0 7 47 39 17 57 27.7 3 118 67 7 44 21 7 50 57 7 43 4 7 52 15 -0.09 -106 0 0 7 17 9 17 57 28.0 4 118 68 7 13 51 7 20 27 7 12 34 7 21 44 -0.12 -105 0 0 6 46 43 17 57 28.3 5 118 69 6 43 25 6 50 0 6 42 8 6 51 18 -0.13 -104 0 0 6 16 22 17 57 28.7 6 118 70 6 13 5 6 19 39 6 11 47 6 20 57 -0.14 -103 0 0 5 46 7 17 57 29.3 7 118 71 5 42 50 5 49 24 5 41 32 5 50 42 -0.15 -102 0 0 5 15 58 17 57 29.8 8 118 72 5 12 41 5 19 15 5 11 24 5 20 33 -0.15 -101 0 0 4 45 57 17 57 30.5 10 118 73 4 42 41 4 49 14 4 41 23 4 50 32 -0.16 -100 0 0 4 16 5 17 57 31.3 11 118 74 4 12 48 4 19 21 4 11 31 4 20 39 -0.16 - 99 0 0 3 46 21 17 57 32.1 12 118 75 3 43 5 3 49 38 3 41 48 3 50 55 -0.16 - 98 0 0 3 16 48 17 57 33.0 13 118 76 3 13 32 3 20 4 3 12 15 3 21 21 -0.16 - 97 0 0 2 47 26 17 57 34.0 14 119 76 2 44 10 2 50 41 2 42 53 2 51 59 -0.17 - 96 0 0 2 18 15 17 57 35.1 15 119 77 2 14 59 2 21 30 2 13 42 2 22 47 -0.17 - 95 0 0 1 49 16 17 57 36.3 16 119 78 1 46 1 1 52 31 1 44 44 1 53 48 -0.17 - 94 0 0 1 20 30 17 57 37.5 17 119 78 1 17 15 1 23 45 1 15 59 1 25 2 -0.17 - 93 0 0 0 51 59 17 57 38.8 18 119 79 0 48 44 0 55 13 0 47 27 0 56 30 -0.17 - 92 0 0 0 23 41 17 57 40.2 20 119 79 0 20 27 0 26 56 0 19 10 0 28 12 -0.17 - 91 0 0 - 0 4 21 17 57 41.7 21 119 79 - 0 7 35 - 0 1 6 - 0 8 51 0 0 10 -0.17 - 90 0 0 - 0 32 7 17 57 43.3 22 119 80 - 0 35 20 - 0 28 53 - 0 36 37 - 0 27 37 -0.17 - 89 0 0 - 0 59 36 17 57 44.9 23 119 80 - 1 2 49 - 0 56 23 - 1 4 6 - 0 55 6 -0.17 - 88 0 0 - 1 26 48 17 57 46.6 24 119 80 - 1 30 1 - 1 23 35 - 1 31 17 - 1 22 19 -0.18 - 87 0 0 - 1 53 42 17 57 48.3 25 119 80 - 1 56 55 - 1 50 30 - 1 58 11 - 1 49 14 -0.18 - 86 0 0 - 2 20 18 17 57 50.2 26 119 79 - 2 23 31 - 2 17 6 - 2 24 46 - 2 15 50 -0.18 - 85 0 0 - 2 46 35 17 57 52.1 27 119 79 - 2 49 47 - 2 43 23 - 2 51 3 - 2 42 7 -0.18 - 84 0 0 - 3 12 32 17 57 54.0 28 119 78 - 3 15 44 - 3 9 21 - 3 16 59 - 3 8 5 -0.18 - 83 0 0 - 3 38 9 17 57 56.1 29 119 78 - 3 41 21 - 3 34 58 - 3 42 36 - 3 33 43 -0.18 - 82 0 0 - 4 3 26 17 57 58.2 31 119 77 - 4 6 36 - 4 0 15 - 4 7 52 - 3 58 59 -0.18 - 81 0 0 - 4 28 21 17 58 0.3 32 119 76 - 4 31 31 - 4 25 10 - 4 32 46 - 4 23 55 -0.18 - 80 0 0 - 4 52 54 17 58 2.6 33 119 76 - 4 56 4 - 4 49 44 - 4 57 19 - 4 48 29 -0.18 - 79 0 0 - 5 17 5 17 58 4.9 34 119 75 - 5 20 15 - 5 13 56 - 5 21 30 - 5 12 41 -0.18 - 78 0 0 - 5 40 54 17 58 7.2 35 119 74 - 5 44 3 - 5 37 45 - 5 45 18 - 5 36 30 -0.18 - 77 0 0 - 6 4 20 17 58 9.6 36 119 73 - 6 7 29 - 6 1 11 - 6 8 43 - 5 59 56 -0.18 - 76 0 0 - 6 27 22 17 58 12.1 37 119 72 - 6 30 30 - 6 24 13 - 6 31 44 - 6 22 59 -0.18 - 75 0 0 - 6 50 0 17 58 14.6 38 119 72 - 6 53 8 - 6 46 52 - 6 54 22 - 6 45 38 -0.18 - 74 0 0 - 7 12 14 17 58 17.2 39 119 71 - 7 15 22 - 7 9 7 - 7 16 36 - 7 7 53 -0.18 - 73 0 0 - 7 34 4 17 58 19.8 40 119 70 - 7 37 12 - 7 30 57 - 7 38 25 - 7 29 43 -0.18 - 72 0 0 - 7 55 29 17 58 22.4 41 119 69 - 7 58 36 - 7 52 22 - 7 59 50 - 7 51 8 -0.18 - 71 0 0 - 8 16 29 17 58 25.2 42 119 68 - 8 19 35 - 8 13 22 - 8 20 49 - 8 12 9 -0.18 - 70 0 0 - 8 37 3 17 58 27.9 43 119 67 - 8 40 9 - 8 33 57 - 8 41 23 - 8 32 44 -0.18 - 69 0 0 - 8 57 12 17 58 30.7 44 119 66 - 9 0 17 - 8 54 6 - 9 1 31 - 8 52 53 -0.18 - 68 0 0 - 9 16 54 17 58 33.6 45 119 65 - 9 20 0 - 9 13 49 - 9 21 13 - 9 12 36 -0.18 - 67 0 0 - 9 36 11 17 58 36.5 46 119 64 - 9 39 16 - 9 33 6 - 9 40 28 - 9 31 53 -0.18 - 66 0 0 - 9 55 1 17 58 39.4 47 119 63 - 9 58 5 - 9 51 56 - 9 59 18 - 9 50 43 -0.18 - 65 0 0 -10 13 24 17 58 42.4 48 119 62 -10 16 28 -10 10 20 -10 17 41 -10 9 7 -0.19 - 64 0 0 -10 31 20 17 58 45.4 49 119 61 -10 34 24 -10 28 16 -10 35 37 -10 27 4 -0.19 - 63 0 0 -10 48 50 17 58 48.5 50 119 60 -10 51 53 -10 45 46 -10 53 6 -10 44 34 -0.19 - 62 0 0 -11 5 52 17 58 51.6 51 120 59 -11 8 55 -11 2 49 -11 10 7 -11 1 37 -0.19 - 61 0 0 -11 22 27 17 58 54.7 52 120 58 -11 25 30 -11 19 24 -11 26 42 -11 18 12 -0.19 - 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9 52 21 18 3 14.4 50 240 -15 - 9 55 26 - 9 49 17 - 9 56 39 - 9 48 4 -0.19 14 0 0 - 9 33 27 18 3 17.5 49 240 -16 - 9 36 32 - 9 30 22 - 9 37 45 - 9 29 9 -0.19 15 0 0 - 9 14 6 18 3 20.5 48 240 -17 - 9 17 12 - 9 11 1 - 9 18 25 - 9 9 48 -0.19 16 0 0 - 8 54 19 18 3 23.5 47 240 -18 - 8 57 25 - 8 51 13 - 8 58 38 - 8 50 0 -0.19 17 0 0 - 8 34 6 18 3 26.4 46 240 -19 - 8 37 13 - 8 31 0 - 8 38 26 - 8 29 47 -0.19 18 0 0 - 8 13 28 18 3 29.3 45 240 -20 - 8 16 34 - 8 10 21 - 8 17 48 - 8 9 7 -0.19 19 0 0 - 7 52 23 18 3 32.1 44 240 -22 - 7 55 31 - 7 49 16 - 7 56 44 - 7 48 3 -0.19 20 0 0 - 7 30 54 18 3 34.9 43 240 -23 - 7 34 2 - 7 27 47 - 7 35 15 - 7 26 33 -0.19 21 0 0 - 7 9 0 18 3 37.7 41 240 -24 - 7 12 8 - 7 5 52 - 7 13 22 - 7 4 38 -0.19 22 0 0 - 6 46 42 18 3 40.4 40 240 -25 - 6 49 50 - 6 43 33 - 6 51 4 - 6 42 19 -0.19 23 0 0 - 6 23 59 18 3 43.0 39 240 -26 - 6 27 7 - 6 20 50 - 6 28 22 - 6 19 36 -0.19 24 0 0 - 6 0 52 18 3 45.6 38 240 -27 - 6 4 1 - 5 57 43 - 6 5 16 - 5 56 29 -0.19 25 0 0 - 5 37 22 18 3 48.2 37 240 -28 - 5 40 32 - 5 34 13 - 5 41 46 - 5 32 58 -0.19 26 0 0 - 5 13 29 18 3 50.6 36 240 -29 - 5 16 39 - 5 10 19 - 5 17 54 - 5 9 5 -0.19 27 0 0 - 4 49 14 18 3 53.1 35 240 -30 - 4 52 24 - 4 46 4 - 4 53 39 - 4 44 49 -0.19 28 0 0 - 4 24 36 18 3 55.5 34 240 -31 - 4 27 47 - 4 21 26 - 4 29 2 - 4 20 11 -0.19 29 0 0 - 3 59 37 18 3 57.8 33 240 -32 - 4 2 48 - 3 56 26 - 4 4 3 - 3 55 11 -0.19 30 0 0 - 3 34 16 18 4 0.0 32 240 -33 - 3 37 28 - 3 31 5 - 3 38 43 - 3 29 50 -0.19 31 0 0 - 3 8 35 18 4 2.2 31 240 -34 - 3 11 47 - 3 5 24 - 3 13 3 - 3 4 8 -0.18 32 0 0 - 2 42 34 18 4 4.3 30 240 -35 - 2 45 46 - 2 39 22 - 2 47 2 - 2 38 6 -0.18 33 0 0 - 2 16 13 18 4 6.4 29 240 -37 - 2 19 26 - 2 13 1 - 2 20 41 - 2 11 45 -0.18 34 0 0 - 1 49 33 18 4 8.4 27 241 -38 - 1 52 46 - 1 46 21 - 1 54 2 - 1 45 5 -0.18 35 0 0 - 1 22 35 18 4 10.3 26 241 -39 - 1 25 48 - 1 19 22 - 1 27 4 - 1 18 6 -0.18 36 0 0 - 0 55 19 18 4 12.2 25 241 -40 - 0 58 33 - 0 52 6 - 0 59 49 - 0 50 49 -0.18 37 0 0 - 0 27 46 18 4 13.9 24 241 -41 - 0 31 0 - 0 24 32 - 0 32 16 - 0 23 16 -0.18 38 0 0 0 0 4 18 4 15.6 23 241 -42 - 0 3 10 0 3 18 - 0 4 27 0 4 35 -0.18 39 0 0 0 28 10 18 4 17.3 22 241 -43 0 24 55 0 31 24 0 23 39 0 32 41 -0.18 40 0 0 0 56 31 18 4 18.8 21 241 -44 0 53 16 0 59 45 0 51 59 1 1 2 -0.18 41 0 0 1 25 6 18 4 20.3 20 241 -45 1 21 51 1 28 21 1 20 34 1 29 38 -0.18 42 0 0 1 53 55 18 4 21.7 19 241 -46 1 50 39 1 57 10 1 49 23 1 58 27 -0.18 43 0 0 2 22 57 18 4 23.1 18 241 -47 2 19 41 2 26 13 2 18 24 2 27 30 -0.18 44 0 0 2 52 11 18 4 24.3 16 241 -49 2 48 55 2 55 27 2 47 38 2 56 44 -0.18 45 0 0 3 21 37 18 4 25.5 15 241 -50 3 18 21 3 24 53 3 17 4 3 26 10 -0.18 46 0 0 3 51 13 18 4 26.6 14 241 -51 3 47 57 3 54 30 3 46 40 3 55 47 -0.18 47 0 0 4 21 0 18 4 27.6 13 241 -52 4 17 43 4 24 16 4 16 26 4 25 34 -0.18 48 0 0 4 50 55 18 4 28.5 12 241 -53 4 47 38 4 54 12 4 46 21 4 55 29 -0.18 49 0 0 5 20 59 18 4 29.4 11 241 -54 5 17 42 5 24 16 5 16 24 5 25 33 -0.18 50 0 0 5 51 10 18 4 30.2 10 241 -55 5 47 52 5 54 27 5 46 35 5 55 45 -0.18 51 0 0 6 21 27 18 4 30.8 9 242 -56 6 18 10 6 24 45 6 16 52 6 26 2 -0.18 52 0 0 6 51 51 18 4 31.4 7 242 -57 6 48 33 6 55 8 6 47 15 6 56 26 -0.18 53 0 0 7 22 19 18 4 32.0 6 242 -58 7 19 1 7 25 37 7 17 43 7 26 55 -0.18 54 0 0 7 52 51 18 4 32.4 5 242 -59 7 49 33 7 56 9 7 48 16 7 57 27 -0.17 55 0 0 8 23 27 18 4 32.7 4 242 -60 8 20 9 8 26 45 8 18 51 8 28 3 -0.17 56 0 0 8 54 4 18 4 33.0 3 242 -61 8 50 46 8 57 22 8 49 28 8 58 40 -0.17 57 0 0 9 24 43 18 4 33.2 2 242 -62 9 21 25 9 28 2 9 20 7 9 29 20 -0.15 58 0 0 9 55 23 18 4 33.3 1 243 -63 9 52 5 9 58 41 9 50 47 9 59 59 -0.11 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 316-159061 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 13 43.6200 DE: -26 49 11.856 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 13 43.6198 DE: -26 49 11.856 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.600,0.400) * V mag [mag]: 9.9 * B mag [mag]: 10.5 * 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]: 2.26760 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", 94.927° remarks: * orbital elements for (1047)Geisha : Mean anomaly = 301.7140158389 deg Arg. of pericenter = 300.3387283770 deg Long. of node = 78.1830541482 deg Inclination = 5.6653601346 deg Eccentricity = 0.1923064267 Semimajor axis = 2.2411317655 AU Perihelion dist = 1.8101477240 AU Mag: H = 12.00, G = 0.15 Epoch of elements : MJD 60602.75069867 TDT (2024 Oct 19.7507) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Apr24,0.36,2024,10,19,18.016773,-0.002139,0.187819,16.603092,0.189558,0.004946,0.000002,-0.000001,0.000000 -25.1367,-26.8142,-94.04,-10.35,False UCAC4 316-159061,18.22878337,-26.8199601,10.50,9.90,9.58,0.1,0,,18.25437909,-26.8142153,6.66,6.53,0,0,0 1047,Geisha,16.56,10.645,2.2676,0,0,4.811,0.74,,1.0,0 0,301.4935,2024,10,19,300.3387,78.1831,5.6654,0.19231,2.24113,1.81015,12.00,5.0,0.15 1.197,0.0090,0.0009,95,0.0013,Known errors,1.96,0,-1,-1 20241019_159061,60140.65 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:30 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org