IOTA/IOTA-ES occultation update for (2139) Makharadze / UCAC4 347-154247 event on 2024 Sep 10, 23:18 UT Visible from Summary ------- On 2024 Sep 10 UT, the 17.235 km diameter asteroid (2139) Makharadze will occult a 11.1 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 5.39 mag to 16.52 mag (the magnitude of the asteroid) for at most 1.850 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 10, 23:07 - 2024 Sep 10, 23:29 * geocentric midpoint of event [JD]: 2460564.47109313 * magnitude of target star: 11.14 * magnitude drop [mag]: 5.39 * estimated maximum duration [s]: 1.850 * Moon: 46 % sunlit, 27° distance * Sun: 111° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 18 * 1 sigma uncertainty interval [path widths]: +/- 0.29 * 1 sigma uncertainty interval [seconds]: +/- 3.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.029, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.029", 0.004", 82°) * approx speed of asteroid's shadow [km/s]: 9.3289 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 347-154247 by 2139 Makharadze on 2024 Sep 10 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 -141 0 0 12 29 5 23 7 27.4 1 111 62 12 23 53 12 34 18 12 20 53 12 37 18 .... -140 0 0 12 6 20 23 7 27.6 2 112 62 12 1 8 12 11 33 11 58 8 12 14 32 -0.12 -139 0 0 11 43 40 23 7 28.1 3 112 61 11 38 27 11 48 52 11 35 28 11 51 52 -0.18 -138 0 0 11 21 4 23 7 28.9 4 112 60 11 15 52 11 26 16 11 12 53 11 29 15 -0.21 -137 0 0 10 58 33 23 7 29.9 5 112 59 10 53 22 11 3 45 10 50 23 11 6 45 -0.23 -136 0 0 10 36 9 23 7 31.1 6 112 58 10 30 58 10 41 21 10 27 59 10 44 20 -0.24 -135 0 0 10 13 51 23 7 32.6 7 112 57 10 8 40 10 19 3 10 5 41 10 22 2 -0.24 -134 0 0 9 51 41 23 7 34.3 8 113 56 9 46 30 9 56 52 9 43 31 9 59 51 -0.25 -133 0 0 9 29 38 23 7 36.2 9 113 55 9 24 27 9 34 49 9 21 28 9 37 48 -0.25 -132 0 0 9 7 43 23 7 38.4 10 113 54 9 2 32 9 12 54 8 59 34 9 15 52 -0.26 -131 0 0 8 45 57 23 7 40.9 11 113 53 8 40 47 8 51 7 8 37 48 8 54 6 -0.26 -130 0 0 8 24 20 23 7 43.6 12 113 52 8 19 10 8 29 30 8 16 12 8 32 29 -0.26 -129 0 0 8 2 53 23 7 46.5 13 114 51 7 57 44 8 8 3 7 54 46 8 11 2 -0.26 -128 0 0 7 41 37 23 7 49.7 14 114 50 7 36 28 7 46 47 7 33 30 7 49 45 -0.27 -127 0 0 7 20 32 23 7 53.1 15 114 49 7 15 22 7 25 41 7 12 25 7 28 39 -0.27 -126 0 0 6 59 37 23 7 56.7 17 114 48 6 54 29 7 4 46 6 51 31 7 7 44 -0.27 -125 0 0 6 38 55 23 8 0.6 18 114 47 6 33 47 6 44 4 6 30 50 6 47 1 -0.27 -124 0 0 6 18 26 23 8 4.8 19 114 46 6 13 17 6 23 34 6 10 20 6 26 31 -0.27 -123 0 0 5 58 9 23 8 9.1 20 114 45 5 53 1 6 3 17 5 50 4 6 6 14 -0.27 -122 0 0 5 38 6 23 8 13.7 21 115 44 5 32 58 5 43 13 5 30 1 5 46 10 -0.27 -121 0 0 5 18 16 23 8 18.5 22 115 43 5 13 9 5 23 23 5 10 13 5 26 20 -0.27 -120 0 0 4 58 41 23 8 23.6 23 115 42 4 53 34 5 3 48 4 50 38 5 6 45 -0.28 -119 0 0 4 39 21 23 8 28.9 24 115 41 4 34 15 4 44 28 4 31 19 4 47 24 -0.28 -118 0 0 4 20 16 23 8 34.4 25 115 40 4 15 10 4 25 22 4 12 14 4 28 19 -0.28 -117 0 0 4 1 27 23 8 40.1 26 115 39 3 56 22 4 6 33 3 53 26 4 9 29 -0.28 -116 0 0 3 42 54 23 8 46.1 27 115 38 3 37 49 3 48 0 3 34 54 3 50 56 -0.28 -115 0 0 3 24 38 23 8 52.2 28 116 37 3 19 33 3 29 43 3 16 38 3 32 39 -0.28 -114 0 0 3 6 39 23 8 58.6 29 116 36 3 1 35 3 11 44 2 58 40 3 14 39 -0.28 -113 0 0 2 48 58 23 9 5.2 30 116 35 2 43 53 2 54 2 2 40 59 2 56 57 -0.28 -112 0 0 2 31 34 23 9 12.0 31 116 34 2 26 30 2 36 38 2 23 35 2 39 32 -0.28 -111 0 0 2 14 28 23 9 19.0 32 116 33 2 9 25 2 19 32 2 6 30 2 22 26 -0.28 -110 0 0 1 57 41 23 9 26.3 33 116 32 1 52 38 2 2 44 1 49 44 2 5 39 -0.28 -109 0 0 1 41 13 23 9 33.7 34 117 31 1 36 11 1 46 16 1 33 17 1 49 10 -0.28 -108 0 0 1 25 5 23 9 41.3 35 117 30 1 20 3 1 30 7 1 17 9 1 33 1 -0.28 -107 0 0 1 9 16 23 9 49.1 37 117 29 1 4 14 1 14 18 1 1 21 1 17 11 -0.28 -106 0 0 0 53 47 23 9 57.1 38 117 28 0 48 46 0 58 48 0 45 52 1 1 42 -0.29 -105 0 0 0 38 38 23 10 5.3 39 117 27 0 33 37 0 43 40 0 30 44 0 46 33 -0.29 -104 0 0 0 23 51 23 10 13.6 40 118 26 0 18 50 0 28 51 0 15 57 0 31 44 -0.29 -103 0 0 0 9 24 23 10 22.2 41 118 25 0 4 23 0 14 24 0 1 31 0 17 17 -0.29 -102 0 0 - 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29 0 0 1 9 39 23 24 33.5 52 233 -53 1 4 36 1 14 41 1 1 43 1 17 35 -0.29 - 28 0 0 1 25 38 23 24 44.0 51 234 -54 1 20 36 1 30 41 1 17 42 1 33 35 -0.29 - 27 0 0 1 41 59 23 24 54.3 50 234 -55 1 36 56 1 47 2 1 34 1 1 49 56 -0.29 - 26 0 0 1 58 39 23 25 4.6 49 235 -56 1 53 35 2 3 42 1 50 41 2 6 37 -0.29 - 25 0 0 2 15 39 23 25 14.6 48 235 -56 2 10 35 2 20 43 2 7 40 2 23 38 -0.29 - 24 0 0 2 32 58 23 25 24.5 47 236 -57 2 27 54 2 38 2 2 24 59 2 40 57 -0.29 - 23 0 0 2 50 36 23 25 34.3 46 236 -58 2 45 31 2 55 40 2 42 36 2 58 36 -0.29 - 22 0 0 3 8 32 23 25 43.9 45 236 -59 3 3 27 3 13 37 3 0 32 3 16 33 -0.29 - 21 0 0 3 26 47 23 25 53.3 44 237 -60 3 21 41 3 31 52 3 18 46 3 34 48 -0.29 - 20 0 0 3 45 19 23 26 2.6 43 237 -61 3 40 13 3 50 25 3 37 17 3 53 21 -0.29 - 19 0 0 4 4 8 23 26 11.6 42 237 -62 3 59 2 4 9 15 3 56 6 4 12 11 -0.29 - 18 0 0 4 23 14 23 26 20.5 41 238 -63 4 18 8 4 28 21 4 15 11 4 31 18 -0.29 - 17 0 0 4 42 37 23 26 29.2 40 238 -64 4 37 30 4 47 44 4 34 33 4 50 41 -0.29 - 16 0 0 5 2 15 23 26 37.8 39 238 -65 4 57 8 5 7 23 4 54 11 5 10 20 -0.29 - 15 0 0 5 22 9 23 26 46.1 38 239 -66 5 17 1 5 27 17 5 14 4 5 30 14 -0.29 - 14 0 0 5 42 18 23 26 54.2 37 239 -66 5 37 9 5 47 26 5 34 12 5 50 23 -0.29 - 13 0 0 6 2 41 23 27 2.2 36 239 -67 5 57 32 6 7 49 5 54 35 6 10 47 -0.29 - 12 0 0 6 23 17 23 27 9.9 34 240 -68 6 18 9 6 28 26 6 15 11 6 31 24 -0.29 - 11 0 0 6 44 8 23 27 17.4 33 240 -69 6 38 59 6 49 17 6 36 1 6 52 15 -0.29 - 10 0 0 7 5 11 23 27 24.7 32 240 -69 7 0 1 7 10 20 6 57 3 7 13 19 -0.29 - 9 0 0 7 26 26 23 27 31.8 31 240 -70 7 21 16 7 31 36 7 18 18 7 34 34 -0.29 - 8 0 0 7 47 53 23 27 38.7 30 241 -70 7 42 43 7 53 4 7 39 45 7 56 2 -0.29 - 7 0 0 8 9 32 23 27 45.4 29 241 -71 8 4 21 8 14 42 8 1 23 8 17 41 -0.29 - 6 0 0 8 31 21 23 27 51.8 28 241 -72 8 26 10 8 36 32 8 23 12 8 39 31 -0.29 - 5 0 0 8 53 20 23 27 58.0 27 241 -72 8 48 9 8 58 31 8 45 10 9 1 30 -0.29 - 4 0 0 9 15 29 23 28 4.0 26 242 -72 9 10 18 9 20 40 9 7 19 9 23 40 -0.29 - 3 0 0 9 37 47 23 28 9.7 25 242 -73 9 32 35 9 42 58 9 29 36 9 45 58 -0.29 - 2 0 0 10 0 13 23 28 15.3 24 242 -73 9 55 1 10 5 25 9 52 2 10 8 24 -0.29 - 1 0 0 10 22 47 23 28 20.6 23 242 -73 10 17 35 10 27 59 10 14 35 10 30 58 -0.29 0 0 0 10 45 28 23 28 25.6 22 243 -73 10 40 15 10 50 40 10 37 16 10 53 40 -0.28 1 0 0 11 8 15 23 28 30.4 21 243 -73 11 3 3 11 13 28 11 0 3 11 16 28 -0.28 2 0 0 11 31 9 23 28 35.0 20 243 -73 11 25 56 11 36 22 11 22 56 11 39 22 -0.28 3 0 0 11 54 8 23 28 39.3 19 243 -73 11 48 55 11 59 21 11 45 55 12 2 21 -0.28 4 0 0 12 17 12 23 28 43.4 17 244 -73 12 11 59 12 22 25 12 8 59 12 25 25 -0.28 5 0 0 12 40 20 23 28 47.3 16 244 -73 12 35 7 12 45 33 12 32 6 12 48 34 -0.28 6 0 0 13 3 31 23 28 50.9 15 244 -73 12 58 18 13 8 45 12 55 18 13 11 45 -0.28 7 0 0 13 26 46 23 28 54.3 14 244 -72 13 21 33 13 32 0 13 18 32 13 35 0 -0.28 8 0 0 13 50 3 23 28 57.4 13 245 -72 13 44 50 13 55 17 13 41 49 13 58 18 -0.28 9 0 0 14 13 22 23 29 0.3 12 245 -71 14 8 8 14 18 36 14 5 8 14 21 37 -0.28 10 0 0 14 36 42 23 29 2.9 11 245 -71 14 31 28 14 41 56 14 28 28 14 44 57 -0.28 11 0 0 15 0 3 23 29 5.3 10 245 -70 14 54 49 15 5 17 14 51 49 15 8 18 -0.28 12 0 0 15 23 24 23 29 7.5 9 246 -70 15 18 10 15 28 38 15 15 9 15 31 39 -0.28 13 0 0 15 46 44 23 29 9.4 8 246 -69 15 41 30 15 51 58 15 38 30 15 54 59 -0.28 14 0 0 16 10 3 23 29 11.1 7 246 -68 16 4 49 16 15 18 16 1 49 16 18 18 -0.28 15 0 0 16 33 21 23 29 12.6 6 246 -68 16 28 7 16 38 35 16 25 6 16 41 36 -0.28 16 0 0 16 56 36 23 29 13.8 5 247 -67 16 51 22 17 1 51 16 48 22 17 4 51 -0.28 17 0 0 17 19 49 23 29 14.7 4 247 -66 17 14 35 17 25 3 17 11 34 17 28 4 -0.28 18 0 0 17 42 58 23 29 15.5 3 247 -65 17 37 44 17 48 12 17 34 43 17 51 13 -0.29 19 0 0 18 6 3 23 29 16.0 2 248 -65 18 0 49 18 11 18 17 57 49 18 14 18 -0.29 20 0 0 18 29 4 23 29 16.3 1 248 -64 18 23 50 18 34 18 18 20 50 18 37 19 -0.29 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 347-154247 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 41 57.5730 DE: -20 39 20.096 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 41 57.5726 DE: -20 39 20.096 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.1 * B mag [mag]: 11.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2139) Makharadze asteroid class: approx. diameter [km]: 17 approx. diameter ["]: 0.017 distance from Earth [AU]: 1.41430 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 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): 0.029", 0.004", 82.445° remarks: * orbital elements for (2139)Makharadze : Mean anomaly = 349.2398800723 deg Arg. of pericenter = 67.4275839393 deg Long. of node = 256.1030749951 deg Inclination = 2.1794451735 deg Eccentricity = 0.1872095494 Semimajor axis = 2.4619632518 AU Perihelion dist = 2.0010602208 AU Mag: H = 13.01, G = 0.15 Epoch of elements : MJD 60563.97109296 TDT (2024 Sep 10.9711) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Apr24,1.85,2024,9,10,23.306235,-0.015565,0.287793,5.257153,0.296626,0.004847,0.000288,0.000000,0.000000 -59.2127,-20.6324,-170.43,4.46,False UCAC4 347-154247,18.69932585,-20.6555820,11.52,11.14,10.93,0.0,0,,18.72392344,-20.6323687,5.38,5.14,0,0,0 2139,Makharadze,16.52,17.235,1.4143,0,0,2.330,1.85,,1.6,0 0,348.9921,2024,9,10,67.4276,256.1031,2.1794,0.18721,2.46196,2.00106,13.01,5.0,0.15 1.288,0.0290,0.0043,82,0.0048,Known errors,0.64,0,-1,-1 20240910_154247,60140.55 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:17 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org