IOTA/IOTA-ES occultation update for (828) Lindemannia / UCAC4 331-091224 event on 2023 Sep 10, 09:07 UT Visible from Australia Summary ------- On 2023 Sep 10 UT, the 52.1 km diameter asteroid (828) Lindemannia will occult a 11.7 mag star in the constellation Ophiuchus for observers along a path across Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.54 mag to 16.17 mag (the magnitude of the asteroid) for at most 3.140 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: 100 * date and approx. time of event: 2023 Sep 10, 09:01 - 2023 Sep 10, 09:14 * geocentric midpoint of event [JD]: 2460197.88050292 * magnitude of target star: 11.65 * magnitude drop [mag]: 4.54 * estimated maximum duration [s]: 3.140 * Moon: 19 % sunlit, 141° distance * Sun: 90° distance * rough path description: Australia The occultation path -------------------- * approximate projected width [km]: 52 * 1 sigma uncertainty interval [path widths]: +/- 0.02 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.006, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.006", 0.000", 96°) * approx speed of asteroid's shadow [km/s]: 16.5767 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 331-091224 by 828 Lindemannia on 2023 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 44 0 0 3 42 15 9 1 30.8 1 114 89 3 26 45 3 57 44 3 26 8 3 58 22 .... 45 0 0 3 15 12 9 1 31.0 2 114 88 2 59 43 3 30 42 2 59 5 3 31 20 0.08 46 0 0 2 48 5 9 1 31.3 3 114 87 2 32 35 3 3 35 2 31 57 3 4 13 0.05 47 0 0 2 20 53 9 1 31.7 4 114 86 2 5 23 2 36 24 2 4 45 2 37 2 0.04 48 0 0 1 53 38 9 1 32.3 5 114 85 1 38 7 2 9 9 1 37 29 2 9 47 0.03 49 0 0 1 26 20 9 1 33.0 6 114 84 1 10 49 1 41 51 1 10 11 1 42 29 0.02 50 0 0 0 58 59 9 1 33.8 7 114 83 0 43 28 1 14 30 0 42 50 1 15 8 0.02 51 0 0 0 31 37 9 1 34.8 8 114 82 0 16 6 0 47 9 0 15 28 0 47 46 0.02 52 0 0 0 4 15 9 1 36.0 9 114 81 - 0 11 17 0 19 46 - 0 11 54 0 20 24 0.02 53 0 0 - 0 23 8 9 1 37.3 11 114 79 - 0 38 39 - 0 7 37 - 0 39 17 - 0 6 59 0.01 54 0 0 - 0 50 30 9 1 38.7 12 114 78 - 1 6 2 - 0 34 59 - 1 6 39 - 0 34 21 0.01 55 0 0 - 1 17 51 9 1 40.3 13 114 77 - 1 33 22 - 1 2 20 - 1 34 0 - 1 1 42 0.01 56 0 0 - 1 45 10 9 1 42.0 14 114 76 - 2 0 41 - 1 29 39 - 2 1 19 - 1 29 1 0.01 57 0 0 - 2 12 26 9 1 43.8 15 114 75 - 2 27 57 - 1 56 56 - 2 28 34 - 1 56 18 0.01 58 0 0 - 2 39 39 9 1 45.8 16 114 74 - 2 55 9 - 2 24 8 - 2 55 47 - 2 23 31 0.01 59 0 0 - 3 6 47 9 1 47.9 17 114 73 - 3 22 17 - 2 51 17 - 3 22 55 - 2 50 39 0.01 60 0 0 - 3 33 50 9 1 50.2 18 114 72 - 3 49 20 - 3 18 21 - 3 49 57 - 3 17 43 0.01 61 0 0 - 4 0 48 9 1 52.5 19 114 71 - 4 16 17 - 3 45 19 - 4 16 55 - 3 44 41 0.01 62 0 0 - 4 27 39 9 1 55.1 20 114 70 - 4 43 8 - 4 12 11 - 4 43 45 - 4 11 33 0.01 63 0 0 - 4 54 24 9 1 57.7 22 114 68 - 5 9 51 - 4 38 56 - 5 10 29 - 4 38 18 0.01 64 0 0 - 5 21 0 9 2 0.5 23 114 67 - 5 36 27 - 5 5 33 - 5 37 5 - 5 4 56 0.00 65 0 0 - 5 47 28 9 2 3.4 24 114 66 - 6 2 55 - 5 32 2 - 6 3 32 - 5 31 24 0.00 66 0 0 - 6 13 47 9 2 6.4 25 114 65 - 6 29 13 - 5 58 22 - 6 29 51 - 5 57 44 0.00 67 0 0 - 6 39 57 9 2 9.6 26 114 64 - 6 55 21 - 6 24 32 - 6 55 59 - 6 23 55 0.00 68 0 0 - 7 5 56 9 2 12.9 27 113 63 - 7 21 20 - 6 50 32 - 7 21 57 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36.4 43 254 -47 -18 24 19 -17 54 56 -18 24 55 -17 54 20 0.00 180 0 0 -17 52 58 9 12 41.0 42 253 -48 -18 7 41 -17 38 15 -18 8 17 -17 37 39 0.00 -179 0 0 -17 35 56 9 12 45.5 41 253 -49 -17 50 40 -17 21 11 -17 51 16 -17 20 35 0.00 -178 0 0 -17 18 31 9 12 50.0 40 253 -50 -17 33 17 -17 3 45 -17 33 53 -17 3 9 0.00 -177 0 0 -17 0 44 9 12 54.3 39 252 -51 -17 15 32 -16 45 57 -17 16 8 -16 45 21 0.00 -176 0 0 -16 42 35 9 12 58.6 38 252 -52 -16 57 24 -16 27 46 -16 58 1 -16 27 10 0.00 -175 0 0 -16 24 5 9 13 2.8 37 252 -53 -16 38 55 -16 9 14 -16 39 31 -16 8 38 0.00 -174 0 0 -16 5 12 9 13 6.9 36 252 -54 -16 20 4 -15 50 20 -16 20 40 -15 49 44 0.00 -173 0 0 -15 45 58 9 13 10.9 35 251 -55 -16 0 52 -15 31 5 -16 1 28 -15 30 28 0.00 -172 0 0 -15 26 23 9 13 14.8 34 251 -56 -15 41 18 -15 11 28 -15 41 55 -15 10 52 0.00 -171 0 0 -15 6 28 9 13 18.6 33 251 -57 -15 21 24 -14 51 31 -15 22 1 -14 50 55 0.00 -170 0 0 -14 46 11 9 13 22.3 32 251 -58 -15 1 9 -14 31 13 -15 1 46 -14 30 37 0.00 -169 0 0 -14 25 35 9 13 26.0 31 250 -59 -14 40 35 -14 10 36 -14 41 11 -14 9 59 0.00 -168 0 0 -14 4 39 9 13 29.5 30 250 -60 -14 19 40 -13 49 38 -14 20 16 -13 49 1 0.00 -167 0 0 -13 43 23 9 13 32.9 29 250 -61 -13 58 26 -13 28 21 -13 59 2 -13 27 44 0.00 -166 0 0 -13 21 48 9 13 36.3 28 250 -62 -13 36 52 -13 6 45 -13 37 29 -13 6 8 0.00 -165 0 0 -12 59 55 9 13 39.5 27 249 -63 -13 15 0 -12 44 50 -13 15 37 -12 44 13 0.00 -164 0 0 -12 37 43 9 13 42.6 26 249 -64 -12 52 50 -12 22 36 -12 53 27 -12 21 59 0.00 -163 0 0 -12 15 13 9 13 45.6 24 249 -65 -12 30 21 -12 0 5 -12 30 58 -11 59 28 0.00 -162 0 0 -11 52 26 9 13 48.5 23 249 -66 -12 7 35 -11 37 17 -12 8 12 -11 36 40 0.00 -161 0 0 -11 29 22 9 13 51.3 22 249 -67 -11 44 32 -11 14 11 -11 45 9 -11 13 34 0.00 -160 0 0 -11 6 1 9 13 53.9 21 248 -69 -11 21 13 -10 50 49 -11 21 50 -10 50 12 0.00 -159 0 0 -10 42 24 9 13 56.5 20 248 -70 -10 57 37 -10 27 10 -10 58 14 -10 26 33 0.00 -158 0 0 -10 18 31 9 13 58.9 19 248 -71 -10 33 45 -10 3 17 -10 34 23 -10 2 39 0.00 -157 0 0 - 9 54 23 9 14 1.2 18 248 -72 -10 9 39 - 9 39 8 -10 10 16 - 9 38 30 0.01 -156 0 0 - 9 30 1 9 14 3.4 17 248 -73 - 9 45 17 - 9 14 44 - 9 45 55 - 9 14 7 0.01 -155 0 0 - 9 5 24 9 14 5.4 16 247 -74 - 9 20 42 - 8 50 6 - 9 21 19 - 8 49 29 0.01 -154 0 0 - 8 40 34 9 14 7.4 15 247 -75 - 8 55 53 - 8 25 15 - 8 56 31 - 8 24 38 0.01 -153 0 0 - 8 15 31 9 14 9.2 14 247 -76 - 8 30 51 - 8 0 11 - 8 31 29 - 7 59 34 0.01 -152 0 0 - 7 50 16 9 14 10.8 13 247 -77 - 8 5 37 - 7 34 55 - 8 6 14 - 7 34 17 0.01 -151 0 0 - 7 24 49 9 14 12.4 12 247 -78 - 7 40 11 - 7 9 27 - 7 40 48 - 7 8 49 0.01 -150 0 0 - 6 59 10 9 14 13.8 11 247 -79 - 7 14 33 - 6 43 48 - 7 15 11 - 6 43 10 0.01 -149 0 0 - 6 33 21 9 14 15.0 9 247 -80 - 6 48 45 - 6 17 58 - 6 49 23 - 6 17 20 0.01 -148 0 0 - 6 7 23 9 14 16.2 8 247 -81 - 6 22 47 - 5 51 58 - 6 23 25 - 5 51 21 0.02 -147 0 0 - 5 41 14 9 14 17.2 7 246 -82 - 5 56 39 - 5 25 49 - 5 57 17 - 5 25 12 0.02 -146 0 0 - 5 14 57 9 14 18.0 6 246 -83 - 5 30 23 - 4 59 32 - 5 31 1 - 4 58 54 0.02 -145 0 0 - 4 48 32 9 14 18.7 5 246 -84 - 5 3 59 - 4 33 6 - 5 4 37 - 4 32 28 0.03 -144 0 0 - 4 22 0 9 14 19.3 4 246 -85 - 4 37 27 - 4 6 33 - 4 38 5 - 4 5 55 0.03 -143 0 0 - 3 55 21 9 14 19.8 3 246 -86 - 4 10 49 - 3 39 53 - 4 11 26 - 3 39 16 0.05 -142 0 0 - 3 28 36 9 14 20.1 2 246 -87 - 3 44 4 - 3 13 8 - 3 44 42 - 3 12 30 0.08 -141 0 0 - 3 1 45 9 14 20.2 1 246 -87 - 3 17 14 - 2 46 17 - 3 17 52 - 2 45 39 0.20 Uncertainty in time = +/- 1 secs Prediction of 2023 Aug 27.0 Data for the target star ------------------------ * name: UCAC4 331-091224 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 03 19.5622 DE: -23 59 28.930 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 03 19.5621 DE: -23 59 28.930 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (828) Lindemannia asteroid class: approx. diameter [km]: 52 approx. diameter ["]: 0.024 distance from Earth [AU]: 2.94280 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#114 date of fit: 2023 Aug 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): 0.006", 0.000", 95.927° remarks: * orbital elements for (828)Lindemannia : Mean anomaly = 338.5060626372 deg Arg. of pericenter = 296.8532041936 deg Long. of node = 1.7964751100 deg Inclination = 1.1247084825 deg Eccentricity = 0.0272321040 Semimajor axis = 3.1906172489 AU Perihelion dist = 3.1037300281 AU Mag: H = 10.39, G = 0.15 Epoch of elements : MJD 60197.38048611 TDT (2023 Sep 10.3805) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1142023Aug24,3.14,2023,9,10,9.132070,0.000467,0.011679,9.337464,-0.594085,0.005731,-0.000549,0.000000,0.000000 130.0608,-24.0255,42.30,4.97,False UCAC4 331-091224,17.05543396,-23.9913694,0.00,11.65,0.00,0.0,4,,17.07930494,-24.0254911,4.54,0.00,0,0,0 828,Lindemannia,16.17,52.100,2.9428,0,0,2.037,-1.78,,2.6,0 0,338.4403,2023,9,10,296.8532,1.7965,1.1247,0.02723,3.19062,3.10373,10.40,5.0,0.15 1.020,0.0060,0.0004,96,0.0060,Known errors,-1.00,0,-1,-1 20230910_091224,60182.99 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Aug 26, 23:43 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org