IOTA/IOTA-ES occultation update for (143) Adria / UCAC4 274-192101 event on 2023 May 02, 18:30 UT Visible from New Zealand, Australia Summary ------- On 2023 May 02 UT, the 93.4 km diameter asteroid (143) Adria will occult a 12.4 mag star in the constellation Sagittarius for observers along a path across New Zealand, Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.70 mag to 13.84 mag (the magnitude of the asteroid) for at most 13.900 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: 2023 May 02, 18:14 - 2023 May 02, 18:46 * geocentric midpoint of event [JD]: 2460067.27115120 * magnitude of target star: 12.39 * magnitude drop [mag]: 1.70 * estimated maximum duration [s]: 13.900 * Moon: 91 % sunlit, 102° distance * Sun: 113° distance * rough path description: New Zealand, Australia The occultation path -------------------- * approximate projected width [km]: 94 * 1 sigma uncertainty interval [path widths]: +/- 0.20 * 1 sigma uncertainty interval [seconds]: +/- 2.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.008) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.005", 66°) * approx speed of asteroid's shadow [km/s]: 6.7212 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 274-192101 by 143 Adria on 2023 May 2 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 77 0 0 11 19 24 18 14 42.6 0 126 -62 10 47 44 .. .. .. 10 35 7 .. .. .. .... 78 0 0 10 35 43 18 14 42.8 1 126 -63 10 3 55 11 7 29 9 51 15 11 20 6 0.19 79 0 0 9 51 24 18 14 43.6 3 127 -64 9 19 28 10 23 18 9 6 44 10 35 59 0.16 80 0 0 9 6 27 18 14 44.7 4 127 -65 8 34 22 9 38 29 8 21 35 9 51 13 0.15 81 0 0 8 20 53 18 14 46.4 5 127 -66 7 48 40 8 53 3 7 35 50 9 5 50 0.15 82 0 0 7 34 43 18 14 48.5 6 127 -67 7 2 21 8 7 1 6 49 28 8 19 51 0.14 83 0 0 6 47 57 18 14 51.1 8 127 -68 6 15 28 7 20 23 6 2 32 7 33 17 0.14 84 0 0 6 0 39 18 14 54.1 9 127 -68 5 28 2 6 33 12 5 15 3 6 46 9 0.14 85 0 0 5 12 48 18 14 57.7 10 127 -69 4 40 4 5 45 29 4 27 1 5 58 28 0.14 86 0 0 4 24 27 18 15 1.7 12 127 -70 3 51 35 4 57 15 3 38 30 5 10 17 0.14 87 0 0 3 35 36 18 15 6.3 13 127 -71 3 2 38 4 8 31 2 49 30 4 21 36 0.14 88 0 0 2 46 19 18 15 11.4 14 128 -72 2 13 14 3 19 20 2 0 4 3 32 28 0.14 89 0 0 1 56 36 18 15 16.9 15 128 -72 1 23 25 2 29 43 1 10 12 2 42 53 0.13 90 0 0 1 6 29 18 15 23.0 17 128 -73 0 33 13 1 39 42 0 19 57 1 52 54 0.13 91 0 0 0 16 1 18 15 29.6 18 128 -73 - 0 17 21 0 49 20 - 0 30 38 1 2 34 0.13 92 0 0 - 0 34 47 18 15 36.7 19 128 -74 - 1 8 13 - 0 1 23 - 1 21 33 0 11 53 0.13 93 0 0 - 1 25 51 18 15 44.3 21 128 -74 - 1 59 23 - 0 52 23 - 2 12 44 - 0 39 5 0.13 94 0 0 - 2 17 11 18 15 52.5 22 127 -74 - 2 50 46 - 1 43 39 - 3 4 9 - 1 30 19 0.13 95 0 0 - 3 8 43 18 16 1.1 23 127 -74 - 3 42 22 - 2 35 7 - 3 55 47 - 2 21 46 0.13 96 0 0 - 4 0 25 18 16 10.2 25 127 -74 - 4 34 8 - 3 26 46 - 4 47 33 - 3 13 24 0.13 97 0 0 - 4 52 15 18 16 19.8 26 127 -74 - 5 26 0 - 4 18 34 - 5 39 27 - 4 5 10 0.13 98 0 0 - 5 44 10 18 16 29.9 27 127 -74 - 6 17 58 - 5 10 27 - 6 31 25 - 4 57 2 0.13 99 0 0 - 6 36 8 18 16 40.5 29 127 -74 - 7 9 57 - 6 2 22 - 7 23 25 - 5 48 57 0.13 100 0 0 - 7 28 5 18 16 51.6 30 127 -73 - 8 1 55 - 6 54 19 - 8 15 24 - 6 40 53 0.13 101 0 0 - 8 20 0 18 17 3.1 32 127 -73 - 8 53 50 - 7 46 13 - 9 7 19 - 7 32 47 0.13 102 0 0 - 9 11 49 18 17 15.0 33 126 -72 - 9 45 39 - 8 38 2 - 9 59 8 - 8 24 37 0.13 103 0 0 -10 3 30 18 17 27.4 34 126 -72 -10 37 20 - 9 29 44 -10 50 48 - 9 16 19 0.13 104 0 0 -10 55 1 18 17 40.1 36 126 -71 -11 28 49 -10 21 16 -11 42 17 -10 7 51 0.12 105 0 0 -11 46 18 18 17 53.3 37 126 -70 -12 20 4 -11 12 35 -12 33 31 -10 59 10 0.12 106 0 0 -12 37 19 18 18 6.8 38 125 -69 -13 11 3 -12 3 38 -13 24 29 -11 50 15 0.12 107 0 0 -13 28 2 18 18 20.7 40 125 -68 -14 1 43 -12 54 24 -14 15 8 -12 41 1 0.12 108 0 0 -14 18 24 18 18 34.9 41 125 -67 -14 52 1 -13 44 49 -15 5 25 -13 31 28 0.12 109 0 0 -15 8 22 18 18 49.5 42 124 -66 -15 41 56 -14 34 52 -15 55 18 -14 21 32 0.12 110 0 0 -15 57 55 18 19 4.3 43 124 -65 -16 31 24 -15 24 29 -16 44 44 -15 11 11 0.12 111 0 0 -16 47 0 18 19 19.4 45 124 -64 -17 20 24 -16 13 39 -17 33 42 -16 0 23 0.12 112 0 0 -17 35 36 18 19 34.8 46 123 -63 -18 8 54 -17 2 20 -18 22 10 -16 49 6 0.12 113 0 0 -18 23 38 18 19 50.4 47 123 -62 -18 56 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242 37 -33 5 34 -32 6 13 -33 17 24 -31 54 25 0.12 -125 0 0 -32 4 59 18 45 1.8 22 241 38 -32 34 49 -31 35 10 -32 46 42 -31 23 19 0.12 -124 0 0 -31 33 22 18 45 8.1 21 241 39 -32 3 21 -31 3 25 -32 15 18 -30 51 30 0.12 -123 0 0 -31 1 2 18 45 14.2 20 240 39 -31 31 10 -30 30 57 -31 43 10 -30 18 58 0.13 -122 0 0 -30 28 0 18 45 20.0 19 240 40 -30 58 16 -29 57 45 -31 10 19 -29 45 44 0.13 -121 0 0 -29 54 14 18 45 25.6 18 239 41 -30 24 39 -29 23 51 -30 36 46 -29 11 47 0.13 -120 0 0 -29 19 46 18 45 30.9 17 239 42 -29 50 20 -28 49 15 -30 2 30 -28 37 7 0.13 -119 0 0 -28 44 36 18 45 36.0 16 238 43 -29 15 18 -28 13 57 -29 27 31 -28 1 45 0.13 -118 0 0 -28 8 44 18 45 40.8 15 238 44 -28 39 34 -27 37 57 -28 51 51 -27 25 42 0.13 -117 0 0 -27 32 11 18 45 45.3 14 237 45 -28 3 9 -27 1 15 -28 15 29 -26 48 57 0.14 -116 0 0 -26 54 56 18 45 49.5 13 237 46 -27 26 2 -26 23 53 -27 38 25 -26 11 32 0.14 -115 0 0 -26 17 2 18 45 53.3 12 236 47 -26 48 15 -25 45 50 -27 0 42 -25 33 26 0.14 -114 0 0 -25 38 27 18 45 56.9 10 236 47 -26 9 48 -25 7 8 -26 22 17 -24 54 41 0.14 -113 0 0 -24 59 13 18 46 0.2 9 235 48 -25 30 42 -24 27 47 -25 43 14 -24 15 17 0.15 -112 0 0 -24 19 21 18 46 3.1 8 235 49 -24 50 57 -23 47 48 -25 3 32 -23 35 15 0.15 -111 0 0 -23 38 52 18 46 5.6 7 234 50 -24 10 35 -23 7 12 -24 23 12 -22 54 36 0.16 -110 0 0 -22 57 46 18 46 7.8 6 234 51 -23 29 35 -22 25 59 -23 42 16 -22 13 21 0.17 -109 0 0 -22 16 5 18 46 9.6 5 234 52 -22 48 0 -21 44 12 -23 0 43 -21 31 31 0.18 -108 0 0 -21 33 49 18 46 11.1 4 233 53 -22 5 51 -21 1 50 -22 18 36 -20 49 7 0.20 -107 0 0 -20 51 0 18 46 12.1 2 233 53 -21 23 8 -20 18 55 -21 35 55 -20 6 10 0.23 -106 0 0 -20 7 39 18 46 12.8 1 233 54 -20 39 52 -19 35 29 -20 52 42 -19 22 41 0.34 -105 0 0 -19 23 48 18 46 13.0 0 232 55 -19 56 6 .. .. .. -20 8 58 .. .. .. 8.15 Uncertainty in time = +/- 4 secs Prediction of 2023 Apr 29.2 Data for the target star ------------------------ * name: UCAC4 274-192101 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 29 09.8404 DE: -35 21 55.470 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 29 09.8405 DE: -35 21 55.470 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (143) Adria asteroid class: approx. diameter [km]: 93 approx. diameter ["]: 0.063 distance from Earth [AU]: 2.04530 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#70 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): 0.018", 0.005", 65.928° remarks: * orbital elements for (143)Adria : Mean anomaly = 36.5199264124 deg Arg. of pericenter = 252.0470352105 deg Long. of node = 332.9654657614 deg Inclination = 11.4435892444 deg Eccentricity = 0.0732399921 Semimajor axis = 2.7609818037 AU Perihelion dist = 2.5587675180 AU Mag: H = 9.17, G = 0.15 Epoch of elements : MJD 60066.77118056 TDT (2023 May 02.7712) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#702023Apr24,13.90,2023,5,2,18.507629,-0.027844,-0.080882,3.588615,-1.230267,-0.005120,-0.000301,0.000001,0.000000 154.6480,-35.3167,-98.36,15.47,False UCAC4 274-192101,19.48606675,-35.3654084,0.00,12.39,0.00,0.0,0,,19.51163599,-35.3166524,1.70,0.00,0,0,0 143,Adria,13.84,93.4,2.0453,0,0,1.260,-5.29,,4.8,0 0,36.3542,2023,5,2,252.0470,332.9655,11.4436,0.07324,2.76098,2.55877,9.18,5.0,0.15 1.199,0.0177,0.0047,66,0.0125,Known errors,-1.00,-1,-1,-1 20230502_192101,60063.18 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Apr 29, 04:18 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org