IOTA/IOTA-ES occultation update for (9037) 1990 UJ2 / UCAC4 354-189146 event on 2024 Nov 06, 03:02 UT Visible from Summary ------- On 2024 Nov 06 UT, the 9.63478861184941 km diameter asteroid (9037) 1990 UJ2 will occult a 11.1 mag star in the constellation Capricornus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.94 mag to 18.00 mag (the magnitude of the asteroid) for at most 0.490 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: 95 * date and approx. time of event: 2024 Nov 06, 02:57 - 2024 Nov 06, 03:08 * geocentric midpoint of event [JD]: 2460620.62693391 * magnitude of target star: 11.06 * magnitude drop [mag]: 6.94 * estimated maximum duration [s]: 0.490 * Moon: 19 % sunlit, 38° distance * Sun: 90° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 10 * 1 sigma uncertainty interval [path widths]: +/- 0.43 * 1 sigma uncertainty interval [seconds]: +/- 1.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.018, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.003", 80°) * approx speed of asteroid's shadow [km/s]: 19.9843 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 354-189146 by 9037 1990 UJ2 on 2024 Nov 6 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 129 0 0 -23 52 50 2 57 33.2 1 111 82 -23 55 42 -23 49 57 -23 58 11 -23 47 28 .... 130 0 0 -24 13 40 2 57 33.4 2 110 82 -24 16 32 -24 10 47 -24 19 1 -24 8 19 0.21 131 0 0 -24 34 12 2 57 33.6 3 110 81 -24 37 4 -24 31 19 -24 39 32 -24 28 51 0.20 132 0 0 -24 54 25 2 57 33.9 4 109 81 -24 57 17 -24 51 33 -24 59 45 -24 49 5 0.20 133 0 0 -25 14 19 2 57 34.3 5 109 81 -25 17 11 -25 11 28 -25 19 39 -25 9 0 0.19 134 0 0 -25 33 55 2 57 34.8 6 109 80 -25 36 46 -25 31 3 -25 39 14 -25 28 36 0.19 135 0 0 -25 53 11 2 57 35.4 7 108 80 -25 56 2 -25 50 20 -25 58 29 -25 47 53 0.19 136 0 0 -26 12 7 2 57 36.1 8 108 79 -26 14 58 -26 9 17 -26 17 25 -26 6 50 0.19 137 0 0 -26 30 44 2 57 36.8 9 107 78 -26 33 35 -26 27 54 -26 36 2 -26 25 27 0.19 138 0 0 -26 49 1 2 57 37.7 9 107 78 -26 51 51 -26 46 11 -26 54 18 -26 43 44 0.19 139 0 0 -27 6 58 2 57 38.6 10 106 77 -27 9 48 -27 4 7 -27 12 14 -27 1 41 0.19 140 0 0 -27 24 34 2 57 39.6 11 106 76 -27 27 24 -27 21 44 -27 29 49 -27 19 18 0.19 141 0 0 -27 41 49 2 57 40.7 12 105 75 -27 44 39 -27 39 0 -27 47 4 -27 36 34 0.19 142 0 0 -27 58 44 2 57 41.9 13 105 75 -28 1 33 -27 55 55 -28 3 59 -27 53 30 0.19 143 0 0 -28 15 18 2 57 43.1 14 104 74 -28 18 7 -28 12 29 -28 20 32 -28 10 4 0.19 144 0 0 -28 31 31 2 57 44.4 15 104 73 -28 34 20 -28 28 42 -28 36 45 -28 26 18 0.19 145 0 0 -28 47 23 2 57 45.8 16 103 72 -28 50 11 -28 44 35 -28 52 36 -28 42 10 0.19 146 0 0 -29 2 54 2 57 47.3 17 103 71 -29 5 42 -29 0 5 -29 8 6 -28 57 41 0.19 147 0 0 -29 18 3 2 57 48.9 18 102 71 -29 20 51 -29 15 15 -29 23 15 -29 12 51 0.19 148 0 0 -29 32 51 2 57 50.5 19 102 70 -29 35 38 -29 30 3 -29 38 2 -29 27 39 0.19 149 0 0 -29 47 17 2 57 52.2 20 101 69 -29 50 4 -29 44 30 -29 52 28 -29 42 6 0.19 150 0 0 -30 1 21 2 57 54.0 21 101 68 -30 4 8 -29 58 34 -30 6 32 -29 56 11 0.19 151 0 0 -30 15 4 2 57 55.8 21 100 67 -30 17 51 -30 12 17 -30 20 14 -30 9 54 0.18 152 0 0 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37 17 -32 45 5 -32 34 57 0.18 165 0 0 -32 48 35 2 58 28.1 34 92 55 -32 51 19 -32 45 52 -32 53 39 -32 43 31 0.18 166 0 0 -32 56 47 2 58 30.8 35 92 54 -32 59 30 -32 54 4 -33 1 51 -32 51 44 0.18 167 0 0 -33 4 37 2 58 33.6 35 91 54 -33 7 20 -33 1 54 -33 9 40 -32 59 34 0.18 168 0 0 -33 12 4 2 58 36.4 36 91 53 -33 14 47 -33 9 21 -33 17 7 -33 7 2 0.18 169 0 0 -33 19 10 2 58 39.3 37 90 52 -33 21 52 -33 16 27 -33 24 12 -33 14 7 0.18 170 0 0 -33 25 53 2 58 42.3 38 89 51 -33 28 35 -33 23 10 -33 30 55 -33 20 50 0.18 171 0 0 -33 32 13 2 58 45.3 39 89 50 -33 34 56 -33 29 31 -33 37 15 -33 27 12 0.18 172 0 0 -33 38 12 2 58 48.3 40 88 49 -33 40 54 -33 35 30 -33 43 14 -33 33 11 0.18 173 0 0 -33 43 49 2 58 51.4 40 87 49 -33 46 31 -33 41 6 -33 48 50 -33 38 47 0.18 174 0 0 -33 49 3 2 58 54.6 41 87 48 -33 51 45 -33 46 21 -33 54 4 -33 44 2 0.18 175 0 0 -33 53 55 2 58 57.8 42 86 47 -33 56 37 -33 51 13 -33 58 56 -33 48 54 0.18 176 0 0 -33 58 25 2 59 1.0 43 85 46 -34 1 6 -33 55 43 -34 3 25 -33 53 24 0.18 177 0 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53 0.20 - 72 0 0 - 5 43 27 3 7 26.5 27 251 -60 - 5 46 24 - 5 40 30 - 5 48 56 - 5 37 58 0.20 - 71 0 0 - 5 16 38 3 7 29.3 26 251 -61 - 5 19 35 - 5 13 41 - 5 22 7 - 5 11 9 0.20 - 70 0 0 - 4 49 57 3 7 31.9 25 251 -62 - 4 52 54 - 4 47 0 - 4 55 26 - 4 44 28 0.20 - 69 0 0 - 4 23 24 3 7 34.5 23 251 -63 - 4 26 21 - 4 20 28 - 4 28 53 - 4 17 56 0.20 - 68 0 0 - 3 57 1 3 7 36.9 22 251 -64 - 3 59 57 - 3 54 4 - 4 2 29 - 3 51 32 0.20 - 67 0 0 - 3 30 46 3 7 39.2 21 251 -65 - 3 33 43 - 3 27 50 - 3 36 14 - 3 25 19 0.20 - 66 0 0 - 3 4 42 3 7 41.4 20 251 -66 - 3 7 39 - 3 1 46 - 3 10 10 - 2 59 15 0.20 - 65 0 0 - 2 38 49 3 7 43.5 19 251 -67 - 2 41 45 - 2 35 53 - 2 44 16 - 2 33 22 0.20 - 64 0 0 - 2 13 7 3 7 45.4 18 251 -68 - 2 16 3 - 2 10 12 - 2 18 34 - 2 7 41 0.20 - 63 0 0 - 1 47 38 3 7 47.3 17 250 -69 - 1 50 33 - 1 44 42 - 1 53 4 - 1 42 12 0.20 - 62 0 0 - 1 22 21 3 7 49.0 16 250 -69 - 1 25 16 - 1 19 26 - 1 27 47 - 1 16 55 0.20 - 61 0 0 - 0 57 17 3 7 50.6 15 250 -70 - 1 0 13 - 0 54 22 - 1 2 43 - 0 51 52 0.20 - 60 0 0 - 0 32 28 3 7 52.1 14 250 -71 - 0 35 22 - 0 29 33 - 0 37 53 - 0 27 3 0.21 - 59 0 0 - 0 7 52 3 7 53.5 13 250 -72 - 0 10 47 - 0 4 58 - 0 13 17 - 0 2 28 0.21 - 58 0 0 0 16 28 3 7 54.8 11 250 -73 0 13 34 0 19 23 0 11 4 0 21 52 0.21 - 57 0 0 0 40 33 3 7 56.0 10 250 -74 0 37 39 0 43 27 0 35 10 0 45 57 0.21 - 56 0 0 1 4 22 3 7 57.0 9 250 -74 1 1 29 1 7 16 0 58 59 1 9 45 0.21 - 55 0 0 1 27 55 3 7 57.9 8 250 -75 1 25 2 1 30 49 1 22 33 1 33 18 0.22 - 54 0 0 1 51 11 3 7 58.8 7 250 -75 1 48 18 1 54 4 1 45 49 1 56 33 0.22 - 53 0 0 2 14 10 3 7 59.5 6 250 -76 2 11 17 2 17 3 2 8 48 2 19 31 0.23 - 52 0 0 2 36 50 3 8 0.0 5 250 -76 2 33 58 2 39 43 2 31 29 2 42 11 0.23 - 51 0 0 2 59 13 3 8 0.5 4 251 -77 2 56 20 3 2 5 2 53 52 3 4 33 0.24 - 50 0 0 3 21 17 3 8 0.9 3 251 -77 3 18 25 3 24 9 3 15 57 3 26 37 0.26 - 49 0 0 3 43 2 3 8 1.1 2 251 -77 3 40 10 3 45 54 3 37 43 3 48 21 0.31 - 48 0 0 4 4 28 3 8 1.3 1 251 -78 4 1 36 4 7 19 3 59 9 4 9 47 0.47 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 354-189146 * constellation : Capricornus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 21 06 49.5027 DE: -19 17 27.165 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 21 06 49.5026 DE: -19 17 27.165 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.1 * B mag [mag]: 11.7 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (9037) 1990 UJ2 asteroid class: approx. diameter [km]: 10 approx. diameter ["]: 0.007 distance from Earth [AU]: 1.85050 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#42 date of fit: 2023 Apr 25 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", 0.003", 80.268° remarks: * orbital elements for (9037)1990 UJ2 : Mean anomaly = 350.1097156494 deg Arg. of pericenter = 224.5089080939 deg Long. of node = 132.9550290337 deg Inclination = 4.7974008761 deg Eccentricity = 0.2158371584 Semimajor axis = 2.6516826923 AU Perihelion dist = 2.0793510350 AU Mag: H = 13.82, G = 0.15 Epoch of elements : MJD 60620.12693375 TDT (2024 Nov 06.1269) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#422023Apr25,0.49,2024,11,6,3.046414,0.044710,-0.170965,10.908870,2.868373,0.005261,0.001603,0.000000,0.000000 -134.4665,-19.1921,130.21,-16.10,False UCAC4 354-189146,21.11375077,-19.2908791,11.66,11.06,10.74,0.1,0,,21.13716235,-19.1921194,6.94,6.82,0,0,0 9037,1990 UJ2,18.00,9.769,1.8505,0,0,3.660,13.64,,1.0,0 0,350.0807,2024,11,6,224.5089,132.9550,4.7974,0.21584,2.65168,2.07935,13.81,5.0,0.15 1.429,0.0183,0.0027,80,0.0031,Known errors,1.10,0,-1,-1 20241106_189146,60140.68 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:25 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org