IOTA/IOTA-ES occultation update for (4828) Misenus / UCAC4-342-198086 event on 2023 Jul 20, 12:08 UT Visible from New Zealand, Australia Summary ------- On 2023 Jul 20 UT, the 44.5 km diameter asteroid (4828) Misenus will occult a 12.4 mag star in the constellation Aquarius 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 5.49 mag to 17.88 mag (the magnitude of the asteroid) for at most 3.310 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: 88 * date and approx. time of event: 2023 Jul 20, 12:01 - 2023 Jul 20, 12:17 * geocentric midpoint of event [JD]: 2460146.00639966 * magnitude of target star: 12.40 * magnitude drop [mag]: 5.49 * estimated maximum duration [s]: 3.310 * Moon: 7 % sunlit, 175° distance * Sun: 149° distance * rough path description: New Zealand, Australia The occultation path -------------------- * approximate projected width [km]: 45 * 1 sigma uncertainty interval [path widths]: +/- 0.56 * 1 sigma uncertainty interval [seconds]: +/- 5.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.020, +/- 0.014) * 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.005", 56°) * approx speed of asteroid's shadow [km/s]: 13.4338 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4-342-198086 by 4828 Misenus on 2023 Jul 20 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 -27 28 44 12 16 58.9 0 114 -28 -27 15 18 -27 42 11 -27 0 22 -27 57 9 .... 110 0 0 -27 52 44 12 16 58.7 1 114 -29 -27 39 20 -28 6 8 -27 24 25 -28 21 5 0.21 111 0 0 -28 16 19 12 16 58.4 2 113 -30 -28 2 57 -28 29 42 -27 48 4 -28 44 36 0.20 112 0 0 -28 39 29 12 16 58.0 3 113 -31 -28 26 8 -28 52 50 -28 11 18 -29 7 42 0.19 113 0 0 -29 2 13 12 16 57.5 4 112 -32 -28 48 55 -29 15 32 -28 34 6 -29 30 23 0.19 114 0 0 -29 24 33 12 16 56.8 5 112 -33 -29 11 16 -29 37 50 -28 56 30 -29 52 39 0.19 115 0 0 -29 46 27 12 16 56.0 6 111 -33 -29 33 12 -29 59 42 -29 18 28 -30 14 29 0.19 116 0 0 -30 7 56 12 16 55.1 7 111 -34 -29 54 43 -30 21 9 -29 40 0 -30 35 53 0.19 117 0 0 -30 28 59 12 16 54.0 8 110 -35 -30 15 48 -30 42 10 -30 1 7 -30 56 52 0.18 118 0 0 -30 49 36 12 16 52.9 9 110 -36 -30 36 27 -31 2 46 -30 21 49 -31 17 26 0.18 119 0 0 -31 9 48 12 16 51.6 10 109 -37 -30 56 40 -31 22 56 -30 42 4 -31 37 34 0.18 120 0 0 -31 29 34 12 16 50.2 11 109 -38 -31 16 28 -31 42 40 -31 1 54 -31 57 16 0.18 121 0 0 -31 48 54 12 16 48.7 12 108 -39 -31 35 50 -32 1 58 -31 21 18 -32 16 32 0.18 122 0 0 -32 7 49 12 16 47.1 13 108 -40 -31 54 47 -32 20 51 -31 40 17 -32 35 23 0.18 123 0 0 -32 26 17 12 16 45.4 14 107 -40 -32 13 17 -32 39 18 -31 58 49 -32 53 48 0.18 124 0 0 -32 44 21 12 16 43.5 14 107 -41 -32 31 22 -32 57 19 -32 16 56 -33 11 47 0.18 125 0 0 -33 1 58 12 16 41.6 15 106 -42 -32 49 1 -33 14 55 -32 34 37 -33 29 21 0.18 126 0 0 -33 19 10 12 16 39.6 16 106 -43 -33 6 15 -33 32 5 -32 51 53 -33 46 29 0.18 127 0 0 -33 35 56 12 16 37.5 17 105 -44 -33 23 3 -33 48 49 -33 8 42 -34 3 12 0.18 128 0 0 -33 52 16 12 16 35.3 18 104 -45 -33 39 25 -34 5 8 -33 25 7 -34 19 29 0.18 129 0 0 -34 8 11 12 16 33.0 19 104 -45 -33 55 22 -34 21 2 -33 41 5 -34 35 20 0.18 130 0 0 -34 23 41 12 16 30.6 20 103 -46 -34 10 53 -34 36 30 -33 56 38 -34 50 46 0.18 131 0 0 -34 38 45 12 16 28.1 20 103 -47 -34 25 59 -34 51 32 -34 11 46 -35 5 47 0.18 132 0 0 -34 53 24 12 16 25.6 21 102 -48 -34 40 39 -35 6 10 -34 26 28 -35 20 23 0.18 133 0 0 -35 7 38 12 16 22.9 22 102 -48 -34 54 54 -35 20 22 -34 40 45 -35 34 33 0.18 134 0 0 -35 21 26 12 16 20.2 23 101 -49 -35 8 44 -35 34 9 -34 54 37 -35 48 18 0.18 135 0 0 -35 34 50 12 16 17.4 24 100 -50 -35 22 9 -35 47 31 -35 8 3 -36 1 39 0.18 136 0 0 -35 47 48 12 16 14.5 25 100 -51 -35 35 9 -36 0 28 -35 21 5 -36 14 34 0.18 137 0 0 -36 0 22 12 16 11.5 25 99 -51 -35 47 44 -36 13 0 -35 33 41 -36 27 5 0.18 138 0 0 -36 12 31 12 16 8.5 26 99 -52 -35 59 55 -36 25 7 -35 45 53 -36 39 11 0.18 139 0 0 -36 24 15 12 16 5.4 27 98 -53 -36 11 40 -36 36 50 -35 57 40 -36 50 52 0.19 140 0 0 -36 35 35 12 16 2.2 28 97 -54 -36 23 1 -36 48 9 -36 9 3 -37 2 9 0.19 141 0 0 -36 46 30 12 15 58.9 29 97 -54 -36 33 58 -36 59 2 -36 20 0 -37 13 1 0.19 142 0 0 -36 57 0 12 15 55.6 30 96 -55 -36 44 29 -37 9 32 -36 30 34 -37 23 29 0.19 143 0 0 -37 7 7 12 15 52.2 30 95 -56 -36 54 37 -37 19 37 -36 40 43 -37 33 33 0.19 144 0 0 -37 16 49 12 15 48.7 31 95 -56 -37 4 21 -37 29 18 -36 50 27 -37 43 13 0.19 145 0 0 -37 26 7 12 15 45.2 32 94 -57 -37 13 40 -37 38 35 -36 59 48 -37 52 29 0.19 146 0 0 -37 35 1 12 15 41.6 33 93 -58 -37 22 35 -37 47 28 -37 8 44 -38 1 21 0.19 147 0 0 -37 43 32 12 15 37.9 33 93 -58 -37 31 6 -37 55 58 -37 17 17 -38 9 49 0.19 148 0 0 -37 51 38 12 15 34.2 34 92 -59 -37 39 14 -38 4 3 -37 25 25 -38 17 53 0.19 149 0 0 -37 59 21 12 15 30.4 35 91 -60 -37 46 57 -38 11 45 -37 33 10 -38 25 34 0.19 150 0 0 -38 6 40 12 15 26.6 36 91 -60 -37 54 17 -38 19 3 -37 40 31 -38 32 51 0.19 151 0 0 -38 13 35 12 15 22.6 37 90 -61 -38 1 14 -38 25 58 -37 47 28 -38 39 45 0.19 152 0 0 -38 20 7 12 15 18.7 37 89 -62 -38 7 46 -38 32 29 -37 54 2 -38 46 15 0.19 153 0 0 -38 26 16 12 15 14.6 38 89 -62 -38 13 56 -38 38 37 -38 0 12 -38 52 22 0.19 154 0 0 -38 32 1 12 15 10.6 39 88 -63 -38 19 42 -38 44 22 -38 5 59 -38 58 6 0.19 155 0 0 -38 37 24 12 15 6.4 40 87 -63 -38 25 5 -38 49 43 -38 11 22 -39 3 27 0.19 156 0 0 -38 42 22 12 15 2.2 40 87 -64 -38 30 4 -38 54 41 -38 16 22 -39 8 25 0.19 157 0 0 -38 46 58 12 14 58.0 41 86 -64 -38 34 41 -38 59 17 -38 20 59 -39 12 59 0.19 158 0 0 -38 51 11 12 14 53.6 42 85 -65 -38 38 54 -39 3 29 -38 25 13 -39 17 11 0.19 159 0 0 -38 55 1 12 14 49.3 43 84 -66 -38 42 44 -39 7 18 -38 29 4 -39 21 0 0.19 160 0 0 -38 58 28 12 14 44.8 43 84 -66 -38 46 11 -39 10 45 -38 32 32 -39 24 26 0.19 161 0 0 -39 1 32 12 14 40.4 44 83 -67 -38 49 16 -39 13 48 -38 35 37 -39 27 29 0.19 162 0 0 -39 4 13 12 14 35.8 45 82 -67 -38 51 57 -39 16 29 -38 38 19 -39 30 10 0.19 163 0 0 -39 6 32 12 14 31.2 46 81 -67 -38 54 16 -39 18 47 -38 40 38 -39 32 28 0.19 164 0 0 -39 8 27 12 14 26.6 46 81 -68 -38 56 12 -39 20 43 -38 42 34 -39 34 23 0.19 165 0 0 -39 10 0 12 14 21.9 47 80 -68 -38 57 45 -39 22 16 -38 44 7 -39 35 55 0.19 166 0 0 -39 11 11 12 14 17.2 48 79 -69 -38 58 56 -39 23 26 -38 45 18 -39 37 5 0.19 167 0 0 -39 11 58 12 14 12.4 49 78 -69 -38 59 44 -39 24 14 -38 46 6 -39 37 53 0.19 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-10 -10 39 11 -11 7 0 -10 23 43 -11 22 30 0.18 - 95 0 0 -10 21 22 12 3 18.0 40 250 -9 -10 7 28 -10 35 17 - 9 52 1 -10 50 47 0.18 - 94 0 0 - 9 49 37 12 3 12.1 39 250 -8 - 9 35 44 -10 3 32 - 9 20 16 -10 19 2 0.18 - 93 0 0 - 9 17 52 12 3 6.4 37 250 -7 - 9 3 59 - 9 31 46 - 8 48 32 - 9 47 16 0.18 - 92 0 0 - 8 46 7 12 3 0.9 36 250 -6 - 8 32 14 - 9 0 1 - 8 16 47 - 9 15 30 0.18 - 91 0 0 - 8 14 23 12 2 55.4 35 249 -5 - 8 0 31 - 8 28 16 - 7 45 4 - 8 43 45 0.18 - 90 0 0 - 7 42 41 12 2 50.2 34 249 -4 - 7 28 49 - 7 56 34 - 7 13 23 - 8 12 2 0.18 - 89 0 0 - 7 11 2 12 2 45.0 33 249 -2 - 6 57 10 - 7 24 54 - 6 41 45 - 7 40 21 0.18 - 88 0 0 - 6 39 26 12 2 40.0 32 249 -1 - 6 25 35 - 6 53 18 - 6 10 11 - 7 8 44 0.18 - 87 0 0 - 6 7 55 12 2 35.1 31 248 0 - 5 54 5 - 6 21 46 - 5 38 41 - 6 37 12 0.18 - 86 0 0 - 5 36 29 12 2 30.4 30 248 1 - 5 22 40 - 5 50 19 - 5 7 17 - 6 5 45 0.18 - 85 0 0 - 5 5 10 12 2 25.9 29 248 2 - 4 51 21 - 5 18 59 - 4 35 59 - 5 34 24 0.18 - 84 0 0 - 4 33 57 12 2 21.5 28 248 3 - 4 20 10 - 4 47 46 - 4 4 48 - 5 3 9 0.19 - 83 0 0 - 4 2 53 12 2 17.2 26 248 4 - 3 49 6 - 4 16 41 - 3 33 46 - 4 32 3 0.19 - 82 0 0 - 3 31 57 12 2 13.1 25 248 5 - 3 18 11 - 3 45 44 - 3 2 52 - 4 1 5 0.19 - 81 0 0 - 3 1 11 12 2 9.2 24 248 6 - 2 47 26 - 3 14 57 - 2 32 8 - 3 30 17 0.19 - 80 0 0 - 2 30 36 12 2 5.5 23 248 7 - 2 16 52 - 2 44 20 - 2 1 35 - 2 59 39 0.19 - 79 0 0 - 2 0 11 12 2 1.9 22 247 9 - 1 46 28 - 2 13 54 - 1 31 13 - 2 29 12 0.19 - 78 0 0 - 1 29 59 12 1 58.5 21 247 10 - 1 16 17 - 1 43 41 - 1 1 3 - 1 58 57 0.19 - 77 0 0 - 0 59 59 12 1 55.2 20 247 11 - 0 46 19 - 1 13 40 - 0 31 6 - 1 28 55 0.19 - 76 0 0 - 0 30 13 12 1 52.1 19 247 12 - 0 16 34 - 0 43 53 - 0 1 22 - 0 59 6 0.19 - 75 0 0 - 0 0 41 12 1 49.2 18 247 13 0 12 57 - 0 14 20 0 28 7 - 0 29 32 0.19 - 74 0 0 0 28 36 12 1 46.5 17 247 14 0 42 12 0 14 59 0 57 20 - 0 0 12 0.19 - 73 0 0 0 57 37 12 1 43.9 15 247 15 1 11 12 0 44 1 1 26 18 0 28 52 0.19 - 72 0 0 1 26 21 12 1 41.6 14 247 16 1 39 55 1 12 47 1 55 0 0 57 40 0.19 - 71 0 0 1 54 49 12 1 39.4 13 247 17 2 8 21 1 41 16 2 23 24 1 26 10 0.19 - 70 0 0 2 22 58 12 1 37.3 12 247 18 2 36 29 2 9 27 2 51 31 1 54 23 0.20 - 69 0 0 2 50 49 12 1 35.5 11 247 19 3 4 18 2 37 20 3 19 19 2 22 17 0.20 - 68 0 0 3 18 22 12 1 33.8 10 247 21 3 31 49 3 4 54 3 46 48 2 49 53 0.20 - 67 0 0 3 45 34 12 1 32.3 9 247 22 3 59 0 3 32 8 4 13 57 3 17 9 0.20 - 66 0 0 4 12 26 12 1 30.9 8 247 23 4 25 51 3 59 2 4 40 46 3 44 5 0.21 - 65 0 0 4 38 58 12 1 29.8 7 248 24 4 52 21 4 25 35 5 7 14 4 10 40 0.21 - 64 0 0 5 5 8 12 1 28.8 6 248 25 5 18 29 4 51 47 5 33 20 4 36 53 0.22 - 63 0 0 5 30 56 12 1 28.0 5 248 26 5 44 16 5 17 37 5 59 5 5 2 45 0.23 - 62 0 0 5 56 22 12 1 27.4 3 248 27 6 9 40 5 43 4 6 24 27 5 28 15 0.24 - 61 0 0 6 21 25 12 1 26.9 2 248 28 6 34 41 6 8 9 6 49 27 5 53 21 0.27 - 60 0 0 6 46 5 12 1 26.6 1 248 29 6 59 19 6 32 51 7 14 3 6 18 5 0.35 - 59 0 0 7 10 21 12 1 26.5 0 248 30 7 23 34 6 57 8 7 38 15 6 42 25 1.02 Uncertainty in time = +/- 6 secs Prediction of 2023 May 29.0 Data for the target star ------------------------ * name: UCAC4-342-198086 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 22 08 41.5701 DE: -21 44 26.424 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 22 08 41.5702 DE: -21 44 26.424 * 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: (4828) Misenus asteroid class: approx. diameter [km]: 45 approx. diameter ["]: 0.014 distance from Earth [AU]: 4.46440 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#44 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): 0.023", 0.005", 56.015° remarks: * orbital elements for (4828)Misenus : Mean anomaly = 200.0249071034 deg Arg. of pericenter = 128.7287096521 deg Long. of node = 352.9778336482 deg Inclination = 14.9040137084 deg Eccentricity = 0.0412155022 Semimajor axis = 5.1630359273 AU Perihelion dist = 4.9502388086 AU Mag: H = 10.54, G = 0.15 Epoch of elements : MJD 60145.50611111 TDT (2023 Jul 20.5061) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#442023Apr25,3.31,2023,7,20,12.153592,0.059507,-0.177597,-7.187637,-2.414659,-0.002944,-0.000219,0.000001,0.000001 -147.8194,-21.6241,-0.70,20.65,False UCAC4-342-198086,22.14488059,-21.7406732,0.00,12.40,0.00,0.0,0,,22.16684424,-21.6240684,5.49,0.00,0,0,0 4828,Misenus,17.88,44.5,4.4644,0,0,-1.015,-4.76,,3.4,0 0,199.9824,2023,7,20,128.7287,352.9778,14.9040,0.04122,5.16304,4.95024,10.54,5.0,0.15 1.557,0.0233,0.0047,56,0.0077,Known errors,-1.00,-1,-1,-1 20230720_198086,60092.98 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 May 28, 23:38 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org