IOTA/IOTA-ES occultation update for (1492) Oppolzer / UCAC4 553-043180 event on 2024 May 26, 11:25 UT Visible from Summary ------- On 2024 May 26 UT, the 12.34 km diameter asteroid (1492) Oppolzer will occult a 11.8 mag star in the constellation Cancer for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.87 mag to 17.68 mag (the magnitude of the asteroid) for at most 0.360 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 May 26, 11:23 - 2024 May 26, 11:28 * geocentric midpoint of event [JD]: 2460456.97612250 * magnitude of target star: 11.81 * magnitude drop [mag]: 5.87 * estimated maximum duration [s]: 0.360 * Moon: 91 % sunlit, 159° distance * Sun: 56° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 15 * 1 sigma uncertainty interval [path widths]: +/- 0.23 * 1 sigma uncertainty interval [seconds]: +/- 0.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.009, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.009", 0.002", 97°) * approx speed of asteroid's shadow [km/s]: 34.5023 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 553-043180 by 1492 Oppolzer on 2024 May 26 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 - 12 0 0 -22 54 24 11 23 3.9 0 68 42 -22 58 45 -22 50 3 -23 0 43 -22 48 5 .... - 11 0 0 -22 31 48 11 23 4.0 1 67 42 -22 36 9 -22 27 28 -22 38 7 -22 25 31 0.31 - 10 0 0 -22 9 29 11 23 4.1 2 67 43 -22 13 49 -22 5 9 -22 15 47 -22 3 12 0.46 - 9 0 0 -21 47 26 11 23 4.3 3 66 44 -21 51 45 -21 43 6 -21 53 43 -21 41 9 0.52 - 8 0 0 -21 25 40 11 23 4.5 4 66 44 -21 29 59 -21 21 21 -21 31 56 -21 19 24 0.56 - 7 0 0 -21 4 11 11 23 4.9 5 66 45 -21 8 29 -20 59 52 -21 10 26 -20 57 56 0.58 - 6 0 0 -20 43 0 11 23 5.3 6 65 46 -20 47 18 -20 38 42 -20 49 15 -20 36 46 0.59 - 5 0 0 -20 22 8 11 23 5.7 7 65 46 -20 26 25 -20 17 50 -20 28 22 -20 15 54 0.60 - 4 0 0 -20 1 34 11 23 6.3 8 65 47 -20 5 52 -19 57 18 -20 7 48 -19 55 22 0.61 - 3 0 0 -19 41 21 11 23 6.9 9 64 48 -19 45 37 -19 37 4 -19 47 33 -19 35 9 0.62 - 2 0 0 -19 21 27 11 23 7.5 10 64 48 -19 25 43 -19 17 11 -19 27 39 -19 15 16 0.62 - 1 0 0 -19 1 54 11 23 8.3 11 64 49 -19 6 9 -18 57 38 -19 8 5 -18 55 43 0.63 - 0 0 0 -18 42 41 11 23 9.1 12 63 49 -18 46 56 -18 38 26 -18 48 51 -18 36 31 0.63 1 0 0 -18 23 50 11 23 9.9 13 63 50 -18 28 4 -18 19 36 -18 29 59 -18 17 41 0.64 2 0 0 -18 5 21 11 23 10.8 14 62 50 -18 9 35 -18 1 7 -18 11 29 -17 59 12 0.64 3 0 0 -17 47 13 11 23 11.8 15 62 51 -17 51 27 -17 43 0 -17 53 21 -17 41 6 0.64 4 0 0 -17 29 29 11 23 12.9 16 62 51 -17 33 42 -17 25 16 -17 35 36 -17 23 22 0.64 5 0 0 -17 12 7 11 23 14.0 17 61 51 -17 16 19 -17 7 55 -17 18 13 -17 6 1 0.65 6 0 0 -16 55 8 11 23 15.2 18 61 52 -16 59 20 -16 50 56 -17 1 14 -16 49 3 0.65 7 0 0 -16 38 33 11 23 16.5 19 61 52 -16 42 45 -16 34 22 -16 44 39 -16 32 29 0.65 8 0 0 -16 22 22 11 23 17.8 20 60 52 -16 26 34 -16 18 12 -16 28 27 -16 16 18 0.65 9 0 0 -16 6 36 11 23 19.2 21 60 53 -16 10 47 -16 2 25 -16 12 40 -16 0 32 0.65 10 0 0 -15 51 14 11 23 20.6 22 60 53 -15 55 24 -15 47 4 -15 57 17 -15 45 11 0.65 11 0 0 -15 36 17 11 23 22.1 23 59 53 -15 40 26 -15 32 7 -15 42 19 -15 30 14 0.65 12 0 0 -15 21 45 11 23 23.6 24 59 53 -15 25 54 -15 17 35 -15 27 47 -15 15 43 0.65 13 0 0 -15 7 38 11 23 25.3 25 58 53 -15 11 47 -15 3 29 -15 13 39 -15 1 37 0.66 14 0 0 -14 53 57 11 23 26.9 26 58 54 -14 58 6 -14 49 49 -14 59 58 -14 47 57 0.66 15 0 0 -14 40 42 11 23 28.6 27 58 54 -14 44 51 -14 36 35 -14 46 43 -14 34 43 0.66 16 0 0 -14 27 54 11 23 30.4 28 57 54 -14 32 2 -14 23 46 -14 33 54 -14 21 55 0.66 17 0 0 -14 15 32 11 23 32.3 29 57 54 -14 19 39 -14 11 25 -14 21 31 -14 9 33 0.66 18 0 0 -14 3 36 11 23 34.2 30 56 54 -14 7 43 -13 59 30 -14 9 35 -13 57 38 0.66 19 0 0 -13 52 8 11 23 36.1 31 56 53 -13 56 14 -13 48 1 -13 58 6 -13 46 10 0.66 20 0 0 -13 41 6 11 23 38.1 32 55 53 -13 45 13 -13 37 0 -13 47 4 -13 35 9 0.66 21 0 0 -13 30 32 11 23 40.2 32 55 53 -13 34 38 -13 26 26 -13 36 29 -13 24 35 0.66 22 0 0 -13 20 25 11 23 42.3 33 54 53 -13 24 31 -13 16 20 -13 26 22 -13 14 29 0.66 23 0 0 -13 10 46 11 23 44.4 34 54 53 -13 14 51 -13 6 41 -13 16 42 -13 4 50 0.66 24 0 0 -13 1 34 11 23 46.6 35 53 52 -13 5 39 -12 57 29 -13 7 30 -12 55 39 0.66 25 0 0 -12 52 51 11 23 48.9 36 53 52 -12 56 56 -12 48 46 -12 58 46 -12 46 56 0.66 26 0 0 -12 44 35 11 23 51.2 37 52 52 -12 48 40 -12 40 31 -12 50 30 -12 38 40 0.67 27 0 0 -12 36 48 11 23 53.5 38 51 52 -12 40 52 -12 32 43 -12 42 42 -12 30 53 0.67 28 0 0 -12 29 28 11 23 55.9 38 51 51 -12 33 33 -12 25 25 -12 35 23 -12 23 35 0.67 29 0 0 -12 22 38 11 23 58.3 39 50 51 -12 26 42 -12 18 34 -12 28 32 -12 16 44 0.67 30 0 0 -12 16 15 11 24 0.8 40 49 50 -12 20 19 -12 12 12 -12 22 9 -12 10 22 0.67 31 0 0 -12 10 22 11 24 3.3 41 49 50 -12 14 25 -12 6 19 -12 16 15 -12 4 29 0.67 32 0 0 -12 4 57 11 24 5.8 42 48 49 -12 9 0 -12 0 54 -12 10 50 -11 59 4 0.67 33 0 0 -12 0 1 11 24 8.4 43 47 49 -12 4 4 -11 55 58 -12 5 54 -11 54 8 0.67 34 0 0 -11 55 34 11 24 11.1 43 46 48 -11 59 37 -11 51 31 -12 1 26 -11 49 41 0.67 35 0 0 -11 51 35 11 24 13.7 44 46 48 -11 55 38 -11 47 33 -11 57 28 -11 45 43 0.67 36 0 0 -11 48 6 11 24 16.4 45 45 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43 -23 11 58 -23 22 41 -23 10 0 0.67 99 0 0 -23 39 39 11 27 24.2 36 322 -10 -23 44 2 -23 35 16 -23 46 0 -23 33 18 0.67 100 0 0 -24 3 12 11 27 26.4 35 322 -11 -24 7 35 -23 58 49 -24 9 34 -23 56 50 0.67 101 0 0 -24 26 58 11 27 28.7 35 321 -12 -24 31 22 -24 22 35 -24 33 21 -24 20 36 0.67 102 0 0 -24 50 58 11 27 30.9 34 320 -13 -24 55 23 -24 46 34 -24 57 22 -24 44 35 0.67 103 0 0 -25 15 10 11 27 33.0 33 320 -14 -25 19 35 -25 10 46 -25 21 35 -25 8 47 0.67 104 0 0 -25 39 34 11 27 35.1 32 319 -15 -25 44 0 -25 35 9 -25 45 59 -25 33 10 0.67 105 0 0 -26 4 9 11 27 37.1 31 318 -16 -26 8 35 -25 59 44 -26 10 35 -25 57 44 0.67 106 0 0 -26 28 55 11 27 39.0 30 317 -17 -26 33 21 -26 24 29 -26 35 21 -26 22 29 0.68 107 0 0 -26 53 50 11 27 40.9 29 317 -18 -26 58 17 -26 49 24 -27 0 17 -26 47 23 0.68 108 0 0 -27 18 54 11 27 42.8 28 316 -19 -27 23 21 -27 14 27 -27 25 22 -27 12 27 0.68 109 0 0 -27 44 6 11 27 44.6 27 315 -20 -27 48 34 -27 39 39 -27 50 35 -27 37 38 0.68 110 0 0 -28 9 26 11 27 46.3 26 315 -21 -28 13 54 -28 4 58 -28 15 55 -28 2 58 0.68 111 0 0 -28 34 52 11 27 48.0 25 314 -21 -28 39 21 -28 30 24 -28 41 22 -28 28 23 0.68 112 0 0 -29 0 25 11 27 49.6 25 314 -22 -29 4 54 -28 55 56 -29 6 55 -28 53 55 0.68 113 0 0 -29 26 3 11 27 51.1 24 313 -23 -29 30 32 -29 21 34 -29 32 33 -29 19 33 0.68 114 0 0 -29 51 45 11 27 52.6 23 312 -24 -29 56 14 -29 47 16 -29 58 16 -29 45 14 0.68 115 0 0 -30 17 31 11 27 54.0 22 312 -25 -30 22 0 -30 13 1 -30 24 2 -30 11 0 0.68 116 0 0 -30 43 20 11 27 55.4 21 311 -26 -30 47 50 -30 38 50 -30 49 52 -30 36 48 0.68 117 0 0 -31 9 11 11 27 56.7 20 311 -27 -31 13 41 -31 4 41 -31 15 43 -31 2 39 0.68 118 0 0 -31 35 4 11 27 57.9 19 310 -28 -31 39 34 -31 30 34 -31 41 37 -31 28 32 0.68 119 0 0 -32 0 57 11 27 59.1 18 309 -29 -32 5 28 -31 56 27 -32 7 31 -31 54 25 0.68 120 0 0 -32 26 51 11 28 0.2 17 309 -30 -32 31 22 -32 22 20 -32 33 25 -32 20 18 0.68 121 0 0 -32 52 44 11 28 1.3 16 308 -31 -32 57 15 -32 48 13 -32 59 18 -32 46 11 0.68 122 0 0 -33 18 36 11 28 2.3 15 308 -32 -33 23 7 -33 14 4 -33 25 10 -33 12 2 0.68 123 0 0 -33 44 25 11 28 3.2 14 307 -32 -33 48 57 -33 39 54 -33 50 59 -33 37 51 0.68 124 0 0 -34 10 11 11 28 4.0 13 306 -33 -34 14 43 -34 5 40 -34 16 46 -34 3 37 0.68 125 0 0 -34 35 54 11 28 4.8 12 306 -34 -34 40 26 -34 31 23 -34 42 29 -34 29 20 0.68 126 0 0 -35 1 33 11 28 5.6 11 305 -35 -35 6 5 -34 57 1 -35 8 8 -34 54 59 0.68 127 0 0 -35 27 7 11 28 6.3 11 305 -36 -35 31 39 -35 22 35 -35 33 42 -35 20 32 0.68 128 0 0 -35 52 35 11 28 6.9 10 304 -37 -35 57 7 -35 48 3 -35 59 10 -35 46 0 0.68 129 0 0 -36 17 56 11 28 7.5 9 303 -38 -36 22 28 -36 13 24 -36 24 31 -36 11 21 0.68 130 0 0 -36 43 11 11 28 8.0 8 303 -38 -36 47 43 -36 38 39 -36 49 46 -36 36 36 0.68 131 0 0 -37 8 18 11 28 8.4 7 302 -39 -37 12 50 -37 3 46 -37 14 53 -37 1 43 0.69 132 0 0 -37 33 17 11 28 8.8 6 302 -40 -37 37 49 -37 28 45 -37 39 52 -37 26 42 0.69 133 0 0 -37 58 7 11 28 9.1 5 301 -41 -38 2 39 -37 53 35 -38 4 42 -37 51 32 0.69 134 0 0 -38 22 47 11 28 9.4 4 300 -41 -38 27 19 -38 18 15 -38 29 22 -38 16 13 0.70 135 0 0 -38 47 18 11 28 9.6 3 300 -42 -38 51 50 -38 42 46 -38 53 53 -38 40 43 0.70 136 0 0 -39 11 38 11 28 9.8 3 299 -43 -39 16 10 -39 7 6 -39 18 13 -39 5 3 0.71 137 0 0 -39 35 47 11 28 9.9 2 298 -44 -39 40 19 -39 31 15 -39 42 21 -39 29 13 0.74 138 0 0 -39 59 44 11 28 10.0 1 298 -44 -40 4 16 -39 55 12 -40 6 18 -39 53 10 0.81 Uncertainty in time = +/- 0 secs Prediction of 2023 Jul 14.4 Data for the target star ------------------------ * name: UCAC4 553-043180 * constellation : Cancer * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 08 13 52.2968 DE: +20 31 58.419 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 08 13 52.2967 DE: +20 31 58.420 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.8 * B mag [mag]: 12.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1492) Oppolzer asteroid class: approx. diameter [km]: 12 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.47390 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 date of fit: 2023 Feb 11 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): 0.009", 0.002", 97.2° remarks: * orbital elements for (1492)Oppolzer : Mean anomaly = 297.7980487719 deg Arg. of pericenter = 81.9793708337 deg Long. of node = 137.7059776178 deg Inclination = 6.0560802085 deg Eccentricity = 0.1168116689 Semimajor axis = 2.1726757139 AU Perihelion dist = 1.9188818377 AU Mag: H = 13.01, G = 0.15 Epoch of elements : MJD 60456.47612263 TDT (2024 May 26.4761) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Feb11,0.36,2024,5,26,11.426940,-0.092246,-0.551433,19.209563,-3.198533,0.004179,-0.000913,-0.000001,0.000000 67.8894,20.4606,7.88,21.26,False UCAC4 553-043180,8.23119361,20.5328941,12.11,11.81,11.65,0.0,0,,8.25457996,20.4605995,5.88,5.59,0,0,0 1492,Oppolzer,17.68,12.340,2.4739,0,0,4.860,-11.38,,2.2,0 0,297.6515,2024,5,26,81.9794,137.7060,6.0561,0.11681,2.17268,1.91888,13.01,5.0,0.15 1.226,0.0087,0.0015,97,0.0016,Known errors,0.94,0,-1,-1 20240526_043180,60139.36 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 08:35 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org