IOTA/IOTA-ES occultation update for (1492) Oppolzer / UCAC4 536-029978 event on 2024 Jan 10, 02:55 UT Visible from Summary ------- On 2024 Jan 10 UT, the 12.344 km diameter asteroid (1492) Oppolzer will occult a 11.8 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.00 mag to 15.78 mag (the magnitude of the asteroid) for at most 1.120 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: 94 * date and approx. time of event: 2024 Jan 10, 02:46 - 2024 Jan 10, 03:04 * geocentric midpoint of event [JD]: 2460319.62173196 * magnitude of target star: 11.81 * magnitude drop [mag]: 4.00 * estimated maximum duration [s]: 1.120 * Moon: 3 % sunlit, 167° distance * Sun: 168° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 14 * 1 sigma uncertainty interval [path widths]: +/- 0.46 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.004", 90°) * approx speed of asteroid's shadow [km/s]: 10.9890 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 536-029978 by 1492 Oppolzer on 2024 Jan 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 -142 0 0 -10 38 37 3 4 1.9 1 72 11 -10 34 43 -10 42 32 -10 31 8 -10 46 7 .... -141 0 0 -10 20 26 3 4 1.7 2 72 10 -10 16 33 -10 24 20 -10 12 58 -10 27 55 0.29 -140 0 0 -10 2 36 3 4 1.2 3 72 9 - 9 58 43 -10 6 29 - 9 55 9 -10 10 4 0.36 -139 0 0 - 9 45 7 3 4 0.5 4 72 8 - 9 41 14 - 9 49 0 - 9 37 40 - 9 52 34 0.39 -138 0 0 - 9 27 59 3 3 59.7 5 72 7 - 9 24 7 - 9 31 51 - 9 20 33 - 9 35 25 0.41 -137 0 0 - 9 11 13 3 3 58.6 6 72 6 - 9 7 21 - 9 15 5 - 9 3 48 - 9 18 38 0.43 -136 0 0 - 8 54 49 3 3 57.3 7 71 5 - 8 50 57 - 8 58 40 - 8 47 25 - 9 2 14 0.44 -135 0 0 - 8 38 47 3 3 55.8 8 71 4 - 8 34 56 - 8 42 38 - 8 31 23 - 8 46 11 0.44 -134 0 0 - 8 23 7 3 3 54.2 9 71 3 - 8 19 16 - 8 26 58 - 8 15 44 - 8 30 30 0.45 -133 0 0 - 8 7 50 3 3 52.3 10 71 2 - 8 4 0 - 8 11 41 - 8 0 28 - 8 15 13 0.45 -132 0 0 - 7 52 56 3 3 50.2 11 71 1 - 7 49 6 - 7 56 46 - 7 45 35 - 8 0 18 0.45 -131 0 0 - 7 38 24 3 3 48.0 12 71 0 - 7 34 35 - 7 42 14 - 7 31 4 - 7 45 45 0.46 -130 0 0 - 7 24 16 3 3 45.5 13 70 -1 - 7 20 27 - 7 28 6 - 7 16 56 - 7 31 36 0.46 -129 0 0 - 7 10 31 3 3 42.9 14 70 -2 - 7 6 42 - 7 14 20 - 7 3 12 - 7 17 51 0.46 -128 0 0 - 6 57 9 3 3 40.1 15 70 -3 - 6 53 21 - 7 0 58 - 6 49 51 - 7 4 28 0.46 -127 0 0 - 6 44 11 3 3 37.1 16 70 -4 - 6 40 23 - 6 48 0 - 6 36 54 - 6 51 30 0.46 -126 0 0 - 6 31 37 3 3 33.9 17 70 -5 - 6 27 49 - 6 35 25 - 6 24 20 - 6 38 55 0.47 -125 0 0 - 6 19 26 3 3 30.5 18 70 -6 - 6 15 39 - 6 23 14 - 6 12 10 - 6 26 43 0.47 -124 0 0 - 6 7 40 3 3 27.0 19 70 -7 - 6 3 52 - 6 11 27 - 6 0 24 - 6 14 56 0.47 -123 0 0 - 5 56 17 3 3 23.3 20 69 -8 - 5 52 30 - 6 0 4 - 5 49 2 - 6 3 33 0.47 -122 0 0 - 5 45 18 3 3 19.4 21 69 -9 - 5 41 32 - 5 49 5 - 5 38 4 - 5 52 34 0.47 -121 0 0 - 5 34 44 3 3 15.3 22 69 -10 - 5 30 58 - 5 38 30 - 5 27 30 - 5 41 59 0.47 -120 0 0 - 5 24 34 3 3 11.1 23 69 -11 - 5 20 48 - 5 28 20 - 5 17 20 - 5 31 48 0.47 -119 0 0 - 5 14 48 3 3 6.7 24 69 -12 - 5 11 2 - 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1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.019", 0.004", 89.546° remarks: * orbital elements for (1492)Oppolzer : Mean anomaly = 255.5414902325 deg Arg. of pericenter = 81.9566687458 deg Long. of node = 137.7068168648 deg Inclination = 6.0558950404 deg Eccentricity = 0.1167425578 Semimajor axis = 2.1727622868 AU Perihelion dist = 1.9191084600 AU Mag: H = 13.01, G = 0.15 Epoch of elements : MJD 60319.12173237 TDT (2024 Jan 10.1217) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Feb11,1.12,2024,1,10,2.921567,-0.104111,-0.415707,-6.016691,1.506747,0.001091,0.000533,0.000002,0.000000 -53.9529,17.1048,137.97,-22.04,False UCAC4 536-029978,6.57730873,17.1235181,12.56,11.81,11.41,0.0,0,,6.60084654,17.1047883,3.99,3.95,0,0,0 1492,Oppolzer,15.78,12.344,1.2919,0,0,-2.856,10.26,,2.2,0 0,255.5040,2024,1,10,81.9567,137.7068,6.0559,0.11674,2.17276,1.91911,13.01,5.0,0.15 1.460,0.0187,0.0040,90,0.0061,Known errors,1.04,0,-1,-1 20240110_029978,60137.01 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:12 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org