IOTA/IOTA-ES occultation update for (454) Mathesis / UCAC4 314-234544 event on 2024 Nov 23, 18:37 UT Visible from Summary ------- On 2024 Nov 23 UT, the 81.7117972546323 km diameter asteroid (454) Mathesis will occult a 11.9 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.99 mag to 14.79 mag (the magnitude of the asteroid) for at most 2.080 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: 100 * date and approx. time of event: 2024 Nov 23, 18:34 - 2024 Nov 23, 18:39 * geocentric midpoint of event [JD]: 2460638.27587487 * magnitude of target star: 11.87 * magnitude drop [mag]: 2.99 * estimated maximum duration [s]: 2.080 * Moon: 43 % sunlit, 128° distance * Sun: 46° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 84 * 1 sigma uncertainty interval [path widths]: +/- 0.05 * 1 sigma uncertainty interval [seconds]: +/- 0.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.006, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.006", 0.002", 86°) * approx speed of asteroid's shadow [km/s]: 39.4711 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 314-234544 by 454 Mathesis on 2024 Nov 23 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 -153 0 0 -21 27 53 18 34 39.0 0 119 43 -21 54 14 -21 1 34 -21 56 59 -20 58 50 .... -152 0 0 -21 59 31 18 34 39.1 1 119 44 -22 25 51 -21 33 15 -22 28 36 -21 30 30 0.28 -151 0 0 -22 30 55 18 34 39.2 3 119 45 -22 57 13 -22 4 40 -22 59 58 -22 1 56 0.27 -150 0 0 -23 2 3 18 34 39.3 4 118 46 -23 28 19 -22 35 50 -23 31 4 -22 33 6 0.26 -149 0 0 -23 32 54 18 34 39.6 5 118 46 -23 59 9 -23 6 43 -24 1 53 -23 4 0 0.26 -148 0 0 -24 3 28 18 34 39.8 6 117 47 -24 29 41 -23 37 20 -24 32 25 -23 34 36 0.26 -147 0 0 -24 33 45 18 34 40.2 7 117 48 -24 59 55 -24 7 38 -25 2 39 -24 4 55 0.26 -146 0 0 -25 3 43 18 34 40.5 8 117 49 -25 29 50 -24 37 39 -25 32 34 -24 34 56 0.26 -145 0 0 -25 33 22 18 34 41.0 9 116 50 -25 59 27 -25 7 20 -26 2 10 -25 4 38 0.26 -144 0 0 -26 2 41 18 34 41.5 10 116 51 -26 28 43 -25 36 42 -26 31 26 -25 33 59 0.26 -143 0 0 -26 31 39 18 34 42.0 11 115 52 -26 57 39 -26 5 43 -27 0 21 -26 3 1 0.26 -142 0 0 -27 0 17 18 34 42.6 12 115 53 -27 26 13 -26 34 24 -27 28 56 -26 31 42 0.26 -141 0 0 -27 28 33 18 34 43.2 13 114 54 -27 54 27 -27 2 43 -27 57 9 -27 0 1 0.26 -140 0 0 -27 56 27 18 34 43.9 14 114 55 -28 22 18 -27 30 40 -28 25 0 -27 27 59 0.26 -139 0 0 -28 23 59 18 34 44.6 15 113 56 -28 49 46 -27 58 15 -28 52 28 -27 55 35 0.26 -138 0 0 -28 51 8 18 34 45.4 16 113 56 -29 16 52 -28 25 28 -29 19 33 -28 22 47 0.26 -137 0 0 -29 17 54 18 34 46.2 17 112 57 -29 43 35 -28 52 17 -29 46 15 -28 49 37 0.26 -136 0 0 -29 44 16 18 34 47.0 18 112 58 -30 9 53 -29 18 42 -30 12 34 -29 16 2 0.26 -135 0 0 -30 10 14 18 34 47.9 19 111 59 -30 35 48 -29 44 44 -30 38 28 -29 42 4 0.25 -134 0 0 -30 35 48 18 34 48.8 20 111 60 -31 1 18 -30 10 21 -31 3 58 -30 7 42 0.25 -133 0 0 -31 0 57 18 34 49.8 21 110 60 -31 26 24 -30 35 34 -31 29 3 -30 32 55 0.25 -132 0 0 -31 25 42 18 34 50.8 22 110 61 -31 51 4 -31 0 22 -31 53 43 -30 57 44 0.25 -131 0 0 -31 50 1 18 34 51.8 23 109 62 -32 15 20 -31 24 45 -32 17 58 -31 22 7 0.25 -130 0 0 -32 13 55 18 34 52.9 23 109 62 -32 39 10 -31 48 42 -32 41 48 -31 46 5 0.25 -129 0 0 -32 37 23 18 34 54.0 24 108 63 -33 2 34 -32 12 14 -33 5 12 -32 9 37 0.25 -128 0 0 -33 0 25 18 34 55.2 25 107 64 -33 25 33 -32 35 21 -33 28 10 -32 32 44 0.25 -127 0 0 -33 23 2 18 34 56.3 26 107 64 -33 48 6 -32 58 1 -33 50 43 -32 55 25 0.25 -126 0 0 -33 45 13 18 34 57.5 27 106 65 -34 10 13 -33 20 16 -34 12 49 -33 17 40 0.25 -125 0 0 -34 6 57 18 34 58.8 28 106 66 -34 31 53 -33 42 4 -34 34 29 -33 39 28 0.25 -124 0 0 -34 28 15 18 35 0.0 29 105 66 -34 53 8 -34 3 26 -34 55 43 -34 0 51 0.25 -123 0 0 -34 49 7 18 35 1.3 30 104 67 -35 13 56 -34 24 22 -35 16 31 -34 21 47 0.25 -122 0 0 -35 9 33 18 35 2.6 31 104 67 -35 34 17 -34 44 51 -35 36 52 -34 42 17 0.25 -121 0 0 -35 29 32 18 35 3.9 32 103 68 -35 54 12 -35 4 54 -35 56 47 -35 2 20 0.25 -120 0 0 -35 49 4 18 35 5.3 32 102 68 -36 13 41 -35 24 31 -36 16 15 -35 21 57 0.25 -119 0 0 -36 8 11 18 35 6.7 33 102 68 -36 32 43 -35 43 40 -36 35 17 -35 41 7 0.25 -118 0 0 -36 26 50 18 35 8.1 34 101 69 -36 51 19 -36 2 24 -36 53 52 -35 59 51 0.25 -117 0 0 -36 45 3 18 35 9.5 35 100 69 -37 9 29 -36 20 41 -37 12 1 -36 18 9 0.25 -116 0 0 -37 2 50 18 35 11.0 36 100 70 -37 27 12 -36 38 31 -37 29 44 -36 35 59 0.25 -115 0 0 -37 20 10 18 35 12.4 37 99 70 -37 44 28 -36 55 55 -37 47 0 -36 53 24 0.25 -114 0 0 -37 37 4 18 35 13.9 38 98 70 -38 1 18 -37 12 53 -38 3 50 -37 10 22 0.25 -113 0 0 -37 53 32 18 35 15.4 38 97 70 -38 17 42 -37 29 24 -38 20 14 -37 26 54 0.25 -112 0 0 -38 9 33 18 35 17.0 39 97 70 -38 33 40 -37 45 29 -38 36 11 -37 42 59 0.25 -111 0 0 -38 25 9 18 35 18.5 40 96 71 -38 49 12 -38 1 8 -38 51 43 -37 58 38 0.25 -110 0 0 -38 40 18 18 35 20.1 41 95 71 -39 4 18 -38 16 21 -39 6 48 -38 13 51 0.25 -109 0 0 -38 55 1 18 35 21.7 42 94 71 -39 18 57 -38 31 7 -39 21 27 -38 28 38 0.25 -108 0 0 -39 9 18 18 35 23.2 42 93 71 -39 33 11 -38 45 28 -39 35 40 -38 42 59 0.25 -107 0 0 -39 23 9 18 35 24.9 43 93 71 -39 46 59 -38 59 22 -39 49 28 -38 56 54 0.25 -106 0 0 -39 36 35 18 35 26.5 44 92 71 -40 0 21 -39 12 51 -40 2 50 -39 10 23 0.25 -105 0 0 -39 49 35 18 35 28.1 45 91 71 -40 13 18 -39 25 54 -40 15 46 -39 23 26 0.25 -104 0 0 -40 2 9 18 35 29.8 46 90 70 -40 25 49 -39 38 31 -40 28 17 -39 36 4 0.25 -103 0 0 -40 14 18 18 35 31.4 46 89 70 -40 37 55 -39 50 43 -40 40 23 -39 48 16 0.25 -102 0 0 -40 26 1 18 35 33.1 47 88 70 -40 49 35 -40 2 29 -40 52 3 -40 0 2 0.25 -101 0 0 -40 37 19 18 35 34.8 48 88 70 -41 0 51 -40 13 50 -41 3 18 -40 11 24 0.25 -100 0 0 -40 48 12 18 35 36.5 49 87 70 -41 11 41 -40 24 46 -41 14 8 -40 22 20 0.25 - 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9 58 0 0.28 27 0 0 - 9 53 28 18 39 48.1 13 244 -32 -10 19 50 - 9 27 10 -10 22 35 - 9 24 26 0.28 28 0 0 - 9 19 59 18 39 48.9 12 244 -34 - 9 46 19 - 8 53 42 - 9 49 4 - 8 50 58 0.28 29 0 0 - 8 46 36 18 39 49.5 11 244 -35 - 9 12 54 - 8 20 22 - 9 15 39 - 8 17 38 0.28 30 0 0 - 8 13 22 18 39 50.1 10 244 -36 - 8 39 38 - 7 47 9 - 8 42 22 - 7 44 26 0.29 31 0 0 - 7 40 17 18 39 50.6 9 243 -37 - 8 6 30 - 7 14 6 - 8 9 14 - 7 11 23 0.29 32 0 0 - 7 7 22 18 39 51.1 8 243 -38 - 7 33 33 - 6 41 14 - 7 36 17 - 6 38 31 0.30 33 0 0 - 6 34 38 18 39 51.5 6 243 -39 - 7 0 46 - 6 8 32 - 7 3 30 - 6 5 50 0.30 34 0 0 - 6 2 6 18 39 51.8 5 243 -40 - 6 28 12 - 5 36 3 - 6 30 55 - 5 33 21 0.31 35 0 0 - 5 29 47 18 39 52.1 4 243 -42 - 5 55 50 - 5 3 47 - 5 58 33 - 5 1 5 0.33 36 0 0 - 4 57 42 18 39 52.3 3 243 -43 - 5 23 42 - 4 31 45 - 5 26 25 - 4 29 3 0.36 37 0 0 - 4 25 51 18 39 52.5 2 243 -44 - 4 51 49 - 3 59 57 - 4 54 31 - 3 57 16 0.41 38 0 0 - 3 54 17 18 39 52.5 1 243 -45 - 4 20 11 - 3 28 26 - 4 22 53 - 3 25 44 0.64 Uncertainty in time = +/- 0 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 314-234544 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 18 45.6045 DE: -27 23 11.677 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 18 45.6045 DE: -27 23 11.677 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.9 * B mag [mag]: 12.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (454) Mathesis asteroid class: approx. diameter [km]: 82 approx. diameter ["]: 0.035 distance from Earth [AU]: 3.20160 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#127 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): 0.006", 0.002", 85.823° remarks: * orbital elements for (454)Mathesis : Mean anomaly = 81.2528631185 deg Arg. of pericenter = 177.0676305426 deg Long. of node = 32.1646216037 deg Inclination = 6.2921798368 deg Eccentricity = 0.1116246821 Semimajor axis = 2.6273908352 AU Perihelion dist = 2.3341091684 AU Mag: H = 9.32, G = 0.15 Epoch of elements : MJD 60637.77587471 TDT (2024 Nov 23.7759) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1272023Apr24,2.08,2024,11,23,18.620997,0.040934,-0.237721,21.940155,3.868484,0.004231,0.000217,-0.000001,0.000000 -52.4667,-27.3427,-102.66,-20.56,False UCAC4 314-234544,19.31266798,-27.3865769,12.80,11.87,11.37,0.1,0,,19.33812055,-27.3427437,3.00,3.04,0,0,0 454,Mathesis,14.79,81.944,3.2016,0,0,4.523,10.63,,5.2,0 0,81.0733,2024,11,23,177.0676,32.1646,6.2922,0.11162,2.62739,2.33411,9.32,5.0,0.15 1.052,0.0063,0.0017,86,0.0018,Known errors,0.91,0,-1,-1 20241123_234544,60140.71 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:04 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org