IOTA/IOTA-ES occultation update for (5027) Androgeos / TYC 2439-00575-1 event on 2023 Nov 21, 05:42 UT Visible from South America, Mexico Summary ------- On 2023 Nov 21 UT, the 59.2 km diameter asteroid (5027) Androgeos will occult a 11.9 mag star in the constellation Gemini for observers along a path across South America, Mexico. In the case of an occultation, the combined light of the asteroid and the star will drop by 5.00 mag to 16.89 mag (the magnitude of the asteroid) for at most 3.940 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: 60 * date and approx. time of event: 2023 Nov 21, 05:37 - 2023 Nov 21, 05:49 * geocentric midpoint of event [JD]: 2460269.73823563 * magnitude of target star: 11.90 * magnitude drop [mag]: 5.00 * estimated maximum duration [s]: 3.940 * Moon: 59 % sunlit, 121° distance * Sun: 138° distance * rough path description: South America, Mexico Additional comments ------------------- RUWE The occultation path -------------------- * approximate projected width [km]: 71 * 1 sigma uncertainty interval [path widths]: +/- 1.04 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.021", 0.001", 65°) * approx speed of asteroid's shadow [km/s]: 15.0335 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2439-00575-1 by 5027 Androgeos on 2023 Nov 21 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 0 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 11 0 29 .. .. .. .... -142 0 0 10 27 56 5 48 56.4 1 57 -40 10 50 54 10 4 51 11 38 4 9 16 38 .... -141 0 0 11 4 48 5 48 56.1 2 57 -41 11 27 31 10 41 58 12 14 10 9 54 17 0.42 -140 0 0 11 40 12 5 48 55.7 3 57 -42 12 2 41 11 17 36 12 48 52 10 30 26 0.52 -139 0 0 12 14 11 5 48 55.0 4 58 -43 12 36 26 11 51 49 13 22 9 11 5 7 0.56 -138 0 0 12 46 46 5 48 54.2 5 58 -44 13 8 48 12 24 37 13 54 5 11 38 23 0.59 -137 0 0 13 17 59 5 48 53.1 7 58 -45 13 39 49 12 56 2 14 24 41 12 10 15 0.61 -136 0 0 13 47 53 5 48 51.9 8 58 -46 14 9 31 13 26 8 14 54 0 12 40 46 0.62 -135 0 0 14 16 28 5 48 50.6 9 58 -47 14 37 56 13 54 55 15 22 2 13 9 57 0.63 -134 0 0 14 43 47 5 48 49.1 10 59 -48 15 5 4 14 22 25 15 48 49 13 37 49 0.63 -133 0 0 15 9 52 5 48 47.4 11 59 -50 15 30 59 14 48 39 16 14 24 14 4 25 0.64 -132 0 0 15 34 43 5 48 45.6 12 59 -51 15 55 41 15 13 40 16 38 46 14 29 47 0.64 -131 0 0 15 58 23 5 48 43.6 13 59 -52 16 19 12 15 37 29 17 1 59 14 53 55 0.65 -130 0 0 16 20 53 5 48 41.5 14 60 -53 16 41 32 16 0 7 17 24 3 15 16 51 0.65 -129 0 0 16 42 13 5 48 39.2 15 60 -54 17 2 45 16 21 36 17 44 59 15 38 37 0.65 -128 0 0 17 2 25 5 48 36.9 16 60 -55 17 22 50 16 41 56 18 4 48 15 59 13 0.65 -127 0 0 17 21 31 5 48 34.4 17 60 -56 17 41 49 17 1 9 18 23 33 16 18 41 0.65 -126 0 0 17 39 32 5 48 31.8 18 61 -57 17 59 42 17 19 16 18 41 13 16 37 3 0.65 -125 0 0 17 56 28 5 48 29.0 19 61 -57 18 16 32 17 36 18 18 57 50 16 54 19 0.66 -124 0 0 18 12 20 5 48 26.2 20 61 -58 18 32 19 17 52 17 19 13 24 17 10 30 0.66 -123 0 0 18 27 10 5 48 23.2 21 61 -59 18 47 3 18 7 12 19 27 57 17 25 37 0.66 -122 0 0 18 40 58 5 48 20.1 22 61 -60 19 0 46 18 21 6 19 41 30 17 39 41 0.66 -121 0 0 18 53 46 5 48 16.9 22 62 -61 19 13 29 18 33 58 19 54 3 17 52 43 0.66 -120 0 0 19 5 33 5 48 13.6 23 62 -62 19 25 11 18 45 49 20 5 37 18 4 44 0.66 -119 0 0 19 16 20 5 48 10.2 24 62 -63 19 35 55 18 56 41 20 16 12 18 15 45 0.66 -118 0 0 19 26 9 5 48 6.7 25 62 -64 19 45 40 19 6 33 20 25 50 18 25 45 0.66 -117 0 0 19 34 59 5 48 3.0 26 62 -65 19 54 27 19 15 27 20 34 31 18 34 46 0.66 -116 0 0 19 42 52 5 47 59.3 27 63 -66 20 2 17 19 23 23 20 42 14 18 42 48 0.66 -115 0 0 19 49 48 5 47 55.5 28 63 -67 20 9 10 19 30 21 20 49 2 18 49 51 0.66 -114 0 0 19 55 46 5 47 51.6 29 63 -68 20 15 6 19 36 22 20 54 54 18 55 57 0.66 -113 0 0 20 0 48 5 47 47.5 30 63 -69 20 20 6 19 41 26 20 59 50 19 1 6 0.66 -112 0 0 20 4 54 5 47 43.4 30 63 -70 20 24 11 19 45 34 21 3 51 19 5 17 0.66 -111 0 0 20 8 4 5 47 39.2 31 63 -71 20 27 19 19 48 45 21 6 57 19 8 31 0.66 -110 0 0 20 10 19 5 47 34.9 32 63 -72 20 29 33 19 51 1 21 9 8 19 10 48 0.66 -109 0 0 20 11 38 5 47 30.5 33 64 -72 20 30 51 19 52 20 21 10 25 19 12 9 0.66 -108 0 0 20 12 1 5 47 25.9 34 64 -73 20 31 14 19 52 44 21 10 48 19 12 34 0.66 -107 0 0 20 11 30 5 47 21.3 35 64 -74 20 30 43 19 52 13 21 10 16 19 12 3 0.66 -106 0 0 20 10 3 5 47 16.6 35 64 -75 20 29 16 19 50 45 21 8 50 19 10 35 0.66 -105 0 0 20 7 41 5 47 11.8 36 64 -76 20 26 55 19 48 23 21 6 30 19 8 11 0.66 -104 0 0 20 4 24 5 47 7.0 37 64 -77 20 23 38 19 45 5 21 3 15 19 4 51 0.66 -103 0 0 20 0 11 5 47 2.0 38 64 -78 20 19 27 19 40 51 20 59 6 19 0 35 0.66 -102 0 0 19 55 3 5 46 56.9 39 64 -79 20 14 20 19 35 41 20 54 3 18 55 22 0.66 -101 0 0 19 48 59 5 46 51.7 39 64 -80 20 8 18 19 29 35 20 48 4 18 49 12 0.66 -100 0 0 19 41 59 5 46 46.4 40 63 -81 20 1 20 19 22 33 20 41 11 18 42 5 0.66 - 99 0 0 19 34 3 5 46 41.0 41 63 -82 19 53 27 19 14 35 20 33 23 18 34 2 0.66 - 98 0 0 19 25 10 5 46 35.5 42 63 -82 19 44 37 19 5 39 20 24 39 18 25 0 0.66 - 97 0 0 19 15 21 5 46 30.0 42 63 -83 19 34 51 18 55 47 20 14 58 18 15 1 0.66 - 96 0 0 19 4 34 5 46 24.3 43 63 -84 19 24 7 18 44 56 20 4 22 18 4 3 0.66 - 95 0 0 18 52 50 5 46 18.5 44 62 -85 19 12 27 18 33 8 19 52 49 17 52 7 0.66 - 94 0 0 18 40 7 5 46 12.6 45 62 -86 18 59 48 18 20 21 19 40 19 17 39 11 0.66 - 93 0 0 18 26 25 5 46 6.6 45 62 -87 18 46 11 18 6 35 19 26 51 17 25 15 0.66 - 92 0 0 18 11 44 5 46 0.6 46 62 -87 18 31 35 17 51 49 19 12 24 17 10 19 0.66 - 91 0 0 17 56 3 5 45 54.4 47 61 -87 18 15 59 17 36 3 18 56 59 16 54 22 0.66 - 90 0 0 17 39 21 5 45 48.1 47 61 -87 17 59 22 17 19 15 18 40 34 16 37 23 0.66 - 89 0 0 17 21 38 5 45 41.6 48 60 -87 17 41 45 17 1 26 18 23 9 16 19 21 0.66 - 88 0 0 17 2 52 5 45 35.1 49 60 -86 17 23 5 16 42 34 18 4 42 16 0 15 0.66 - 87 0 0 16 43 3 5 45 28.5 49 59 -86 17 3 23 16 22 38 17 45 13 15 40 6 0.66 - 86 0 0 16 22 10 5 45 21.8 50 58 -85 16 42 37 16 1 38 17 24 42 15 18 51 0.66 - 85 0 0 16 0 13 5 45 14.9 51 58 -84 16 20 47 15 39 33 17 3 6 14 56 29 0.66 - 84 0 0 15 37 9 5 45 7.9 51 57 -83 15 57 51 15 16 21 16 40 26 14 33 1 0.66 - 83 0 0 15 12 58 5 45 0.9 52 56 -82 15 33 49 14 52 2 16 16 41 14 8 24 0.66 - 82 0 0 14 47 39 5 44 53.7 52 55 -81 15 8 39 14 26 34 15 51 48 13 42 38 0.66 - 81 0 0 14 21 11 5 44 46.4 53 54 -80 14 42 20 13 59 57 15 25 48 13 15 40 0.66 - 80 0 0 13 53 32 5 44 38.9 53 53 -79 14 14 50 13 32 9 14 58 38 12 47 32 0.66 - 79 0 0 13 24 42 5 44 31.4 54 52 -78 13 46 10 13 3 8 14 30 18 12 18 9 0.66 - 78 0 0 12 54 39 5 44 23.7 54 51 -77 13 16 17 12 32 54 14 0 47 11 47 33 0.66 - 77 0 0 12 23 21 5 44 15.9 55 50 -76 12 45 11 12 1 25 13 30 3 11 15 40 0.66 - 76 0 0 11 50 48 5 44 8.0 55 49 -75 12 12 49 11 28 40 12 58 5 10 42 30 0.66 - 75 0 0 11 16 57 5 44 0.0 55 47 -74 11 39 10 10 54 37 12 24 51 10 8 1 0.66 - 74 0 0 10 41 48 5 43 51.9 56 46 -72 11 4 14 10 19 15 11 50 19 9 32 11 0.66 - 73 0 0 10 5 18 5 43 43.6 56 45 -71 10 27 57 9 42 31 11 14 30 8 54 59 0.66 - 72 0 0 9 27 26 5 43 35.2 56 43 -70 9 50 19 9 4 25 10 37 20 8 16 24 0.66 - 71 0 0 8 48 11 5 43 26.7 56 42 -69 9 11 19 8 24 55 9 58 49 7 36 22 0.66 - 70 0 0 8 7 30 5 43 18.1 56 40 -68 8 30 53 7 43 59 9 18 54 6 54 53 0.67 - 69 0 0 7 25 22 5 43 9.3 56 38 -67 7 49 1 7 1 35 8 37 34 6 11 55 0.67 - 68 0 0 6 41 45 5 43 0.4 56 37 -65 7 5 41 6 17 41 7 54 47 5 27 25 0.67 - 67 0 0 5 56 37 5 42 51.5 56 35 -64 6 20 50 5 32 16 7 10 31 4 41 22 0.67 - 66 0 0 5 9 57 5 42 42.3 56 33 -63 5 34 28 4 45 17 6 24 45 3 53 44 0.67 - 65 0 0 4 21 41 5 42 33.1 56 31 -62 4 46 31 3 56 42 5 37 27 3 4 28 0.67 - 64 0 0 3 31 49 5 42 23.8 56 30 -61 3 56 59 3 6 30 4 48 34 2 13 33 0.67 - 63 0 0 2 40 18 5 42 14.4 56 28 -59 3 5 48 2 14 38 3 58 5 1 20 56 0.67 - 62 0 0 1 47 6 5 42 4.9 55 26 -58 2 12 58 1 21 4 3 5 58 0 26 34 0.67 - 61 0 0 0 52 11 5 41 55.2 55 24 -57 1 18 25 0 25 45 2 12 10 - 0 29 33 0.67 - 60 0 0 - 0 4 30 5 41 45.5 54 23 -55 0 22 8 - 0 31 20 1 16 41 - 1 27 30 0.67 - 59 0 0 - 1 2 58 5 41 35.7 54 21 -54 - 0 35 55 - 1 30 13 0 19 27 - 2 27 18 0.67 - 58 0 0 - 2 3 16 5 41 25.8 53 19 -53 - 1 35 47 - 2 30 57 - 0 39 33 - 3 28 59 0.67 - 57 0 0 - 3 5 25 5 41 15.9 52 18 -51 - 2 37 30 - 3 33 34 - 1 40 21 - 4 32 36 0.68 - 56 0 0 - 4 9 29 5 41 5.8 52 16 -50 - 3 41 5 - 4 38 7 - 2 43 0 - 5 38 11 0.68 - 55 0 0 - 5 15 29 5 40 55.8 51 14 -48 - 4 46 35 - 5 44 38 - 3 47 30 - 6 45 48 0.68 - 54 0 0 - 6 23 27 5 40 45.6 50 13 -47 - 5 54 2 - 6 53 8 - 4 53 55 - 7 55 28 0.68 - 53 0 0 - 7 33 26 5 40 35.5 49 11 -45 - 7 3 28 - 8 3 40 - 6 2 16 - 9 7 13 0.68 - 52 0 0 - 8 45 27 5 40 25.3 48 10 -44 - 8 14 55 - 9 16 17 - 7 12 34 -10 21 7 0.68 - 51 0 0 - 9 59 33 5 40 15.2 47 8 -42 - 9 28 24 -10 31 1 - 8 24 52 -11 37 12 0.68 - 50 0 0 -11 15 46 5 40 5.0 46 7 -41 -10 43 59 -11 47 53 - 9 39 12 -12 55 29 0.68 - 49 0 0 -12 34 7 5 39 54.9 45 6 -39 -12 1 40 -13 6 55 -10 55 34 -14 16 2 0.69 - 48 0 0 -13 54 38 5 39 44.8 43 5 -38 -13 21 29 -14 28 10 -12 13 59 -15 38 52 0.69 - 47 0 0 -15 17 20 5 39 34.8 42 3 -36 -14 43 27 -15 51 38 -13 34 30 -17 4 2 0.69 - 46 0 0 -16 42 16 5 39 24.9 41 2 -35 -16 7 35 -17 17 23 -14 57 7 -18 31 33 0.69 - 45 0 0 -18 9 25 5 39 15.2 39 1 -33 -17 33 55 -18 45 23 -16 21 50 -20 1 27 0.69 - 44 0 0 -19 38 49 5 39 5.5 38 0 -31 -19 2 27 -20 15 41 -17 48 40 -21 33 46 0.69 - 43 0 0 -21 10 28 5 38 56.0 36 359 -30 -20 33 10 -21 48 18 -19 17 36 -23 8 30 0.70 - 42 0 0 -22 44 22 5 38 46.8 35 358 -28 -22 6 6 -23 23 13 -20 48 39 -24 45 42 0.70 - 41 0 0 -24 20 31 5 38 37.7 33 357 -26 -23 41 13 -25 0 27 -22 21 47 -26 25 20 0.70 - 40 0 0 -25 58 53 5 38 29.0 31 356 -25 -25 18 31 -26 39 58 -23 56 59 -28 7 26 0.70 - 39 0 0 -27 39 28 5 38 20.5 30 355 -23 -26 57 56 -28 21 45 -25 34 13 -29 51 57 0.70 - 38 0 0 -29 22 12 5 38 12.3 28 355 -21 -28 39 28 -30 5 47 -27 13 25 -31 38 54 0.71 - 37 0 0 -31 7 3 5 38 4.5 26 354 -19 -30 23 1 -31 52 0 -28 54 32 -33 28 15 0.71 - 36 0 0 -32 53 56 5 37 57.1 24 353 -18 -32 8 33 -33 40 20 -30 37 29 -35 19 56 0.71 - 35 0 0 -34 42 47 5 37 50.2 22 352 -16 -33 55 57 -35 30 44 -32 22 11 -37 13 54 0.71 - 34 0 0 -36 33 29 5 37 43.7 20 351 -14 -35 45 7 -37 23 3 -34 8 30 -39 10 3 0.72 - 33 0 0 -38 25 53 5 37 37.7 18 351 -12 -37 35 55 -39 17 12 -35 56 19 -41 8 16 0.72 - 32 0 0 -40 19 51 5 37 32.3 17 350 -11 -39 28 12 -41 13 0 -37 45 28 -43 8 26 0.72 - 31 0 0 -42 15 10 5 37 27.5 14 349 -9 -41 21 45 -43 10 16 -39 35 46 -45 10 22 0.73 - 30 0 0 -44 11 39 5 37 23.3 12 348 -7 -43 16 21 -45 8 46 -41 27 0 -47 13 51 0.73 - 29 0 0 -46 9 0 5 37 19.7 10 348 -5 -45 11 46 -47 8 16 -43 18 54 -49 18 37 0.74 - 28 0 0 -48 6 56 5 37 16.7 8 347 -4 -47 7 41 -49 8 26 -45 11 14 -51 24 23 0.75 - 27 0 0 -50 5 6 5 37 14.4 6 346 -2 -49 3 47 -51 8 56 -47 3 39 -53 30 45 0.78 - 26 0 0 -52 3 6 5 37 12.8 4 345 0 -50 59 40 -53 9 19 -48 55 50 -55 37 18 0.82 - 25 0 0 -54 0 31 5 37 11.8 2 345 1 -52 54 57 -55 9 10 -50 47 24 .. .. .. 0.93 - 24 0 0 -55 56 51 5 37 11.5 0 344 3 -54 49 9 .. .. .. -52 37 57 .. .. .. 4.65 0 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. -54 27 3 .. .. .. .... Uncertainty in time = +/- 4 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: TYC 2439-00575-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 41 52.1071 DE: +32 34 53.112 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 41 52.1072 DE: +32 34 53.112 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (5027) Androgeos asteroid class: approx. diameter [km]: 59 approx. diameter ["]: 0.019 distance from Earth [AU]: 4.20430 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 date of fit: 2023 Oct 10 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): 0.021", 0.001", 65.117° remarks: * orbital elements for (5027)Androgeos : Mean anomaly = 25.7468633124 deg Arg. of pericenter = 346.0945361157 deg Long. of node = 78.2161162102 deg Inclination = 31.4520725352 deg Eccentricity = 0.0663865627 Semimajor axis = 5.2993560513 AU Perihelion dist = 4.9475500187 AU Mag: H = 9.74, G = 0.15 Epoch of elements : MJD 60269.23812500 TDT (2023 Nov 21.2381) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Oct10,3.94,2023,11,21,5.717655,-0.395375,-0.388668,-5.951115,6.048581,-0.004002,-0.000463,0.000001,0.000000 -44.8792,32.5583,90.67,-19.86,False TYC 2439-00575-1,6.69780753,32.5814200,0.00,11.90,0.00,0.0,0,,6.72397335,32.5582776,5.00,0.00,0,0,0 5027,Androgeos,16.89,59.200,4.2043,0,0,-0.984,12.65,,5.0,0 0,25.7276,2023,11,21,346.0945,78.2161,31.4521,0.06639,5.29936,4.94755,9.74,5.0,0.15 2.035,0.0213,0.0012,65,0.0214,Known errors,-1.00,0,-1,-1 20231121_0575-1,60232.88 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 21:07 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org