IOTA/IOTA-ES occultation update for (164) Eva / TYC 2529-00227-1 event on 2024 Jan 29, 05:26 UT Visible from Summary ------- On 2024 Jan 29 UT, the 104.557 km diameter asteroid (164) Eva will occult a 10.9 mag star in the constellation Ursa Major for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.48 mag to 14.31 mag (the magnitude of the asteroid) for at most 7.170 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 Jan 29, 05:21 - 2024 Jan 29, 05:31 * geocentric midpoint of event [JD]: 2460338.72663396 * magnitude of target star: 10.88 * magnitude drop [mag]: 3.48 * estimated maximum duration [s]: 7.170 * Moon: 90 % sunlit, 29° distance * Sun: 133° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 163 * 1 sigma uncertainty interval [path widths]: +/- 0.09 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.007, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.008", 0.002", 119°) * approx speed of asteroid's shadow [km/s]: 14.5795 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2529-00227-1 by 164 Eva on 2024 Jan 29 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 ' " Longitude Longitude Longitude Longitude .. .. .. -48 0 0 .. .. .... .. .. .. - 67 17 28 ... .. .. - 67 3 35 ... .. .. .... - 67 40 27 -47 0 0 5 21 41.0 1 32 -25 - 66 25 59 - 68 57 11 - 66 12 37 - 69 11 27 .... - 66 51 9 -46 0 0 5 21 41.4 2 31 -25 - 65 39 22 - 68 4 59 - 65 26 28 - 68 18 41 -0.89 - 66 6 32 -45 0 0 5 21 42.1 3 31 -26 - 64 57 7 - 67 17 47 - 64 44 39 - 67 31 0 -1.00 - 65 26 7 -44 0 0 5 21 42.9 5 30 -27 - 64 18 51 - 66 35 4 - 64 6 45 - 66 47 51 -1.06 - 64 49 32 -43 0 0 5 21 44.1 6 30 -28 - 63 44 12 - 65 56 25 - 63 32 27 - 66 8 48 -1.09 - 64 16 27 -42 0 0 5 21 45.4 7 29 -29 - 63 12 52 - 65 21 29 - 63 1 25 - 65 33 30 -1.12 - 63 46 35 -41 0 0 5 21 47.0 8 29 -30 - 62 44 36 - 64 49 55 - 62 33 25 - 65 1 38 -1.13 - 63 19 41 -40 0 0 5 21 48.7 9 29 -31 - 62 19 9 - 64 21 29 - 62 8 14 - 64 32 54 -1.15 - 62 55 33 -39 0 0 5 21 50.7 10 29 -32 - 61 56 20 - 63 55 57 - 61 45 39 - 64 7 6 -1.15 - 62 33 58 -38 0 0 5 21 52.9 11 28 -32 - 61 35 58 - 63 33 6 - 61 25 30 - 63 44 0 -1.16 - 62 14 48 -37 0 0 5 21 55.3 12 28 -33 - 61 17 55 - 63 12 45 - 61 7 39 - 63 23 27 -1.17 - 61 57 53 -36 0 0 5 21 57.9 13 28 -34 - 61 2 1 - 62 54 46 - 60 51 56 - 63 5 16 -1.17 - 61 43 6 -35 0 0 5 22 0.6 14 28 -35 - 60 48 11 - 62 39 0 - 60 38 16 - 62 49 19 -1.18 - 61 30 21 -34 0 0 5 22 3.6 15 28 -36 - 60 36 17 - 62 25 20 - 60 26 31 - 62 35 28 -1.18 - 61 19 29 -33 0 0 5 22 6.7 16 28 -37 - 60 26 14 - 62 13 39 - 60 16 37 - 62 23 38 -1.19 - 61 10 28 -32 0 0 5 22 10.0 17 28 -38 - 60 17 56 - 62 3 52 - 60 8 27 - 62 13 42 -1.19 - 61 3 11 -31 0 0 5 22 13.5 18 28 -39 - 60 11 20 - 61 55 53 - 60 1 58 - 62 5 35 -1.19 - 60 57 34 -30 0 0 5 22 17.2 19 28 -40 - 60 6 20 - 61 49 38 - 59 57 5 - 61 59 13 -1.19 - 60 53 34 -29 0 0 5 22 21.0 19 28 -40 - 60 2 54 - 61 45 2 - 59 53 45 - 61 54 31 -1.20 - 60 51 7 -28 0 0 5 22 25.0 20 28 -41 - 60 0 58 - 61 42 3 - 59 51 54 - 61 51 26 -1.20 - 60 50 11 -27 0 0 5 22 29.2 21 29 -42 - 60 0 30 - 61 40 38 - 59 51 31 - 61 49 55 -1.20 - 60 50 42 -26 0 0 5 22 33.5 22 29 -43 - 60 1 26 - 61 40 42 - 59 52 32 - 61 49 55 1.20 - 60 52 38 -25 0 0 5 22 38.0 23 29 -44 - 60 3 46 - 61 42 15 - 59 54 55 - 61 51 23 1.20 - 60 55 58 -24 0 0 5 22 42.7 24 29 -45 - 60 7 26 - 61 45 13 - 59 58 39 - 61 54 17 1.20 - 61 0 39 -23 0 0 5 22 47.6 25 29 -46 - 60 12 25 - 61 49 36 - 60 3 42 - 61 58 36 1.20 - 61 6 40 -22 0 0 5 22 52.6 26 30 -47 - 60 18 43 - 61 55 21 - 60 10 2 - 62 4 18 1.20 - 61 14 1 -21 0 0 5 22 57.7 26 30 -48 - 60 26 17 - 62 2 27 - 60 17 39 - 62 11 22 1.20 - 61 22 39 -20 0 0 5 23 3.1 27 30 -49 - 60 35 7 - 62 10 54 - 60 26 31 - 62 19 47 1.20 - 61 32 35 -19 0 0 5 23 8.6 28 31 -50 - 60 45 12 - 62 20 40 - 60 36 38 - 62 29 31 1.20 - 61 43 48 -18 0 0 5 23 14.2 29 31 -51 - 60 56 32 - 62 31 46 - 60 48 0 - 62 40 36 1.20 - 61 56 17 -17 0 0 5 23 20.0 29 32 -52 - 61 9 7 - 62 44 10 - 61 0 35 - 62 52 59 1.20 - 62 10 4 -16 0 0 5 23 26.0 30 32 -53 - 61 22 57 - 62 57 54 - 61 14 25 - 63 6 42 1.20 - 62 25 7 -15 0 0 5 23 32.1 31 33 -54 - 61 38 1 - 63 12 56 - 61 29 30 - 63 21 44 1.20 - 62 41 28 -14 0 0 5 23 38.4 32 33 -55 - 61 54 20 - 63 29 18 - 61 45 49 - 63 38 7 1.20 - 62 59 6 -13 0 0 5 23 44.9 32 34 -56 - 62 11 56 - 63 47 1 - 62 3 24 - 63 55 50 1.20 - 63 18 4 -12 0 0 5 23 51.5 33 34 -57 - 62 30 48 - 64 6 5 - 62 22 15 - 64 14 55 1.20 - 63 38 22 -11 0 0 5 23 58.3 34 35 -58 - 62 50 58 - 64 26 31 - 62 42 24 - 64 35 24 1.20 - 64 0 2 -10 0 0 5 24 5.2 34 35 -59 - 63 12 28 - 64 48 22 - 63 3 52 - 64 57 16 1.20 - 64 23 5 - 9 0 0 5 24 12.3 35 36 -60 - 63 35 18 - 65 11 39 - 63 26 40 - 65 20 36 1.20 - 64 47 33 - 8 0 0 5 24 19.5 35 37 -61 - 63 59 31 - 65 36 23 - 63 50 51 - 65 45 23 1.20 - 65 13 29 - 7 0 0 5 24 27.0 36 37 -62 - 64 25 9 - 66 2 38 - 64 16 26 - 66 11 42 1.20 - 65 40 55 - 6 0 0 5 24 34.5 37 38 -63 - 64 52 15 - 66 30 26 - 64 43 27 - 66 39 34 1.20 - 66 9 55 - 5 0 0 5 24 42.3 37 39 -64 - 65 20 51 - 66 59 51 - 65 11 59 - 67 9 4 1.20 - 66 40 31 - 4 0 0 5 24 50.2 38 40 -65 - 65 51 0 - 67 30 57 - 65 42 4 - 67 40 15 1.20 - 67 12 48 - 3 0 0 5 24 58.3 38 41 -66 - 66 22 47 - 68 3 47 - 66 13 45 - 68 13 11 1.20 - 67 46 51 - 2 0 0 5 25 6.5 38 41 -68 - 66 56 15 - 68 38 26 - 66 47 8 - 68 47 58 1.20 - 68 22 44 - 1 0 0 5 25 15.0 39 42 -69 - 67 31 30 - 69 15 0 - 67 22 16 - 69 24 40 1.19 - 69 0 33 0 0 0 5 25 23.6 39 43 -70 - 68 8 36 - 69 53 36 - 67 59 15 - 70 3 24 1.19 - 69 40 25 1 0 0 5 25 32.4 39 44 -71 - 68 47 41 - 70 34 20 - 68 38 10 - 70 44 18 1.19 Latitude Latitude Latitude Latitude - 70 0 0 1 28 21 5 25 36.6 39 45 -72 2 43 28 0 9 40 2 56 49 - 0 5 8 1.19 - 71 0 0 2 50 59 5 25 49.2 40 46 -73 4 2 40 1 36 13 4 15 26 1 22 13 1.19 - 72 0 0 4 7 52 5 26 1.3 40 47 -75 5 16 36 2 56 26 5 28 52 2 43 5 1.19 - 73 0 0 5 19 38 5 26 12.9 40 48 -76 6 25 48 4 11 4 6 37 37 3 58 17 1.19 - 74 0 0 6 26 46 5 26 24.0 40 49 -78 7 30 40 5 20 45 7 42 6 5 8 27 1.19 - 75 0 0 7 29 44 5 26 34.8 40 51 -79 8 31 37 6 25 55 8 42 42 6 14 2 1.19 - 76 0 0 8 28 51 5 26 45.2 40 52 -80 9 28 56 7 26 59 9 39 43 7 15 30 1.19 - 77 0 0 9 24 25 5 26 55.2 40 52 -81 10 22 54 8 24 19 10 33 24 8 13 10 1.19 - 78 0 0 10 16 43 5 27 4.9 39 53 -82 11 13 44 9 18 11 11 23 59 9 7 20 1.19 - 79 0 0 11 5 56 5 27 14.3 39 54 -83 12 1 39 10 8 50 12 11 40 9 58 15 1.19 - 80 0 0 11 52 18 5 27 23.4 39 55 -84 12 46 49 10 56 29 12 56 38 10 46 9 1.19 - 81 0 0 12 35 58 5 27 32.2 38 56 -84 13 29 23 11 41 19 13 39 0 11 31 12 1.19 - 82 0 0 13 17 5 5 27 40.7 38 56 -84 14 9 30 12 23 29 14 18 57 12 13 35 1.19 - 83 0 0 13 55 46 5 27 49.0 38 57 -84 14 47 17 13 3 9 14 56 34 12 53 26 1.19 - 84 0 0 14 32 10 5 27 57.0 37 57 -84 15 22 50 13 40 26 15 31 58 13 30 53 1.19 - 85 0 0 15 6 22 5 28 4.8 37 58 -83 15 56 16 14 15 27 16 5 16 14 6 3 1.19 - 86 0 0 15 38 28 5 28 12.4 36 58 -83 16 27 40 14 48 19 16 36 33 14 39 3 1.19 - 87 0 0 16 8 34 5 28 19.8 36 59 -82 16 57 7 15 19 5 17 5 53 15 9 57 1.19 - 88 0 0 16 36 43 5 28 26.9 35 59 -81 17 24 41 15 47 52 17 33 20 15 38 52 1.19 - 89 0 0 17 3 1 5 28 33.9 35 59 -80 17 50 26 16 14 44 17 59 0 16 5 50 1.19 - 90 0 0 17 27 30 5 28 40.6 34 60 -79 18 14 26 16 39 46 18 22 54 16 30 57 1.19 - 91 0 0 17 50 15 5 28 47.2 33 60 -78 18 36 43 17 2 59 18 45 7 16 54 16 1.19 - 92 0 0 18 11 18 5 28 53.6 33 60 -78 18 57 21 17 24 29 19 5 41 17 15 51 1.19 - 93 0 0 18 30 43 5 28 59.8 32 60 -77 19 16 23 17 44 17 19 24 38 17 35 43 1.19 - 94 0 0 18 48 31 5 29 5.9 31 60 -76 19 33 51 18 2 26 19 42 2 17 53 57 1.20 - 95 0 0 19 4 45 5 29 11.8 31 60 -75 19 49 46 18 18 59 19 57 54 18 10 33 1.20 - 96 0 0 19 19 26 5 29 17.5 30 61 -74 20 4 11 18 33 58 20 12 17 18 25 36 1.20 - 97 0 0 19 32 38 5 29 23.1 29 61 -73 20 17 8 18 47 25 20 25 11 18 39 5 1.20 - 98 0 0 19 44 20 5 29 28.5 29 61 -72 20 28 38 18 59 21 20 36 39 18 51 3 1.20 - 99 0 0 19 54 35 5 29 33.7 28 61 -71 20 38 42 19 9 47 20 46 41 19 1 32 1.20 -100 0 0 20 3 23 5 29 38.9 27 61 -70 20 47 21 19 18 45 20 55 18 19 10 31 1.20 -101 0 0 20 10 46 5 29 43.8 26 61 -69 20 54 37 19 26 15 21 2 32 19 18 3 1.20 -102 0 0 20 16 44 5 29 48.7 26 60 -68 21 0 29 19 32 19 21 8 23 19 24 8 1.20 -103 0 0 20 21 18 5 29 53.3 25 60 -67 21 4 59 19 36 57 21 12 52 19 28 47 1.21 -104 0 0 20 24 28 5 29 57.9 24 60 -66 21 8 6 19 40 10 21 16 0 19 32 1 1.21 -105 0 0 20 26 15 5 30 2.3 23 60 -66 21 9 52 19 41 58 21 17 45 19 33 48 1.21 -106 0 0 20 26 38 5 30 6.6 23 60 -65 21 10 16 19 42 20 21 18 9 19 34 11 1.21 -107 0 0 20 25 38 5 30 10.7 22 60 -64 21 9 18 19 41 17 21 17 11 19 33 7 1.21 -108 0 0 20 23 14 5 30 14.7 21 60 -63 21 6 58 19 38 49 21 14 52 19 30 38 1.21 -109 0 0 20 19 25 5 30 18.5 20 59 -62 21 3 15 19 34 55 21 11 10 19 26 43 1.22 -110 0 0 20 14 12 5 30 22.3 19 59 -61 20 58 9 19 29 34 21 6 6 19 21 21 1.22 -111 0 0 20 7 33 5 30 25.8 18 59 -60 20 51 39 19 22 46 20 59 38 19 14 31 1.22 -112 0 0 19 59 28 5 30 29.3 18 59 -59 20 43 45 19 14 29 20 51 45 19 6 12 1.22 -113 0 0 19 49 55 5 30 32.6 17 59 -58 20 34 24 19 4 42 20 42 26 18 56 23 1.23 -114 0 0 19 38 52 5 30 35.7 16 58 -57 20 23 36 18 53 25 20 31 41 18 45 2 1.23 -115 0 0 19 26 19 5 30 38.7 15 58 -56 20 11 19 18 40 34 20 19 27 18 32 8 1.23 -116 0 0 19 12 12 5 30 41.6 14 58 -55 19 57 31 18 26 8 20 5 43 18 17 39 1.24 -117 0 0 18 56 32 5 30 44.3 13 58 -54 19 42 11 18 10 6 19 50 26 18 1 32 1.24 -118 0 0 18 39 14 5 30 46.8 12 57 -53 19 25 16 17 52 23 19 33 35 17 43 45 1.25 -119 0 0 18 20 16 5 30 49.2 11 57 -52 19 6 43 17 32 59 19 15 7 17 24 16 1.25 -120 0 0 17 59 35 5 30 51.4 10 57 -52 18 46 31 17 11 49 18 54 59 17 3 0 1.26 -121 0 0 17 37 9 5 30 53.5 9 57 -51 18 24 35 16 48 50 18 33 9 16 39 55 1.26 -122 0 0 17 12 52 5 30 55.3 8 56 -50 18 0 52 16 23 58 18 9 32 16 14 56 1.27 -123 0 0 16 46 42 5 30 57.0 7 56 -49 17 35 19 15 57 9 17 44 5 15 48 0 1.29 -124 0 0 16 18 33 5 30 58.5 6 56 -48 17 7 50 15 28 18 17 16 44 15 19 1 1.30 -125 0 0 15 48 21 5 30 59.7 5 56 -46 16 38 22 14 57 19 16 47 23 14 47 53 1.32 -126 0 0 15 16 0 5 31 0.8 4 55 -45 16 6 49 14 24 7 16 15 59 14 14 31 1.36 -127 0 0 14 41 24 5 31 1.5 3 55 -44 15 33 5 13 48 34 15 42 24 13 38 48 1.42 -128 0 0 14 4 24 5 31 2.1 2 55 -43 14 57 3 13 10 33 15 6 32 13 0 35 1.57 -129 0 0 13 24 54 5 31 2.4 1 55 -42 14 18 36 .. .. .. 14 28 16 .. .. .. 2.40 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: TYC 2529-00227-1 * constellation : Ursa Major * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 12 00 38.3603 DE: +34 38 58.921 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 12 00 38.3605 DE: +34 38 58.922 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.9 * B mag [mag]: 11.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (164) Eva asteroid class: approx. diameter [km]: 105 approx. diameter ["]: 0.055 distance from Earth [AU]: 2.61180 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#98 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): 0.008", 0.002", 119.102° remarks: * orbital elements for (164)Eva : Mean anomaly = 131.6926796578 deg Arg. of pericenter = 284.0358839330 deg Long. of node = 76.7841273892 deg Inclination = 24.4756409368 deg Eccentricity = 0.3469406247 Semimajor axis = 2.6313772911 AU Perihelion dist = 1.7184456100 AU Mag: H = 8.85, G = 0.15 Epoch of elements : MJD 60338.22663370 TDT (2024 Jan 29.2266) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#982023Apr24,7.17,2024,1,29,5.439215,-0.698738,-0.312926,-3.364911,7.509648,-0.004356,-0.000569,0.000001,-0.000001 -29.0890,34.5124,101.65,-18.06,False TYC 2529-00227-1,12.01065562,34.6497003,11.11,10.88,10.76,0.0,0,,12.03148948,34.5123536,3.47,3.16,0,0,0 164,Eva,14.31,104.557,2.6118,0,0,-0.917,25.29,,5.8,0 0,131.6403,2024,1,29,284.0359,76.7841,24.4756,0.34694,2.63138,1.71845,8.85,5.0,0.15 1.091,0.0080,0.0019,119,0.0050,Known errors,1.01,0,-1,-1 20240129_0227-1,60137.03 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:50 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org