IOTA/IOTA-ES occultation update for (1302) Werra / UCAC4 564-026268 event on 2024 Sep 07, 23:15 UT Visible from Summary ------- On 2024 Sep 07 UT, the 33.938298393429 km diameter asteroid (1302) Werra will occult a 10.7 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 5.61 mag to 16.30 mag (the magnitude of the asteroid) for at most 1.210 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 Sep 07, 23:12 - 2024 Sep 07, 23:19 * geocentric midpoint of event [JD]: 2460561.46915838 * magnitude of target star: 10.70 * magnitude drop [mag]: 5.61 * estimated maximum duration [s]: 1.210 * Moon: 19 % sunlit, 123° distance * Sun: 71° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 38 * 1 sigma uncertainty interval [path widths]: +/- 0.11 * 1 sigma uncertainty interval [seconds]: +/- 1.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.023, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.002", 89°) * approx speed of asteroid's shadow [km/s]: 28.1835 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 564-026268 by 1302 Werra on 2024 Sep 7 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 19 0 0 26 15 27 23 12 14.1 1 65 -57 26 3 54 26 27 0 26 1 22 26 29 34 .... 20 0 0 26 41 7 23 12 14.2 2 65 -57 26 29 34 26 52 41 26 27 1 26 55 15 -0.47 21 0 0 27 6 46 23 12 14.4 3 66 -56 26 55 13 27 18 21 26 52 40 27 20 54 -0.49 22 0 0 27 32 24 23 12 14.6 4 66 -55 27 20 50 27 43 59 27 18 17 27 46 32 -0.50 23 0 0 27 57 59 23 12 14.9 5 67 -55 27 46 25 28 9 34 27 43 52 28 12 8 -0.50 24 0 0 28 23 31 23 12 15.3 6 67 -54 28 11 57 28 35 6 28 9 24 28 37 40 -0.51 25 0 0 28 49 0 23 12 15.8 7 68 -53 28 37 26 29 0 35 28 34 53 29 3 9 -0.51 26 0 0 29 14 24 23 12 16.3 8 68 -53 29 2 50 29 25 59 29 0 16 29 28 33 -0.51 27 0 0 29 39 43 23 12 16.9 9 69 -52 29 28 9 29 51 18 29 25 35 29 53 52 -0.51 28 0 0 30 4 56 23 12 17.6 10 69 -51 29 53 22 30 16 32 29 50 49 30 19 5 -0.51 29 0 0 30 30 3 23 12 18.4 10 70 -50 30 18 29 30 41 39 30 15 56 30 44 12 -0.51 30 0 0 30 55 3 23 12 19.2 11 70 -49 30 43 29 31 6 39 30 40 56 31 9 12 -0.51 31 0 0 31 19 56 23 12 20.1 12 71 -49 31 8 22 31 31 31 31 5 49 31 34 5 -0.51 32 0 0 31 44 40 23 12 21.0 13 71 -48 31 33 7 31 56 15 31 30 34 31 58 49 -0.52 33 0 0 32 9 16 23 12 22.0 14 72 -47 31 57 43 32 20 51 31 55 10 32 23 24 -0.52 34 0 0 32 33 42 23 12 23.1 15 73 -46 32 22 9 32 45 17 32 19 36 32 47 50 -0.52 35 0 0 32 57 59 23 12 24.2 16 73 -45 32 46 26 33 9 33 32 43 53 33 12 6 -0.52 36 0 0 33 22 4 23 12 25.4 17 74 -45 33 10 32 33 33 38 33 8 0 33 36 11 -0.52 37 0 0 33 45 59 23 12 26.6 18 74 -44 33 34 28 33 57 33 33 31 55 34 0 6 -0.52 38 0 0 34 9 43 23 12 27.9 19 75 -43 33 58 12 34 21 16 33 55 39 34 23 49 -0.52 39 0 0 34 33 14 23 12 29.3 20 76 -42 34 21 44 34 44 47 34 19 11 34 47 19 -0.52 40 0 0 34 56 34 23 12 30.7 21 76 -41 34 45 3 35 8 5 34 42 31 35 10 38 -0.52 41 0 0 35 19 40 23 12 32.2 22 77 -41 35 8 10 35 31 10 35 5 38 35 33 43 -0.52 42 0 0 35 42 32 23 12 33.7 22 78 -40 35 31 3 35 54 2 35 28 32 35 56 35 -0.52 43 0 0 36 5 11 23 12 35.2 23 78 -39 35 53 43 36 16 40 35 51 11 36 19 13 -0.52 44 0 0 36 27 36 23 12 36.8 24 79 -38 36 16 8 36 39 4 36 13 37 36 41 36 -0.52 45 0 0 36 49 45 23 12 38.5 25 80 -37 36 38 19 37 1 13 36 35 48 37 3 45 -0.52 46 0 0 37 11 40 23 12 40.2 26 80 -36 37 0 15 37 23 7 36 57 43 37 25 39 -0.52 47 0 0 37 33 20 23 12 41.9 27 81 -36 37 21 55 37 44 46 37 19 24 37 47 17 -0.52 48 0 0 37 54 43 23 12 43.7 28 82 -35 37 43 20 38 6 8 37 40 49 38 8 40 -0.52 49 0 0 38 15 51 23 12 45.5 28 82 -34 38 4 28 38 27 15 38 1 58 38 29 46 -0.52 50 0 0 38 36 43 23 12 47.4 29 83 -33 38 25 21 38 48 6 38 22 50 38 50 37 -0.52 51 0 0 38 57 17 23 12 49.3 30 84 -32 38 45 56 39 8 39 38 43 26 39 11 10 -0.52 52 0 0 39 17 35 23 12 51.2 31 85 -32 39 6 15 39 28 56 39 3 45 39 31 26 -0.52 53 0 0 39 37 35 23 12 53.2 32 86 -31 39 26 16 39 48 55 39 23 47 39 51 25 -0.52 54 0 0 39 57 18 23 12 55.1 32 86 -30 39 46 0 40 8 37 39 43 31 40 11 7 -0.52 55 0 0 40 16 43 23 12 57.2 33 87 -29 40 5 26 40 28 0 40 2 57 40 30 30 -0.52 56 0 0 40 35 50 23 12 59.2 34 88 -28 40 24 35 40 47 7 40 22 6 40 49 36 -0.52 57 0 0 40 54 39 23 13 1.3 35 89 -27 40 43 25 41 5 55 40 40 57 41 8 24 -0.52 58 0 0 41 13 10 23 13 3.4 36 90 -27 41 1 57 41 24 24 40 59 29 41 26 53 -0.52 59 0 0 41 31 23 23 13 5.6 36 91 -26 41 20 11 41 42 35 41 17 43 41 45 4 -0.52 60 0 0 41 49 16 23 13 7.7 37 92 -25 41 38 6 42 0 28 41 35 38 42 2 57 -0.52 61 0 0 42 6 51 23 13 9.9 38 92 -24 41 55 42 42 18 2 41 53 15 42 20 30 -0.52 62 0 0 42 24 8 23 13 12.1 39 93 -24 42 13 0 42 35 17 42 10 32 42 37 45 -0.52 63 0 0 42 41 5 23 13 14.3 39 94 -23 42 29 58 42 52 13 42 27 31 42 54 40 -0.52 64 0 0 42 57 43 23 13 16.6 40 95 -22 42 46 38 43 8 50 42 44 11 43 11 17 -0.52 65 0 0 43 14 2 23 13 18.8 41 96 -21 43 2 58 43 25 7 43 0 31 43 27 34 -0.52 66 0 0 43 30 2 23 13 21.1 41 97 -20 43 18 59 43 41 6 43 16 33 43 43 33 -0.52 67 0 0 43 45 42 23 13 23.4 42 98 -20 43 34 41 43 56 45 43 32 15 43 59 11 -0.52 68 0 0 44 1 3 23 13 25.8 43 99 -19 43 50 3 44 12 5 43 47 37 44 14 31 -0.52 69 0 0 44 16 5 23 13 28.1 43 100 -18 44 5 6 44 27 5 44 2 41 44 29 31 -0.52 70 0 0 44 30 47 23 13 30.4 44 101 -17 44 19 49 44 41 46 44 17 24 44 44 12 -0.52 71 0 0 44 45 10 23 13 32.8 45 103 -17 44 34 14 44 56 8 44 31 49 44 58 33 -0.52 72 0 0 44 59 13 23 13 35.2 45 104 -16 44 48 18 45 10 10 44 45 54 45 12 35 -0.52 73 0 0 45 12 57 23 13 37.6 46 105 -15 45 2 3 45 23 52 44 59 39 45 26 17 -0.52 74 0 0 45 26 22 23 13 40.0 47 106 -14 45 15 29 45 37 15 45 13 5 45 39 40 -0.52 75 0 0 45 39 26 23 13 42.4 47 107 -14 45 28 35 45 50 19 45 26 11 45 52 43 -0.52 76 0 0 45 52 12 23 13 44.8 48 108 -13 45 41 21 46 3 3 45 38 58 46 5 27 -0.52 77 0 0 46 4 38 23 13 47.2 48 109 -12 45 53 49 46 15 28 45 51 25 46 17 51 -0.52 78 0 0 46 16 44 23 13 49.7 49 111 -11 46 5 56 46 27 33 46 3 33 46 29 56 -0.52 79 0 0 46 28 31 23 13 52.1 50 112 -11 46 17 45 46 39 19 46 15 22 46 41 42 -0.52 80 0 0 46 39 59 23 13 54.6 50 113 -10 46 29 13 46 50 45 46 26 51 46 53 8 -0.52 81 0 0 46 51 7 23 13 57.1 51 114 -9 46 40 23 47 1 53 46 38 1 47 4 15 -0.52 82 0 0 47 1 56 23 13 59.5 51 116 -9 46 51 13 47 12 40 46 48 51 47 15 3 -0.52 83 0 0 47 12 26 23 14 2.0 52 117 -8 47 1 44 47 23 9 46 59 22 47 25 31 -0.52 84 0 0 47 22 37 23 14 4.5 52 118 -7 47 11 56 47 33 19 47 9 34 47 35 40 -0.52 85 0 0 47 32 28 23 14 7.0 53 120 -6 47 21 48 47 43 9 47 19 27 47 45 31 -0.52 86 0 0 47 42 0 23 14 9.5 53 121 -6 47 31 21 47 52 40 47 29 0 47 55 2 -0.52 87 0 0 47 51 13 23 14 12.0 54 123 -5 47 40 36 48 1 52 47 38 15 48 4 13 -0.52 88 0 0 48 0 8 23 14 14.5 54 124 -4 47 49 31 48 10 45 47 47 10 48 13 6 -0.52 89 0 0 48 8 43 23 14 17.0 55 125 -4 47 58 7 48 19 20 47 55 47 48 21 40 -0.52 90 0 0 48 16 59 23 14 19.5 55 127 -3 48 6 24 48 27 35 48 4 4 48 29 55 -0.52 91 0 0 48 24 56 23 14 22.0 56 128 -2 48 14 22 48 35 31 48 12 3 48 37 52 -0.52 92 0 0 48 32 35 23 14 24.5 56 130 -2 48 22 2 48 43 9 48 19 42 48 45 29 -0.52 93 0 0 48 39 55 23 14 27.1 57 132 -1 48 29 23 48 50 28 48 27 3 48 52 48 -0.52 94 0 0 48 46 56 23 14 29.6 57 133 0 48 36 25 48 57 29 48 34 6 48 59 48 -0.52 95 0 0 48 53 39 23 14 32.1 57 135 0 48 43 8 49 4 10 48 40 49 49 6 30 -0.52 96 0 0 49 0 3 23 14 34.6 58 136 1 48 49 33 49 10 34 48 47 14 49 12 53 -0.52 97 0 0 49 6 8 23 14 37.2 58 138 2 48 55 39 49 16 39 48 53 20 49 18 58 -0.52 98 0 0 49 11 55 23 14 39.7 59 140 2 49 1 27 49 22 25 48 59 8 49 24 44 -0.52 99 0 0 49 17 24 23 14 42.2 59 141 3 49 6 56 49 27 53 49 4 38 49 30 12 -0.52 100 0 0 49 22 34 23 14 44.8 59 143 4 49 12 7 49 33 2 49 9 49 49 35 21 -0.52 101 0 0 49 27 26 23 14 47.3 60 145 4 49 17 0 49 37 54 49 14 41 49 40 12 -0.52 102 0 0 49 32 0 23 14 49.9 60 147 5 49 21 34 49 42 27 49 19 16 49 44 45 -0.52 103 0 0 49 36 15 23 14 52.4 60 149 6 49 25 50 49 46 42 49 23 32 49 49 0 -0.52 104 0 0 49 40 12 23 14 55.0 60 150 6 49 29 47 49 50 38 49 27 30 49 52 57 -0.52 105 0 0 49 43 51 23 14 57.5 61 152 7 49 33 27 49 54 17 49 31 9 49 56 35 -0.52 106 0 0 49 47 12 23 15 0.1 61 154 8 49 36 48 49 57 37 49 34 30 49 59 55 -0.52 107 0 0 49 50 15 23 15 2.6 61 156 8 49 39 51 50 0 40 49 37 34 50 2 58 -0.52 108 0 0 49 53 0 23 15 5.2 61 158 9 49 42 36 50 3 24 49 40 19 50 5 42 -0.52 109 0 0 49 55 26 23 15 7.7 62 160 10 49 45 3 50 5 50 49 42 46 50 8 8 -0.52 110 0 0 49 57 35 23 15 10.3 62 162 10 49 47 12 50 7 59 49 44 55 50 10 17 -0.52 111 0 0 49 59 26 23 15 12.8 62 164 11 49 49 3 50 9 49 49 46 46 50 12 7 -0.52 112 0 0 50 0 58 23 15 15.4 62 166 12 49 50 36 50 11 22 49 48 19 50 13 39 -0.52 113 0 0 50 2 13 23 15 18.0 62 168 12 49 51 51 50 12 36 49 49 34 50 14 54 -0.52 114 0 0 50 3 10 23 15 20.5 62 170 13 49 52 48 50 13 33 49 50 31 50 15 51 -0.52 115 0 0 50 3 49 23 15 23.1 62 172 14 49 53 27 50 14 12 49 51 10 50 16 29 -0.52 116 0 0 50 4 10 23 15 25.6 62 174 14 49 53 48 50 14 33 49 51 31 50 16 50 -0.52 117 0 0 50 4 13 23 15 28.2 62 176 15 49 53 51 50 14 36 49 51 34 50 16 53 -0.52 118 0 0 50 3 58 23 15 30.8 63 178 15 49 53 36 50 14 21 49 51 19 50 16 39 -0.52 119 0 0 50 3 25 23 15 33.3 63 180 16 49 53 3 50 13 48 49 50 46 50 16 6 -0.52 120 0 0 50 2 34 23 15 35.9 63 182 17 49 52 12 50 12 58 49 49 55 50 15 15 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0 0 28 5 21 23 18 53.3 9 291 60 27 53 47 28 16 56 27 51 14 28 19 30 -0.57 -149 0 0 27 39 45 23 18 53.9 8 291 60 27 28 11 27 51 20 27 25 38 27 53 53 -0.57 -148 0 0 27 14 6 23 18 54.5 7 292 60 27 2 32 27 25 41 27 0 0 27 28 14 -0.58 -147 0 0 26 48 25 23 18 55.0 6 292 59 26 36 52 26 59 59 26 34 19 27 2 33 -0.59 -146 0 0 26 22 43 23 18 55.4 5 293 59 26 11 10 26 34 17 26 8 38 26 36 51 -0.61 -145 0 0 25 57 1 23 18 55.8 4 293 58 25 45 28 26 8 34 25 42 56 26 11 8 -0.63 -144 0 0 25 31 18 23 18 56.0 3 294 58 25 19 47 25 42 52 25 17 14 25 45 25 -0.66 -143 0 0 25 5 37 23 18 56.2 2 294 57 24 54 6 25 17 10 24 51 33 25 19 43 -0.74 -142 0 0 24 39 57 23 18 56.4 1 295 57 24 28 27 24 51 29 24 25 54 24 54 2 -0.96 -141 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 24 25 51 .. .. .. 24 28 24 .... Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.5 Data for the target star ------------------------ * name: UCAC4 564-026268 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 20 26.4994 DE: +22 38 05.192 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 20 26.4995 DE: +22 38 05.192 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.7 * B mag [mag]: 11.4 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1302) Werra asteroid class: approx. diameter [km]: 34 approx. diameter ["]: 0.017 distance from Earth [AU]: 2.72590 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#50 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): 0.023", 0.002", 89.175° remarks: * orbital elements for (1302)Werra : Mean anomaly = 352.7002912378 deg Arg. of pericenter = 353.4806577576 deg Long. of node = 90.1040979106 deg Inclination = 2.5962789001 deg Eccentricity = 0.1755304512 Semimajor axis = 3.1164714266 AU Perihelion dist = 2.5694357909 AU Mag: H = 11.02, G = 0.15 Epoch of elements : MJD 60560.96915833 TDT (2024 Sep 07.9692) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Feb11,1.21,2024,9,7,23.259801,0.007744,0.456720,15.905424,-0.259215,-0.005291,0.000179,-0.000001,0.000000 119.0650,22.6249,-169.47,5.59,False UCAC4 564-026268,6.34069424,22.6347757,11.37,10.70,10.34,0.1,0,,6.36542020,22.6248846,5.61,5.52,0,0,0 1302,Werra,16.30,34.136,2.7259,0,0,3.706,-0.84,,2.2,0 0,352.5267,2024,9,7,353.4807,90.1041,2.5963,0.17553,3.11647,2.56944,11.02,5.0,0.15 1.110,0.0233,0.0018,89,0.0019,Known errors,0.94,0,-1,-1 20240907_026268,60140.55 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:09 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org