IOTA/IOTA-ES occultation update for (1159) Granada / UCAC4 271-164444 event on 2024 Mar 07, 17:03 UT Visible from Summary ------- On 2024 Mar 07 UT, the 29.78 km diameter asteroid (1159) Granada 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 4.56 mag to 16.42 mag (the magnitude of the asteroid) for at most 1.050 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 Mar 07, 16:59 - 2024 Mar 07, 17:06 * geocentric midpoint of event [JD]: 2460377.21061021 * magnitude of target star: 11.88 * magnitude drop [mag]: 4.56 * estimated maximum duration [s]: 1.050 * Moon: 11 % sunlit, 35° distance * Sun: 73° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 31 * 1 sigma uncertainty interval [path widths]: +/- 0.19 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.001", 85°) * approx speed of asteroid's shadow [km/s]: 28.2827 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 271-164444 by 1159 Granada on 2024 Mar 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 119 0 0 - 9 0 17 16 59 42.8 0 126 -72 - 9 10 54 - 8 49 40 - 9 15 1 - 8 45 34 .... 120 0 0 - 9 44 26 16 59 42.9 2 126 -71 - 9 55 5 - 9 33 47 - 9 59 13 - 9 29 40 0.33 121 0 0 -10 28 53 16 59 43.1 3 126 -70 -10 39 35 -10 18 13 -10 43 44 -10 14 5 0.34 122 0 0 -11 13 38 16 59 43.4 4 126 -69 -11 24 22 -11 2 56 -11 28 31 -10 58 47 0.34 123 0 0 -11 58 39 16 59 43.8 5 125 -67 -12 9 24 -11 47 54 -12 13 35 -11 43 45 0.34 124 0 0 -12 43 53 16 59 44.4 7 125 -66 -12 54 40 -12 33 6 -12 58 51 -12 28 56 0.34 125 0 0 -13 29 19 16 59 45.0 8 125 -65 -13 40 9 -13 18 31 -13 44 20 -13 14 20 0.34 126 0 0 -14 14 56 16 59 45.8 9 125 -64 -14 25 47 -14 4 6 -14 29 59 -13 59 55 0.34 127 0 0 -15 0 41 16 59 46.7 10 125 -62 -15 11 33 -14 49 50 -15 15 46 -14 45 38 0.34 128 0 0 -15 46 33 16 59 47.6 12 124 -61 -15 57 26 -15 35 40 -16 1 40 -15 31 27 0.34 129 0 0 -16 32 29 16 59 48.7 13 124 -60 -16 43 24 -16 21 35 -16 47 38 -16 17 22 0.34 130 0 0 -17 18 28 16 59 49.9 14 124 -59 -17 29 24 -17 7 32 -17 33 38 -17 3 19 0.34 131 0 0 -18 4 27 16 59 51.2 15 123 -58 -18 15 25 -17 53 31 -18 19 39 -17 49 17 0.34 132 0 0 -18 50 26 16 59 52.6 16 123 -56 -19 1 24 -18 39 29 -19 5 39 -18 35 14 0.34 133 0 0 -19 36 21 16 59 54.1 18 123 -55 -19 47 20 -19 25 23 -19 51 35 -19 21 9 0.34 134 0 0 -20 22 11 16 59 55.7 19 122 -54 -20 33 11 -20 11 13 -20 37 26 -20 6 58 0.34 135 0 0 -21 7 55 16 59 57.3 20 122 -53 -21 18 55 -20 56 55 -21 23 10 -20 52 41 0.34 136 0 0 -21 53 29 16 59 59.1 21 121 -52 -22 4 29 -21 42 29 -22 8 45 -21 38 14 0.34 137 0 0 -22 38 52 17 0 1.0 22 121 -50 -22 49 53 -22 27 53 -22 54 9 -22 23 37 0.34 138 0 0 -23 24 3 17 0 2.9 24 120 -49 -23 35 4 -23 13 3 -23 39 20 -23 8 48 0.34 139 0 0 -24 8 59 17 0 4.9 25 120 -48 -24 20 0 -23 58 0 -24 24 16 -23 53 44 0.34 140 0 0 -24 53 39 17 0 7.0 26 119 -47 -25 4 40 -24 42 40 -25 8 55 -24 38 25 0.34 141 0 0 -25 38 1 17 0 9.2 27 119 -46 -25 49 1 -25 27 2 -25 53 17 -25 22 47 0.34 142 0 0 -26 22 3 17 0 11.5 28 118 -44 -26 33 3 -26 11 4 -26 37 18 -26 6 50 0.34 143 0 0 -27 5 44 17 0 13.8 29 118 -43 -27 16 43 -26 54 46 -27 20 58 -26 50 31 0.34 144 0 0 -27 49 1 17 0 16.2 31 117 -42 -27 59 59 -27 38 4 -28 4 14 -27 33 50 0.34 145 0 0 -28 31 54 17 0 18.7 32 117 -41 -28 42 52 -28 20 58 -28 47 6 -28 16 44 0.34 146 0 0 -29 14 21 17 0 21.2 33 116 -40 -29 25 18 -29 3 26 -29 29 32 -28 59 13 0.34 147 0 0 -29 56 21 17 0 23.7 34 115 -39 -30 7 17 -29 45 27 -30 11 30 -29 41 14 0.34 148 0 0 -30 37 53 17 0 26.3 35 115 -38 -30 48 46 -30 27 0 -30 53 0 -30 22 47 0.34 149 0 0 -31 18 54 17 0 29.0 36 114 -37 -31 29 46 -31 8 2 -31 33 59 -31 3 50 0.34 150 0 0 -31 59 24 17 0 31.7 37 113 -35 -32 10 15 -31 48 34 -32 14 27 -31 44 23 0.34 151 0 0 -32 39 23 17 0 34.5 38 112 -34 -32 50 12 -32 28 34 -32 54 24 -32 24 23 0.34 152 0 0 -33 18 48 17 0 37.3 39 112 -33 -33 29 35 -33 8 1 -33 33 46 -33 3 51 0.34 153 0 0 -33 57 39 17 0 40.1 40 111 -32 -34 8 25 -33 46 54 -34 12 35 -33 42 45 0.34 154 0 0 -34 35 55 17 0 42.9 41 110 -31 -34 46 39 -34 25 12 -34 50 49 -34 21 4 0.34 155 0 0 -35 13 36 17 0 45.8 42 109 -30 -35 24 18 -35 2 55 -35 28 27 -34 58 47 0.34 156 0 0 -35 50 41 17 0 48.7 43 108 -29 -36 1 20 -35 40 2 -36 5 28 -35 35 55 0.34 157 0 0 -36 27 8 17 0 51.6 44 107 -28 -36 37 46 -36 16 32 -36 41 53 -36 12 25 0.34 158 0 0 -37 2 59 17 0 54.6 45 106 -27 -37 13 34 -36 52 24 -37 17 40 -36 48 19 0.34 159 0 0 -37 38 11 17 0 57.5 46 105 -26 -37 48 44 -37 27 39 -37 52 49 -37 23 34 0.34 160 0 0 -38 12 45 17 1 0.5 47 105 -25 -38 23 16 -38 2 15 -38 27 20 -37 58 12 0.34 161 0 0 -38 46 41 17 1 3.5 48 103 -24 -38 57 9 -38 36 13 -39 1 12 -38 32 11 0.34 162 0 0 -39 19 57 17 1 6.5 49 102 -23 -39 30 23 -39 9 33 -39 34 25 -39 5 31 0.34 163 0 0 -39 52 35 17 1 9.4 50 101 -22 -40 2 58 -39 42 13 -40 6 59 -39 38 12 0.34 164 0 0 -40 24 33 17 1 12.4 50 100 -21 -40 34 54 -40 14 14 -40 38 54 -40 10 14 0.34 165 0 0 -40 55 53 17 1 15.4 51 99 -20 -41 6 10 -40 45 36 -41 10 9 -40 41 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45 -34 56 18 -34 26 37 0.36 - 59 0 0 -34 3 28 17 6 35.0 21 240 58 -34 14 12 -33 52 44 -34 18 22 -33 48 35 0.36 - 58 0 0 -33 24 55 17 6 36.5 20 239 58 -33 35 41 -33 14 9 -33 39 51 -33 9 59 0.36 - 57 0 0 -32 45 48 17 6 38.0 18 239 58 -32 56 36 -32 35 1 -33 0 47 -32 30 50 0.36 - 56 0 0 -32 6 9 17 6 39.4 17 238 58 -32 16 58 -31 55 20 -32 21 10 -31 51 9 0.36 - 55 0 0 -31 25 58 17 6 40.7 16 238 58 -31 36 49 -31 15 7 -31 41 1 -31 10 56 0.37 - 54 0 0 -30 45 16 17 6 41.9 15 237 58 -30 56 9 -30 34 25 -31 0 21 -30 30 13 0.37 - 53 0 0 -30 4 5 17 6 43.1 14 237 58 -30 14 59 -29 53 12 -30 19 12 -29 49 0 0.37 - 52 0 0 -29 22 26 17 6 44.2 13 236 58 -29 33 21 -29 11 32 -29 37 35 -29 7 19 0.37 - 51 0 0 -28 40 20 17 6 45.2 12 236 58 -28 51 16 -28 29 25 -28 55 30 -28 25 12 0.38 - 50 0 0 -27 57 48 17 6 46.1 11 235 58 -28 8 45 -27 46 52 -28 12 59 -27 42 39 0.38 - 49 0 0 -27 14 52 17 6 47.0 10 235 57 -27 25 50 -27 3 56 -27 30 4 -26 59 42 0.38 - 48 0 0 -26 31 34 17 6 47.7 8 234 57 -26 42 32 -26 20 36 -26 46 47 -26 16 22 0.39 - 47 0 0 -25 47 54 17 6 48.4 7 234 57 -25 58 52 -25 36 56 -26 3 7 -25 32 42 0.40 - 46 0 0 -25 3 54 17 6 49.0 6 233 56 -25 14 53 -24 52 56 -25 19 8 -24 48 42 0.41 - 45 0 0 -24 19 36 17 6 49.5 5 233 56 -24 30 35 -24 8 38 -24 34 51 -24 4 24 0.43 - 44 0 0 -23 35 3 17 6 49.9 4 232 56 -23 46 2 -23 24 4 -23 50 17 -23 19 50 0.45 - 43 0 0 -22 50 14 17 6 50.1 3 232 55 -23 1 13 -22 39 16 -23 5 28 -22 35 2 0.50 - 42 0 0 -22 5 13 17 6 50.3 1 232 55 -22 16 12 -21 54 15 -22 20 27 -21 50 1 0.63 - 41 0 0 -21 20 1 17 6 50.4 0 231 54 -21 30 59 -21 9 3 -21 35 14 -21 4 49 1.93 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.2 Data for the target star ------------------------ * name: UCAC4 271-164444 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 21 16.7325 DE: -35 48 52.806 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 21 16.7325 DE: -35 48 52.806 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.9 * B mag [mag]: 12.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1159) Granada asteroid class: approx. diameter [km]: 30 approx. diameter ["]: 0.017 distance from Earth [AU]: 2.36590 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#52 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): 0.014", 0.001", 84.8° remarks: * orbital elements for (1159)Granada : Mean anomaly = 314.2912768012 deg Arg. of pericenter = 312.3646803365 deg Long. of node = 347.8416196758 deg Inclination = 13.0343286453 deg Eccentricity = 0.0583531535 Semimajor axis = 2.3798667693 AU Perihelion dist = 2.2409940384 AU Mag: H = 11.61, G = 0.15 Epoch of elements : MJD 60376.71061000 TDT (2024 Mar 07.7106) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522023Apr24,1.05,2024,3,7,17.054645,-0.042501,-0.314046,15.816136,-2.164189,-0.005369,-0.000578,-0.000001,0.000000 -146.0016,-35.8032,-73.11,-4.89,False UCAC4 271-164444,18.35464786,-35.8146685,12.64,11.88,11.47,0.0,0,,18.38151853,-35.8031954,4.55,4.51,0,0,0 1159,Granada,16.42,29.780,2.3659,0,0,4.833,-8.04,,1.4,0 0,314.1005,2024,3,7,312.3647,347.8416,13.0343,0.05835,2.37987,2.24099,11.61,5.0,0.15 1.194,0.0140,0.0012,85,0.0034,Known errors,0.86,0,-1,-1 20240307_164444,60139.22 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 05:14 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org