IOTA/IOTA-ES occultation update for (754) Malabar / TYC 1030-04193-1 event on 2024 Jul 13, 07:10 UT Visible from Summary ------- On 2024 Jul 13 UT, the 89.3293362327241 km diameter asteroid (754) Malabar will occult a 9.1 mag star in the constellation Aquila for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.07 mag to 14.15 mag (the magnitude of the asteroid) for at most 6.750 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 Jul 13, 07:04 - 2024 Jul 13, 07:15 * geocentric midpoint of event [JD]: 2460504.79873784 * magnitude of target star: 9.09 * magnitude drop [mag]: 5.07 * estimated maximum duration [s]: 6.750 * Moon: 44 % sunlit, 90° distance * Sun: 145° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 142 * 1 sigma uncertainty interval [path widths]: +/- 0.13 * 1 sigma uncertainty interval [seconds]: +/- 1.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.006", 85°) * approx speed of asteroid's shadow [km/s]: 13.2493 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1030-04193-1 by 754 Malabar on 2024 Jul 13 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 -177 0 0 .. .. .... .. .. .. .. .. .. -69 8 6 .. .. .. -68 56 25 .. .. .. .... -176 0 0 -69 40 13 7 15 11.7 0 56 -28 -68 53 59 .. .. .. -68 42 15 .. .. .. .... -175 0 0 -69 25 57 7 15 11.6 0 55 -28 -68 39 30 -70 13 21 -68 27 43 .. .. .. 0.31 -174 0 0 -69 11 19 7 15 11.6 1 54 -28 -68 24 38 -69 58 57 -68 12 47 -70 11 22 0.75 -173 0 0 -68 56 17 7 15 11.5 1 53 -29 -68 9 24 -69 44 10 -67 57 30 -69 56 39 0.91 -172 0 0 -68 40 53 7 15 11.3 2 52 -29 -67 53 46 -69 28 59 -67 41 48 -69 41 32 0.99 -171 0 0 -68 25 4 7 15 11.1 2 51 -30 -67 37 45 -69 13 25 -67 25 44 -69 26 1 1.04 -170 0 0 -68 8 52 7 15 10.8 3 50 -30 -67 21 20 -68 57 27 -67 9 16 -69 10 6 1.08 -169 0 0 -67 52 16 7 15 10.5 3 50 -31 -67 4 31 -68 41 4 -66 52 24 -68 53 47 1.10 -168 0 0 -67 35 15 7 15 10.2 4 49 -31 -66 47 18 -68 24 16 -66 35 8 -68 37 3 1.12 -167 0 0 -67 17 50 7 15 9.7 4 48 -31 -66 29 40 -68 7 4 -66 17 27 -68 19 54 1.13 -166 0 0 -67 0 0 7 15 9.2 5 47 -32 -66 11 38 -67 49 27 -65 59 22 -68 2 20 1.15 -165 0 0 -66 41 45 7 15 8.7 5 46 -32 -65 53 12 -67 31 24 -65 40 53 -67 44 21 1.16 -164 0 0 -66 23 5 7 15 8.1 6 45 -33 -65 34 20 -67 12 55 -65 21 59 -67 25 56 1.17 -163 0 0 -66 3 59 7 15 7.4 6 44 -33 -65 15 4 -66 54 2 -65 2 40 -67 7 5 1.17 -162 0 0 -65 44 28 7 15 6.6 7 43 -34 -64 55 23 -66 34 42 -64 42 56 -66 47 48 1.18 -161 0 0 -65 24 32 7 15 5.7 7 42 -34 -64 35 16 -66 14 56 -64 22 47 -66 28 6 1.18 -160 0 0 -65 4 10 7 15 4.8 8 41 -35 -64 14 45 -65 54 45 -64 2 14 -66 7 57 1.19 -159 0 0 -64 43 23 7 15 3.8 8 40 -35 -63 53 49 -65 34 7 -63 41 15 -65 47 22 1.19 -158 0 0 -64 22 10 7 15 2.7 9 39 -36 -63 32 28 -65 13 4 -63 19 52 -65 26 21 1.20 -157 0 0 -64 0 32 7 15 1.5 9 39 -37 -63 10 41 -64 51 35 -62 58 4 -65 4 54 1.20 -156 0 0 -63 38 29 7 15 0.3 10 38 -37 -62 48 31 -64 29 39 -62 35 51 -64 43 1 1.20 -155 0 0 -63 16 1 7 14 58.9 10 37 -38 -62 25 56 -64 7 18 -62 13 14 -64 20 42 1.21 -154 0 0 -62 53 7 7 14 57.4 11 36 -38 -62 2 56 -63 44 32 -61 50 13 -63 57 57 1.21 -153 0 0 -62 29 50 7 14 55.9 12 35 -39 -61 39 33 -63 21 20 -61 26 48 -63 34 48 1.21 -152 0 0 -62 6 8 7 14 54.2 12 34 -39 -61 15 45 -62 57 44 -61 3 0 -63 11 12 1.21 -151 0 0 -61 42 1 7 14 52.4 13 33 -40 -60 51 35 -62 33 42 -60 38 48 -62 47 12 1.22 -150 0 0 -61 17 32 7 14 50.5 13 32 -41 -60 27 1 -62 9 17 -60 14 14 -62 22 48 1.22 -149 0 0 -60 52 39 7 14 48.5 14 31 -41 -60 2 5 -61 44 27 -59 49 17 -61 57 59 1.22 -148 0 0 -60 27 23 7 14 46.4 15 30 -42 -59 36 47 -61 19 14 -59 23 59 -61 32 47 1.22 -147 0 0 -60 1 46 7 14 44.1 15 29 -43 -59 11 8 -60 53 38 -58 58 19 -61 7 12 1.22 -146 0 0 -59 35 46 7 14 41.8 16 28 -43 -58 45 8 -60 27 40 -58 32 18 -60 41 14 1.22 -145 0 0 -59 9 26 7 14 39.3 16 28 -44 -58 18 47 -60 1 20 -58 5 57 -60 14 54 1.23 -144 0 0 -58 42 45 7 14 36.7 17 27 -45 -57 52 7 -59 34 39 -57 39 17 -59 48 13 1.23 -143 0 0 -58 15 45 7 14 33.9 18 26 -45 -57 25 8 -59 7 38 -57 12 18 -59 21 11 1.23 -142 0 0 -57 48 26 7 14 31.0 18 25 -46 -56 57 50 -58 40 17 -56 45 1 -58 53 50 1.23 -141 0 0 -57 20 49 7 14 28.0 19 24 -47 -56 30 16 -58 12 37 -56 17 27 -58 26 9 1.23 -140 0 0 -56 52 55 7 14 24.9 20 23 -47 -56 2 24 -57 44 40 -55 49 37 -57 58 11 1.23 -139 0 0 -56 24 44 7 14 21.6 20 22 -48 -55 34 17 -57 16 25 -55 21 31 -57 29 55 1.23 -138 0 0 -55 56 18 7 14 18.2 21 21 -49 -55 5 56 -56 47 54 -54 53 10 -57 1 23 1.23 -137 0 0 -55 27 37 7 14 14.6 22 20 -50 -54 37 20 -56 19 8 -54 24 36 -56 32 35 1.23 -136 0 0 -54 58 43 7 14 11.0 22 19 -50 -54 8 31 -55 50 8 -53 55 49 -56 3 34 1.23 -135 0 0 -54 29 36 7 14 7.1 23 18 -51 -53 39 31 -55 20 55 -53 26 50 -55 34 18 1.24 -134 0 0 -54 0 18 7 14 3.1 24 17 -52 -53 10 20 -54 51 29 -52 57 40 -55 4 51 1.24 -133 0 0 -53 30 49 7 13 59.0 24 16 -53 -52 40 59 -54 21 53 -52 28 21 -54 35 12 1.24 -132 0 0 -53 1 11 7 13 54.8 25 15 -53 -52 11 28 -53 52 6 -51 58 53 -54 5 24 1.24 -131 0 0 -52 31 25 7 13 50.4 25 14 -54 -51 41 51 -53 22 11 -51 29 17 -53 35 26 1.24 -130 0 0 -52 1 32 7 13 45.8 26 13 -55 -51 12 6 -52 52 8 -50 59 34 -53 5 20 1.24 -129 0 0 -51 31 32 7 13 41.2 27 12 -56 -50 42 16 -52 21 58 -50 29 47 -52 35 8 1.24 -128 0 0 -51 1 28 7 13 36.4 27 11 -56 -50 12 21 -51 51 43 -49 59 54 -52 4 50 1.24 -127 0 0 -50 31 19 7 13 31.4 28 10 -57 -49 42 23 -51 21 24 -49 29 59 -51 34 28 1.24 -126 0 0 -50 1 8 7 13 26.3 28 9 -58 -49 12 23 -50 51 2 -49 0 1 -51 4 3 1.24 -125 0 0 -49 30 56 7 13 21.1 29 8 -59 -48 42 21 -50 20 37 -48 30 2 -50 33 35 1.24 -124 0 0 -49 0 43 7 13 15.8 30 7 -59 -48 12 19 -49 50 12 -48 0 3 -50 3 7 1.24 -123 0 0 -48 30 31 7 13 10.3 30 6 -60 -47 42 19 -49 19 48 -47 30 5 -49 32 39 1.24 -122 0 0 -48 0 20 7 13 4.7 31 5 -61 -47 12 20 -48 49 25 -47 0 10 -49 2 13 1.24 -121 0 0 -47 30 13 7 12 59.0 31 4 -62 -46 42 25 -48 19 5 -46 30 18 -48 31 49 1.24 -120 0 0 -47 0 10 7 12 53.2 32 3 -63 -46 12 34 -47 48 48 -46 0 30 -48 1 29 1.24 -119 0 0 -46 30 12 7 12 47.3 32 2 -63 -45 42 48 -47 18 37 -45 30 47 -47 31 14 1.24 -118 0 0 -46 0 20 7 12 41.2 33 0 -64 -45 13 9 -46 48 32 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27 -29 38 26 1.77 - 32 0 0 .. .. .... .. .. .. .. .. .. -28 20 10 .. .. .. -28 10 5 .. .. .. .... Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.2 Data for the target star ------------------------ * name: TYC 1030-04193-1 * constellation : Aquila * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 47 29.4174 DE: +11 10 57.303 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 47 29.4174 DE: +11 10 57.304 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.1 * B mag [mag]: 9.2 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (754) Malabar asteroid class: approx. diameter [km]: 89 approx. diameter ["]: 0.055 distance from Earth [AU]: 2.24280 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#117 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): 0.016", 0.006", 84.74° remarks: * orbital elements for (754)Malabar : Mean anomaly = 160.4352703558 deg Arg. of pericenter = 302.9330275225 deg Long. of node = 179.9033500882 deg Inclination = 24.5420519198 deg Eccentricity = 0.0512923716 Semimajor axis = 2.9875722786 AU Perihelion dist = 2.8343326112 AU Mag: H = 9.24, G = 0.15 Epoch of elements : MJD 60504.29873812 TDT (2024 Jul 13.2987) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1172023Apr24,6.75,2024,7,13,7.169708,0.286197,-0.722459,-6.952575,-2.754360,0.001025,-0.003041,0.000001,0.000000 -117.0423,11.2096,73.92,21.74,False TYC 1030-04193-1,18.79150483,11.1825840,9.20,9.09,9.03,0.1,0,,18.81102486,11.2095607,5.07,4.68,0,0,0 754,Malabar,14.15,89.492,2.2428,0,0,-1.852,-10.80,,4.6,0 0,160.3783,2024,7,13,302.9330,179.9034,24.5421,0.05129,2.98757,2.83433,9.24,5.0,0.15 1.129,0.0160,0.0057,85,0.0071,Known errors,0.97,0,-1,-1 20240713_4193-1,60140.20 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 04:45 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org