IOTA/IOTA-ES occultation update for (2433) Sootiyo / TYC 9-01134-1 event on 2024 Sep 11, 09:54 UT Visible from Summary ------- On 2024 Sep 11 UT, the 13.2458678686735 km diameter asteroid (2433) Sootiyo will occult a 9.8 mag star in the constellation Pisces for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.58 mag to 15.35 mag (the magnitude of the asteroid) for at most 1.180 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: 76 * date and approx. time of event: 2024 Sep 11, 09:45 - 2024 Sep 11, 10:04 * geocentric midpoint of event [JD]: 2460564.91316208 * magnitude of target star: 9.78 * magnitude drop [mag]: 5.58 * estimated maximum duration [s]: 1.180 * Moon: 52 % sunlit, 108° distance * Sun: 160° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 14 * 1 sigma uncertainty interval [path widths]: +/- 0.74 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.018, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.003", 76°) * approx speed of asteroid's shadow [km/s]: 11.2909 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 9-01134-1 by 2433 Sootiyo on 2024 Sep 11 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 139 0 0 -30 5 4 10 4 14.9 0 84 -20 -30 1 23 -30 8 44 -29 55 56 -30 14 11 .... 140 0 0 -29 58 55 10 4 14.8 1 83 -21 -29 55 14 -30 2 36 -29 49 46 -30 8 3 -0.12 141 0 0 -29 52 10 10 4 14.6 2 83 -22 -29 48 29 -29 55 52 -29 43 1 -30 1 19 -0.13 142 0 0 -29 44 51 10 4 14.3 3 82 -23 -29 41 9 -29 48 33 -29 35 41 -29 54 1 -0.14 143 0 0 -29 36 56 10 4 13.8 4 82 -24 -29 33 14 -29 40 38 -29 27 45 -29 46 7 -0.14 144 0 0 -29 28 26 10 4 13.2 4 81 -25 -29 24 44 -29 32 8 -29 19 14 -29 37 37 -0.14 145 0 0 -29 19 20 10 4 12.5 5 81 -26 -29 15 37 -29 23 3 -29 10 7 -29 28 33 -0.14 146 0 0 -29 9 39 10 4 11.6 6 80 -26 -29 5 55 -29 13 22 -29 0 25 -29 18 52 -0.14 147 0 0 -28 59 21 10 4 10.6 7 80 -27 -28 55 38 -29 3 5 -28 50 7 -29 8 36 -0.14 148 0 0 -28 48 28 10 4 9.5 8 79 -28 -28 44 44 -28 52 12 -28 39 12 -28 57 44 -0.14 149 0 0 -28 36 59 10 4 8.2 9 79 -29 -28 33 14 -28 40 44 -28 27 42 -28 46 16 -0.14 150 0 0 -28 24 54 10 4 6.7 10 78 -30 -28 21 8 -28 28 39 -28 15 35 -28 34 12 -0.14 151 0 0 -28 12 12 10 4 5.1 11 78 -31 -28 8 26 -28 15 57 -28 2 52 -28 21 32 -0.14 152 0 0 -27 58 53 10 4 3.4 12 77 -32 -27 55 7 -28 2 40 -27 49 32 -28 8 15 -0.14 153 0 0 -27 44 58 10 4 1.5 12 77 -33 -27 41 11 -27 48 45 -27 35 35 -27 54 21 -0.14 154 0 0 -27 30 26 10 3 59.5 13 76 -34 -27 26 39 -27 34 14 -27 21 2 -27 39 51 -0.14 155 0 0 -27 15 17 10 3 57.3 14 76 -34 -27 11 29 -27 19 6 -27 5 51 -27 24 43 -0.14 156 0 0 -26 59 31 10 3 55.0 15 76 -35 -26 55 42 -27 3 20 -26 50 3 -27 8 59 -0.14 157 0 0 -26 43 8 10 3 52.5 16 75 -36 -26 39 18 -26 46 57 -26 33 38 -26 52 37 -0.14 158 0 0 -26 26 6 10 3 49.9 17 75 -37 -26 22 16 -26 29 57 -26 16 35 -26 35 37 -0.14 159 0 0 -26 8 28 10 3 47.1 18 74 -38 -26 4 37 -26 12 18 -25 58 54 -26 18 0 -0.14 160 0 0 -25 50 11 10 3 44.1 19 74 -39 -25 46 19 -25 54 2 -25 40 36 -25 59 45 -0.14 161 0 0 -25 31 16 10 3 41.0 20 73 -40 -25 27 23 -25 35 8 -25 21 39 -25 40 52 -0.14 162 0 0 -25 11 42 10 3 37.7 21 73 -41 -25 7 49 -25 15 36 -25 2 4 -25 21 21 -0.14 163 0 0 -24 51 31 10 3 34.3 22 73 -42 -24 47 37 -24 55 25 -24 41 50 -25 1 11 -0.14 164 0 0 -24 30 40 10 3 30.7 23 72 -43 -24 26 46 -24 34 35 -24 20 57 -24 40 23 -0.14 165 0 0 -24 9 11 10 3 26.9 24 72 -44 -24 5 16 -24 13 7 -23 59 26 -24 18 56 -0.14 166 0 0 -23 47 3 10 3 22.9 25 72 -45 -23 43 7 -23 51 0 -23 37 16 -23 56 51 -0.14 167 0 0 -23 24 16 10 3 18.8 26 71 -46 -23 20 19 -23 28 14 -23 14 27 -23 34 6 -0.14 168 0 0 -23 0 50 10 3 14.5 27 71 -47 -22 56 52 -23 4 49 -22 50 59 -23 10 42 -0.14 169 0 0 -22 36 45 10 3 10.0 28 70 -48 -22 32 46 -22 40 44 -22 26 51 -22 46 39 -0.14 170 0 0 -22 12 0 10 3 5.3 29 70 -49 -22 8 0 -22 16 0 -22 2 4 -22 21 56 -0.14 171 0 0 -21 46 36 10 3 0.5 30 70 -50 -21 42 35 -21 50 37 -21 36 37 -21 56 34 -0.14 172 0 0 -21 20 32 10 2 55.5 31 70 -51 -21 16 30 -21 24 34 -21 10 31 -21 30 33 -0.14 173 0 0 -20 53 49 10 2 50.2 32 69 -52 -20 49 46 -20 57 52 -20 43 45 -21 3 52 -0.14 174 0 0 -20 26 26 10 2 44.8 33 69 -53 -20 22 22 -20 30 30 -20 16 20 -20 36 32 -0.14 175 0 0 -19 58 24 10 2 39.2 34 69 -54 -19 54 19 -20 2 29 -19 48 15 -20 8 32 -0.14 176 0 0 -19 29 42 10 2 33.5 35 68 -55 -19 25 36 -19 33 48 -19 19 31 -19 39 53 -0.14 177 0 0 -19 0 20 10 2 27.5 36 68 -56 -18 56 13 -19 4 28 -18 50 7 -19 10 34 -0.14 178 0 0 -18 30 20 10 2 21.3 37 68 -57 -18 26 11 -18 34 28 -18 20 4 -18 40 35 -0.14 179 0 0 -17 59 40 10 2 14.9 38 68 -58 -17 55 30 -18 3 49 -17 49 21 -18 9 58 -0.14 -180 0 0 -17 28 20 10 2 8.4 39 68 -59 -17 24 10 -17 32 31 -17 17 59 -17 38 41 -0.14 -179 0 0 -16 56 22 10 2 1.6 40 67 -60 -16 52 11 -17 0 33 -16 45 58 -17 6 46 -0.14 -178 0 0 -16 23 45 10 1 54.7 41 67 -61 -16 19 33 -16 27 58 -16 13 19 -16 34 11 -0.14 -177 0 0 -15 50 30 10 1 47.5 42 67 -62 -15 46 16 -15 54 43 -15 40 1 -16 0 58 -0.14 -176 0 0 -15 16 36 10 1 40.2 43 67 -63 -15 12 22 -15 20 51 -15 6 5 -15 27 7 -0.14 -175 0 0 -14 42 5 10 1 32.6 44 67 -64 -14 37 49 -14 46 20 -14 31 31 -14 52 39 -0.14 -174 0 0 -14 6 56 10 1 24.9 45 67 -66 -14 2 39 -14 11 12 -13 56 19 -14 17 32 -0.14 -173 0 0 -13 31 10 10 1 16.9 46 67 -67 -13 26 52 -13 35 28 -13 20 31 -13 41 49 -0.14 -172 0 0 -12 54 47 10 1 8.8 48 67 -68 -12 50 29 -12 59 6 -12 44 6 -13 5 29 -0.14 -171 0 0 -12 17 49 10 1 0.5 49 67 -69 -12 13 29 -12 22 9 -12 7 5 -12 28 33 -0.14 -170 0 0 -11 40 15 10 0 52.0 50 67 -70 -11 35 54 -11 44 35 -11 29 28 -11 51 1 -0.14 -169 0 0 -11 2 6 10 0 43.2 51 67 -71 -10 57 44 -11 6 28 -10 51 17 -11 12 55 -0.14 -168 0 0 -10 23 23 10 0 34.3 52 67 -72 -10 19 0 -10 27 45 -10 12 31 -10 34 14 -0.14 -167 0 0 - 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34 0 0 47 19 52 9 45 39.5 0 278 19 47 23 33 47 16 11 47 29 1 47 10 44 -0.46 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 9-01134-1 * constellation : Pisces * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 00 29 45.4459 DE: +05 24 13.447 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 00 29 45.4460 DE: +05 24 13.448 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 9.8 * B mag [mag]: 10.1 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2433) Sootiyo asteroid class: approx. diameter [km]: 13 approx. diameter ["]: 0.011 distance from Earth [AU]: 1.62880 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 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): 0.019", 0.003", 76.079° remarks: * orbital elements for (2433)Sootiyo : Mean anomaly = 76.3720636736 deg Arg. of pericenter = 71.1236168430 deg Long. of node = 188.2132250226 deg Inclination = 10.3651301883 deg Eccentricity = 0.2211690783 Semimajor axis = 2.6064051093 AU Perihelion dist = 2.0299488936 AU Mag: H = 11.68, G = 0.15 Epoch of elements : MJD 60564.41316183 TDT (2024 Sep 11.4132) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Apr24,1.18,2024,9,11,9.915890,-0.094421,0.116951,-4.971691,-3.986953,-0.001672,-0.000916,0.000001,0.000000 -131.8904,5.5422,30.39,4.29,False TYC 9-01134-1,0.49595718,5.4037352,10.06,9.78,9.63,0.1,0,,0.51744630,5.5421829,5.58,5.28,0,0,0 2433,Sootiyo,15.35,13.364,1.6288,0,0,-1.798,-21.53,,0.8,0 0,76.2753,2024,9,11,71.1236,188.2132,10.3651,0.22117,2.60641,2.02995,11.67,5.0,0.15 1.741,0.0190,0.0027,76,0.0083,Known errors,1.04,0,-1,-1 20240911_1134-1,60140.55 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:19 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org