IOTA/IOTA-ES occultation update for (3024) Hainan / TYC 7940-00132-1 event on 2024 Jun 27, 06:15 UT Visible from Summary ------- On 2024 Jun 27 UT, the 37.48 km diameter asteroid (3024) Hainan will occult a 10.1 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 5.88 mag to 15.95 mag (the magnitude of the asteroid) for at most 3.060 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: 95 * date and approx. time of event: 2024 Jun 27, 06:06 - 2024 Jun 27, 06:23 * geocentric midpoint of event [JD]: 2460488.76043763 * magnitude of target star: 10.07 * magnitude drop [mag]: 5.88 * estimated maximum duration [s]: 3.060 * Moon: 69 % sunlit, 56° distance * Sun: 155° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 38 * 1 sigma uncertainty interval [path widths]: +/- 0.45 * 1 sigma uncertainty interval [seconds]: +/- 3.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.027, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.027", 0.004", 84°) * approx speed of asteroid's shadow [km/s]: 12.2574 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7940-00132-1 by 3024 Hainan on 2024 Jun 27 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 175 0 0 -20 46 28 6 23 41.4 1 136 -8 -20 31 58 -21 0 58 -20 19 5 -21 13 51 .... 176 0 0 -21 43 25 6 23 41.0 2 135 -9 -21 29 0 -21 57 49 -21 16 12 -22 10 38 0.09 177 0 0 -22 39 18 6 23 40.4 4 135 -11 -22 24 59 -22 53 37 -22 12 16 -23 6 21 0.06 178 0 0 -23 34 7 6 23 39.5 5 134 -12 -23 19 53 -23 48 20 -23 7 15 -24 0 59 0.05 179 0 0 -24 27 50 6 23 38.4 6 134 -13 -24 13 42 -24 41 57 -24 1 8 -24 54 31 0.04 -180 0 0 -25 20 26 6 23 37.0 7 134 -14 -25 6 24 -25 34 29 -24 53 56 -25 46 57 0.04 -179 0 0 -26 11 57 6 23 35.4 9 133 -15 -25 58 0 -26 25 53 -25 45 37 -26 38 17 0.03 -178 0 0 -27 2 20 6 23 33.6 10 133 -16 -26 48 30 -27 16 11 -26 36 12 -27 28 29 0.03 -177 0 0 -27 51 37 6 23 31.6 11 132 -17 -27 37 52 -28 5 21 -27 25 39 -28 17 34 0.03 -176 0 0 -28 39 46 6 23 29.4 12 132 -18 -28 26 7 -28 53 25 -28 13 59 -29 5 33 0.03 -175 0 0 -29 26 48 6 23 27.1 13 131 -19 -29 13 15 -29 40 21 -29 1 13 -29 52 24 0.03 -174 0 0 -30 12 44 6 23 24.5 15 131 -21 -29 59 17 -30 26 11 -29 47 20 -30 38 9 0.03 -173 0 0 -30 57 34 6 23 21.8 16 130 -22 -30 44 13 -31 10 55 -30 32 21 -31 22 47 0.03 -172 0 0 -31 41 17 6 23 19.0 17 130 -23 -31 28 2 -31 54 33 -31 16 15 -32 6 20 0.03 -171 0 0 -32 23 56 6 23 16.0 18 129 -24 -32 10 46 -32 37 6 -31 59 5 -32 48 47 0.03 -170 0 0 -33 5 30 6 23 12.9 19 129 -24 -32 52 26 -33 18 33 -32 40 49 -33 30 10 0.03 -169 0 0 -33 45 59 6 23 9.6 20 128 -25 -33 33 1 -33 58 57 -33 21 30 -34 10 29 0.03 -168 0 0 -34 25 26 6 23 6.2 21 128 -26 -34 12 33 -34 38 18 -34 1 7 -34 49 45 0.03 -167 0 0 -35 3 49 6 23 2.8 22 127 -27 -34 51 3 -35 16 36 -34 39 41 -35 27 58 0.03 -166 0 0 -35 41 12 6 22 59.2 23 126 -28 -35 28 30 -35 53 53 -35 17 14 -36 5 10 0.03 -165 0 0 -36 17 33 6 22 55.5 24 126 -29 -36 4 57 -36 30 9 -35 53 46 -36 41 21 0.03 -164 0 0 -36 52 55 6 22 51.8 25 125 -30 -36 40 24 -37 5 25 -36 29 17 -37 16 33 0.03 -163 0 0 -37 27 17 6 22 48.0 26 125 -31 -37 14 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28 34 10 59 10 11 41 38 10 46 6 0.03 - 3 0 0 12 15 24 6 6 25.3 7 224 3 12 30 2 12 0 45 12 43 3 11 47 44 0.04 - 2 0 0 13 16 12 6 6 24.0 5 224 4 13 30 47 13 1 37 13 43 44 12 48 40 0.05 - 1 0 0 14 16 14 6 6 23.0 4 225 5 14 30 45 14 1 44 14 43 39 13 48 50 0.06 0 0 0 15 15 29 6 6 22.3 3 225 7 15 29 55 15 1 2 15 42 45 14 48 12 0.09 1 0 0 16 13 52 6 6 21.9 1 225 8 16 28 14 15 59 30 16 41 0 15 46 43 0.18 2 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 16 44 23 .... Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 14.4 Data for the target star ------------------------ * name: TYC 7940-00132-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 39 52.4839 DE: -42 22 51.965 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 39 52.4841 DE: -42 22 51.967 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.1 * B mag [mag]: 10.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3024) Hainan asteroid class: approx. diameter [km]: 37 approx. diameter ["]: 0.022 distance from Earth [AU]: 2.35600 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#51 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): 0.027", 0.004", 84.4° remarks: * orbital elements for (3024)Hainan : Mean anomaly = 290.8748283610 deg Arg. of pericenter = 342.0392188303 deg Long. of node = 27.3687106503 deg Inclination = 14.8450571723 deg Eccentricity = 0.1310769102 Semimajor axis = 3.4125401813 AU Perihelion dist = 2.9652349584 AU Mag: H = 10.97, G = 0.15 Epoch of elements : MJD 60488.26043829 TDT (2024 Jun 27.2604) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#512023Apr24,3.06,2024,6,27,6.250503,0.015888,-0.033997,-6.251542,-2.963521,-0.001700,0.001648,0.000001,0.000000 -74.2095,-42.3239,87.03,23.30,False TYC 7940-00132-1,19.66457887,-42.3811013,10.34,10.07,9.92,0.0,0,,19.69346030,-42.3239116,5.89,5.58,0,0,0 3024,Hainan,15.95,37.480,2.3560,0,0,-2.104,-11.06,,2.2,0 0,290.8341,2024,6,27,342.0392,27.3687,14.8451,0.13108,3.41254,2.96523,10.96,5.0,0.15 1.444,0.0270,0.0037,84,0.0098,Known errors,1.07,0,-1,-1 20240627_0132-1,60139.40 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 09:42 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org