IOTA/IOTA-ES occultation update for (2489) Suvorov / UCAC4 329-176735 event on 2024 Nov 08, 08:04 UT Visible from Summary ------- On 2024 Nov 08 UT, the 21.0608819074214 km diameter asteroid (2489) Suvorov will occult a 11.2 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 6.60 mag to 17.79 mag (the magnitude of the asteroid) for at most 0.630 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 Nov 08, 08:01 - 2024 Nov 08, 08:07 * geocentric midpoint of event [JD]: 2460622.83639633 * magnitude of target star: 11.19 * magnitude drop [mag]: 6.60 * estimated maximum duration [s]: 0.630 * Moon: 41 % sunlit, 23° distance * Sun: 57° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 25 * 1 sigma uncertainty interval [path widths]: +/- 0.22 * 1 sigma uncertainty interval [seconds]: +/- 1.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.002", 87°) * approx speed of asteroid's shadow [km/s]: 35.6495 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 329-176735 by 2489 Suvorov on 2024 Nov 8 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 13 0 0 -27 30 57 8 1 41.5 0 117 49 -27 38 32 -27 23 22 -27 41 51 -27 20 4 .... 14 0 0 -27 58 40 8 1 41.6 1 117 50 -28 6 15 -27 51 6 -28 9 35 -27 47 47 0.41 15 0 0 -28 26 16 8 1 41.7 2 116 51 -28 33 51 -28 18 41 -28 37 10 -28 15 23 0.43 16 0 0 -28 53 42 8 1 41.9 3 116 52 -29 1 17 -28 46 8 -29 4 36 -28 42 49 0.44 17 0 0 -29 20 59 8 1 42.1 4 115 53 -29 28 33 -29 13 25 -29 31 52 -29 10 6 0.44 18 0 0 -29 48 5 8 1 42.4 5 115 53 -29 55 40 -29 40 32 -29 58 59 -29 37 13 0.44 19 0 0 -30 15 1 8 1 42.7 6 114 54 -30 22 35 -30 7 27 -30 25 54 -30 4 9 0.44 20 0 0 -30 41 45 8 1 43.1 7 114 55 -30 49 18 -30 34 11 -30 52 37 -30 30 53 0.45 21 0 0 -31 8 16 8 1 43.5 8 113 55 -31 15 50 -31 0 43 -31 19 8 -30 57 25 0.45 22 0 0 -31 34 35 8 1 44.0 9 113 56 -31 42 8 -31 27 2 -31 45 26 -31 23 45 0.45 23 0 0 -32 0 40 8 1 44.6 10 112 57 -32 8 13 -31 53 8 -32 11 31 -31 49 51 0.45 24 0 0 -32 26 32 8 1 45.2 11 112 57 -32 34 4 -32 19 0 -32 37 22 -32 15 43 0.45 25 0 0 -32 52 9 8 1 45.8 12 111 58 -32 59 40 -32 44 37 -33 2 58 -32 41 20 0.45 26 0 0 -33 17 30 8 1 46.5 13 111 59 -33 25 1 -33 10 0 -33 28 19 -33 6 43 0.45 27 0 0 -33 42 36 8 1 47.3 14 110 59 -33 50 7 -33 35 6 -33 53 24 -33 31 50 0.45 28 0 0 -34 7 27 8 1 48.1 15 109 60 -34 14 57 -33 59 57 -34 18 14 -33 56 41 0.45 29 0 0 -34 32 0 8 1 48.9 16 109 60 -34 39 30 -34 24 31 -34 42 47 -34 21 15 0.45 30 0 0 -34 56 17 8 1 49.8 17 108 61 -35 3 46 -34 48 49 -35 7 2 -34 45 33 0.45 31 0 0 -35 20 17 8 1 50.7 17 108 61 -35 27 45 -35 12 49 -35 31 1 -35 9 33 0.45 32 0 0 -35 43 58 8 1 51.7 18 107 62 -35 51 26 -35 36 31 -35 54 42 -35 33 16 0.45 33 0 0 -36 7 22 8 1 52.6 19 106 62 -36 14 48 -35 59 55 -36 18 4 -35 56 40 0.45 34 0 0 -36 30 27 8 1 53.7 20 106 63 -36 37 53 -36 23 1 -36 41 8 -36 19 47 0.45 35 0 0 -36 53 13 8 1 54.8 21 105 63 -37 0 38 -36 45 48 -37 3 53 -36 42 34 0.45 36 0 0 -37 15 40 8 1 55.9 22 104 63 -37 23 5 -37 8 16 -37 26 20 -37 5 2 0.45 37 0 0 -37 37 48 8 1 57.0 23 104 64 -37 45 12 -37 30 25 -37 48 26 -37 27 11 0.45 38 0 0 -37 59 36 8 1 58.2 24 103 64 -38 6 59 -37 52 14 -38 10 13 -37 49 1 0.45 39 0 0 -38 21 5 8 1 59.4 24 102 64 -38 28 27 -38 13 43 -38 31 40 -38 10 30 0.45 40 0 0 -38 42 13 8 2 0.7 25 102 64 -38 49 34 -38 34 52 -38 52 47 -38 31 39 0.45 41 0 0 -39 3 1 8 2 1.9 26 101 64 -39 10 21 -38 55 41 -39 13 34 -38 52 28 0.45 42 0 0 -39 23 28 8 2 3.2 27 100 65 -39 30 47 -39 16 9 -39 34 0 -39 12 57 0.45 43 0 0 -39 43 34 8 2 4.6 28 99 65 -39 50 53 -39 36 16 -39 54 5 -39 33 5 0.45 44 0 0 -40 3 20 8 2 5.9 29 99 65 -40 10 37 -39 56 3 -40 13 49 -39 52 52 0.45 45 0 0 -40 22 45 8 2 7.3 29 98 65 -40 30 1 -40 15 28 -40 33 12 -40 12 18 0.45 46 0 0 -40 41 48 8 2 8.7 30 97 65 -40 49 4 -40 34 33 -40 52 15 -40 31 22 0.45 47 0 0 -41 0 30 8 2 10.2 31 96 65 -41 7 45 -40 53 16 -41 10 56 -40 50 6 0.45 48 0 0 -41 18 51 8 2 11.6 32 96 65 -41 26 5 -41 11 38 -41 29 15 -41 8 28 0.45 49 0 0 -41 36 51 8 2 13.1 33 95 65 -41 44 4 -41 29 38 -41 47 13 -41 26 29 0.45 50 0 0 -41 54 29 8 2 14.6 33 94 64 -42 1 41 -41 47 17 -42 4 50 -41 44 8 0.45 51 0 0 -42 11 45 8 2 16.2 34 93 64 -42 18 56 -42 4 35 -42 22 5 -42 1 26 0.45 52 0 0 -42 28 40 8 2 17.7 35 92 64 -42 35 50 -42 21 30 -42 38 59 -42 18 23 0.45 53 0 0 -42 45 13 8 2 19.3 36 91 64 -42 52 23 -42 38 5 -42 55 30 -42 34 57 0.45 54 0 0 -43 1 25 8 2 20.8 36 91 64 -43 8 33 -42 54 17 -43 11 41 -42 51 10 0.45 55 0 0 -43 17 15 8 2 22.4 37 90 63 -43 24 22 -43 10 8 -43 27 29 -43 7 1 0.45 56 0 0 -43 32 43 8 2 24.1 38 89 63 -43 39 50 -43 25 37 -43 42 56 -43 22 31 0.45 57 0 0 -43 47 50 8 2 25.7 39 88 63 -43 54 55 -43 40 45 -43 58 2 -43 37 39 0.45 58 0 0 -44 2 35 8 2 27.4 39 87 63 -44 9 40 -43 55 31 -44 12 45 -43 52 25 0.45 59 0 0 -44 16 59 8 2 29.0 40 86 62 -44 24 2 -44 9 55 -44 27 8 -44 6 50 0.45 60 0 0 -44 31 0 8 2 30.7 41 85 62 -44 38 3 -44 23 58 -44 41 8 -44 20 53 0.45 61 0 0 -44 44 41 8 2 32.4 41 84 62 -44 51 43 -44 37 39 -44 54 47 -44 34 35 0.45 62 0 0 -44 58 0 8 2 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-16 31 9 -16 49 18 -16 27 53 1.70 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 329-176735 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 56 31.6859 DE: -24 12 15.143 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 56 31.6859 DE: -24 12 15.143 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.400,0.400) * V mag [mag]: 11.2 * B mag [mag]: 13.4 * Diameter [mas]: 0.70 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2489) Suvorov asteroid class: approx. diameter [km]: 21 approx. diameter ["]: 0.010 distance from Earth [AU]: 3.04540 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): 0.019", 0.002", 86.603° remarks: * orbital elements for (2489)Suvorov : Mean anomaly = 7.8457853982 deg Arg. of pericenter = 233.9711019722 deg Long. of node = 56.4385842241 deg Inclination = 1.7814251978 deg Eccentricity = 0.1537262287 Semimajor axis = 3.1084512174 AU Perihelion dist = 2.6306007345 AU Mag: H = 12.32, G = 0.15 Epoch of elements : MJD 60622.33639600 TDT (2024 Nov 08.3364) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522023Apr24,0.63,2024,11,8,8.073512,0.042092,-0.405397,20.010105,2.114780,0.004835,0.000408,-0.000001,0.000000 115.3985,-24.1729,54.84,-16.75,False UCAC4 329-176735,18.94213503,-24.2042063,13.36,11.19,10.02,0.7,4,,18.96711315,-24.1729109,6.60,7.32,0,0,0 2489,Suvorov,17.79,22.607,3.0454,0,0,4.223,6.11,,1.8,0 0,7.7853,2024,11,8,233.9711,56.4386,1.7814,0.15373,3.10845,2.63060,12.32,5.0,0.15 1.219,0.0187,0.0021,87,0.0022,Known errors,1.03,0,-1,-1 20241108_176735,60140.69 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:29 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org