IOTA/IOTA-ES occultation update for (1202) Marina / UCAC4 320-135923 event on 2024 Oct 16, 19:34 UT Visible from Summary ------- On 2024 Oct 16 UT, the 60.8065030051083 km diameter asteroid (1202) Marina will occult a 9.8 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 6.87 mag to 16.71 mag (the magnitude of the asteroid) for at most 2.370 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 Oct 16, 19:30 - 2024 Oct 16, 19:38 * geocentric midpoint of event [JD]: 2460600.31565825 * magnitude of target star: 9.84 * magnitude drop [mag]: 6.87 * estimated maximum duration [s]: 2.370 * Moon: 99 % sunlit, 103° distance * Sun: 68° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 65 * 1 sigma uncertainty interval [path widths]: +/- 0.17 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.003", 94°) * approx speed of asteroid's shadow [km/s]: 26.3904 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 320-135923 by 1202 Marina on 2024 Oct 16 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 -130 0 0 12 18 13 19 30 40.5 0 117 65 11 58 33 .. .. .. 11 52 1 .. .. .. .... -129 0 0 11 48 36 19 30 40.5 1 117 65 11 28 57 12 8 18 11 22 26 12 14 51 -0.02 -128 0 0 11 19 4 19 30 40.7 2 117 66 10 59 25 11 38 44 10 52 54 11 45 17 -0.14 -127 0 0 10 49 36 19 30 40.9 3 117 67 10 29 59 11 9 15 10 23 28 11 15 48 -0.18 -126 0 0 10 20 15 19 30 41.2 5 117 68 10 0 39 10 39 53 9 54 8 10 46 25 -0.21 -125 0 0 9 51 0 19 30 41.7 6 118 69 9 31 25 10 10 37 9 24 56 10 17 8 -0.22 -124 0 0 9 21 53 19 30 42.2 7 118 70 9 2 20 9 41 29 8 55 50 9 48 0 -0.23 -123 0 0 8 52 55 19 30 42.8 8 118 71 8 33 23 9 12 29 8 26 54 9 18 59 -0.24 -122 0 0 8 24 6 19 30 43.5 9 118 71 8 4 35 8 43 38 7 58 7 8 50 8 -0.24 -121 0 0 7 55 27 19 30 44.3 10 118 72 7 35 58 8 14 58 7 29 30 8 21 27 -0.25 -120 0 0 7 26 58 19 30 45.2 11 118 73 7 7 31 7 46 28 7 1 4 7 52 57 -0.25 -119 0 0 6 58 42 19 30 46.1 12 119 74 6 39 16 7 18 9 6 32 49 7 24 38 -0.25 -118 0 0 6 30 37 19 30 47.2 13 119 74 6 11 14 6 50 3 6 4 47 6 56 31 -0.25 -117 0 0 6 2 46 19 30 48.3 14 119 75 5 43 24 6 22 10 5 36 59 6 28 37 -0.26 -116 0 0 5 35 9 19 30 49.6 15 119 75 5 15 49 5 54 31 5 9 24 6 0 58 -0.26 -115 0 0 5 7 46 19 30 50.9 17 119 76 4 48 28 5 27 6 4 42 3 5 33 32 -0.26 -114 0 0 4 40 38 19 30 52.3 18 119 76 4 21 22 4 59 56 4 14 58 5 6 22 -0.26 -113 0 0 4 13 46 19 30 53.8 19 119 76 3 54 32 4 33 2 3 48 9 4 39 27 -0.26 -112 0 0 3 47 11 19 30 55.4 20 119 76 3 27 58 4 6 25 3 21 36 4 12 49 -0.26 -111 0 0 3 20 52 19 30 57.1 21 120 76 3 1 42 3 40 5 2 55 21 3 46 28 -0.26 -110 0 0 2 54 52 19 30 58.9 22 120 76 2 35 44 3 14 2 2 29 23 3 20 24 -0.26 -109 0 0 2 29 10 19 31 0.7 23 120 76 2 10 4 2 48 18 2 3 44 2 54 39 -0.26 -108 0 0 2 3 47 19 31 2.6 24 120 76 1 44 43 2 22 52 1 38 23 2 29 13 -0.27 -107 0 0 1 38 43 19 31 4.6 25 120 76 1 19 41 1 57 46 1 13 23 2 4 6 -0.27 -106 0 0 1 13 59 19 31 6.7 26 120 75 0 55 0 1 33 0 0 48 42 1 39 20 -0.27 -105 0 0 0 49 36 19 31 8.8 27 120 75 0 30 39 1 8 35 0 24 22 1 14 54 -0.27 -104 0 0 0 25 34 19 31 11.1 29 120 74 0 6 39 0 44 31 0 0 23 0 50 49 -0.27 -103 0 0 0 1 54 19 31 13.4 30 120 74 - 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18 0 0 - 5 39 46 19 36 34.6 55 231 -9 - 5 58 0 - 5 21 29 - 6 4 3 - 5 15 25 -0.28 - 17 0 0 - 5 23 8 19 36 38.4 54 232 -10 - 5 41 25 - 5 4 50 - 5 47 29 - 4 58 45 -0.28 - 16 0 0 - 5 6 4 19 36 42.1 53 232 -11 - 5 24 22 - 4 47 43 - 5 30 27 - 4 41 37 -0.28 - 15 0 0 - 4 48 32 19 36 45.7 52 232 -12 - 5 6 53 - 4 30 9 - 5 12 58 - 4 24 2 -0.28 - 14 0 0 - 4 30 33 19 36 49.4 51 233 -13 - 4 48 56 - 4 12 8 - 4 55 2 - 4 6 1 -0.28 - 13 0 0 - 4 12 8 19 36 53.0 50 233 -14 - 4 30 33 - 3 53 41 - 4 36 40 - 3 47 33 -0.28 - 12 0 0 - 3 53 16 19 36 56.5 49 234 -15 - 4 11 44 - 3 34 47 - 4 17 51 - 3 28 38 -0.28 - 11 0 0 - 3 33 58 19 37 0.0 48 234 -16 - 3 52 28 - 3 15 27 - 3 58 37 - 3 9 17 -0.28 - 10 0 0 - 3 14 15 19 37 3.4 47 234 -17 - 3 32 47 - 2 55 41 - 3 38 56 - 2 49 30 -0.28 - 9 0 0 - 2 54 5 19 37 6.8 46 234 -18 - 3 12 40 - 2 35 29 - 3 18 50 - 2 29 18 -0.28 - 8 0 0 - 2 33 31 19 37 10.2 45 235 -19 - 2 52 7 - 2 14 52 - 2 58 18 - 2 8 40 -0.28 - 7 0 0 - 2 12 31 19 37 13.5 44 235 -20 - 2 31 10 - 1 53 50 - 2 37 22 - 1 47 38 -0.28 - 6 0 0 - 1 51 7 19 37 16.7 43 235 -21 - 2 9 48 - 1 32 24 - 2 16 0 - 1 26 10 -0.28 - 5 0 0 - 1 29 19 19 37 19.9 42 235 -22 - 1 48 2 - 1 10 33 - 1 54 15 - 1 4 19 -0.28 - 4 0 0 - 1 7 6 19 37 23.1 41 236 -23 - 1 25 52 - 0 48 18 - 1 32 6 - 0 42 3 -0.28 - 3 0 0 - 0 44 30 19 37 26.1 40 236 -25 - 1 3 19 - 0 25 40 - 1 9 33 - 0 19 24 -0.28 - 2 0 0 - 0 21 31 19 37 29.1 39 236 -26 - 0 40 22 - 0 2 39 - 0 46 37 0 3 38 -0.28 - 1 0 0 0 1 50 19 37 32.1 38 236 -27 - 0 17 3 0 20 45 - 0 23 19 0 27 2 -0.28 0 0 0 0 25 34 19 37 35.0 37 236 -28 0 6 39 0 44 31 0 0 22 0 50 49 -0.28 1 0 0 0 49 39 19 37 37.8 36 237 -29 0 30 42 1 8 39 0 24 24 1 14 58 -0.28 2 0 0 1 14 6 19 37 40.5 35 237 -30 0 55 6 1 33 8 0 48 48 1 39 28 -0.28 3 0 0 1 38 54 19 37 43.2 34 237 -31 1 19 52 1 57 58 1 13 33 2 4 18 -0.28 4 0 0 2 4 1 19 37 45.8 33 237 -32 1 44 57 2 23 8 1 38 37 2 29 29 -0.28 5 0 0 2 29 29 19 37 48.4 31 237 -33 2 10 22 2 48 37 2 4 2 2 54 59 -0.28 6 0 0 2 55 15 19 37 50.8 30 237 -34 2 36 6 3 14 26 2 29 45 3 20 48 -0.28 7 0 0 3 21 20 19 37 53.2 29 238 -35 3 2 9 3 40 33 2 55 47 3 46 56 -0.28 8 0 0 3 47 43 19 37 55.5 28 238 -36 3 28 30 4 6 58 3 22 7 4 13 22 -0.28 9 0 0 4 14 23 19 37 57.8 27 238 -37 3 55 8 4 33 40 3 48 45 4 40 5 -0.28 10 0 0 4 41 20 19 37 59.9 26 238 -38 4 22 2 5 0 38 4 15 39 5 7 4 -0.28 11 0 0 5 8 32 19 38 2.0 25 238 -39 4 49 13 5 27 53 4 42 49 5 34 19 -0.28 12 0 0 5 36 0 19 38 4.0 24 238 -40 5 16 39 5 55 23 5 10 14 6 1 50 -0.28 13 0 0 6 3 43 19 38 5.9 23 238 -42 5 44 20 6 23 7 5 37 54 6 29 35 -0.28 14 0 0 6 31 39 19 38 7.7 22 239 -43 6 12 14 6 51 6 6 5 48 6 57 34 -0.28 15 0 0 6 59 49 19 38 9.5 21 239 -44 6 40 22 7 19 17 6 33 55 7 25 46 -0.28 16 0 0 7 28 11 19 38 11.1 19 239 -45 7 8 43 7 47 41 7 2 15 7 54 10 -0.28 17 0 0 7 56 44 19 38 12.7 18 239 -46 7 37 15 8 16 16 7 30 46 8 22 46 -0.28 18 0 0 8 25 29 19 38 14.2 17 239 -47 8 5 57 8 45 2 7 59 29 8 51 32 -0.28 19 0 0 8 54 23 19 38 15.6 16 240 -48 8 34 51 9 13 58 8 28 21 9 20 29 -0.28 20 0 0 9 23 27 19 38 16.9 15 240 -49 9 3 53 9 43 4 8 57 23 9 49 35 -0.28 21 0 0 9 52 40 19 38 18.1 14 240 -50 9 33 4 10 12 17 9 26 34 10 18 49 -0.28 22 0 0 10 22 0 19 38 19.2 13 240 -51 10 2 23 10 41 39 9 55 52 10 48 11 -0.28 23 0 0 10 51 27 19 38 20.2 12 240 -52 10 31 49 11 11 7 10 25 18 11 17 39 -0.28 24 0 0 11 21 0 19 38 21.1 11 240 -53 11 1 21 11 40 41 10 54 49 11 47 14 -0.27 25 0 0 11 50 38 19 38 22.0 10 241 -54 11 30 58 12 10 20 11 24 26 12 16 53 -0.27 26 0 0 12 20 21 19 38 22.7 8 241 -55 12 0 40 12 40 4 11 54 8 12 46 37 -0.27 27 0 0 12 50 7 19 38 23.4 7 241 -56 12 30 25 13 9 51 12 23 53 13 16 25 -0.27 28 0 0 13 19 56 19 38 24.0 6 241 -57 13 0 13 13 39 40 12 53 40 13 46 14 -0.27 29 0 0 13 49 46 19 38 24.4 5 242 -58 13 30 3 14 9 32 13 23 30 14 16 6 -0.27 30 0 0 14 19 38 19 38 24.8 4 242 -59 13 59 54 14 39 24 13 53 21 14 45 58 -0.27 31 0 0 14 49 30 19 38 25.1 3 242 -59 14 29 45 15 9 16 14 23 12 15 15 51 -0.27 32 0 0 15 19 21 19 38 25.3 2 242 -60 14 59 36 15 39 8 14 53 3 15 45 42 -0.27 33 0 0 15 49 10 19 38 25.4 1 243 -61 15 29 25 16 8 58 15 22 52 16 15 33 -0.26 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 320-135923 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 07 32.9236 DE: -26 01 37.998 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 07 32.9236 DE: -26 01 37.998 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 9.8 * B mag [mag]: 11.5 * Diameter [mas]: 0.60 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1202) Marina asteroid class: approx. diameter [km]: 61 approx. diameter ["]: 0.021 distance from Earth [AU]: 3.93990 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): 0.013", 0.003", 94.35° remarks: * orbital elements for (1202)Marina : Mean anomaly = 305.9652724002 deg Arg. of pericenter = 307.9232503094 deg Long. of node = 49.8230011117 deg Inclination = 3.3333524376 deg Eccentricity = 0.1674830673 Semimajor axis = 3.9949808427 AU Perihelion dist = 3.3258891975 AU Mag: H = 10.08, G = 0.15 Epoch of elements : MJD 60599.81565800 TDT (2024 Oct 16.8157) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Apr24,2.37,2024,10,16,19.575798,-0.010576,0.272461,14.885098,0.555902,0.005480,-0.000015,0.000000,0.000000 -47.1761,-26.0252,-117.29,-9.29,False UCAC4 320-135923,18.12581214,-26.0272218,11.53,9.84,8.93,0.6,0,,18.15125847,-26.0251527,6.87,7.33,0,0,0 1202,Marina,16.71,62.521,3.9399,0,0,2.465,1.24,,4.0,0 0,305.8646,2024,10,16,307.9233,49.8230,3.3334,0.16748,3.99498,3.32589,10.08,5.0,0.15 1.166,0.0130,0.0033,94,0.0036,Known errors,0.65,0,-1,-1 20241016_135923,60140.64 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:20 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org