IOTA/IOTA-ES occultation update for (4613) Mamoru / UCAC4 365-078347 event on 2024 Sep 09, 22:59 UT Visible from Summary ------- On 2024 Sep 09 UT, the 10.8134202031744 km diameter asteroid (4613) Mamoru will occult a 11.8 mag star in the constellation Ophiuchus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.63 mag to 17.45 mag (the magnitude of the asteroid) for at most 0.680 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 Sep 09, 22:52 - 2024 Sep 09, 23:06 * geocentric midpoint of event [JD]: 2460563.45807995 * magnitude of target star: 11.83 * magnitude drop [mag]: 5.63 * estimated maximum duration [s]: 0.680 * Moon: 36 % sunlit, 15° distance * Sun: 86° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.25 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.007, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.007", 0.001", 99°) * approx speed of asteroid's shadow [km/s]: 16.0992 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 365-078347 by 4613 Mamoru on 2024 Sep 9 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 -164 0 0 16 45 54 22 53 2.2 0 108 78 16 42 46 16 49 3 16 41 11 16 50 38 .... -163 0 0 16 26 56 22 53 2.3 1 108 78 16 23 47 16 30 5 16 22 12 16 31 40 0.10 -162 0 0 16 7 35 22 53 2.5 2 109 79 16 4 25 16 10 44 16 2 50 16 12 19 0.07 -161 0 0 15 47 50 22 53 2.9 4 109 79 15 44 41 15 51 0 15 43 5 15 52 36 0.06 -160 0 0 15 27 43 22 53 3.4 5 109 79 15 24 33 15 30 53 15 22 58 15 32 29 0.05 -159 0 0 15 7 14 22 53 4.0 6 109 79 15 4 3 15 10 24 15 2 27 15 12 0 0.05 -158 0 0 14 46 22 22 53 4.8 7 110 78 14 43 11 14 49 33 14 41 35 14 51 9 0.05 -157 0 0 14 25 8 22 53 5.6 8 110 78 14 21 57 14 28 19 14 20 21 14 29 55 0.05 -156 0 0 14 3 32 22 53 6.7 9 110 78 14 0 21 14 6 43 13 58 44 14 8 20 0.05 -155 0 0 13 41 35 22 53 7.8 10 110 77 13 38 23 13 44 46 13 36 46 13 46 23 0.04 -154 0 0 13 19 16 22 53 9.1 11 111 77 13 16 4 13 22 28 13 14 27 13 24 5 0.04 -153 0 0 12 56 36 22 53 10.5 12 111 76 12 53 24 12 59 49 12 51 47 13 1 26 0.04 -152 0 0 12 33 36 22 53 12.0 13 111 76 12 30 23 12 36 49 12 28 46 12 38 26 0.04 -151 0 0 12 10 16 22 53 13.7 14 111 75 12 7 2 12 13 29 12 5 25 12 15 6 0.04 -150 0 0 11 46 35 22 53 15.6 15 111 74 11 43 21 11 49 48 11 41 44 11 51 26 0.04 -149 0 0 11 22 35 22 53 17.5 16 112 74 11 19 21 11 25 49 11 17 43 11 27 26 0.04 -148 0 0 10 58 16 22 53 19.6 17 112 73 10 55 1 11 1 30 10 53 24 11 3 8 0.04 -147 0 0 10 33 38 22 53 21.9 18 112 72 10 30 23 10 36 52 10 28 45 10 38 30 0.04 -146 0 0 10 8 41 22 53 24.3 19 112 71 10 5 26 10 11 56 10 3 48 10 13 34 0.04 -145 0 0 9 43 27 22 53 26.8 20 112 70 9 40 12 9 46 42 9 38 33 9 48 20 0.04 -144 0 0 9 17 55 22 53 29.5 21 113 70 9 14 40 9 21 11 9 13 1 9 22 49 0.04 -143 0 0 8 52 7 22 53 32.3 23 113 69 8 48 51 8 55 23 8 47 13 8 57 1 0.04 -142 0 0 8 26 2 22 53 35.2 24 113 68 8 22 46 8 29 18 8 21 7 8 30 57 0.04 -141 0 0 7 59 42 22 53 38.3 25 113 67 7 56 25 8 2 58 7 54 46 8 4 37 0.04 -140 0 0 7 33 6 22 53 41.5 26 113 66 7 29 49 7 36 22 7 28 10 7 38 1 0.04 -139 0 0 7 6 15 22 53 44.9 27 113 65 7 2 58 7 9 32 7 1 19 7 11 11 0.04 -138 0 0 6 39 11 22 53 48.4 28 113 64 6 35 54 6 42 28 6 34 14 6 44 7 0.04 -137 0 0 6 11 53 22 53 52.1 29 113 63 6 8 35 6 15 10 6 6 56 6 16 50 0.04 -136 0 0 5 44 22 22 53 55.9 30 114 62 5 41 4 5 47 39 5 39 25 5 49 19 0.04 -135 0 0 5 16 39 22 53 59.8 31 114 61 5 13 21 5 19 57 5 11 42 5 21 37 0.04 -134 0 0 4 48 45 22 54 3.9 32 114 60 4 45 27 4 52 3 4 43 47 4 53 42 0.04 -133 0 0 4 20 40 22 54 8.1 34 114 59 4 17 21 4 23 58 4 15 41 4 25 38 0.04 -132 0 0 3 52 24 22 54 12.4 35 114 58 3 49 6 3 55 43 3 47 26 3 57 23 0.04 -131 0 0 3 24 0 22 54 16.9 36 114 57 3 20 41 3 27 18 3 19 1 3 28 59 0.04 -130 0 0 2 55 27 22 54 21.5 37 114 56 2 52 8 2 58 46 2 50 28 3 0 26 0.04 -129 0 0 2 26 46 22 54 26.2 38 114 55 2 23 27 2 30 5 2 21 47 2 31 45 0.04 -128 0 0 1 57 58 22 54 31.0 39 114 54 1 54 39 2 1 17 1 52 59 2 2 57 0.04 -127 0 0 1 29 4 22 54 36.0 40 114 53 1 25 45 1 32 23 1 24 4 1 34 3 0.04 -126 0 0 1 0 4 22 54 41.1 41 114 51 0 56 45 1 3 23 0 55 4 1 5 4 0.04 -125 0 0 0 31 0 22 54 46.3 43 114 50 0 27 40 0 34 19 0 26 0 0 35 59 0.04 -124 0 0 0 1 52 22 54 51.7 44 114 49 - 0 1 28 0 5 11 - 0 3 8 0 6 51 0.04 -123 0 0 - 0 27 20 22 54 57.1 45 114 48 - 0 30 39 - 0 24 0 - 0 32 20 - 0 22 20 0.04 -122 0 0 - 0 56 33 22 55 2.7 46 114 47 - 0 59 53 - 0 53 14 - 1 1 33 - 0 51 33 0.04 -121 0 0 - 1 25 48 22 55 8.4 47 114 46 - 1 29 8 - 1 22 29 - 1 30 48 - 1 20 48 0.03 -120 0 0 - 1 55 3 22 55 14.2 48 114 45 - 1 58 23 - 1 51 44 - 2 0 4 - 1 50 3 0.03 -119 0 0 - 2 24 19 22 55 20.1 49 114 44 - 2 27 38 - 2 20 59 - 2 29 19 - 2 19 19 0.03 -118 0 0 - 2 53 33 22 55 26.1 50 114 43 - 2 56 52 - 2 50 13 - 2 58 33 - 2 48 33 0.03 -117 0 0 - 3 22 45 22 55 32.2 52 114 42 - 3 26 4 - 3 19 25 - 3 27 44 - 3 17 45 0.03 -116 0 0 - 3 51 54 22 55 38.3 53 113 41 - 3 55 13 - 3 48 34 - 3 56 54 - 3 46 54 0.03 -115 0 0 - 4 20 59 22 55 44.6 54 113 40 - 4 24 19 - 4 17 40 - 4 25 59 - 4 15 59 0.03 -114 0 0 - 4 50 0 22 55 51.0 55 113 38 - 4 53 20 - 4 46 41 - 4 55 0 - 4 45 1 0.03 -113 0 0 - 5 18 56 22 55 57.4 56 113 37 - 5 22 15 - 5 15 37 - 5 23 56 - 5 13 57 0.03 -112 0 0 - 5 47 46 22 56 3.9 57 113 36 - 5 51 5 - 5 44 27 - 5 52 45 - 5 42 46 0.03 -111 0 0 - 6 16 28 22 56 10.5 58 113 35 - 6 19 47 - 6 13 10 - 6 21 28 - 6 11 29 0.03 -110 0 0 - 6 45 4 22 56 17.2 59 112 34 - 6 48 22 - 6 41 45 - 6 50 2 - 6 40 5 0.03 -109 0 0 - 7 13 30 22 56 23.9 61 112 33 - 7 16 49 - 7 10 11 - 7 18 29 - 7 8 31 0.03 -108 0 0 - 7 41 47 22 56 30.7 62 112 32 - 7 45 6 - 7 38 29 - 7 46 46 - 7 36 49 0.03 -107 0 0 - 8 9 54 22 56 37.6 63 112 31 - 8 13 13 - 8 6 36 - 8 14 53 - 8 4 56 0.03 -106 0 0 - 8 37 51 22 56 44.5 64 112 30 - 8 41 9 - 8 34 33 - 8 42 49 - 8 32 53 0.03 -105 0 0 - 9 5 36 22 56 51.5 65 111 29 - 9 8 53 - 9 2 18 - 9 10 33 - 9 0 38 0.03 -104 0 0 - 9 33 8 22 56 58.5 66 111 28 - 9 36 26 - 9 29 51 - 9 38 5 - 9 28 11 0.03 -103 0 0 -10 0 28 22 57 5.6 67 111 26 -10 3 45 - 9 57 11 -10 5 25 - 9 55 31 0.03 -102 0 0 -10 27 34 22 57 12.7 68 110 25 -10 30 51 -10 24 17 -10 32 30 -10 22 37 0.03 -101 0 0 -10 54 26 22 57 19.8 69 110 24 -10 57 42 -10 51 9 -10 59 22 -10 49 29 0.03 -100 0 0 -11 21 2 22 57 27.0 71 110 23 -11 24 19 -11 17 46 -11 25 58 -11 16 7 0.03 - 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12 0 0 -25 18 46 23 5 39.6 24 262 -59 -25 21 47 -25 15 45 -25 23 19 -25 14 13 0.03 - 11 0 0 -25 9 51 23 5 42.2 23 261 -59 -25 12 53 -25 6 49 -25 14 24 -25 5 18 0.03 - 10 0 0 -25 0 31 23 5 44.7 22 261 -60 -25 3 33 -24 57 29 -25 5 5 -24 55 58 0.03 - 9 0 0 -24 50 47 23 5 47.1 21 260 -61 -24 53 49 -24 47 45 -24 55 21 -24 46 13 0.03 - 8 0 0 -24 40 39 23 5 49.3 20 260 -62 -24 43 41 -24 37 36 -24 45 13 -24 36 4 0.03 - 7 0 0 -24 30 6 23 5 51.5 19 260 -63 -24 33 8 -24 27 3 -24 34 40 -24 25 31 0.03 - 6 0 0 -24 19 8 23 5 53.6 18 259 -63 -24 22 11 -24 16 5 -24 23 43 -24 14 33 0.03 - 5 0 0 -24 7 47 23 5 55.7 17 259 -64 -24 10 50 -24 4 43 -24 12 22 -24 3 11 0.03 - 4 0 0 -23 56 1 23 5 57.6 17 258 -65 -23 59 4 -23 52 57 -24 0 36 -23 51 25 0.03 - 3 0 0 -23 43 51 23 5 59.4 16 258 -66 -23 46 54 -23 40 47 -23 48 27 -23 39 14 0.04 - 2 0 0 -23 31 16 23 6 1.1 15 257 -67 -23 34 20 -23 28 12 -23 35 53 -23 26 40 0.04 - 1 0 0 -23 18 18 23 6 2.7 14 257 -67 -23 21 22 -23 15 14 -23 22 55 -23 13 41 0.04 0 0 0 -23 4 56 23 6 4.2 13 257 -68 -23 8 0 -23 1 51 -23 9 33 -23 0 18 0.04 1 0 0 -22 51 9 23 6 5.6 12 256 -69 -22 54 14 -22 48 5 -22 55 47 -22 46 31 0.04 2 0 0 -22 36 59 23 6 6.9 11 256 -69 -22 40 4 -22 33 54 -22 41 38 -22 32 21 0.04 3 0 0 -22 22 26 23 6 8.1 10 256 -70 -22 25 31 -22 19 20 -22 27 4 -22 17 47 0.04 4 0 0 -22 7 28 23 6 9.2 9 255 -71 -22 10 34 -22 4 22 -22 12 8 -22 2 49 0.04 5 0 0 -21 52 7 23 6 10.2 8 255 -71 -21 55 13 -21 49 1 -21 56 47 -21 47 28 0.04 6 0 0 -21 36 23 23 6 11.1 7 254 -72 -21 39 29 -21 33 17 -21 41 3 -21 31 43 0.05 7 0 0 -21 20 16 23 6 11.8 6 254 -73 -21 23 22 -21 17 9 -21 24 56 -21 15 35 0.05 8 0 0 -21 3 45 23 6 12.5 5 254 -73 -21 6 52 -21 0 38 -21 8 26 -20 59 4 0.05 9 0 0 -20 46 52 23 6 13.0 4 253 -74 -20 49 59 -20 43 44 -20 51 33 -20 42 10 0.06 10 0 0 -20 29 35 23 6 13.4 3 253 -74 -20 32 43 -20 26 28 -20 34 18 -20 24 53 0.07 11 0 0 -20 11 57 23 6 13.8 2 253 -75 -20 15 4 -20 8 49 -20 16 39 -20 7 14 0.09 12 0 0 -19 53 55 23 6 14.0 1 252 -75 -19 57 4 -19 50 47 -19 58 38 -19 49 12 0.14 13 0 0 -19 35 32 23 6 14.0 0 252 -75 -19 38 40 -19 32 23 -19 40 15 -19 30 48 1.11 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 365-078347 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 16 50 21.2861 DE: -17 00 58.772 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 16 50 21.2861 DE: -17 00 58.772 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.8 * B mag [mag]: 12.7 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4613) Mamoru asteroid class: approx. diameter [km]: 11 approx. diameter ["]: 0.005 distance from Earth [AU]: 2.86210 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#58 date of fit: 2023 Apr 25 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): 0.007", 0.001", 99.433° remarks: * orbital elements for (4613)Mamoru : Mean anomaly = 264.0183554211 deg Arg. of pericenter = 255.5338298311 deg Long. of node = 144.7873683712 deg Inclination = 6.6608434846 deg Eccentricity = 0.3006143069 Semimajor axis = 2.6658677171 AU Perihelion dist = 1.8644697410 AU Mag: H = 11.81, G = 0.15 Epoch of elements : MJD 60562.95807992 TDT (2024 Sep 09.9581) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#582023Apr25,0.68,2024,9,9,22.993919,-0.007935,-0.022787,8.592502,-2.956223,0.005666,-0.000624,0.000000,0.000000 -81.4444,-17.0589,-165.66,4.84,False UCAC4 365-078347,16.83924617,-17.0163255,12.71,11.83,11.35,0.1,0,,16.86293324,-17.0589100,5.62,5.65,0,0,0 4613,Mamoru,17.45,11.021,2.8621,0,0,1.842,-9.08,,1.0,0 0,263.8014,2024,9,9,255.5338,144.7874,6.6608,0.30061,2.66587,1.86447,11.81,5.0,0.15 1.252,0.0070,0.0007,99,0.0013,Known errors,1.14,0,-1,-1 20240909_078347,60140.55 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:14 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org