IOTA/IOTA-ES occultation update for (760) Massinga / TYC 7394-00221-1 event on 2024 Oct 05, 13:47 UT Visible from Summary ------- On 2024 Oct 05 UT, the 74.030006096891 km diameter asteroid (760) Massinga will occult a 10.6 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 3.59 mag to 14.14 mag (the magnitude of the asteroid) for at most 3.840 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 05, 13:41 - 2024 Oct 05, 13:53 * geocentric midpoint of event [JD]: 2460589.07461333 * magnitude of target star: 10.59 * magnitude drop [mag]: 3.59 * estimated maximum duration [s]: 3.840 * Moon: 7 % sunlit, 55° distance * Sun: 85° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 75 * 1 sigma uncertainty interval [path widths]: +/- 0.29 * 1 sigma uncertainty interval [seconds]: +/- 2.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.018, +/- 0.008) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.008", 81°) * approx speed of asteroid's shadow [km/s]: 19.3167 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7394-00221-1 by 760 Massinga on 2024 Oct 5 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 - 38 0 0 -11 43 4 13 41 59.9 0 122 78 -12 6 55 .. .. .. -12 20 33 .. .. .. .... - 37 0 0 -12 19 9 13 42 0.0 1 121 79 -12 42 53 -11 55 22 -12 56 29 -11 41 45 0.05 - 36 0 0 -12 54 37 13 42 0.2 2 121 79 -13 18 16 -12 30 56 -13 31 48 -12 17 22 -0.04 - 35 0 0 -13 29 29 13 42 0.5 4 121 79 -13 53 3 -13 5 54 -14 6 32 -12 52 23 -0.07 - 34 0 0 -14 3 45 13 42 1.0 5 121 79 -14 27 13 -13 40 15 -14 40 38 -13 26 47 -0.08 - 33 0 0 -14 37 23 13 42 1.6 6 120 79 -15 0 45 -14 13 59 -15 14 8 -14 0 34 -0.09 - 32 0 0 -15 10 23 13 42 2.3 7 120 79 -15 33 40 -14 47 5 -15 46 59 -14 33 43 -0.10 - 31 0 0 -15 42 45 13 42 3.2 8 120 79 -16 5 56 -15 19 33 -16 19 12 -15 6 15 -0.11 - 30 0 0 -16 14 29 13 42 4.1 9 120 79 -16 37 35 -15 51 22 -16 50 47 -15 38 7 -0.11 - 29 0 0 -16 45 34 13 42 5.2 10 119 78 -17 8 34 -16 22 33 -17 21 44 -16 9 21 -0.11 - 28 0 0 -17 16 1 13 42 6.4 11 119 78 -17 38 55 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59 -17 32 24 -16 19 43 -0.14 70 0 0 -16 24 35 13 49 1.3 71 216 -8 -16 47 46 -16 1 21 -17 1 2 -15 48 3 -0.14 71 0 0 -15 52 22 13 49 7.5 70 217 -9 -16 15 40 -15 29 3 -16 29 0 -15 15 41 -0.14 72 0 0 -15 19 28 13 49 13.7 69 218 -10 -15 42 52 -14 56 3 -15 56 16 -14 42 37 -0.14 73 0 0 -14 45 54 13 49 19.8 68 219 -11 -15 9 24 -14 22 22 -15 22 51 -14 8 53 -0.14 74 0 0 -14 11 39 13 49 26.0 67 220 -13 -14 35 15 -13 48 1 -14 48 45 -13 34 28 -0.14 75 0 0 -13 36 43 13 49 32.1 66 221 -14 -14 0 26 -13 12 59 -14 14 0 -12 59 23 -0.14 76 0 0 -13 1 8 13 49 38.3 65 221 -15 -13 24 57 -12 37 18 -13 38 34 -12 23 38 -0.14 77 0 0 -12 24 54 13 49 44.4 64 222 -16 -12 48 49 -12 0 58 -13 2 30 -11 47 14 -0.14 78 0 0 -11 48 1 13 49 50.5 63 222 -17 -12 12 2 -11 23 59 -12 25 46 -11 10 12 -0.14 79 0 0 -11 10 30 13 49 56.6 62 223 -18 -11 34 37 -10 46 22 -11 48 25 -10 32 31 -0.14 80 0 0 -10 32 22 13 50 2.7 60 223 -19 -10 56 34 -10 8 7 -11 10 26 - 9 54 13 -0.14 81 0 0 - 9 53 37 13 50 8.7 59 223 -20 -10 17 55 - 9 29 16 -10 31 50 - 9 15 19 -0.14 82 0 0 - 9 14 16 13 50 14.7 58 224 -21 - 9 38 40 - 8 49 50 - 9 52 38 - 8 35 49 -0.14 83 0 0 - 8 34 20 13 50 20.6 57 224 -22 - 8 58 50 - 8 9 48 - 9 12 51 - 7 55 44 -0.14 84 0 0 - 7 53 50 13 50 26.5 56 224 -23 - 8 18 26 - 7 29 13 - 8 32 30 - 7 15 6 -0.14 85 0 0 - 7 12 48 13 50 32.3 55 224 -25 - 7 37 29 - 6 48 5 - 7 51 36 - 6 33 55 -0.14 86 0 0 - 6 31 13 13 50 38.1 53 225 -26 - 6 56 0 - 6 6 25 - 7 10 10 - 5 52 12 -0.14 87 0 0 - 5 49 8 13 50 43.8 52 225 -27 - 6 14 0 - 5 24 15 - 6 28 13 - 5 9 59 -0.14 88 0 0 - 5 6 34 13 50 49.5 51 225 -28 - 5 31 31 - 4 41 36 - 5 45 47 - 4 27 17 -0.14 89 0 0 - 4 23 32 13 50 55.0 50 225 -29 - 4 48 33 - 3 58 28 - 5 2 52 - 3 44 7 -0.13 90 0 0 - 3 40 3 13 51 0.5 48 225 -30 - 4 5 9 - 3 14 55 - 4 19 30 - 3 0 30 -0.13 91 0 0 - 2 56 8 13 51 5.9 47 225 -31 - 3 21 19 - 2 30 56 - 3 35 43 - 2 16 29 -0.13 92 0 0 - 2 11 50 13 51 11.3 46 226 -32 - 2 37 5 - 1 46 34 - 2 51 32 - 1 32 4 -0.13 93 0 0 - 1 27 10 13 51 16.5 45 226 -33 - 1 52 29 - 1 1 49 - 2 6 58 - 0 47 18 -0.13 94 0 0 - 0 42 9 13 51 21.6 43 226 -35 - 1 7 32 - 0 16 45 - 1 22 3 - 0 2 11 -0.13 95 0 0 0 3 10 13 51 26.6 42 226 -36 - 0 22 16 0 28 38 - 0 36 49 0 43 14 -0.13 96 0 0 0 48 46 13 51 31.5 41 226 -37 0 23 17 1 14 18 0 8 42 1 28 55 -0.13 97 0 0 1 34 38 13 51 36.3 40 226 -38 1 9 6 2 0 12 0 54 29 2 14 52 -0.13 98 0 0 2 20 43 13 51 41.0 38 226 -39 1 55 8 2 46 20 1 40 30 3 1 1 -0.13 99 0 0 3 7 0 13 51 45.5 37 227 -40 2 41 22 3 32 39 2 26 42 3 47 22 -0.13 100 0 0 3 53 26 13 51 49.9 36 227 -41 3 27 46 4 19 8 3 13 5 4 33 52 -0.13 101 0 0 4 40 0 13 51 54.2 35 227 -42 4 14 18 5 5 44 3 59 36 5 20 29 -0.13 102 0 0 5 26 40 13 51 58.3 33 227 -43 5 0 56 5 52 25 4 46 13 6 7 11 -0.13 103 0 0 6 13 23 13 52 2.4 32 227 -44 5 47 39 6 39 10 5 32 55 6 53 57 -0.13 104 0 0 7 0 9 13 52 6.2 31 228 -45 6 34 23 7 25 56 6 19 39 7 40 44 -0.13 105 0 0 7 46 54 13 52 9.9 30 228 -46 7 21 7 8 12 42 7 6 23 8 27 30 -0.13 106 0 0 8 33 37 13 52 13.5 28 228 -47 8 7 50 8 59 26 7 53 5 9 14 14 -0.13 107 0 0 9 20 16 13 52 16.9 27 228 -48 8 54 29 9 46 5 8 39 44 10 0 53 -0.13 108 0 0 10 6 49 13 52 20.2 26 228 -49 9 41 2 10 32 38 9 26 17 10 47 26 -0.13 109 0 0 10 53 14 13 52 23.3 24 229 -50 10 27 28 11 19 3 10 12 43 11 33 50 -0.13 110 0 0 11 39 30 13 52 26.2 23 229 -51 11 13 44 12 5 17 10 59 0 12 20 5 -0.13 111 0 0 12 25 33 13 52 29.0 22 229 -52 11 59 49 12 51 20 11 45 5 13 6 7 -0.13 112 0 0 13 11 24 13 52 31.6 21 229 -53 12 45 40 13 37 9 12 30 57 13 51 55 -0.13 113 0 0 13 56 59 13 52 34.1 20 230 -54 13 31 17 14 22 42 13 16 35 14 37 27 -0.13 114 0 0 14 42 17 13 52 36.4 18 230 -54 14 16 37 15 7 58 14 1 56 15 22 42 -0.13 115 0 0 15 27 16 13 52 38.6 17 230 -55 15 1 39 15 52 56 14 46 59 16 7 38 -0.13 116 0 0 16 11 56 13 52 40.6 16 230 -56 15 46 20 16 37 33 15 31 42 16 52 14 -0.13 117 0 0 16 56 13 13 52 42.5 15 231 -57 16 30 41 17 21 47 16 16 4 17 36 27 -0.12 118 0 0 17 40 7 13 52 44.1 13 231 -57 17 14 38 18 5 39 17 0 3 18 20 17 -0.12 119 0 0 18 23 37 13 52 45.7 12 231 -58 17 58 11 18 49 5 17 43 37 19 3 41 -0.12 120 0 0 19 6 41 13 52 47.1 11 232 -59 18 41 18 19 32 5 18 26 46 19 46 39 -0.12 121 0 0 19 49 17 13 52 48.3 10 232 -59 19 23 58 20 14 38 19 9 28 20 29 10 -0.12 122 0 0 20 31 25 13 52 49.4 9 232 -60 20 6 9 20 56 42 19 51 42 21 11 12 -0.12 123 0 0 21 13 3 13 52 50.4 8 233 -60 20 47 52 21 38 16 20 33 27 21 52 44 -0.12 124 0 0 21 54 11 13 52 51.2 6 233 -61 21 29 3 22 19 20 21 14 41 22 33 45 -0.12 125 0 0 22 34 46 13 52 51.8 5 233 -61 22 9 44 22 59 51 21 55 24 23 14 14 -0.11 126 0 0 23 14 50 13 52 52.3 4 234 -61 22 49 52 23 39 50 22 35 34 23 54 10 -0.11 127 0 0 23 54 20 13 52 52.7 3 234 -62 23 29 26 24 19 15 23 15 12 24 33 32 -0.10 128 0 0 24 33 15 13 52 53.0 2 235 -62 24 8 27 24 58 6 23 54 15 25 12 20 -0.08 129 0 0 25 11 36 13 52 53.1 1 235 -62 24 46 53 25 36 22 24 32 44 25 50 33 0.01 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 7394-00221-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 35 03.1092 DE: -30 56 20.846 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 35 03.1091 DE: -30 56 20.846 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.6 * B mag [mag]: 11.3 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (760) Massinga asteroid class: approx. diameter [km]: 74 approx. diameter ["]: 0.031 distance from Earth [AU]: 3.33660 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#68 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): 0.018", 0.008", 81.168° remarks: * orbital elements for (760)Massinga : Mean anomaly = 97.4675492098 deg Arg. of pericenter = 200.2771612510 deg Long. of node = 331.5307488495 deg Inclination = 12.5384405168 deg Eccentricity = 0.2340819836 Semimajor axis = 3.1484418172 AU Perihelion dist = 2.4114483114 AU Mag: H = 7.96, G = 0.15 Epoch of elements : MJD 60588.57461300 TDT (2024 Oct 05.5746) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#682023Apr24,3.84,2024,10,5,13.790720,-0.053423,0.133458,10.123780,4.047518,0.005869,0.000307,0.000000,0.000000 57.5715,-30.9211,-29.80,-5.06,False TYC 7394-00221-1,18.58419702,-30.9391240,11.25,10.59,10.23,0.1,0,,18.61070186,-30.9211214,3.59,3.50,0,0,0 760,Massinga,14.14,74.272,3.3366,0,0,2.074,10.67,,4.8,0 0,97.3662,2024,10,5,200.2772,331.5307,12.5384,0.23408,3.14844,2.41145,7.96,5.0,0.15 1.286,0.0180,0.0080,81,0.0088,Known errors,0.83,0,-1,-1 20241005_0221-1,60140.61 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:41 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org