IOTA/IOTA-ES occultation update for (1274) Delportia / UCAC4 335-203276 event on 2024 Nov 04, 12:05 UT Visible from Summary ------- On 2024 Nov 04 UT, the 11.1428598246858 km diameter asteroid (1274) Delportia will occult a 10.3 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 6.46 mag to 16.76 mag (the magnitude of the asteroid) for at most 0.370 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 Nov 04, 12:02 - 2024 Nov 04, 12:08 * geocentric midpoint of event [JD]: 2460619.00384755 * magnitude of target star: 10.30 * magnitude drop [mag]: 6.46 * estimated maximum duration [s]: 0.370 * Moon: 9 % sunlit, 34° distance * Sun: 67° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.28 * 1 sigma uncertainty interval [seconds]: +/- 0.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.002", 77°) * approx speed of asteroid's shadow [km/s]: 30.9575 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 335-203276 by 1274 Delportia on 2024 Nov 4 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 - 24 0 0 - 2 44 43 12 2 8.9 0 113 67 - 2 48 5 - 2 41 21 - 2 50 0 - 2 39 26 .... - 23 0 0 - 3 10 3 12 2 9.0 2 113 68 - 3 13 25 - 3 6 41 - 3 15 20 - 3 4 47 -0.01 - 22 0 0 - 3 35 7 12 2 9.2 3 113 69 - 3 38 28 - 3 31 45 - 3 40 23 - 3 29 51 -0.07 - 21 0 0 - 3 59 53 12 2 9.4 4 113 70 - 4 3 14 - 3 56 32 - 4 5 8 - 3 54 38 -0.09 - 20 0 0 - 4 24 21 12 2 9.7 5 113 71 - 4 27 42 - 4 21 0 - 4 29 36 - 4 19 7 -0.11 - 19 0 0 - 4 48 31 12 2 10.0 6 113 72 - 4 51 52 - 4 45 11 - 4 53 46 - 4 43 17 -0.11 - 18 0 0 - 5 12 22 12 2 10.5 7 113 73 - 5 15 43 - 5 9 2 - 5 17 36 - 5 7 9 -0.12 - 17 0 0 - 5 35 54 12 2 11.0 8 112 74 - 5 39 14 - 5 32 34 - 5 41 7 - 5 30 41 -0.12 - 16 0 0 - 5 59 6 12 2 11.5 9 112 75 - 6 2 26 - 5 55 47 - 6 4 19 - 5 53 54 -0.13 - 15 0 0 - 6 21 58 12 2 12.2 10 112 76 - 6 25 18 - 6 18 39 - 6 27 10 - 6 16 46 -0.13 - 14 0 0 - 6 44 30 12 2 12.9 11 112 77 - 6 47 49 - 6 41 11 - 6 49 41 - 6 39 18 -0.13 - 13 0 0 - 7 6 40 12 2 13.7 12 112 78 - 7 9 59 - 7 3 22 - 7 11 51 - 7 1 29 -0.14 - 12 0 0 - 7 28 29 12 2 14.5 13 112 79 - 7 31 47 - 7 25 11 - 7 33 39 - 7 23 19 -0.14 - 11 0 0 - 7 49 56 12 2 15.5 14 112 80 - 7 53 14 - 7 46 39 - 7 55 6 - 7 44 47 -0.14 - 10 0 0 - 8 11 2 12 2 16.4 15 112 81 - 8 14 19 - 8 7 44 - 8 16 11 - 8 5 53 -0.14 - 9 0 0 - 8 31 45 12 2 17.5 16 112 82 - 8 35 2 - 8 28 28 - 8 36 53 - 8 26 36 -0.14 - 8 0 0 - 8 52 5 12 2 18.6 18 111 82 - 8 55 21 - 8 48 48 - 8 57 13 - 8 46 57 -0.14 - 7 0 0 - 9 12 2 12 2 19.8 19 111 83 - 9 15 18 - 9 8 46 - 9 17 9 - 9 6 54 -0.14 - 6 0 0 - 9 31 36 12 2 21.0 20 111 84 - 9 34 52 - 9 28 20 - 9 36 42 - 9 26 29 -0.14 - 5 0 0 - 9 50 46 12 2 22.3 21 111 84 - 9 54 1 - 9 47 30 - 9 55 52 - 9 45 40 -0.14 - 4 0 0 -10 9 32 12 2 23.7 22 111 84 -10 12 48 -10 6 17 -10 14 38 -10 4 27 -0.14 - 3 0 0 -10 27 55 12 2 25.1 23 111 84 -10 31 10 -10 24 40 -10 33 0 -10 22 50 -0.14 - 2 0 0 -10 45 53 12 2 26.6 24 111 84 -10 49 7 -10 42 38 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58 -0.16 48 0 0 -16 27 40 12 4 36.5 72 114 39 -16 30 47 -16 24 33 -16 32 32 -16 22 47 -0.16 49 0 0 -16 23 2 12 4 39.9 73 115 38 -16 26 9 -16 19 55 -16 27 55 -16 18 9 -0.16 50 0 0 -16 17 57 12 4 43.3 73 117 37 -16 21 5 -16 14 50 -16 22 50 -16 13 4 -0.16 51 0 0 -16 12 25 12 4 46.7 74 118 36 -16 15 33 -16 9 18 -16 17 19 -16 7 32 -0.16 52 0 0 -16 6 26 12 4 50.1 75 120 35 -16 9 34 -16 3 19 -16 11 20 -16 1 33 -0.16 53 0 0 -16 0 0 12 4 53.6 76 122 34 -16 3 7 -15 56 52 -16 4 54 -15 55 6 -0.16 54 0 0 -15 53 6 12 4 57.1 77 124 33 -15 56 14 -15 49 58 -15 58 0 -15 48 12 -0.16 55 0 0 -15 45 45 12 5 0.6 77 127 32 -15 48 53 -15 42 37 -15 50 40 -15 40 51 -0.16 56 0 0 -15 37 57 12 5 4.1 78 130 31 -15 41 5 -15 34 49 -15 42 52 -15 33 3 -0.16 57 0 0 -15 29 42 12 5 7.6 79 133 30 -15 32 51 -15 26 34 -15 34 37 -15 24 47 -0.16 58 0 0 -15 21 0 12 5 11.1 79 137 29 -15 24 9 -15 17 51 -15 25 55 -15 16 5 -0.16 59 0 0 -15 11 51 12 5 14.7 80 141 28 -15 14 59 -15 8 42 -15 16 46 -15 6 55 -0.16 60 0 0 -15 2 14 12 5 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29.2 54 235 -11 - 4 8 31 - 4 1 48 - 4 10 25 - 3 59 54 -0.15 98 0 0 - 3 40 9 12 7 32.4 53 236 -12 - 3 43 31 - 3 36 47 - 3 45 25 - 3 34 52 -0.15 99 0 0 - 3 14 50 12 7 35.6 52 236 -14 - 3 18 12 - 3 11 28 - 3 20 7 - 3 9 33 -0.15 100 0 0 - 2 49 13 12 7 38.7 51 236 -15 - 2 52 36 - 2 45 51 - 2 54 31 - 2 43 56 -0.15 101 0 0 - 2 23 20 12 7 41.8 50 236 -16 - 2 26 43 - 2 19 57 - 2 28 38 - 2 18 2 -0.15 102 0 0 - 1 57 10 12 7 44.8 49 236 -17 - 2 0 33 - 1 53 47 - 2 2 29 - 1 51 52 -0.15 103 0 0 - 1 30 44 12 7 47.8 48 237 -18 - 1 34 8 - 1 27 21 - 1 36 3 - 1 25 25 -0.15 104 0 0 - 1 4 4 12 7 50.7 46 237 -19 - 1 7 27 - 1 0 40 - 1 9 23 - 0 58 44 -0.15 105 0 0 - 0 37 8 12 7 53.6 45 237 -20 - 0 40 32 - 0 33 44 - 0 42 28 - 0 31 48 -0.15 106 0 0 - 0 9 59 12 7 56.5 44 237 -21 - 0 13 23 - 0 6 34 - 0 15 19 - 0 4 38 -0.15 107 0 0 0 17 24 12 7 59.2 43 237 -22 0 13 59 0 20 49 0 12 3 0 22 45 -0.15 108 0 0 0 44 59 12 8 2.0 42 237 -23 0 41 34 0 48 24 0 39 38 0 50 20 -0.15 109 0 0 1 12 46 12 8 4.7 41 238 -24 1 9 21 1 16 11 1 7 24 1 18 7 -0.15 110 0 0 1 40 44 12 8 7.3 40 238 -26 1 37 18 1 44 9 1 35 22 1 46 6 -0.15 111 0 0 2 8 52 12 8 9.9 39 238 -27 2 5 27 2 12 18 2 3 30 2 14 15 -0.15 112 0 0 2 37 10 12 8 12.4 38 238 -28 2 33 45 2 40 36 2 31 48 2 42 33 -0.15 113 0 0 3 5 37 12 8 14.8 37 238 -29 3 2 11 3 9 4 3 0 15 3 11 0 -0.15 114 0 0 3 34 13 12 8 17.2 35 238 -30 3 30 46 3 37 39 3 28 49 3 39 36 -0.15 115 0 0 4 2 55 12 8 19.5 34 239 -31 3 59 29 4 6 22 3 57 32 4 8 19 -0.15 116 0 0 4 31 44 12 8 21.8 33 239 -32 4 28 18 4 35 11 4 26 21 4 37 8 -0.15 117 0 0 5 0 39 12 8 24.0 32 239 -33 4 57 12 5 4 6 4 55 15 5 6 3 -0.15 118 0 0 5 29 39 12 8 26.1 31 239 -34 5 26 12 5 33 6 5 24 15 5 35 3 -0.15 119 0 0 5 58 43 12 8 28.1 30 239 -35 5 55 16 6 2 10 5 53 19 6 4 7 -0.15 120 0 0 6 27 51 12 8 30.1 29 239 -37 6 24 23 6 31 18 6 22 26 6 33 15 -0.15 121 0 0 6 57 1 12 8 32.0 28 240 -38 6 53 33 7 0 28 6 51 36 7 2 25 -0.15 122 0 0 7 26 12 12 8 33.9 27 240 -39 7 22 45 7 29 40 7 20 48 7 31 37 -0.15 123 0 0 7 55 25 12 8 35.7 26 240 -40 7 51 58 7 58 53 7 50 1 8 0 50 -0.15 124 0 0 8 24 38 12 8 37.4 24 240 -41 8 21 11 8 28 6 8 19 13 8 30 3 -0.15 125 0 0 8 53 51 12 8 39.0 23 240 -42 8 50 23 8 57 18 8 48 26 8 59 16 -0.15 126 0 0 9 23 2 12 8 40.5 22 240 -43 9 19 34 9 26 29 9 17 37 9 28 26 -0.15 127 0 0 9 52 10 12 8 42.0 21 241 -44 9 48 43 9 55 38 9 46 45 9 57 35 -0.15 128 0 0 10 21 16 12 8 43.4 20 241 -45 10 17 48 10 24 43 10 15 51 10 26 41 -0.15 129 0 0 10 50 18 12 8 44.8 19 241 -46 10 46 50 10 53 45 10 44 53 10 55 42 -0.15 130 0 0 11 19 15 12 8 46.0 18 241 -47 11 15 47 11 22 42 11 13 50 11 24 40 -0.15 131 0 0 11 48 7 12 8 47.2 17 241 -48 11 44 39 11 51 34 11 42 42 11 53 31 -0.15 132 0 0 12 16 52 12 8 48.3 16 242 -49 12 13 25 12 20 19 12 11 28 12 22 17 -0.15 133 0 0 12 45 31 12 8 49.3 15 242 -50 12 42 4 12 48 58 12 40 7 12 50 55 -0.15 134 0 0 13 14 2 12 8 50.3 13 242 -52 13 10 35 13 17 29 13 8 38 13 19 26 -0.15 135 0 0 13 42 25 12 8 51.2 12 242 -53 13 38 58 13 45 52 13 37 1 13 47 49 -0.14 136 0 0 14 10 39 12 8 52.0 11 243 -54 14 7 12 14 14 5 14 5 15 14 16 2 -0.14 137 0 0 14 38 43 12 8 52.7 10 243 -55 14 35 16 14 42 9 14 33 19 14 44 6 -0.14 138 0 0 15 6 36 12 8 53.3 9 243 -56 15 3 10 15 10 3 15 1 13 15 12 0 -0.14 139 0 0 15 34 19 12 8 53.9 8 243 -57 15 30 53 15 37 45 15 28 56 15 39 42 -0.14 140 0 0 16 1 50 12 8 54.4 7 244 -58 15 58 24 16 5 16 15 56 27 16 7 12 -0.14 141 0 0 16 29 8 12 8 54.9 6 244 -59 16 25 42 16 32 34 16 23 46 16 34 30 -0.14 142 0 0 16 56 13 12 8 55.2 5 244 -60 16 52 48 16 59 39 16 50 51 17 1 35 -0.14 143 0 0 17 23 5 12 8 55.5 4 245 -61 17 19 40 17 26 31 17 17 44 17 28 27 -0.13 144 0 0 17 49 43 12 8 55.7 3 245 -62 17 46 18 17 53 8 17 44 22 17 55 4 -0.13 145 0 0 18 16 6 12 8 55.9 2 245 -62 18 12 41 18 19 31 18 10 45 18 21 27 -0.11 146 0 0 18 42 14 12 8 56.0 1 245 -63 18 38 49 18 45 38 18 36 53 18 47 34 -0.05 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 335-203276 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 24 16.8534 DE: -23 00 01.769 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 24 16.8533 DE: -23 00 01.769 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.3 * B mag [mag]: 10.9 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1274) Delportia asteroid class: approx. diameter [km]: 11 approx. diameter ["]: 0.006 distance from Earth [AU]: 2.44240 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#48 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): 0.011", 0.002", 77.255° remarks: * orbital elements for (1274)Delportia : Mean anomaly = 88.3376146547 deg Arg. of pericenter = 244.8627404382 deg Long. of node = 327.0387144769 deg Inclination = 4.3946963520 deg Eccentricity = 0.1140735768 Semimajor axis = 2.2289421853 AU Perihelion dist = 1.9746787778 AU Mag: H = 11.93, G = 0.15 Epoch of elements : MJD 60618.50384729 TDT (2024 Nov 04.5038) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#482023Apr24,0.37,2024,11,4,12.092341,-0.031548,0.151306,17.112314,3.533403,0.005128,0.000719,-0.000001,0.000000 65.8272,-22.9532,-5.49,-15.61,False UCAC4 335-203276,19.40468155,-23.0004914,10.85,10.30,10.00,0.1,0,,19.42934742,-22.9532270,6.47,6.31,0,0,0 1274,Delportia,16.76,11.320,2.4424,0,0,4.461,12.73,,0.8,0 0,88.1884,2024,11,4,244.8627,327.0387,4.3947,0.11407,2.22894,1.97468,11.94,5.0,0.15 1.283,0.0107,0.0018,77,0.0018,Known errors,0.97,0,-1,-1 20241104_203276,60140.68 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:19 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org