IOTA/IOTA-ES occultation update for (248) Lameia / TYC 0818-01370-1 event on 2023 Nov 11, 16:03 UT Visible from E Russia Summary ------- On 2023 Nov 11 UT, the 51.9 km diameter asteroid (248) Lameia will occult a 10.9 mag star in the constellation Cancer for observers along a path across E Russia. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.42 mag to 15.32 mag (the magnitude of the asteroid) for at most 3.610 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: 100 * date and approx. time of event: 2023 Nov 11, 15:56 - 2023 Nov 11, 16:10 * geocentric midpoint of event [JD]: 2460260.16921229 * magnitude of target star: 10.92 * magnitude drop [mag]: 4.42 * estimated maximum duration [s]: 3.610 * Moon: 3 % sunlit, 73° distance * Sun: 94° distance * rough path description: E Russia The occultation path -------------------- * approximate projected width [km]: 57 * 1 sigma uncertainty interval [path widths]: +/- 0.03 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.006, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.006", 0.001", 109°) * approx speed of asteroid's shadow [km/s]: 14.3587 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0818-01370-1 by 248 Lameia on 2023 Nov 11 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 102 0 0 47 57 1 15 56 54.8 0 70 -57 47 40 41 48 13 22 47 39 43 48 14 21 .... 103 0 0 48 11 18 15 56 54.9 1 71 -57 47 55 1 48 27 37 47 54 3 48 28 36 -0.41 104 0 0 48 25 11 15 56 55.0 2 72 -57 48 8 57 48 41 28 48 7 59 48 42 26 -0.43 105 0 0 48 38 41 15 56 55.3 3 73 -57 48 22 29 48 54 55 48 21 31 48 55 53 -0.43 106 0 0 48 51 47 15 56 55.6 3 73 -57 48 35 38 49 7 58 48 34 40 49 8 56 -0.43 107 0 0 49 4 29 15 56 56.0 4 74 -57 48 48 23 49 20 38 48 47 24 49 21 36 -0.44 108 0 0 49 16 48 15 56 56.4 5 75 -57 49 0 44 49 32 54 48 59 46 49 33 52 -0.44 109 0 0 49 28 43 15 56 56.9 5 76 -57 49 12 42 49 44 47 49 11 44 49 45 45 -0.44 110 0 0 49 40 16 15 56 57.5 6 77 -57 49 24 17 49 56 17 49 23 19 49 57 15 -0.44 111 0 0 49 51 25 15 56 58.1 7 77 -57 49 35 28 50 7 24 49 34 31 50 8 22 -0.44 112 0 0 50 2 12 15 56 58.8 7 78 -57 49 46 17 50 18 8 49 45 20 50 19 6 -0.44 113 0 0 50 12 36 15 56 59.6 8 79 -57 49 56 43 50 28 30 49 55 46 50 29 27 -0.44 114 0 0 50 22 37 15 57 0.4 9 80 -57 50 6 47 50 38 29 50 5 49 50 39 26 -0.44 115 0 0 50 32 16 15 57 1.3 9 80 -57 50 16 27 50 48 6 50 15 30 50 49 3 -0.44 116 0 0 50 41 32 15 57 2.2 10 81 -57 50 25 46 50 57 20 50 24 49 50 58 17 -0.44 117 0 0 50 50 26 15 57 3.2 11 82 -57 50 34 42 51 6 13 50 33 45 51 7 10 -0.44 118 0 0 50 58 59 15 57 4.3 11 83 -56 50 43 16 51 14 43 50 42 20 51 15 40 -0.44 119 0 0 51 7 9 15 57 5.4 12 84 -56 50 51 28 51 22 51 50 50 32 51 23 48 -0.44 120 0 0 51 14 57 15 57 6.6 13 84 -56 50 59 19 51 30 38 50 58 22 51 31 35 -0.44 121 0 0 51 22 24 15 57 7.8 13 85 -56 51 6 47 51 38 3 51 5 51 51 39 0 -0.44 122 0 0 51 29 30 15 57 9.1 14 86 -56 51 13 54 51 45 7 51 12 58 51 46 3 -0.44 123 0 0 51 36 13 15 57 10.4 14 87 -56 51 20 40 51 51 49 51 19 44 51 52 45 -0.44 124 0 0 51 42 36 15 57 11.8 15 88 -55 51 27 4 51 58 10 51 26 8 51 59 6 -0.44 125 0 0 51 48 37 15 57 13.2 16 88 -55 51 33 6 52 4 10 51 32 10 52 5 6 -0.44 126 0 0 51 54 17 15 57 14.7 16 89 -55 51 38 48 52 9 49 51 37 52 52 10 45 -0.44 127 0 0 51 59 36 15 57 16.2 17 90 -55 51 44 8 52 15 6 51 43 12 52 16 2 -0.44 128 0 0 52 4 34 15 57 17.8 18 91 -54 51 49 7 52 20 3 51 48 11 52 20 59 -0.44 129 0 0 52 9 11 15 57 19.4 18 92 -54 51 53 45 52 24 39 51 52 50 52 25 35 -0.44 130 0 0 52 13 28 15 57 21.1 19 92 -54 51 58 3 52 28 54 51 57 7 52 29 50 -0.44 131 0 0 52 17 23 15 57 22.8 19 93 -53 52 1 59 52 32 49 52 1 4 52 33 45 -0.44 132 0 0 52 20 58 15 57 24.6 20 94 -53 52 5 35 52 36 23 52 4 40 52 37 19 -0.44 133 0 0 52 24 12 15 57 26.5 21 95 -53 52 8 50 52 39 36 52 7 55 52 40 32 -0.44 134 0 0 52 27 6 15 57 28.3 21 96 -52 52 11 45 52 42 29 52 10 49 52 43 25 -0.44 135 0 0 52 29 39 15 57 30.3 22 97 -52 52 14 18 52 45 2 52 13 23 52 45 57 -0.44 136 0 0 52 31 52 15 57 32.2 22 97 -52 52 16 32 52 47 14 52 15 37 52 48 9 -0.44 137 0 0 52 33 44 15 57 34.3 23 98 -51 52 18 24 52 49 6 52 17 29 52 50 1 -0.44 138 0 0 52 35 16 15 57 36.3 24 99 -51 52 19 57 52 50 37 52 19 1 52 51 32 -0.44 139 0 0 52 36 27 15 57 38.5 24 100 -51 52 21 8 52 51 48 52 20 13 52 52 43 -0.44 140 0 0 52 37 18 15 57 40.6 25 101 -50 52 22 0 52 52 39 52 21 4 52 53 34 -0.44 141 0 0 52 37 49 15 57 42.9 26 102 -50 52 22 30 52 53 9 52 21 35 52 54 4 -0.44 142 0 0 52 37 59 15 57 45.1 26 103 -50 52 22 40 52 53 19 52 21 45 52 54 14 -0.44 143 0 0 52 37 49 15 57 47.5 27 103 -49 52 22 30 52 53 9 52 21 35 52 54 4 -0.44 144 0 0 52 37 18 15 57 49.8 27 104 -49 52 21 59 52 52 38 52 21 4 52 53 34 -0.44 145 0 0 52 36 27 15 57 52.2 28 105 -48 52 21 8 52 51 47 52 20 13 52 52 43 -0.44 146 0 0 52 35 15 15 57 54.7 29 106 -48 52 19 56 52 50 36 52 19 1 52 51 31 -0.44 147 0 0 52 33 43 15 57 57.2 29 107 -48 52 18 24 52 49 4 52 17 29 52 49 59 -0.44 148 0 0 52 31 50 15 57 59.8 30 108 -47 52 16 31 52 47 11 52 15 35 52 48 7 -0.44 149 0 0 52 29 37 15 58 2.4 30 109 -47 52 14 17 52 44 59 52 13 22 52 45 54 -0.44 150 0 0 52 27 3 15 58 5.1 31 110 -46 52 11 42 52 42 25 52 10 47 52 43 21 -0.44 151 0 0 52 24 8 15 58 7.8 31 110 -46 52 8 47 52 39 31 52 7 51 52 40 26 -0.44 152 0 0 52 20 52 15 58 10.6 32 111 -45 52 5 30 52 36 16 52 4 35 52 37 12 -0.44 153 0 0 52 17 16 15 58 13.4 33 112 -45 52 1 53 52 32 40 52 0 58 52 33 36 -0.44 154 0 0 52 13 18 15 58 16.3 33 113 -44 51 57 55 52 28 44 51 56 59 52 29 39 -0.44 155 0 0 52 9 0 15 58 19.3 34 114 -44 51 53 35 52 24 26 51 52 40 52 25 22 -0.44 156 0 0 52 4 20 15 58 22.3 34 115 -44 51 48 55 52 19 47 51 47 59 52 20 43 -0.44 157 0 0 51 59 19 15 58 25.3 35 116 -43 51 43 52 52 14 48 51 42 57 52 15 43 -0.44 158 0 0 51 53 57 15 58 28.4 36 117 -43 51 38 29 52 9 26 51 37 33 52 10 22 -0.44 159 0 0 51 48 13 15 58 31.6 36 118 -42 51 32 44 52 3 44 51 31 48 52 4 40 -0.44 160 0 0 51 42 8 15 58 34.8 37 119 -42 51 26 37 51 57 40 51 25 41 51 58 36 -0.44 161 0 0 51 35 41 15 58 38.1 37 120 -41 51 20 9 51 51 14 51 19 13 51 52 11 -0.44 162 0 0 51 28 51 15 58 41.4 38 121 -41 51 13 18 51 44 27 51 12 22 51 45 23 -0.44 163 0 0 51 21 40 15 58 44.8 39 122 -40 51 6 5 51 37 17 51 5 9 51 38 13 -0.44 164 0 0 51 14 7 15 58 48.3 39 123 -39 50 58 30 51 29 45 50 57 34 51 30 42 -0.44 165 0 0 51 6 11 15 58 51.8 40 124 -39 50 50 33 51 21 51 50 49 36 51 22 48 -0.44 166 0 0 50 57 53 15 58 55.4 40 125 -38 50 42 13 51 13 35 50 41 16 51 14 32 -0.44 167 0 0 50 49 12 15 58 59.0 41 126 -38 50 33 30 51 4 56 50 32 34 51 5 53 -0.44 168 0 0 50 40 9 15 59 2.7 42 127 -37 50 24 25 50 55 54 50 23 28 50 56 51 -0.44 169 0 0 50 30 42 15 59 6.5 42 128 -37 50 14 56 50 46 30 50 13 59 50 47 27 -0.44 170 0 0 50 20 52 15 59 10.4 43 129 -36 50 5 4 50 36 42 50 4 7 50 37 39 -0.44 171 0 0 50 10 39 15 59 14.3 44 130 -36 49 54 49 50 26 31 49 53 52 50 27 28 -0.44 172 0 0 50 0 2 15 59 18.2 44 131 -35 49 44 10 50 15 57 49 43 12 50 16 54 -0.44 173 0 0 49 49 2 15 59 22.3 45 132 -34 49 33 7 50 4 58 49 32 9 50 5 56 -0.44 174 0 0 49 37 37 15 59 26.4 45 133 -34 49 21 40 49 53 36 49 20 43 49 54 34 -0.44 175 0 0 49 25 49 15 59 30.6 46 134 -33 49 9 49 49 41 50 49 8 51 49 42 48 -0.44 176 0 0 49 13 36 15 59 34.9 47 135 -33 48 57 34 49 29 40 48 56 36 49 30 38 -0.44 177 0 0 49 0 58 15 59 39.2 47 136 -32 48 44 54 49 17 5 48 43 56 49 18 3 -0.44 178 0 0 48 47 56 15 59 43.6 48 137 -31 48 31 49 49 4 6 48 30 51 49 5 4 -0.44 179 0 0 48 34 29 15 59 48.1 48 139 -31 48 18 20 48 50 41 48 17 21 48 51 40 -0.44 -180 0 0 48 20 37 15 59 52.7 49 140 -30 48 4 25 48 36 52 48 3 26 48 37 51 -0.44 -179 0 0 48 6 20 15 59 57.3 50 141 -29 47 50 5 48 22 37 47 49 6 48 23 36 -0.44 -178 0 0 47 51 37 16 0 2.0 50 142 -29 47 35 19 48 7 57 47 34 20 48 8 56 -0.44 -177 0 0 47 36 29 16 0 6.8 51 143 -28 47 20 8 47 52 52 47 19 9 47 53 51 -0.44 -176 0 0 47 20 54 16 0 11.7 52 145 -28 47 4 30 47 37 20 47 3 31 47 38 20 -0.44 -175 0 0 47 4 54 16 0 16.7 52 146 -27 46 48 27 47 21 23 46 47 28 47 22 22 -0.44 -174 0 0 46 48 27 16 0 21.7 53 147 -26 46 31 58 47 4 59 46 30 58 47 5 59 -0.44 -173 0 0 46 31 34 16 0 26.9 53 149 -25 46 15 2 46 48 9 46 14 2 46 49 9 -0.44 -172 0 0 46 14 15 16 0 32.1 54 150 -25 45 57 39 46 30 53 45 56 39 46 31 53 -0.44 -171 0 0 45 56 28 16 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7 49 25 16 9 28.2 28 281 53 7 32 22 8 6 31 7 31 20 8 7 33 -0.47 - 93 0 0 7 21 35 16 9 32.5 27 281 54 7 4 35 7 38 38 7 3 33 7 39 40 -0.47 - 92 0 0 6 54 12 16 9 36.7 26 282 55 6 37 15 7 11 12 6 36 14 7 12 14 -0.47 - 91 0 0 6 27 17 16 9 40.8 25 282 56 6 10 22 6 44 14 6 9 22 6 45 15 -0.47 - 90 0 0 6 0 50 16 9 44.6 24 282 57 5 43 58 6 17 43 5 42 58 6 18 44 -0.47 - 89 0 0 5 34 51 16 9 48.3 23 282 58 5 18 3 5 51 42 5 17 2 5 52 43 -0.47 - 88 0 0 5 9 21 16 9 51.8 22 282 59 4 52 36 5 26 9 4 51 36 5 27 10 -0.47 - 87 0 0 4 44 21 16 9 55.2 21 282 60 4 27 39 5 1 6 4 26 39 5 2 6 -0.47 - 86 0 0 4 19 51 16 9 58.4 20 283 61 4 3 12 4 36 32 4 2 12 4 37 33 -0.47 - 85 0 0 3 55 51 16 10 1.4 19 283 62 3 39 15 4 12 29 3 38 15 4 13 29 -0.47 - 84 0 0 3 32 21 16 10 4.2 17 283 63 3 15 48 3 48 56 3 14 48 3 49 56 -0.47 - 83 0 0 3 9 22 16 10 6.9 16 283 64 2 52 52 3 25 54 2 51 52 3 26 54 -0.48 - 82 0 0 2 46 54 16 10 9.4 15 283 65 2 30 27 3 3 24 2 29 27 3 4 23 -0.48 - 81 0 0 2 24 57 16 10 11.7 14 283 66 2 8 33 2 41 24 2 7 34 2 42 23 -0.48 - 80 0 0 2 3 32 16 10 13.8 13 283 66 1 47 10 2 19 56 1 46 12 2 20 55 -0.48 - 79 0 0 1 42 39 16 10 15.8 12 283 67 1 26 20 1 59 0 1 25 21 1 59 59 -0.48 - 78 0 0 1 22 17 16 10 17.6 11 283 68 1 6 1 1 38 35 1 5 2 1 39 34 -0.48 - 77 0 0 1 2 27 16 10 19.3 10 283 69 0 46 14 1 18 43 0 45 15 1 19 42 -0.49 - 76 0 0 0 43 10 16 10 20.7 9 283 70 0 26 59 0 59 23 0 26 1 1 0 22 -0.49 - 75 0 0 0 24 25 16 10 22.0 8 283 70 0 8 17 0 40 36 0 7 19 0 41 34 -0.50 - 74 0 0 0 6 12 16 10 23.2 7 283 71 - 0 9 53 0 22 20 - 0 10 51 0 23 19 -0.50 - 73 0 0 - 0 11 28 16 10 24.2 6 283 72 - 0 27 31 0 4 38 - 0 28 29 0 5 36 -0.51 - 72 0 0 - 0 28 35 16 10 25.0 5 283 72 - 0 44 36 - 0 12 32 - 0 45 34 - 0 11 34 -0.52 - 71 0 0 - 0 45 10 16 10 25.6 4 283 73 - 1 1 8 - 0 29 9 - 1 2 6 - 0 28 11 -0.54 - 70 0 0 - 1 1 11 16 10 26.1 3 283 73 - 1 17 8 - 0 45 13 - 1 18 5 - 0 44 15 -0.57 - 69 0 0 - 1 16 40 16 10 26.5 2 283 74 - 1 32 35 - 1 0 44 - 1 33 32 - 0 59 47 -0.64 - 68 0 0 - 1 31 37 16 10 26.6 1 283 74 - 1 47 29 - 1 15 42 - 1 48 26 - 1 14 45 -0.95 Uncertainty in time = +/- 1 secs Prediction of 2023 Sep 17.8 Data for the target star ------------------------ * name: TYC 0818-01370-1 * constellation : Cancer * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 09 03 24.2891 DE: +13 25 56.165 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 09 03 24.2894 DE: +13 25 56.164 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 10.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (248) Lameia asteroid class: approx. diameter [km]: 52 approx. diameter ["]: 0.031 distance from Earth [AU]: 2.33590 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#120 date of fit: 2023 Aug 22 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): 0.006", 0.001", 108.617° remarks: * orbital elements for (248)Lameia : Mean anomaly = 218.4298888262 deg Arg. of pericenter = 11.5708990279 deg Long. of node = 246.6367905207 deg Inclination = 4.0654418407 deg Eccentricity = 0.0677231005 Semimajor axis = 2.4697000106 AU Perihelion dist = 2.3024442686 AU Mag: H = 10.33, G = 0.15 Epoch of elements : MJD 60259.66923611 TDT (2023 Nov 11.6692) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1202023Aug22,3.61,2023,11,11,16.061095,0.173297,0.364573,7.313775,-3.491558,-0.005570,0.001697,0.000000,0.000000 -155.2809,13.3391,-64.91,-17.47,False TYC 0818-01370-1,9.05674696,13.4322681,0.00,10.92,0.00,0.0,0,,9.07850466,13.3391316,4.42,0.00,0,0,0 248,Lameia,15.32,51.900,2.3359,0,0,1.887,-13.15,,2.6,0 0,218.2599,2023,11,11,11.5709,246.6368,4.0654,0.06772,2.46970,2.30244,10.33,5.0,0.15 1.030,0.0060,0.0006,109,0.0060,Known errors,-1.00,0,-1,-1 20231111_1370-1,60204.81 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Sep 17, 19:25 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org