IOTA/IOTA-ES occultation update for (704) Interamnia / UCAC4-611-027899 event on 2023 Nov 26, 11:29 UT Visible from SE Canada, N USA Summary ------- On 2023 Nov 26 UT, the 329.3 km diameter asteroid (704) Interamnia will occult a 12.5 mag star in the constellation Auriga for observers along a path across SE Canada, N USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.16 mag to 10.53 mag (the magnitude of the asteroid) for at most 30.230 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 26, 11:19 - 2023 Nov 26, 11:40 * geocentric midpoint of event [JD]: 2460274.97913120 * magnitude of target star: 12.50 * magnitude drop [mag]: 0.16 * estimated maximum duration [s]: 30.230 * Moon: 99 % sunlit, 38° distance * Sun: 152° distance * rough path description: SE Canada, N USA Additional comments ------------------- low mag drop The occultation path -------------------- * approximate projected width [km]: 333 * 1 sigma uncertainty interval [path widths]: +/- 0.03 * 1 sigma uncertainty interval [seconds]: +/- 1.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.001", 108°) * approx speed of asteroid's shadow [km/s]: 10.8949 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4-611-027899 by 704 Interamnia on 2023 Nov 26 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 0 0 0 .. .. .... .. .. .. .. .. .. - 8 17 58 .. .. .. - 8 11 35 .. .. .. .... 127 0 0 - 9 26 44 11 39 36.2 1 57 -28 - 7 39 20 .. .. .. - 7 32 55 .. .. .. .... 128 0 0 - 8 47 57 11 39 36.0 2 57 -29 - 7 0 12 -10 35 13 - 6 53 45 -10 41 36 -0.17 129 0 0 - 8 8 40 11 39 35.5 3 57 -30 - 6 20 33 - 9 56 17 - 6 14 5 -10 2 41 -0.15 130 0 0 - 7 28 53 11 39 34.7 4 57 -32 - 5 40 25 - 9 16 51 - 5 33 56 - 9 23 17 -0.14 131 0 0 - 6 48 38 11 39 33.7 5 57 -33 - 4 59 50 - 8 36 57 - 4 53 20 - 8 43 23 -0.14 132 0 0 - 6 7 56 11 39 32.4 7 57 -34 - 4 18 48 - 7 56 34 - 4 12 16 - 8 3 2 -0.14 133 0 0 - 5 26 48 11 39 30.8 8 56 -35 - 3 37 21 - 7 15 45 - 3 30 48 - 7 22 14 -0.13 134 0 0 - 4 45 15 11 39 29.0 9 56 -36 - 2 55 29 - 6 34 30 - 2 48 55 - 6 41 0 -0.13 135 0 0 - 4 3 19 11 39 26.9 10 56 -38 - 2 13 15 - 5 52 51 - 2 6 40 - 5 59 22 -0.13 136 0 0 - 3 21 0 11 39 24.6 11 56 -39 - 1 30 39 - 5 10 49 - 1 24 3 - 5 17 21 -0.13 137 0 0 - 2 38 20 11 39 22.0 13 56 -40 - 0 47 43 - 4 28 26 - 0 41 6 - 4 34 59 -0.13 138 0 0 - 1 55 21 11 39 19.1 14 56 -41 - 0 4 29 - 3 45 42 0 2 9 - 3 52 15 -0.13 139 0 0 - 1 12 4 11 39 15.9 15 56 -43 0 39 3 - 3 2 39 0 45 41 - 3 9 13 -0.13 140 0 0 - 0 28 30 11 39 12.5 16 56 -44 1 22 50 - 2 19 18 1 29 30 - 2 25 54 -0.13 141 0 0 0 15 19 11 39 8.9 18 56 -45 2 6 52 - 1 35 42 2 13 32 - 1 42 18 -0.13 142 0 0 0 59 21 11 39 4.9 19 56 -46 2 51 6 - 0 51 51 2 57 47 - 0 58 28 -0.13 143 0 0 1 43 35 11 39 0.7 20 56 -47 3 35 31 - 0 7 48 3 42 12 - 0 14 25 -0.13 144 0 0 2 28 0 11 38 56.3 21 56 -49 4 20 5 0 36 27 4 26 47 0 29 49 -0.13 145 0 0 3 12 33 11 38 51.6 22 56 -50 5 4 47 1 20 52 5 11 30 1 14 14 -0.13 146 0 0 3 57 13 11 38 46.6 24 56 -51 5 49 35 2 5 25 5 56 18 1 58 46 -0.12 147 0 0 4 41 59 11 38 41.4 25 57 -52 6 34 28 2 50 4 6 41 11 2 43 25 -0.12 148 0 0 5 26 49 11 38 36.0 26 57 -53 7 19 23 3 34 48 7 26 6 3 28 9 -0.12 149 0 0 6 11 40 11 38 30.3 27 57 -55 8 4 19 4 19 35 8 11 3 4 12 56 -0.12 150 0 0 6 56 32 11 38 24.4 29 57 -56 8 49 14 5 4 24 8 55 59 4 57 44 -0.13 151 0 0 7 41 23 11 38 18.3 30 57 -57 9 34 8 5 49 13 9 40 52 5 42 33 -0.13 152 0 0 8 26 11 11 38 11.9 31 57 -58 10 18 57 6 34 0 10 25 42 6 27 19 -0.13 153 0 0 9 10 55 11 38 5.4 32 58 -59 11 3 41 7 18 43 11 10 26 7 12 3 -0.13 154 0 0 9 55 33 11 37 58.6 33 58 -61 11 48 18 8 3 21 11 55 3 7 56 41 -0.13 155 0 0 10 40 3 11 37 51.6 35 58 -62 12 32 46 8 47 53 12 39 31 8 41 13 -0.13 156 0 0 11 24 23 11 37 44.5 36 58 -63 13 17 4 9 32 17 13 23 48 9 25 37 -0.13 157 0 0 12 8 33 11 37 37.1 37 59 -64 14 1 10 10 16 31 14 7 54 10 9 51 -0.13 158 0 0 12 52 31 11 37 29.6 38 59 -65 14 45 3 11 0 34 14 51 47 10 53 54 -0.13 159 0 0 13 36 15 11 37 21.9 39 59 -66 15 28 41 11 44 24 15 35 25 11 37 44 -0.13 160 0 0 14 19 44 11 37 14.1 40 60 -68 16 12 3 12 27 59 16 18 46 12 21 21 -0.13 161 0 0 15 2 56 11 37 6.1 42 60 -69 16 55 8 13 11 20 17 1 51 13 4 41 -0.13 162 0 0 15 45 51 11 36 57.9 43 60 -70 17 37 54 13 54 23 17 44 36 13 47 45 -0.13 163 0 0 16 28 26 11 36 49.7 44 61 -71 18 20 19 14 37 8 18 27 1 14 30 31 -0.13 164 0 0 17 10 41 11 36 41.3 45 61 -72 19 2 24 15 19 33 19 9 5 15 12 57 -0.13 165 0 0 17 52 34 11 36 32.7 46 62 -73 19 44 6 16 1 38 19 50 46 15 55 2 -0.13 166 0 0 18 34 5 11 36 24.1 47 62 -74 20 25 24 16 43 21 20 32 3 16 36 46 -0.13 167 0 0 19 15 11 11 36 15.4 49 63 -75 21 6 17 17 24 41 21 12 56 17 18 6 -0.13 168 0 0 19 55 53 11 36 6.5 50 63 -76 21 46 45 18 5 36 21 53 23 17 59 3 -0.13 169 0 0 20 36 9 11 35 57.6 51 64 -77 22 26 46 18 46 6 22 33 23 18 39 34 -0.13 170 0 0 21 15 58 11 35 48.6 52 64 -78 23 6 20 19 26 11 23 12 56 19 19 39 -0.13 171 0 0 21 55 19 11 35 39.6 53 65 -79 23 45 25 20 5 48 23 52 0 19 59 17 -0.13 172 0 0 22 34 12 11 35 30.4 54 66 -80 24 24 1 20 44 57 24 30 35 20 38 28 -0.13 173 0 0 23 12 35 11 35 21.2 55 66 -80 25 2 7 21 23 38 25 8 40 21 17 9 -0.13 174 0 0 23 50 28 11 35 12.0 56 67 -81 25 39 43 22 1 49 25 46 14 21 55 21 -0.13 175 0 0 24 27 51 11 35 2.7 57 68 -82 26 16 47 22 39 30 26 23 17 22 33 3 -0.13 176 0 0 25 4 42 11 34 53.4 58 69 -82 26 53 19 23 16 40 26 59 48 23 10 15 -0.13 177 0 0 25 41 2 11 34 44.1 59 69 -82 27 29 19 23 53 19 27 35 47 23 46 55 -0.13 178 0 0 26 16 49 11 34 34.7 60 70 -83 28 4 46 24 29 25 28 11 13 24 23 2 -0.13 179 0 0 26 52 3 11 34 25.4 61 71 -83 28 39 39 25 5 0 28 46 5 24 58 38 -0.14 -180 0 0 27 26 43 11 34 16.0 62 72 -83 29 13 59 25 40 1 29 20 24 25 33 40 -0.14 -179 0 0 28 0 50 11 34 6.6 63 73 -82 29 47 45 26 14 29 29 54 9 26 8 10 -0.14 -178 0 0 28 34 24 11 33 57.2 64 74 -82 30 20 57 26 48 23 30 27 19 26 42 5 -0.14 -177 0 0 29 7 22 11 33 47.8 65 75 -82 30 53 34 27 21 44 30 59 55 27 15 27 -0.14 -176 0 0 29 39 47 11 33 38.5 66 76 -81 31 25 36 27 54 30 31 31 56 27 48 14 -0.14 -175 0 0 30 11 36 11 33 29.1 67 78 -81 31 57 4 28 26 41 32 3 22 28 20 27 -0.14 -174 0 0 30 42 51 11 33 19.8 68 79 -80 32 27 56 28 58 18 32 34 13 28 52 5 -0.14 -173 0 0 31 13 31 11 33 10.5 69 80 -79 32 58 13 29 29 20 33 4 29 29 23 8 -0.14 -172 0 0 31 43 35 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38 44 46 35 13 46 -0.15 -159 0 0 37 21 33 11 31 4.4 79 115 -68 39 0 59 35 42 34 39 6 56 35 36 41 -0.15 -158 0 0 37 43 32 11 30 55.8 80 119 -67 39 22 37 36 4 55 39 28 32 35 59 3 -0.15 -157 0 0 38 4 57 11 30 47.2 80 124 -66 39 43 41 36 26 41 39 49 35 36 20 50 -0.15 -156 0 0 38 25 50 11 30 38.7 80 129 -65 40 4 12 36 47 54 40 10 5 36 42 5 -0.15 -155 0 0 38 46 9 11 30 30.3 81 134 -65 40 24 10 37 8 34 40 30 2 37 2 46 -0.15 -154 0 0 39 5 55 11 30 21.9 81 140 -64 40 43 36 37 28 41 40 49 26 37 22 54 -0.15 -153 0 0 39 25 9 11 30 13.6 81 146 -63 41 2 30 37 48 14 41 8 19 37 42 29 -0.15 -152 0 0 39 43 51 11 30 5.4 81 152 -62 41 20 52 38 7 16 41 26 40 38 1 31 -0.15 -151 0 0 40 2 1 11 29 57.2 81 158 -62 41 38 42 38 25 45 41 44 29 38 20 1 -0.15 -150 0 0 40 19 39 11 29 49.1 81 164 -61 41 56 1 38 43 41 42 1 46 38 37 59 -0.15 -149 0 0 40 36 45 11 29 41.0 81 170 -60 42 12 48 39 1 6 42 18 33 38 55 25 -0.15 -148 0 0 40 53 20 11 29 33.0 81 176 -59 42 29 5 39 18 0 42 34 49 39 12 20 -0.15 -147 0 0 41 9 25 11 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51 30 13 53 26 26 29 -0.15 - 46 0 0 27 44 57 11 20 22.8 7 303 20 29 32 55 25 57 29 29 39 22 25 51 5 -0.15 - 45 0 0 27 9 21 11 20 21.5 6 303 21 28 57 44 25 21 29 29 4 12 25 15 4 -0.16 - 44 0 0 26 33 8 11 20 20.4 5 303 22 28 21 55 24 44 51 28 28 25 24 38 25 -0.17 - 43 0 0 25 56 17 11 20 19.4 4 304 23 27 45 28 24 7 37 27 52 0 24 1 9 -0.18 - 42 0 0 25 18 50 11 20 18.7 3 304 24 27 8 24 23 29 46 27 14 57 23 23 17 -0.20 - 41 0 0 24 40 46 11 20 18.1 2 305 25 26 30 44 22 51 20 26 37 18 22 44 49 -0.24 - 40 0 0 24 2 7 11 20 17.8 1 305 26 25 52 27 .. .. .. 25 59 3 .. .. .. -0.39 0 0 0 .. .. .... .. .. .. .. .. .. 25 13 34 .. .. .. 25 20 11 .. .. .. .... Uncertainty in time = +/- 1 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: UCAC4-611-027899 * constellation : Auriga * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 59 27.5248 DE: +32 10 49.516 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 59 27.5249 DE: +32 10 49.516 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (704) Interamnia asteroid class: ShapeModel approx. diameter [km]: 329 approx. diameter ["]: 0.240 distance from Earth [AU]: 1.89010 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#164 date of fit: 2023 Oct 11 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): 0.012", 0.001", 107.715° remarks: * orbital elements for (704)Interamnia : Mean anomaly = 50.0711048045 deg Arg. of pericenter = 94.3433189668 deg Long. of node = 280.1689615941 deg Inclination = 17.3111551380 deg Eccentricity = 0.1558016647 Semimajor axis = 3.0575314936 AU Perihelion dist = 2.5811629970 AU Mag: H = 6.36, G = -0.02 Epoch of elements : MJD 60274.47902778 TDT (2023 Nov 26.4790) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1642023Oct11,30.23,2023,11,26,11.499149,-0.048165,0.134102,-5.788096,-2.076701,-0.002599,-0.000798,0.000001,0.000000 -147.3686,32.1821,4.32,-20.94,False UCAC4-611-027899,5.99097911,32.1804211,0.00,12.50,0.00,0.0,0,,6.01721630,32.1821316,0.16,0.00,0,0,0 704,Interamnia,10.53,329.300,1.8901,0,0,-2.121,-9.67,,16.6,0 0,49.9828,2023,11,26,94.3433,280.1690,17.3112,0.15580,3.05753,2.58116,6.29,5.0,0.15 1.030,0.0117,0.0012,108,0.0117,Known errors,-1.00,0,-1,-1 20231126_027899,60232.88 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 21:09 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org