IOTA/IOTA-ES occultation update for (5057) Weeks / TYC 709-00688-1 event on 2024 Dec 08, 16:59 UT Visible from Summary ------- On 2024 Dec 08 UT, the 17.031 km diameter asteroid (5057) Weeks will occult a 11.5 mag star in the constellation Orion for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.84 mag to 16.29 mag (the magnitude of the asteroid) for at most 1.620 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 Dec 08, 16:50 - 2024 Dec 08, 17:07 * geocentric midpoint of event [JD]: 2460653.20797266 * magnitude of target star: 11.46 * magnitude drop [mag]: 4.84 * estimated maximum duration [s]: 1.620 * Moon: 51 % sunlit, 96° distance * Sun: 167° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 21 * 1 sigma uncertainty interval [path widths]: +/- 0.21 * 1 sigma uncertainty interval [seconds]: +/- 4.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.038, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.038", 0.002", 85°) * approx speed of asteroid's shadow [km/s]: 10.5044 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 709-00688-1 by 5057 Weeks on 2024 Dec 8 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 29 0 0 -35 35 46 17 7 47.0 1 74 0 -35 29 54 -35 41 38 -35 27 27 -35 44 5 .... 30 0 0 -35 22 5 17 7 46.9 1 74 -1 -35 16 14 -35 27 58 -35 13 47 -35 30 25 0.41 31 0 0 -35 8 24 17 7 46.5 2 73 -2 -35 2 33 -35 14 16 -35 0 6 -35 16 43 0.52 32 0 0 -34 54 42 17 7 46.0 3 72 -3 -34 48 51 -35 0 34 -34 46 24 -35 3 1 0.57 33 0 0 -34 40 59 17 7 45.4 4 72 -4 -34 35 8 -34 46 51 -34 32 41 -34 49 19 0.60 34 0 0 -34 27 17 17 7 44.5 5 71 -4 -34 21 25 -34 33 9 -34 18 59 -34 35 36 0.62 35 0 0 -34 13 34 17 7 43.5 6 71 -5 -34 7 43 -34 19 26 -34 5 16 -34 21 53 0.63 36 0 0 -33 59 52 17 7 42.4 7 70 -6 -33 54 1 -34 5 44 -33 51 34 -34 8 11 0.64 37 0 0 -33 46 10 17 7 41.0 7 70 -7 -33 40 19 -33 52 2 -33 37 53 -33 54 29 0.65 38 0 0 -33 32 30 17 7 39.6 8 69 -8 -33 26 39 -33 38 21 -33 24 12 -33 40 48 0.66 39 0 0 -33 18 50 17 7 37.9 9 68 -9 -33 12 59 -33 24 42 -33 10 33 -33 27 9 0.66 40 0 0 -33 5 12 17 7 36.1 10 68 -9 -32 59 21 -33 11 4 -32 56 55 -33 13 31 0.66 41 0 0 -32 51 36 17 7 34.1 11 67 -10 -32 45 46 -32 57 27 -32 43 19 -32 59 54 0.67 42 0 0 -32 38 2 17 7 31.9 12 67 -11 -32 32 12 -32 43 53 -32 29 45 -32 46 20 0.67 43 0 0 -32 24 31 17 7 29.6 12 66 -12 -32 18 40 -32 30 22 -32 16 14 -32 32 48 0.67 44 0 0 -32 11 2 17 7 27.1 13 66 -13 -32 5 12 -32 16 53 -32 2 45 -32 19 19 0.67 45 0 0 -31 57 36 17 7 24.4 14 65 -13 -31 51 46 -32 3 27 -31 49 20 -32 5 53 0.68 46 0 0 -31 44 14 17 7 21.6 15 65 -14 -31 38 24 -31 50 4 -31 35 58 -31 52 31 0.68 47 0 0 -31 30 55 17 7 18.6 16 64 -15 -31 25 5 -31 36 45 -31 22 39 -31 39 12 0.68 48 0 0 -31 17 40 17 7 15.5 17 63 -16 -31 11 50 -31 23 30 -31 9 24 -31 25 56 0.68 49 0 0 -31 4 29 17 7 12.1 18 63 -17 -30 58 39 -31 10 19 -30 56 14 -31 12 45 0.68 50 0 0 -30 51 22 17 7 8.7 18 62 -17 -30 45 33 -30 57 12 -30 43 7 -30 59 38 0.68 51 0 0 -30 38 21 17 7 5.0 19 62 -18 -30 32 31 -30 44 10 -30 30 6 -30 46 36 0.68 52 0 0 -30 25 24 17 7 1.2 20 61 -19 -30 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18 38 -22 5 3 -22 21 0 0.69 115 0 0 -22 11 44 16 59 3.9 55 354 -44 -22 6 7 -22 17 22 -22 3 46 -22 19 43 0.69 116 0 0 -22 10 42 16 58 54.4 55 352 -43 -22 5 4 -22 16 19 -22 2 44 -22 18 41 0.69 117 0 0 -22 9 54 16 58 45.0 55 350 -43 -22 4 17 -22 15 32 -22 1 56 -22 17 53 0.69 118 0 0 -22 9 21 16 58 35.7 55 349 -43 -22 3 43 -22 14 58 -22 1 23 -22 17 19 0.70 119 0 0 -22 9 2 16 58 26.3 55 347 -43 -22 3 25 -22 14 39 -22 1 4 -22 17 1 0.70 120 0 0 -22 8 58 16 58 16.9 54 346 -42 -22 3 20 -22 14 35 -22 0 59 -22 16 56 0.70 121 0 0 -22 9 8 16 58 7.6 54 344 -42 -22 3 30 -22 14 45 -22 1 10 -22 17 7 0.70 122 0 0 -22 9 32 16 57 58.3 54 343 -42 -22 3 55 -22 15 10 -22 1 34 -22 17 31 0.70 123 0 0 -22 10 12 16 57 49.0 54 341 -41 -22 4 34 -22 15 49 -22 2 14 -22 18 11 0.70 124 0 0 -22 11 5 16 57 39.8 53 340 -41 -22 5 28 -22 16 43 -22 3 7 -22 19 4 0.70 125 0 0 -22 12 14 16 57 30.6 53 338 -41 -22 6 36 -22 17 51 -22 4 15 -22 20 13 0.70 126 0 0 -22 13 36 16 57 21.5 53 337 -40 -22 7 59 -22 19 14 -22 5 38 -22 21 35 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45 4 0.71 163 0 0 -25 46 30 16 52 40.1 28 302 -16 -25 40 47 -25 52 14 -25 38 23 -25 54 38 0.71 164 0 0 -25 56 15 16 52 34.7 27 301 -15 -25 50 32 -26 2 0 -25 48 8 -26 4 23 0.71 165 0 0 -26 6 11 16 52 29.5 26 301 -14 -26 0 27 -26 11 56 -25 58 3 -26 14 20 0.71 166 0 0 -26 16 17 16 52 24.5 26 300 -13 -26 10 33 -26 22 2 -26 8 9 -26 24 26 0.71 167 0 0 -26 26 34 16 52 19.6 25 300 -12 -26 20 50 -26 32 19 -26 18 26 -26 34 43 0.71 168 0 0 -26 37 1 16 52 14.9 24 299 -12 -26 31 16 -26 42 46 -26 28 52 -26 45 11 0.71 169 0 0 -26 47 38 16 52 10.3 23 299 -11 -26 41 53 -26 53 24 -26 39 29 -26 55 48 0.71 170 0 0 -26 58 25 16 52 5.8 22 298 -10 -26 52 40 -27 4 11 -26 50 16 -27 6 35 0.71 171 0 0 -27 9 22 16 52 1.6 21 297 -9 -27 3 36 -27 15 8 -27 1 12 -27 17 32 0.71 172 0 0 -27 20 28 16 51 57.5 20 297 -8 -27 14 42 -27 26 14 -27 12 18 -27 28 39 0.71 173 0 0 -27 31 43 16 51 53.6 20 296 -7 -27 25 57 -27 37 30 -27 23 33 -27 39 54 0.71 174 0 0 -27 43 7 16 51 49.8 19 296 -7 -27 37 21 -27 48 54 -27 34 56 -27 51 19 0.71 175 0 0 -27 54 40 16 51 46.2 18 295 -6 -27 48 54 -28 0 27 -27 46 29 -28 2 52 0.72 176 0 0 -28 6 22 16 51 42.7 17 295 -5 -28 0 35 -28 12 9 -27 58 10 -28 14 34 0.72 177 0 0 -28 18 12 16 51 39.5 16 294 -4 -28 12 25 -28 23 59 -28 10 0 -28 26 24 0.72 178 0 0 -28 30 10 16 51 36.4 15 294 -3 -28 24 22 -28 35 57 -28 21 57 -28 38 23 0.72 179 0 0 -28 42 15 16 51 33.5 14 293 -2 -28 36 28 -28 48 3 -28 34 3 -28 50 29 0.72 180 0 0 -28 54 29 16 51 30.7 13 293 -1 -28 48 41 -29 0 17 -28 46 16 -29 2 42 0.72 -179 0 0 -29 6 49 16 51 28.1 13 292 -1 -29 1 1 -29 12 37 -28 58 36 -29 15 3 0.72 -178 0 0 -29 19 17 16 51 25.7 12 292 0 -29 13 29 -29 25 5 -29 11 3 -29 27 31 0.72 -177 0 0 -29 31 52 16 51 23.5 11 291 1 -29 26 3 -29 37 40 -29 23 38 -29 40 6 0.72 -176 0 0 -29 44 33 16 51 21.5 10 291 2 -29 38 44 -29 50 22 -29 36 18 -29 52 48 0.73 -175 0 0 -29 57 20 16 51 19.6 9 290 3 -29 51 31 -30 3 9 -29 49 5 -30 5 35 0.73 -174 0 0 -30 10 13 16 51 17.9 8 290 4 -30 4 24 -30 16 2 -30 1 58 -30 18 28 0.73 -173 0 0 -30 23 12 16 51 16.3 7 289 5 -30 17 22 -30 29 1 -30 14 57 -30 31 28 0.73 -172 0 0 -30 36 16 16 51 15.0 6 289 6 -30 30 27 -30 42 6 -30 28 1 -30 44 32 0.74 -171 0 0 -30 49 26 16 51 13.8 6 288 6 -30 43 36 -30 55 16 -30 41 10 -30 57 42 0.74 -170 0 0 -31 2 40 16 51 12.8 5 288 7 -30 56 50 -31 8 30 -30 54 24 -31 10 57 0.75 -169 0 0 -31 15 59 16 51 12.0 4 287 8 -31 10 9 -31 21 49 -31 7 43 -31 24 16 0.76 -168 0 0 -31 29 22 16 51 11.3 3 287 9 -31 23 32 -31 35 13 -31 21 6 -31 37 39 0.78 -167 0 0 -31 42 49 16 51 10.9 2 286 10 -31 36 59 -31 48 40 -31 34 33 -31 51 7 0.81 -166 0 0 -31 56 20 16 51 10.6 1 286 11 -31 50 30 -32 2 11 -31 48 3 -32 4 38 0.88 -165 0 0 -32 9 54 16 51 10.4 0 285 12 -32 4 4 -32 15 45 -32 1 37 -32 18 12 1.53 Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 709-00688-1 * constellation : Orion * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 34 45.8757 DE: +12 34 45.808 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 34 45.8757 DE: +12 34 45.808 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.5 * B mag [mag]: 11.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (5057) Weeks asteroid class: approx. diameter [km]: 17 approx. diameter ["]: 0.014 distance from Earth [AU]: 1.69200 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#49 date of fit: 2023 Apr 27 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): 0.038", 0.002", 85.151° remarks: * orbital elements for (5057)Weeks : Mean anomaly = 1.0824650047 deg Arg. of pericenter = 282.4875145288 deg Long. of node = 157.0760578555 deg Inclination = 7.0025175242 deg Eccentricity = 0.1490816631 Semimajor axis = 3.1277072617 AU Perihelion dist = 2.6614234615 AU Mag: H = 12.62, G = 0.15 Epoch of elements : MJD 60652.70797367 TDT (2024 Dec 08.7080) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#492023Apr27,1.62,2024,12,8,16.991344,0.018022,-0.569299,-5.925980,-0.187715,-0.000725,0.001060,0.000001,0.000000 111.2352,12.5970,-76.82,-22.81,False TYC 709-00688-1,5.57940992,12.5793911,11.74,11.46,11.31,0.0,0,,5.60312691,12.5969722,4.84,4.55,0,0,0 5057,Weeks,16.29,17.031,1.6920,0,0,-2.104,-0.97,,1.6,0 0,0.9563,2024,12,8,282.4875,157.0761,7.0025,0.14908,3.12771,2.66142,12.62,5.0,0.15 1.209,0.0383,0.0021,85,0.0029,Known errors,1.19,0,-1,-1 20241208_0688-1,60140.73 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:34 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org