IOTA/IOTA-ES occultation update for (387) Aquitania / TYC 789-00947-1 event on 2024 Dec 19, 00:58 UT Visible from Summary ------- On 2024 Dec 19 UT, the 101.845 km diameter asteroid (387) Aquitania will occult a 11.4 mag star in the constellation Cancer for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 1.70 mag to 12.86 mag (the magnitude of the asteroid) for at most 8.490 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: 2024 Dec 19, 00:50 - 2024 Dec 19, 01:07 * geocentric midpoint of event [JD]: 2460663.54094029 * magnitude of target star: 11.42 * magnitude drop [mag]: 1.70 * estimated maximum duration [s]: 8.490 * Moon: 84 % sunlit, 17° distance * Sun: 145° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 109 * 1 sigma uncertainty interval [path widths]: +/- 0.07 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.009, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.009", 0.002", 91°) * approx speed of asteroid's shadow [km/s]: 11.9892 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 789-00947-1 by 387 Aquitania on 2024 Dec 19 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 - 73 0 0 3 44 58 1 7 15.2 0 77 -33 4 15 17 3 14 32 4 19 41 3 10 6 .... - 72 0 0 3 58 37 1 7 15.1 1 77 -34 4 28 52 3 28 15 4 33 16 3 23 49 0.15 - 71 0 0 4 11 45 1 7 14.8 2 77 -35 4 41 57 3 41 27 4 46 21 3 37 1 0.26 - 70 0 0 4 24 23 1 7 14.3 3 77 -36 4 54 32 3 54 8 4 58 55 3 49 43 0.30 - 69 0 0 4 36 30 1 7 13.7 4 77 -37 5 6 36 4 6 18 5 10 58 4 1 54 0.32 - 68 0 0 4 48 6 1 7 12.8 5 77 -38 5 18 9 4 17 57 5 22 31 4 13 33 0.33 - 67 0 0 4 59 12 1 7 11.8 6 77 -39 5 29 12 4 29 6 5 33 33 4 24 42 0.34 - 66 0 0 5 9 47 1 7 10.7 7 77 -40 5 39 44 4 39 43 5 44 5 4 35 20 0.35 - 65 0 0 5 19 51 1 7 9.3 8 78 -41 5 49 45 4 49 50 5 54 6 4 45 28 0.35 - 64 0 0 5 29 24 1 7 7.8 9 78 -42 5 59 16 4 59 27 6 3 36 4 55 4 0.35 - 63 0 0 5 38 27 1 7 6.1 10 78 -43 6 8 17 5 8 32 6 12 37 5 4 10 0.36 - 62 0 0 5 47 0 1 7 4.3 11 78 -44 6 16 47 5 17 7 6 21 6 5 12 45 0.36 - 61 0 0 5 55 1 1 7 2.2 12 78 -45 6 24 46 5 25 11 6 29 6 5 20 50 0.36 - 60 0 0 6 2 33 1 7 0.1 13 78 -46 6 32 15 5 32 44 6 36 34 5 28 23 0.36 - 59 0 0 6 9 34 1 6 57.7 14 78 -47 6 39 14 5 39 47 6 43 33 5 35 26 0.36 - 58 0 0 6 16 4 1 6 55.2 15 78 -47 6 45 43 5 46 19 6 50 1 5 41 59 0.36 - 57 0 0 6 22 4 1 6 52.6 16 78 -48 6 51 41 5 52 21 6 56 0 5 48 1 0.37 - 56 0 0 6 27 34 1 6 49.8 17 78 -49 6 57 9 5 57 52 7 1 27 5 53 32 0.37 - 55 0 0 6 32 33 1 6 46.8 18 78 -50 7 2 7 6 2 53 7 6 25 5 58 33 0.37 - 54 0 0 6 37 2 1 6 43.7 19 78 -51 7 6 35 6 7 24 7 10 53 6 3 4 0.37 - 53 0 0 6 41 1 1 6 40.4 20 79 -52 7 10 33 6 11 24 7 14 51 6 7 5 0.37 - 52 0 0 6 44 30 1 6 37.0 21 79 -53 7 14 1 6 14 54 7 18 18 6 10 35 0.37 - 51 0 0 6 47 29 1 6 33.4 22 79 -54 7 16 59 6 17 53 7 21 16 6 13 34 0.37 - 50 0 0 6 49 58 1 6 29.7 23 79 -55 7 19 27 6 20 23 7 23 44 6 16 4 0.37 - 49 0 0 6 51 56 1 6 25.9 24 79 -55 7 21 25 6 22 22 7 25 42 6 18 4 0.37 - 48 0 0 6 53 25 1 6 21.9 25 79 -56 7 22 53 6 23 52 7 27 10 6 19 33 0.37 - 47 0 0 6 54 24 1 6 17.7 26 79 -57 7 23 52 6 24 51 7 28 9 6 20 33 0.37 - 46 0 0 6 54 54 1 6 13.4 27 79 -58 7 24 21 6 25 21 7 28 37 6 21 2 0.37 - 45 0 0 6 54 53 1 6 9.0 28 79 -59 7 24 20 6 25 20 7 28 37 6 21 2 0.37 - 44 0 0 6 54 23 1 6 4.4 29 79 -59 7 23 50 6 24 50 7 28 6 6 20 32 0.37 - 43 0 0 6 53 23 1 5 59.7 30 79 -60 7 22 50 6 23 50 7 27 7 6 19 32 0.37 - 42 0 0 6 51 53 1 5 54.8 31 79 -61 7 21 20 6 22 20 7 25 37 6 18 2 0.37 - 41 0 0 6 49 54 1 5 49.9 32 79 -62 7 19 22 6 20 21 7 23 39 6 16 2 0.37 - 40 0 0 6 47 26 1 5 44.7 33 79 -62 7 16 54 6 17 52 7 21 10 6 13 33 0.37 - 39 0 0 6 44 28 1 5 39.5 33 79 -63 7 13 56 6 14 53 7 18 13 6 10 35 0.37 - 38 0 0 6 41 0 1 5 34.1 34 79 -64 7 10 29 6 11 25 7 14 46 6 7 6 0.37 - 37 0 0 6 37 3 1 5 28.6 35 79 -65 7 6 33 6 7 28 7 10 51 6 3 9 0.37 - 36 0 0 6 32 37 1 5 22.9 36 79 -65 7 2 8 6 3 1 7 6 26 5 58 42 0.37 - 35 0 0 6 27 42 1 5 17.1 37 78 -66 6 57 14 5 58 4 7 1 32 5 53 45 0.37 - 34 0 0 6 22 18 1 5 11.2 38 78 -66 6 51 51 5 52 39 6 56 9 5 48 19 0.37 - 33 0 0 6 16 24 1 5 5.2 39 78 -67 6 45 59 5 46 44 6 50 17 5 42 24 0.37 - 32 0 0 6 10 2 1 4 59.1 40 78 -67 6 39 38 5 40 20 6 43 56 5 36 0 0.37 - 31 0 0 6 3 10 1 4 52.8 41 78 -68 6 32 48 5 33 27 6 37 6 5 29 7 0.37 - 30 0 0 5 55 50 1 4 46.4 42 78 -68 6 25 29 5 26 5 6 29 47 5 21 45 0.37 - 29 0 0 5 48 0 1 4 39.9 43 78 -69 6 17 41 5 18 14 6 22 0 5 13 53 0.37 - 28 0 0 5 39 42 1 4 33.2 44 77 -69 6 9 25 5 9 54 6 13 44 5 5 33 0.37 - 27 0 0 5 30 55 1 4 26.5 45 77 -70 6 0 40 5 1 5 6 4 59 4 56 44 0.37 - 26 0 0 5 21 40 1 4 19.6 46 77 -70 5 51 26 4 51 47 5 55 46 4 47 26 0.37 - 25 0 0 5 11 56 1 4 12.6 46 76 -70 5 41 45 4 42 1 5 46 4 4 37 39 0.37 - 24 0 0 5 1 43 1 4 5.5 47 76 -70 5 31 34 4 31 46 5 35 54 4 27 24 0.37 - 23 0 0 4 51 2 1 3 58.3 48 76 -70 5 20 56 4 21 3 5 25 16 4 16 40 0.37 - 22 0 0 4 39 53 1 3 51.0 49 75 -71 5 9 49 4 9 51 5 14 10 4 5 28 0.37 - 21 0 0 4 28 15 1 3 43.5 50 75 -71 4 58 14 3 58 11 5 2 35 3 53 48 0.37 - 20 0 0 4 16 10 1 3 36.0 51 74 -71 4 46 11 3 46 2 4 50 32 3 41 39 0.37 - 19 0 0 4 3 36 1 3 28.4 52 74 -70 4 33 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20 43 -34 36 41 0.39 71 0 0 -34 23 44 0 51 26.8 23 306 9 -33 50 42 -34 56 54 -33 45 54 -35 1 45 0.39 72 0 0 -34 48 31 0 51 23.2 23 306 10 -34 15 32 -35 21 38 -34 10 45 -35 26 28 0.39 73 0 0 -35 12 58 0 51 19.9 22 305 11 -34 40 3 -35 46 1 -34 35 16 -35 50 50 0.39 74 0 0 -35 37 3 0 51 16.7 21 304 11 -35 4 12 -36 10 2 -34 59 26 -36 14 51 0.39 75 0 0 -36 0 48 0 51 13.6 20 304 12 -35 28 1 -36 33 43 -35 23 15 -36 38 31 0.39 76 0 0 -36 24 11 0 51 10.7 19 303 13 -35 51 28 -36 57 2 -35 46 43 -37 1 50 0.39 77 0 0 -36 47 12 0 51 7.9 18 303 14 -36 14 33 -37 19 59 -36 9 49 -37 24 46 0.39 78 0 0 -37 9 52 0 51 5.3 17 302 15 -36 37 17 -37 42 35 -36 32 33 -37 47 21 0.39 79 0 0 -37 32 9 0 51 2.8 16 301 16 -36 59 38 -38 4 48 -36 54 55 -38 9 33 0.39 80 0 0 -37 54 4 0 51 0.4 16 301 17 -37 21 37 -38 26 38 -37 16 55 -38 31 23 0.39 81 0 0 -38 15 36 0 50 58.2 15 300 18 -37 43 14 -38 48 6 -37 38 32 -38 52 51 0.39 82 0 0 -38 36 46 0 50 56.2 14 299 18 -38 4 28 -39 9 11 -37 59 47 -39 13 55 0.39 83 0 0 -38 57 32 0 50 54.2 13 299 19 -38 25 19 -39 29 53 -38 20 38 -39 34 36 0.39 84 0 0 -39 17 56 0 50 52.4 12 298 20 -38 45 47 -39 50 12 -38 41 7 -39 54 55 0.39 85 0 0 -39 37 56 0 50 50.7 11 298 21 -39 5 52 -40 10 8 -39 1 13 -40 14 50 0.39 86 0 0 -39 57 34 0 50 49.2 10 297 22 -39 25 34 -40 29 41 -39 20 55 -40 34 22 0.39 87 0 0 -40 16 48 0 50 47.8 10 296 22 -39 44 52 -40 48 50 -39 40 14 -40 53 30 0.39 88 0 0 -40 35 38 0 50 46.5 9 296 23 -40 3 48 -41 7 36 -39 59 10 -41 12 15 0.39 89 0 0 -40 54 5 0 50 45.3 8 295 24 -40 22 19 -41 25 58 -40 17 42 -41 30 37 0.39 90 0 0 -41 12 9 0 50 44.3 7 294 25 -40 40 27 -41 43 57 -40 35 51 -41 48 35 0.39 91 0 0 -41 29 48 0 50 43.3 6 294 26 -40 58 12 -42 1 32 -40 53 36 -42 6 10 0.39 92 0 0 -41 47 5 0 50 42.5 6 293 26 -41 15 33 -42 18 44 -41 10 58 -42 23 21 0.39 93 0 0 -42 3 58 0 50 41.8 5 292 27 -41 32 30 -42 35 32 -41 27 56 -42 40 8 0.39 94 0 0 -42 20 27 0 50 41.2 4 292 28 -41 49 4 -42 51 57 -41 44 31 -42 56 32 0.39 95 0 0 -42 36 33 0 50 40.7 3 291 29 -42 5 15 -43 7 58 -42 0 42 -43 12 33 0.40 96 0 0 -42 52 15 0 50 40.3 2 290 30 -42 21 1 -43 23 35 -42 16 29 -43 28 10 0.40 97 0 0 -43 7 34 0 50 40.1 2 290 30 -42 36 25 -43 38 50 -42 31 53 -43 43 23 0.41 98 0 0 -43 22 29 0 50 39.9 1 289 31 -42 51 25 -43 53 40 -42 46 54 -43 58 13 0.43 99 0 0 -43 37 1 0 50 39.9 0 288 32 -43 6 1 .. .. .. -43 1 31 .. .. .. 0.67 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 789-00947-1 * constellation : Cancer * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 08 09 09.2036 DE: +13 06 56.045 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 08 09 09.2036 DE: +13 06 56.044 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.4 * B mag [mag]: 11.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (387) Aquitania asteroid class: Barbarian approx. diameter [km]: 102 approx. diameter ["]: 0.056 distance from Earth [AU]: 2.53000 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#130 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): 0.009", 0.002", 90.529° remarks: * orbital elements for (387)Aquitania : Mean anomaly = 188.9212609197 deg Arg. of pericenter = 157.6840861192 deg Long. of node = 127.9921543717 deg Inclination = 18.1393276492 deg Eccentricity = 0.2375364008 Semimajor axis = 2.7385526401 AU Perihelion dist = 2.0880467027 AU Mag: H = 7.57, G = 0.15 Epoch of elements : MJD 60663.04094000 TDT (2024 Dec 19.0409) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1302023Apr27,8.49,2024,12,19,0.982567,-0.144854,-0.319755,-6.165730,2.788612,-0.003222,0.001319,0.000001,0.000000 19.7756,13.0423,164.54,-23.42,False TYC 789-00947-1,8.15255654,13.1155680,11.68,11.42,11.28,0.0,0,,8.17603424,13.0423343,1.70,1.46,0,0,0 387,Aquitania,12.86,101.845,2.5300,0,0,-1.466,9.69,,5.2,0 0,188.6949,2024,12,18,157.6841,127.9922,18.1393,0.23754,2.73855,2.08805,7.57,5.0,0.15 1.073,0.0090,0.0019,91,0.0040,Known errors,1.12,0,-1,-1 20241219_0947-1,60140.75 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:53 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org