IOTA/IOTA-ES occultation update for (481) Emita / TYC 1241-01022-1 event on 2023 Dec 23, 21:14 UT Visible from Africa Summary ------- On 2023 Dec 23 UT, the 102.4 km diameter asteroid (481) Emita will occult a 10.6 mag star in the constellation Aries for observers along a path across Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.97 mag to 12.35 mag (the magnitude of the asteroid) for at most 20.870 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: 2023 Dec 23, 20:54 - 2023 Dec 23, 21:35 * geocentric midpoint of event [JD]: 2460302.38548284 * magnitude of target star: 10.57 * magnitude drop [mag]: 1.97 * estimated maximum duration [s]: 20.870 * Moon: 89 % sunlit, 3° distance * Sun: 141° distance * rough path description: Africa The occultation path -------------------- * approximate projected width [km]: 113 * 1 sigma uncertainty interval [path widths]: +/- 0.18 * 1 sigma uncertainty interval [seconds]: +/- 2.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.021", 0.001", 65°) * approx speed of asteroid's shadow [km/s]: 4.9073 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1241-01022-1 by 481 Emita on 2023 Dec 23 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 .. .. .... .. .. .. .. .. .. 5 49 55 .. .. .. 6 1 32 .. .. .. .... - 96 0 0 5 37 28 21 34 41.2 1 71 35 6 10 11 5 4 34 6 21 45 4 52 52 .... - 95 0 0 5 57 7 21 34 40.5 2 71 34 6 29 42 5 24 22 6 41 13 5 12 42 0.33 - 94 0 0 6 16 3 21 34 39.3 3 71 33 6 48 30 5 43 25 6 59 59 5 31 48 0.39 - 93 0 0 6 34 14 21 34 37.6 4 71 32 7 6 35 6 1 44 7 18 0 5 50 10 0.42 - 92 0 0 6 51 42 21 34 35.5 5 71 31 7 23 56 6 19 20 7 35 19 6 7 48 0.43 - 91 0 0 7 8 28 21 34 33.0 6 72 30 7 40 34 6 36 12 7 51 55 6 24 43 0.44 - 90 0 0 7 24 30 21 34 30.0 7 72 29 7 56 30 6 52 21 8 7 49 6 40 54 0.45 - 89 0 0 7 39 50 21 34 26.6 8 72 28 8 11 44 7 7 47 8 23 0 6 56 23 0.46 - 88 0 0 7 54 28 21 34 22.7 9 72 27 8 26 16 7 22 31 8 37 31 7 11 10 0.46 - 87 0 0 8 8 25 21 34 18.5 10 72 26 8 40 7 7 36 34 8 51 19 7 25 14 0.46 - 86 0 0 8 21 40 21 34 13.9 11 72 25 8 53 17 7 49 54 9 4 27 7 38 37 0.47 - 85 0 0 8 34 14 21 34 8.8 12 72 24 9 5 45 8 2 34 9 16 54 7 51 18 0.47 - 84 0 0 8 46 7 21 34 3.4 13 72 23 9 17 34 8 14 32 9 28 41 8 3 18 0.47 - 83 0 0 8 57 20 21 33 57.5 14 73 22 9 28 42 8 25 50 9 39 47 8 14 38 0.47 - 82 0 0 9 7 53 21 33 51.3 15 73 22 9 39 11 8 36 27 9 50 14 8 25 17 0.47 - 81 0 0 9 17 46 21 33 44.8 16 73 21 9 48 59 8 46 25 10 0 2 8 35 15 0.47 - 80 0 0 9 27 0 21 33 37.8 17 73 20 9 58 9 8 55 42 10 9 10 8 44 34 0.47 - 79 0 0 9 35 34 21 33 30.5 18 73 19 10 6 40 9 4 20 10 17 39 8 53 14 0.47 - 78 0 0 9 43 30 21 33 22.8 19 73 18 10 14 32 9 12 19 10 25 30 9 1 14 0.47 - 77 0 0 9 50 46 21 33 14.8 20 73 17 10 21 45 9 19 39 10 32 42 9 8 35 0.47 - 76 0 0 9 57 24 21 33 6.4 21 73 16 10 28 20 9 26 20 10 39 16 9 15 17 0.47 - 75 0 0 10 3 24 21 32 57.7 22 73 15 10 34 17 9 32 23 10 45 13 9 21 21 0.47 - 74 0 0 10 8 46 21 32 48.7 23 74 14 10 39 37 9 37 48 10 50 31 9 26 47 0.47 - 73 0 0 10 13 31 21 32 39.3 24 74 13 10 44 19 9 42 34 10 55 13 9 31 34 0.47 - 72 0 0 10 17 37 21 32 29.6 25 74 13 10 48 24 9 46 43 10 59 16 9 35 44 0.47 - 71 0 0 10 21 7 21 32 19.6 25 74 12 10 51 51 9 50 14 11 2 43 9 39 16 0.47 - 70 0 0 10 23 59 21 32 9.2 26 74 11 10 54 42 9 53 8 11 5 33 9 42 10 0.47 - 69 0 0 10 26 14 21 31 58.5 27 74 10 10 56 56 9 55 25 11 7 47 9 44 27 0.47 - 68 0 0 10 27 53 21 31 47.5 28 74 9 10 58 33 9 57 5 11 9 24 9 46 8 0.47 - 67 0 0 10 28 55 21 31 36.3 29 74 8 10 59 34 9 58 8 11 10 24 9 47 11 0.47 - 66 0 0 10 29 20 21 31 24.7 30 74 7 10 59 59 9 58 34 11 10 49 9 47 37 0.47 - 65 0 0 10 29 9 21 31 12.7 31 74 7 10 59 47 9 58 24 11 10 37 9 47 27 0.47 - 64 0 0 10 28 22 21 31 0.5 32 74 6 10 59 0 9 57 37 11 9 50 9 46 41 0.47 - 63 0 0 10 26 59 21 30 48.0 33 74 5 10 57 37 9 56 14 11 8 26 9 45 18 0.47 - 62 0 0 10 25 0 21 30 35.3 34 74 4 10 55 38 9 54 15 11 6 28 9 43 19 0.47 - 61 0 0 10 22 26 21 30 22.2 34 74 3 10 53 3 9 51 40 11 3 53 9 40 44 0.46 - 60 0 0 10 19 15 21 30 8.8 35 74 2 10 49 54 9 48 29 11 0 44 9 37 33 0.46 - 59 0 0 10 15 30 21 29 55.1 36 74 2 10 46 8 9 44 43 10 56 59 9 33 46 0.46 - 58 0 0 10 11 8 21 29 41.2 37 74 1 10 41 48 9 40 21 10 52 38 9 29 24 0.46 - 57 0 0 10 6 12 21 29 27.0 38 74 0 10 36 52 9 35 23 10 47 43 9 24 26 0.46 - 56 0 0 10 0 40 21 29 12.5 39 74 -1 10 31 22 9 29 50 10 42 13 9 18 52 0.46 - 55 0 0 9 54 32 21 28 57.7 40 73 -2 10 25 16 9 23 41 10 36 8 9 12 43 0.46 - 54 0 0 9 47 50 21 28 42.7 41 73 -2 10 18 35 9 16 57 10 29 28 9 5 58 0.46 - 53 0 0 9 40 33 21 28 27.4 41 73 -3 10 11 20 9 9 38 10 22 13 8 58 38 0.46 - 52 0 0 9 32 40 21 28 11.8 42 73 -4 10 3 29 9 1 43 10 14 23 8 50 43 0.46 - 51 0 0 9 24 13 21 27 55.9 43 73 -5 9 55 4 8 53 14 10 5 59 8 42 13 0.46 - 50 0 0 9 15 11 21 27 39.8 44 72 -6 9 46 4 8 44 9 9 57 0 8 33 7 0.46 - 49 0 0 9 5 34 21 27 23.5 45 72 -6 9 36 30 8 34 30 9 47 26 8 23 27 0.46 - 48 0 0 8 55 22 21 27 6.8 46 72 -7 9 26 21 8 24 15 9 37 18 8 13 11 0.46 - 47 0 0 8 44 35 21 26 50.0 46 72 -8 9 15 37 8 13 25 9 26 35 8 2 21 0.46 - 46 0 0 8 33 14 21 26 32.8 47 71 -9 9 4 19 8 2 1 9 15 18 7 50 55 0.46 - 45 0 0 8 21 18 21 26 15.4 48 71 -9 8 52 26 7 50 1 9 3 26 7 38 54 0.46 - 44 0 0 8 8 47 21 25 57.8 49 70 -10 8 39 59 7 37 27 8 51 0 7 26 19 0.46 - 43 0 0 7 55 42 21 25 39.9 50 70 -11 8 26 57 7 24 18 8 38 0 7 13 8 0.46 - 42 0 0 7 42 2 21 25 21.8 50 69 -12 8 13 21 7 10 34 8 24 25 6 59 23 0.46 - 41 0 0 7 27 47 21 25 3.4 51 69 -13 7 59 10 6 56 16 8 10 16 6 45 3 0.46 - 40 0 0 7 12 58 21 24 44.8 52 68 -13 7 44 25 6 41 22 7 55 32 6 30 8 0.46 - 39 0 0 6 57 34 21 24 26.0 53 68 -14 7 29 6 6 25 54 7 40 14 6 14 39 0.46 - 38 0 0 6 41 36 21 24 6.9 53 67 -15 7 13 12 6 9 52 7 24 22 5 58 35 0.46 - 37 0 0 6 25 3 21 23 47.6 54 66 -16 6 56 44 5 53 14 7 7 56 5 41 56 0.46 - 36 0 0 6 7 56 21 23 28.1 55 65 -16 6 39 42 5 36 3 6 50 55 5 24 42 0.46 - 35 0 0 5 50 15 21 23 8.4 56 65 -17 6 22 5 5 18 16 6 33 21 5 6 54 0.46 - 34 0 0 5 31 59 21 22 48.4 56 64 -18 6 3 55 4 59 55 6 15 12 4 48 31 0.46 - 33 0 0 5 13 9 21 22 28.2 57 63 -18 5 45 10 4 41 0 5 56 29 4 29 33 0.46 - 32 0 0 4 53 45 21 22 7.8 58 62 -19 5 25 51 4 21 30 5 37 12 4 10 2 0.46 - 31 0 0 4 33 46 21 21 47.2 58 61 -20 5 5 58 4 1 26 5 17 21 3 49 55 0.46 - 30 0 0 4 13 13 21 21 26.4 59 59 -21 4 45 31 3 40 47 4 56 56 3 29 15 0.46 - 29 0 0 3 52 7 21 21 5.5 59 58 -21 4 24 30 3 19 34 4 35 57 3 8 0 0.46 - 28 0 0 3 30 26 21 20 44.3 60 57 -22 4 2 55 2 57 47 4 14 24 2 46 11 0.46 - 27 0 0 3 8 11 21 20 22.9 61 56 -23 3 40 46 2 35 26 3 52 18 2 23 47 0.46 - 26 0 0 2 45 22 21 20 1.3 61 54 -23 3 18 4 2 12 31 3 29 38 2 0 50 0.46 - 25 0 0 2 22 0 21 19 39.6 62 53 -24 2 54 48 1 49 2 3 6 24 1 37 19 0.46 - 24 0 0 1 58 4 21 19 17.7 62 51 -25 2 30 59 1 24 59 2 42 37 1 13 13 0.46 - 23 0 0 1 33 34 21 18 55.6 62 49 -25 2 6 36 1 0 23 2 18 16 0 48 34 0.46 - 22 0 0 1 8 31 21 18 33.4 63 48 -26 1 41 40 0 35 13 1 53 22 0 23 22 0.46 - 21 0 0 0 42 55 21 18 11.0 63 46 -27 1 16 11 0 9 30 1 27 56 - 0 2 24 0.47 - 20 0 0 0 16 46 21 17 48.5 64 44 -27 0 50 8 - 0 16 47 1 1 56 - 0 28 43 0.47 - 19 0 0 - 0 9 57 21 17 25.8 64 42 -28 0 23 33 - 0 43 37 0 35 24 - 0 55 35 0.47 - 18 0 0 - 0 37 12 21 17 3.0 64 40 -28 - 0 3 34 - 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38 - 5 57 31 - 7 33 15 0.48 - 5 0 0 - 7 19 6 21 11 58.7 63 12 -35 - 6 43 44 - 7 54 42 - 6 31 14 - 8 7 22 0.48 - 4 0 0 - 7 53 29 21 11 35.0 63 10 -35 - 7 17 58 - 8 29 13 - 7 5 25 - 8 41 56 0.48 - 3 0 0 - 8 28 19 21 11 11.4 62 8 -36 - 7 52 39 - 9 4 12 - 7 40 3 - 9 16 59 0.48 - 2 0 0 - 9 3 37 21 10 47.7 62 6 -36 - 8 27 47 - 9 39 38 - 8 15 9 - 9 52 28 0.48 - 1 0 0 - 9 39 20 21 10 24.2 61 4 -36 - 9 3 22 -10 15 31 - 8 50 40 -10 28 24 0.49 - 0 0 0 -10 15 29 21 10 0.6 61 2 -37 - 9 39 22 -10 51 49 - 9 26 37 -11 4 45 0.49 1 0 0 -10 52 3 21 9 37.2 60 0 -37 -10 15 48 -11 28 32 -10 2 59 -11 41 31 0.49 2 0 0 -11 29 1 21 9 13.8 60 359 -37 -10 52 37 -12 5 39 -10 39 46 -12 18 42 0.49 3 0 0 -12 6 23 21 8 50.6 59 357 -37 -11 29 50 -12 43 10 -11 16 56 -12 56 16 0.49 4 0 0 -12 44 8 21 8 27.4 58 355 -38 -12 7 26 -13 21 4 -11 54 29 -13 34 13 0.49 5 0 0 -13 22 15 21 8 4.4 58 354 -38 -12 45 24 -13 59 20 -12 32 23 -14 12 32 0.49 6 0 0 -14 0 43 21 7 41.5 57 352 -38 -13 23 43 -14 37 57 -13 10 39 -14 51 12 0.49 7 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24 -30 10 36 -31 58 40 0.52 32 0 0 -31 45 17 20 59 23.4 33 328 -34 -31 5 30 -32 25 22 -30 51 29 -32 39 39 0.52 33 0 0 -32 25 59 20 59 9.5 32 327 -33 -31 46 11 -33 6 6 -31 32 8 -33 20 24 0.52 34 0 0 -33 6 28 20 58 56.1 31 326 -33 -32 26 38 -33 46 36 -32 12 35 -34 0 55 0.52 35 0 0 -33 46 41 20 58 43.1 30 326 -32 -33 6 50 -34 26 50 -32 52 46 -34 41 9 0.52 36 0 0 -34 26 37 20 58 30.6 29 325 -32 -33 46 45 -35 6 47 -33 32 41 -35 21 6 0.52 37 0 0 -35 6 14 20 58 18.6 28 324 -31 -34 26 23 -35 46 25 -34 12 19 -36 0 44 0.52 38 0 0 -35 45 33 20 58 7.0 27 324 -31 -35 5 41 -36 25 43 -34 51 38 -36 40 2 0.52 39 0 0 -36 24 30 20 57 55.9 26 323 -30 -35 44 39 -37 4 39 -35 30 36 -37 18 58 0.52 40 0 0 -37 3 5 20 57 45.3 25 322 -29 -36 23 16 -37 43 13 -36 9 13 -37 57 31 0.52 41 0 0 -37 41 17 20 57 35.1 24 322 -29 -37 1 30 -38 21 23 -36 47 28 -38 35 40 0.52 42 0 0 -38 19 5 20 57 25.5 23 321 -28 -37 39 20 -38 59 8 -37 25 19 -39 13 25 0.52 43 0 0 -38 56 27 20 57 16.2 22 320 -28 -38 16 45 -39 36 28 -38 2 45 -39 50 43 0.52 44 0 0 -39 33 23 20 57 7.5 21 320 -27 -38 53 44 -40 13 20 -38 39 45 -40 27 34 0.52 45 0 0 -40 9 52 20 56 59.1 20 319 -27 -39 30 17 -40 49 45 -39 16 19 -41 3 57 0.52 46 0 0 -40 45 52 20 56 51.3 19 318 -26 -40 6 21 -41 25 40 -39 52 24 -41 39 52 0.52 47 0 0 -41 21 23 20 56 43.8 18 318 -25 -40 41 57 -42 1 6 -40 28 2 -42 15 16 0.52 48 0 0 -41 56 24 20 56 36.8 17 317 -25 -41 17 3 -42 36 2 -41 3 10 -42 50 9 0.52 49 0 0 -42 30 54 20 56 30.2 16 316 -24 -41 51 38 -43 10 26 -41 37 47 -43 24 32 0.52 50 0 0 -43 4 52 20 56 24.1 15 316 -24 -42 25 43 -43 44 19 -42 11 54 -43 58 22 0.52 51 0 0 -43 38 19 20 56 18.3 14 315 -23 -42 59 16 -44 17 38 -42 45 29 -44 31 39 0.52 52 0 0 -44 11 13 20 56 13.0 13 314 -22 -43 32 17 -44 50 25 -43 18 32 -45 4 24 0.52 53 0 0 -44 43 33 20 56 8.0 13 313 -22 -44 4 44 -45 22 39 -43 51 3 -45 36 34 0.52 54 0 0 -45 15 20 20 56 3.4 12 313 -21 -44 36 39 -45 54 18 -44 23 0 -46 8 11 0.52 55 0 0 -45 46 33 20 55 59.2 11 312 -20 -45 8 0 -46 25 23 -44 54 24 -46 39 13 0.52 56 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302 -13 -51 2 59 -52 16 11 -50 50 5 -52 29 15 0.54 0 0 0 .. .. .... .. .. .. .. .. .. -51 26 14 .. .. .. -51 13 24 .. .. .. .... Uncertainty in time = +/- 4 secs Prediction of 2023 Nov 13.9 Data for the target star ------------------------ * name: TYC 1241-01022-1 * constellation : Aries * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 03 21 15.6015 DE: +18 52 57.724 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 03 21 15.6014 DE: +18 52 57.724 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (481) Emita asteroid class: approx. diameter [km]: 102 approx. diameter ["]: 0.096 distance from Earth [AU]: 1.46420 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#102 date of fit: 2023 Oct 09 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): 0.021", 0.001", 65.032° remarks: * orbital elements for (481)Emita : Mean anomaly = 9.0600342108 deg Arg. of pericenter = 348.9458293895 deg Long. of node = 66.6905326807 deg Inclination = 9.8488321796 deg Eccentricity = 0.1579462535 Semimajor axis = 2.7409316753 AU Perihelion dist = 2.3080117860 AU Mag: H = 8.84, G = 0.15 Epoch of elements : MJD 60301.88527778 TDT (2023 Dec 23.8853) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1022023Oct09,20.87,2023,12,23,21.251588,-0.218891,-0.366876,-2.378435,1.419501,0.003481,0.000872,0.000001,0.000000 -0.2669,18.9700,-138.99,-23.43,False TYC 1241-01022-1,3.35433376,18.8827012,0.00,10.57,0.00,0.0,0,,3.37732374,18.9700472,1.97,0.00,0,0,0 481,Emita,12.35,102.400,1.4642,0,0,-1.005,8.53,,7.4,0 0,8.8678,2023,12,23,348.9458,66.6905,9.8488,0.15795,2.74093,2.30801,8.85,5.0,0.15 1.177,0.0207,0.0006,65,0.0207,Known errors,-1.00,0,-1,-1 20231223_1022-1,60261.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Nov 13, 20:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org