IOTA/IOTA-ES occultation update for (2404) Antarctica / TYC 4664-01184-1 event on 2024 Jun 13, 00:37 UT Visible from Summary ------- On 2024 Jun 13 UT, the 22.5082747980629 km diameter asteroid (2404) Antarctica will occult a 10.6 mag star in the constellation Pisces for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.22 mag to 17.81 mag (the magnitude of the asteroid) for at most 1.050 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 Jun 13, 00:33 - 2024 Jun 13, 00:42 * geocentric midpoint of event [JD]: 2460474.52619808 * magnitude of target star: 10.59 * magnitude drop [mag]: 7.22 * estimated maximum duration [s]: 1.050 * Moon: 38 % sunlit, 154° distance * Sun: 78° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 25 * 1 sigma uncertainty interval [path widths]: +/- 0.28 * 1 sigma uncertainty interval [seconds]: +/- 2.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.018, +/- 0.008) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.003", 68°) * approx speed of asteroid's shadow [km/s]: 21.6648 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 4664-01184-1 by 2404 Antarctica on 2024 Jun 13 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 5 0 0 -44 0 12 0 33 15.1 0 90 -66 -44 6 56 -43 53 28 -44 10 45 -43 49 40 .... 6 0 0 -44 0 10 0 33 15.1 1 89 -66 -44 6 54 -43 53 26 -44 10 43 -43 49 38 0.29 7 0 0 -43 59 51 0 33 15.2 2 89 -66 -44 6 35 -43 53 8 -44 10 24 -43 49 19 0.35 8 0 0 -43 59 16 0 33 15.4 2 88 -65 -44 6 0 -43 52 32 -44 9 49 -43 48 44 0.38 9 0 0 -43 58 23 0 33 15.6 3 87 -65 -44 5 7 -43 51 40 -44 8 56 -43 47 51 0.39 10 0 0 -43 57 14 0 33 15.9 4 87 -64 -44 3 58 -43 50 30 -44 7 47 -43 46 42 0.40 11 0 0 -43 55 47 0 33 16.2 5 86 -64 -44 2 32 -43 49 4 -44 6 21 -43 45 15 0.41 12 0 0 -43 54 4 0 33 16.5 5 85 -63 -44 0 48 -43 47 20 -44 4 38 -43 43 32 0.41 13 0 0 -43 52 4 0 33 16.9 6 84 -63 -43 58 48 -43 45 20 -44 2 38 -43 41 31 0.42 14 0 0 -43 49 47 0 33 17.4 7 84 -62 -43 56 31 -43 43 3 -44 0 21 -43 39 14 0.42 15 0 0 -43 47 13 0 33 17.9 8 83 -62 -43 53 57 -43 40 29 -43 57 47 -43 36 40 0.42 16 0 0 -43 44 22 0 33 18.5 8 82 -61 -43 51 6 -43 37 37 -43 54 56 -43 33 48 0.42 17 0 0 -43 41 13 0 33 19.1 9 82 -61 -43 47 58 -43 34 29 -43 51 48 -43 30 40 0.42 18 0 0 -43 37 48 0 33 19.7 10 81 -60 -43 44 33 -43 31 3 -43 48 23 -43 27 14 0.42 19 0 0 -43 34 6 0 33 20.5 10 80 -60 -43 40 51 -43 27 21 -43 44 41 -43 23 32 0.43 20 0 0 -43 30 6 0 33 21.2 11 80 -59 -43 36 52 -43 23 21 -43 40 42 -43 19 32 0.43 21 0 0 -43 25 50 0 33 22.1 12 79 -58 -43 32 36 -43 19 4 -43 36 26 -43 15 15 0.43 22 0 0 -43 21 16 0 33 22.9 13 78 -58 -43 28 2 -43 14 31 -43 31 52 -43 10 41 0.43 23 0 0 -43 16 25 0 33 23.9 13 77 -57 -43 23 12 -43 9 39 -43 27 2 -43 5 50 0.43 24 0 0 -43 11 17 0 33 24.8 14 77 -57 -43 18 4 -43 4 31 -43 21 54 -43 0 41 0.43 25 0 0 -43 5 52 0 33 25.9 15 76 -56 -43 12 39 -42 59 6 -43 16 30 -42 55 15 0.43 26 0 0 -43 0 10 0 33 27.0 16 75 -55 -43 6 57 -42 53 23 -43 10 48 -42 49 33 0.43 27 0 0 -42 54 10 0 33 28.1 16 75 -55 -43 0 58 -42 47 23 -43 4 49 -42 43 32 0.43 28 0 0 -42 47 53 0 33 29.3 17 74 -54 -42 54 41 -42 41 6 -42 58 32 -42 37 15 0.43 29 0 0 -42 41 19 0 33 30.6 18 73 -53 -42 48 7 -42 34 31 -42 51 59 -42 30 40 0.43 30 0 0 -42 34 27 0 33 31.9 19 73 -53 -42 41 16 -42 27 39 -42 45 8 -42 23 48 0.43 31 0 0 -42 27 18 0 33 33.3 19 72 -52 -42 34 7 -42 20 30 -42 37 59 -42 16 38 0.43 32 0 0 -42 19 52 0 33 34.7 20 71 -52 -42 26 41 -42 13 3 -42 30 34 -42 9 11 0.43 33 0 0 -42 12 8 0 33 36.2 21 70 -51 -42 18 58 -42 5 19 -42 22 51 -42 1 27 0.43 34 0 0 -42 4 7 0 33 37.7 22 70 -50 -42 10 58 -41 57 18 -42 14 50 -41 53 25 0.43 35 0 0 -41 55 49 0 33 39.3 22 69 -49 -42 2 40 -41 48 59 -42 6 33 -41 45 6 0.43 36 0 0 -41 47 13 0 33 41.0 23 68 -49 -41 54 4 -41 40 22 -41 57 57 -41 36 30 0.43 37 0 0 -41 38 20 0 33 42.7 24 67 -48 -41 45 12 -41 31 29 -41 49 5 -41 27 36 0.43 38 0 0 -41 29 9 0 33 44.5 25 67 -47 -41 36 1 -41 22 18 -41 39 55 -41 18 24 0.43 39 0 0 -41 19 41 0 33 46.3 25 66 -47 -41 26 34 -41 12 49 -41 30 28 -41 8 55 0.43 40 0 0 -41 9 56 0 33 48.2 26 65 -46 -41 16 49 -41 3 3 -41 20 43 -40 59 9 0.43 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11.2 6 270 62 - 4 24 20 - 4 10 49 - 4 28 10 - 4 7 0 0.49 178 0 0 - 4 15 22 0 42 11.6 5 270 61 - 4 22 8 - 4 8 37 - 4 25 58 - 4 4 48 0.50 179 0 0 - 4 13 33 0 42 12.0 4 270 61 - 4 20 19 - 4 6 48 - 4 24 9 - 4 2 59 0.51 180 0 0 - 4 12 8 0 42 12.3 3 270 61 - 4 18 53 - 4 5 23 - 4 22 43 - 4 1 34 0.54 -179 0 0 - 4 11 6 0 42 12.5 2 270 60 - 4 17 51 - 4 4 21 - 4 21 41 - 4 0 32 0.59 -178 0 0 - 4 10 27 0 42 12.6 1 270 60 - 4 17 13 - 4 3 43 - 4 21 3 - 3 59 53 0.87 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 14.4 Data for the target star ------------------------ * name: TYC 4664-01184-1 * constellation : Pisces * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 00 18 18.9912 DE: -00 21 48.724 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 00 18 18.9914 DE: -00 21 48.723 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.6 * B mag [mag]: 11.1 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2404) Antarctica asteroid class: approx. diameter [km]: 23 approx. diameter ["]: 0.010 distance from Earth [AU]: 3.09850 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#57 date of fit: 2023 Apr 24 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): 0.019", 0.003", 67.6° remarks: * orbital elements for (2404)Antarctica : Mean anomaly = 72.9106291957 deg Arg. of pericenter = 146.3449709831 deg Long. of node = 110.8406707050 deg Inclination = 2.6900462949 deg Eccentricity = 0.1318495710 Semimajor axis = 3.1246944649 AU Perihelion dist = 2.7127048402 AU Mag: H = 11.96, G = 0.15 Epoch of elements : MJD 60474.02619808 TDT (2024 Jun 13.0262) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#572023Apr24,1.05,2024,6,13,0.628754,0.137346,-0.382100,11.504375,4.144777,-0.005049,-0.002229,0.000000,0.000000 93.6352,-0.2284,170.60,23.23,False TYC 4664-01184-1,0.30527532,-0.3635345,11.14,10.59,10.29,0.1,0,,0.32601474,-0.2283825,7.22,7.07,0,0,0 2404,Antarctica,17.81,22.733,3.0985,0,0,2.177,11.77,,2.0,0 0,72.7275,2024,6,12,146.3450,110.8407,2.6900,0.13185,3.12469,2.71270,11.96,5.0,0.15 1.283,0.0193,0.0027,68,0.0029,Known errors,0.90,0,-1,-1 20240613_1184-1,60139.38 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 09:10 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org