IOTA/IOTA-ES occultation update for (2476) Andersen / TYC 6914-01434-1 event on 2024 Dec 06, 17:21 UT Visible from Summary ------- On 2024 Dec 06 UT, the 20.915645209224 km diameter asteroid (2476) Andersen will occult a 10.4 mag star in the constellation Capricornus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.59 mag to 16.94 mag (the magnitude of the asteroid) for at most 0.540 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 06, 17:18 - 2024 Dec 06, 17:24 * geocentric midpoint of event [JD]: 2460651.22330308 * magnitude of target star: 10.35 * magnitude drop [mag]: 6.59 * estimated maximum duration [s]: 0.540 * Moon: 29 % sunlit, 20° distance * Sun: 46° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 21 * 1 sigma uncertainty interval [path widths]: +/- 0.30 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.001", 85°) * approx speed of asteroid's shadow [km/s]: 38.9926 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6914-01434-1 by 2476 Andersen on 2024 Dec 6 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 -130 0 0 -19 27 54 17 18 51.6 1 118 45 -19 34 30 -19 21 18 -19 38 25 -19 17 23 .... -129 0 0 -19 58 38 17 18 51.7 2 118 46 -20 5 14 -19 52 3 -20 9 8 -19 48 9 0.19 -128 0 0 -20 29 3 17 18 51.8 3 118 47 -20 35 37 -20 22 29 -20 39 31 -20 18 35 0.17 -127 0 0 -20 59 7 17 18 52.0 4 117 48 -21 5 40 -20 52 33 -21 9 34 -20 48 40 0.17 -126 0 0 -21 28 49 17 18 52.3 5 117 49 -21 35 22 -21 22 16 -21 39 15 -21 18 23 0.16 -125 0 0 -21 58 10 17 18 52.6 6 117 50 -22 4 42 -21 51 38 -22 8 35 -21 47 45 0.16 -124 0 0 -22 27 8 17 18 52.9 7 116 51 -22 33 40 -22 20 37 -22 37 32 -22 16 45 0.16 -123 0 0 -22 55 44 17 18 53.3 8 116 52 -23 2 14 -22 49 13 -23 6 6 -22 45 22 0.16 -122 0 0 -23 23 56 17 18 53.8 9 115 53 -23 30 25 -23 17 26 -23 34 17 -23 13 35 0.15 -121 0 0 -23 51 44 17 18 54.3 10 115 54 -23 58 13 -23 45 15 -24 2 3 -23 41 25 0.15 -120 0 0 -24 19 8 17 18 54.9 11 115 55 -24 25 36 -24 12 40 -24 29 26 -24 8 50 0.15 -119 0 0 -24 46 7 17 18 55.5 12 114 56 -24 52 34 -24 39 40 -24 56 24 -24 35 51 0.15 -118 0 0 -25 12 41 17 18 56.1 13 114 57 -25 19 7 -25 6 15 -25 22 57 -25 2 26 0.15 -117 0 0 -25 38 50 17 18 56.8 14 113 58 -25 45 15 -25 32 25 -25 49 4 -25 28 37 0.15 -116 0 0 -26 4 33 17 18 57.6 15 113 59 -26 10 57 -25 58 9 -26 14 46 -25 54 21 0.15 -115 0 0 -26 29 51 17 18 58.4 16 112 60 -26 36 14 -26 23 27 -26 40 1 -26 19 40 0.15 -114 0 0 -26 54 41 17 18 59.2 17 112 61 -27 1 4 -26 48 19 -27 4 50 -26 44 33 0.15 -113 0 0 -27 19 6 17 19 0.1 18 111 61 -27 25 27 -27 12 45 -27 29 13 -27 8 58 0.15 -112 0 0 -27 43 3 17 19 1.0 19 111 62 -27 49 24 -27 36 43 -27 53 9 -27 32 58 0.15 -111 0 0 -28 6 34 17 19 1.9 20 111 63 -28 12 53 -28 0 15 -28 16 39 -27 56 30 0.15 -110 0 0 -28 29 38 17 19 2.9 21 110 64 -28 35 56 -28 23 20 -28 39 41 -28 19 35 0.15 -109 0 0 -28 52 14 17 19 4.0 22 110 65 -28 58 31 -28 45 57 -29 2 15 -28 42 13 0.15 -108 0 0 -29 14 23 17 19 5.0 23 109 66 -29 20 39 -29 8 7 -29 24 23 -29 4 24 0.15 -107 0 0 -29 36 5 17 19 6.1 24 109 66 -29 42 20 -29 29 49 -29 46 3 -29 26 7 0.15 -106 0 0 -29 57 19 17 19 7.3 25 108 67 -30 3 33 -29 51 4 -30 7 15 -29 47 22 0.15 -105 0 0 -30 18 5 17 19 8.4 26 107 68 -30 24 18 -30 11 52 -30 28 0 -30 8 10 0.15 -104 0 0 -30 38 23 17 19 9.6 27 107 69 -30 44 36 -30 32 11 -30 48 17 -30 28 30 0.15 -103 0 0 -30 58 14 17 19 10.9 28 106 69 -31 4 25 -30 52 3 -31 8 6 -30 48 22 0.15 -102 0 0 -31 17 37 17 19 12.1 29 106 70 -31 23 47 -31 11 27 -31 27 27 -31 7 47 0.15 -101 0 0 -31 36 32 17 19 13.4 30 105 71 -31 42 42 -31 30 23 -31 46 21 -31 26 44 0.15 -100 0 0 -31 54 59 17 19 14.7 31 105 71 -32 1 8 -31 48 51 -32 4 47 -31 45 12 0.15 - 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9 36 51 17 23 54.5 29 244 -17 - 9 43 34 - 9 30 7 - 9 47 33 - 9 26 8 0.15 31 0 0 - 9 1 59 17 23 56.1 28 244 -18 - 9 8 42 - 8 55 16 - 9 12 42 - 8 51 17 0.16 32 0 0 - 8 27 5 17 23 57.6 27 244 -19 - 8 33 48 - 8 20 22 - 8 37 48 - 8 16 23 0.16 33 0 0 - 7 52 10 17 23 59.1 26 244 -21 - 7 58 53 - 7 45 27 - 8 2 52 - 7 41 28 0.16 34 0 0 - 7 17 14 17 24 0.5 25 244 -22 - 7 23 57 - 7 10 31 - 7 27 56 - 7 6 32 0.16 35 0 0 - 6 42 19 17 24 1.9 23 243 -23 - 6 49 2 - 6 35 37 - 6 53 1 - 6 31 38 0.16 36 0 0 - 6 7 27 17 24 3.2 22 243 -24 - 6 14 9 - 6 0 44 - 6 18 8 - 5 56 45 0.16 37 0 0 - 5 32 37 17 24 4.4 21 243 -25 - 5 39 19 - 5 25 55 - 5 43 18 - 5 21 56 0.16 38 0 0 - 4 57 51 17 24 5.6 20 243 -26 - 5 4 33 - 4 51 9 - 5 8 32 - 4 47 11 0.16 39 0 0 - 4 23 11 17 24 6.7 19 243 -27 - 4 29 52 - 4 16 29 - 4 33 51 - 4 12 31 0.16 40 0 0 - 3 48 37 17 24 7.7 18 243 -29 - 3 55 18 - 3 41 56 - 3 59 16 - 3 37 58 0.16 41 0 0 - 3 14 10 17 24 8.7 16 243 -30 - 3 20 51 - 3 7 29 - 3 24 49 - 3 3 31 0.16 42 0 0 - 2 39 51 17 24 9.6 15 243 -31 - 2 46 32 - 2 33 11 - 2 50 29 - 2 29 14 0.16 43 0 0 - 2 5 42 17 24 10.4 14 243 -32 - 2 12 22 - 1 59 3 - 2 16 20 - 1 55 5 0.16 44 0 0 - 1 31 44 17 24 11.2 13 243 -33 - 1 38 23 - 1 25 4 - 1 42 20 - 1 21 8 0.17 45 0 0 - 0 57 56 17 24 11.9 12 243 -34 - 1 4 35 - 0 51 18 - 1 8 32 - 0 47 21 0.17 46 0 0 - 0 24 21 17 24 12.6 11 243 -36 - 0 30 59 - 0 17 43 - 0 34 56 - 0 13 47 0.17 47 0 0 0 9 1 17 24 13.1 10 243 -37 0 2 23 0 15 38 - 0 1 33 0 19 34 0.17 48 0 0 0 42 8 17 24 13.7 8 243 -38 0 35 32 0 48 45 0 31 36 0 52 40 0.18 49 0 0 1 15 1 17 24 14.1 7 243 -39 1 8 25 1 21 37 1 4 30 1 25 32 0.18 50 0 0 1 47 37 17 24 14.5 6 243 -40 1 41 2 1 54 13 1 37 7 1 58 7 0.19 51 0 0 2 19 57 17 24 14.8 5 243 -41 2 13 23 2 26 32 2 9 28 2 30 26 0.20 52 0 0 2 51 59 17 24 15.1 4 243 -42 2 45 26 2 58 33 2 41 32 3 2 27 0.21 53 0 0 3 23 43 17 24 15.3 3 243 -43 3 17 10 3 30 16 3 13 17 3 34 9 0.23 54 0 0 3 55 8 17 24 15.4 2 243 -45 3 48 36 4 1 40 3 44 43 4 5 33 0.29 55 0 0 4 26 13 17 24 15.4 1 243 -46 4 19 41 4 32 44 4 15 49 4 36 36 0.61 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 6914-01434-1 * constellation : Capricornus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 20 17 59.3246 DE: -27 02 31.403 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 20 17 59.3245 DE: -27 02 31.403 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.4 * B mag [mag]: 10.9 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2476) Andersen asteroid class: approx. diameter [km]: 21 approx. diameter ["]: 0.009 distance from Earth [AU]: 3.31400 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 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): 0.015", 0.001", 85.292° remarks: * orbital elements for (2476)Andersen : Mean anomaly = 333.9854703587 deg Arg. of pericenter = 266.5076416081 deg Long. of node = 82.2274942710 deg Inclination = 10.8327647182 deg Eccentricity = 0.1127621977 Semimajor axis = 3.0250538923 AU Perihelion dist = 2.6839421671 AU Mag: H = 11.32, G = 0.15 Epoch of elements : MJD 60650.72330279 TDT (2024 Dec 06.7233) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr24,0.54,2024,12,6,17.359274,0.031520,-0.136478,21.421913,5.047417,0.004235,0.000465,-0.000001,0.000000 -31.5037,-26.9666,-82.55,-22.61,False TYC 6914-01434-1,20.29981243,-27.0420564,10.89,10.35,10.06,0.1,0,,20.32471776,-26.9665547,6.59,6.43,0,0,0 2476,Andersen,16.94,21.156,3.3140,0,0,4.252,13.40,,1.6,0 0,333.8500,2024,12,6,266.5076,82.2275,10.8328,0.11276,3.02505,2.68394,11.32,5.0,0.15 1.297,0.0153,0.0013,85,0.0026,Known errors,0.99,0,-1,-1 20241206_1434-1,60140.73 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:30 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org