IOTA/IOTA-ES occultation update for (3623) Chaplin / TYC 5258-00558-1 event on 2024 Nov 24, 00:28 UT Visible from Summary ------- On 2024 Nov 24 UT, the 9.83446188900198 km diameter asteroid (3623) Chaplin will occult a 9.6 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.27 mag to 16.90 mag (the magnitude of the asteroid) for at most 1.420 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: 82 * date and approx. time of event: 2024 Nov 24, 00:14 - 2024 Nov 24, 00:42 * geocentric midpoint of event [JD]: 2460638.51977950 * magnitude of target star: 9.63 * magnitude drop [mag]: 7.27 * estimated maximum duration [s]: 1.420 * Moon: 40 % sunlit, 169° distance * Sun: 112° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.65 * 1 sigma uncertainty interval [seconds]: +/- 3.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.002", 68°) * approx speed of asteroid's shadow [km/s]: 7.0216 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5258-00558-1 by 3623 Chaplin on 2024 Nov 24 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 -171 0 0 -61 11 35 0 15 11.7 0 102 48 -61 14 44 -61 8 27 -61 18 50 -61 4 21 .... -170 0 0 -61 17 24 0 15 11.7 1 101 48 -61 20 32 -61 14 16 -61 24 38 -61 10 10 0.41 -169 0 0 -61 22 52 0 15 11.8 1 100 47 -61 26 0 -61 19 45 -61 30 5 -61 15 40 0.48 -168 0 0 -61 28 1 0 15 12.0 2 99 47 -61 31 8 -61 24 54 -61 35 13 -61 20 49 0.50 -167 0 0 -61 32 49 0 15 12.3 2 98 47 -61 35 56 -61 29 43 -61 40 1 -61 25 39 0.51 -166 0 0 -61 37 19 0 15 12.7 2 97 46 -61 40 25 -61 34 12 -61 44 29 -61 30 9 0.52 -165 0 0 -61 41 28 0 15 13.1 3 96 46 -61 44 35 -61 38 22 -61 48 38 -61 34 19 0.52 -164 0 0 -61 45 19 0 15 13.6 3 95 46 -61 48 25 -61 42 13 -61 52 28 -61 38 10 0.52 -163 0 0 -61 48 50 0 15 14.1 4 95 46 -61 51 56 -61 45 45 -61 55 58 -61 41 42 0.52 -162 0 0 -61 52 2 0 15 14.8 4 94 45 -61 55 7 -61 48 57 -61 59 10 -61 44 55 0.53 -161 0 0 -61 54 55 0 15 15.5 5 93 45 -61 58 0 -61 51 50 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11 81 41 -62 6 59 -62 0 52 -62 11 0 -61 56 51 0.53 -147 0 0 -62 2 26 0 15 32.5 11 80 40 -62 5 30 -61 59 22 -62 9 31 -61 55 21 0.53 -146 0 0 -62 0 37 0 15 34.2 12 79 40 -62 3 41 -61 57 33 -62 7 42 -61 53 33 0.53 -145 0 0 -61 58 30 0 15 36.1 12 79 39 -62 1 34 -61 55 25 -62 5 35 -61 51 25 0.53 -144 0 0 -61 56 3 0 15 37.9 13 78 39 -61 59 7 -61 52 59 -62 3 9 -61 48 58 0.53 -143 0 0 -61 53 17 0 15 39.9 13 77 39 -61 56 22 -61 50 12 -62 0 23 -61 46 11 0.53 -142 0 0 -61 50 12 0 15 42.0 14 76 38 -61 53 17 -61 47 7 -61 57 18 -61 43 6 0.53 -141 0 0 -61 46 47 0 15 44.1 14 75 38 -61 49 52 -61 43 42 -61 53 54 -61 39 41 0.53 -140 0 0 -61 43 3 0 15 46.3 15 74 38 -61 46 8 -61 39 58 -61 50 11 -61 35 56 0.53 -139 0 0 -61 38 59 0 15 48.5 15 73 37 -61 42 4 -61 35 54 -61 46 7 -61 31 51 0.53 -138 0 0 -61 34 35 0 15 50.9 16 72 37 -61 37 41 -61 31 29 -61 41 44 -61 27 27 0.53 -137 0 0 -61 29 51 0 15 53.3 16 71 36 -61 32 57 -61 26 45 -61 37 1 -61 22 42 0.53 -136 0 0 -61 24 47 0 15 55.8 17 70 36 -61 27 54 -61 21 41 -61 31 58 -61 17 37 0.53 -135 0 0 -61 19 23 0 15 58.5 17 70 36 -61 22 29 -61 16 16 -61 26 34 -61 12 12 0.53 -134 0 0 -61 13 37 0 16 1.1 18 69 35 -61 16 45 -61 10 30 -61 20 50 -61 6 26 0.53 -133 0 0 -61 7 31 0 16 3.9 18 68 35 -61 10 39 -61 4 24 -61 14 44 -61 0 19 0.53 -132 0 0 -61 1 4 0 16 6.8 19 67 34 -61 4 12 -60 57 56 -61 8 18 -60 53 51 0.53 -131 0 0 -60 54 16 0 16 9.8 19 66 34 -60 57 24 -60 51 7 -61 1 31 -60 47 1 0.53 -130 0 0 -60 47 6 0 16 12.8 20 65 34 -60 50 15 -60 43 57 -60 54 22 -60 39 50 0.53 -129 0 0 -60 39 34 0 16 16.0 20 64 33 -60 42 43 -60 36 24 -60 46 51 -60 32 17 0.53 -128 0 0 -60 31 40 0 16 19.2 21 63 33 -60 34 50 -60 28 30 -60 38 58 -60 24 22 0.53 -127 0 0 -60 23 23 0 16 22.6 21 62 32 -60 26 34 -60 20 13 -60 30 43 -60 16 4 0.53 -126 0 0 -60 14 44 0 16 26.0 22 61 32 -60 17 55 -60 11 33 -60 22 5 -60 7 23 0.53 -125 0 0 -60 5 42 0 16 29.6 22 60 31 -60 8 53 -60 2 30 -60 13 4 -59 58 20 0.52 -124 0 0 -59 56 16 0 16 33.3 23 59 31 -59 59 28 -59 53 4 -60 3 40 -59 48 53 0.52 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32.6 30 47 24 -57 18 43 -57 11 59 -57 23 8 -57 7 35 0.52 -110 0 0 -56 59 46 0 17 38.2 30 46 24 -57 3 9 -56 56 23 -57 7 35 -56 51 58 0.52 -109 0 0 -56 43 42 0 17 43.9 31 45 23 -56 47 6 -56 40 18 -56 51 33 -56 35 51 0.52 -108 0 0 -56 27 7 0 17 49.8 32 44 23 -56 30 32 -56 23 42 -56 35 0 -56 19 14 0.52 -107 0 0 -56 10 2 0 17 55.9 32 43 22 -56 13 28 -56 6 36 -56 17 57 -56 2 7 0.52 -106 0 0 -55 52 25 0 18 2.2 33 42 21 -55 55 52 -55 48 58 -56 0 23 -55 44 28 0.52 -105 0 0 -55 34 16 0 18 8.6 33 41 21 -55 37 44 -55 30 48 -55 42 16 -55 26 17 0.52 -104 0 0 -55 15 35 0 18 15.3 34 40 20 -55 19 4 -55 12 6 -55 23 38 -55 7 34 0.52 -103 0 0 -54 56 21 0 18 22.1 35 39 20 -54 59 51 -54 52 52 -55 4 26 -54 48 17 0.52 -102 0 0 -54 36 34 0 18 29.2 35 38 19 -54 40 5 -54 33 3 -54 44 41 -54 28 28 0.52 -101 0 0 -54 16 13 0 18 36.4 36 37 18 -54 19 45 -54 12 41 -54 24 23 -54 8 4 0.52 -100 0 0 -53 55 17 0 18 43.9 37 36 18 -53 58 51 -53 51 44 -54 3 29 -53 47 6 0.52 - 99 0 0 -53 33 47 0 18 51.6 37 35 17 -53 37 21 -53 30 13 -53 42 1 -53 25 33 0.52 - 98 0 0 -53 11 41 0 18 59.5 38 34 16 -53 15 16 -53 8 6 -53 19 58 -53 3 25 0.52 - 97 0 0 -52 48 59 0 19 7.6 39 33 16 -52 52 35 -52 45 23 -52 57 18 -52 40 40 0.52 - 96 0 0 -52 25 41 0 19 16.0 39 32 15 -52 29 18 -52 22 3 -52 34 3 -52 17 19 0.52 - 95 0 0 -52 1 45 0 19 24.7 40 31 14 -52 5 24 -51 58 7 -52 10 10 -51 53 22 0.52 - 94 0 0 -51 37 13 0 19 33.5 41 30 13 -51 40 52 -51 33 33 -51 45 40 -51 28 46 0.52 - 93 0 0 -51 12 2 0 19 42.7 41 28 13 -51 15 43 -51 8 21 -51 20 32 -51 3 33 0.52 - 92 0 0 -50 46 13 0 19 52.1 42 27 12 -50 49 55 -50 42 32 -50 54 45 -50 37 42 0.52 - 91 0 0 -50 19 46 0 20 1.7 43 26 11 -50 23 29 -50 16 3 -50 28 21 -50 11 12 0.52 - 90 0 0 -49 52 39 0 20 11.7 43 25 10 -49 56 23 -49 48 56 -50 1 17 -49 44 3 0.52 - 89 0 0 -49 24 54 0 20 21.9 44 24 10 -49 28 39 -49 21 9 -49 33 33 -49 16 15 0.52 - 88 0 0 -48 56 28 0 20 32.4 45 23 9 -49 0 15 -48 52 42 -49 5 11 -48 47 47 0.52 - 87 0 0 -48 27 23 0 20 43.2 45 21 8 -48 31 11 -48 23 36 -48 36 8 -48 18 40 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15 -15 24 49 -15 7 18 0.57 - 37 0 0 -14 35 21 0 34 42.6 51 279 -47 -14 39 8 -14 31 34 -14 44 4 -14 26 38 0.57 - 36 0 0 -13 55 11 0 34 59.8 50 278 -48 -13 58 56 -13 51 25 -14 3 52 -13 46 31 0.57 - 35 0 0 -13 15 35 0 35 16.7 49 277 -49 -13 19 19 -13 11 50 -13 24 13 -13 6 57 0.57 - 34 0 0 -12 36 34 0 35 33.2 48 276 -51 -12 40 17 -12 32 50 -12 45 9 -12 27 59 0.57 - 33 0 0 -11 58 9 0 35 49.5 47 275 -52 -12 1 51 -11 54 27 -12 6 42 -11 49 37 0.57 - 32 0 0 -11 20 21 0 36 5.5 46 274 -53 -11 24 2 -11 16 40 -11 28 52 -11 11 52 0.57 - 31 0 0 -10 43 12 0 36 21.1 45 273 -54 -10 46 52 -10 39 32 -10 51 40 -10 34 45 0.57 - 30 0 0 -10 6 42 0 36 36.4 44 272 -55 -10 10 21 -10 3 4 -10 15 7 - 9 58 18 0.57 - 29 0 0 - 9 30 52 0 36 51.4 43 271 -56 - 9 34 30 - 9 27 15 - 9 39 14 - 9 22 31 0.57 - 28 0 0 - 8 55 43 0 37 6.0 42 270 -57 - 8 59 19 - 8 52 7 - 9 4 2 - 8 47 24 0.57 - 27 0 0 - 8 21 15 0 37 20.2 41 270 -58 - 8 24 50 - 8 17 40 - 8 29 32 - 8 12 59 0.58 - 26 0 0 - 7 47 30 0 37 34.1 40 269 -59 - 7 51 4 - 7 43 56 - 7 55 44 - 7 39 16 0.58 - 25 0 0 - 7 14 27 0 37 47.6 39 269 -60 - 7 18 0 - 7 10 54 - 7 22 38 - 7 6 16 0.58 - 24 0 0 - 6 42 7 0 38 0.7 38 268 -61 - 6 45 39 - 6 38 35 - 6 50 16 - 6 33 58 0.58 - 23 0 0 - 6 10 30 0 38 13.5 37 268 -61 - 6 14 1 - 6 7 0 - 6 18 37 - 6 2 25 0.58 - 22 0 0 - 5 39 38 0 38 25.9 36 267 -62 - 5 43 8 - 5 36 8 - 5 47 42 - 5 31 34 0.58 - 21 0 0 - 5 9 29 0 38 37.9 35 267 -63 - 5 12 58 - 5 6 1 - 5 17 31 - 5 1 29 0.58 - 20 0 0 - 4 40 5 0 38 49.5 33 266 -64 - 4 43 33 - 4 36 38 - 4 48 5 - 4 32 7 0.58 - 19 0 0 - 4 11 26 0 39 0.8 32 266 -65 - 4 14 53 - 4 8 0 - 4 19 23 - 4 3 30 0.58 - 18 0 0 - 3 43 31 0 39 11.6 31 266 -65 - 3 46 57 - 3 40 6 - 3 51 26 - 3 35 38 0.58 - 17 0 0 - 3 16 22 0 39 22.1 30 265 -66 - 3 19 46 - 3 12 57 - 3 24 14 - 3 8 30 0.58 - 16 0 0 - 2 49 57 0 39 32.2 29 265 -66 - 2 53 20 - 2 46 33 - 2 57 47 - 2 42 7 0.58 - 15 0 0 - 2 24 17 0 39 41.9 28 265 -67 - 2 27 39 - 2 20 54 - 2 32 4 - 2 16 30 0.58 - 14 0 0 - 1 59 22 0 39 51.2 27 265 -67 - 2 2 43 - 1 56 0 - 2 7 7 - 1 51 37 0.58 - 13 0 0 - 1 35 12 0 40 0.2 26 264 -68 - 1 38 32 - 1 31 51 - 1 42 55 - 1 27 29 0.58 - 12 0 0 - 1 11 46 0 40 8.8 25 264 -68 - 1 15 6 - 1 8 27 - 1 19 28 - 1 4 5 0.58 - 11 0 0 - 0 49 6 0 40 16.9 24 264 -68 - 0 52 25 - 0 45 47 - 0 56 46 - 0 41 27 0.58 - 10 0 0 - 0 27 10 0 40 24.7 23 264 -69 - 0 30 29 - 0 23 52 - 0 34 48 - 0 19 33 0.58 - 9 0 0 - 0 5 59 0 40 32.2 22 264 -69 - 0 9 17 - 0 2 42 - 0 13 35 0 1 36 0.58 - 8 0 0 0 14 28 0 40 39.2 21 264 -69 0 11 11 0 17 44 0 6 54 0 22 1 0.58 - 7 0 0 0 34 10 0 40 45.9 20 264 -69 0 30 54 0 37 26 0 26 38 0 41 42 0.58 - 6 0 0 0 53 8 0 40 52.2 19 264 -69 0 49 53 0 56 23 0 45 38 1 0 38 0.58 - 5 0 0 1 11 23 0 40 58.2 17 264 -69 1 8 8 1 14 37 1 3 54 1 18 51 0.58 - 4 0 0 1 28 54 0 41 3.8 16 264 -69 1 25 40 1 32 7 1 21 26 1 36 20 0.58 - 3 0 0 1 45 41 0 41 9.0 15 264 -68 1 42 28 1 48 54 1 38 15 1 53 6 0.59 - 2 0 0 2 1 45 0 41 13.9 14 264 -68 1 58 32 2 4 57 1 54 20 2 9 9 0.59 - 1 0 0 2 17 5 0 41 18.4 13 264 -68 2 13 54 2 20 17 2 9 42 2 24 28 0.59 0 0 0 2 31 43 0 41 22.6 12 264 -68 2 28 32 2 34 55 2 24 22 2 39 5 0.59 1 0 0 2 45 39 0 41 26.4 11 264 -67 2 42 28 2 48 49 2 38 18 2 52 58 0.59 2 0 0 2 58 51 0 41 29.9 10 264 -67 2 55 41 3 2 2 2 51 32 3 6 10 0.59 3 0 0 3 11 22 0 41 33.0 9 264 -66 3 8 12 3 14 32 3 4 4 3 18 39 0.60 4 0 0 3 23 10 0 41 35.8 8 264 -66 3 20 1 3 26 20 3 15 53 3 30 27 0.60 5 0 0 3 34 17 0 41 38.3 7 264 -65 3 31 8 3 37 26 3 27 1 3 41 33 0.60 6 0 0 3 44 42 0 41 40.4 6 264 -64 3 41 34 3 47 51 3 37 28 3 51 57 0.61 7 0 0 3 54 26 0 41 42.2 5 264 -64 3 51 18 3 57 34 3 47 12 4 1 40 0.62 8 0 0 4 3 29 0 41 43.7 4 264 -63 4 0 21 4 6 37 3 56 16 4 10 42 0.63 9 0 0 4 11 51 0 41 44.8 3 264 -62 4 8 44 4 14 58 4 4 39 4 19 3 0.66 10 0 0 4 19 32 0 41 45.6 2 264 -62 4 16 25 4 22 39 4 12 20 4 26 43 0.71 11 0 0 4 26 32 0 41 46.1 1 264 -61 4 23 26 4 29 39 4 19 22 4 33 43 0.85 12 0 0 4 32 53 0 41 46.3 0 264 -60 4 29 46 4 35 59 4 25 43 4 40 2 5.58 Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 5258-00558-1 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 23 44 24.9420 DE: -05 46 39.117 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 23 44 24.9416 DE: -05 46 39.119 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.6 * B mag [mag]: 9.9 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3623) Chaplin asteroid class: asteroid system: multiple bodies approx. diameter [km]: 10 approx. diameter ["]: 0.006 distance from Earth [AU]: 2.08940 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#87 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): 0.018", 0.002", 68.134° remarks: * orbital elements for (3623)Chaplin : Mean anomaly = 17.1485666567 deg Arg. of pericenter = 236.1738422402 deg Long. of node = 118.0895636084 deg Inclination = 3.0723634754 deg Eccentricity = 0.0833370372 Semimajor axis = 2.8519403623 AU Perihelion dist = 2.6142681023 AU Mag: H = 12.19, G = 0.15 Epoch of elements : MJD 60638.01977954 TDT (2024 Nov 24.0198) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#872023Apr24,1.42,2024,11,24,0.474708,0.260397,-0.398894,3.323937,2.158340,0.004905,0.002286,0.000001,0.000000 -74.1589,-5.6391,169.55,-20.60,False TYC 5258-00558-1,23.74026167,-5.7775323,9.89,9.63,9.49,0.1,4,,23.76170993,-5.6390792,7.27,6.96,0,0,0 3623,Chaplin,16.90,9.986,2.0894,0,1,0.938,9.09,,1.8,0 ,,12,0.348300,,,,,, 0,16.9399,2024,11,23,236.1738,118.0896,3.0724,0.08334,2.85194,2.61427,12.19,5.0,0.15 1.654,0.0183,0.0025,68,0.0043,Known errors,1.18,0,-1,-1 20241124_0558-1,60140.71 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:05 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org