IOTA/IOTA-ES occultation update for (404) Arsinoe / TYC 4967-01183-1 event on 2024 Aug 04, 23:04 UT Visible from Summary ------- On 2024 Aug 04 UT, the 95.462 km diameter asteroid (404) Arsinoe will occult a 11.0 mag star in the constellation Virgo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.74 mag to 13.66 mag (the magnitude of the asteroid) for at most 3.120 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 Aug 04, 23:01 - 2024 Aug 04, 23:08 * geocentric midpoint of event [JD]: 2460527.46169638 * magnitude of target star: 11.01 * magnitude drop [mag]: 2.74 * estimated maximum duration [s]: 3.120 * Moon: 0 % sunlit, 66° distance * Sun: 72° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 99 * 1 sigma uncertainty interval [path widths]: +/- 0.04 * 1 sigma uncertainty interval [seconds]: +/- 0.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.009, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.010", 0.002", 115°) * approx speed of asteroid's shadow [km/s]: 30.5783 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 4967-01183-1 by 404 Arsinoe on 2024 Aug 4 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 178 0 0 19 36 1 23 1 28.5 1 92 73 19 9 15 20 2 44 19 7 14 20 4 44 .... 179 0 0 19 33 56 23 1 28.6 2 92 73 19 7 9 20 0 39 19 5 8 20 2 40 0.19 -180 0 0 19 31 16 23 1 28.7 2 92 74 19 4 28 19 58 0 19 2 27 20 0 0 0.22 -179 0 0 19 28 1 23 1 28.9 3 93 75 19 1 13 19 54 46 18 59 11 19 56 47 0.23 -178 0 0 19 24 12 23 1 29.1 4 93 76 18 57 22 19 50 58 18 55 21 19 52 59 0.24 -177 0 0 19 19 48 23 1 29.4 5 93 77 18 52 57 19 46 35 18 50 55 19 48 36 0.24 -176 0 0 19 14 49 23 1 29.8 6 94 78 18 47 56 19 41 38 18 45 55 19 43 39 0.25 -175 0 0 19 9 15 23 1 30.2 7 94 79 18 42 21 19 36 5 18 40 19 19 38 7 0.25 -174 0 0 19 3 6 23 1 30.7 8 94 80 18 36 10 19 29 58 18 34 8 19 32 0 0.25 -173 0 0 18 56 22 23 1 31.2 9 95 81 18 29 24 19 23 16 18 27 22 19 25 18 0.25 -172 0 0 18 49 2 23 1 31.8 10 95 82 18 22 2 19 15 59 18 20 0 19 18 1 0.25 -171 0 0 18 41 8 23 1 32.5 11 95 83 18 14 6 19 8 7 18 12 3 19 10 9 0.26 -170 0 0 18 32 38 23 1 33.2 12 96 84 18 5 33 18 59 39 18 3 30 19 1 41 0.26 -169 0 0 18 23 32 23 1 34.0 13 96 85 17 56 25 18 50 36 17 54 22 18 52 39 0.26 -168 0 0 18 13 51 23 1 34.8 14 96 86 17 46 41 18 40 58 17 44 38 18 43 1 0.26 -167 0 0 18 3 34 23 1 35.7 15 96 87 17 36 21 18 30 44 17 34 18 18 32 47 0.26 -166 0 0 17 52 42 23 1 36.7 16 97 87 17 25 25 18 19 55 17 23 22 18 21 57 0.26 -165 0 0 17 41 13 23 1 37.7 17 97 88 17 13 53 18 8 29 17 11 49 18 10 32 0.26 -164 0 0 17 29 8 23 1 38.8 18 97 89 17 1 45 17 56 28 16 59 41 17 58 31 0.26 -163 0 0 17 16 27 23 1 40.0 19 98 88 16 49 0 17 43 50 16 46 56 17 45 54 0.26 -162 0 0 17 3 10 23 1 41.2 20 98 88 16 35 39 17 30 37 16 33 34 17 32 41 0.26 -161 0 0 16 49 16 23 1 42.5 21 98 87 16 21 41 17 16 47 16 19 36 17 18 51 0.26 -160 0 0 16 34 45 23 1 43.8 22 98 86 16 7 6 17 2 20 16 5 1 17 4 25 0.26 -159 0 0 16 19 38 23 1 45.2 23 99 85 15 51 55 16 47 17 15 49 49 16 49 22 0.26 -158 0 0 16 3 54 23 1 46.7 24 99 84 15 36 7 16 31 38 15 34 1 16 33 43 0.26 -157 0 0 15 47 33 23 1 48.3 25 99 83 15 19 41 16 15 21 15 17 35 16 17 27 0.26 -156 0 0 15 30 35 23 1 49.9 26 99 82 15 2 38 15 58 28 15 0 32 16 0 34 0.26 -155 0 0 15 13 0 23 1 51.6 27 99 81 14 44 58 15 40 58 14 42 51 15 43 4 0.26 -154 0 0 14 54 47 23 1 53.3 28 100 80 14 26 41 15 22 50 14 24 34 15 24 57 0.26 -153 0 0 14 35 58 23 1 55.2 29 100 79 14 7 46 15 4 5 14 5 38 15 6 12 0.26 -152 0 0 14 16 30 23 1 57.0 30 100 78 13 48 13 14 44 43 13 46 5 14 46 51 0.26 -151 0 0 13 56 26 23 1 59.0 31 100 77 13 28 3 14 24 44 13 25 55 14 26 52 0.26 -150 0 0 13 35 43 23 2 1.0 32 100 76 13 7 15 14 4 7 13 5 7 14 6 16 0.26 -149 0 0 13 14 23 23 2 3.1 33 100 75 12 45 50 13 42 53 12 43 41 13 45 2 0.26 -148 0 0 12 52 26 23 2 5.3 34 100 74 12 23 46 13 21 1 12 21 37 13 23 10 0.26 -147 0 0 12 29 51 23 2 7.5 35 101 73 12 1 5 12 58 32 11 58 55 13 0 41 0.26 -146 0 0 12 6 38 23 2 9.8 36 101 72 11 37 46 12 35 25 11 35 36 12 37 35 0.26 -145 0 0 11 42 47 23 2 12.2 37 101 71 11 13 50 12 11 40 11 11 39 12 13 51 0.26 -144 0 0 11 18 19 23 2 14.7 38 101 70 10 49 15 11 47 18 10 47 4 11 49 29 0.26 -143 0 0 10 53 13 23 2 17.2 39 101 69 10 24 3 11 22 19 10 21 51 11 24 30 0.26 -142 0 0 10 27 30 23 2 19.8 40 101 68 9 58 14 10 56 42 9 56 1 10 58 54 0.26 -141 0 0 10 1 10 23 2 22.4 41 101 67 9 31 47 10 30 28 9 29 34 10 32 40 0.26 -140 0 0 9 34 12 23 2 25.2 42 101 65 9 4 42 10 3 37 9 2 29 10 5 50 0.26 -139 0 0 9 6 37 23 2 28.0 43 101 64 8 37 1 9 36 8 8 34 47 9 38 22 0.26 -138 0 0 8 38 25 23 2 30.9 44 100 63 8 8 42 9 8 3 8 6 27 9 10 17 0.26 -137 0 0 8 9 36 23 2 33.8 45 100 62 7 39 47 8 39 22 7 37 32 8 41 36 0.26 -136 0 0 7 40 12 23 2 36.8 47 100 61 7 10 15 8 10 3 7 7 59 8 12 18 0.26 -135 0 0 7 10 11 23 2 39.9 48 100 60 6 40 7 7 40 9 6 37 51 7 42 25 0.26 -134 0 0 6 39 34 23 2 43.1 49 100 59 6 9 23 7 9 39 6 7 7 7 11 55 0.26 -133 0 0 6 8 21 23 2 46.3 50 99 58 5 38 4 6 38 34 5 35 47 6 40 50 0.26 -132 0 0 5 36 34 23 2 49.6 51 99 57 5 6 10 6 6 53 5 3 52 6 9 10 0.26 -131 0 0 5 4 12 23 2 52.9 52 99 55 4 33 41 5 34 38 4 31 23 5 36 56 0.26 -130 0 0 4 31 16 23 2 56.4 53 98 54 4 0 38 5 1 49 3 58 20 5 4 7 0.26 -129 0 0 3 57 47 23 2 59.9 54 98 53 3 27 2 4 28 27 3 24 43 4 30 45 0.26 -128 0 0 3 23 45 23 3 3.4 55 97 52 2 52 53 3 54 31 2 50 33 3 56 50 0.26 -127 0 0 2 49 10 23 3 7.0 56 97 51 2 18 11 3 20 3 2 15 51 3 22 23 0.26 -126 0 0 2 14 4 23 3 10.7 57 96 50 1 42 58 2 45 4 1 40 37 2 47 24 0.26 -125 0 0 1 38 26 23 3 14.5 58 95 48 1 7 14 2 9 33 1 4 53 2 11 54 0.26 -124 0 0 1 2 19 23 3 18.3 59 94 47 0 31 0 1 33 33 0 28 38 1 35 54 0.26 -123 0 0 0 25 43 23 3 22.1 61 94 46 - 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33 0 0 -46 35 13 23 7 58.6 20 290 -41 -47 2 48 -46 7 41 -47 4 53 -46 5 37 0.26 - 32 0 0 -46 46 1 23 7 59.5 19 290 -41 -47 13 32 -46 18 33 -47 15 36 -46 16 29 0.26 - 31 0 0 -46 56 21 23 8 0.4 19 289 -42 -47 23 48 -46 28 57 -47 25 52 -46 26 53 0.26 - 30 0 0 -47 6 14 23 8 1.2 18 288 -43 -47 33 38 -46 38 54 -47 35 42 -46 36 51 0.26 - 29 0 0 -47 15 41 23 8 2.0 17 287 -43 -47 43 0 -46 48 24 -47 45 4 -46 46 21 0.26 - 28 0 0 -47 24 40 23 8 2.8 17 287 -44 -47 51 57 -46 57 28 -47 54 0 -46 55 25 0.26 - 27 0 0 -47 33 14 23 8 3.5 16 286 -44 -48 0 27 -47 6 4 -48 2 30 -47 4 2 0.26 - 26 0 0 -47 41 21 23 8 4.2 15 285 -45 -48 8 31 -47 14 15 -48 10 34 -47 12 12 0.26 - 25 0 0 -47 49 2 23 8 4.8 14 284 -45 -48 16 9 -47 21 59 -48 18 12 -47 19 57 0.26 - 24 0 0 -47 56 18 23 8 5.5 14 284 -46 -48 23 22 -47 29 17 -48 25 24 -47 27 15 0.26 - 23 0 0 -48 3 8 23 8 6.1 13 283 -46 -48 30 9 -47 36 10 -48 32 11 -47 34 8 0.26 - 22 0 0 -48 9 32 23 8 6.6 12 282 -47 -48 36 30 -47 42 37 -48 38 33 -47 40 35 0.26 - 21 0 0 -48 15 31 23 8 7.2 12 281 -47 -48 42 27 -47 48 38 -48 44 29 -47 46 37 0.26 - 20 0 0 -48 21 5 23 8 7.7 11 281 -48 -48 47 59 -47 54 15 -48 50 1 -47 52 13 0.26 - 19 0 0 -48 26 14 23 8 8.1 10 280 -48 -48 53 6 -47 59 26 -48 55 7 -47 57 24 0.26 - 18 0 0 -48 30 58 23 8 8.6 10 279 -49 -48 57 48 -48 4 12 -48 59 49 -48 2 11 0.26 - 17 0 0 -48 35 17 23 8 9.0 9 278 -49 -49 2 6 -48 8 33 -49 4 7 -48 6 32 0.27 - 16 0 0 -48 39 12 23 8 9.4 8 278 -50 -49 5 59 -48 12 29 -49 8 0 -48 10 28 0.27 - 15 0 0 -48 42 42 23 8 9.7 8 277 -50 -49 9 27 -48 16 0 -49 11 29 -48 14 0 0.27 - 14 0 0 -48 45 48 23 8 10.1 7 276 -51 -49 12 32 -48 19 7 -49 14 33 -48 17 7 0.27 - 13 0 0 -48 48 29 23 8 10.3 6 275 -51 -49 15 12 -48 21 50 -49 17 13 -48 19 49 0.27 - 12 0 0 -48 50 46 23 8 10.6 6 275 -51 -49 17 28 -48 24 8 -49 19 29 -48 22 7 0.27 - 11 0 0 -48 52 39 23 8 10.8 5 274 -52 -49 19 20 -48 26 1 -49 21 21 -48 24 1 0.27 - 10 0 0 -48 54 8 23 8 11.1 4 273 -52 -49 20 49 -48 27 31 -49 22 49 -48 25 30 0.28 - 9 0 0 -48 55 13 23 8 11.2 4 272 -53 -49 21 53 -48 28 36 -49 23 54 -48 26 35 0.28 - 8 0 0 -48 55 53 23 8 11.4 3 272 -53 -49 22 33 -48 29 16 -49 24 34 -48 27 16 0.29 - 7 0 0 -48 56 10 23 8 11.5 2 271 -54 -49 22 49 -48 29 33 -49 24 50 -48 27 33 0.30 - 6 0 0 -48 56 2 23 8 11.6 2 270 -54 -49 22 42 -48 29 25 -49 24 43 -48 27 25 0.31 - 5 0 0 -48 55 30 23 8 11.7 1 269 -54 -49 22 11 -48 28 53 -49 24 11 -48 26 53 0.34 - 4 0 0 -48 54 35 23 8 11.7 1 269 -55 -49 21 15 -48 27 57 -49 23 16 -48 25 57 0.45 Uncertainty in time = +/- 0 secs Prediction of 2023 Jul 15.2 Data for the target star ------------------------ * name: TYC 4967-01183-1 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 13 43 47.8226 DE: -01 15 07.962 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 13 43 47.8221 DE: -01 15 07.959 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.0 * B mag [mag]: 11.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (404) Arsinoe asteroid class: approx. diameter [km]: 95 approx. diameter ["]: 0.061 distance from Earth [AU]: 2.16470 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#144 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): 0.010", 0.002", 114.875° remarks: * orbital elements for (404)Arsinoe : Mean anomaly = 12.0924145506 deg Arg. of pericenter = 120.5966341972 deg Long. of node = 92.4695829312 deg Inclination = 14.0979259469 deg Eccentricity = 0.2014502082 Semimajor axis = 2.5925177146 AU Perihelion dist = 2.0702544813 AU Mag: H = 9.16, G = 0.15 Epoch of elements : MJD 60526.96169641 TDT (2024 Aug 04.9617) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1442023Apr24,3.12,2024,8,4,23.080713,-0.140069,-0.209436,14.291715,-9.676171,0.004709,-0.001556,0.000000,0.000000 -93.9468,-1.3747,-164.70,16.90,False TYC 4967-01183-1,13.72995075,-1.2522118,11.44,11.01,10.78,0.0,0,,13.75093238,-1.3747143,2.74,2.55,0,0,0 404,Arsinoe,13.66,95.462,2.1647,0,0,3.872,-39.31,,4.8,0 0,11.8653,2024,8,4,120.5966,92.4696,14.0979,0.20145,2.59252,2.07025,9.16,5.0,0.15 1.038,0.0097,0.0017,115,0.0023,Known errors,1.10,0,-1,-1 20240804_1183-1,60140.23 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 05:34 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org