IOTA/IOTA-ES occultation update for (2559) Svoboda / TYC 1771-00978-1 event on 2024 Feb 04, 00:57 UT Visible from Summary ------- On 2024 Feb 04 UT, the 21.841 km diameter asteroid (2559) Svoboda will occult a 11.7 mag star in the constellation Aries for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.58 mag to 17.23 mag (the magnitude of the asteroid) for at most 1.180 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: 97 * date and approx. time of event: 2024 Feb 04, 00:53 - 2024 Feb 04, 01:02 * geocentric midpoint of event [JD]: 2460344.54008867 * magnitude of target star: 11.66 * magnitude drop [mag]: 5.58 * estimated maximum duration [s]: 1.180 * Moon: 39 % sunlit, 165° distance * Sun: 90° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 29 * 1 sigma uncertainty interval [path widths]: +/- 0.40 * 1 sigma uncertainty interval [seconds]: +/- 1.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.018, +/- 0.008) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.003", 66°) * approx speed of asteroid's shadow [km/s]: 18.5593 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1771-00978-1 by 2559 Svoboda on 2024 Feb 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 147 0 0 29 29 27 0 53 27.0 0 61 39 29 20 16 29 38 39 29 13 1 29 45 57 .... 148 0 0 29 59 33 0 53 27.1 1 61 39 29 50 20 30 8 47 29 43 3 30 16 7 -0.72 149 0 0 30 29 59 0 53 27.4 2 62 39 30 20 44 30 39 16 30 13 26 30 46 38 -0.80 150 0 0 31 0 46 0 53 27.8 3 62 39 30 51 28 31 10 5 30 44 8 31 17 29 -0.83 151 0 0 31 31 51 0 53 28.3 4 63 39 31 22 31 31 41 13 31 15 9 31 48 39 -0.85 152 0 0 32 3 15 0 53 29.0 5 63 39 31 53 52 32 12 38 31 46 29 32 20 6 -0.86 153 0 0 32 34 55 0 53 29.8 6 64 38 32 25 30 32 44 21 32 18 5 32 51 50 -0.87 154 0 0 33 6 51 0 53 30.8 7 64 38 32 57 24 33 16 19 32 49 57 33 23 50 -0.88 155 0 0 33 39 1 0 53 31.9 8 65 38 33 29 32 33 48 32 33 22 3 33 56 5 -0.88 156 0 0 34 11 26 0 53 33.1 9 65 38 34 1 55 34 20 58 33 54 24 34 28 33 -0.88 157 0 0 34 44 2 0 53 34.4 10 66 37 34 34 29 34 53 37 34 26 57 35 1 13 -0.88 158 0 0 35 16 50 0 53 35.9 11 67 37 35 7 15 35 26 27 34 59 41 35 34 5 -0.89 159 0 0 35 49 49 0 53 37.5 12 67 37 35 40 11 35 59 28 35 32 36 36 7 7 -0.89 160 0 0 36 22 56 0 53 39.3 13 68 36 36 13 16 36 32 37 36 5 39 36 40 18 -0.89 161 0 0 36 56 11 0 53 41.1 14 69 36 36 46 29 37 5 54 36 38 51 37 13 36 -0.89 162 0 0 37 29 32 0 53 43.1 15 69 36 37 19 49 37 39 17 37 12 9 37 47 1 -0.89 163 0 0 38 2 59 0 53 45.2 16 70 35 37 53 14 38 12 45 37 45 32 38 20 31 -0.89 164 0 0 38 36 29 0 53 47.4 17 71 35 38 26 43 38 46 18 38 18 59 38 54 5 -0.89 165 0 0 39 10 2 0 53 49.8 18 71 34 39 0 14 39 19 53 38 52 30 39 27 41 -0.89 166 0 0 39 43 37 0 53 52.2 19 72 34 39 33 47 39 53 29 39 26 1 40 1 19 -0.90 167 0 0 40 17 12 0 53 54.7 20 73 33 40 7 20 40 27 5 39 59 33 40 34 56 -0.90 168 0 0 40 50 45 0 53 57.4 21 74 33 40 40 52 41 0 40 40 33 4 41 8 32 -0.90 169 0 0 41 24 16 0 54 0.1 21 74 32 41 14 22 41 34 12 41 6 33 41 42 6 -0.90 170 0 0 41 57 43 0 54 2.9 22 75 32 41 47 47 42 7 40 41 39 57 42 15 35 -0.90 171 0 0 42 31 5 0 54 5.8 23 76 31 42 21 8 42 41 4 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58 49 56 -0.92 - 22 0 0 58 11 14 1 1 23.2 22 282 -48 58 1 38 58 20 52 57 54 3 58 28 31 -0.92 - 21 0 0 57 49 18 1 1 25.2 22 283 -48 57 39 40 57 58 58 57 32 4 58 6 38 -0.92 - 20 0 0 57 26 56 1 1 27.1 21 284 -49 57 17 16 57 36 37 57 9 38 57 44 19 -0.92 - 19 0 0 57 4 6 1 1 29.0 21 285 -49 56 54 24 57 13 50 56 46 45 57 21 33 -0.92 - 18 0 0 56 40 50 1 1 30.9 20 286 -50 56 31 6 56 50 35 56 23 25 56 58 20 -0.93 - 17 0 0 56 17 6 1 1 32.8 19 287 -50 56 7 21 56 26 54 55 59 39 56 34 40 -0.93 - 16 0 0 55 52 57 1 1 34.6 19 288 -50 55 43 9 56 2 45 55 35 26 56 10 33 -0.93 - 15 0 0 55 28 20 1 1 36.4 18 289 -51 55 18 32 55 38 11 55 10 47 55 46 0 -0.93 - 14 0 0 55 3 18 1 1 38.2 17 290 -51 54 53 28 55 13 10 54 45 42 55 21 0 -0.93 - 13 0 0 54 37 49 1 1 39.9 17 291 -52 54 27 57 54 47 43 54 20 10 54 55 34 -0.93 - 12 0 0 54 11 55 1 1 41.5 16 291 -52 54 2 2 54 21 50 53 54 14 54 29 42 -0.94 - 11 0 0 53 45 35 1 1 43.1 15 292 -53 53 35 41 53 55 31 53 27 52 54 3 24 -0.94 - 10 0 0 53 18 50 1 1 44.7 14 293 -53 53 8 55 53 28 47 53 1 5 53 36 41 -0.94 - 9 0 0 52 51 40 1 1 46.2 14 294 -54 52 41 44 53 1 39 52 33 53 53 9 34 -0.94 - 8 0 0 52 24 7 1 1 47.6 13 295 -54 52 14 9 52 34 6 52 6 18 52 42 2 -0.95 - 7 0 0 51 56 9 1 1 49.0 12 296 -54 51 46 11 52 6 10 51 38 19 52 14 6 -0.95 - 6 0 0 51 27 49 1 1 50.3 11 297 -55 51 17 50 51 37 50 51 9 57 51 45 47 -0.95 - 5 0 0 50 59 6 1 1 51.5 11 297 -55 50 49 6 51 9 8 50 41 13 51 17 5 -0.96 - 4 0 0 50 30 1 1 1 52.7 10 298 -55 50 20 1 50 40 3 50 12 7 50 48 1 -0.96 - 3 0 0 50 0 35 1 1 53.8 9 299 -56 49 50 35 50 10 38 49 42 41 50 18 36 -0.97 - 2 0 0 49 30 49 1 1 54.8 8 300 -56 49 20 48 49 40 52 49 12 54 49 48 50 -0.98 - 1 0 0 49 0 43 1 1 55.7 7 300 -56 48 50 42 49 10 46 48 42 47 49 18 44 -0.99 0 0 0 48 30 18 1 1 56.6 7 301 -56 48 20 17 48 40 21 48 12 22 48 48 20 -1.00 1 0 0 47 59 35 1 1 57.3 6 302 -57 47 49 34 48 9 38 47 41 40 48 17 37 -1.01 2 0 0 47 28 35 1 1 58.0 5 303 -57 47 18 34 47 38 38 47 10 40 47 46 37 -1.03 3 0 0 46 57 19 1 1 58.5 4 303 -57 46 47 19 47 7 22 46 39 25 47 15 20 -1.06 4 0 0 46 25 48 1 1 59.0 3 304 -57 46 15 48 46 35 50 46 7 54 46 43 49 -1.10 5 0 0 45 54 3 1 1 59.4 2 305 -57 45 44 3 46 4 5 45 36 10 46 12 3 -1.17 6 0 0 45 22 5 1 1 59.6 2 306 -57 45 12 6 45 32 6 45 4 13 45 40 3 -1.33 7 0 0 44 49 55 1 1 59.8 1 306 -57 44 39 56 44 59 55 44 32 4 45 7 52 -1.94 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 13.2 Data for the target star ------------------------ * name: TYC 1771-00978-1 * constellation : Aries * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 02 35 37.9268 DE: +25 21 24.697 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 02 35 37.9267 DE: +25 21 24.696 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.7 * B mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2559) Svoboda asteroid class: approx. diameter [km]: 22 approx. diameter ["]: 0.014 distance from Earth [AU]: 2.14310 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#50 date of fit: 2023 Apr 27 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", 66.228° remarks: * orbital elements for (2559)Svoboda : Mean anomaly = 354.5010021269 deg Arg. of pericenter = 87.0264721712 deg Long. of node = 350.1771016922 deg Inclination = 8.8779018778 deg Eccentricity = 0.1543010930 Semimajor axis = 2.7887790218 AU Perihelion dist = 2.3584673705 AU Mag: H = 12.57, G = 0.15 Epoch of elements : MJD 60344.04008891 TDT (2024 Feb 04.0401) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Apr27,1.18,2024,2,4,0.962128,-0.103005,0.655989,10.348230,1.627191,0.005471,0.001793,0.000000,0.000000 -108.8805,25.4630,169.02,-16.43,False TYC 1771-00978-1,2.59386859,25.3568604,12.03,11.66,11.46,0.0,0,,2.61696327,25.4630321,5.58,5.33,0,0,0 2559,Svoboda,17.23,21.841,2.1431,0,0,3.136,6.68,,1.6,0 0,354.2809,2024,2,3,87.0265,350.1771,8.8779,0.15430,2.78878,2.35847,12.57,5.0,0.15 1.396,0.0193,0.0026,66,0.0056,Known errors,1.34,0,-1,-1 20240204_0978-1,60138.15 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 13, 03:40 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org