IOTA/IOTA-ES occultation update for (579) Sidonia / TYC 6919-00849-1 event on 2024 Jul 06, 05:48 UT Visible from Summary ------- On 2024 Jul 06 UT, the 88.544 km diameter asteroid (579) Sidonia will occult a 10.9 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 1.41 mag to 11.98 mag (the magnitude of the asteroid) for at most 8.410 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 Jul 06, 05:41 - 2024 Jul 06, 05:55 * geocentric midpoint of event [JD]: 2460497.74183255 * magnitude of target star: 10.92 * magnitude drop [mag]: 1.41 * estimated maximum duration [s]: 8.410 * Moon: 0 % sunlit, 166° distance * Sun: 160° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 132 * 1 sigma uncertainty interval [path widths]: +/- 0.21 * 1 sigma uncertainty interval [seconds]: +/- 3.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.028, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.028", 0.002", 84°) * approx speed of asteroid's shadow [km/s]: 10.5246 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6919-00849-1 by 579 Sidonia on 2024 Jul 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 -151 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 8 53 42 .. .. .. 8 36 20 .... -150 0 0 9 2 33 5 55 0.3 1 119 -21 9 44 9 8 21 36 10 1 58 8 4 26 .... -149 0 0 8 31 27 5 54 59.8 2 119 -22 9 12 35 7 50 55 9 30 13 7 33 56 -0.77 -148 0 0 8 1 46 5 54 59.0 3 120 -23 8 42 29 7 21 38 8 59 55 7 4 49 -0.89 -147 0 0 7 33 28 5 54 57.8 4 120 -24 8 13 47 6 53 43 8 31 3 6 37 3 -0.95 -146 0 0 7 6 32 5 54 56.4 5 120 -26 7 46 28 6 27 9 8 3 34 6 10 38 -0.99 -145 0 0 6 40 56 5 54 54.6 7 120 -27 7 20 31 6 1 54 7 37 28 5 45 31 -1.02 -144 0 0 6 16 39 5 54 52.5 8 120 -28 6 55 54 5 37 56 7 12 43 5 21 41 -1.03 -143 0 0 5 53 40 5 54 50.2 9 120 -29 6 32 36 5 15 15 6 49 16 4 59 7 -1.05 -142 0 0 5 31 57 5 54 47.6 10 120 -30 6 10 36 4 53 49 6 27 8 4 37 48 -1.05 -141 0 0 5 11 29 5 54 44.7 11 121 -31 5 49 52 4 33 37 6 6 17 4 17 42 -1.06 -140 0 0 4 52 16 5 54 41.5 12 121 -32 5 30 23 4 14 38 5 46 41 3 58 50 -1.07 -139 0 0 4 34 15 5 54 38.1 13 121 -33 5 12 8 3 56 51 5 28 20 3 41 8 -1.07 -138 0 0 4 17 26 5 54 34.4 14 121 -34 4 55 5 3 40 15 5 11 12 3 24 37 -1.08 -137 0 0 4 1 48 5 54 30.5 15 121 -35 4 39 15 3 24 49 4 55 16 3 9 16 -1.08 -136 0 0 3 47 20 5 54 26.3 16 121 -36 4 24 36 3 10 32 4 40 32 2 55 4 -1.08 -135 0 0 3 34 2 5 54 22.0 17 121 -37 4 11 7 2 57 23 4 26 58 2 42 0 -1.08 -134 0 0 3 21 52 5 54 17.3 18 122 -38 3 58 47 2 45 23 4 14 35 2 30 3 -1.08 -133 0 0 3 10 49 5 54 12.5 18 122 -39 3 47 36 2 34 29 4 3 20 2 19 13 -1.09 -132 0 0 3 0 55 5 54 7.4 19 122 -39 3 37 34 2 24 42 3 53 14 2 9 28 -1.09 -131 0 0 2 52 6 5 54 2.2 20 122 -40 3 28 38 2 16 0 3 44 15 2 0 50 -1.09 -130 0 0 2 44 24 5 53 56.7 21 122 -41 3 20 50 2 8 24 3 36 24 1 53 16 -1.09 -129 0 0 2 37 47 5 53 51.0 22 122 -42 3 14 7 2 1 53 3 29 39 1 46 47 -1.09 -128 0 0 2 32 16 5 53 45.1 23 123 -43 3 8 31 1 56 25 3 24 1 1 41 22 -1.09 -127 0 0 2 27 49 5 53 39.0 24 123 -44 3 4 0 1 52 2 3 19 28 1 37 0 -1.09 -126 0 0 2 24 26 5 53 32.7 25 123 -45 3 0 34 1 48 43 3 16 1 1 33 42 -1.09 -125 0 0 2 22 8 5 53 26.2 25 123 -45 2 58 13 1 46 27 3 13 39 1 31 27 -1.09 -124 0 0 2 20 53 5 53 19.5 26 124 -46 2 56 57 1 45 14 3 12 21 1 30 15 -1.09 -123 0 0 2 20 42 5 53 12.6 27 124 -47 2 56 45 1 45 4 3 12 9 1 30 5 -1.09 -122 0 0 2 21 34 5 53 5.6 28 124 -48 2 57 37 1 45 57 3 13 1 1 30 58 -1.09 -121 0 0 2 23 30 5 52 58.3 29 125 -48 2 59 33 1 47 52 3 14 57 1 32 54 -1.09 -120 0 0 2 26 29 5 52 50.9 29 125 -49 3 2 33 1 50 50 3 17 58 1 35 51 -1.09 -119 0 0 2 30 32 5 52 43.3 30 126 -50 3 6 37 1 54 51 3 22 3 1 39 51 -1.09 -118 0 0 2 35 37 5 52 35.6 31 126 -51 3 11 45 1 59 54 3 27 12 1 44 53 -1.09 -117 0 0 2 41 46 5 52 27.6 32 126 -51 3 17 58 2 6 0 3 33 25 1 50 57 -1.09 -116 0 0 2 48 58 5 52 19.5 32 127 -52 3 25 14 2 13 8 3 40 44 1 58 4 -1.09 -115 0 0 2 57 14 5 52 11.2 33 127 -52 3 33 34 2 21 19 3 49 6 2 6 14 -1.09 -114 0 0 3 6 34 5 52 2.7 34 128 -53 3 42 59 2 30 34 3 58 34 2 15 26 -1.09 -113 0 0 3 16 57 5 51 54.1 34 128 -54 3 53 29 2 40 51 4 9 6 2 25 41 -1.09 -112 0 0 3 28 25 5 51 45.3 35 129 -54 4 5 4 2 52 12 4 20 44 2 36 59 -1.09 -111 0 0 3 40 58 5 51 36.4 36 130 -55 4 17 44 3 4 37 4 33 27 2 49 21 -1.09 -110 0 0 3 54 35 5 51 27.3 36 130 -55 4 31 30 3 18 7 4 47 17 3 2 47 -1.09 -109 0 0 4 9 18 5 51 18.0 37 131 -55 4 46 22 3 32 40 5 2 13 3 17 17 -1.09 -108 0 0 4 25 6 5 51 8.6 37 132 -56 5 2 21 3 48 19 5 18 16 3 32 52 -1.09 -107 0 0 4 42 1 5 50 59.0 38 132 -56 5 19 26 4 5 3 5 35 26 3 49 32 -1.09 -106 0 0 5 0 2 5 50 49.2 38 133 -56 5 37 40 4 22 53 5 53 45 4 7 17 -1.09 -105 0 0 5 19 11 5 50 39.4 39 134 -57 5 57 1 4 41 50 6 13 12 4 26 9 -1.10 -104 0 0 5 39 28 5 50 29.3 39 135 -57 6 17 32 5 1 54 6 33 48 4 46 7 -1.10 -103 0 0 6 0 54 5 50 19.1 40 136 -57 6 39 12 5 23 5 6 55 35 5 7 13 -1.10 -102 0 0 6 23 28 5 50 8.8 40 136 -57 7 2 2 5 45 25 7 18 32 5 29 27 -1.10 -101 0 0 6 47 13 5 49 58.3 40 137 -57 7 26 3 6 8 54 7 42 40 5 52 49 -1.10 -100 0 0 7 12 9 5 49 47.7 41 138 -57 7 51 17 6 33 33 8 8 2 6 17 21 -1.10 - 99 0 0 7 38 17 5 49 37.0 41 139 -57 8 17 43 6 59 23 8 34 36 6 43 4 -1.10 - 98 0 0 8 5 38 5 49 26.1 41 140 -57 8 45 23 7 26 25 9 2 25 7 9 57 -1.10 - 97 0 0 8 34 12 5 49 15.0 42 141 -57 9 14 18 7 54 39 9 31 29 7 38 3 -1.10 - 96 0 0 9 4 0 5 49 3.9 42 142 -57 9 44 29 8 24 6 10 1 49 8 7 22 -1.10 - 95 0 0 9 35 5 5 48 52.6 42 144 -57 10 15 57 8 54 48 10 33 28 8 37 55 -1.10 - 94 0 0 10 7 26 5 48 41.2 42 145 -56 10 48 43 9 26 46 11 6 24 9 9 43 -1.10 - 93 0 0 10 41 5 5 48 29.7 42 146 -56 11 22 48 10 0 0 11 40 41 9 42 47 -1.10 - 92 0 0 11 16 4 5 48 18.1 42 147 -56 11 58 15 10 34 32 12 16 20 10 17 8 -1.11 - 91 0 0 11 52 23 5 48 6.4 42 148 -55 12 35 3 11 10 23 12 53 21 10 52 48 -1.11 - 90 0 0 12 30 4 5 47 54.5 42 149 -55 13 13 15 11 47 35 13 31 46 11 29 47 -1.11 - 89 0 0 13 9 8 5 47 42.6 42 151 -54 13 52 52 12 26 8 14 11 37 12 8 8 -1.11 - 88 0 0 13 49 37 5 47 30.6 42 152 -54 14 33 55 13 6 4 14 52 56 12 47 51 -1.11 - 87 0 0 14 31 32 5 47 18.5 42 153 -53 15 16 27 13 47 25 15 35 44 13 28 57 -1.11 - 86 0 0 15 14 55 5 47 6.3 41 154 -52 16 0 29 14 30 12 16 20 4 14 11 29 -1.12 - 85 0 0 15 59 49 5 46 54.1 41 156 -51 16 46 4 15 14 26 17 5 56 14 55 27 -1.12 - 84 0 0 16 46 14 5 46 41.7 41 157 -51 17 33 12 16 0 10 17 53 24 15 40 55 -1.12 - 83 0 0 17 34 12 5 46 29.4 40 158 -50 18 21 57 16 47 25 18 42 29 16 27 52 -1.12 - 82 0 0 18 23 46 5 46 17.0 40 159 -49 19 12 19 17 36 13 19 33 13 17 16 21 -1.12 - 81 0 0 19 14 57 5 46 4.5 39 161 -48 20 4 23 18 26 36 20 25 40 18 6 24 -1.12 - 80 0 0 20 7 49 5 45 52.1 39 162 -47 20 58 10 19 18 35 21 19 51 18 58 3 -1.13 - 79 0 0 21 2 22 5 45 39.6 38 163 -46 21 53 42 20 12 14 22 15 50 19 51 19 -1.13 - 78 0 0 21 58 41 5 45 27.2 38 164 -45 22 51 3 21 7 34 23 13 40 20 46 15 -1.13 - 77 0 0 22 56 47 5 45 14.7 37 165 -44 23 50 17 22 4 37 24 13 23 21 42 54 -1.13 - 76 0 0 23 56 43 5 45 2.3 36 167 -43 24 51 26 23 3 27 25 15 5 22 41 17 -1.14 - 75 0 0 24 58 33 5 44 50.0 35 168 -42 25 54 33 24 4 5 26 18 47 23 41 27 -1.14 - 74 0 0 26 2 19 5 44 37.7 34 169 -40 26 59 43 25 6 35 27 24 34 24 43 26 -1.14 - 73 0 0 27 8 6 5 44 25.5 34 170 -39 28 7 0 26 11 0 28 32 32 25 47 18 -1.14 - 72 0 0 28 15 57 5 44 13.4 33 171 -38 29 16 28 27 17 23 29 42 45 26 53 6 -1.15 - 71 0 0 29 25 57 5 44 1.4 32 172 -36 30 28 13 28 25 47 30 55 18 28 0 52 -1.15 - 70 0 0 30 38 9 5 43 49.6 30 173 -35 31 42 21 29 36 16 32 10 19 29 10 40 -1.15 - 69 0 0 31 52 40 5 43 38.0 29 174 -34 32 58 57 30 48 54 33 27 53 30 22 35 -1.16 - 68 0 0 33 9 35 5 43 26.6 28 175 -32 34 18 10 32 3 47 34 48 11 31 36 39 -1.16 - 67 0 0 34 29 0 5 43 15.4 27 176 -31 35 40 9 33 20 58 36 11 20 32 52 59 -1.16 - 66 0 0 35 51 4 5 43 4.4 26 177 -29 37 5 2 34 40 34 37 37 34 34 11 38 -1.17 - 65 0 0 37 15 54 5 42 53.8 24 178 -27 38 33 1 36 2 42 39 7 4 35 32 43 -1.17 - 64 0 0 38 43 41 5 42 43.5 23 179 -26 40 4 22 37 27 27 40 40 7 36 56 19 -1.17 - 63 0 0 40 14 37 5 42 33.6 21 180 -24 41 39 20 38 55 0 42 17 3 38 22 35 -1.18 - 62 0 0 41 48 55 5 42 24.2 20 181 -22 43 18 17 40 25 29 43 58 19 39 51 38 -1.18 - 61 0 0 43 26 53 5 42 15.2 18 182 -21 45 1 41 41 59 6 45 44 27 41 23 39 -1.19 - 60 0 0 45 8 54 5 42 6.7 16 183 -19 46 50 8 43 36 5 47 36 13 42 58 49 -1.20 - 59 0 0 46 55 26 5 41 58.8 14 184 -17 48 44 25 45 16 44 49 34 40 44 37 22 -1.21 - 58 0 0 48 47 6 5 41 51.6 13 184 -15 50 45 45 47 1 25 51 41 21 46 19 36 -1.22 - 57 0 0 50 44 48 5 41 45.2 11 185 -13 52 55 53 48 50 35 53 58 51 48 5 54 -1.24 - 56 0 0 52 49 46 5 41 39.7 8 186 -11 55 17 48 50 44 55 56 31 45 49 56 46 -1.27 - 55 0 0 55 4 2 5 41 35.1 6 187 -9 57 57 8 52 45 18 59 30 16 51 52 50 -1.33 - 54 0 0 57 31 1 5 41 31.9 4 188 -6 61 7 39 54 53 2 .. .. .. 53 55 5 -1.48 - 53 0 0 60 17 36 5 41 30.3 1 189 -3 .. .. .. 57 10 16 .. .. .. 56 4 54 -2.89 - 52 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 59 40 41 .. .. .. 58 24 35 .... Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.2 Data for the target star ------------------------ * name: TYC 6919-00849-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 20 27 24.0866 DE: -28 46 59.743 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 20 27 24.0867 DE: -28 46 59.743 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.9 * B mag [mag]: 11.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (579) Sidonia asteroid class: approx. diameter [km]: 89 approx. diameter ["]: 0.067 distance from Earth [AU]: 1.81260 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#67 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): 0.028", 0.002", 83.858° remarks: * orbital elements for (579)Sidonia : Mean anomaly = 346.7155785555 deg Arg. of pericenter = 229.1096120885 deg Long. of node = 82.6226705665 deg Inclination = 11.0172585839 deg Eccentricity = 0.0766037349 Semimajor axis = 3.0129306397 AU Perihelion dist = 2.7821288998 AU Mag: H = 7.93, G = 0.15 Epoch of elements : MJD 60497.24183308 TDT (2024 Jul 06.2418) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#672023Apr24,8.41,2024,7,6,5.803981,-0.447154,0.592031,-4.741146,-3.579086,-0.001868,0.000419,0.000001,0.000000 -64.5361,-28.7015,94.15,22.63,False TYC 6919-00849-1,20.45669071,-28.7832619,11.22,10.92,10.76,0.0,0,,20.48200120,-28.7015073,1.40,1.20,0,0,0 579,Sidonia,11.98,88.544,1.8126,0,0,-1.748,-17.36,,6.0,0 0,346.6700,2024,7,6,229.1096,82.6227,11.0173,0.07660,3.01293,2.78213,7.93,5.0,0.15 1.212,0.0277,0.0015,84,0.0143,Known errors,0.85,0,-1,-1 20240706_0849-1,60140.19 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 04:29 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org