IOTA/IOTA-ES occultation update for (196) Philomela / UCAC4 313-242800 event on 2023 Nov 06, 16:50 UT Visible from Europe Summary ------- On 2023 Nov 06 UT, the 140.1 km diameter asteroid (196) Philomela will occult a 11.6 mag star in the constellation Sagittarius for observers along a path across Europe. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.40 mag to 12.62 mag (the magnitude of the asteroid) for at most 4.470 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: 2023 Nov 06, 16:48 - 2023 Nov 06, 16:51 * geocentric midpoint of event [JD]: 2460255.20163683 * magnitude of target star: 11.57 * magnitude drop [mag]: 1.40 * estimated maximum duration [s]: 4.470 * Moon: 38 % sunlit, 137° distance * Sun: 61° distance * rough path description: Europe Additional comments ------------------- low altitude The occultation path -------------------- * approximate projected width [km]: 375 * 1 sigma uncertainty interval [path widths]: +/- 0.02 * 1 sigma uncertainty interval [seconds]: +/- 0.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.005, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.005", 0.001", 90°) * approx speed of asteroid's shadow [km/s]: 31.3181 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 313-242800 by 196 Philomela on 2023 Nov 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 0 0 0 .. .. .... .. .. .. .. .. .. 49 47 4 .. .. .. 49 40 44 .. .. .. .... 0 0 0 .. .. .... .. .. .. .. .. .. 49 8 6 .. .. .. 49 1 55 .. .. .. .... - 61 0 0 50 49 25 16 49 6.5 0 137 22 48 30 27 .. .. .. 48 24 25 .. .. .. .... - 60 0 0 50 9 46 16 49 6.6 1 138 22 47 54 6 .. .. .. 47 48 11 .. .. .. -1.21 - 59 0 0 49 31 38 16 49 6.8 2 139 23 47 19 0 52 5 7 47 13 12 52 12 58 -1.76 - 58 0 0 48 54 59 16 49 7.2 3 140 23 46 45 10 51 24 10 46 39 28 51 31 45 -1.98 - 57 0 0 48 19 46 16 49 7.7 4 140 23 46 12 32 50 45 4 46 6 56 50 52 25 -2.11 - 56 0 0 47 45 58 16 49 8.3 5 141 24 45 41 6 50 7 43 45 35 36 50 14 52 -2.19 - 55 0 0 47 13 30 16 49 9.0 6 142 24 45 10 50 49 32 2 45 5 26 49 39 0 -2.24 - 54 0 0 46 42 22 16 49 9.9 6 143 24 44 41 45 48 57 58 44 36 25 49 4 46 -2.28 - 53 0 0 46 12 32 16 49 10.9 7 143 24 44 13 49 48 25 27 44 8 33 48 32 5 -2.31 - 52 0 0 45 43 58 16 49 11.9 8 144 25 43 47 1 47 54 25 43 41 49 48 0 55 -2.33 - 51 0 0 45 16 39 16 49 13.1 9 145 25 43 21 20 47 24 50 43 16 12 47 31 12 -2.35 - 50 0 0 44 50 34 16 49 14.4 10 146 25 42 56 46 46 56 39 42 51 42 47 2 54 -2.37 - 49 0 0 44 25 41 16 49 15.7 10 146 25 42 33 18 46 29 51 42 28 18 46 36 0 -2.38 - 48 0 0 44 2 0 16 49 17.2 11 147 25 42 10 56 46 4 23 42 6 0 46 10 26 -2.39 - 47 0 0 43 39 30 16 49 18.7 12 148 25 41 49 40 45 40 15 41 44 46 45 46 12 -2.40 - 46 0 0 43 18 9 16 49 20.4 12 149 25 41 29 27 45 17 24 41 24 36 45 23 16 -2.41 - 45 0 0 42 57 58 16 49 22.1 13 149 24 41 10 19 44 55 49 41 5 31 45 1 37 -2.42 - 44 0 0 42 38 55 16 49 23.9 14 150 24 40 52 15 44 35 29 40 47 29 44 41 13 -2.43 - 43 0 0 42 21 0 16 49 25.8 14 151 24 40 35 14 44 16 24 40 30 30 44 22 3 -2.43 - 42 0 0 42 4 13 16 49 27.7 15 152 24 40 19 17 43 58 31 40 14 35 44 4 7 -2.44 - 41 0 0 41 48 32 16 49 29.7 16 153 24 40 4 22 43 41 51 39 59 42 43 47 24 -2.45 - 40 0 0 41 33 58 16 49 31.8 16 154 23 39 50 30 43 26 22 39 45 52 43 31 52 -2.45 - 39 0 0 41 20 29 16 49 33.9 17 154 23 39 37 40 43 12 5 39 33 3 43 17 32 -2.46 - 38 0 0 41 8 7 16 49 36.1 17 155 23 39 25 52 42 58 57 39 21 17 43 4 22 -2.46 - 37 0 0 40 56 49 16 49 38.4 18 156 22 39 15 6 42 47 0 39 10 32 42 52 22 -2.47 - 36 0 0 40 46 37 16 49 40.7 18 157 22 39 5 22 42 36 11 39 0 49 42 41 32 -2.47 - 35 0 0 40 37 29 16 49 43.0 19 158 22 38 56 39 42 26 32 38 52 8 42 31 51 -2.47 - 34 0 0 40 29 26 16 49 45.5 19 159 21 38 48 58 42 18 1 38 44 27 42 23 19 -2.48 - 33 0 0 40 22 27 16 49 47.9 19 160 21 38 42 18 42 10 39 38 37 48 42 15 55 -2.48 - 32 0 0 40 16 32 16 49 50.4 20 161 20 38 36 39 42 4 24 38 32 10 42 9 39 -2.48 - 31 0 0 40 11 42 16 49 52.9 20 161 20 38 32 1 41 59 17 38 27 32 42 4 32 -2.49 - 30 0 0 40 7 55 16 49 55.5 20 162 19 38 28 24 41 55 18 38 23 56 42 0 32 -2.49 - 29 0 0 40 5 12 16 49 58.1 21 163 19 38 25 49 41 52 26 38 21 20 41 57 40 -2.49 - 28 0 0 40 3 33 16 50 0.7 21 164 18 38 24 14 41 50 42 38 19 46 41 55 55 -2.49 - 27 0 0 40 2 58 16 50 3.4 21 165 17 38 23 40 41 50 6 38 19 12 41 55 19 -2.50 - 26 0 0 40 3 27 16 50 6.1 21 166 17 38 24 7 41 50 36 38 19 39 41 55 49 -2.50 - 25 0 0 40 4 59 16 50 8.8 21 167 16 38 25 35 41 52 15 38 21 7 41 57 28 -2.50 - 24 0 0 40 7 36 16 50 11.5 22 168 16 38 28 4 41 55 0 38 23 36 42 0 14 -2.50 - 23 0 0 40 11 16 16 50 14.3 22 169 15 38 31 34 41 58 53 38 27 5 42 4 8 -2.50 - 22 0 0 40 16 1 16 50 17.0 22 170 14 38 36 6 42 3 54 38 31 36 42 9 10 -2.51 - 21 0 0 40 21 49 16 50 19.8 22 171 14 38 41 38 42 10 3 38 37 8 42 15 20 -2.51 - 20 0 0 40 28 42 16 50 22.6 22 172 13 38 48 12 42 17 21 38 43 41 42 22 38 -2.51 - 19 0 0 40 36 40 16 50 25.3 22 173 12 38 55 47 42 25 46 38 51 15 42 31 6 -2.51 - 18 0 0 40 45 42 16 50 28.1 22 174 11 39 4 24 42 35 21 38 59 51 42 40 42 -2.51 - 17 0 0 40 55 50 16 50 30.9 22 175 11 39 14 3 42 46 5 39 9 29 42 51 28 -2.51 - 16 0 0 41 7 3 16 50 33.7 21 176 10 39 24 44 42 57 58 39 20 8 43 3 23 -2.51 - 15 0 0 41 19 21 16 50 36.4 21 177 9 39 36 27 43 11 2 39 31 50 43 16 30 -2.52 - 14 0 0 41 32 46 16 50 39.2 21 178 8 39 49 12 43 25 17 39 44 34 43 30 47 -2.52 - 13 0 0 41 47 17 16 50 41.9 21 179 8 40 3 1 43 40 43 39 58 20 43 46 16 -2.52 - 12 0 0 42 2 54 16 50 44.6 21 180 7 40 17 52 43 57 21 40 13 10 44 2 58 -2.52 - 11 0 0 42 19 39 16 50 47.3 20 181 6 40 33 47 44 15 12 40 29 2 44 20 52 -2.52 - 10 0 0 42 37 33 16 50 49.9 20 181 5 40 50 45 44 34 17 40 45 58 44 40 1 -2.52 - 9 0 0 42 56 34 16 50 52.6 20 182 5 41 8 47 44 54 36 41 3 58 45 0 25 -2.52 - 8 0 0 43 16 45 16 50 55.2 19 183 4 41 27 53 45 16 12 41 23 2 45 22 5 -2.52 - 7 0 0 43 38 6 16 50 57.7 19 184 3 41 48 5 45 39 4 41 43 11 45 45 2 -2.52 - 6 0 0 44 0 38 16 51 0.3 18 185 2 42 9 22 46 3 15 42 4 25 46 9 18 -2.53 - 5 0 0 44 24 21 16 51 2.8 18 186 1 42 31 45 46 28 46 42 26 44 46 34 55 -2.53 - 4 0 0 44 49 16 16 51 5.2 18 187 0 42 55 15 46 55 37 42 50 10 47 1 53 -2.53 - 3 0 0 45 15 25 16 51 7.6 17 188 0 43 19 51 47 23 53 43 14 43 47 30 16 -2.53 - 2 0 0 45 42 48 16 51 9.9 16 189 -1 43 45 35 47 53 34 43 40 23 48 0 5 -2.53 - 1 0 0 46 11 27 16 51 12.2 16 190 -2 44 12 28 48 24 44 44 7 11 48 31 23 -2.53 0 0 0 46 41 24 16 51 14.4 15 191 -3 44 40 29 48 57 24 44 35 8 49 4 12 -2.54 1 0 0 47 12 40 16 51 16.5 15 192 -4 45 9 40 49 31 38 45 4 14 49 38 37 -2.54 2 0 0 47 45 16 16 51 18.5 14 193 -5 45 40 2 50 7 29 45 34 31 50 14 40 -2.54 3 0 0 48 19 14 16 51 20.5 13 193 -5 46 11 36 50 45 3 46 5 59 50 52 26 -2.54 4 0 0 48 54 38 16 51 22.4 12 194 -6 46 44 23 51 24 23 46 38 40 51 32 1 -2.55 5 0 0 49 31 29 16 51 24.2 12 195 -7 47 18 24 52 5 37 47 12 35 52 13 30 -2.55 6 0 0 50 9 50 16 51 25.9 11 196 -8 47 53 40 52 48 51 47 47 44 52 57 2 -2.56 7 0 0 50 49 45 16 51 27.5 10 197 -9 48 30 14 53 34 14 48 24 10 53 42 46 -2.57 8 0 0 51 31 18 16 51 29.0 9 198 -9 49 8 6 54 21 57 49 1 54 54 30 53 -2.57 9 0 0 52 14 34 16 51 30.4 8 199 -10 49 47 19 55 12 13 49 40 58 55 21 37 -2.58 10 0 0 52 59 38 16 51 31.7 7 199 -11 50 27 56 56 5 22 50 21 25 56 15 20 -2.60 11 0 0 53 46 37 16 51 32.8 7 200 -12 51 9 57 57 1 46 51 3 16 57 12 24 -2.62 12 0 0 54 35 38 16 51 33.8 6 201 -12 51 53 28 58 1 59 51 46 35 58 13 28 -2.64 13 0 0 55 26 53 16 51 34.7 5 202 -13 52 38 31 59 6 47 52 31 25 59 19 21 -2.68 14 0 0 56 20 33 16 51 35.4 4 203 -14 53 25 10 .. .. .. 53 17 49 .. .. .. -2.74 15 0 0 57 16 56 16 51 35.9 2 204 -14 54 13 29 .. .. .. 54 5 53 .. .. .. -2.87 16 0 1 58 16 24 16 51 36.2 1 204 -15 55 3 36 .. .. .. 54 55 42 .. .. .. -3.21 17 0 1 59 19 25 16 51 36.4 0 205 -16 55 55 37 .. .. .. 55 47 23 .. .. .. -9.08 0 0 0 .. .. .... .. .. .. .. .. .. 56 49 40 .. .. .. 56 41 4 .. .. .. .... 0 0 0 .. .. .... .. .. .. .. .. .. 57 45 58 .. .. .. 57 36 55 .. .. .. .... 0 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 58 35 10 .. .. .. .... Uncertainty in time = +/- 0 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: UCAC4 313-242800 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 05 43.9500 DE: -27 30 53.422 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 05 43.9500 DE: -27 30 53.422 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (196) Philomela asteroid class: approx. diameter [km]: 140 approx. diameter ["]: 0.056 distance from Earth [AU]: 3.42660 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#133 date of fit: 2023 Oct 11 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): 0.005", 0.001", 90.065° remarks: * orbital elements for (196)Philomela : Mean anomaly = 24.7369293360 deg Arg. of pericenter = 203.5245267889 deg Long. of node = 72.2995652283 deg Inclination = 7.2629930736 deg Eccentricity = 0.0146640978 Semimajor axis = 3.1125915983 AU Perihelion dist = 3.0669482505 AU Mag: H = 6.74, G = 0.15 Epoch of elements : MJD 60254.70166667 TDT (2023 Nov 06.7017) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1332023Oct11,4.47,2023,11,6,16.839284,-0.118926,0.919739,17.532105,2.257019,0.005192,0.000354,-0.000001,0.000000 -11.4356,-27.4801,-76.68,-16.04,False UCAC4 313-242800,19.09554171,-27.5148393,0.00,11.57,0.00,0.0,0,,19.11997342,-27.4801154,1.40,0.00,0,0,0 196,Philomela,12.62,140.100,3.4266,0,0,3.381,5.79,,8.0,0 0,24.6110,2023,11,6,203.5245,72.2996,7.2630,0.01466,3.11259,3.06695,6.63,5.0,0.15 1.023,0.0050,0.0012,90,0.0051,Known errors,-1.00,0,-1,-1 20231106_242800,60232.88 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 21:02 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org