IOTA/IOTA-ES occultation update for (415) Palatia / UCAC4 406-063599 event on 2023 Apr 17, 10:20 UT Visible from Summary ------- On 2023 Apr 17 UT, the 84.2 km diameter asteroid (415) Palatia will occult a 12.3 mag star in the constellation Libra for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.70 mag to 14.88 mag (the magnitude of the asteroid) for at most 6.620 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: 2023 Apr 17, 10:16 - 2023 Apr 17, 10:23 * geocentric midpoint of event [JD]: 2460051.93066888 * magnitude of target star: 12.27 * magnitude drop [mag]: 2.70 * estimated maximum duration [s]: 6.620 * Moon: 10 % sunlit, 114° distance * Sun: 148° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 232 * 1 sigma uncertainty interval [path widths]: +/- 0.13 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.005", 97°) * approx speed of asteroid's shadow [km/s]: 12.7170 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 406-063599 by 415 Palatia on 2023 Apr 17 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 ' " Longitude Longitude Longitude Longitude .. .. .. 81 0 0 .. .. .... .. .. .. ... .. .. -124 33 25 ... .. .. -126 16 41 .... -118 21 43 80 0 0 10 23 5.6 1 185 2 -112 1 4 -124 22 7 -110 15 21 -125 55 22 .... -118 30 33 79 0 0 10 23 5.0 2 185 2 -112 45 28 -123 59 1 -111 10 8 -125 24 10 1.91 -118 24 32 78 0 0 10 23 4.0 3 185 1 -113 8 7 -123 26 54 -111 41 1 -124 45 24 -2.16 -118 7 0 77 0 0 10 23 2.5 4 186 0 -113 14 6 -122 47 39 -111 53 42 -124 0 37 -2.28 -117 40 16 76 0 0 10 23 0.6 5 186 -1 -113 7 3 -122 2 39 -111 52 11 -123 10 55 -2.36 -117 6 1 75 0 0 10 22 58.2 6 187 -1 -112 49 23 -121 12 51 -111 39 10 -122 17 6 -2.41 -116 25 27 74 0 0 10 22 55.4 7 187 -2 -112 22 59 -120 18 56 -111 16 43 -121 19 44 -2.44 -115 39 30 73 0 0 10 22 52.2 8 188 -3 -111 49 11 -119 21 26 -110 46 17 -120 19 15 -2.47 -114 48 47 72 0 0 10 22 48.5 9 189 -3 -111 9 0 -118 20 42 -110 9 1 -119 15 54 -2.49 -113 53 52 71 0 0 10 22 44.4 10 190 -4 -110 23 11 -117 17 1 -109 25 43 -118 9 56 -2.51 -112 55 4 70 0 0 10 22 39.8 11 191 -4 -109 32 20 -116 10 35 -108 37 2 -117 1 31 -2.53 -111 52 43 69 0 0 10 22 34.8 12 192 -5 -108 36 53 -115 1 33 -107 43 28 -115 50 44 -2.54 -110 46 58 68 0 0 10 22 29.3 13 193 -5 -107 37 9 -113 49 59 -106 45 22 -114 37 38 -2.55 -109 38 1 67 0 0 10 22 23.3 13 194 -6 -106 33 22 -112 35 57 -105 43 0 -113 22 15 -2.56 -108 25 54 66 0 0 10 22 16.8 14 196 -6 -105 25 42 -111 19 26 -104 36 30 -112 4 35 -2.56 -107 10 38 65 0 0 10 22 9.9 15 197 -6 -104 14 12 -110 0 24 -103 26 1 -110 44 33 -2.57 -105 52 14 64 0 0 10 22 2.4 16 198 -7 -102 58 55 -108 38 49 -102 11 33 -109 22 7 -2.58 -104 30 37 63 0 0 10 21 54.4 17 200 -7 -101 39 48 -107 14 35 -100 53 5 -107 57 10 -2.58 -103 5 40 62 0 0 10 21 45.9 17 201 -7 -100 16 46 -105 47 35 - 99 30 31 -106 29 35 -2.59 -101 37 16 61 0 0 10 21 36.9 18 203 -7 - 98 49 40 -104 17 38 - 98 3 43 -104 59 12 -2.59 -100 5 10 60 0 0 10 21 27.3 19 204 -7 - 97 18 15 -102 44 33 - 96 32 25 -103 25 48 -2.59 - 98 29 8 59 0 0 10 21 17.2 19 206 -7 - 95 42 14 -101 8 5 - 94 56 20 -101 49 10 -2.60 - 96 48 48 58 0 0 10 21 6.5 20 208 -7 - 94 1 13 - 99 27 56 - 93 15 2 -100 9 0 -2.60 - 95 3 45 57 0 0 10 20 55.1 20 210 -7 - 92 14 41 - 97 43 43 - 91 27 57 - 98 24 56 -2.60 - 93 13 25 56 0 0 10 20 43.1 20 212 -6 - 90 21 57 - 95 54 59 - 89 34 23 - 96 36 31 -2.60 - 91 17 9 55 0 0 10 20 30.5 21 214 -6 - 88 22 7 - 94 1 11 - 87 33 22 - 94 43 13 -2.61 - 89 14 0 54 0 0 10 20 17.1 21 216 -5 - 86 14 0 - 92 1 34 - 85 23 36 - 92 44 22 -2.61 Latitude Latitude Latitude Latitude - 89 0 0 53 53 24 10 20 15.6 21 216 -5 55 18 34 52 34 51 55 42 33 52 14 53 -2.62 - 88 0 0 53 25 40 10 20 9.2 21 218 -5 54 49 21 52 8 16 55 12 52 51 48 34 -2.62 - 87 0 0 52 58 45 10 20 2.7 21 219 -4 54 21 4 51 42 27 54 44 9 51 23 1 -2.62 - 86 0 0 52 32 41 10 19 56.3 21 220 -4 53 53 42 51 17 25 54 16 23 50 58 13 -2.62 - 85 0 0 52 7 26 10 19 49.9 21 221 -4 53 27 15 50 53 8 53 49 33 50 34 10 -2.62 - 84 0 0 51 43 1 10 19 43.6 21 222 -3 53 1 41 50 29 38 53 23 39 50 10 53 -2.62 - 83 0 0 51 19 25 10 19 37.4 21 223 -3 52 37 1 50 6 53 52 58 39 49 48 20 -2.62 - 82 0 0 50 56 37 10 19 31.2 20 224 -2 52 13 14 49 44 55 52 34 34 49 26 33 -2.62 - 81 0 0 50 34 38 10 19 25.0 20 225 -2 51 50 19 49 23 42 52 11 21 49 5 32 -2.62 - 80 0 0 50 13 28 10 19 19.0 20 226 -1 51 28 15 49 3 15 51 49 2 48 45 15 -2.62 - 79 0 0 49 53 6 10 19 13.0 20 227 -1 51 7 4 48 43 34 51 27 35 48 25 43 -2.62 - 78 0 0 49 33 31 10 19 7.1 20 228 0 50 46 43 48 24 38 51 7 1 48 6 57 -2.62 - 77 0 0 49 14 45 10 19 1.3 19 229 0 50 27 13 48 6 28 50 47 18 47 48 56 -2.62 - 76 0 0 48 56 47 10 18 55.6 19 230 1 50 8 34 47 49 4 50 28 27 47 31 39 -2.62 - 75 0 0 48 39 36 10 18 50.0 19 231 1 49 50 46 47 32 25 50 10 26 47 15 9 -2.62 - 74 0 0 48 23 14 10 18 44.5 18 232 2 49 33 47 47 16 32 49 53 17 46 59 23 -2.63 - 73 0 0 48 7 38 10 18 39.1 18 233 2 49 17 39 47 1 25 49 36 59 46 44 22 -2.63 - 72 0 0 47 52 50 10 18 33.8 18 233 3 49 2 20 46 47 3 49 21 31 46 30 7 -2.63 - 71 0 0 47 38 50 10 18 28.6 17 234 3 48 47 51 46 33 28 49 6 53 46 16 37 -2.63 - 70 0 0 47 25 38 10 18 23.6 17 235 4 48 34 11 46 20 38 48 53 6 46 3 53 -2.63 - 69 0 0 47 13 12 10 18 18.7 16 236 5 48 21 22 46 8 33 48 40 9 45 51 53 -2.63 - 68 0 0 47 1 34 10 18 13.9 16 237 5 48 9 21 45 57 15 48 28 1 45 40 40 -2.64 - 67 0 0 46 50 44 10 18 9.3 16 238 6 47 58 10 45 46 42 48 16 44 45 30 11 -2.64 - 66 0 0 46 40 41 10 18 4.8 15 239 7 47 47 48 45 36 56 48 6 16 45 20 29 -2.64 - 65 0 0 46 31 26 10 18 0.5 15 240 7 47 38 15 45 27 55 47 56 39 45 11 31 -2.64 - 64 0 0 46 22 58 10 17 56.3 14 240 8 47 29 32 45 19 40 47 47 51 45 3 20 -2.65 - 63 0 0 46 15 17 10 17 52.2 14 241 9 47 21 38 45 12 11 47 39 53 44 55 54 -2.65 - 62 0 0 46 8 24 10 17 48.3 13 242 9 47 14 33 45 5 28 47 32 44 44 49 14 -2.66 - 61 0 0 46 2 19 10 17 44.6 12 243 10 47 8 17 44 59 32 47 26 25 44 43 19 -2.66 - 60 0 0 45 57 1 10 17 41.1 12 244 11 47 2 50 44 54 22 47 20 56 44 38 11 -2.66 - 59 0 0 45 52 31 10 17 37.7 11 244 11 46 58 13 44 49 58 47 16 17 44 33 48 -2.67 - 58 0 0 45 48 49 10 17 34.4 11 245 12 46 54 25 44 46 20 47 12 27 44 30 12 -2.67 - 57 0 0 45 45 54 10 17 31.4 10 246 13 46 51 27 44 43 29 47 9 27 44 27 22 -2.68 - 56 0 0 45 43 48 10 17 28.5 9 247 13 46 49 18 44 41 25 47 7 18 44 25 18 -2.69 - 55 0 0 45 42 29 10 17 25.8 9 247 14 46 47 58 44 40 7 47 5 58 44 24 0 -2.69 - 54 0 0 45 41 59 10 17 23.3 8 248 15 46 47 29 44 39 36 47 5 29 44 23 29 -2.70 - 53 0 0 45 42 17 10 17 21.0 8 249 15 46 47 49 44 39 51 47 5 50 44 23 44 -2.71 - 52 0 0 45 43 23 10 17 18.9 7 250 16 46 48 59 44 40 54 47 7 1 44 24 46 -2.72 - 51 0 0 45 45 17 10 17 17.0 6 250 17 46 50 59 44 42 44 47 9 2 44 26 35 -2.74 - 50 0 0 45 48 1 10 17 15.2 6 251 17 46 53 50 44 45 21 47 11 55 44 29 10 -2.75 - 49 0 0 45 51 33 10 17 13.7 5 252 18 46 57 30 44 48 46 47 15 38 44 32 33 -2.78 - 48 0 0 45 55 54 10 17 12.3 4 253 19 47 2 2 44 52 58 47 20 13 44 36 43 -2.80 - 47 0 0 46 1 4 10 17 11.2 4 253 20 47 7 24 44 57 58 47 25 38 44 41 41 -2.84 - 46 0 0 46 7 3 10 17 10.3 3 254 20 47 13 37 45 3 46 47 31 55 44 47 25 -2.89 - 45 0 0 46 13 52 10 17 9.5 2 255 21 47 20 41 45 10 21 47 39 4 44 53 58 -2.98 - 44 0 0 46 21 31 10 17 9.0 1 255 22 47 28 36 45 17 45 47 47 5 45 1 17 -3.16 - 43 0 0 46 29 59 10 17 8.7 1 256 22 47 37 24 45 25 56 47 55 57 45 9 25 -3.68 - 42 0 0 46 39 17 10 17 8.6 0 257 23 .. .. .. 45 34 57 .. .. .. 45 18 21 -54.46 Uncertainty in time = +/- 2 secs Prediction of 2023 Mar 1.1 Data for the target star ------------------------ * name: UCAC4 406-063599 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 15 47 33.9784 DE: -08 56 30.012 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 15 47 33.9792 DE: -08 56 30.011 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 12.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (415) Palatia asteroid class: approx. diameter [km]: 84 approx. diameter ["]: 0.043 distance from Earth [AU]: 2.67000 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#78 date of fit: 2023 Feb 07 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): 0.012", 0.005", 96.867° remarks: * orbital elements for (415)Palatia : Mean anomaly = 150.2285052153 deg Arg. of pericenter = 299.1111802992 deg Long. of node = 126.3213449424 deg Inclination = 8.2179422564 deg Eccentricity = 0.3003267872 Semimajor axis = 2.7924253596 AU Perihelion dist = 1.9537852228 AU Mag: H = 9.39, G = 0.15 Epoch of elements : MJD 60051.43069445 TDT (2023 Apr 17.4307) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#782023Feb07,6.62,2023,4,17,10.336053,0.342349,0.866577,-6.667146,2.659025,-0.003080,-0.000278,0.000001,0.000000 -123.1237,-9.0150,24.87,10.46,False UCAC4 406-063599,15.79277178,-8.9416701,0.00,12.27,0.00,0.0,0,,15.81392630,-9.0150360,0.93,0.00,1,0,1 415,Palatia,14.88,84.2,2.6700,0,0,-1.482,8.76,,4.4,0 0,150.1375,2023,4,17,299.1112,126.3213,8.2179,0.30033,2.79243,1.95379,9.40,5.0,0.15 1.133,0.0123,0.0050,97,0.0058,Known errors,-1.00,-1,-1,-1 20230417_063599,60004.05 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Mar 01, 01:18 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org