IOTA/IOTA-ES occultation update for (2239) Paracelsus / TYC 7933-02447-1 event on 2023 Jul 16, 15:47 UT Visible from Australia Summary ------- On 2023 Jul 16 UT, the 38.3 km diameter asteroid (2239) Paracelsus will occult a 10.3 mag star in the constellation Sagittarius for observers along a path across Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 5.38 mag to 15.66 mag (the magnitude of the asteroid) for at most 3.040 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 Jul 16, 15:39 - 2023 Jul 16, 15:56 * geocentric midpoint of event [JD]: 2460142.15832075 * magnitude of target star: 10.29 * magnitude drop [mag]: 5.38 * estimated maximum duration [s]: 3.040 * Moon: 2 % sunlit, 165° distance * Sun: 164° distance * rough path description: Australia The occultation path -------------------- * approximate projected width [km]: 41 * 1 sigma uncertainty interval [path widths]: +/- 0.14 * 1 sigma uncertainty interval [seconds]: +/- 3.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.026, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.027", 0.003", 81°) * approx speed of asteroid's shadow [km/s]: 12.5927 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7933-02447-1 by 2239 Paracelsus on 2023 Jul 16 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 39 0 0 7 47 37 15 55 57.4 0 128 -3 8 1 41 7 33 35 8 5 34 7 29 43 .... 40 0 0 7 1 12 15 55 57.2 2 128 -4 7 15 12 6 47 14 7 19 4 6 43 23 -0.12 41 0 0 6 15 17 15 55 56.8 3 128 -6 6 29 13 6 1 22 6 33 3 5 57 33 -0.23 42 0 0 5 29 53 15 55 56.0 4 128 -7 5 43 45 5 16 2 5 47 34 5 12 14 -0.27 43 0 0 4 45 1 15 55 55.1 5 129 -8 4 58 49 4 31 14 5 2 37 4 27 27 -0.29 44 0 0 4 0 43 15 55 53.8 7 129 -9 4 14 27 3 47 0 4 18 14 3 43 14 -0.31 45 0 0 3 17 0 15 55 52.4 8 129 -10 3 30 39 3 3 21 3 34 25 2 59 36 -0.32 46 0 0 2 33 52 15 55 50.7 9 129 -12 2 47 28 2 20 18 2 51 13 2 16 34 -0.32 47 0 0 1 51 22 15 55 48.8 10 129 -13 2 4 54 1 37 52 2 8 37 1 34 10 -0.33 48 0 0 1 9 30 15 55 46.6 12 129 -14 1 22 57 0 56 4 1 26 40 0 52 23 -0.33 49 0 0 0 28 16 15 55 44.3 13 129 -15 0 41 40 0 14 55 0 45 21 0 11 15 -0.34 50 0 0 - 0 12 18 15 55 41.7 14 129 -16 0 1 1 - 0 25 35 0 4 41 - 0 29 14 -0.34 51 0 0 - 0 52 11 15 55 38.9 15 129 -17 - 0 38 57 - 1 5 25 - 0 35 18 - 1 9 3 -0.34 52 0 0 - 1 31 24 15 55 35.9 16 129 -19 - 1 18 14 - 1 44 33 - 1 14 36 - 1 48 10 -0.34 53 0 0 - 2 9 56 15 55 32.7 17 129 -20 - 1 56 50 - 2 23 1 - 1 53 13 - 2 26 37 -0.35 54 0 0 - 2 47 46 15 55 29.3 19 129 -21 - 2 34 43 - 3 0 47 - 2 31 8 - 3 4 21 -0.35 55 0 0 - 3 24 53 15 55 25.8 20 129 -22 - 3 11 55 - 3 37 50 - 3 8 21 - 3 41 23 -0.35 56 0 0 - 4 1 18 15 55 22.0 21 129 -23 - 3 48 24 - 4 14 11 - 3 44 51 - 4 17 43 -0.35 57 0 0 - 4 37 0 15 55 18.1 22 129 -24 - 4 24 10 - 4 49 48 - 4 20 38 - 4 53 20 -0.35 58 0 0 - 5 11 58 15 55 14.0 23 129 -25 - 4 59 12 - 5 24 43 - 4 55 41 - 5 28 13 -0.35 59 0 0 - 5 46 13 15 55 9.7 24 129 -27 - 5 33 31 - 5 58 54 - 5 30 1 - 6 2 23 -0.35 60 0 0 - 6 19 44 15 55 5.3 25 129 -28 - 6 7 6 - 6 32 21 - 6 3 37 - 6 35 50 -0.35 61 0 0 - 6 52 32 15 55 0.8 26 129 -29 - 6 39 58 - 7 5 5 - 6 36 30 - 7 8 32 -0.35 62 0 0 - 7 24 36 15 54 56.0 28 129 -30 - 7 12 5 - 7 37 5 - 7 8 39 - 7 40 31 -0.35 63 0 0 - 7 55 56 15 54 51.2 29 129 -31 - 7 43 29 - 8 8 22 - 7 40 3 - 8 11 47 -0.35 64 0 0 - 8 26 32 15 54 46.2 30 129 -32 - 8 14 9 - 8 38 54 - 8 10 44 - 8 42 18 -0.35 65 0 0 - 8 56 24 15 54 41.0 31 129 -33 - 8 44 5 - 9 8 43 - 8 40 41 - 9 12 6 -0.35 66 0 0 - 9 25 33 15 54 35.8 32 129 -34 - 9 13 16 - 9 37 48 - 9 9 54 - 9 41 10 -0.35 67 0 0 - 9 53 57 15 54 30.4 33 129 -35 - 9 41 45 -10 6 9 - 9 38 23 -10 9 30 -0.35 68 0 0 -10 21 38 15 54 24.9 34 129 -36 -10 9 29 -10 33 47 -10 6 8 -10 37 7 -0.35 69 0 0 -10 48 36 15 54 19.3 35 129 -37 -10 36 30 -11 0 41 -10 33 10 -11 4 0 -0.35 70 0 0 -11 14 50 15 54 13.6 36 129 -38 -11 2 47 -11 26 52 -10 59 28 -11 30 10 -0.35 71 0 0 -11 40 21 15 54 7.8 37 129 -39 -11 28 21 -11 52 19 -11 25 3 -11 55 37 -0.35 72 0 0 -12 5 8 15 54 1.8 38 129 -40 -11 53 12 -12 17 4 -11 49 55 -12 20 21 -0.35 73 0 0 -12 29 13 15 53 55.8 39 129 -41 -12 17 20 -12 41 6 -12 14 3 -12 44 22 -0.35 74 0 0 -12 52 36 15 53 49.7 40 129 -42 -12 40 45 -13 4 25 -12 37 29 -13 7 40 -0.35 75 0 0 -13 15 15 15 53 43.5 41 129 -44 -13 3 28 -13 27 2 -13 0 13 -13 30 17 -0.35 76 0 0 -13 37 13 15 53 37.2 42 129 -45 -13 25 28 -13 48 57 -13 22 14 -13 52 11 -0.35 77 0 0 -13 58 28 15 53 30.9 43 129 -46 -13 46 46 -14 10 10 -13 43 33 -14 13 23 -0.35 78 0 0 -14 19 2 15 53 24.4 44 129 -47 -14 7 22 -14 30 41 -14 4 10 -14 33 53 -0.35 79 0 0 -14 38 54 15 53 17.9 45 129 -48 -14 27 17 -14 50 30 -14 24 5 -14 53 42 -0.35 80 0 0 -14 58 5 15 53 11.3 46 129 -49 -14 46 30 -15 9 39 -14 43 19 -15 12 50 -0.35 81 0 0 -15 16 35 15 53 4.6 47 129 -50 -15 5 2 -15 28 6 -15 1 52 -15 31 16 -0.35 82 0 0 -15 34 23 15 52 57.9 48 129 -50 -15 22 53 -15 45 53 -15 19 43 -15 49 2 -0.35 83 0 0 -15 51 31 15 52 51.1 48 130 -51 -15 40 4 -16 2 58 -15 36 54 -16 6 7 -0.35 84 0 0 -16 7 59 15 52 44.2 49 130 -52 -15 56 33 -16 19 24 -15 53 25 -16 22 32 -0.35 85 0 0 -16 23 47 15 52 37.3 50 130 -53 -16 12 23 -16 35 10 -16 9 15 -16 38 17 -0.35 86 0 0 -16 38 54 15 52 30.3 51 130 -54 -16 27 33 -16 50 15 -16 24 25 -16 53 22 -0.35 87 0 0 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22 -12 17 24 -12 47 37 -0.35 147 0 0 -12 8 46 15 44 27.3 58 213 -67 -11 56 51 -12 20 39 -11 53 35 -12 23 55 -0.35 148 0 0 -11 44 18 15 44 19.1 57 214 -66 -11 32 21 -11 56 14 -11 29 4 -11 59 31 -0.35 149 0 0 -11 19 9 15 44 11.1 56 215 -65 -11 7 9 -11 31 8 -11 3 51 -11 34 25 -0.35 150 0 0 -10 53 18 15 44 3.0 55 215 -64 -10 41 15 -11 5 20 -10 37 55 -11 8 38 -0.35 151 0 0 -10 26 44 15 43 55.0 54 216 -63 -10 14 38 -10 38 50 -10 11 18 -10 42 9 -0.36 152 0 0 - 9 59 29 15 43 47.0 53 216 -62 - 9 47 19 -10 11 37 - 9 43 59 -10 14 58 -0.36 153 0 0 - 9 31 31 15 43 39.1 52 217 -61 - 9 19 19 - 9 43 43 - 9 15 57 - 9 47 4 -0.36 154 0 0 - 9 2 51 15 43 31.3 52 217 -60 - 8 50 35 - 9 15 6 - 8 47 13 - 9 18 28 -0.36 155 0 0 - 8 33 29 15 43 23.4 51 218 -59 - 8 21 10 - 8 45 48 - 8 17 46 - 8 49 11 -0.36 156 0 0 - 8 3 24 15 43 15.7 50 218 -58 - 7 51 1 - 8 15 46 - 7 47 37 - 8 19 10 -0.36 157 0 0 - 7 32 37 15 43 8.0 49 219 -57 - 7 20 11 - 7 45 3 - 7 16 45 - 7 48 28 -0.36 158 0 0 - 7 1 8 15 43 0.4 48 219 -56 - 6 48 38 - 7 13 37 - 6 45 11 - 7 17 3 -0.36 159 0 0 - 6 28 57 15 42 52.9 47 219 -55 - 6 16 23 - 6 41 29 - 6 12 55 - 6 44 56 -0.36 160 0 0 - 5 56 3 15 42 45.4 46 220 -54 - 5 43 26 - 6 8 39 - 5 39 57 - 6 12 7 -0.36 161 0 0 - 5 22 28 15 42 38.0 44 220 -52 - 5 9 46 - 5 35 8 - 5 6 17 - 5 38 36 -0.36 162 0 0 - 4 48 10 15 42 30.8 43 220 -51 - 4 35 25 - 5 0 54 - 4 31 55 - 5 4 24 -0.36 163 0 0 - 4 13 11 15 42 23.6 42 220 -50 - 4 0 22 - 4 25 59 - 3 56 51 - 4 29 30 -0.36 164 0 0 - 3 37 31 15 42 16.5 41 221 -49 - 3 24 38 - 3 50 22 - 3 21 5 - 3 53 54 -0.36 165 0 0 - 3 1 10 15 42 9.5 40 221 -48 - 2 48 13 - 3 14 5 - 2 44 39 - 3 17 38 -0.36 166 0 0 - 2 24 8 15 42 2.7 39 221 -47 - 2 11 7 - 2 37 7 - 2 7 32 - 2 40 41 -0.36 167 0 0 - 1 46 26 15 41 55.9 38 221 -46 - 1 33 21 - 1 59 29 - 1 29 45 - 2 3 4 -0.36 168 0 0 - 1 8 4 15 41 49.3 37 222 -44 - 0 54 55 - 1 21 11 - 0 51 18 - 1 24 47 -0.36 169 0 0 - 0 29 3 15 41 42.9 36 222 -43 - 0 15 50 - 0 42 14 - 0 12 12 - 0 45 51 -0.36 170 0 0 0 10 37 15 41 36.5 35 222 -42 0 23 53 - 0 2 38 0 27 33 - 0 6 16 -0.36 171 0 0 0 50 55 15 41 30.4 33 222 -41 1 4 15 0 37 36 1 7 56 0 33 56 -0.37 172 0 0 1 31 50 15 41 24.3 32 222 -40 1 45 14 1 18 27 1 48 56 1 14 46 -0.37 173 0 0 2 13 22 15 41 18.5 31 223 -39 2 26 50 1 59 55 2 30 32 1 56 13 -0.37 174 0 0 2 55 29 15 41 12.8 30 223 -37 3 9 1 2 41 58 3 12 45 2 38 15 -0.37 175 0 0 3 38 11 15 41 7.2 29 223 -36 3 51 47 3 24 36 3 55 32 3 20 52 -0.37 176 0 0 4 21 27 15 41 1.9 28 223 -35 4 35 7 4 7 48 4 38 53 4 4 3 -0.37 177 0 0 5 5 15 15 40 56.7 26 223 -34 5 18 59 4 51 32 5 22 46 4 47 46 -0.37 178 0 0 5 49 35 15 40 51.8 25 223 -33 6 3 23 5 35 49 6 7 11 5 32 1 -0.37 179 0 0 6 34 25 15 40 47.0 24 224 -31 6 48 17 6 20 35 6 52 6 6 16 47 -0.37 180 0 0 7 19 45 15 40 42.4 23 224 -30 7 33 40 7 5 51 7 37 30 7 2 2 -0.37 -179 0 0 8 5 32 15 40 38.1 22 224 -29 8 19 31 7 51 34 8 23 22 7 47 44 -0.37 -178 0 0 8 51 45 15 40 34.0 20 224 -28 9 5 48 8 37 44 9 9 40 8 33 53 -0.37 -177 0 0 9 38 23 15 40 30.1 19 224 -26 9 52 29 9 24 18 9 56 23 9 20 26 -0.37 -176 0 0 10 25 24 15 40 26.4 18 225 -25 10 39 34 10 11 16 10 43 28 10 7 23 -0.37 -175 0 0 11 12 47 15 40 22.9 17 225 -24 11 27 0 10 58 35 11 30 55 10 54 41 -0.37 -174 0 0 12 0 29 15 40 19.7 15 225 -23 12 14 45 11 46 14 12 18 41 11 42 19 -0.37 -173 0 0 12 48 29 15 40 16.8 14 225 -22 13 2 48 12 34 11 13 6 45 12 30 15 -0.37 -172 0 0 13 36 45 15 40 14.0 13 226 -20 13 51 7 13 22 24 13 55 5 13 18 28 -0.37 -171 0 0 14 25 15 15 40 11.6 12 226 -19 14 39 40 14 10 51 14 43 39 14 6 54 -0.37 -170 0 0 15 13 57 15 40 9.3 10 226 -18 15 28 25 14 59 31 15 32 24 14 55 33 -0.37 -169 0 0 16 2 49 15 40 7.4 9 226 -17 16 17 20 15 48 20 16 21 19 15 44 22 -0.37 -168 0 0 16 51 49 15 40 5.6 8 227 -15 17 6 22 16 37 18 17 10 22 16 33 18 -0.37 -167 0 0 17 40 55 15 40 4.2 7 227 -14 17 55 30 17 26 21 17 59 31 17 22 21 -0.37 -166 0 0 18 30 4 15 40 3.0 5 227 -13 18 44 41 18 15 28 18 48 43 18 11 28 -0.38 -165 0 0 19 19 14 15 40 2.0 4 228 -12 19 33 53 19 4 37 19 37 55 19 0 36 -0.38 -164 0 0 20 8 24 15 40 1.3 3 228 -11 20 23 5 19 53 45 20 27 7 19 49 44 -0.38 -163 0 0 20 57 31 15 40 0.9 2 228 -9 21 12 13 20 42 50 21 16 16 20 38 49 -0.38 -162 0 0 21 46 32 15 40 0.7 0 229 -8 22 1 15 21 31 50 22 5 18 21 27 48 -0.42 Uncertainty in time = +/- 3 secs Prediction of 2023 May 29.0 Data for the target star ------------------------ * name: TYC 7933-02447-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 40 54.8319 DE: -37 40 08.297 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 40 54.8319 DE: -37 40 08.300 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2239) Paracelsus asteroid class: approx. diameter [km]: 38 approx. diameter ["]: 0.024 distance from Earth [AU]: 2.17820 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#66 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): 0.027", 0.003", 80.984° remarks: * orbital elements for (2239)Paracelsus : Mean anomaly = 280.4104948689 deg Arg. of pericenter = 3.2445389408 deg Long. of node = 20.0633121203 deg Inclination = 10.9398811475 deg Eccentricity = 0.1065653682 Semimajor axis = 3.1923952300 AU Perihelion dist = 2.8521964569 AU Mag: H = 11.04, G = 0.15 Epoch of elements : MJD 60141.65812500 TDT (2023 Jul 16.6581) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#662023Apr24,3.04,2023,7,16,15.799698,-0.051066,0.323618,-7.020529,-1.109654,0.000006,0.001586,0.000001,0.000000 124.4059,-37.6140,-55.46,21.33,False TYC 7933-02447-1,19.68189775,-37.6689715,0.00,10.29,0.00,0.0,0,,19.70843598,-37.6140166,5.38,0.00,0,0,0 2239,Paracelsus,15.66,38.3,2.1782,0,0,-2.385,-4.48,,1.8,0 0,280.2968,2023,7,16,3.2445,20.0633,10.9399,0.10657,3.19240,2.85220,11.04,5.0,0.15 1.138,0.0267,0.0033,81,0.0033,Known errors,-1.00,-1,-1,-1 20230716_2447-1,60092.98 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 May 28, 23:36 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org