IOTA/IOTA-ES occultation update for (109) Felicitas / TYC 7398-01735-1 event on 2023 May 14, 06:14 UT Visible from Africa Summary ------- On 2023 May 14 UT, the 87.4 km diameter asteroid (109) Felicitas will occult a 9.6 mag star in the constellation Sagittarius for observers along a path across Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.92 mag to 14.51 mag (the magnitude of the asteroid) for at most 10.840 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 May 14, 06:01 - 2023 May 14, 06:27 * geocentric midpoint of event [JD]: 2460078.75997067 * magnitude of target star: 9.60 * magnitude drop [mag]: 4.92 * estimated maximum duration [s]: 10.840 * Moon: 31 % sunlit, 69° distance * Sun: 136° distance * rough path description: Africa Additional comments ------------------- duplicated source flag The occultation path -------------------- * approximate projected width [km]: 88 * 1 sigma uncertainty interval [path widths]: +/- 0.12 * 1 sigma uncertainty interval [seconds]: +/- 2.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.004", 84°) * approx speed of asteroid's shadow [km/s]: 8.0636 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7398-01735-1 by 109 Felicitas on 2023 May 14 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 -152 0 0 -17 26 4 6 27 23.8 1 125 -39 -16 56 44 -17 55 20 -16 49 27 -18 2 36 .... -151 0 0 -18 5 41 6 27 23.4 2 125 -40 -17 36 33 -18 34 47 -17 29 18 -18 42 0 -0.04 -150 0 0 -18 44 25 6 27 22.7 3 124 -41 -18 15 27 -19 13 20 -18 8 15 -19 20 30 -0.09 -149 0 0 -19 22 15 6 27 21.7 4 124 -42 -18 53 28 -19 50 59 -18 46 19 -19 58 7 -0.12 -148 0 0 -19 59 12 6 27 20.3 5 124 -43 -19 30 35 -20 27 45 -19 23 29 -20 34 50 -0.13 -147 0 0 -20 35 16 6 27 18.7 6 123 -44 -20 6 50 -21 3 39 -19 59 45 -21 10 41 -0.14 -146 0 0 -21 10 27 6 27 16.8 8 123 -45 -20 42 11 -21 38 40 -20 35 10 -21 45 39 -0.14 -145 0 0 -21 44 46 6 27 14.7 9 123 -46 -21 16 40 -22 12 48 -21 9 41 -22 19 46 -0.15 -144 0 0 -22 18 13 6 27 12.3 10 122 -47 -21 50 17 -22 46 6 -21 43 21 -22 53 1 -0.15 -143 0 0 -22 50 48 6 27 9.6 11 122 -48 -22 23 3 -23 18 31 -22 16 8 -23 25 24 -0.15 -142 0 0 -23 22 33 6 27 6.7 12 122 -48 -22 54 57 -23 50 7 -22 48 5 -23 56 57 -0.15 -141 0 0 -23 53 27 6 27 3.6 13 121 -49 -23 26 0 -24 20 52 -23 19 11 -24 27 40 -0.15 -140 0 0 -24 23 32 6 27 0.3 14 121 -50 -23 56 14 -24 50 47 -23 49 27 -24 57 32 -0.15 -139 0 0 -24 52 47 6 26 56.7 15 120 -51 -24 25 38 -25 19 53 -24 18 53 -25 26 36 -0.15 -138 0 0 -25 21 13 6 26 53.0 16 120 -52 -24 54 13 -25 48 10 -24 47 30 -25 54 51 -0.16 -137 0 0 -25 48 50 6 26 49.0 17 120 -53 -25 21 59 -26 15 39 -25 15 19 -26 22 18 -0.16 -136 0 0 -26 15 40 6 26 44.9 18 119 -54 -25 48 57 -26 42 21 -25 42 19 -26 48 58 -0.16 -135 0 0 -26 41 43 6 26 40.6 19 119 -55 -26 15 8 -27 8 15 -26 8 32 -27 14 50 -0.16 -134 0 0 -27 6 59 6 26 36.0 20 118 -55 -26 40 32 -27 33 23 -26 33 58 -27 39 56 -0.16 -133 0 0 -27 31 29 6 26 31.4 21 118 -56 -27 5 10 -27 57 45 -26 58 38 -28 4 17 -0.16 -132 0 0 -27 55 13 6 26 26.5 22 117 -57 -27 29 2 -28 21 22 -27 22 31 -28 27 51 -0.16 -131 0 0 -28 18 12 6 26 21.5 23 117 -58 -27 52 9 -28 44 14 -27 45 40 -28 50 42 -0.16 -130 0 0 -28 40 27 6 26 16.4 24 117 -59 -28 14 31 -29 6 22 -28 8 4 -29 12 48 -0.16 -129 0 0 -29 1 58 6 26 11.1 25 116 -59 -28 36 9 -29 27 46 -28 29 43 -29 34 10 -0.16 -128 0 0 -29 22 46 6 26 5.6 25 116 -60 -28 57 3 -29 48 27 -28 50 40 -29 54 49 -0.16 -127 0 0 -29 42 51 6 26 0.0 26 115 -61 -29 17 14 -30 8 25 -29 10 52 -30 14 46 -0.16 -126 0 0 -30 2 13 6 25 54.3 27 115 -62 -29 36 43 -30 27 41 -29 30 23 -30 34 1 -0.15 -125 0 0 -30 20 54 6 25 48.5 28 114 -62 -29 55 30 -30 46 16 -29 49 11 -30 52 34 -0.15 -124 0 0 -30 38 53 6 25 42.5 29 114 -63 -30 13 35 -31 4 9 -30 7 18 -31 10 26 -0.15 -123 0 0 -30 56 12 6 25 36.4 30 113 -64 -30 30 59 -31 21 22 -30 24 44 -31 27 37 -0.15 -122 0 0 -31 12 50 6 25 30.2 31 113 -64 -30 47 43 -31 37 55 -30 41 29 -31 44 8 -0.15 -121 0 0 -31 28 48 6 25 23.8 32 112 -65 -31 3 47 -31 53 48 -30 57 33 -32 0 0 -0.15 -120 0 0 -31 44 7 6 25 17.4 33 112 -66 -31 19 11 -32 9 2 -31 12 59 -32 15 13 -0.15 -119 0 0 -31 58 47 6 25 10.8 33 112 -66 -31 33 55 -32 23 37 -31 27 45 -32 29 46 -0.15 -118 0 0 -32 12 48 6 25 4.1 34 111 -67 -31 48 1 -32 37 33 -31 41 52 -32 43 42 -0.15 -117 0 0 -32 26 11 6 24 57.4 35 111 -67 -32 1 29 -32 50 52 -31 55 20 -32 56 59 -0.15 -116 0 0 -32 38 56 6 24 50.5 36 110 -68 -32 14 18 -33 3 33 -32 8 11 -33 9 39 -0.15 -115 0 0 -32 51 4 6 24 43.5 37 110 -68 -32 26 30 -33 15 37 -32 20 24 -33 21 42 -0.15 -114 0 0 -33 2 35 6 24 36.4 38 109 -69 -32 38 5 -33 27 4 -32 32 0 -33 33 8 -0.15 -113 0 0 -33 13 29 6 24 29.3 38 109 -70 -32 49 3 -33 37 54 -32 42 58 -33 43 58 -0.15 -112 0 0 -33 23 47 6 24 22.0 39 108 -70 -32 59 24 -33 48 8 -32 53 21 -33 54 11 -0.15 -111 0 0 -33 33 29 6 24 14.6 40 108 -70 -33 9 9 -33 57 47 -33 3 6 -34 3 49 -0.15 -110 0 0 -33 42 35 6 24 7.2 41 107 -71 -33 18 18 -34 6 50 -33 12 16 -34 12 51 -0.15 -109 0 0 -33 51 5 6 23 59.6 42 107 -71 -33 26 52 -34 15 17 -33 20 50 -34 21 18 -0.15 -108 0 0 -33 59 1 6 23 52.0 43 107 -72 -33 34 50 -34 23 10 -33 28 49 -34 29 10 -0.15 -107 0 0 -34 6 21 6 23 44.3 43 106 -72 -33 42 12 -34 30 28 -33 36 12 -34 36 27 -0.15 -106 0 0 -34 13 7 6 23 36.5 44 106 -72 -33 49 0 -34 37 11 -33 43 1 -34 43 10 -0.15 -105 0 0 -34 19 18 6 23 28.6 45 105 -73 -33 55 14 -34 43 20 -33 49 15 -34 49 18 -0.15 -104 0 0 -34 24 55 6 23 20.6 46 105 -73 -34 0 53 -34 48 55 -33 54 54 -34 54 53 -0.15 -103 0 0 -34 29 57 6 23 12.5 47 104 -73 -34 5 57 -34 53 56 -33 59 59 -34 59 53 -0.15 -102 0 0 -34 34 26 6 23 4.4 47 104 -73 -34 10 28 -34 58 23 -34 4 30 -35 4 20 -0.15 -101 0 0 -34 38 21 6 22 56.1 48 104 -73 -34 14 24 -35 2 17 -34 8 27 -35 8 14 -0.15 -100 0 0 -34 41 43 6 22 47.8 49 103 -74 -34 17 47 -35 5 38 -34 11 50 -35 11 34 -0.15 - 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1 0 0 10 8 23 6 3 3.2 30 222 4 10 41 1 9 35 50 10 49 8 9 27 46 -0.18 0 0 0 11 2 36 6 2 54.4 28 222 5 11 35 16 10 30 0 11 43 23 10 21 55 -0.18 1 0 0 11 56 44 6 2 45.9 27 222 6 12 29 25 11 24 7 12 37 33 11 16 2 -0.18 2 0 0 12 50 45 6 2 37.9 26 223 7 13 23 27 12 18 7 13 31 35 12 10 2 -0.18 3 0 0 13 44 37 6 2 30.2 24 223 9 14 17 20 13 11 59 14 25 28 13 3 53 -0.18 4 0 0 14 38 18 6 2 23.0 23 223 10 15 11 1 14 5 40 15 19 9 13 57 34 -0.18 5 0 0 15 31 45 6 2 16.1 22 223 11 16 4 27 14 59 7 16 12 35 14 51 1 -0.18 6 0 0 16 24 55 6 2 9.6 21 224 12 16 57 36 15 52 18 17 5 44 15 44 13 -0.18 7 0 0 17 17 46 6 2 3.6 19 224 13 17 50 25 16 45 11 17 58 33 16 37 6 -0.18 8 0 0 18 10 16 6 1 57.9 18 224 14 18 42 53 17 37 43 18 51 0 17 29 38 -0.18 9 0 0 19 2 22 6 1 52.7 17 225 15 19 34 57 18 29 52 19 43 4 18 21 48 -0.18 10 0 0 19 54 3 6 1 47.8 15 225 16 20 26 35 19 21 36 20 34 41 19 13 33 -0.18 11 0 0 20 45 16 6 1 43.4 14 225 18 21 17 45 20 12 52 21 25 49 20 4 50 -0.17 12 0 0 21 36 0 6 1 39.3 13 226 19 22 8 24 21 3 40 22 16 27 20 55 38 -0.17 13 0 0 22 26 11 6 1 35.6 12 226 20 22 58 31 21 53 55 23 6 33 21 45 55 -0.17 14 0 0 23 15 48 6 1 32.4 11 226 21 23 48 3 22 43 38 23 56 5 22 35 39 -0.17 15 0 0 24 4 50 6 1 29.5 9 227 22 24 37 0 23 32 45 24 45 0 23 24 48 -0.17 16 0 0 24 53 15 6 1 27.0 8 227 23 25 25 19 24 21 16 25 33 17 24 13 20 -0.17 17 0 0 25 41 1 6 1 24.8 7 228 24 26 12 59 25 9 8 26 20 55 25 1 13 -0.17 18 0 0 26 28 7 6 1 23.0 6 228 25 26 59 58 25 56 20 27 7 53 25 48 27 -0.16 19 0 0 27 14 31 6 1 21.6 5 229 26 27 46 15 26 42 52 27 54 8 26 35 0 -0.16 20 0 0 28 0 12 6 1 20.5 3 229 27 28 31 49 27 28 40 28 39 40 27 20 51 -0.15 21 0 0 28 45 10 6 1 19.7 2 230 28 29 16 38 28 13 45 29 24 28 28 5 58 -0.14 22 0 0 29 29 22 6 1 19.3 1 230 29 30 0 42 28 58 5 30 8 30 28 50 20 -0.10 23 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 29 41 40 .. .. .. 29 33 56 .... Uncertainty in time = +/- 3 secs Prediction of 2023 Apr 29.2 Data for the target star ------------------------ * name: TYC 7398-01735-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 28 18.1232 DE: -33 28 48.121 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 28 18.1233 DE: -33 28 48.121 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 9.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (109) Felicitas asteroid class: approx. diameter [km]: 87 approx. diameter ["]: 0.047 distance from Earth [AU]: 2.57860 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 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): 0.011", 0.004", 83.832° remarks: * orbital elements for (109)Felicitas : Mean anomaly = 221.2062004681 deg Arg. of pericenter = 57.5956122836 deg Long. of node = 2.7565154612 deg Inclination = 7.8455249139 deg Eccentricity = 0.3000838987 Semimajor axis = 2.6937588569 AU Perihelion dist = 1.8854051971 AU Mag: H = 9.03, G = 0.04 Epoch of elements : MJD 60078.25972222 TDT (2023 May 14.2597) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr24,10.84,2023,5,14,6.239296,-0.068586,0.125774,-3.996247,-2.178213,-0.003990,0.000533,0.000001,0.000000 -47.8637,-33.4649,85.50,18.58,False TYC 7398-01735-1,18.47170089,-33.4800337,0.00,9.60,0.00,0.0,0,,18.49745650,-33.4649154,4.92,0.00,0,0,0 109,Felicitas,14.51,87.4,2.5786,0,0,-1.089,-7.43,,5.6,0 0,221.1483,2023,5,14,57.5956,2.7565,7.8455,0.30008,2.69376,1.88541,9.08,5.0,0.15 1.124,0.0110,0.0043,84,0.0058,Known errors,-1.00,-1,-1,-1 20230514_1735-1,60063.18 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Apr 29, 04:25 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org