IOTA/IOTA-ES occultation update for (3248) Farinella / UCAC4 270-105066 event on 2023 May 04, 03:05 UT Visible from Africa Summary ------- On 2023 May 04 UT, the 38.6 km diameter asteroid (3248) Farinella will occult a 12.3 mag star in the constellation Scorpius 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 3.65 mag to 15.90 mag (the magnitude of the asteroid) for at most 5.330 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: 69 * date and approx. time of event: 2023 May 04, 02:54 - 2023 May 04, 03:15 * geocentric midpoint of event [JD]: 2460068.62846341 * magnitude of target star: 12.29 * magnitude drop [mag]: 3.65 * estimated maximum duration [s]: 5.330 * Moon: 97 % sunlit, 61° distance * Sun: 138° distance * rough path description: Africa The occultation path -------------------- * approximate projected width [km]: 54 * 1 sigma uncertainty interval [path widths]: +/- 0.86 * 1 sigma uncertainty interval [seconds]: +/- 3.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.026, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.026", 0.007", 96°) * approx speed of asteroid's shadow [km/s]: 7.2454 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 270-105066 by 3248 Farinella on 2023 May 4 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 - 98 0 0 0 11 27 3 15 27.0 0 126 -40 0 30 4 - 0 7 3 .. .. .. - 0 38 30 .... - 97 0 0 - 0 30 57 3 15 26.5 2 126 -41 - 0 12 38 - 0 49 9 0 19 5 - 1 20 6 -0.54 - 96 0 0 - 1 11 24 3 15 25.5 3 126 -42 - 0 53 23 - 1 29 19 - 0 22 9 - 1 59 48 -0.75 - 95 0 0 - 1 49 58 3 15 24.0 4 126 -43 - 1 32 12 - 2 7 38 - 1 1 27 - 2 37 40 -0.84 - 94 0 0 - 2 26 43 3 15 22.0 5 126 -44 - 2 9 12 - 2 44 8 - 1 38 53 - 3 13 46 -0.88 - 93 0 0 - 3 1 43 3 15 19.5 6 126 -45 - 2 44 25 - 3 18 53 - 2 14 31 - 3 48 9 -0.91 - 92 0 0 - 3 35 0 3 15 16.6 7 126 -47 - 3 17 56 - 3 51 58 - 2 48 25 - 4 20 52 -0.93 - 91 0 0 - 4 6 38 3 15 13.2 9 126 -48 - 3 49 47 - 4 23 25 - 3 20 37 - 4 51 58 -0.94 - 90 0 0 - 4 36 41 3 15 9.5 10 126 -49 - 4 20 1 - 4 53 16 - 3 51 11 - 5 21 31 -0.95 - 89 0 0 - 5 5 11 3 15 5.4 11 126 -50 - 4 48 41 - 5 21 35 - 4 20 10 - 5 49 32 -0.96 - 88 0 0 - 5 32 10 3 15 0.8 12 126 -51 - 5 15 50 - 5 48 24 - 4 47 37 - 6 16 5 -0.96 - 87 0 0 - 5 57 40 3 14 56.0 13 126 -52 - 5 41 30 - 6 13 46 - 5 13 33 - 6 41 11 -0.97 - 86 0 0 - 6 21 45 3 14 50.8 14 126 -53 - 6 5 44 - 6 37 42 - 5 38 2 - 7 4 52 -0.97 - 85 0 0 - 6 44 26 3 14 45.2 15 126 -54 - 6 28 33 - 7 0 15 - 6 1 6 - 7 27 12 -0.97 - 84 0 0 - 7 5 45 3 14 39.3 16 126 -55 - 6 50 0 - 7 21 26 - 6 22 46 - 7 48 10 -0.97 - 83 0 0 - 7 25 44 3 14 33.2 17 126 -56 - 7 10 5 - 7 41 18 - 6 43 4 - 8 7 50 -0.97 - 82 0 0 - 7 44 24 3 14 26.7 18 126 -57 - 7 28 52 - 7 59 51 - 7 2 2 - 8 26 13 -0.98 - 81 0 0 - 8 1 47 3 14 19.9 19 126 -58 - 7 46 21 - 8 17 9 - 7 19 42 - 8 43 20 -0.98 - 80 0 0 - 8 17 55 3 14 12.9 20 126 -59 - 8 2 35 - 8 33 11 - 7 36 6 - 8 59 13 -0.98 - 79 0 0 - 8 32 49 3 14 5.5 21 126 -60 - 8 17 34 - 8 47 59 - 7 51 14 - 9 13 53 -0.98 - 78 0 0 - 8 46 29 3 13 57.9 21 126 -61 - 8 31 19 - 9 1 35 - 8 5 8 - 9 27 20 -0.98 - 77 0 0 - 8 58 58 3 13 50.1 22 126 -62 - 8 43 52 - 9 13 59 - 8 17 48 - 9 39 37 -0.98 - 76 0 0 - 9 10 15 3 13 41.9 23 126 -63 - 8 55 13 - 9 25 13 - 8 29 17 - 9 50 44 -0.98 - 75 0 0 - 9 20 23 3 13 33.6 24 126 -64 - 9 5 25 - 9 35 17 - 8 39 34 -10 0 42 -0.98 - 74 0 0 - 9 29 21 3 13 24.9 25 126 -65 - 9 14 26 - 9 44 12 - 8 48 42 -10 9 32 -0.98 - 73 0 0 - 9 37 12 3 13 16.1 26 126 -66 - 9 22 20 - 9 52 0 - 8 56 40 -10 17 15 -0.98 - 72 0 0 - 9 43 54 3 13 7.0 27 126 -67 - 9 29 5 - 9 58 40 - 9 3 29 -10 23 51 -0.97 - 71 0 0 - 9 49 30 3 12 57.6 27 126 -68 - 9 34 43 -10 4 13 - 9 9 11 -10 29 21 -0.97 - 70 0 0 - 9 53 59 3 12 48.1 28 126 -69 - 9 39 14 -10 8 41 - 9 13 45 -10 33 45 -0.97 - 69 0 0 - 9 57 22 3 12 38.3 29 126 -70 - 9 42 38 -10 12 2 - 9 17 13 -10 37 4 -0.97 - 68 0 0 - 9 59 40 3 12 28.3 30 126 -70 - 9 44 57 -10 14 19 - 9 19 33 -10 39 18 -0.97 - 67 0 0 -10 0 52 3 12 18.0 31 126 -71 - 9 46 10 -10 15 30 - 9 20 48 -10 40 28 -0.97 - 66 0 0 -10 0 59 3 12 7.6 31 126 -72 - 9 46 18 -10 15 37 - 9 20 56 -10 40 34 -0.97 - 65 0 0 -10 0 1 3 11 56.9 32 127 -73 - 9 45 20 -10 14 39 - 9 19 59 -10 39 36 -0.97 - 64 0 0 - 9 57 59 3 11 46.0 33 127 -74 - 9 43 18 -10 12 36 - 9 17 56 -10 37 34 -0.97 - 63 0 0 - 9 54 52 3 11 34.9 34 127 -75 - 9 40 10 -10 9 30 - 9 14 48 -10 34 28 -0.97 - 62 0 0 - 9 50 40 3 11 23.5 34 127 -76 - 9 35 58 -10 5 19 - 9 10 34 -10 30 18 -0.97 - 61 0 0 - 9 45 24 3 11 12.0 35 128 -76 - 9 30 40 -10 0 3 - 9 5 15 -10 25 5 -0.97 - 60 0 0 - 9 39 2 3 11 0.2 36 128 -77 - 9 24 18 - 9 53 44 - 8 58 50 -10 18 47 -0.97 - 59 0 0 - 9 31 36 3 10 48.3 36 128 -78 - 9 16 50 - 9 46 19 - 8 51 19 -10 11 25 -0.97 - 58 0 0 - 9 23 5 3 10 36.1 37 129 -79 - 9 8 16 - 9 37 50 - 8 42 42 -10 2 59 -0.97 - 57 0 0 - 9 13 28 3 10 23.7 38 129 -79 - 8 58 37 - 9 28 15 - 8 32 59 - 9 53 29 -0.97 - 56 0 0 - 9 2 45 3 10 11.1 38 129 -80 - 8 47 51 - 9 17 34 - 8 22 8 - 9 42 53 -0.97 - 55 0 0 - 8 50 55 3 9 58.3 39 130 -80 - 8 35 58 - 9 5 48 - 8 10 10 - 9 31 11 -0.97 - 54 0 0 - 8 37 59 3 9 45.2 39 130 -81 - 8 22 59 - 8 52 55 - 7 57 5 - 9 18 24 -0.97 - 53 0 0 - 8 23 55 3 9 32.0 40 131 -81 - 8 8 51 - 8 38 54 - 7 42 51 - 9 4 30 -0.97 - 52 0 0 - 8 8 43 3 9 18.5 41 131 -81 - 7 53 35 - 8 23 46 - 7 27 28 - 8 49 28 -0.97 - 51 0 0 - 7 52 22 3 9 4.9 41 132 -81 - 7 37 10 - 8 7 30 - 7 10 55 - 8 33 19 -0.97 - 50 0 0 - 7 34 51 3 8 51.0 42 133 -81 - 7 19 34 - 7 50 4 - 6 53 11 - 8 16 1 -0.97 - 49 0 0 - 7 16 10 3 8 36.9 42 133 -81 - 7 0 48 - 7 31 28 - 6 34 15 - 7 57 34 -0.97 - 48 0 0 - 6 56 18 3 8 22.6 42 134 -81 - 6 40 50 - 7 11 41 - 6 14 8 - 7 37 56 -0.97 - 47 0 0 - 6 35 13 3 8 8.0 43 135 -81 - 6 19 39 - 6 50 42 - 5 52 46 - 7 17 7 -0.97 - 46 0 0 - 6 12 54 3 7 53.3 43 135 -80 - 5 57 14 - 6 28 30 - 5 30 10 - 6 55 6 -0.97 - 45 0 0 - 5 49 21 3 7 38.3 44 136 -80 - 5 33 34 - 6 5 4 - 5 6 18 - 6 31 51 -0.97 - 44 0 0 - 5 24 32 3 7 23.1 44 137 -79 - 5 8 38 - 5 40 22 - 4 41 9 - 6 7 21 -0.97 - 43 0 0 - 4 58 26 3 7 7.7 44 138 -78 - 4 42 24 - 5 14 24 - 4 14 42 - 5 41 36 -0.97 - 42 0 0 - 4 31 1 3 6 52.1 45 139 -77 - 4 14 51 - 4 47 7 - 3 46 54 - 5 14 33 -0.97 - 41 0 0 - 4 2 16 3 6 36.3 45 140 -77 - 3 45 57 - 4 18 31 - 3 17 45 - 4 46 11 -0.97 - 40 0 0 - 3 32 10 3 6 20.2 45 141 -76 - 3 15 41 - 3 48 33 - 2 47 12 - 4 16 29 -0.98 - 39 0 0 - 3 0 39 3 6 3.9 45 142 -75 - 2 44 0 - 3 17 12 - 2 15 14 - 3 45 25 -0.98 - 38 0 0 - 2 27 43 3 5 47.4 45 143 -74 - 2 10 54 - 2 44 27 - 1 41 49 - 3 12 57 -0.98 - 37 0 0 - 1 53 20 3 5 30.7 45 144 -73 - 1 36 19 - 2 10 15 - 1 6 55 - 2 39 3 -0.98 - 36 0 0 - 1 17 27 3 5 13.8 45 145 -72 - 1 0 15 - 1 34 34 - 0 30 29 - 2 3 42 -0.98 - 35 0 0 - 0 40 3 3 4 56.6 46 146 -71 - 0 22 38 - 0 57 22 0 7 30 - 1 26 50 -0.98 - 34 0 0 - 0 1 4 3 4 39.3 45 147 -70 0 16 34 - 0 18 36 0 47 6 - 0 48 27 -0.98 - 33 0 0 0 39 31 3 4 21.7 45 148 -69 0 57 23 0 21 45 1 28 20 - 0 8 30 -0.99 - 32 0 0 1 21 45 3 4 4.0 45 150 -67 1 39 53 1 3 44 2 11 16 0 33 5 -0.99 - 31 0 0 2 5 42 3 3 46.0 45 151 -66 2 24 6 1 47 25 2 55 58 1 16 19 -0.99 - 30 0 0 2 51 24 3 3 27.8 45 152 -65 3 10 5 2 32 50 3 42 27 2 1 16 -0.99 - 29 0 0 3 38 54 3 3 9.4 45 153 -64 3 57 54 3 20 3 4 30 49 2 47 59 -0.99 - 28 0 0 4 28 17 3 2 50.9 44 154 -63 4 47 36 4 9 7 5 21 6 3 36 31 -1.00 - 27 0 0 5 19 36 3 2 32.1 44 156 -61 5 39 16 5 0 5 6 13 23 4 26 56 -1.00 - 26 0 0 6 12 55 3 2 13.2 43 157 -60 6 32 58 5 53 3 7 7 44 5 19 17 -1.00 - 25 0 0 7 8 19 3 1 54.1 43 158 -59 7 28 46 6 48 3 8 4 14 6 13 38 -1.00 - 24 0 0 8 5 53 3 1 34.8 42 159 -58 8 26 45 7 45 11 9 3 0 7 10 5 -1.01 - 23 0 0 9 5 41 3 1 15.4 42 161 -56 9 27 1 8 44 33 10 4 5 8 8 42 -1.01 - 22 0 0 10 7 51 3 0 55.9 41 162 -55 10 29 41 9 46 13 11 7 38 9 9 33 -1.01 - 21 0 0 11 12 27 3 0 36.2 40 163 -53 11 34 50 10 50 18 12 13 46 10 12 46 -1.01 - 20 0 0 12 19 38 3 0 16.4 40 164 -52 12 42 36 11 56 55 13 22 35 11 18 27 -1.02 - 19 0 0 13 29 31 2 59 56.6 39 165 -51 13 53 7 13 6 10 14 34 16 12 26 41 -1.02 - 18 0 0 14 42 15 2 59 36.6 38 166 -49 15 6 33 14 18 14 15 48 58 13 37 38 -1.02 - 17 0 0 15 58 0 2 59 16.7 37 168 -48 16 23 5 15 33 14 17 6 53 14 51 25 -1.03 - 16 0 0 17 16 58 2 58 56.7 36 169 -46 17 42 54 16 51 22 18 28 15 16 8 13 -1.03 - 15 0 0 18 39 21 2 58 36.7 34 170 -44 19 6 14 18 12 51 19 53 20 17 28 12 -1.04 - 14 0 0 20 5 25 2 58 16.7 33 171 -43 20 33 22 19 37 54 21 22 25 18 51 36 -1.04 - 13 0 0 21 35 27 2 57 56.8 32 172 -41 22 4 37 21 6 47 22 55 52 20 18 39 -1.04 - 12 0 0 23 9 50 2 57 37.1 30 173 -39 23 40 22 22 39 51 24 34 10 21 49 38 -1.05 - 11 0 0 24 48 58 2 57 17.5 29 174 -38 25 21 5 24 17 30 26 17 51 23 24 55 -1.05 - 10 0 0 26 33 24 2 56 58.1 27 175 -36 27 7 22 26 0 12 28 7 39 25 4 52 -1.06 - 9 0 0 28 23 49 2 56 39.0 25 175 -34 29 0 0 27 48 35 30 4 29 26 50 3 -1.07 - 8 0 0 30 21 6 2 56 20.3 24 176 -32 30 59 58 29 43 24 32 9 40 28 41 4 -1.07 - 7 0 0 32 26 29 2 56 2.0 22 177 -30 33 8 43 31 45 44 34 25 5 30 38 46 -1.08 - 6 0 0 34 41 42 2 55 44.2 19 178 -28 35 28 17 33 57 3 36 53 35 32 44 18 -1.09 - 5 0 0 37 9 21 2 55 27.2 17 179 -25 38 1 55 36 19 31 39 40 6 34 59 16 -1.11 - 4 0 0 39 53 49 2 55 11.0 14 180 -23 40 55 22 38 56 32 42 54 35 37 26 1 -1.13 - 3 0 0 43 3 38 2 54 56.1 11 180 -20 44 20 55 41 54 21 47 4 38 40 8 29 -1.18 - 2 0 0 47 0 27 2 54 42.8 7 181 -17 48 58 0 45 26 34 .. .. .. 43 13 56 -1.31 - 1 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 50 21 7 .. .. .. 46 59 30 .... 0 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 52 43 30 .... Uncertainty in time = +/- 6 secs Prediction of 2023 Apr 29.2 Data for the target star ------------------------ * name: UCAC4 270-105066 * constellation : Scorpius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 26 16.0715 DE: -36 06 45.831 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 26 16.0716 DE: -36 06 45.832 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3248) Farinella asteroid class: approx. diameter [km]: 39 approx. diameter ["]: 0.024 distance from Earth [AU]: 2.20860 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#57 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): 0.026", 0.007", 96.269° remarks: * orbital elements for (3248)Farinella : Mean anomaly = 298.2126204412 deg Arg. of pericenter = 317.3572706090 deg Long. of node = 12.0386847335 deg Inclination = 10.9007288288 deg Eccentricity = 0.1517650120 Semimajor axis = 3.2036406980 AU Perihelion dist = 2.7174401290 AU Mag: H = 11.02, G = 0.15 Epoch of elements : MJD 60068.12847222 TDT (2023 May 04.1285) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#572023Apr24,5.33,2023,5,4,3.083122,-0.486520,0.504426,-2.943676,-2.838838,-0.003575,0.001178,0.000001,0.000000 -6.0353,-36.1327,132.97,15.87,False UCAC4 270-105066,17.43779764,-36.1127309,0.00,12.29,0.00,0.0,0,,17.46408763,-36.1327247,3.64,0.00,0,0,0 3248,Farinella,15.90,38.6,2.2086,0,0,-0.968,-11.30,,2.2,0 0,298.1905,2023,5,4,317.3573,12.0387,10.9007,0.15177,3.20364,2.71744,11.01,5.0,0.15 1.858,0.0263,0.0067,96,0.0207,Known errors,-1.00,-1,-1,-1 20230504_105066,60063.18 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Apr 29, 04:18 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org