IOTA/IOTA-ES occultation update for (2) Pallas / UCAC4 377-015793 event on 2023 Mar 02, 18:04 UT Visible from Europe, Africa Summary ------- On 2023 Mar 02 UT, the 532 km diameter asteroid (2) Pallas will occult a 12.3 mag star in the constellation Canis Major for observers along a path across Europe, Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.02 mag to 7.87 mag (the magnitude of the asteroid) for at most 27.240 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 Mar 02, 17:58 - 2023 Mar 02, 18:09 * geocentric midpoint of event [JD]: 2460006.25282255 * magnitude of target star: 12.25 * magnitude drop [mag]: 0.02 * estimated maximum duration [s]: 27.240 * Moon: 81 % sunlit, 44° distance * Sun: 113° distance * rough path description: Europe, Africa Additional comments ------------------- extremely low mag drop The occultation path -------------------- * approximate projected width [km]: 543 * 1 sigma uncertainty interval [path widths]: +/- 0.09 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.045, +/- 0.016) * 1 sigma uncertainty ellipse (major, minor, PA): (0.045", 0.016", 88°) * approx speed of asteroid's shadow [km/s]: 19.5320 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 377-015793 by 2 Pallas on 2023 Mar 2 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 - 16 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. -47 46 3 .... - 15 0 0 .. .. .... .. .. .. .. .. .. .. .. .. -47 46 33 .. .. .. -47 12 32 .... - 14 0 0 .. .. .... .. .. .. .. .. .. .. .. .. -47 11 57 .. .. .. -46 37 26 .... - 13 0 0 .. .. .... .. .. .. .. .. .. .. .. .. -46 35 44 .. .. .. -46 0 40 .... - 12 0 0 .. .. .... .. .. .. .. .. .. .. .. .. -45 57 48 .. .. .. -45 22 10 .... - 11 0 0 -48 41 21 18 0 14.3 43 58 15 .. .. .. -45 18 4 .. .. .. -44 41 51 .... - 10 0 0 -48 3 8 18 0 18.0 44 58 14 -51 25 52 -44 36 26 -52 1 12 -43 59 36 -0.21 - 9 0 0 -47 23 6 18 0 21.9 45 57 13 -50 49 12 -43 52 49 -51 25 7 -43 15 19 -0.21 - 8 0 0 -46 41 8 18 0 25.9 46 56 13 -50 10 48 -43 7 5 -50 47 18 -42 28 54 -0.21 - 7 0 0 -45 57 10 18 0 30.2 47 56 12 -49 30 32 -42 19 9 -50 7 41 -41 40 13 -0.21 - 6 0 0 -45 11 3 18 0 34.7 48 56 11 -48 48 20 -41 28 51 -49 26 9 -40 49 9 -0.21 - 5 0 0 -44 22 42 18 0 39.4 49 55 11 -48 4 6 -40 36 5 -48 42 36 -39 55 34 -0.21 - 4 0 0 -43 31 57 18 0 44.3 50 55 10 -47 17 40 -39 40 41 -47 56 55 -38 59 19 -0.21 - 3 0 0 -42 38 41 18 0 49.5 51 54 9 -46 28 58 -38 42 31 -47 8 58 -38 0 14 -0.21 - 2 0 0 -41 42 45 18 0 55.0 52 54 8 -45 37 49 -37 41 24 -46 18 39 -36 58 9 -0.21 - 1 0 0 -40 43 59 18 1 0.7 53 54 7 -44 44 7 -36 37 9 -45 25 47 -35 52 53 -0.21 0 0 0 -39 42 13 18 1 6.8 55 54 7 -43 47 40 -35 29 35 -44 30 15 -34 44 15 -0.21 1 0 0 -38 37 16 18 1 13.2 56 54 6 -42 48 21 -34 18 30 -43 31 52 -33 32 1 -0.21 2 0 0 -37 28 56 18 1 20.0 57 54 5 -41 45 57 -33 3 40 -42 30 28 -32 15 57 -0.21 3 0 0 -36 17 1 18 1 27.1 59 54 4 -40 40 17 -31 44 50 -41 25 51 -30 55 50 -0.21 4 0 0 -35 1 16 18 1 34.7 60 54 3 -39 31 9 -30 21 46 -40 17 50 -29 31 23 -0.21 5 0 0 -33 41 27 18 1 42.6 61 54 2 -38 18 21 -28 54 12 -39 6 12 -28 2 20 -0.21 6 0 0 -32 17 20 18 1 51.1 63 55 1 -37 1 37 -27 21 48 -37 50 42 -26 28 23 -0.21 7 0 0 -30 48 37 18 2 0.1 64 56 0 -35 40 45 -25 44 18 -36 31 8 -24 49 13 -0.21 8 0 0 -29 15 1 18 2 9.6 66 57 -1 -34 15 27 -24 1 22 -35 7 12 -23 4 29 -0.21 9 0 0 -27 36 15 18 2 19.6 68 59 -2 -32 45 27 -22 12 39 -33 38 40 -21 13 52 -0.21 10 0 0 -25 52 0 18 2 30.2 69 61 -4 -31 10 29 -20 17 48 -32 5 13 -19 16 58 -0.21 11 0 0 -24 1 55 18 2 41.5 71 64 -5 -29 30 14 -18 16 27 -30 26 35 -17 13 26 -0.21 12 0 0 -22 5 43 18 2 53.4 73 68 -6 -27 44 24 -16 8 14 -28 42 28 -15 2 53 -0.21 13 0 0 -20 3 2 18 3 6.0 74 73 -8 -25 52 41 -13 52 47 -26 52 32 -12 44 56 -0.21 14 0 0 -17 53 34 18 3 19.4 76 79 -9 -23 54 47 -11 29 46 -24 56 31 -10 19 14 -0.21 15 0 0 -15 37 1 18 3 33.4 77 88 -10 -21 50 23 - 8 58 50 -22 54 6 - 7 45 28 -0.21 16 0 0 -13 13 6 18 3 48.1 78 99 -12 -19 39 14 - 6 19 45 -20 45 0 - 5 3 21 -0.21 17 0 0 -10 41 39 18 4 3.6 78 112 -13 -17 21 4 - 3 32 18 -18 29 0 - 2 12 40 -0.20 18 0 0 - 8 2 29 18 4 19.8 78 125 -15 -14 55 44 - 0 36 23 -16 5 53 0 46 38 -0.20 19 0 0 - 5 15 35 18 4 36.6 77 138 -16 -12 23 6 2 27 56 -13 35 33 3 54 31 -0.20 20 0 0 - 2 21 3 18 4 54.0 75 148 -18 - 9 43 9 5 40 27 -10 57 56 7 10 44 -0.20 21 0 0 0 40 51 18 5 11.9 73 157 -19 - 6 56 0 9 0 43 - 8 13 8 10 34 49 -0.20 22 0 0 3 49 41 18 5 30.2 71 163 -21 - 4 1 55 12 28 1 - 5 21 24 14 5 59 -0.20 23 0 0 7 4 44 18 5 48.7 68 168 -22 - 1 1 18 16 1 21 - 2 23 6 17 43 13 -0.20 24 0 0 10 25 6 18 6 7.2 65 172 -23 2 5 10 19 39 27 0 41 10 21 25 7 -0.20 25 0 0 13 49 37 18 6 25.6 61 175 -25 5 16 39 23 20 41 3 50 35 25 9 59 -0.20 26 0 0 17 16 51 18 6 43.6 58 177 -26 8 32 6 27 3 10 7 4 8 28 55 49 -0.20 27 0 0 20 45 12 18 7 1.0 55 179 -27 11 50 14 30 44 50 10 20 38 32 40 27 -0.19 28 0 0 24 12 56 18 7 17.6 51 181 -27 15 9 37 34 23 30 13 38 41 36 21 34 -0.19 29 0 0 27 38 17 18 7 33.3 48 183 -28 18 28 45 37 56 57 16 56 48 39 56 54 -0.19 30 0 0 30 59 28 18 7 47.7 44 184 -28 21 46 4 41 23 13 20 13 28 43 24 22 -0.19 31 0 0 34 14 53 18 8 1.0 41 185 -29 25 0 1 44 40 30 23 27 9 46 42 7 -0.19 32 0 0 37 23 7 18 8 12.9 38 186 -29 28 9 13 47 47 20 26 36 27 49 48 42 -0.19 33 0 0 40 23 0 18 8 23.5 35 187 -29 31 12 23 50 42 44 29 40 6 52 43 7 -0.19 34 0 0 43 13 42 18 8 32.9 32 188 -29 34 8 31 53 26 3 32 37 4 55 24 48 -0.19 35 0 0 45 54 40 18 8 41.1 29 189 -28 36 56 49 55 57 5 35 26 29 57 53 37 -0.19 36 0 0 48 25 35 18 8 48.1 26 190 -28 39 36 44 58 15 57 38 7 48 60 9 48 -0.20 37 0 0 50 46 28 18 8 54.1 24 191 -28 42 7 58 60 23 3 40 40 38 62 13 50 -0.20 38 0 0 52 57 28 18 8 59.2 22 192 -27 44 30 23 62 18 59 43 4 51 64 6 27 -0.20 39 0 0 54 58 56 18 9 3.6 20 193 -27 46 44 4 64 4 29 45 20 27 65 48 27 -0.20 40 0 0 56 51 18 18 9 7.2 18 193 -27 48 49 11 65 40 21 47 27 36 67 20 44 -0.20 41 0 0 58 35 6 18 9 10.2 16 194 -26 50 46 4 67 7 25 49 26 34 68 44 12 -0.20 42 0 0 60 10 54 18 9 12.7 14 195 -26 52 35 5 68 26 29 51 17 41 69 59 42 -0.20 43 0 0 61 39 16 18 9 14.8 13 196 -25 54 16 39 69 38 21 53 1 22 71 8 5 -0.20 44 0 0 63 0 47 18 9 16.5 11 197 -25 55 51 13 70 43 43 54 38 2 72 10 6 -0.20 45 0 0 64 16 0 18 9 17.9 10 198 -24 57 19 14 71 43 16 56 8 7 73 6 25 -0.20 46 0 0 65 25 27 18 9 19.1 9 199 -24 58 41 10 72 37 37 57 32 5 73 57 40 -0.20 47 0 0 66 29 38 18 9 20.0 8 200 -24 59 57 27 73 27 17 58 50 20 .. .. .. -0.20 48 0 0 67 29 1 18 9 20.8 6 201 -23 61 8 31 74 12 47 60 3 19 .. .. .. -0.20 49 0 0 68 24 0 18 9 21.3 5 202 -23 62 14 45 .. .. .. 61 11 23 .. .. .. -0.20 50 0 0 69 14 59 18 9 21.8 5 203 -22 63 16 32 .. .. .. 62 14 57 .. .. .. -0.19 51 0 0 70 2 20 18 9 22.2 4 204 -22 64 14 13 .. .. .. 63 14 20 .. .. .. -0.19 52 0 0 70 46 20 18 9 22.4 3 204 -22 65 8 7 .. .. .. 64 9 53 .. .. .. -0.19 53 0 0 71 27 19 18 9 22.6 2 205 -22 65 58 32 .. .. .. 65 1 52 .. .. .. -0.18 54 0 0 72 5 30 18 9 22.7 1 206 -21 66 45 45 .. .. .. 65 50 34 .. .. .. -0.17 55 0 0 72 41 10 18 9 22.8 1 207 -21 67 29 59 .. .. .. 66 36 14 .. .. .. -0.15 56 0 0 73 14 30 18 9 22.8 0 208 -21 68 11 30 .. .. .. 67 19 7 .. .. .. 0.25 57 0 0 .. .. .... .. .. .. .. .. .. 68 50 29 .. .. .. 67 59 24 .. .. .. .... 58 0 0 .. .. .... .. .. .. .. .. .. 69 27 8 .. .. .. 68 37 18 .. .. .. .... 59 0 0 .. .. .... .. .. .. .. .. .. 70 1 37 .. .. .. 69 12 59 .. .. .. .... 60 0 0 .. .. .... .. .. .. .. .. .. 70 34 7 .. .. .. 69 46 36 .. .. .. .... 61 0 0 .. .. .... .. .. .. .. .. .. 71 4 45 .. .. .. 70 18 19 .. .. .. .... 62 0 0 .. .. .... .. .. .. .. .. .. 71 33 40 .. .. .. 70 48 16 .. .. .. .... 63 0 0 .. .. .... .. .. .. .. .. .. 72 0 58 .. .. .. 71 16 34 .. .. .. .... 64 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 71 43 19 .. .. .. .... Uncertainty in time = +/- 3 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: UCAC4 377-015793 * constellation : Canis Major * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 36 16.4254 DE: -14 41 27.018 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 36 16.4253 DE: -14 41 27.018 * 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: (2) Pallas asteroid class: ShapeModel approx. diameter [km]: 532 approx. diameter ["]: 0.476 distance from Earth [AU]: 1.54110 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 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): 0.045", 0.016", 87.759° remarks: * orbital elements for (2)Pallas : Mean anomaly = 359.0793879095 deg Arg. of pericenter = 310.8650757752 deg Long. of node = 172.9181846167 deg Inclination = 34.9270070483 deg Eccentricity = 0.2300902170 Semimajor axis = 2.7696525942 AU Perihelion dist = 2.1323826277 AU Mag: H = 4.12, G = 0.11 Epoch of elements : MJD 60005.75284722 TDT (2023 Mar 02.7528) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Feb07,27.24,2023,3,2,18.067741,-0.188052,0.067401,3.719200,10.378104,0.004915,0.001250,0.000000,-0.000001 28.0464,-14.7124,-87.99,-7.10,False UCAC4 377-015793,6.60456262,-14.6908381,0.00,12.25,0.00,0.0,0,,6.62216255,-14.7124479,0.02,0.00,0,0,0 2,Pallas,7.87,532.0,1.5411,0,0,1.464,59.22,,28.2,0 0,358.9184,2023,3,2,310.8651,172.9182,34.9270,0.23009,2.76965,2.13238,4.12,5.0,0.15 1.088,0.0447,0.0163,88,0.0419,Known errors,-1.00,-1,-1,-1 20230302_015793,59990.86 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:42 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org