IOTA/IOTA-ES occultation update for (914) Palisana / UCAC4 558-120552 event on 2023 Jul 24, 02:48 UT Visible from Europe, Africa Summary ------- On 2023 Jul 24 UT, the 82 km diameter asteroid (914) Palisana will occult a 12.3 mag star in the constellation Vulpecula 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 0.49 mag to 11.68 mag (the magnitude of the asteroid) for at most 8.140 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 24, 02:39 - 2023 Jul 24, 02:56 * geocentric midpoint of event [JD]: 2460149.61682534 * magnitude of target star: 12.30 * magnitude drop [mag]: 0.49 * estimated maximum duration [s]: 8.140 * Moon: 32 % sunlit, 116° distance * Sun: 138° distance * rough path description: Europe, Africa The occultation path -------------------- * approximate projected width [km]: 102 * 1 sigma uncertainty interval [path widths]: +/- 0.25 * 1 sigma uncertainty interval [seconds]: +/- 1.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.027, +/- 0.013) * 1 sigma uncertainty ellipse (major, minor, PA): (0.030", 0.005", 65°) * approx speed of asteroid's shadow [km/s]: 10.0713 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 558-120552 by 914 Palisana on 2023 Jul 24 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 176 0 0 .. .. .... .. .. .. .. .. .. 64 49 36 .. .. .. 65 15 28 .. .. .. .... 177 0 0 64 38 46 2 56 38.4 1 33 38 65 29 48 .. .. .. 65 55 27 .. .. .. .... 178 0 0 65 17 56 2 56 38.2 1 34 37 66 8 31 64 28 21 66 33 56 64 4 11 -0.66 179 0 0 65 55 40 2 56 37.8 2 35 37 66 45 46 65 6 32 67 10 57 64 42 34 -0.69 -180 0 0 66 31 59 2 56 37.4 3 36 36 67 21 36 65 43 19 67 46 31 65 19 35 -0.71 -179 0 0 67 6 55 2 56 36.8 3 37 35 67 56 2 66 18 44 68 20 41 65 55 14 -0.72 -178 0 0 67 40 32 2 56 36.2 4 38 35 68 29 7 66 52 50 68 53 31 66 29 34 -0.72 -177 0 0 68 12 51 2 56 35.5 5 39 34 69 0 54 67 25 39 69 25 1 67 2 37 -0.73 -176 0 0 68 43 54 2 56 34.7 5 40 33 69 31 25 67 57 13 69 55 16 67 34 26 -0.73 -175 0 0 69 13 44 2 56 33.8 6 41 33 70 0 43 68 27 34 70 24 16 68 5 2 -0.73 -174 0 0 69 42 24 2 56 32.9 7 42 32 70 28 50 68 56 45 70 52 6 68 34 27 -0.73 -173 0 0 70 9 55 2 56 31.9 7 43 32 70 55 48 69 24 48 71 18 48 69 2 45 -0.73 -172 0 0 70 36 21 2 56 30.9 8 44 31 71 21 41 69 51 45 71 44 24 69 29 57 -0.74 -171 0 0 71 1 43 2 56 29.8 8 45 31 71 46 31 70 17 39 72 8 57 69 56 6 -0.74 -170 0 0 71 26 5 2 56 28.7 9 45 30 72 10 20 70 42 32 72 32 29 70 21 14 -0.74 -169 0 0 71 49 28 2 56 27.6 9 46 30 72 33 11 71 6 26 72 55 3 70 45 24 -0.74 -168 0 0 72 11 56 2 56 26.5 10 47 29 72 55 5 71 29 24 73 16 41 71 8 36 -0.74 -167 0 0 72 33 29 2 56 25.3 10 48 29 73 16 7 71 51 28 73 37 26 71 30 54 -0.74 -166 0 0 72 54 10 2 56 24.2 11 49 29 73 36 16 72 12 39 73 57 20 71 52 20 -0.74 -165 0 0 73 14 1 2 56 23.0 11 50 28 73 55 37 72 33 1 74 16 25 72 12 56 -0.74 -164 0 0 73 33 5 2 56 21.8 12 51 28 74 14 10 72 52 34 74 34 43 72 32 43 -0.74 -163 0 0 73 51 23 2 56 20.7 12 52 27 74 31 58 73 11 21 74 52 15 72 51 44 -0.74 -162 0 0 74 8 58 2 56 19.5 12 53 27 74 49 3 73 29 23 75 9 5 73 10 0 -0.74 -161 0 0 74 25 50 2 56 18.3 13 54 27 75 5 27 73 46 43 75 25 14 73 27 33 -0.74 -160 0 0 74 42 2 2 56 17.1 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42 48 23 21 46 21 23 32 -0.74 21 0 0 21 24 45 2 42 45.4 38 281 -18 22 4 6 20 45 52 22 23 45 20 26 48 -0.74 22 0 0 20 28 12 2 42 34.7 36 282 -18 21 7 8 19 49 43 21 26 34 19 30 51 -0.74 23 0 0 19 32 28 2 42 24.2 35 283 -18 20 10 59 18 54 24 20 30 13 18 35 43 -0.74 24 0 0 18 37 36 2 42 14.0 34 284 -17 19 15 43 17 59 55 19 34 44 17 41 26 -0.74 25 0 0 17 43 37 2 42 4.2 33 285 -17 18 21 20 17 6 19 18 40 8 16 48 1 -0.74 26 0 0 16 50 32 2 41 54.7 32 285 -17 17 27 51 16 13 37 17 46 28 15 55 30 -0.74 27 0 0 15 58 22 2 41 45.6 31 286 -16 16 35 18 15 21 49 16 53 43 15 3 53 -0.74 28 0 0 15 7 9 2 41 36.8 30 287 -16 15 43 42 14 30 57 16 1 56 14 13 11 -0.74 29 0 0 14 16 52 2 41 28.3 29 287 -15 14 53 4 13 41 2 15 11 7 13 23 27 -0.74 30 0 0 13 27 34 2 41 20.2 28 288 -15 14 3 24 12 52 5 14 21 16 12 34 39 -0.74 31 0 0 12 39 15 2 41 12.5 26 288 -14 13 14 44 12 4 6 13 32 25 11 46 50 -0.74 32 0 0 11 51 55 2 41 5.0 25 289 -14 12 27 4 11 17 5 12 44 35 10 59 59 -0.74 33 0 0 11 5 35 2 40 58.0 24 289 -13 11 40 24 10 31 5 11 57 45 10 14 8 -0.74 34 0 0 10 20 15 2 40 51.3 23 289 -12 10 54 46 9 46 4 11 11 57 9 29 16 -0.74 35 0 0 9 35 57 2 40 44.9 22 290 -12 10 10 8 9 2 4 10 27 10 8 45 25 -0.75 36 0 0 8 52 40 2 40 38.9 21 290 -11 9 26 33 8 19 4 9 43 25 8 2 34 -0.75 37 0 0 8 10 24 2 40 33.2 20 290 -11 8 43 59 7 37 6 9 0 42 7 20 43 -0.75 38 0 0 7 29 10 2 40 27.9 18 290 -10 8 2 28 6 56 8 8 19 2 6 39 54 -0.75 39 0 0 6 48 57 2 40 22.9 17 291 -9 7 21 59 6 16 12 7 38 25 6 0 6 -0.75 40 0 0 6 9 47 2 40 18.3 16 291 -9 6 42 32 5 37 18 6 58 50 5 21 19 -0.76 41 0 0 5 31 39 2 40 14.0 15 291 -8 6 4 8 4 59 25 6 20 18 4 43 34 -0.76 42 0 0 4 54 32 2 40 10.0 14 291 -7 5 26 46 4 22 33 5 42 49 4 6 50 -0.76 43 0 0 4 18 28 2 40 6.4 13 291 -7 4 50 27 3 46 43 5 6 22 3 31 7 -0.77 44 0 0 3 43 25 2 40 3.0 12 291 -6 4 15 10 3 11 54 4 30 57 2 56 25 -0.77 45 0 0 3 9 24 2 40 0.0 10 291 -5 3 40 55 2 38 7 3 56 36 2 22 44 -0.78 46 0 0 2 36 24 2 39 57.4 9 291 -4 3 7 42 2 5 20 3 23 16 1 50 4 -0.78 47 0 0 2 4 26 2 39 55.0 8 292 -4 2 35 31 1 33 35 2 50 58 1 18 24 -0.79 48 0 0 1 33 29 2 39 52.9 7 292 -3 2 4 22 1 2 50 2 19 43 0 47 46 -0.80 49 0 0 1 3 33 2 39 51.2 6 292 -2 1 34 13 0 33 6 1 49 29 0 18 7 -0.82 50 0 0 0 34 38 2 39 49.8 5 292 -1 1 5 7 0 4 22 1 20 16 - 0 10 31 -0.84 51 0 0 0 6 43 2 39 48.6 4 292 -1 0 37 1 - 0 23 22 0 52 4 - 0 38 10 -0.87 52 0 0 - 0 20 11 2 39 47.7 3 292 0 0 9 55 - 0 50 6 0 24 54 - 1 4 49 -0.92 53 0 0 - 0 46 6 2 39 47.2 2 292 1 - 0 16 10 - 1 15 50 - 0 1 16 - 1 30 28 -1.05 54 0 0 - 1 11 1 2 39 46.9 1 292 2 - 0 41 14 - 1 40 35 - 0 26 26 - 1 55 9 -1.70 Uncertainty in time = +/- 2 secs Prediction of 2023 May 29.0 Data for the target star ------------------------ * name: UCAC4 558-120552 * constellation : Vulpecula * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 20 25 12.5135 DE: +21 31 38.360 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 20 25 12.5135 DE: +21 31 38.360 * 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: (914) Palisana asteroid class: approx. diameter [km]: 82 approx. diameter ["]: 0.107 distance from Earth [AU]: 1.05180 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): 0.030", 0.005", 65.105° remarks: * orbital elements for (914)Palisana : Mean anomaly = 3.2265417224 deg Arg. of pericenter = 49.1322663748 deg Long. of node = 255.7686072610 deg Inclination = 25.2064197498 deg Eccentricity = 0.2142310751 Semimajor axis = 2.4577230276 AU Perihelion dist = 1.9312023812 AU Mag: H = 9.13, G = 0.15 Epoch of elements : MJD 60149.11673611 TDT (2023 Jul 24.1167) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#662023Apr24,8.14,2023,7,24,2.803808,0.371756,0.470445,-4.459890,3.524649,-0.000246,-0.003310,0.000001,0.000000 -37.0678,21.6038,139.58,19.94,False UCAC4 558-120552,20.42014264,21.5273219,0.00,12.30,0.00,0.0,0,,20.43773304,21.6037966,0.49,0.00,0,0,0 914,Palisana,11.68,82.0,1.0518,0,0,-2.674,29.45,,4.2,0 0,3.1967,2023,7,24,49.1323,255.7686,25.2064,0.21423,2.45772,1.93120,9.13,5.0,0.15 1.247,0.0297,0.0053,65,0.0266,Known errors,-1.00,-1,-1,-1 20230724_120552,60092.99 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 May 28, 23:39 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org