IOTA/IOTA-ES occultation update for (1523) Pieksamaki / TYC 6338-00126-1 event on 2024 Sep 11, 00:01 UT Visible from Summary ------- On 2024 Sep 11 UT, the 9.12675286447323 km diameter asteroid (1523) Pieksamaki will occult a 9.1 mag star in the constellation Capricornus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.14 mag to 16.20 mag (the magnitude of the asteroid) for at most 2.170 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: 60 * date and approx. time of event: 2024 Sep 10, 23:36 - 2024 Sep 11, 00:26 * geocentric midpoint of event [JD]: 2460564.50070650 * magnitude of target star: 9.06 * magnitude drop [mag]: 7.14 * estimated maximum duration [s]: 2.170 * Moon: 47 % sunlit, 51° distance * Sun: 137° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 9 * 1 sigma uncertainty interval [path widths]: +/- 1.03 * 1 sigma uncertainty interval [seconds]: +/- 3.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.004", 68°) * approx speed of asteroid's shadow [km/s]: 4.3071 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6338-00126-1 by 1523 Pieksamaki on 2024 Sep 11 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 -133 0 0 13 53 13 0 25 39.1 0 110 36 13 55 56 13 50 29 14 1 30 13 44 56 .... -132 0 0 13 31 32 0 25 38.7 1 110 35 13 34 15 13 28 49 13 39 50 13 23 15 0.03 -131 0 0 13 9 41 0 25 37.8 2 111 34 13 12 24 13 6 58 13 17 59 13 1 23 -0.03 -130 0 0 12 47 40 0 25 36.5 3 111 33 12 50 23 12 44 56 12 55 58 12 39 21 -0.05 -129 0 0 12 25 29 0 25 34.6 4 111 32 12 28 12 12 22 45 12 33 47 12 17 10 -0.06 -128 0 0 12 3 9 0 25 32.3 6 111 31 12 5 52 12 0 25 12 11 28 11 54 50 -0.07 -127 0 0 11 40 40 0 25 29.5 7 112 30 11 43 24 11 37 56 11 48 59 11 32 21 -0.08 -126 0 0 11 18 3 0 25 26.2 8 112 29 11 20 47 11 15 19 11 26 23 11 9 44 -0.08 -125 0 0 10 55 19 0 25 22.4 9 112 28 10 58 3 10 52 35 11 3 39 10 46 59 -0.08 -124 0 0 10 32 27 0 25 18.2 10 112 27 10 35 11 10 29 43 10 40 47 10 24 7 -0.09 -123 0 0 10 9 29 0 25 13.4 11 112 26 10 12 13 10 6 45 10 17 50 10 1 9 -0.09 -122 0 0 9 46 25 0 25 8.2 12 112 25 9 49 10 9 43 41 9 54 46 9 38 5 -0.09 -121 0 0 9 23 16 0 25 2.5 13 113 24 9 26 0 9 20 31 9 31 37 9 14 55 -0.09 -120 0 0 9 0 1 0 24 56.4 14 113 23 9 2 46 8 57 17 9 8 22 8 51 40 -0.09 -119 0 0 8 36 42 0 24 49.7 15 113 22 8 39 27 8 33 58 8 45 4 8 28 21 -0.09 -118 0 0 8 13 20 0 24 42.6 16 113 21 8 16 4 8 10 35 8 21 41 8 4 59 -0.09 -117 0 0 7 49 53 0 24 35.1 17 113 20 7 52 38 7 47 9 7 58 15 7 41 32 -0.09 -116 0 0 7 26 25 0 24 27.0 18 113 19 7 29 9 7 23 40 7 34 46 7 18 3 -0.09 -115 0 0 7 2 53 0 24 18.6 19 114 18 7 5 38 7 0 9 7 11 15 6 54 32 -0.10 -114 0 0 6 39 20 0 24 9.7 20 114 17 6 42 5 6 36 36 6 47 41 6 30 59 -0.10 -113 0 0 6 15 46 0 24 0.3 21 114 16 6 18 30 6 13 1 6 24 7 6 7 24 -0.10 -112 0 0 5 52 11 0 23 50.5 22 114 16 5 54 55 5 49 26 6 0 32 5 43 49 -0.10 -111 0 0 5 28 35 0 23 40.2 23 114 15 5 31 20 5 25 51 5 36 56 5 20 14 -0.10 -110 0 0 5 5 0 0 23 29.6 24 114 14 5 7 44 5 2 15 5 13 21 4 56 39 -0.10 -109 0 0 4 41 25 0 23 18.5 25 114 13 4 44 10 4 38 41 4 49 47 4 33 4 -0.10 -108 0 0 4 17 52 0 23 6.9 26 114 12 4 20 37 4 15 8 4 26 13 4 9 31 -0.10 -107 0 0 3 54 21 0 22 55.0 27 114 11 3 57 5 3 51 36 4 2 42 3 46 0 -0.10 -106 0 0 3 30 52 0 22 42.7 28 114 10 3 33 36 3 28 7 3 39 12 3 22 31 -0.10 -105 0 0 3 7 25 0 22 29.9 29 114 9 3 10 9 3 4 41 3 15 46 2 59 5 -0.10 -104 0 0 2 44 2 0 22 16.8 30 115 8 2 46 46 2 41 17 2 52 22 2 35 41 -0.10 -103 0 0 2 20 42 0 22 3.3 31 115 7 2 23 26 2 17 58 2 29 2 2 12 22 -0.10 -102 0 0 1 57 26 0 21 49.4 32 115 6 2 0 10 1 54 42 2 5 46 1 49 7 -0.10 -101 0 0 1 34 15 0 21 35.2 33 115 5 1 36 59 1 31 31 1 42 35 1 25 56 -0.10 -100 0 0 1 11 9 0 21 20.5 34 115 4 1 13 53 1 8 25 1 19 28 1 2 50 -0.10 - 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23 254 -60 -13 17 7 -13 22 21 -13 11 44 -13 27 43 -0.09 35 0 0 -13 5 9 23 38 8.4 - 22 254 -59 -13 2 32 -13 7 47 -12 57 9 -13 13 9 -0.09 36 0 0 -12 50 14 23 37 59.4 - 21 254 -58 -12 47 37 -12 52 52 -12 42 13 -12 58 15 -0.09 37 0 0 -12 34 59 23 37 50.7 - 20 253 -57 -12 32 21 -12 37 38 -12 26 58 -12 43 1 -0.09 38 0 0 -12 19 25 23 37 42.4 - 19 253 -56 -12 16 46 -12 22 3 -12 11 22 -12 27 27 -0.09 39 0 0 -12 3 30 23 37 34.5 - 18 253 -55 -12 0 51 -12 6 8 -11 55 27 -12 11 33 -0.09 40 0 0 -11 47 15 23 37 27.0 - 17 253 -54 -11 44 36 -11 49 54 -11 39 11 -11 55 19 -0.09 41 0 0 -11 30 41 23 37 19.9 - 16 253 -54 -11 28 2 -11 33 20 -11 22 36 -11 38 45 -0.09 42 0 0 -11 13 46 23 37 13.1 - 15 252 -53 -11 11 7 -11 16 26 -11 5 41 -11 21 51 -0.09 43 0 0 -10 56 33 23 37 6.8 - 14 252 -52 -10 53 53 -10 59 12 -10 48 27 -11 4 38 -0.09 44 0 0 -10 39 0 23 37 0.9 - 13 252 -51 -10 36 20 -10 41 39 -10 30 53 -10 47 6 -0.09 45 0 0 -10 21 7 23 36 55.4 - 12 252 -50 -10 18 27 -10 23 47 -10 13 0 -10 29 14 -0.09 46 0 0 -10 2 55 23 36 50.3 - 11 252 -49 -10 0 15 -10 5 35 - 9 54 47 -10 11 3 -0.09 47 0 0 - 9 44 24 23 36 45.7 - 10 252 -48 - 9 41 44 - 9 47 5 - 9 36 16 - 9 52 33 -0.09 48 0 0 - 9 25 35 23 36 41.5 - 9 251 -47 - 9 22 54 - 9 28 15 - 9 17 25 - 9 33 44 -0.09 49 0 0 - 9 6 26 23 36 37.7 - 8 251 -46 - 9 3 45 - 9 9 7 - 8 58 16 - 9 14 36 -0.09 50 0 0 - 8 46 59 23 36 34.5 - 7 251 -45 - 8 44 18 - 8 49 40 - 8 38 48 - 8 55 10 -0.09 51 0 0 - 8 27 13 23 36 31.6 - 6 251 -44 - 8 24 32 - 8 29 55 - 8 19 2 - 8 35 25 -0.09 52 0 0 - 8 7 10 23 36 29.3 - 5 251 -43 - 8 4 28 - 8 9 51 - 7 58 57 - 8 15 22 -0.09 53 0 0 - 7 46 48 23 36 27.4 - 3 251 -42 - 7 44 6 - 7 49 30 - 7 38 35 - 7 55 1 -0.08 54 0 0 - 7 26 9 23 36 26.0 - 2 251 -41 - 7 23 27 - 7 28 51 - 7 17 55 - 7 34 23 -0.08 55 0 0 - 7 5 12 23 36 25.1 - 1 250 -40 - 7 2 30 - 7 7 54 - 6 56 57 - 7 13 26 -0.06 56 0 0 - 6 43 58 23 36 24.7 - 0 250 -39 - 6 41 15 - 6 46 41 - 6 35 43 - 6 52 13 0.09 Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 6338-00126-1 * constellation : Capricornus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 20 32 50.5754 DE: -19 38 14.562 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 20 32 50.5753 DE: -19 38 14.563 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 9.1 * B mag [mag]: 10.0 * Diameter [mas]: 0.20 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1523) Pieksamaki asteroid class: approx. diameter [km]: 9 approx. diameter ["]: 0.008 distance from Earth [AU]: 1.60800 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#53 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): 0.014", 0.004", 68.21° remarks: * orbital elements for (1523)Pieksamaki : Mean anomaly = 162.9724847057 deg Arg. of pericenter = 188.3180337350 deg Long. of node = 327.7385952311 deg Inclination = 5.1407677848 deg Eccentricity = 0.0938960881 Semimajor axis = 2.2417001943 AU Perihelion dist = 2.0312133153 AU Mag: H = 12.35, G = 0.15 Epoch of elements : MJD 60564.00070651 TDT (2024 Sep 11.0007) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#532023Apr24,2.17,2024,9,11,0.016956,0.012842,0.066533,-2.387340,0.458852,0.003647,0.000995,0.000001,0.000000 -42.1919,-19.5532,178.91,4.45,False TYC 6338-00126-1,20.54738207,-19.6373784,9.98,9.06,8.56,0.2,0,,20.57131337,-19.5532425,7.14,7.19,0,0,0 1523,Pieksamaki,16.20,9.360,1.6080,0,0,-0.922,2.51,,1.0,0 0,162.6786,2024,9,10,188.3180,327.7386,5.1408,0.09390,2.24170,2.03121,12.35,5.0,0.15 2.023,0.0137,0.0043,68,0.0082,Known errors,1.18,0,-1,-1 20240911_0126-1,60140.55 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:18 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org