IOTA/IOTA-ES occultation update for (2103) Laverna / UCAC4 468-140041 event on 2024 Oct 03, 20:35 UT Visible from Summary ------- On 2024 Oct 03 UT, the 23.967 km diameter asteroid (2103) Laverna will occult a 11.7 mag star in the constellation Pisces for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.95 mag to 16.66 mag (the magnitude of the asteroid) for at most 1.770 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: 2024 Oct 03, 20:28 - 2024 Oct 03, 20:43 * geocentric midpoint of event [JD]: 2460587.35829505 * magnitude of target star: 11.72 * magnitude drop [mag]: 4.95 * estimated maximum duration [s]: 1.770 * Moon: 1 % sunlit, 145° distance * Sun: 155° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 26 * 1 sigma uncertainty interval [path widths]: +/- 0.15 * 1 sigma uncertainty interval [seconds]: +/- 2.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.002", 62°) * approx speed of asteroid's shadow [km/s]: 13.5245 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 468-140041 by 2103 Laverna on 2024 Oct 3 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 - 64 0 0 -47 30 11 20 43 16.2 0 84 17 -47 23 12 -47 37 10 -47 21 5 -47 39 18 .... - 63 0 0 -47 26 3 20 43 16.1 1 84 16 -47 19 4 -47 33 3 -47 16 57 -47 35 11 0.21 - 62 0 0 -47 21 35 20 43 16.0 2 83 16 -47 14 36 -47 28 35 -47 12 28 -47 30 43 0.28 - 61 0 0 -47 16 46 20 43 15.8 2 82 15 -47 9 46 -47 23 47 -47 7 39 -47 25 55 0.31 - 60 0 0 -47 11 37 20 43 15.5 3 81 14 -47 4 36 -47 18 38 -47 2 29 -47 20 46 0.33 - 59 0 0 -47 6 7 20 43 15.1 4 81 14 -46 59 6 -47 13 8 -46 56 58 -47 15 16 0.34 - 58 0 0 -47 0 16 20 43 14.7 4 80 13 -46 53 15 -47 7 18 -46 51 6 -47 9 26 0.35 - 57 0 0 -46 54 4 20 43 14.2 5 79 12 -46 47 2 -47 1 7 -46 44 54 -47 3 15 0.35 - 56 0 0 -46 47 32 20 43 13.6 6 79 12 -46 40 29 -46 54 35 -46 38 21 -46 56 44 0.36 - 55 0 0 -46 40 39 20 43 13.0 6 78 11 -46 33 35 -46 47 42 -46 31 27 -46 49 51 0.36 - 54 0 0 -46 33 24 20 43 12.2 7 77 10 -46 26 20 -46 40 28 -46 24 11 -46 42 37 0.36 - 53 0 0 -46 25 49 20 43 11.4 8 76 10 -46 18 44 -46 32 54 -46 16 35 -46 35 3 0.37 - 52 0 0 -46 17 52 20 43 10.6 9 76 9 -46 10 47 -46 24 58 -46 8 38 -46 27 7 0.37 - 51 0 0 -46 9 35 20 43 9.6 9 75 8 -46 2 29 -46 16 41 -46 0 19 -46 18 51 0.37 - 50 0 0 -46 0 56 20 43 8.6 10 74 8 -45 53 50 -46 8 3 -45 51 40 -46 10 13 0.37 - 49 0 0 -45 51 56 20 43 7.4 11 73 7 -45 44 49 -45 59 3 -45 42 39 -46 1 14 0.37 - 48 0 0 -45 42 34 20 43 6.2 11 73 6 -45 35 27 -45 49 43 -45 33 16 -45 51 53 0.37 - 47 0 0 -45 32 52 20 43 5.0 12 72 6 -45 25 43 -45 40 1 -45 23 32 -45 42 11 0.37 - 46 0 0 -45 22 47 20 43 3.6 13 71 5 -45 15 38 -45 29 57 -45 13 27 -45 32 8 0.38 - 45 0 0 -45 12 21 20 43 2.2 14 71 4 -45 5 11 -45 19 32 -45 3 0 -45 21 43 0.38 - 44 0 0 -45 1 34 20 43 0.6 14 70 3 -44 54 23 -45 8 45 -44 52 11 -45 10 57 0.38 - 43 0 0 -44 50 24 20 42 59.0 15 69 3 -44 43 12 -44 57 37 -44 41 1 -44 59 48 0.38 - 42 0 0 -44 38 53 20 42 57.3 16 68 2 -44 31 41 -44 46 7 -44 29 29 -44 48 19 0.38 - 41 0 0 -44 27 0 20 42 55.5 16 68 1 -44 19 47 -44 34 15 -44 17 35 -44 36 27 0.38 - 40 0 0 -44 14 46 20 42 53.6 17 67 1 -44 7 31 -44 22 1 -44 5 19 -44 24 13 0.38 - 39 0 0 -44 2 9 20 42 51.6 18 66 0 -43 54 54 -44 9 25 -43 52 41 -44 11 38 0.38 - 38 0 0 -43 49 10 20 42 49.6 19 66 -1 -43 41 54 -43 56 27 -43 39 41 -43 58 40 0.38 - 37 0 0 -43 35 50 20 42 47.4 19 65 -2 -43 28 32 -43 43 7 -43 26 19 -43 45 21 0.38 - 36 0 0 -43 22 7 20 42 45.2 20 64 -2 -43 14 48 -43 29 25 -43 12 35 -43 31 39 0.38 - 35 0 0 -43 8 2 20 42 42.8 21 63 -3 -43 0 42 -43 15 21 -42 58 29 -43 17 35 0.38 - 34 0 0 -42 53 35 20 42 40.4 22 63 -4 -42 46 14 -43 0 55 -42 44 0 -43 3 9 0.38 - 33 0 0 -42 38 45 20 42 37.8 22 62 -5 -42 31 24 -42 46 7 -42 29 10 -42 48 21 0.38 - 32 0 0 -42 23 33 20 42 35.2 23 61 -5 -42 16 11 -42 30 56 -42 13 57 -42 33 11 0.38 - 31 0 0 -42 8 0 20 42 32.5 24 61 -6 -42 0 36 -42 15 23 -41 58 22 -42 17 38 0.38 - 30 0 0 -41 52 3 20 42 29.6 25 60 -7 -41 44 39 -41 59 28 -41 42 24 -42 1 43 0.38 - 29 0 0 -41 35 45 20 42 26.7 25 59 -8 -41 28 20 -41 43 11 -41 26 5 -41 45 26 0.39 - 28 0 0 -41 19 4 20 42 23.7 26 58 -9 -41 11 38 -41 26 31 -41 9 23 -41 28 47 0.39 - 27 0 0 -41 2 2 20 42 20.5 27 58 -9 -40 54 34 -41 9 29 -40 52 18 -41 11 45 0.39 - 26 0 0 -40 44 36 20 42 17.3 28 57 -10 -40 37 8 -40 52 5 -40 34 52 -40 54 22 0.39 - 25 0 0 -40 26 49 20 42 13.9 29 56 -11 -40 19 20 -40 34 19 -40 17 3 -40 36 36 0.39 - 24 0 0 -40 8 40 20 42 10.4 29 55 -12 -40 1 10 -40 16 10 -39 58 53 -40 18 28 0.39 - 23 0 0 -39 50 8 20 42 6.9 30 55 -13 -39 42 37 -39 57 40 -39 40 20 -39 59 57 0.39 - 22 0 0 -39 31 15 20 42 3.2 31 54 -13 -39 23 43 -39 38 47 -39 21 25 -39 41 5 0.39 - 21 0 0 -39 12 0 20 41 59.4 32 53 -14 -39 4 27 -39 19 33 -39 2 9 -39 21 51 0.39 - 20 0 0 -38 52 22 20 41 55.5 33 52 -15 -38 44 49 -38 59 57 -38 42 30 -39 2 15 0.39 - 19 0 0 -38 32 24 20 41 51.4 33 52 -16 -38 24 49 -38 39 59 -38 22 30 -38 42 18 0.39 - 18 0 0 -38 12 3 20 41 47.3 34 51 -17 -38 4 27 -38 19 40 -38 2 9 -38 21 59 0.39 - 17 0 0 -37 51 21 20 41 43.1 35 50 -18 -37 43 45 -37 58 59 -37 41 26 -38 1 18 0.39 - 16 0 0 -37 30 18 20 41 38.7 36 49 -18 -37 22 41 -37 37 57 -37 20 21 -37 40 16 0.39 - 15 0 0 -37 8 54 20 41 34.2 37 49 -19 -37 1 16 -37 16 33 -36 58 56 -37 18 53 0.39 - 14 0 0 -36 47 9 20 41 29.6 38 48 -20 -36 39 30 -36 54 49 -36 37 10 -36 57 9 0.39 - 13 0 0 -36 25 3 20 41 24.9 38 47 -21 -36 17 23 -36 32 44 -36 15 3 -36 35 5 0.39 - 12 0 0 -36 2 37 20 41 20.1 39 46 -22 -35 54 56 -36 10 19 -35 52 36 -36 12 40 0.39 - 11 0 0 -35 39 51 20 41 15.1 40 46 -23 -35 32 9 -35 47 33 -35 29 48 -35 49 54 0.39 - 10 0 0 -35 16 45 20 41 10.1 41 45 -24 -35 9 2 -35 24 28 -35 6 41 -35 26 49 0.39 - 9 0 0 -34 53 18 20 41 4.9 42 44 -25 -34 45 35 -35 1 3 -34 43 14 -35 3 24 0.39 - 8 0 0 -34 29 33 20 40 59.6 43 43 -25 -34 21 49 -34 37 18 -34 19 27 -34 39 40 0.39 - 7 0 0 -34 5 29 20 40 54.1 43 42 -26 -33 57 44 -34 13 14 -33 55 22 -34 15 36 0.39 - 6 0 0 -33 41 6 20 40 48.6 44 41 -27 -33 33 20 -33 48 52 -33 30 58 -33 51 14 0.39 - 5 0 0 -33 16 24 20 40 43.0 45 40 -28 -33 8 38 -33 24 11 -33 6 16 -33 26 33 0.39 - 4 0 0 -32 51 25 20 40 37.2 46 40 -29 -32 43 37 -32 59 12 -32 41 15 -33 1 35 0.39 - 3 0 0 -32 26 8 20 40 31.3 47 39 -30 -32 18 20 -32 33 56 -32 15 57 -32 36 19 0.39 - 2 0 0 -32 0 34 20 40 25.3 48 38 -31 -31 52 45 -32 8 23 -31 50 23 -32 10 45 0.39 - 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0 28 22 - 0 47 19 0.38 70 0 0 - 0 19 44 20 31 7.1 45 275 -69 - 0 12 29 - 0 27 0 - 0 10 17 - 0 29 12 0.38 71 0 0 - 0 2 4 20 31 0.9 44 275 -68 0 5 10 - 0 9 19 0 7 22 - 0 11 31 0.38 72 0 0 0 15 10 20 30 54.7 43 275 -67 0 22 24 0 7 57 0 24 36 0 5 45 0.38 73 0 0 0 31 59 20 30 48.7 42 274 -66 0 39 12 0 24 46 0 41 23 0 22 34 0.38 74 0 0 0 48 21 20 30 42.8 41 274 -65 0 55 33 0 41 9 0 57 45 0 38 58 0.38 75 0 0 1 4 17 20 30 37.1 40 274 -64 1 11 28 0 57 6 1 13 40 0 54 55 0.38 76 0 0 1 19 47 20 30 31.4 39 274 -63 1 26 57 1 12 36 1 29 8 1 10 25 0.39 77 0 0 1 34 50 20 30 25.9 38 273 -62 1 41 59 1 27 40 1 44 10 1 25 29 0.39 78 0 0 1 49 25 20 30 20.5 37 273 -62 1 56 34 1 42 16 1 58 45 1 40 5 0.39 79 0 0 2 3 34 20 30 15.3 36 273 -61 2 10 42 1 56 26 2 12 52 1 54 15 0.39 80 0 0 2 17 15 20 30 10.1 35 273 -60 2 24 23 2 10 8 2 26 33 2 7 57 0.39 81 0 0 2 30 29 20 30 5.1 34 273 -59 2 37 36 2 23 22 2 39 46 2 21 12 0.39 82 0 0 2 43 16 20 30 0.2 33 273 -58 2 50 22 2 36 9 2 52 32 2 33 59 0.39 83 0 0 2 55 35 20 29 55.5 32 272 -57 3 2 40 2 48 29 3 4 49 2 46 19 0.39 84 0 0 3 7 25 20 29 50.9 31 272 -56 3 14 30 3 0 20 3 16 40 2 58 11 0.39 85 0 0 3 18 48 20 29 46.4 30 272 -55 3 25 53 3 11 44 3 28 2 3 9 35 0.39 86 0 0 3 29 43 20 29 42.0 29 272 -54 3 36 47 3 22 39 3 38 56 3 20 30 0.39 87 0 0 3 40 10 20 29 37.8 28 272 -53 3 47 13 3 33 7 3 49 22 3 30 58 0.39 88 0 0 3 50 9 20 29 33.7 27 272 -52 3 57 11 3 43 6 3 59 20 3 40 57 0.39 89 0 0 3 59 39 20 29 29.8 26 272 -51 4 6 41 3 52 36 4 8 49 3 50 28 0.39 90 0 0 4 8 40 20 29 26.0 25 272 -50 4 15 42 4 1 38 4 17 50 3 59 30 0.39 91 0 0 4 17 13 20 29 22.3 24 272 -49 4 24 15 4 10 12 4 26 23 4 8 3 0.39 92 0 0 4 25 18 20 29 18.8 23 272 -48 4 32 18 4 18 16 4 34 27 4 16 8 0.39 93 0 0 4 32 53 20 29 15.4 22 272 -47 4 39 54 4 25 52 4 42 2 4 23 44 0.39 94 0 0 4 40 0 20 29 12.1 21 272 -46 4 47 0 4 32 59 4 49 8 4 30 51 0.39 95 0 0 4 46 37 20 29 9.0 20 272 -45 4 53 37 4 39 37 4 55 45 4 37 29 0.39 96 0 0 4 52 46 20 29 6.0 19 272 -44 4 59 46 4 45 47 5 1 53 4 43 39 0.39 97 0 0 4 58 26 20 29 3.2 18 272 -43 5 5 25 4 51 26 5 7 33 4 49 19 0.39 98 0 0 5 3 36 20 29 0.5 17 272 -42 5 10 35 4 56 37 5 12 43 4 54 29 0.40 99 0 0 5 8 18 20 28 58.0 16 272 -41 5 15 16 5 1 19 5 17 24 4 59 11 0.40 100 0 0 5 12 29 20 28 55.6 15 272 -40 5 19 28 5 5 31 5 21 35 5 3 23 0.40 101 0 0 5 16 12 20 28 53.3 15 272 -39 5 23 10 5 9 13 5 25 18 5 7 6 0.40 102 0 0 5 19 25 20 28 51.2 14 272 -38 5 26 23 5 12 27 5 28 31 5 10 19 0.40 103 0 0 5 22 9 20 28 49.3 13 273 -37 5 29 7 5 15 10 5 31 14 5 13 3 0.40 104 0 0 5 24 23 20 28 47.4 12 273 -36 5 31 21 5 17 24 5 33 28 5 15 17 0.40 105 0 0 5 26 7 20 28 45.8 11 273 -35 5 33 5 5 19 9 5 35 12 5 17 1 0.40 106 0 0 5 27 22 20 28 44.2 10 273 -34 5 34 20 5 20 24 5 36 27 5 18 16 0.41 107 0 0 5 28 7 20 28 42.9 9 273 -33 5 35 5 5 21 9 5 37 12 5 19 1 0.41 108 0 0 5 28 22 20 28 41.6 8 273 -32 5 35 20 5 21 24 5 37 27 5 19 16 0.41 109 0 0 5 28 7 20 28 40.5 7 273 -31 5 35 5 5 21 9 5 37 12 5 19 1 0.41 110 0 0 5 27 23 20 28 39.6 6 273 -30 5 34 21 5 20 24 5 36 28 5 18 17 0.42 111 0 0 5 26 8 20 28 38.8 5 273 -29 5 33 6 5 19 9 5 35 13 5 17 2 0.43 112 0 0 5 24 23 20 28 38.2 4 273 -28 5 31 22 5 17 25 5 33 29 5 15 17 0.44 113 0 0 5 22 9 20 28 37.7 3 273 -27 5 29 7 5 15 10 5 31 14 5 13 2 0.46 114 0 0 5 19 24 20 28 37.4 2 273 -26 5 26 22 5 12 25 5 28 30 5 10 17 0.50 115 0 0 5 16 9 20 28 37.2 1 274 -25 5 23 8 5 9 10 5 25 15 5 7 2 0.66 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 468-140041 * constellation : Pisces * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 23 00 44.4614 DE: +03 29 37.145 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 23 00 44.4612 DE: +03 29 37.145 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.7 * B mag [mag]: 12.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2103) Laverna asteroid class: approx. diameter [km]: 24 approx. diameter ["]: 0.012 distance from Earth [AU]: 2.80900 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#54 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): 0.018", 0.002", 61.918° remarks: * orbital elements for (2103)Laverna : Mean anomaly = 186.1100324294 deg Arg. of pericenter = 237.7488658323 deg Long. of node = 292.0257484425 deg Inclination = 7.6946273510 deg Eccentricity = 0.1918845177 Semimajor axis = 3.1410979415 AU Perihelion dist = 2.5383698781 AU Mag: H = 11.07, G = 0.15 Epoch of elements : MJD 60586.85829505 TDT (2024 Oct 03.8583) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr24,1.77,2024,10,3,20.599081,0.160433,-0.322410,-6.842568,-3.383908,0.002480,0.000118,0.000001,0.000001 23.4812,3.6284,-131.79,-4.40,False UCAC4 468-140041,23.01235039,3.4936514,12.23,11.72,11.44,0.0,0,,23.03360638,3.6283907,4.95,4.78,0,0,0 2103,Laverna,16.66,23.967,2.8090,0,0,-1.431,-10.59,,1.8,0 0,185.9581,2024,10,3,237.7489,292.0257,7.6946,0.19188,3.14110,2.53837,11.06,5.0,0.15 1.152,0.0180,0.0017,62,0.0018,Known errors,0.92,0,-1,-1 20241003_140041,60140.61 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:35 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org