IOTA/IOTA-ES occultation update for (42479) Tolik / UCAC4 333-134002 event on 2024 Mar 08, 03:12 UT Visible from Summary ------- On 2024 Mar 08 UT, the 11.759 km diameter asteroid (42479) Tolik will occult a 11.9 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.16 mag to 19.06 mag (the magnitude of the asteroid) for at most 0.480 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 Mar 08, 03:07 - 2024 Mar 08, 03:16 * geocentric midpoint of event [JD]: 2460377.63339492 * magnitude of target star: 11.90 * magnitude drop [mag]: 7.16 * estimated maximum duration [s]: 0.480 * Moon: 7 % sunlit, 47° distance * Sun: 78° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 12 * 1 sigma uncertainty interval [path widths]: +/- 0.22 * 1 sigma uncertainty interval [seconds]: +/- 1.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.001", 96°) * approx speed of asteroid's shadow [km/s]: 24.7482 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 333-134002 by 42479 Tolik on 2024 Mar 8 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 - 24 0 0 18 0 9 3 7 56.7 1 115 -66 17 56 31 18 3 47 17 54 56 18 5 22 .... - 23 0 0 17 33 25 3 7 56.8 2 115 -66 17 29 47 17 37 4 17 28 13 17 38 38 -0.09 - 22 0 0 17 6 36 3 7 57.0 3 116 -65 17 2 58 17 10 15 17 1 23 17 11 49 -0.16 - 21 0 0 16 39 42 3 7 57.3 4 116 -64 16 36 4 16 43 20 16 34 29 16 44 55 -0.19 - 20 0 0 16 12 44 3 7 57.6 5 116 -64 16 9 5 16 16 22 16 7 31 16 17 57 -0.20 - 19 0 0 15 45 41 3 7 58.1 6 117 -63 15 42 3 15 49 19 15 40 28 15 50 54 -0.21 - 18 0 0 15 18 36 3 7 58.7 7 117 -62 15 14 58 15 22 14 15 13 23 15 23 49 -0.22 - 17 0 0 14 51 28 3 7 59.3 8 117 -61 14 47 50 14 55 6 14 46 15 14 56 41 -0.23 - 16 0 0 14 24 19 3 8 0.0 9 117 -60 14 20 40 14 27 57 14 19 6 14 29 32 -0.23 - 15 0 0 13 57 8 3 8 0.9 10 118 -60 13 53 30 14 0 46 13 51 56 14 2 21 -0.23 - 14 0 0 13 29 58 3 8 1.8 11 118 -59 13 26 20 13 33 36 13 24 45 13 35 11 -0.24 - 13 0 0 13 2 48 3 8 2.8 12 118 -58 12 59 10 13 6 26 12 57 35 13 8 1 -0.24 - 12 0 0 12 35 39 3 8 4.0 13 118 -57 12 32 1 12 39 17 12 30 27 12 40 52 -0.24 - 11 0 0 12 8 32 3 8 5.2 14 119 -56 12 4 55 12 12 10 12 3 20 12 13 45 -0.24 - 10 0 0 11 41 28 3 8 6.5 16 119 -55 11 37 51 11 45 6 11 36 16 11 46 41 -0.24 - 9 0 0 11 14 28 3 8 7.9 17 119 -54 11 10 50 11 18 5 11 9 16 11 19 40 -0.25 - 8 0 0 10 47 31 3 8 9.4 18 119 -54 10 43 54 10 51 9 10 42 20 10 52 43 -0.25 - 7 0 0 10 20 40 3 8 10.9 19 119 -53 10 17 3 10 24 17 10 15 29 10 25 51 -0.25 - 6 0 0 9 53 54 3 8 12.6 20 120 -52 9 50 17 9 57 31 9 48 43 9 59 5 -0.25 - 5 0 0 9 27 14 3 8 14.4 21 120 -51 9 23 38 9 30 51 9 22 4 9 32 25 -0.25 - 4 0 0 9 0 42 3 8 16.2 22 120 -50 8 57 5 9 4 18 8 55 31 9 5 53 -0.25 - 3 0 0 8 34 17 3 8 18.2 23 120 -49 8 30 41 8 37 53 8 29 7 8 39 27 -0.25 - 2 0 0 8 8 1 3 8 20.2 24 120 -48 8 4 25 8 11 37 8 2 51 8 13 11 -0.25 - 1 0 0 7 41 53 3 8 22.3 25 121 -47 7 38 17 7 45 29 7 36 44 7 47 3 -0.25 - 0 0 0 7 15 56 3 8 24.6 26 121 -46 7 12 20 7 19 31 7 10 47 7 21 5 -0.25 1 0 0 6 50 9 3 8 26.8 27 121 -45 6 46 33 6 53 44 6 45 0 6 55 18 -0.25 2 0 0 6 24 33 3 8 29.2 29 121 -44 6 20 58 6 28 8 6 19 24 6 29 41 -0.25 3 0 0 5 59 9 3 8 31.7 30 121 -43 5 55 34 6 2 44 5 54 1 6 4 17 -0.25 4 0 0 5 33 57 3 8 34.2 31 122 -42 5 30 23 5 37 32 5 28 49 5 39 5 -0.26 5 0 0 5 8 58 3 8 36.9 32 122 -41 5 5 24 5 12 33 5 3 51 5 14 6 -0.26 6 0 0 4 44 13 3 8 39.6 33 122 -40 4 40 39 4 47 47 4 39 6 4 49 20 -0.26 7 0 0 4 19 42 3 8 42.4 34 122 -39 4 16 9 4 23 16 4 14 36 4 24 49 -0.26 8 0 0 3 55 27 3 8 45.2 35 122 -38 3 51 53 3 59 0 3 50 21 4 0 33 -0.26 9 0 0 3 31 26 3 8 48.2 36 123 -37 3 27 53 3 34 59 3 26 21 3 36 32 -0.26 10 0 0 3 7 41 3 8 51.2 37 123 -36 3 4 9 3 11 14 3 2 37 3 12 47 -0.26 11 0 0 2 44 13 3 8 54.2 38 123 -35 2 40 41 2 47 46 2 39 9 2 49 18 -0.26 12 0 0 2 21 2 3 8 57.4 39 123 -34 2 17 31 2 24 34 2 15 58 2 26 7 -0.26 13 0 0 1 58 9 3 9 0.6 40 124 -32 1 54 37 2 1 41 1 53 6 2 3 13 -0.26 14 0 0 1 35 34 3 9 3.9 41 124 -31 1 32 2 1 39 5 1 30 31 1 40 37 -0.26 15 0 0 1 13 17 3 9 7.3 42 124 -30 1 9 46 1 16 48 1 8 14 1 18 19 -0.26 16 0 0 0 51 19 3 9 10.7 43 124 -29 0 47 49 0 54 50 0 46 17 0 56 21 -0.26 17 0 0 0 29 41 3 9 14.2 44 125 -28 0 26 11 0 33 11 0 24 39 0 34 42 -0.26 18 0 0 0 8 22 3 9 17.7 45 125 -27 0 4 52 0 11 52 0 3 21 0 13 23 -0.26 19 0 0 - 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6 31 59 - 6 40 10 - 6 30 31 -0.27 94 0 0 - 6 23 49 3 14 39.9 49 241 50 - 6 27 10 - 6 20 27 - 6 28 38 - 6 18 59 -0.27 95 0 0 - 6 11 50 3 14 43.5 48 241 51 - 6 15 13 - 6 8 28 - 6 16 40 - 6 7 1 -0.27 96 0 0 - 5 59 27 3 14 47.1 47 241 52 - 6 2 49 - 5 56 4 - 6 4 17 - 5 54 36 -0.27 97 0 0 - 5 46 37 3 14 50.6 46 242 53 - 5 50 0 - 5 43 15 - 5 51 28 - 5 41 46 -0.27 98 0 0 - 5 33 22 3 14 54.0 45 242 54 - 5 36 45 - 5 29 59 - 5 38 13 - 5 28 31 -0.27 99 0 0 - 5 19 42 3 14 57.4 44 242 55 - 5 23 5 - 5 16 19 - 5 24 34 - 5 14 50 -0.27 100 0 0 - 5 5 37 3 15 0.7 43 242 56 - 5 9 0 - 5 2 13 - 5 10 29 - 5 0 44 -0.27 101 0 0 - 4 51 6 3 15 4.0 42 242 57 - 4 54 30 - 4 47 42 - 4 55 59 - 4 46 14 -0.27 102 0 0 - 4 36 11 3 15 7.3 41 242 58 - 4 39 35 - 4 32 47 - 4 41 4 - 4 31 18 -0.27 103 0 0 - 4 20 51 3 15 10.4 40 243 59 - 4 24 16 - 4 17 27 - 4 25 44 - 4 15 58 -0.27 104 0 0 - 4 5 7 3 15 13.5 39 243 60 - 4 8 32 - 4 1 42 - 4 10 1 - 4 0 13 -0.27 105 0 0 - 3 48 58 3 15 16.6 38 243 61 - 3 52 23 - 3 45 33 - 3 53 53 - 3 44 4 -0.27 106 0 0 - 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1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.014", 0.001", 96.4° remarks: * orbital elements for (42479)Tolik : Mean anomaly = 284.3599945906 deg Arg. of pericenter = 270.2618980352 deg Long. of node = 67.3726548957 deg Inclination = 6.5452542147 deg Eccentricity = 0.1182981520 Semimajor axis = 2.6743390583 AU Perihelion dist = 2.3579696899 AU Mag: H = 13.78, G = 0.15 Epoch of elements : MJD 60377.13339484 TDT (2024 Mar 08.1334) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#482023Apr25,0.48,2024,3,8,3.201478,0.021249,0.259457,13.919881,-1.165136,-0.005679,-0.000018,0.000000,0.000000 56.1227,-23.5669,134.66,-4.73,False UCAC4 333-134002,18.00669257,-23.5650183,12.42,11.90,11.62,0.0,0,,18.03108508,-23.5669088,7.16,6.99,0,0,1 42479,Tolik,19.06,11.759,2.6601,0,0,3.348,-3.85,,0.8,0 0,284.3299,2024,3,8,270.2619,67.3727,6.5453,0.11830,2.67434,2.35797,13.78,5.0,0.15 1.217,0.0137,0.0013,96,0.0013,Known errors,0.81,0,-1,-1 20240308_134002,60139.22 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 05:15 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org