IOTA/IOTA-ES occultation update for (2316) Jo-Ann / HIP 54109 event on 2024 Dec 11, 04:03 UT Visible from Summary ------- On 2024 Dec 11 UT, the 13.9446868950516 km diameter asteroid (2316) Jo-Ann will occult a 8.1 mag star in the constellation Leo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 10.23 mag to 18.33 mag (the magnitude of the asteroid) for at most 1.050 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: 65 * date and approx. time of event: 2024 Dec 11, 03:55 - 2024 Dec 11, 04:11 * geocentric midpoint of event [JD]: 2460655.66924721 * magnitude of target star: 8.10 * magnitude drop [mag]: 10.23 * estimated maximum duration [s]: 1.050 * Moon: 77 % sunlit, 143° distance * Sun: 94° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 14 * 1 sigma uncertainty interval [path widths]: +/- 0.93 * 1 sigma uncertainty interval [seconds]: +/- 2.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.007", 117°) * approx speed of asteroid's shadow [km/s]: 13.4562 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 54109 by 2316 Jo-Ann on 2024 Dec 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 - 65 0 0 21 55 53 3 55 51.7 0 84 -85 21 52 2 21 59 44 21 44 54 22 6 53 .... - 64 0 0 22 1 38 3 55 51.8 1 84 -86 21 57 47 22 5 29 21 50 39 22 12 37 -0.04 - 63 0 0 22 7 1 3 55 52.0 2 85 -87 22 3 10 22 10 52 21 56 2 22 18 0 -0.03 - 62 0 0 22 12 3 3 55 52.4 3 85 -88 22 8 12 22 15 54 22 1 5 22 23 1 -0.03 - 61 0 0 22 16 44 3 55 52.8 4 85 -88 22 12 53 22 20 34 22 5 46 22 27 42 -0.03 - 60 0 0 22 21 3 3 55 53.4 5 86 -88 22 17 13 22 24 54 22 10 6 22 32 1 -0.03 - 59 0 0 22 25 2 3 55 54.1 6 86 -88 22 21 12 22 28 52 22 14 5 22 35 59 -0.02 - 58 0 0 22 28 39 3 55 55.0 7 87 -87 22 24 49 22 32 29 22 17 42 22 39 36 -0.02 - 57 0 0 22 31 54 3 55 55.9 8 87 -86 22 28 4 22 35 45 22 20 58 22 42 51 -0.02 - 56 0 0 22 34 49 3 55 57.0 9 87 -85 22 30 59 22 38 39 22 23 52 22 45 45 -0.02 - 55 0 0 22 37 21 3 55 58.2 9 88 -84 22 33 31 22 41 11 22 26 25 22 48 18 -0.02 - 54 0 0 22 39 33 3 55 59.6 10 88 -84 22 35 43 22 43 22 22 28 36 22 50 29 -0.02 - 53 0 0 22 41 22 3 56 1.0 11 89 -83 22 37 32 22 45 12 22 30 26 22 52 18 -0.02 - 52 0 0 22 42 50 3 56 2.6 12 89 -82 22 39 1 22 46 40 22 31 55 22 53 46 -0.02 - 51 0 0 22 43 57 3 56 4.3 13 89 -81 22 40 7 22 47 47 22 33 1 22 54 53 -0.02 - 50 0 0 22 44 42 3 56 6.1 14 90 -80 22 40 52 22 48 31 22 33 46 22 55 37 -0.02 - 49 0 0 22 45 5 3 56 8.1 15 90 -79 22 41 15 22 48 54 22 34 9 22 56 0 -0.02 - 48 0 0 22 45 6 3 56 10.1 16 90 -78 22 41 16 22 48 56 22 34 10 22 56 2 -0.02 - 47 0 0 22 44 46 3 56 12.3 17 91 -77 22 40 56 22 48 35 22 33 50 22 55 41 -0.02 - 46 0 0 22 44 4 3 56 14.6 18 91 -76 22 40 14 22 47 53 22 33 8 22 54 59 -0.02 - 45 0 0 22 43 0 3 56 17.0 19 92 -75 22 39 10 22 46 49 22 32 4 22 53 55 -0.02 - 44 0 0 22 41 34 3 56 19.6 20 92 -74 22 37 44 22 45 23 22 30 38 22 52 30 -0.02 - 43 0 0 22 39 46 3 56 22.2 21 92 -74 22 35 56 22 43 36 22 28 50 22 50 42 -0.02 - 42 0 0 22 37 36 3 56 25.0 22 93 -73 22 33 46 22 41 26 22 26 40 22 48 33 -0.02 - 41 0 0 22 35 5 3 56 27.9 23 93 -72 22 31 15 22 38 55 22 24 8 22 46 1 -0.02 - 40 0 0 22 32 11 3 56 31.0 23 94 -71 22 28 21 22 36 1 22 21 14 22 43 8 -0.02 - 39 0 0 22 28 56 3 56 34.1 24 94 -70 22 25 5 22 32 46 22 17 59 22 39 53 -0.02 - 38 0 0 22 25 18 3 56 37.4 25 94 -69 22 21 28 22 29 8 22 14 21 22 36 15 -0.02 - 37 0 0 22 21 18 3 56 40.8 26 95 -68 22 17 28 22 25 9 22 10 21 22 32 16 -0.02 - 36 0 0 22 16 57 3 56 44.3 27 95 -67 22 13 6 22 20 47 22 5 59 22 27 55 -0.02 - 35 0 0 22 12 13 3 56 47.9 28 96 -66 22 8 23 22 16 4 22 1 15 22 23 11 -0.02 - 34 0 0 22 7 7 3 56 51.7 29 96 -65 22 3 17 22 10 58 21 56 9 22 18 6 -0.02 - 33 0 0 22 1 40 3 56 55.5 30 96 -64 21 57 49 22 5 30 21 50 41 22 12 39 -0.02 - 32 0 0 21 55 50 3 56 59.5 31 97 -63 21 51 59 21 59 41 21 44 50 22 6 49 -0.02 - 31 0 0 21 49 38 3 57 3.6 32 97 -62 21 45 46 21 53 29 21 38 38 22 0 38 -0.01 - 30 0 0 21 43 4 3 57 7.8 33 97 -61 21 39 12 21 46 55 21 32 3 21 54 4 -0.01 - 29 0 0 21 36 7 3 57 12.2 34 98 -60 21 32 16 21 39 59 21 25 6 21 47 8 -0.01 - 28 0 0 21 28 49 3 57 16.6 35 98 -59 21 24 57 21 32 41 21 17 47 21 39 51 -0.01 - 27 0 0 21 21 9 3 57 21.2 36 99 -58 21 17 17 21 25 1 21 10 6 21 32 11 -0.01 - 26 0 0 21 13 6 3 57 25.9 37 99 -58 21 9 14 21 16 58 21 2 3 21 24 9 -0.01 - 25 0 0 21 4 42 3 57 30.7 38 99 -57 21 0 49 21 8 34 20 53 38 21 15 45 -0.01 - 24 0 0 20 55 55 3 57 35.7 39 100 -56 20 52 2 20 59 47 20 44 51 21 6 59 -0.01 - 23 0 0 20 46 46 3 57 40.7 40 100 -55 20 42 53 20 50 39 20 35 42 20 57 51 -0.01 - 22 0 0 20 37 16 3 57 45.9 41 100 -54 20 33 22 20 41 9 20 26 10 20 48 21 -0.01 - 21 0 0 20 27 23 3 57 51.2 42 101 -53 20 23 29 20 31 16 20 16 17 20 38 29 -0.01 - 20 0 0 20 17 8 3 57 56.5 43 101 -52 20 13 15 20 21 2 20 6 1 20 28 15 -0.01 - 19 0 0 20 6 32 3 58 2.1 44 102 -51 20 2 38 20 10 26 19 55 24 20 17 39 -0.01 - 18 0 0 19 55 33 3 58 7.7 44 102 -50 19 51 39 19 59 28 19 44 25 20 6 42 -0.01 - 17 0 0 19 44 13 3 58 13.4 45 102 -49 19 40 19 19 48 8 19 33 4 19 55 22 -0.01 - 16 0 0 19 32 31 3 58 19.3 46 103 -48 19 28 37 19 36 26 19 21 21 19 43 41 -0.01 - 15 0 0 19 20 28 3 58 25.3 47 103 -47 19 16 33 19 24 23 19 9 17 19 31 39 -0.01 - 14 0 0 19 8 3 3 58 31.3 48 103 -46 19 4 7 19 11 58 18 56 51 19 19 14 -0.01 - 13 0 0 18 55 16 3 58 37.5 49 104 -45 18 51 20 18 59 12 18 44 3 19 6 28 -0.01 - 12 0 0 18 42 8 3 58 43.8 50 104 -44 18 38 12 18 46 4 18 30 54 18 53 21 -0.01 - 11 0 0 18 28 38 3 58 50.3 51 104 -43 18 24 42 18 32 35 18 17 24 18 39 53 -0.01 - 10 0 0 18 14 48 3 58 56.8 52 105 -42 18 10 51 18 18 44 18 3 32 18 26 3 -0.01 - 9 0 0 18 0 36 3 59 3.4 53 105 -41 17 56 39 18 4 33 17 49 20 18 11 52 -0.01 - 8 0 0 17 46 3 3 59 10.2 54 106 -40 17 42 6 17 50 0 17 34 46 17 57 20 -0.01 - 7 0 0 17 31 10 3 59 17.0 55 106 -39 17 27 12 17 35 7 17 19 52 17 42 28 -0.01 - 6 0 0 17 15 55 3 59 24.0 56 106 -38 17 11 57 17 19 53 17 4 36 17 27 14 -0.01 - 5 0 0 17 0 21 3 59 31.0 57 107 -37 16 56 22 17 4 19 16 49 1 17 11 41 -0.01 - 4 0 0 16 44 25 3 59 38.2 59 107 -36 16 40 27 16 48 24 16 33 4 16 55 46 -0.01 - 3 0 0 16 28 10 3 59 45.4 60 107 -35 16 24 11 16 32 9 16 16 48 16 39 32 -0.01 - 2 0 0 16 11 35 3 59 52.8 61 108 -34 16 7 35 16 15 34 16 0 12 16 22 58 -0.01 - 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1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.015", 0.007", 116.782° remarks: * orbital elements for (2316)Jo-Ann : Mean anomaly = 218.6587549606 deg Arg. of pericenter = 147.3535140558 deg Long. of node = 148.6254358959 deg Inclination = 1.8178014906 deg Eccentricity = 0.1680300419 Semimajor axis = 2.4498809327 AU Perihelion dist = 2.0382273369 AU Mag: H = 13.06, G = 0.15 Epoch of elements : MJD 60655.16924734 TDT (2024 Dec 11.1692) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#572023Feb11,1.05,2024,12,11,4.061933,0.002048,0.019721,7.100410,-2.696123,-0.005443,0.002282,0.000000,0.000000 25.1036,5.6617,117.40,-23.03,False HIP 54109,11.07178609,5.7960426,8.41,8.10,7.93,0.1,0,,11.09333289,5.6617232,10.23,9.95,0,0,0 2316,Jo-Ann,18.33,14.129,2.5413,0,0,1.646,-9.33,,1.0,0 0,218.6153,2024,12,11,147.3535,148.6254,1.8178,0.16803,2.44988,2.03823,13.06,5.0,0.15 1.927,0.0147,0.0070,117,0.0071,Known errors,0.91,0,-1,-1 20241211__54109,60140.74 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:39 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org