IOTA/IOTA-ES occultation update for (5625) Jamesferguson / UCAC4 382-130168 event on 2024 Oct 15, 22:20 UT Visible from Summary ------- On 2024 Oct 15 UT, the 14.8178925926232 km diameter asteroid (5625) Jamesferguson will occult a 10.8 mag star in the constellation Scutum for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.50 mag to 18.27 mag (the magnitude of the asteroid) for at most 0.680 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: 98 * date and approx. time of event: 2024 Oct 15, 22:15 - 2024 Oct 15, 22:25 * geocentric midpoint of event [JD]: 2460599.43106929 * magnitude of target star: 10.77 * magnitude drop [mag]: 7.50 * estimated maximum duration [s]: 0.680 * Moon: 96 % sunlit, 77° distance * Sun: 81° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 15 * 1 sigma uncertainty interval [path widths]: +/- 0.35 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.002", 91°) * approx speed of asteroid's shadow [km/s]: 21.9152 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 382-130168 by 5625 Jamesferguson on 2024 Oct 15 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 -164 0 0 - 1 30 23 22 15 59.5 1 104 80 - 1 34 40 - 1 26 6 - 1 37 43 - 1 23 4 .... -163 0 0 - 1 45 20 22 15 59.6 2 104 81 - 1 49 38 - 1 41 3 - 1 52 40 - 1 38 1 0.20 -162 0 0 - 2 0 30 22 15 59.9 3 104 82 - 2 4 48 - 1 56 13 - 2 7 51 - 1 53 10 0.21 -161 0 0 - 2 15 53 22 16 0.2 4 104 82 - 2 20 11 - 2 11 35 - 2 23 13 - 2 8 33 0.21 -160 0 0 - 2 31 28 22 16 0.6 5 103 83 - 2 35 46 - 2 27 10 - 2 38 48 - 2 24 7 0.21 -159 0 0 - 2 47 14 22 16 1.1 6 103 84 - 2 51 32 - 2 42 56 - 2 54 35 - 2 39 53 0.21 -158 0 0 - 3 3 12 22 16 1.8 7 103 84 - 3 7 31 - 2 58 54 - 3 10 34 - 2 55 51 0.21 -157 0 0 - 3 19 22 22 16 2.5 8 103 84 - 3 23 40 - 3 15 3 - 3 26 44 - 3 12 0 0.21 -156 0 0 - 3 35 42 22 16 3.3 9 103 84 - 3 40 1 - 3 31 23 - 3 43 5 - 3 28 20 0.21 -155 0 0 - 3 52 13 22 16 4.2 10 103 84 - 3 56 33 - 3 47 54 - 3 59 36 - 3 44 51 0.21 -154 0 0 - 4 8 55 22 16 5.2 11 103 84 - 4 13 14 - 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1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.011", 0.002", 90.761° remarks: * orbital elements for (5625)Jamesferguson : Mean anomaly = 295.5049611547 deg Arg. of pericenter = 217.6017830164 deg Long. of node = 174.7976410261 deg Inclination = 11.9685988414 deg Eccentricity = 0.1926467083 Semimajor axis = 2.6743862452 AU Perihelion dist = 2.1591745384 AU Mag: H = 13.18, G = 0.15 Epoch of elements : MJD 60598.93106921 TDT (2024 Oct 15.9311) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#482023Apr25,0.68,2024,10,15,22.345663,-0.037272,-0.202080,12.160623,-2.263700,0.005548,0.000699,0.000000,0.000000 -75.7856,-13.6309,-158.79,-8.96,False UCAC4 382-130168,18.93247440,-13.6627693,11.32,10.77,10.47,0.1,0,,18.95570048,-13.6308726,7.50,7.35,0,0,0 5625,Jamesferguson,18.27,14.999,2.4971,0,0,2.938,-7.97,,1.4,0 0,295.2951,2024,10,15,217.6018,174.7976,11.9686,0.19265,2.67439,2.15917,13.17,5.0,0.15 1.354,0.0107,0.0023,91,0.0029,Known errors,0.92,0,-1,-1 20241015_130168,60140.64 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:17 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org