IOTA/IOTA-ES occultation update for (9414) Masamimurakami / TYC 6204-00061-1 event on 2024 Jan 11, 15:24 UT Visible from Summary ------- On 2024 Jan 11 UT, the 12.491 km diameter asteroid (9414) Masamimurakami will occult a 11.3 mag star in the constellation Libra for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.07 mag to 17.41 mag (the magnitude of the asteroid) for at most 0.310 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 Jan 11, 15:22 - 2024 Jan 11, 15:27 * geocentric midpoint of event [JD]: 2460321.14224812 * magnitude of target star: 11.34 * magnitude drop [mag]: 6.07 * estimated maximum duration [s]: 0.310 * Moon: 0 % sunlit, 51° distance * Sun: 49° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 13 * 1 sigma uncertainty interval [path widths]: +/- 0.27 * 1 sigma uncertainty interval [seconds]: +/- 0.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.001", 114°) * approx speed of asteroid's shadow [km/s]: 40.3946 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6204-00061-1 by 9414 Masamimurakami on 2024 Jan 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 179 0 0 27 5 9 15 22 15.7 0 110 -47 27 1 28 27 8 50 26 59 27 27 10 50 .... -180 0 0 26 45 3 15 22 15.7 1 111 -46 26 41 22 26 48 45 26 39 21 26 50 45 -0.01 -179 0 0 26 24 38 15 22 15.8 2 111 -45 26 20 56 26 28 20 26 18 55 26 30 20 -0.10 -178 0 0 26 3 53 15 22 15.9 3 112 -44 26 0 11 26 7 35 25 58 10 26 9 36 -0.13 -177 0 0 25 42 48 15 22 16.1 4 112 -43 25 39 6 25 46 31 25 37 5 25 48 32 -0.15 -176 0 0 25 21 25 15 22 16.3 5 113 -42 25 17 42 25 25 8 25 15 41 25 27 9 -0.16 -175 0 0 24 59 43 15 22 16.5 6 113 -41 24 55 59 25 3 26 24 53 58 25 5 28 -0.17 -174 0 0 24 37 42 15 22 16.8 7 113 -40 24 33 58 24 41 26 24 31 57 24 43 27 -0.17 -173 0 0 24 15 23 15 22 17.2 8 114 -39 24 11 39 24 19 7 24 9 37 24 21 9 -0.18 -172 0 0 23 52 46 15 22 17.6 9 114 -38 23 49 2 23 56 30 23 47 0 23 58 32 -0.18 -171 0 0 23 29 51 15 22 18.1 10 115 -37 23 26 7 23 33 36 23 24 4 23 35 38 -0.18 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2 24 -0.21 - 11 0 0 - 4 48 44 15 27 24.7 1 252 49 - 4 52 22 - 4 45 6 - 4 54 21 - 4 43 7 -0.20 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: TYC 6204-00061-1 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 16 00 32.3709 DE: -17 56 00.429 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 16 00 32.3710 DE: -17 56 00.429 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.3 * B mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (9414) Masamimurakami asteroid class: approx. diameter [km]: 12 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.60870 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#47 date of fit: 2023 Apr 25 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): 0.011", 0.001", 114.448° remarks: * orbital elements for (9414)Masamimurakami : Mean anomaly = 346.4702810835 deg Arg. of pericenter = 182.4081712849 deg Long. of node = 56.2378048918 deg Inclination = 12.1948876682 deg Eccentricity = 0.1389855014 Semimajor axis = 2.4218816403 AU Perihelion dist = 2.0852752061 AU Mag: H = 12.71, G = 0.15 Epoch of elements : MJD 60320.64224817 TDT (2024 Jan 11.6422) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#472023Apr25,0.31,2024,1,11,15.413955,0.059536,0.195987,21.840300,-6.544671,-0.004121,0.001001,-0.000001,0.000000 -101.3755,-18.0008,-49.26,-21.82,False TYC 6204-00061-1,16.00899186,-17.9334522,11.97,11.34,11.00,0.0,0,,16.03164762,-18.0008380,6.08,5.97,0,0,0 9414,Masamimurakami,17.41,12.491,2.6087,0,0,5.162,-22.06,,1.2,0 0,346.3023,2024,1,11,182.4082,56.2378,12.1949,0.13899,2.42188,2.08528,12.70,5.0,0.15 1.272,0.0110,0.0010,114,0.0018,Known errors,1.18,0,-1,-1 20240111_0061-1,60137.01 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:15 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org