IOTA/IOTA-ES occultation update for (547616) 2010 TR195 / UCAC4 493-004523 event on 2023 Nov 28, 16:34 UT Visible from Summary ------- On 2023 Nov 28 UT, the 95.06 km diameter asteroid (547616) 2010 TR195 will occult a 14.4 mag star in the constellation Cetus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.07 mag to 22.51 mag (the magnitude of the asteroid) for at most 4.240 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: 4 * date and approx. time of event: 2023 Nov 28, 16:24 - 2023 Nov 28, 16:33 * geocentric midpoint of event [JD]: 2460277.18688062 * magnitude of target star: 14.44 * magnitude drop [mag]: 8.07 * estimated maximum duration [s]: 4.240 * Moon: 98 % sunlit, 39° distance * Sun: 159° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 95 * 1 sigma uncertainty interval [path widths]: +/- 14.21 * 1 sigma uncertainty interval [seconds]: +/- 93.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.103, +/- 0.060) * 1 sigma uncertainty ellipse (major, minor, PA): (0.103", 0.060", 91°) * approx speed of asteroid's shadow [km/s]: 22.4375 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 493-004523 by 547616 2010 TR195 on 2023 Nov 28 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 2 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. - 7 24 42 .. .. .. .... 3 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. - 7 15 20 .. .. .. .... 4 0 0 -19 55 24 16 33 50.5 0 81 20 -19 29 14 -20 21 34 - 7 5 40 .. .. .. .... 5 0 0 -19 46 2 16 33 50.5 1 80 19 -19 19 52 -20 12 14 - 6 55 42 .. .. .. -0.01 6 0 0 -19 36 24 16 33 50.3 2 80 18 -19 10 12 -20 2 37 - 6 45 27 .. .. .. 0.03 7 0 0 -19 26 28 16 33 50.1 3 80 17 -19 0 15 -19 52 42 - 6 34 53 -32 29 48 0.04 8 0 0 -19 16 16 16 33 49.8 4 79 16 -18 50 1 -19 42 31 - 6 24 2 -32 20 18 0.04 9 0 0 -19 5 47 16 33 49.4 5 79 15 -18 39 31 -19 32 3 - 6 12 54 -32 10 31 0.05 10 0 0 -18 55 1 16 33 49.0 6 79 14 -18 28 44 -19 21 19 - 6 1 28 -32 0 28 0.05 11 0 0 -18 43 58 16 33 48.4 7 78 13 -18 17 40 -19 10 18 - 5 49 46 -31 50 9 0.05 12 0 0 -18 32 40 16 33 47.8 8 78 12 -18 6 20 -18 59 1 - 5 37 46 -31 39 34 0.06 13 0 0 -18 21 5 16 33 47.1 9 78 11 -17 54 43 -18 47 27 - 5 25 30 -31 28 43 0.06 14 0 0 -18 9 14 16 33 46.3 10 78 11 -17 42 51 -18 35 37 - 5 12 58 -31 17 37 0.06 15 0 0 -17 57 7 16 33 45.4 11 77 10 -17 30 42 -18 23 32 - 5 0 9 -31 6 15 0.06 16 0 0 -17 44 44 16 33 44.5 12 77 9 -17 18 18 -18 11 11 - 4 47 5 -30 54 37 0.06 17 0 0 -17 32 6 16 33 43.5 13 77 8 -17 5 38 -17 58 34 - 4 33 44 -30 42 44 0.06 18 0 0 -17 19 12 16 33 42.3 14 76 7 -16 52 43 -17 45 41 - 4 20 8 -30 30 36 0.06 19 0 0 -17 6 3 16 33 41.2 15 76 6 -16 39 33 -17 32 34 - 4 6 17 -30 18 12 0.06 20 0 0 -16 52 39 16 33 39.9 16 76 5 -16 26 7 -17 19 11 - 3 52 11 -30 5 34 0.06 21 0 0 -16 39 0 16 33 38.5 17 75 4 -16 12 27 -17 5 34 - 3 37 50 -29 52 40 0.06 22 0 0 -16 25 6 16 33 37.1 18 75 3 -15 58 32 -16 51 41 - 3 23 14 -29 39 32 0.06 23 0 0 -16 10 58 16 33 35.6 19 75 2 -15 44 22 -16 37 35 - 3 8 24 -29 26 9 0.06 24 0 0 -15 56 36 16 33 33.9 20 75 1 -15 29 58 -16 23 14 - 2 53 19 -29 12 32 0.06 25 0 0 -15 41 59 16 33 32.3 21 74 0 -15 15 20 -16 8 39 - 2 38 1 -28 58 41 0.06 26 0 0 -15 27 9 16 33 30.5 22 74 -1 -15 0 29 -15 53 50 - 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0 1 6 0.06 -177 0 0 12 50 7 16 24 23.5 2 278 -21 13 16 13 12 24 1 25 37 37 .. .. .. 0.06 -176 0 0 12 41 25 16 24 23.4 1 279 -20 13 7 32 12 15 17 25 29 29 .. .. .. 0.04 -175 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 25 21 3 .. .. .. .... -174 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 25 12 21 .. .. .. .... Uncertainty in time = +/- 96 secs Prediction of 2023 Oct 3.0 Data for the target star ------------------------ * name: UCAC4 493-004523 * constellation : Cetus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 03 04 01.9105 DE: +08 29 29.146 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 03 04 01.9105 DE: +08 29 29.146 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.400,0.200) * V mag [mag]: 14.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (547616) 2010 TR195 asteroid class: TNO approx. diameter [km]: 95 approx. diameter ["]: 0.005 distance from Earth [AU]: 28.87730 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#6 date of fit: 2022 Nov 23 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): 0.103", 0.060", 90.577° remarks: * orbital elements for (547616)2010 TR195 : Mean anomaly = 345.0747535909 deg Arg. of pericenter = 234.8002818620 deg Long. of node = 199.4833834016 deg Inclination = 17.5557138045 deg Eccentricity = 0.2690094309 Semimajor axis = 39.8551952778 AU Perihelion dist = 29.1337718795 AU Mag: H = 7.71, G = 0.15 Epoch of elements : MJD 60276.69062500 TDT (2023 Nov 28.6906) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#62022Nov23,4.24,2023,11,28,16.485135,0.019987,-0.061892,-12.151894,-3.566174,0.001762,0.001397,0.000001,0.000000 91.7390,8.5858,-70.29,-21.34,False UCAC4 493-004523,3.06719737,8.4914294,0.00,14.44,0.00,0.0,0,,3.08878461,8.5858307,8.07,0.00,0,0,0 547616,2010 TR195,22.51,95.060,28.8773,0,0,-0.249,-1.09,,0.0,0 0,345.0720,2023,11,28,234.8003,199.4834,17.5557,0.26901,39.85520,29.13377,7.71,5.0,0.15 15.196,0.1027,0.0597,91,0.1187,Known errors,-1.00,0,-1,-1 20231128_004523,60219.96 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 02, 23:03 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org