IOTA/IOTA-ES occultation update for (6104) Takao / TYC 5539-00215-1 event on 2024 Mar 10, 02:48 UT Visible from Summary ------- On 2024 Mar 10 UT, the 8.645 km diameter asteroid (6104) Takao will occult a 10.9 mag star in the constellation Virgo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.22 mag to 17.14 mag (the magnitude of the asteroid) for at most 1.010 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 Mar 10, 02:38 - 2024 Mar 10, 02:58 * geocentric midpoint of event [JD]: 2460379.61696667 * magnitude of target star: 10.92 * magnitude drop [mag]: 6.22 * estimated maximum duration [s]: 1.010 * Moon: 0 % sunlit, 147° distance * Sun: 150° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.37 * 1 sigma uncertainty interval [seconds]: +/- 2.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.002", 112°) * approx speed of asteroid's shadow [km/s]: 8.5549 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5539-00215-1 by 6104 Takao on 2024 Mar 10 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 -110 0 0 -20 42 8 2 58 15.9 0 102 -19 -20 39 7 -20 45 8 -20 36 55 -20 47 21 .... -109 0 0 -20 54 9 2 58 15.7 1 101 -20 -20 51 8 -20 57 9 -20 48 55 -20 59 22 0.53 -108 0 0 -21 6 31 2 58 15.2 2 101 -21 -21 3 30 -21 9 32 -21 1 17 -21 11 45 0.63 -107 0 0 -21 19 15 2 58 14.5 3 101 -22 -21 16 14 -21 22 17 -21 14 1 -21 24 30 0.67 -106 0 0 -21 32 21 2 58 13.5 4 100 -22 -21 29 19 -21 35 22 -21 27 6 -21 37 36 0.69 -105 0 0 -21 45 47 2 58 12.3 5 100 -23 -21 42 46 -21 48 49 -21 40 32 -21 51 3 0.70 -104 0 0 -21 59 34 2 58 10.8 6 99 -24 -21 56 32 -22 2 36 -21 54 18 -22 4 50 0.71 -103 0 0 -22 13 41 2 58 9.1 7 99 -25 -22 10 39 -22 16 43 -22 8 25 -22 18 57 0.72 -102 0 0 -22 28 8 2 58 7.1 8 99 -26 -22 25 6 -22 31 11 -22 22 52 -22 33 25 0.72 -101 0 0 -22 42 55 2 58 4.8 9 98 -27 -22 39 52 -22 45 57 -22 37 38 -22 48 12 0.73 -100 0 0 -22 58 0 2 58 2.3 10 98 -27 -22 54 57 -23 1 3 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84 0 0 -54 53 34 2 38 42.4 6 259 21 -54 50 31 -54 56 37 -54 48 17 -54 58 51 0.82 85 0 0 -54 44 3 2 38 41.4 5 259 21 -54 41 0 -54 47 6 -54 38 46 -54 49 21 0.82 86 0 0 -54 34 16 2 38 40.5 5 258 22 -54 31 13 -54 37 19 -54 28 58 -54 39 34 0.83 87 0 0 -54 24 13 2 38 39.7 4 257 22 -54 21 9 -54 27 16 -54 18 54 -54 29 31 0.84 88 0 0 -54 13 53 2 38 39.0 4 256 23 -54 10 49 -54 16 57 -54 8 34 -54 19 12 0.86 89 0 0 -54 3 17 2 38 38.4 3 255 24 -54 0 13 -54 6 21 -53 57 58 -54 8 37 0.88 90 0 0 -53 52 25 2 38 37.9 2 255 24 -53 49 21 -53 55 29 -53 47 5 -53 57 45 0.91 91 0 0 -53 41 16 2 38 37.6 2 254 25 -53 38 11 -53 44 21 -53 35 56 -53 46 37 0.96 92 0 0 -53 29 51 2 38 37.3 1 253 25 -53 26 46 -53 32 56 -53 24 30 -53 35 12 1.08 93 0 0 -53 18 9 2 38 37.1 0 252 26 -53 15 3 -53 21 14 -53 12 47 -53 23 31 1.49 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 14.2 Data for the target star ------------------------ * name: TYC 5539-00215-1 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 13 05 55.8039 DE: -10 50 54.229 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 13 05 55.8040 DE: -10 50 54.230 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 10.9 * B mag [mag]: 11.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (6104) Takao asteroid class: approx. diameter [km]: 9 approx. diameter ["]: 0.006 distance from Earth [AU]: 1.90780 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#52 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): 0.016", 0.002", 112° remarks: * orbital elements for (6104)Takao : Mean anomaly = 250.1316819390 deg Arg. of pericenter = 24.0738180190 deg Long. of node = 284.8418109553 deg Inclination = 2.4155925517 deg Eccentricity = 0.0947524571 Semimajor axis = 2.7055263819 AU Perihelion dist = 2.4491711094 AU Mag: H = 12.84, G = 0.15 Epoch of elements : MJD 60379.11696633 TDT (2024 Mar 10.1170) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522023Apr25,1.01,2024,3,10,2.807200,-0.175584,-0.584524,-4.625070,1.387239,-0.002569,0.001404,0.000001,-0.000001 -13.5815,-10.9794,140.45,-3.95,False TYC 5539-00215-1,13.09883442,-10.8483970,11.21,10.92,10.76,0.0,0,,13.12019936,-10.9794307,6.22,5.93,0,0,0 6104,Takao,17.14,8.645,1.9078,0,0,-1.448,6.40,,0.8,0 0,250.1058,2024,3,10,24.0738,284.8418,2.4156,0.09475,2.70553,2.44917,12.84,5.0,0.15 1.368,0.0160,0.0018,112,0.0023,Known errors,1.50,0,-1,-1 20240310_0215-1,60139.22 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 05:21 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org