IOTA/IOTA-ES occultation update for (5299) Bittesini / UCAC4 319-089667 event on 2024 Sep 08, 16:53 UT Visible from Summary ------- On 2024 Sep 08 UT, the 18.0861842699399 km diameter asteroid (5299) Bittesini will occult a 11.7 mag star in the constellation Scorpius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.60 mag to 18.27 mag (the magnitude of the asteroid) for at most 1.040 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 Sep 08, 16:47 - 2024 Sep 08, 16:59 * geocentric midpoint of event [JD]: 2460562.20360404 * magnitude of target star: 11.67 * magnitude drop [mag]: 6.60 * estimated maximum duration [s]: 1.040 * Moon: 26 % sunlit, 26° distance * Sun: 87° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 18 * 1 sigma uncertainty interval [path widths]: +/- 0.31 * 1 sigma uncertainty interval [seconds]: +/- 2.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.001", 96°) * approx speed of asteroid's shadow [km/s]: 17.5449 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 319-089667 by 5299 Bittesini on 2024 Sep 8 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 - 80 0 0 - 2 54 49 16 47 8.2 0 116 79 - 3 0 22 - 2 49 15 - 3 3 45 - 2 45 52 .... - 79 0 0 - 3 24 51 16 47 8.3 1 116 79 - 3 30 25 - 3 19 18 - 3 33 48 - 3 15 55 0.13 - 78 0 0 - 3 54 53 16 47 8.6 3 116 79 - 4 0 26 - 3 49 19 - 4 3 49 - 3 45 56 0.10 - 77 0 0 - 4 24 52 16 47 9.0 4 116 79 - 4 30 25 - 4 19 19 - 4 33 49 - 4 15 56 0.08 - 76 0 0 - 4 54 48 16 47 9.5 5 116 79 - 5 0 22 - 4 49 15 - 5 3 45 - 4 45 52 0.08 - 75 0 0 - 5 24 41 16 47 10.2 6 116 79 - 5 30 14 - 5 19 8 - 5 33 37 - 5 15 45 0.07 - 74 0 0 - 5 54 29 16 47 11.0 7 116 79 - 6 0 2 - 5 48 56 - 6 3 25 - 5 45 33 0.07 - 73 0 0 - 6 24 12 16 47 11.9 8 116 78 - 6 29 44 - 6 18 39 - 6 33 7 - 6 15 16 0.06 - 72 0 0 - 6 53 48 16 47 13.0 9 116 78 - 6 59 21 - 6 48 15 - 7 2 43 - 6 44 53 0.06 - 71 0 0 - 7 23 17 16 47 14.2 10 116 77 - 7 28 50 - 7 17 45 - 7 32 12 - 7 14 22 0.06 - 70 0 0 - 7 52 39 16 47 15.5 12 116 77 - 7 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- 6 13 17 0.06 89 0 0 - 5 52 27 16 59 8.5 11 244 -74 - 5 58 0 - 5 46 53 - 6 1 23 - 5 43 30 0.07 90 0 0 - 5 22 35 16 59 9.7 10 244 -75 - 5 28 8 - 5 17 2 - 5 31 31 - 5 13 39 0.07 91 0 0 - 4 52 39 16 59 10.8 8 244 -76 - 4 58 12 - 4 47 5 - 5 1 35 - 4 43 42 0.07 92 0 0 - 4 22 39 16 59 11.8 7 244 -77 - 4 28 12 - 4 17 5 - 4 31 35 - 4 13 42 0.07 93 0 0 - 3 52 36 16 59 12.6 6 244 -78 - 3 58 9 - 3 47 2 - 4 1 33 - 3 43 39 0.08 94 0 0 - 3 22 31 16 59 13.3 5 244 -79 - 3 28 4 - 3 16 57 - 3 31 28 - 3 13 34 0.08 95 0 0 - 2 52 25 16 59 13.9 4 244 -80 - 2 57 58 - 2 46 51 - 3 1 21 - 2 43 28 0.10 96 0 0 - 2 22 18 16 59 14.3 3 244 -81 - 2 27 51 - 2 16 44 - 2 31 15 - 2 13 21 0.11 97 0 0 - 1 52 12 16 59 14.6 2 244 -82 - 1 57 45 - 1 46 38 - 2 1 8 - 1 43 15 0.16 98 0 0 - 1 22 7 16 59 14.7 1 244 -82 - 1 27 40 - 1 16 33 - 1 31 3 - 1 13 10 0.36 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.5 Data for the target star ------------------------ * name: UCAC4 319-089667 * constellation : Scorpius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 16 42 39.8468 DE: -26 23 53.932 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 16 42 39.8468 DE: -26 23 53.932 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.7 * B mag [mag]: 13.0 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (5299) Bittesini asteroid class: approx. diameter [km]: 18 approx. diameter ["]: 0.008 distance from Earth [AU]: 3.15490 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#57 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): 0.017", 0.001", 95.913° remarks: * orbital elements for (5299)Bittesini : Mean anomaly = 227.5390582712 deg Arg. of pericenter = 82.6241605182 deg Long. of node = 325.5249945226 deg Inclination = 4.8780919497 deg Eccentricity = 0.0627452630 Semimajor axis = 3.1149104901 AU Perihelion dist = 2.9194646121 AU Mag: H = 12.28, G = 0.15 Epoch of elements : MJD 60561.70360383 TDT (2024 Sep 08.7036) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#572023Apr25,1.04,2024,9,8,16.886497,0.000282,-0.037238,9.901565,0.157540,0.005712,-0.000772,0.000000,0.000000 9.5047,-26.4462,-73.93,5.32,False UCAC4 319-089667,16.71106859,-26.3983146,13.02,11.67,10.94,0.1,0,,16.73635021,-26.4461556,6.60,6.88,0,0,0 5299,Bittesini,18.27,18.315,3.1549,0,0,2.055,0.44,,1.4,0 0,227.4129,2024,9,8,82.6242,325.5250,4.8781,0.06275,3.11491,2.91946,12.28,5.0,0.15 1.305,0.0167,0.0015,96,0.0024,Known errors,1.04,0,-1,-1 20240908_089667,60140.55 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:11 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org