IOTA/IOTA-ES occultation update for (16029) 1999 DQ6 / TYC 64-01049-1 event on 2024 Oct 31, 07:49 UT Visible from Summary ------- On 2024 Oct 31 UT, the 21.5203529680752 km diameter asteroid (16029) 1999 DQ6 will occult a 8.9 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.33 mag to 17.23 mag (the magnitude of the asteroid) for at most 1.580 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: 66 * date and approx. time of event: 2024 Oct 31, 07:43 - 2024 Oct 31, 07:55 * geocentric midpoint of event [JD]: 2460614.82582880 * magnitude of target star: 8.90 * magnitude drop [mag]: 8.33 * estimated maximum duration [s]: 1.580 * Moon: 1 % sunlit, 148° distance * Sun: 158° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 29 * 1 sigma uncertainty interval [path widths]: +/- 0.92 * 1 sigma uncertainty interval [seconds]: +/- 2.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.026, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.026", 0.002", 85°) * approx speed of asteroid's shadow [km/s]: 14.0071 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 64-01049-1 by 16029 1999 DQ6 on 2024 Oct 31 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 172 0 0 -73 36 9 7 54 53.6 0 83 7 -73 28 10 -73 44 9 -73 13 32 -73 58 54 .... 173 0 0 -73 34 3 7 54 53.6 0 82 7 -73 26 4 -73 42 4 -73 11 24 -73 56 51 0.40 174 0 0 -73 31 45 7 54 53.5 1 81 6 -73 23 44 -73 39 47 -73 9 3 -73 54 35 0.61 175 0 0 -73 29 13 7 54 53.5 1 80 6 -73 21 12 -73 37 16 -73 6 29 -73 52 6 0.69 176 0 0 -73 26 28 7 54 53.4 1 79 6 -73 18 26 -73 34 32 -73 3 41 -73 49 23 0.73 177 0 0 -73 23 30 7 54 53.4 1 79 6 -73 15 26 -73 31 34 -73 0 39 -73 46 28 0.76 178 0 0 -73 20 18 7 54 53.3 2 78 5 -73 12 13 -73 28 23 -72 57 24 -73 43 19 0.77 179 0 0 -73 16 52 7 54 53.2 2 77 5 -73 8 46 -73 24 59 -72 53 55 -73 39 57 0.79 -180 0 0 -73 13 12 7 54 53.0 2 76 5 -73 5 5 -73 21 20 -72 50 11 -73 36 21 0.80 -179 0 0 -73 9 18 7 54 52.9 3 75 5 -73 1 10 -73 17 28 -72 46 14 -73 32 31 0.80 -178 0 0 -73 5 10 7 54 52.8 3 74 4 -72 57 0 -73 13 21 -72 42 2 -73 28 27 0.81 -177 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13 - 8 29 22 - 8 45 20 - 8 14 44 - 9 0 4 0.93 - 18 0 0 - 8 34 23 7 43 31.2 6 273 14 - 8 26 24 - 8 42 22 - 8 11 47 - 8 57 6 0.94 - 17 0 0 - 8 32 9 7 43 30.2 5 273 15 - 8 24 11 - 8 40 8 - 8 9 34 - 8 54 52 0.95 - 16 0 0 - 8 30 40 7 43 29.4 4 272 16 - 8 22 42 - 8 38 39 - 8 8 5 - 8 53 23 0.97 - 15 0 0 - 8 29 55 7 43 28.7 3 272 16 - 8 21 57 - 8 37 54 - 8 7 20 - 8 52 38 1.01 - 14 0 0 - 8 29 54 7 43 28.2 2 272 17 - 8 21 56 - 8 37 54 - 8 7 19 - 8 52 37 1.07 - 13 0 0 - 8 30 38 7 43 27.9 1 272 18 - 8 22 39 - 8 38 38 - 8 8 2 - 8 53 22 1.25 - 12 0 0 - 8 32 6 7 43 27.8 0 272 19 - 8 24 8 - 8 40 6 - 8 9 30 - 8 54 51 3.99 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 64-01049-1 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 03 36 13.6859 DE: +01 45 39.069 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 03 36 13.6859 DE: +01 45 39.069 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 8.9 * B mag [mag]: 10.1 * Diameter [mas]: 0.40 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (16029) 1999 DQ6 asteroid class: approx. diameter [km]: 22 approx. diameter ["]: 0.013 distance from Earth [AU]: 2.32550 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 27 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): 0.026", 0.002", 85.308° remarks: * orbital elements for (16029)1999 DQ6 : Mean anomaly = 265.9448358687 deg Arg. of pericenter = 345.6869314595 deg Long. of node = 175.5591733293 deg Inclination = 15.1325216915 deg Eccentricity = 0.1663465137 Semimajor axis = 3.1464370056 AU Perihelion dist = 2.6230381791 AU Mag: H = 12.33, G = 0.15 Epoch of elements : MJD 60614.32582667 TDT (2024 Oct 31.3258) ------ occelmnt file for Occult BEGIN ----------------------------------- <Occultations> <Event> <Elements>JPL#472023Apr27,1.58,2024,10,31,7.819891,0.352118,-0.553072,-6.669072,-4.245962,-0.001830,0.001296,0.000001,0.000001</Elements> <Earth>-103.0250,1.8453,58.60,-14.30,False</Earth> <Star>TYC 64-01049-1,3.60380163,1.7608525,10.05,8.90,8.28,0.4,0,,3.62554739,1.8453076,8.33,8.50,0,0,0</Star> <Object>16029,1999 DQ6,17.23,22.195,2.3255,0,0,-1.682,-16.06,,1.8,0</Object> <Orbit>0,265.8873,2024,10,31,345.6869,175.5592,15.1325,0.16635,3.14644,2.62304,12.33,5.0,0.15</Orbit> <Errors>1.919,0.0257,0.0016,85,0.0121,Known errors,1.11,0,-1,-1</Errors> <ID>20241031_1049-1,60140.67</ID> </Event> </Occultations> ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:05 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org