IOTA/IOTA-ES occultation update for (2786) Grinevia / TYC 6379-00015-1 event on 2024 Nov 12, 17:09 UT Visible from Summary ------- On 2024 Nov 12 UT, the 10.552 km diameter asteroid (2786) Grinevia will occult a 11.0 mag star in the constellation Capricornus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.44 mag to 16.42 mag (the magnitude of the asteroid) for at most 0.600 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: 91 * date and approx. time of event: 2024 Nov 12, 17:03 - 2024 Nov 12, 17:16 * geocentric midpoint of event [JD]: 2460627.21519917 * magnitude of target star: 10.99 * magnitude drop [mag]: 5.44 * estimated maximum duration [s]: 0.600 * Moon: 86 % sunlit, 43° distance * Sun: 94° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.50 * 1 sigma uncertainty interval [seconds]: +/- 1.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.008) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.003", 58°) * approx speed of asteroid's shadow [km/s]: 17.5139 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6379-00015-1 by 2786 Grinevia on 2024 Nov 12 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 - 82 0 0 -33 28 39 17 3 51.0 0 112 74 -33 31 44 -33 25 33 -33 34 48 -33 22 29 .... - 81 0 0 -33 48 13 17 3 51.1 1 111 74 -33 51 17 -33 45 9 -33 54 21 -33 42 5 0.05 - 80 0 0 -34 7 4 17 3 51.2 2 111 74 -34 10 8 -34 4 1 -34 13 11 -34 0 58 -0.02 - 79 0 0 -34 25 13 17 3 51.5 3 110 73 -34 28 16 -34 22 10 -34 31 18 -34 19 8 -0.05 - 78 0 0 -34 42 40 17 3 51.8 4 109 73 -34 45 42 -34 39 38 -34 48 43 -34 36 36 -0.06 - 77 0 0 -34 59 25 17 3 52.2 5 109 73 -35 2 26 -34 56 24 -35 5 27 -34 53 23 -0.07 - 76 0 0 -35 15 29 17 3 52.7 5 108 72 -35 18 30 -35 12 28 -35 21 30 -35 9 28 -0.08 - 75 0 0 -35 30 52 17 3 53.2 6 108 72 -35 33 52 -35 27 52 -35 36 52 -35 24 53 -0.08 - 74 0 0 -35 45 35 17 3 53.9 7 107 71 -35 48 34 -35 42 36 -35 51 33 -35 39 37 -0.08 - 73 0 0 -35 59 38 17 3 54.6 8 107 71 -36 2 37 -35 56 39 -36 5 35 -35 53 41 -0.09 - 72 0 0 -36 13 1 17 3 55.4 9 106 70 -36 16 0 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0 0 32 49 51 17 15 28.4 22 229 -57 32 46 11 32 53 31 32 42 31 32 57 11 -0.09 66 0 0 33 29 47 17 15 30.8 21 230 -58 33 26 9 33 33 26 33 22 30 33 37 5 -0.09 67 0 0 34 8 46 17 15 33.2 20 230 -59 34 5 9 34 12 24 34 1 32 34 16 1 -0.09 68 0 0 34 46 48 17 15 35.3 19 231 -59 34 43 13 34 50 24 34 39 37 34 54 0 -0.09 69 0 0 35 23 54 17 15 37.4 18 232 -60 35 20 20 35 27 29 35 16 45 35 31 3 -0.09 70 0 0 36 0 4 17 15 39.3 17 232 -60 35 56 31 36 3 37 35 52 58 36 7 10 -0.09 71 0 0 36 35 18 17 15 41.0 16 233 -60 36 31 46 36 38 50 36 28 15 36 42 21 -0.09 72 0 0 37 9 38 17 15 42.7 15 233 -61 37 6 7 37 13 8 37 2 37 37 16 38 -0.09 73 0 0 37 43 3 17 15 44.2 14 234 -61 37 39 34 37 46 32 37 36 5 37 50 1 -0.09 74 0 0 38 15 35 17 15 45.6 13 235 -61 38 12 7 38 19 3 38 8 40 38 22 30 -0.09 75 0 0 38 47 14 17 15 46.8 12 235 -62 38 43 48 38 50 40 38 40 21 38 54 7 -0.09 76 0 0 39 18 1 17 15 48.0 11 236 -62 39 14 36 39 21 26 39 11 11 39 24 51 -0.09 77 0 0 39 47 57 17 15 49.0 10 237 -62 39 44 33 39 51 20 39 41 9 39 54 44 -0.09 78 0 0 40 17 2 17 15 49.9 9 237 -62 40 13 39 40 20 24 40 10 17 40 23 47 -0.08 79 0 0 40 45 17 17 15 50.8 8 238 -62 40 41 56 40 48 38 40 38 35 40 51 59 -0.08 80 0 0 41 12 43 17 15 51.5 7 239 -63 41 9 23 41 16 3 41 6 3 41 19 23 -0.08 81 0 0 41 39 21 17 15 52.2 6 239 -63 41 36 2 41 42 40 41 32 44 41 45 59 -0.08 82 0 0 42 5 12 17 15 52.7 5 240 -63 42 1 54 42 8 29 41 58 36 42 11 47 -0.08 83 0 0 42 30 15 17 15 53.2 5 241 -63 42 26 59 42 33 32 42 23 42 42 36 48 -0.08 84 0 0 42 54 33 17 15 53.6 4 241 -63 42 51 18 42 57 49 42 48 3 43 1 4 -0.07 85 0 0 43 18 6 17 15 53.9 3 242 -63 43 14 51 43 21 20 43 11 37 43 24 34 -0.07 86 0 0 43 40 54 17 15 54.1 2 243 -63 43 37 41 43 44 7 43 34 28 43 47 20 -0.05 87 0 0 44 2 59 17 15 54.2 1 243 -63 43 59 47 44 6 11 43 56 35 44 9 23 -0.03 88 0 0 44 24 21 17 15 54.3 0 244 -62 44 21 9 44 27 32 44 17 59 44 30 43 0.09 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 6379-00015-1 * constellation : Capricornus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 21 52 28.1554 DE: -18 08 45.276 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 21 52 28.1550 DE: -18 08 45.278 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.0 * B mag [mag]: 11.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2786) Grinevia asteroid class: approx. diameter [km]: 11 approx. diameter ["]: 0.008 distance from Earth [AU]: 1.93620 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#51 date of fit: 2023 Apr 24 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): 0.015", 0.003", 57.512° remarks: * orbital elements for (2786)Grinevia : Mean anomaly = 331.7091550666 deg Arg. of pericenter = 20.8057656329 deg Long. of node = 9.0841629844 deg Inclination = 13.2214399074 deg Eccentricity = 0.1742332940 Semimajor axis = 2.6062453226 AU Perihelion dist = 2.1521506150 AU Mag: H = 12.05, G = 0.15 Epoch of elements : MJD 60626.71519912 TDT (2024 Nov 12.7152) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#512023Apr24,0.60,2024,11,12,17.164780,-0.069003,0.080309,7.426700,6.524075,0.005234,0.001924,0.000000,0.000000 18.6669,-18.0301,-81.41,-17.96,False TYC 6379-00015-1,21.87448765,-18.1459097,11.37,10.99,10.78,0.0,0,,21.89733925,-18.0300950,5.44,5.19,0,0,0 2786,Grinevia,16.42,10.552,1.9362,0,0,2.365,29.63,,1.0,0 0,331.5416,2024,11,12,20.8058,9.0842,13.2214,0.17423,2.60625,2.15215,12.05,5.0,0.15 1.499,0.0150,0.0030,58,0.0038,Known errors,0.79,0,-1,-1 20241112_0015-1,60140.69 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:40 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org