IOTA/IOTA-ES occultation update for (9789) 1995 GO7 / TYC 6340-00633-1 event on 2024 Nov 05, 17:11 UT Visible from Summary ------- On 2024 Nov 05 UT, the 20.695 km diameter asteroid (9789) 1995 GO7 will occult a 10.3 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 8.57 mag to 18.84 mag (the magnitude of the asteroid) for at most 0.980 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 Nov 05, 17:06 - 2024 Nov 05, 17:16 * geocentric midpoint of event [JD]: 2460620.21643442 * magnitude of target star: 10.27 * magnitude drop [mag]: 8.57 * estimated maximum duration [s]: 0.980 * Moon: 16 % sunlit, 32° distance * Sun: 79° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 21 * 1 sigma uncertainty interval [path widths]: +/- 0.27 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.002", 79°) * approx speed of asteroid's shadow [km/s]: 21.0163 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6340-00633-1 by 9789 1995 GO7 on 2024 Nov 5 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 - 97 0 0 -25 3 21 17 6 42.2 0 114 72 -25 9 36 -24 57 6 -25 12 57 .. .. .. .... - 96 0 0 -25 27 9 17 6 42.2 1 113 73 -25 33 24 -25 20 55 -25 36 44 -25 17 34 0.24 - 95 0 0 -25 50 37 17 6 42.4 2 113 73 -25 56 51 -25 44 23 -26 0 11 -25 41 3 0.22 - 94 0 0 -26 13 45 17 6 42.6 3 112 74 -26 19 58 -26 7 32 -26 23 18 -26 4 12 0.22 - 93 0 0 -26 36 32 17 6 42.9 4 112 74 -26 42 44 -26 30 20 -26 46 4 -26 27 0 0.21 - 92 0 0 -26 58 58 17 6 43.3 5 111 75 -27 5 10 -26 52 46 -27 8 29 -26 49 28 0.21 - 91 0 0 -27 21 3 17 6 43.8 6 111 75 -27 27 14 -27 14 52 -27 30 33 -27 11 34 0.21 - 90 0 0 -27 42 46 17 6 44.4 7 111 75 -27 48 57 -27 36 36 -27 52 15 -27 33 18 0.21 - 89 0 0 -28 4 8 17 6 45.1 8 110 76 -28 10 18 -27 57 59 -28 13 36 -27 54 41 0.21 - 88 0 0 -28 25 8 17 6 45.8 9 110 76 -28 31 17 -28 18 59 -28 34 34 -28 15 42 0.21 - 87 0 0 -28 45 45 17 6 46.7 10 109 76 -28 51 53 -28 39 37 -28 55 11 -28 36 20 0.21 - 86 0 0 -29 6 1 17 6 47.6 11 109 76 -29 12 8 -28 59 53 -29 15 25 -28 56 37 0.21 - 85 0 0 -29 25 53 17 6 48.5 12 108 76 -29 32 0 -29 19 47 -29 35 16 -29 16 30 0.21 - 84 0 0 -29 45 23 17 6 49.6 13 108 76 -29 51 29 -29 39 17 -29 54 45 -29 36 1 0.21 - 83 0 0 -30 4 30 17 6 50.7 13 107 76 -30 10 35 -29 58 25 -30 13 50 -29 55 10 0.21 - 82 0 0 -30 23 14 17 6 51.9 14 107 76 -30 29 18 -30 17 9 -30 32 33 -30 13 55 0.21 - 81 0 0 -30 41 34 17 6 53.2 15 106 75 -30 47 38 -30 35 31 -30 50 53 -30 32 16 0.21 - 80 0 0 -30 59 32 17 6 54.6 16 106 75 -31 5 35 -30 53 29 -31 8 49 -30 50 15 0.21 - 79 0 0 -31 17 6 17 6 56.0 17 105 75 -31 23 8 -31 11 4 -31 26 22 -31 7 50 0.20 - 78 0 0 -31 34 16 17 6 57.5 18 104 74 -31 40 17 -31 28 15 -31 43 31 -31 25 2 0.20 - 77 0 0 -31 51 3 17 6 59.0 19 104 74 -31 57 4 -31 45 2 -32 0 17 -31 41 50 0.20 - 76 0 0 -32 7 26 17 7 0.6 20 103 73 -32 13 26 -32 1 26 -32 16 39 -31 58 14 0.20 - 75 0 0 -32 23 26 17 7 2.3 21 103 73 -32 29 25 -32 17 27 -32 32 37 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73 0 0 - 2 53 34 17 16 22.7 18 248 -60 - 2 59 54 - 2 47 13 - 3 3 18 - 2 43 49 0.22 74 0 0 - 2 25 8 17 16 24.4 17 248 -61 - 2 31 28 - 2 18 48 - 2 34 51 - 2 15 24 0.22 75 0 0 - 1 56 55 17 16 26.1 16 248 -62 - 2 3 15 - 1 50 36 - 2 6 38 - 1 47 13 0.22 76 0 0 - 1 28 58 17 16 27.6 14 248 -63 - 1 35 17 - 1 22 39 - 1 38 40 - 1 19 16 0.22 77 0 0 - 1 1 16 17 16 29.1 13 248 -64 - 1 7 34 - 0 54 58 - 1 10 56 - 0 51 35 0.23 78 0 0 - 0 33 49 17 16 30.4 12 248 -65 - 0 40 7 - 0 27 32 - 0 43 29 - 0 24 10 0.23 79 0 0 - 0 6 40 17 16 31.6 11 248 -66 - 0 12 57 - 0 0 23 - 0 16 18 0 2 59 0.23 80 0 0 0 20 13 17 16 32.7 10 248 -67 0 13 57 0 26 29 0 10 35 0 29 50 0.23 81 0 0 0 46 48 17 16 33.7 9 248 -68 0 40 32 0 53 3 0 37 11 0 56 24 0.23 82 0 0 1 13 4 17 16 34.5 8 248 -69 1 6 50 1 19 19 1 3 29 1 22 40 0.24 83 0 0 1 39 2 17 16 35.3 7 248 -70 1 32 48 1 45 16 1 29 28 1 48 36 0.24 84 0 0 2 4 41 17 16 35.9 6 248 -71 1 58 27 2 10 54 1 55 7 2 14 14 0.25 85 0 0 2 29 59 17 16 36.5 5 248 -72 2 23 46 2 36 12 2 20 27 2 39 31 0.26 86 0 0 2 54 57 17 16 36.9 4 248 -73 2 48 45 3 1 9 2 45 26 3 4 28 0.28 87 0 0 3 19 35 17 16 37.2 2 248 -74 3 13 24 3 25 46 3 10 5 3 29 4 0.31 88 0 0 3 43 51 17 16 37.4 1 248 -75 3 37 41 3 50 1 3 34 22 3 53 20 0.38 89 0 0 4 7 46 17 16 37.4 0 249 -76 4 1 36 4 13 55 3 58 18 4 17 13 1.05 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 6340-00633-1 * constellation : Capricornus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 20 20 33.0472 DE: -21 26 13.338 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 20 20 33.0470 DE: -21 26 13.339 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.3 * B mag [mag]: 10.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (9789) 1995 GO7 asteroid class: approx. diameter [km]: 21 approx. diameter ["]: 0.008 distance from Earth [AU]: 3.52120 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#49 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): 0.015", 0.002", 78.72° remarks: * orbital elements for (9789)1995 GO7 : Mean anomaly = 136.0829995054 deg Arg. of pericenter = 128.2710174699 deg Long. of node = 44.7523849575 deg Inclination = 1.8966836369 deg Eccentricity = 0.1362430020 Semimajor axis = 3.1385329305 AU Perihelion dist = 2.7109297822 AU Mag: H = 12.53, G = 0.15 Epoch of elements : MJD 60619.71643409 TDT (2024 Nov 05.7164) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#492023Apr25,0.98,2024,11,5,17.194426,0.053028,-0.186326,11.420288,3.207585,0.005742,0.001328,0.000000,0.000000 2.1593,-21.3597,-82.01,-15.98,False TYC 6340-00633-1,20.34251314,-21.4370384,10.46,10.27,10.17,0.0,0,,20.36658856,-21.3597362,8.57,8.23,0,0,0 9789,1995 GO7,18.84,20.695,3.5212,0,0,2.042,8.01,,1.2,0 0,135.9560,2024,11,5,128.2710,44.7524,1.8967,0.13624,3.13853,2.71093,12.53,5.0,0.15 1.268,0.0147,0.0019,79,0.0022,Known errors,1.00,0,-1,-1 20241105_0633-1,60140.68 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:23 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org