IOTA/IOTA-ES occultation update for (2009) Voloshina / TYC 645-01184-1 event on 2024 Jan 29, 08:03 UT Visible from Summary ------- On 2024 Jan 29 UT, the 27.791 km diameter asteroid (2009) Voloshina will occult a 10.3 mag star in the constellation Aries for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.40 mag to 16.68 mag (the magnitude of the asteroid) for at most 1.880 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 Jan 29, 07:58 - 2024 Jan 29, 08:09 * geocentric midpoint of event [JD]: 2460338.83608800 * magnitude of target star: 10.28 * magnitude drop [mag]: 6.40 * estimated maximum duration [s]: 1.880 * Moon: 89 % sunlit, 125° distance * Sun: 93° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 35 * 1 sigma uncertainty interval [path widths]: +/- 0.13 * 1 sigma uncertainty interval [seconds]: +/- 2.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.021, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.001", 71°) * approx speed of asteroid's shadow [km/s]: 14.7631 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 645-01184-1 by 2009 Voloshina on 2024 Jan 29 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 60 0 0 13 22 21 7 58 13.4 0 76 58 13 12 33 13 32 11 13 9 57 13 34 48 .... 61 0 0 13 37 16 7 58 13.5 1 76 58 13 27 26 13 47 7 13 24 50 13 49 44 -0.55 62 0 0 13 52 45 7 58 13.8 2 77 58 13 42 54 14 2 38 13 40 17 14 5 16 -0.65 63 0 0 14 8 49 7 58 14.3 3 77 58 13 58 56 14 18 43 13 56 19 14 21 21 -0.69 64 0 0 14 25 27 7 58 14.9 4 77 58 14 15 32 14 35 23 14 12 54 14 38 1 -0.71 65 0 0 14 42 39 7 58 15.7 5 77 57 14 32 43 14 52 36 14 30 4 14 55 16 -0.72 66 0 0 15 0 25 7 58 16.7 6 78 57 14 50 27 15 10 24 14 47 48 15 13 4 -0.73 67 0 0 15 18 45 7 58 17.8 7 78 57 15 8 45 15 28 46 15 6 6 15 31 26 -0.74 68 0 0 15 37 39 7 58 19.2 8 78 56 15 27 37 15 47 42 15 24 57 15 50 22 -0.74 69 0 0 15 57 6 7 58 20.7 9 79 56 15 47 2 16 7 11 15 44 22 16 9 52 -0.75 70 0 0 16 17 6 7 58 22.3 10 79 55 16 7 1 16 27 13 16 4 20 16 29 55 -0.75 71 0 0 16 37 39 7 58 24.2 11 79 55 16 27 32 16 47 48 16 24 51 16 50 31 -0.75 72 0 0 16 58 45 7 58 26.2 12 80 54 16 48 36 17 8 56 16 45 54 17 11 39 -0.75 73 0 0 17 20 24 7 58 28.4 13 80 54 17 10 12 17 30 37 17 7 30 17 33 20 -0.76 74 0 0 17 42 34 7 58 30.7 14 80 53 17 32 21 17 52 50 17 29 38 17 55 33 -0.76 75 0 0 18 5 17 7 58 33.3 15 81 52 17 55 1 18 15 34 17 52 17 18 18 19 -0.76 76 0 0 18 28 31 7 58 36.0 16 81 52 18 18 13 18 38 50 18 15 29 18 41 35 -0.76 77 0 0 18 52 15 7 58 38.8 17 81 51 18 41 55 19 2 37 18 39 11 19 5 23 -0.76 78 0 0 19 16 31 7 58 41.9 18 82 50 19 6 8 19 26 55 19 3 23 19 29 41 -0.76 79 0 0 19 41 16 7 58 45.1 19 82 49 19 30 52 19 51 43 19 28 6 19 54 29 -0.76 80 0 0 20 6 31 7 58 48.5 20 83 49 19 56 4 20 17 0 19 53 18 20 19 48 -0.76 81 0 0 20 32 16 7 58 52.0 21 83 48 20 21 47 20 42 47 20 18 59 20 45 35 -0.77 82 0 0 20 58 29 7 58 55.7 22 84 47 20 47 57 21 9 2 20 45 10 21 11 51 -0.77 83 0 0 21 25 10 7 58 59.6 23 84 46 21 14 36 21 35 46 21 11 48 21 38 35 -0.77 84 0 0 21 52 18 7 59 3.6 24 85 45 21 41 42 22 2 56 21 38 53 22 5 46 -0.77 85 0 0 22 19 54 7 59 7.8 25 85 45 22 9 15 22 30 34 22 6 25 22 33 25 -0.77 86 0 0 22 47 55 7 59 12.2 26 86 44 22 37 14 22 58 38 22 34 24 23 1 29 -0.77 87 0 0 23 16 22 7 59 16.7 27 86 43 23 5 38 23 27 7 23 2 48 23 29 59 -0.77 88 0 0 23 45 14 7 59 21.4 28 87 42 23 34 28 23 56 1 23 31 36 23 58 54 -0.77 89 0 0 24 14 29 7 59 26.2 29 88 41 24 3 41 24 25 19 24 0 49 24 28 12 -0.77 90 0 0 24 44 8 7 59 31.1 30 88 40 24 33 17 24 55 0 24 30 24 24 57 54 -0.77 91 0 0 25 14 8 7 59 36.2 31 89 39 25 3 15 25 25 3 25 0 22 25 27 58 -0.77 92 0 0 25 44 30 7 59 41.5 32 90 38 25 33 35 25 55 28 25 30 41 25 58 23 -0.77 93 0 0 26 15 13 7 59 46.8 33 91 37 26 4 15 26 26 12 26 1 21 26 29 8 -0.77 94 0 0 26 46 15 7 59 52.3 34 91 36 26 35 15 26 57 17 26 32 20 27 0 13 -0.77 95 0 0 27 17 36 7 59 58.0 35 92 35 27 6 33 27 28 40 27 3 37 27 31 37 -0.77 96 0 0 27 49 13 8 0 3.7 36 93 34 27 38 9 28 0 20 27 35 12 28 3 17 -0.77 97 0 0 28 21 7 8 0 9.6 37 94 33 28 10 0 28 32 16 28 7 4 28 35 14 -0.77 98 0 0 28 53 17 8 0 15.6 37 95 32 28 42 8 29 4 28 28 39 10 29 7 27 -0.77 99 0 0 29 25 41 8 0 21.6 38 96 31 29 14 30 29 36 54 29 11 32 29 39 53 -0.77 100 0 0 29 58 18 8 0 27.8 39 97 30 29 47 5 30 9 33 29 44 6 30 12 33 -0.77 101 0 0 30 31 7 8 0 34.1 40 98 29 30 19 51 30 42 24 30 16 52 30 45 24 -0.77 102 0 0 31 4 6 8 0 40.5 41 99 28 30 52 49 31 15 26 30 49 49 31 18 27 -0.77 103 0 0 31 37 16 8 0 47.0 41 100 27 31 25 56 31 48 37 31 22 56 31 51 38 -0.77 104 0 0 32 10 33 8 0 53.5 42 101 26 31 59 12 32 21 56 31 56 11 32 24 58 -0.77 105 0 0 32 43 58 8 1 0.1 43 103 25 32 32 35 32 55 23 32 29 34 32 58 25 -0.77 106 0 0 33 17 28 8 1 6.8 44 104 24 33 6 4 33 28 55 33 3 2 33 31 58 -0.77 107 0 0 33 51 3 8 1 13.6 44 105 23 33 39 37 34 2 31 33 36 35 34 5 34 -0.77 108 0 0 34 24 41 8 1 20.4 45 106 22 34 13 13 34 36 11 34 10 11 34 39 14 -0.77 109 0 0 34 58 21 8 1 27.2 46 108 21 34 46 52 35 9 52 34 43 49 35 12 56 -0.77 110 0 0 35 32 1 8 1 34.1 46 109 20 35 20 31 35 43 34 35 17 28 35 46 38 -0.77 111 0 0 36 5 41 8 1 41.0 47 111 19 35 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Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: TYC 645-01184-1 * constellation : Aries * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 02 40 59.7246 DE: +13 20 09.164 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 02 40 59.7240 DE: +13 20 09.161 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.300) * V mag [mag]: 10.3 * B mag [mag]: 10.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2009) Voloshina asteroid class: approx. diameter [km]: 28 approx. diameter ["]: 0.015 distance from Earth [AU]: 2.58370 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#61 date of fit: 2023 Feb 11 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): 0.023", 0.001", 70.881° remarks: * orbital elements for (2009)Voloshina : Mean anomaly = 321.1022916182 deg Arg. of pericenter = 5.1920171032 deg Long. of node = 107.3335800070 deg Inclination = 2.8588834388 deg Eccentricity = 0.1365611631 Semimajor axis = 3.1245828299 AU Perihelion dist = 2.6978861643 AU Mag: H = 11.36, G = 0.15 Epoch of elements : MJD 60338.33608546 TDT (2024 Jan 29.3361) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#612023Feb11,1.88,2024,1,29,8.066112,-0.241236,0.555353,7.631582,3.345518,0.005631,0.001800,0.000000,0.000000 151.5042,13.4390,62.26,-18.03,False TYC 645-01184-1,2.68325684,13.3358790,10.63,10.28,10.09,0.0,0,,2.70512635,13.4390367,6.41,6.15,0,0,0 2009,Voloshina,16.68,27.791,2.5837,0,0,1.781,11.39,,2.0,0 0,321.0423,2024,1,29,5.1920,107.3336,2.8589,0.13656,3.12458,2.69789,11.36,5.0,0.15 1.133,0.0227,0.0008,71,0.0020,Known errors,1.92,0,-1,-1 20240129_1184-1,60137.04 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:51 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org