IOTA/IOTA-ES occultation update for (6570) Tomohiro / TYC 1205-00707-1 event on 2024 Jul 31, 10:51 UT Visible from Summary ------- On 2024 Jul 31 UT, the 22.577 km diameter asteroid (6570) Tomohiro will occult a 10.7 mag star in the constellation Pisces for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.75 mag to 18.47 mag (the magnitude of the asteroid) for at most 2.660 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: 94 * date and approx. time of event: 2024 Jul 31, 10:38 - 2024 Jul 31, 11:04 * geocentric midpoint of event [JD]: 2460522.95247742 * magnitude of target star: 10.72 * magnitude drop [mag]: 7.75 * estimated maximum duration [s]: 2.660 * Moon: 17 % sunlit, 51° distance * Sun: 99° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 23 * 1 sigma uncertainty interval [path widths]: +/- 0.46 * 1 sigma uncertainty interval [seconds]: +/- 4.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.002", 86°) * approx speed of asteroid's shadow [km/s]: 8.4859 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1205-00707-1 by 6570 Tomohiro on 2024 Jul 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 -167 0 0 -21 17 20 10 39 6.9 0 72 -81 -21 23 48 -21 10 52 -21 29 47 -21 4 54 .... -166 0 0 -20 58 29 10 39 7.1 1 71 -82 -21 4 57 -20 52 0 -21 10 56 -20 46 1 -0.03 -165 0 0 -20 39 16 10 39 7.5 2 71 -83 -20 45 45 -20 32 47 -20 51 45 -20 26 48 0.01 -164 0 0 -20 19 43 10 39 8.2 3 71 -84 -20 26 13 -20 13 13 -20 32 13 -20 7 13 0.03 -163 0 0 -19 59 49 10 39 9.1 4 70 -85 -20 6 19 -19 53 18 -20 12 20 -19 47 17 0.04 -162 0 0 -19 39 34 10 39 10.2 5 70 -86 -19 46 5 -19 33 3 -19 52 6 -19 27 2 0.05 -161 0 0 -19 18 59 10 39 11.6 6 70 -87 -19 25 31 -19 12 27 -19 31 33 -19 6 25 0.05 -160 0 0 -18 58 4 10 39 13.2 7 69 -88 -19 4 36 -18 51 31 -19 10 39 -18 45 29 0.05 -159 0 0 -18 36 49 10 39 15.0 8 69 -88 -18 43 22 -18 30 16 -18 49 25 -18 24 12 0.05 -158 0 0 -18 15 14 10 39 17.1 10 69 -89 -18 21 48 -18 8 40 -18 27 52 -18 2 37 0.06 -157 0 0 -17 53 20 10 39 19.4 11 68 -88 -17 59 54 -17 46 46 -18 5 59 -17 40 41 0.06 -156 0 0 -17 31 7 10 39 22.0 12 68 -87 -17 37 42 -17 24 32 -17 43 47 -17 18 27 0.06 -155 0 0 -17 8 35 10 39 24.9 13 68 -86 -17 15 11 -17 1 59 -17 21 16 -16 55 54 0.06 -154 0 0 -16 45 44 10 39 28.0 14 67 -85 -16 52 21 -16 39 8 -16 58 27 -16 33 2 0.06 -153 0 0 -16 22 36 10 39 31.3 15 67 -84 -16 29 13 -16 15 59 -16 35 20 -16 9 53 0.06 -152 0 0 -15 59 10 10 39 35.0 16 67 -83 -16 5 47 -15 52 32 -16 11 54 -15 46 25 0.06 -151 0 0 -15 35 26 10 39 38.8 17 66 -82 -15 42 4 -15 28 48 -15 48 12 -15 22 41 0.06 -150 0 0 -15 11 26 10 39 43.0 18 66 -81 -15 18 4 -15 4 47 -15 24 13 -14 58 39 0.06 -149 0 0 -14 47 8 10 39 47.4 19 66 -80 -14 53 48 -14 40 29 -14 59 56 -14 34 21 0.06 -148 0 0 -14 22 35 10 39 52.1 20 66 -79 -14 29 15 -14 15 56 -14 35 24 -14 9 46 0.06 -147 0 0 -13 57 46 10 39 57.0 21 65 -78 -14 4 27 -13 51 6 -14 10 36 -13 44 56 0.06 -146 0 0 -13 32 42 10 40 2.2 22 65 -77 -13 39 23 -13 26 1 -13 45 33 -13 19 51 0.06 -145 0 0 -13 7 23 10 40 7.7 23 65 -76 -13 14 5 -13 0 42 -13 20 15 -12 54 32 0.06 -144 0 0 -12 41 51 10 40 13.4 24 65 -75 -12 48 32 -12 35 9 -12 54 43 -12 28 58 0.06 -143 0 0 -12 16 4 10 40 19.4 25 64 -74 -12 22 46 -12 9 22 -12 28 58 -12 3 10 0.07 -142 0 0 -11 50 4 10 40 25.7 26 64 -73 -11 56 47 -11 43 22 -12 2 59 -11 37 10 0.07 -141 0 0 -11 23 52 10 40 32.2 28 64 -72 -11 30 35 -11 17 9 -11 36 48 -11 10 57 0.07 -140 0 0 -10 57 28 10 40 39.1 29 64 -71 -11 4 12 -10 50 45 -11 10 25 -10 44 32 0.07 -139 0 0 -10 30 53 10 40 46.1 30 63 -70 -10 37 37 -10 24 9 -10 43 50 -10 17 56 0.07 -138 0 0 -10 4 7 10 40 53.5 31 63 -68 -10 10 51 - 9 57 23 -10 17 5 - 9 51 10 0.07 -137 0 0 - 9 37 11 10 41 1.1 32 63 -67 - 9 43 56 - 9 30 27 - 9 50 10 - 9 24 13 0.07 -136 0 0 - 9 10 6 10 41 9.0 33 63 -66 - 9 16 51 - 9 3 21 - 9 23 5 - 8 57 8 0.07 -135 0 0 - 8 42 53 10 41 17.1 34 63 -65 - 8 49 38 - 8 36 7 - 8 55 52 - 8 29 53 0.07 -134 0 0 - 8 15 31 10 41 25.5 35 62 -64 - 8 22 16 - 8 8 46 - 8 28 31 - 8 2 31 0.07 -133 0 0 - 7 48 2 10 41 34.2 36 62 -63 - 7 54 48 - 7 41 17 - 8 1 2 - 7 35 2 0.07 -132 0 0 - 7 20 27 10 41 43.1 38 62 -62 - 7 27 13 - 7 13 41 - 7 33 28 - 7 7 26 0.07 -131 0 0 - 6 52 46 10 41 52.3 39 62 -61 - 6 59 32 - 6 46 0 - 7 5 47 - 6 39 45 0.07 -130 0 0 - 6 25 0 10 42 1.7 40 62 -59 - 6 31 46 - 6 18 14 - 6 38 1 - 6 11 59 0.07 -129 0 0 - 5 57 10 10 42 11.3 41 61 -58 - 6 3 56 - 5 50 24 - 6 10 12 - 5 44 9 0.07 -128 0 0 - 5 29 17 10 42 21.2 42 61 -57 - 5 36 3 - 5 22 31 - 5 42 19 - 5 16 16 0.07 -127 0 0 - 5 1 21 10 42 31.4 43 61 -56 - 5 8 7 - 4 54 35 - 5 14 23 - 4 48 20 0.07 -126 0 0 - 4 33 23 10 42 41.7 44 61 -55 - 4 40 10 - 4 26 37 - 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85 0 0 12 19 11 10 51 47.2 85 333 -9 12 12 45 12 25 37 12 6 47 12 31 34 0.09 - 84 0 0 12 37 26 10 52 1.3 84 323 -8 12 31 0 12 43 51 12 25 3 12 49 47 0.09 - 83 0 0 12 55 15 10 52 15.4 84 313 -7 12 48 50 13 1 40 12 42 55 13 7 36 0.09 - 82 0 0 13 12 40 10 52 29.4 83 306 -6 13 6 16 13 19 4 13 0 21 13 24 59 0.09 - 81 0 0 13 29 40 10 52 43.4 83 299 -5 13 23 16 13 36 3 13 17 22 13 41 58 0.09 - 80 0 0 13 46 14 10 52 57.3 82 295 -3 13 39 51 13 52 37 13 33 57 13 58 31 0.09 - 79 0 0 14 2 23 10 53 11.1 81 291 -2 13 56 1 14 8 45 13 50 7 14 14 38 0.09 - 78 0 0 14 18 6 10 53 24.8 80 287 -1 14 11 44 14 24 27 14 5 52 14 30 20 0.09 - 77 0 0 14 33 23 10 53 38.5 79 285 0 14 27 2 14 39 44 14 21 10 14 45 36 0.09 - 76 0 0 14 48 14 10 53 52.1 78 283 1 14 41 54 14 54 34 14 36 2 15 0 25 0.09 - 75 0 0 15 2 39 10 54 5.6 77 281 2 14 56 19 15 8 59 14 50 29 15 14 49 0.09 - 74 0 0 15 16 38 10 54 19.0 76 279 3 15 10 19 15 22 57 15 4 29 15 28 47 0.09 - 73 0 0 15 30 10 10 54 32.3 75 278 4 15 23 52 15 36 29 15 18 2 15 42 18 0.09 - 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20 0 0 16 55 18 11 3 2.6 23 282 56 16 49 4 17 1 31 16 43 19 17 7 16 0.08 - 19 0 0 16 45 18 11 3 7.6 22 282 57 16 39 3 16 51 32 16 33 18 16 57 17 0.08 - 18 0 0 16 34 53 11 3 12.5 21 282 58 16 28 39 16 41 8 16 22 53 16 46 54 0.08 - 17 0 0 16 24 5 11 3 17.1 20 282 59 16 17 50 16 30 20 16 12 3 16 36 6 0.08 - 16 0 0 16 12 52 11 3 21.5 19 283 60 16 6 36 16 19 7 16 0 49 16 24 54 0.08 - 15 0 0 16 1 15 11 3 25.7 18 283 61 15 54 59 16 7 31 15 49 12 16 13 18 0.08 - 14 0 0 15 49 14 11 3 29.7 17 283 61 15 42 58 15 55 31 15 37 10 16 1 18 0.08 - 13 0 0 15 36 50 11 3 33.5 16 284 62 15 30 33 15 43 7 15 24 45 15 48 55 0.08 - 12 0 0 15 24 2 11 3 37.1 15 284 63 15 17 45 15 30 20 15 11 56 15 36 8 0.08 - 11 0 0 15 10 51 11 3 40.4 14 284 64 15 4 33 15 17 9 14 58 44 15 22 58 0.08 - 10 0 0 14 57 16 11 3 43.5 13 284 65 14 50 58 15 3 35 14 45 8 15 9 24 0.08 - 9 0 0 14 43 19 11 3 46.5 12 285 66 14 37 0 14 49 38 14 31 10 14 55 28 0.08 - 8 0 0 14 28 58 11 3 49.1 11 285 67 14 22 39 14 35 18 14 16 48 14 41 9 0.07 - 7 0 0 14 14 15 11 3 51.6 10 285 68 14 7 55 14 20 35 14 2 4 14 26 27 0.07 - 6 0 0 13 59 10 11 3 53.8 9 285 69 13 52 49 14 5 31 13 46 57 14 11 22 0.07 - 5 0 0 13 43 42 11 3 55.8 8 286 70 13 37 21 13 50 3 13 31 29 13 55 55 0.07 - 4 0 0 13 27 52 11 3 57.6 7 286 71 13 21 30 13 34 14 13 15 38 13 40 7 0.07 - 3 0 0 13 11 41 11 3 59.2 6 286 71 13 5 18 13 18 3 12 59 25 13 23 56 0.07 - 2 0 0 12 55 8 11 4 0.5 5 286 72 12 48 45 13 1 31 12 42 51 13 7 24 0.07 - 1 0 0 12 38 13 11 4 1.5 4 286 73 12 31 50 12 44 37 12 25 55 12 50 31 0.06 0 0 0 12 20 58 11 4 2.4 3 287 74 12 14 34 12 27 22 12 8 39 12 33 17 0.06 1 0 0 12 3 22 11 4 3.0 2 287 75 11 56 57 12 9 46 11 51 2 12 15 42 0.04 2 0 0 11 45 25 11 4 3.3 1 287 75 11 39 0 11 51 50 11 33 4 11 57 46 0.01 3 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 11 39 30 .... Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 15.2 Data for the target star ------------------------ * name: TYC 1205-00707-1 * constellation : Pisces * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 01 38 43.9100 DE: +16 49 28.587 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 01 38 43.9102 DE: +16 49 28.588 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.7 * B mag [mag]: 10.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (6570) Tomohiro asteroid class: approx. diameter [km]: 23 approx. diameter ["]: 0.009 distance from Earth [AU]: 3.33440 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#49 date of fit: 2022 Nov 26 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", 86.394° remarks: * orbital elements for (6570)Tomohiro : Mean anomaly = 199.2470059182 deg Arg. of pericenter = 322.9885927192 deg Long. of node = 215.3439181581 deg Inclination = 14.4331908396 deg Eccentricity = 0.1683477702 Semimajor axis = 3.1338732011 AU Perihelion dist = 2.6062926354 AU Mag: H = 12.18, G = 0.15 Epoch of elements : MJD 60522.45247859 TDT (2024 Jul 31.4525) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#492022Nov26,2.66,2024,7,31,10.859458,0.025695,-0.086971,4.577433,1.409959,-0.005248,-0.002149,0.000000,0.000000 -87.4319,16.9494,18.71,18.08,False TYC 1205-00707-1,1.64553053,16.8246074,10.94,10.72,10.60,0.0,0,,1.66769255,16.9494340,7.75,7.42,0,0,0 6570,Tomohiro,18.47,22.577,3.3344,0,0,0.842,3.72,,1.6,0 0,199.1666,2024,7,31,322.9886,215.3439,14.4332,0.16835,3.13387,2.60629,12.18,5.0,0.15 1.462,0.0153,0.0025,86,0.0043,Known errors,0.94,0,-1,-1 20240731_0707-1,60140.23 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 05:25 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org