IOTA/IOTA-ES occultation update for (22719) Nakadori / UCAC4 372-070389 event on 2024 Jan 02, 03:05 UT Visible from Summary ------- On 2024 Jan 02 UT, the 13.0131038777235 km diameter asteroid (22719) Nakadori will occult a 11.7 mag star in the constellation Libra for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.04 mag to 18.78 mag (the magnitude of the asteroid) for at most 0.350 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 02, 03:02 - 2024 Jan 02, 03:08 * geocentric midpoint of event [JD]: 2460311.62897425 * magnitude of target star: 11.74 * magnitude drop [mag]: 7.04 * estimated maximum duration [s]: 0.350 * Moon: 68 % sunlit, 64° distance * Sun: 48° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 13 * 1 sigma uncertainty interval [path widths]: +/- 0.25 * 1 sigma uncertainty interval [seconds]: +/- 0.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.010", 0.001", 110°) * approx speed of asteroid's shadow [km/s]: 37.9681 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 372-070389 by 22719 Nakadori on 2024 Jan 2 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 2 0 0 21 39 50 3 2 56.6 0 107 -47 21 36 3 21 43 37 21 34 9 21 45 31 .... 3 0 0 21 22 18 3 2 56.7 1 108 -46 21 18 30 21 26 5 21 16 36 21 27 59 0.00 4 0 0 21 4 28 3 2 56.8 2 108 -45 21 0 40 21 8 16 20 58 46 21 10 9 -0.05 5 0 0 20 46 20 3 2 56.9 3 108 -44 20 42 32 20 50 8 20 40 38 20 52 2 -0.07 6 0 0 20 27 55 3 2 57.1 4 109 -43 20 24 6 20 31 43 20 22 12 20 33 38 -0.08 7 0 0 20 9 12 3 2 57.4 5 109 -42 20 5 24 20 13 1 20 3 29 20 14 56 -0.09 8 0 0 19 50 13 3 2 57.6 6 109 -41 19 46 24 19 54 2 19 44 30 19 55 57 -0.10 9 0 0 19 30 58 3 2 58.0 7 110 -40 19 27 8 19 34 47 19 25 13 19 36 42 -0.10 10 0 0 19 11 25 3 2 58.4 8 110 -39 19 7 36 19 15 15 19 5 41 19 17 10 -0.10 11 0 0 18 51 37 3 2 58.8 9 110 -38 18 47 47 18 55 27 18 45 52 18 57 22 -0.10 12 0 0 18 31 33 3 2 59.3 10 111 -37 18 27 43 18 35 24 18 25 48 18 37 19 -0.11 13 0 0 18 11 14 3 2 59.9 11 111 -36 18 7 24 18 15 5 18 5 28 18 17 0 -0.11 14 0 0 17 50 40 3 3 0.5 12 111 -35 17 46 49 17 54 31 17 44 54 17 56 26 -0.11 15 0 0 17 29 51 3 3 1.2 13 112 -34 17 25 59 17 33 42 17 24 4 17 35 37 -0.11 16 0 0 17 8 47 3 3 1.9 14 112 -33 17 4 56 17 12 38 17 3 0 17 14 34 -0.11 17 0 0 16 47 29 3 3 2.7 15 112 -32 16 43 38 16 51 21 16 41 42 16 53 17 -0.11 18 0 0 16 25 58 3 3 3.5 16 113 -31 16 22 6 16 29 50 16 20 10 16 31 46 -0.11 19 0 0 16 4 14 3 3 4.4 17 113 -30 16 0 21 16 8 6 15 58 25 16 10 2 -0.11 20 0 0 15 42 16 3 3 5.3 18 113 -29 15 38 24 15 46 8 15 36 28 15 48 5 -0.11 21 0 0 15 20 6 3 3 6.3 19 113 -28 15 16 14 15 23 59 15 14 18 15 25 55 -0.11 22 0 0 14 57 44 3 3 7.4 21 114 -27 14 53 52 15 1 37 14 51 55 15 3 34 -0.11 23 0 0 14 35 11 3 3 8.5 22 114 -26 14 31 18 14 39 4 14 29 22 14 41 1 -0.11 24 0 0 14 12 27 3 3 9.6 23 114 -25 14 8 33 14 16 20 14 6 37 14 18 16 -0.11 25 0 0 13 49 31 3 3 10.8 24 114 -24 13 45 38 13 53 25 13 43 41 13 55 21 -0.11 26 0 0 13 26 26 3 3 12.1 25 115 -23 13 22 33 13 30 20 13 20 36 13 32 16 -0.12 27 0 0 13 3 11 3 3 13.4 26 115 -21 12 59 18 13 7 5 12 57 21 13 9 2 -0.12 28 0 0 12 39 47 3 3 14.8 27 115 -20 12 35 53 12 43 41 12 33 56 12 45 38 -0.12 29 0 0 12 16 14 3 3 16.3 28 116 -19 12 12 20 12 20 8 12 10 23 12 22 5 -0.12 30 0 0 11 52 34 3 3 17.7 29 116 -18 11 48 39 11 56 28 11 46 42 11 58 25 -0.12 31 0 0 11 28 45 3 3 19.3 30 116 -17 11 24 51 11 32 40 11 22 54 11 34 37 -0.12 32 0 0 11 4 50 3 3 20.9 31 116 -16 11 0 55 11 8 44 10 58 58 11 10 41 -0.12 33 0 0 10 40 48 3 3 22.5 32 117 -15 10 36 53 10 44 42 10 34 56 10 46 40 -0.12 34 0 0 10 16 40 3 3 24.2 33 117 -14 10 12 46 10 20 35 10 10 48 10 22 32 -0.12 35 0 0 9 52 27 3 3 26.0 34 117 -13 9 48 32 9 56 22 9 46 35 9 58 19 -0.12 36 0 0 9 28 9 3 3 27.8 35 117 -12 9 24 15 9 32 4 9 22 17 9 34 1 -0.12 37 0 0 9 3 47 3 3 29.6 36 117 -11 8 59 52 9 7 42 8 57 55 9 9 39 -0.12 38 0 0 8 39 22 3 3 31.6 37 118 -10 8 35 27 8 43 16 8 33 29 8 45 14 -0.12 39 0 0 8 14 53 3 3 33.5 39 118 -9 8 10 58 8 18 48 8 9 1 8 20 45 -0.12 40 0 0 7 50 22 3 3 35.5 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57 -10 30 30 -10 23 4 -10 32 22 -10 21 12 -0.12 167 0 0 -10 12 42 3 8 27.7 9 255 56 -10 16 25 -10 8 58 -10 18 17 -10 7 6 -0.12 168 0 0 - 9 58 16 3 8 28.2 8 255 55 -10 1 59 - 9 54 32 -10 3 51 - 9 52 40 -0.12 169 0 0 - 9 43 29 3 8 28.6 7 255 54 - 9 47 13 - 9 39 45 - 9 49 5 - 9 37 53 -0.12 170 0 0 - 9 28 23 3 8 28.9 6 255 53 - 9 32 7 - 9 24 39 - 9 33 59 - 9 22 46 -0.12 171 0 0 - 9 12 56 3 8 29.2 5 255 52 - 9 16 41 - 9 9 12 - 9 18 33 - 9 7 20 -0.12 172 0 0 - 8 57 10 3 8 29.4 4 255 51 - 9 0 55 - 8 53 25 - 9 2 48 - 8 51 33 -0.12 173 0 0 - 8 41 4 3 8 29.6 3 254 50 - 8 44 50 - 8 37 19 - 8 46 42 - 8 35 27 -0.11 174 0 0 - 8 24 39 3 8 29.8 2 254 49 - 8 28 25 - 8 20 54 - 8 30 18 - 8 19 1 -0.11 175 0 0 - 8 7 55 3 8 29.8 1 254 48 - 8 11 41 - 8 4 10 - 8 13 34 - 8 2 17 -0.09 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: UCAC4 372-070389 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 15 27 06.9505 DE: -15 47 47.801 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 15 27 06.9505 DE: -15 47 47.801 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.7 * B mag [mag]: 13.2 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (22719) Nakadori asteroid class: approx. diameter [km]: 13 approx. diameter ["]: 0.005 distance from Earth [AU]: 3.28010 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#43 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): 0.010", 0.001", 110.23° remarks: * orbital elements for (22719)Nakadori : Mean anomaly = 301.9516219406 deg Arg. of pericenter = 206.0980396182 deg Long. of node = 71.6776912225 deg Inclination = 6.3279807547 deg Eccentricity = 0.0201352008 Semimajor axis = 2.7431519137 AU Perihelion dist = 2.6879179992 AU Mag: H = 13.19, G = 0.15 Epoch of elements : MJD 60311.12897429 TDT (2024 Jan 02.1290) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#432023Apr25,0.35,2024,1,2,3.095382,0.034119,0.120868,20.667199,-5.667692,-0.004163,0.001260,-0.000001,0.000000 84.4157,-15.8796,134.48,-22.97,False UCAC4 372-070389,15.45193064,-15.7966110,13.15,11.74,10.98,0.1,4,,15.47402863,-15.8796319,7.04,7.35,0,0,0 22719,Nakadori,18.78,13.251,3.2801,0,0,3.841,-15.20,,1.2,0 0,301.9236,2024,1,2,206.0980,71.6777,6.3280,0.02014,2.74315,2.68792,13.18,5.0,0.15 1.250,0.0103,0.0011,110,0.0014,Known errors,1.37,0,-1,-1 20240102_070389,60137.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 11, 23:53 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org