IOTA/IOTA-ES occultation update for (150) Nuwa / TYC 6188-00604-1 event on 2023 Jun 05, 10:33 UT Visible from New Zealand, Australia Summary ------- On 2023 Jun 05 UT, the 137.2 km diameter asteroid (150) Nuwa will occult a 12.1 mag star in the constellation Libra for observers along a path across New Zealand, Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.46 mag to 13.19 mag (the magnitude of the asteroid) for at most 11.750 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: 100 * date and approx. time of event: 2023 Jun 05, 10:25 - 2023 Jun 05, 10:42 * geocentric midpoint of event [JD]: 2460100.94027995 * magnitude of target star: 12.06 * magnitude drop [mag]: 1.46 * estimated maximum duration [s]: 11.750 * Moon: 98 % sunlit, 37° distance * Sun: 160° distance * rough path description: New Zealand, Australia The occultation path -------------------- * approximate projected width [km]: 150 * 1 sigma uncertainty interval [path widths]: +/- 0.05 * 1 sigma uncertainty interval [seconds]: +/- 3.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.023, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.024", 0.004", 102°) * approx speed of asteroid's shadow [km/s]: 11.6806 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6188-00604-1 by 150 Nuwa on 2023 Jun 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 86 0 0 .. .. .... .. .. .. .. .. .. .. .. .. - 8 47 31 .. .. .. - 8 51 55 .... 87 0 0 - 8 23 49 10 42 19.9 1 107 17 - 7 41 27 - 9 6 25 - 7 37 6 - 9 10 49 .... 88 0 0 - 8 42 58 10 42 19.7 2 107 16 - 8 0 33 - 9 25 38 - 7 56 11 - 9 30 3 0.37 89 0 0 - 9 2 27 10 42 19.2 3 107 15 - 8 19 57 - 9 45 11 - 8 15 35 - 9 49 37 0.39 90 0 0 - 9 22 15 10 42 18.5 4 107 14 - 8 39 41 -10 5 3 - 8 35 18 -10 9 29 0.40 91 0 0 - 9 42 20 10 42 17.7 5 107 13 - 8 59 42 -10 25 13 - 8 55 19 -10 29 39 0.41 92 0 0 -10 2 44 10 42 16.6 6 106 12 - 9 20 2 -10 45 40 - 9 15 39 -10 50 7 0.41 93 0 0 -10 23 25 10 42 15.3 7 106 11 - 9 40 39 -11 6 25 - 9 36 15 -11 10 53 0.41 94 0 0 -10 44 23 10 42 13.9 8 106 9 -10 1 33 -11 27 28 - 9 57 9 -11 31 55 0.41 95 0 0 -11 5 38 10 42 12.3 9 106 8 -10 22 44 -11 48 46 -10 18 19 -11 53 14 0.42 96 0 0 -11 27 8 10 42 10.4 10 106 7 -10 44 11 -12 10 21 -10 39 45 -12 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11 44 -45 34 14 -44 7 30 -45 38 31 0.44 -106 0 0 -44 44 15 10 26 38.2 25 270 -43 -44 3 3 -45 25 39 -43 58 49 -45 29 56 0.44 -105 0 0 -44 35 18 10 26 35.1 24 269 -42 -43 54 4 -45 16 46 -43 49 49 -45 21 4 0.44 -104 0 0 -44 26 3 10 26 32.0 24 269 -42 -43 44 45 -45 7 34 -43 40 30 -45 11 52 0.44 -103 0 0 -44 16 29 10 26 29.0 23 268 -41 -43 35 8 -44 58 3 -43 30 52 -45 2 22 0.44 -102 0 0 -44 6 36 10 26 26.1 22 267 -40 -43 25 11 -44 48 14 -43 20 55 -44 52 32 0.44 -101 0 0 -43 56 23 10 26 23.2 21 266 -40 -43 14 55 -44 38 5 -43 10 39 -44 42 24 0.45 -100 0 0 -43 45 52 10 26 20.5 21 266 -39 -43 4 20 -44 27 37 -43 0 4 -44 31 57 0.45 - 99 0 0 -43 35 1 10 26 17.8 20 265 -38 -42 53 26 -44 16 50 -42 49 9 -44 21 10 0.45 - 98 0 0 -43 23 51 10 26 15.2 19 264 -38 -42 42 12 -44 5 44 -42 37 55 -44 10 4 0.45 - 97 0 0 -43 12 22 10 26 12.6 19 264 -37 -42 30 39 -43 54 19 -42 26 22 -43 58 40 0.45 - 96 0 0 -43 0 34 10 26 10.2 18 263 -36 -42 18 47 -43 42 35 -42 14 29 -43 46 56 0.45 - 95 0 0 -42 48 26 10 26 7.8 17 262 -35 -42 6 35 -43 30 31 -42 2 17 -43 34 52 0.45 - 94 0 0 -42 35 59 10 26 5.5 16 261 -35 -41 54 4 -43 18 8 -41 49 45 -43 22 29 0.45 - 93 0 0 -42 23 12 10 26 3.3 16 261 -34 -41 41 13 -43 5 25 -41 36 54 -43 9 47 0.45 - 92 0 0 -42 10 6 10 26 1.2 15 260 -33 -41 28 3 -42 52 23 -41 23 43 -42 56 46 0.45 - 91 0 0 -41 56 41 10 25 59.2 14 259 -32 -41 14 33 -42 39 2 -41 10 13 -42 43 25 0.45 - 90 0 0 -41 42 55 10 25 57.3 13 259 -32 -41 0 44 -42 25 21 -40 56 24 -42 29 45 0.45 - 89 0 0 -41 28 51 10 25 55.5 12 258 -31 -40 46 35 -42 11 21 -40 42 14 -42 15 45 0.45 - 88 0 0 -41 14 27 10 25 53.8 12 257 -30 -40 32 7 -41 57 1 -40 27 45 -42 1 25 0.46 - 87 0 0 -40 59 43 10 25 52.2 11 257 -29 -40 17 19 -41 42 22 -40 12 57 -41 46 46 0.46 - 86 0 0 -40 44 40 10 25 50.6 10 256 -29 -40 2 11 -41 27 23 -39 57 49 -41 31 48 0.46 - 85 0 0 -40 29 17 10 25 49.2 9 255 -28 -39 46 44 -41 12 4 -39 42 21 -41 16 30 0.46 - 84 0 0 -40 13 35 10 25 47.9 9 255 -27 -39 30 57 -40 56 27 -39 26 34 -41 0 53 0.46 - 83 0 0 -39 57 33 10 25 46.7 8 254 -26 -39 14 51 -40 40 29 -39 10 28 -40 44 56 0.47 - 82 0 0 -39 41 12 10 25 45.6 7 253 -25 -38 58 26 -40 24 13 -38 54 2 -40 28 40 0.47 - 81 0 0 -39 24 31 10 25 44.6 6 253 -25 -38 41 41 -40 7 36 -38 37 16 -40 12 4 0.48 - 80 0 0 -39 7 31 10 25 43.8 5 252 -24 -38 24 37 -39 50 41 -38 20 12 -39 55 9 0.49 - 79 0 0 -38 50 12 10 25 43.0 4 252 -23 -38 7 13 -39 33 26 -38 2 48 -39 37 55 0.50 - 78 0 0 -38 32 34 10 25 42.4 4 251 -22 -37 49 30 -39 15 52 -37 45 5 -39 20 21 0.51 - 77 0 0 -38 14 36 10 25 41.9 3 250 -21 -37 31 28 -38 57 59 -37 27 2 -39 2 28 0.54 - 76 0 0 -37 56 20 10 25 41.5 2 250 -21 -37 13 8 -38 39 47 -37 8 41 -38 44 17 0.59 - 75 0 0 -37 37 44 10 25 41.3 1 249 -20 -36 54 28 -38 21 16 -36 50 1 -38 25 46 0.72 - 74 0 0 -37 18 50 10 25 41.2 0 248 -19 .. .. .. -38 2 26 .. .. .. -38 6 57 1.72 Uncertainty in time = +/- 3 secs Prediction of 2023 Apr 29.2 Data for the target star ------------------------ * name: TYC 6188-00604-1 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 15 29 54.0143 DE: -17 06 19.056 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 15 29 54.0142 DE: -17 06 19.056 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 12.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (150) Nuwa asteroid class: approx. diameter [km]: 137 approx. diameter ["]: 0.088 distance from Earth [AU]: 2.15530 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#109 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): 0.024", 0.004", 102.131° remarks: * orbital elements for (150)Nuwa : Mean anomaly = 253.5885711108 deg Arg. of pericenter = 153.9457584856 deg Long. of node = 206.1057450403 deg Inclination = 2.2021005511 deg Eccentricity = 0.1237435619 Semimajor axis = 2.9842939284 AU Perihelion dist = 2.6150067681 AU Mag: H = 8.52, G = 0.15 Epoch of elements : MJD 60100.44020833 TDT (2023 Jun 05.4402) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1092023Apr24,11.75,2023,6,5,10.566719,-0.106246,-0.388440,-6.359001,1.740365,0.001801,-0.000616,0.000001,0.000000 -179.2895,-17.1866,21.12,22.54,False TYC 6188-00604-1,15.49833730,-17.1052935,0.00,12.06,0.00,0.0,0,,15.52063279,-17.1865839,1.46,0.00,0,0,0 150,Nuwa,13.19,137.2,2.1553,0,0,-1.809,7.10,,7.8,0 0,253.5044,2023,6,5,153.9458,206.1057,2.2021,0.12374,2.98429,2.61501,8.56,5.0,0.15 1.052,0.0240,0.0043,102,0.0045,Known errors,-1.00,-1,-1,-1 20230605_0604-1,60063.19 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Apr 29, 04:34 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org