IOTA/IOTA-ES occultation update for (1256) Normannia / G162058.0-213121 event on 2023 Apr 11, 12:28 UT Visible from Australia Summary ------- On 2023 Apr 11 UT, the 70 km diameter asteroid (1256) Normannia will occult a 10.3 mag star in the constellation Scorpius for observers along a path across Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 5.64 mag to 15.94 mag (the magnitude of the asteroid) for at most 12.580 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: 2023 Apr 11, 12:15 - 2023 Apr 11, 12:42 * geocentric midpoint of event [JD]: 2460046.02010312 * magnitude of target star: 10.31 * magnitude drop [mag]: 5.64 * estimated maximum duration [s]: 12.580 * Moon: 71 % sunlit, 19° distance * Sun: 134° distance * rough path description: Australia The occultation path -------------------- * approximate projected width [km]: 100 * 1 sigma uncertainty interval [path widths]: +/- 0.13 * 1 sigma uncertainty interval [seconds]: +/- 5.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.003", 98°) * approx speed of asteroid's shadow [km/s]: 5.5644 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of G162058.0-213121 by 1256 Normannia on 2023 Apr 11 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 116 0 0 -23 19 43 12 42 19.3 0 113 -37 -22 50 52 -23 48 50 .. .. .. -23 56 35 .... 117 0 0 -23 44 23 12 42 18.9 1 113 -37 -23 15 24 -24 13 37 -23 7 47 -24 21 24 0.72 118 0 0 -24 9 38 12 42 18.1 2 113 -38 -23 40 32 -24 39 0 -23 32 53 -24 46 48 0.84 119 0 0 -24 35 28 12 42 16.7 3 112 -39 -24 6 15 -25 4 57 -23 58 34 -25 12 48 0.88 120 0 0 -25 1 52 12 42 14.8 4 112 -40 -24 32 31 -25 31 29 -24 24 49 -25 39 22 0.90 121 0 0 -25 28 49 12 42 12.4 5 111 -41 -24 59 21 -25 58 35 -24 51 36 -26 6 29 0.92 122 0 0 -25 56 20 12 42 9.6 6 111 -41 -25 26 44 -26 26 13 -25 18 57 -26 34 10 0.93 123 0 0 -26 24 22 12 42 6.2 7 111 -42 -25 54 38 -26 54 24 -25 46 49 -27 2 23 0.93 124 0 0 -26 52 56 12 42 2.4 8 110 -43 -26 23 4 -27 23 6 -26 15 13 -27 31 8 0.94 125 0 0 -27 22 1 12 41 58.0 9 110 -44 -26 52 0 -27 52 19 -26 44 7 -28 0 23 0.94 126 0 0 -27 51 35 12 41 53.2 10 109 -44 -27 21 26 -28 22 3 -27 13 30 -28 30 9 0.94 127 0 0 -28 21 38 12 41 47.9 11 109 -45 -27 51 20 -28 52 15 -27 43 23 -29 0 24 0.95 128 0 0 -28 52 10 12 41 42.2 12 108 -46 -28 21 43 -29 22 55 -28 13 43 -29 31 7 0.95 129 0 0 -29 23 8 12 41 36.0 13 108 -46 -28 52 33 -29 54 3 -28 44 30 -30 2 17 0.95 130 0 0 -29 54 33 12 41 29.3 14 107 -47 -29 23 49 -30 25 38 -29 15 44 -30 33 54 0.95 131 0 0 -30 26 24 12 41 22.1 15 107 -47 -29 55 30 -30 57 38 -29 47 23 -31 5 56 0.95 132 0 0 -30 58 39 12 41 14.6 16 106 -48 -30 27 36 -31 30 2 -30 19 26 -31 38 24 0.95 133 0 0 -31 31 18 12 41 6.5 17 105 -49 -31 0 5 -32 2 51 -30 51 53 -32 11 15 0.96 134 0 0 -32 4 19 12 40 58.1 18 105 -49 -31 32 57 -32 36 2 -31 24 43 -32 44 29 0.96 135 0 0 -32 37 42 12 40 49.2 19 104 -50 -32 6 10 -33 9 35 -31 57 53 -33 18 4 0.96 136 0 0 -33 11 25 12 40 40.0 20 103 -50 -32 39 44 -33 43 28 -32 31 25 -33 52 0 0.96 137 0 0 -33 45 28 12 40 30.3 21 103 -50 -33 13 37 -34 17 41 -33 5 16 -34 26 16 0.96 138 0 0 -34 19 50 12 40 20.2 21 102 -51 -33 47 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53 0 0 -72 29 50 12 17 42.1 22 268 3 -72 0 3 -72 59 55 -71 52 14 -73 7 55 1.02 - 52 0 0 -72 20 42 12 17 38.5 22 267 4 -71 50 46 -72 50 56 -71 42 55 -72 58 59 1.02 - 51 0 0 -72 11 15 12 17 35.0 21 266 4 -71 41 10 -72 41 38 -71 33 16 -72 49 43 1.02 - 50 0 0 -72 1 28 12 17 31.4 21 265 4 -71 31 15 -72 32 1 -71 23 19 -72 40 9 1.02 - 49 0 0 -71 51 22 12 17 27.8 21 264 5 -71 21 0 -72 22 5 -71 13 1 -72 30 15 1.02 - 48 0 0 -71 40 56 12 17 24.3 20 263 5 -71 10 24 -72 11 49 -71 2 23 -72 20 2 1.02 - 47 0 0 -71 30 9 12 17 20.7 20 262 5 -70 59 28 -72 1 12 -70 51 24 -72 9 28 1.02 - 46 0 0 -71 19 2 12 17 17.1 20 261 6 -70 48 10 -71 50 14 -70 40 4 -71 58 33 1.02 - 45 0 0 -71 7 32 12 17 13.6 19 260 6 -70 36 30 -71 38 55 -70 28 22 -71 47 17 1.02 - 44 0 0 -70 55 41 12 17 10.0 19 259 6 -70 24 29 -71 27 14 -70 16 17 -71 35 38 1.02 - 43 0 0 -70 43 27 12 17 6.5 19 258 7 -70 12 4 -71 15 11 -70 3 50 -71 23 38 1.02 - 42 0 0 -70 30 49 12 17 2.9 18 257 7 -69 59 17 -71 2 44 -69 51 0 -71 11 14 1.02 - 41 0 0 -70 17 49 12 16 59.4 18 256 8 -69 46 6 -70 49 54 -69 37 46 -70 58 27 1.02 - 40 0 0 -70 4 24 12 16 55.9 17 255 8 -69 32 30 -70 36 41 -69 24 8 -70 45 17 1.02 - 39 0 0 -69 50 34 12 16 52.4 17 254 8 -69 18 30 -70 23 2 -69 10 5 -70 31 41 1.02 - 38 0 0 -69 36 19 12 16 48.9 17 253 9 -69 4 4 -70 8 58 -68 55 36 -70 17 40 1.03 - 37 0 0 -69 21 39 12 16 45.4 16 252 9 -68 49 13 -69 54 29 -68 40 42 -70 3 14 1.03 - 36 0 0 -69 6 32 12 16 42.0 16 251 9 -68 33 55 -69 39 34 -68 25 22 -69 48 22 1.03 - 35 0 0 -68 50 58 12 16 38.5 15 250 10 -68 18 10 -69 24 11 -68 9 34 -69 33 2 1.03 - 34 0 0 -68 34 57 12 16 35.2 15 249 10 -68 1 58 -69 8 21 -67 53 19 -69 17 15 1.03 - 33 0 0 -68 18 27 12 16 31.8 15 248 11 -67 45 18 -68 52 3 -67 36 36 -69 1 1 1.03 - 32 0 0 -68 1 30 12 16 28.5 14 247 11 -67 28 9 -68 35 17 -67 19 24 -68 44 17 1.03 - 31 0 0 -67 44 2 12 16 25.2 14 246 12 -67 10 31 -68 18 1 -67 1 43 -68 27 4 1.03 - 30 0 0 -67 26 6 12 16 22.0 13 245 12 -66 52 23 -68 0 15 -66 43 33 -68 9 22 1.03 - 29 0 0 -67 7 38 12 16 18.8 13 244 12 -66 33 45 -67 41 59 -66 24 52 -67 51 9 1.03 - 28 0 0 -66 48 40 12 16 15.7 12 244 13 -66 14 36 -67 23 13 -66 5 40 -67 32 25 1.03 - 27 0 0 -66 29 11 12 16 12.6 12 243 13 -65 54 56 -67 3 54 -65 45 58 -67 13 10 1.03 - 26 0 0 -66 9 10 12 16 9.6 11 242 14 -65 34 44 -66 44 4 -65 25 43 -66 53 23 1.04 - 25 0 0 -65 48 36 12 16 6.7 11 241 14 -65 14 0 -66 23 41 -65 4 56 -66 33 3 1.04 - 24 0 0 -65 27 29 12 16 3.9 10 240 15 -64 52 43 -66 2 45 -64 43 37 -66 12 9 1.04 - 23 0 0 -65 5 49 12 16 1.2 10 239 15 -64 30 53 -65 41 15 -64 21 44 -65 50 42 1.04 - 22 0 0 -64 43 35 12 15 58.5 9 238 16 -64 8 29 -65 19 11 -63 59 18 -65 28 41 1.05 - 21 0 0 -64 20 47 12 15 56.0 9 237 16 -63 45 32 -64 56 33 -63 36 17 -65 6 6 1.05 - 20 0 0 -63 57 24 12 15 53.6 8 236 17 -63 21 59 -64 33 19 -63 12 42 -64 42 55 1.05 - 19 0 0 -63 33 25 12 15 51.3 7 235 17 -62 57 52 -64 9 31 -62 48 33 -64 19 9 1.06 - 18 0 0 -63 8 52 12 15 49.1 7 234 18 -62 33 10 -63 45 6 -62 23 48 -63 54 47 1.07 - 17 0 0 -62 43 42 12 15 47.1 6 234 18 -62 7 52 -63 20 6 -61 58 28 -63 29 48 1.07 - 16 0 0 -62 17 57 12 15 45.2 6 233 19 -61 41 58 -62 54 29 -61 32 33 -63 4 14 1.08 - 15 0 0 -61 51 36 12 15 43.5 5 232 19 -61 15 29 -62 28 15 -61 6 2 -62 38 2 1.10 - 14 0 0 -61 24 38 12 15 42.0 4 231 20 -60 48 24 -62 1 25 -60 38 55 -62 11 14 1.12 - 13 0 0 -60 57 3 12 15 40.7 4 230 20 -60 20 43 -61 33 58 -60 11 12 -61 43 49 1.14 - 12 0 0 -60 28 52 12 15 39.6 3 229 21 -59 52 26 -61 5 53 -59 42 53 -61 15 46 1.18 - 11 0 0 -60 0 5 12 15 38.6 2 228 22 -59 23 32 -60 37 12 -59 13 58 -60 47 7 1.25 - 10 0 0 -59 30 41 12 15 38.0 1 227 22 -58 54 3 -60 7 54 -58 44 27 -60 17 50 1.38 - 9 0 0 -59 0 41 12 15 37.5 1 227 23 -58 23 58 -59 37 59 -58 14 21 -59 47 57 1.75 - 8 0 0 -58 30 5 12 15 37.3 0 226 23 .. .. .. -59 7 28 .. .. .. -59 17 27 17.36 Uncertainty in time = +/- 5 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: G162058.0-213121 * constellation : Scorpius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 16 20 58.0220 DE: -21 31 19.208 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 16 20 58.0220 DE: -21 31 19.209 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.500,0.400) * V mag [mag]: 10.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1256) Normannia asteroid class: approx. diameter [km]: 70 approx. diameter ["]: 0.030 distance from Earth [AU]: 3.17380 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 date of fit: 2023 Feb 07 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): 0.013", 0.003", 97.777° remarks: * orbital elements for (1256)Normannia : Mean anomaly = 266.6221539323 deg Arg. of pericenter = 102.0356618969 deg Long. of node = 236.8674228101 deg Inclination = 4.1753256130 deg Eccentricity = 0.0795483506 Semimajor axis = 3.8936205687 AU Perihelion dist = 3.5838894747 AU Mag: H = 9.77, G = 0.15 Epoch of elements : MJD 60045.52000000 TDT (2023 Apr 11.5200) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Feb07,12.58,2023,4,11,12.482475,-0.250396,-0.667805,-2.940638,1.102973,-0.004201,0.000705,0.000001,0.000000 -141.1160,-21.5780,-6.96,8.33,False G162058.0-213121,16.34945055,-21.5220023,0.00,10.31,0.00,0.0,4,,16.37247731,-21.5780411,5.64,0.00,0,0,0 1256,Normannia,15.94,70.0,3.1738,0,0,-0.584,3.06,,4.0,0 0,266.5554,2023,4,11,102.0357,236.8674,4.1753,0.07955,3.89362,3.58389,9.79,5.0,0.15 1.132,0.0127,0.0029,98,0.0040,Known errors,-1.00,-1,-1,-1 20230411_213121,59990.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:59 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org