IOTA/IOTA-ES occultation update for (1263) Varsavia / UCAC4 391-039606 event on 2023 Nov 03, 17:23 UT Visible from Australia Summary ------- On 2023 Nov 03 UT, the 49.1 km diameter asteroid (1263) Varsavia will occult a 12.2 mag star in the constellation Puppis 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 2.35 mag to 14.45 mag (the magnitude of the asteroid) for at most 3.270 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 Nov 03, 17:17 - 2023 Nov 03, 17:29 * geocentric midpoint of event [JD]: 2460252.22473300 * magnitude of target star: 12.23 * magnitude drop [mag]: 2.35 * estimated maximum duration [s]: 3.270 * Moon: 65 % sunlit, 38° distance * Sun: 95° distance * rough path description: Australia Additional comments ------------------- RUWE The occultation path -------------------- * approximate projected width [km]: 62 * 1 sigma uncertainty interval [path widths]: +/- 0.33 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.001", 73°) * approx speed of asteroid's shadow [km/s]: 15.0009 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 391-039606 by 1263 Varsavia on 2023 Nov 3 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 88 0 0 - 3 5 44 17 18 0.1 0 102 -70 - 3 23 2 - 2 48 29 - 3 34 28 - 2 37 10 .... 89 0 0 - 3 19 11 17 18 0.3 1 102 -70 - 3 36 33 - 3 1 54 - 3 48 1 - 2 50 33 0.55 90 0 0 - 3 33 28 17 18 0.6 2 102 -70 - 3 50 53 - 3 16 7 - 4 2 24 - 3 4 44 0.65 91 0 0 - 3 48 34 17 18 1.1 3 102 -70 - 4 6 3 - 3 31 10 - 4 17 36 - 3 19 44 0.69 92 0 0 - 4 4 30 17 18 1.7 4 102 -70 - 4 22 2 - 3 47 2 - 4 33 38 - 3 35 33 0.71 93 0 0 - 4 21 15 17 18 2.6 5 102 -70 - 4 38 52 - 4 3 43 - 4 50 30 - 3 52 12 0.73 94 0 0 - 4 38 51 17 18 3.6 7 102 -70 - 4 56 32 - 4 21 14 - 5 8 13 - 4 9 41 0.73 95 0 0 - 4 57 16 17 18 4.8 8 101 -70 - 5 15 2 - 4 39 36 - 5 26 46 - 4 27 59 0.74 96 0 0 - 5 16 33 17 18 6.2 9 101 -70 - 5 34 23 - 4 58 47 - 5 46 10 - 4 47 8 0.75 97 0 0 - 5 36 40 17 18 7.7 10 101 -69 - 5 54 34 - 5 18 49 - 6 6 25 - 5 7 7 0.75 98 0 0 - 5 57 37 17 18 9.5 11 101 -69 - 6 15 37 - 5 39 42 - 6 27 31 - 5 27 56 0.76 99 0 0 - 6 19 26 17 18 11.5 12 101 -68 - 6 37 32 - 6 1 26 - 6 49 29 - 5 49 37 0.76 100 0 0 - 6 42 7 17 18 13.6 13 101 -68 - 7 0 17 - 6 24 1 - 7 12 19 - 6 12 8 0.76 101 0 0 - 7 5 39 17 18 15.9 14 101 -67 - 7 23 55 - 6 47 27 - 7 36 0 - 6 35 31 0.76 102 0 0 - 7 30 2 17 18 18.4 15 100 -67 - 7 48 25 - 7 11 45 - 8 0 34 - 6 59 45 0.77 103 0 0 - 7 55 18 17 18 21.1 16 100 -66 - 8 13 46 - 7 36 55 - 8 25 59 - 7 24 51 0.77 104 0 0 - 8 21 26 17 18 24.1 17 100 -65 - 8 40 0 - 8 2 56 - 8 52 17 - 7 50 48 0.77 105 0 0 - 8 48 25 17 18 27.2 18 100 -65 - 9 7 6 - 8 29 49 - 9 19 28 - 8 17 37 0.77 106 0 0 - 9 16 17 17 18 30.5 19 100 -64 - 9 35 5 - 8 57 35 - 9 47 31 - 8 45 18 0.77 107 0 0 - 9 45 2 17 18 34.0 20 99 -63 -10 3 56 - 9 26 12 -10 16 27 - 9 13 51 0.77 108 0 0 -10 14 38 17 18 37.7 21 99 -62 -10 33 40 - 9 55 42 -10 46 16 - 9 43 16 0.77 109 0 0 -10 45 7 17 18 41.6 22 99 -61 -11 4 16 -10 26 3 -11 16 57 -10 13 33 0.77 110 0 0 -11 16 29 17 18 45.7 23 98 -60 -11 35 45 -10 57 17 -11 48 31 -10 44 42 0.78 111 0 0 -11 48 42 17 18 50.0 25 98 -59 -12 8 7 -11 29 23 -12 20 57 -11 16 43 0.78 112 0 0 -12 21 48 17 18 54.5 26 98 -58 -12 41 21 -12 2 21 -12 54 17 -11 49 36 0.78 113 0 0 -12 55 46 17 18 59.2 27 97 -57 -13 15 27 -12 36 11 -13 28 28 -12 23 20 0.78 114 0 0 -13 30 36 17 19 4.1 28 97 -56 -13 50 25 -13 10 52 -14 3 32 -12 57 56 0.78 115 0 0 -14 6 17 17 19 9.3 29 96 -55 -14 26 15 -13 46 25 -14 39 27 -13 33 24 0.78 116 0 0 -14 42 49 17 19 14.6 30 96 -54 -15 2 56 -14 22 49 -15 16 14 -14 9 42 0.78 117 0 0 -15 20 12 17 19 20.1 31 95 -53 -15 40 28 -15 0 3 -15 53 52 -14 46 50 0.78 118 0 0 -15 58 26 17 19 25.8 32 94 -52 -16 18 51 -15 38 8 -16 32 21 -15 24 49 0.78 119 0 0 -16 37 29 17 19 31.7 33 94 -51 -16 58 3 -16 17 2 -17 11 40 -16 3 37 0.78 120 0 0 -17 17 21 17 19 37.8 34 93 -50 -17 38 5 -16 56 45 -17 51 48 -16 43 14 0.78 121 0 0 -17 58 2 17 19 44.1 35 92 -49 -18 18 55 -17 37 16 -18 32 45 -17 23 39 0.78 122 0 0 -18 39 31 17 19 50.6 36 92 -48 -19 0 34 -18 18 35 -19 14 30 -18 4 52 0.78 123 0 0 -19 21 46 17 19 57.3 37 91 -46 -19 42 59 -19 0 41 -19 57 2 -18 46 51 0.78 124 0 0 -20 4 47 17 20 4.1 38 90 -45 -20 26 10 -19 43 32 -20 40 20 -19 29 36 0.78 125 0 0 -20 48 33 17 20 11.2 39 89 -44 -21 10 6 -20 27 7 -21 24 23 -20 13 5 0.78 126 0 0 -21 33 2 17 20 18.3 40 88 -43 -21 54 46 -21 11 27 -22 9 9 -20 57 17 0.78 127 0 0 -22 18 14 17 20 25.7 41 87 -42 -22 40 8 -21 56 28 -22 54 38 -21 42 12 0.78 128 0 0 -23 4 6 17 20 33.2 42 86 -41 -23 26 10 -22 42 10 -23 40 48 -22 27 47 0.78 129 0 0 -23 50 37 17 20 40.9 42 85 -39 -24 12 52 -23 28 31 -24 27 36 -23 14 1 0.78 130 0 0 -24 37 46 17 20 48.7 43 83 -38 -25 0 11 -24 15 29 -25 15 3 -24 0 53 0.78 131 0 0 -25 25 30 17 20 56.7 44 82 -37 -25 48 7 -25 3 3 -26 3 5 -24 48 21 0.78 132 0 0 -26 13 49 17 21 4.7 45 81 -36 -26 36 36 -25 51 11 -26 51 41 -25 36 22 0.78 133 0 0 -27 2 39 17 21 12.9 46 79 -34 -27 25 36 -26 39 51 -27 40 49 -26 24 55 0.78 134 0 0 -27 51 59 17 21 21.3 46 78 -33 -28 15 6 -27 29 0 -28 30 26 -27 13 58 0.78 135 0 0 -28 41 46 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7.6 8 255 33 -72 45 25 -72 9 25 -72 57 20 -71 57 38 0.81 - 80 59 59 -72 20 6 17 29 8.0 7 254 33 -72 38 13 -72 2 3 -72 50 12 -71 50 12 0.81 - 79 59 59 -72 12 31 17 29 8.4 7 253 33 -72 30 44 -71 54 22 -72 42 47 -71 42 28 0.81 - 78 59 59 -72 4 36 17 29 8.8 7 252 33 -72 22 55 -71 46 22 -72 35 2 -71 34 24 0.81 - 77 59 59 -71 56 23 17 29 9.2 6 251 33 -72 14 47 -71 38 3 -72 26 58 -71 26 0 0.82 - 76 59 59 -71 47 49 17 29 9.5 6 250 33 -72 6 20 -71 29 23 -72 18 35 -71 17 17 0.82 - 75 59 59 -71 38 55 17 29 9.8 6 249 33 -71 57 32 -71 20 22 -72 9 51 -71 8 12 0.82 - 74 59 59 -71 29 40 17 29 10.2 5 248 33 -71 48 24 -71 11 1 -72 0 47 -70 58 46 0.83 - 73 59 59 -71 20 3 17 29 10.5 5 247 33 -71 38 54 -71 1 18 -71 51 22 -70 48 59 0.83 - 72 59 59 -71 10 5 17 29 10.7 5 246 33 -71 29 3 -70 51 13 -71 41 36 -70 38 50 0.84 - 72 0 0 -70 59 45 17 29 11.0 4 245 33 -71 18 50 -70 40 45 -71 31 27 -70 28 17 0.85 - 71 0 0 -70 49 1 17 29 11.3 4 244 34 -71 8 13 -70 29 54 -71 20 56 -70 17 22 0.85 - 70 0 0 -70 37 54 17 29 11.5 3 243 34 -70 57 14 -70 18 40 -71 10 1 -70 6 2 0.86 - 69 0 0 -70 26 22 17 29 11.7 3 242 34 -70 45 50 -70 7 1 -70 58 42 -69 54 18 0.88 - 68 0 0 -70 14 26 17 29 11.9 3 241 34 -70 34 1 -69 54 56 -70 46 59 -69 42 9 0.89 - 67 0 0 -70 2 4 17 29 12.0 2 240 34 -70 21 48 -69 42 27 -70 34 51 -69 29 34 0.92 - 66 0 0 -69 49 16 17 29 12.2 2 239 34 -70 9 8 -69 29 31 -70 22 16 -69 16 33 0.95 - 65 0 0 -69 36 2 17 29 12.3 1 238 34 -69 56 2 -69 16 8 -70 9 16 -69 3 5 1.00 - 64 0 0 -69 22 19 17 29 12.4 1 238 34 -69 42 28 -69 2 17 -69 55 48 -68 49 9 1.10 - 63 0 0 -69 8 9 17 29 12.5 1 237 34 -69 28 26 -68 47 58 -69 41 52 -68 34 44 1.33 - 62 0 0 -68 53 29 17 29 12.5 0 236 34 -69 13 55 .. .. .. -69 27 27 .. .. .. 2.98 0 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. -69 12 33 .. .. .. .... Uncertainty in time = +/- 1 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: UCAC4 391-039606 * constellation : Puppis * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 08 00 57.2322 DE: -11 53 22.412 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 08 00 57.2324 DE: -11 53 22.413 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.300) * V mag [mag]: 12.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1263) Varsavia asteroid class: approx. diameter [km]: 49 approx. diameter ["]: 0.037 distance from Earth [AU]: 1.85290 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#65 date of fit: 2023 Oct 12 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", 0.000", 72.833° remarks: * orbital elements for (1263)Varsavia : Mean anomaly = 4.3572191430 deg Arg. of pericenter = 286.8698017338 deg Long. of node = 158.4468535181 deg Inclination = 29.2523112361 deg Eccentricity = 0.1871437331 Semimajor axis = 2.6663079985 AU Perihelion dist = 2.1673251662 AU Mag: H = 10.21, G = 0.15 Epoch of elements : MJD 60251.72472222 TDT (2023 Nov 03.7247) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#652023Oct12,3.27,2023,11,3,17.393592,-0.345676,-0.502358,6.977367,-4.796388,-0.005289,0.001550,0.000000,0.000001 176.9033,-11.9515,-85.01,-15.14,False UCAC4 391-039606,8.01589781,-11.8895589,0.00,12.23,0.00,0.0,0,,8.03459522,-11.9514639,2.35,0.00,0,0,0 1263,Varsavia,14.45,49.100,1.8529,0,0,2.257,-22.77,,3.0,0 0,4.1932,2023,11,3,286.8698,158.4469,29.2523,0.18714,2.66631,2.16733,10.21,5.0,0.15 1.329,0.0153,0.0005,73,0.0153,Known errors,-1.00,0,-1,-1 20231103_039606,60232.88 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 21:00 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org