IOTA/IOTA-ES occultation update for (192) Nausikaa / TYC 0850-00869-1 event on 2012 Dec 01, 03:51 UT Visible from Europe Summary ------- On 2012 Dec 01 UT, the 118 km diameter asteroid (192) Nausikaa will occult a 11.0 mag star in the constellation Leo for observers along a path across Europe. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.7 mag to 12.4 mag (the magnitude of the asteroid) for at most 7.9 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 69 * date and approx. time of event: 2012 Dec 01, 03:45 - 2012 Dec 01, 03:51 UT * geocentric midpoint of event [JD]: 2456262.66085 * magnitude of target star: 11.0 * magnitude drop [mag]: 1.7 * estimated maximum duration [s]: 7.9 * Moon: 94 % sunlit, 65° distance * Sun: 88° distance * rough path description: Europe The occultation path -------------------- * approximate projected width [km]: 134 * 1 sigma uncertainty interval [path widths]: +/- 0.85 * 1 sigma uncertainty interval [seconds]: +/- 5.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .043 +/- .059) * 1 sigma uncertainty ellipse (major, minor, PA): ( .059", .043", 0° ) * approx speed of asteroid's shadow [km/s]: 14.9405 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0850-00869-1 by 192 Nausikaa on 2012 Dec 1 Centre Star Star Sun Path Limits Error Limits E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude - 65 0 0 52 18 10 3 45 24 1 74 -59 51 40 31 52 56 3 .. .. .. 54 1 0 - 64 0 0 52 28 35 3 45 24 1 75 -59 51 51 1 53 6 23 .. .. .. 54 11 11 - 63 0 0 52 38 40 3 45 25 2 76 -59 52 1 11 53 16 22 .. .. .. 54 21 1 - 62 0 0 52 48 23 3 45 25 2 77 -59 52 11 0 53 26 1 51 7 55 54 30 31 - 61 0 0 52 57 47 3 45 25 3 77 -59 52 20 28 53 35 19 51 17 31 54 39 41 - 60 0 0 53 6 49 3 45 25 4 78 -59 52 29 35 53 44 17 51 26 46 54 48 31 - 59 0 0 53 15 32 3 45 26 4 79 -59 52 38 22 53 52 55 51 35 40 54 57 0 - 58 0 0 53 23 54 3 45 26 5 80 -58 52 46 48 54 1 12 51 44 14 55 5 10 - 57 0 0 53 31 56 3 45 27 6 81 -58 52 54 55 54 9 10 51 52 27 55 13 0 - 56 0 0 53 39 38 3 45 27 6 81 -58 53 2 41 54 16 48 52 0 20 55 20 30 - 55 0 0 53 46 59 3 45 28 7 82 -58 53 10 7 54 24 5 52 7 53 55 27 41 - 54 0 0 53 54 2 3 45 28 7 83 -58 53 17 13 54 31 4 52 15 5 55 34 32 - 53 0 0 54 0 44 3 45 29 8 84 -57 53 23 59 54 37 42 52 21 58 55 41 4 - 52 0 0 54 7 7 3 45 30 9 85 -57 53 30 25 54 44 1 52 28 30 55 47 17 - 51 0 0 54 13 10 3 45 31 9 86 -57 53 36 32 54 50 1 52 34 42 55 53 11 - 50 0 0 54 18 54 3 45 31 10 86 -57 53 42 19 54 55 42 52 40 35 55 58 45 - 49 0 0 54 24 19 3 45 32 10 87 -57 53 47 47 55 1 3 52 46 8 56 4 1 - 48 0 0 54 29 24 3 45 33 11 88 -56 53 52 55 55 6 5 52 51 21 56 8 58 - 47 0 0 54 34 10 3 45 34 12 89 -56 53 57 44 55 10 49 52 56 14 56 13 37 - 46 0 0 54 38 37 3 45 35 12 90 -56 54 2 13 55 15 13 53 0 48 56 17 56 - 45 0 0 54 42 45 3 45 36 13 90 -55 54 6 24 55 19 19 53 5 3 56 21 58 - 44 0 0 54 46 34 3 45 37 13 91 -55 54 10 15 55 23 5 53 8 58 56 25 40 - 43 0 0 54 50 4 3 45 39 14 92 -55 54 13 47 55 26 33 53 12 34 56 29 4 - 42 0 0 54 53 15 3 45 40 14 93 -55 54 17 0 55 29 42 53 15 50 56 32 10 - 41 0 0 54 56 8 3 45 41 15 94 -54 54 19 55 55 32 33 53 18 48 56 34 58 - 40 0 0 54 58 41 3 45 42 16 95 -54 54 22 30 55 35 5 53 21 26 56 37 27 - 39 0 0 55 0 56 3 45 44 16 96 -54 54 24 46 55 37 19 53 23 44 56 39 38 - 38 0 0 55 2 53 3 45 45 17 96 -53 54 26 44 55 39 14 53 25 44 56 41 31 - 37 0 0 55 4 30 3 45 46 17 97 -53 54 28 23 55 40 50 53 27 25 56 43 5 - 36 0 0 55 5 49 3 45 48 18 98 -52 54 29 43 55 42 8 53 28 46 56 44 22 - 35 0 0 55 6 50 3 45 49 18 99 -52 54 30 44 55 43 8 53 29 48 56 45 20 - 34 0 0 55 7 32 3 45 51 19 100 -52 54 31 26 55 43 49 53 30 32 56 46 1 - 33 0 0 55 7 55 3 45 53 20 101 -51 54 31 50 55 44 12 53 30 56 56 46 23 - 32 0 0 55 7 59 3 45 54 20 102 -51 54 31 54 55 44 16 53 31 1 56 46 27 - 31 0 0 55 7 45 3 45 56 21 102 -51 54 31 40 55 44 2 53 30 47 56 46 13 - 30 0 0 55 7 13 3 45 58 21 103 -50 54 31 7 55 43 30 53 30 14 56 45 40 - 29 0 0 55 6 21 3 46 0 22 104 -50 54 30 16 55 42 39 53 29 21 56 44 50 - 28 0 0 55 5 11 3 46 1 22 105 -49 54 29 5 55 41 29 53 28 10 56 43 41 - 27 0 0 55 3 42 3 46 3 23 106 -49 54 27 36 55 40 1 53 26 39 56 42 14 - 26 0 0 55 1 55 3 46 5 23 107 -49 54 25 47 55 38 14 53 24 49 56 40 29 - 25 0 0 54 59 48 3 46 7 24 108 -48 54 23 40 55 36 9 53 22 40 56 38 26 - 24 0 0 54 57 23 3 46 9 25 109 -48 54 21 13 55 33 45 53 20 12 56 36 4 - 23 0 0 54 54 39 3 46 11 25 109 -47 54 18 28 55 31 3 53 17 24 56 33 24 - 22 0 0 54 51 36 3 46 13 26 110 -47 54 15 23 55 28 1 53 14 17 56 30 25 - 21 0 0 54 48 14 3 46 16 26 111 -46 54 11 59 55 24 41 53 10 50 56 27 8 - 20 0 0 54 44 33 3 46 18 27 112 -46 54 8 16 55 21 1 53 7 3 56 23 32 - 19 0 0 54 40 32 3 46 20 27 113 -45 54 4 13 55 17 3 53 2 57 56 19 38 - 18 0 0 54 36 12 3 46 22 28 114 -45 53 59 51 55 12 46 52 58 31 56 15 24 - 17 0 0 54 31 33 3 46 25 29 115 -44 53 55 10 55 8 9 52 53 45 56 10 52 - 16 0 0 54 26 34 3 46 27 29 116 -44 53 50 8 55 3 13 52 48 40 56 6 1 - 15 0 0 54 21 16 3 46 30 30 117 -44 53 44 47 54 57 58 52 43 14 56 0 50 - 14 0 0 54 15 38 3 46 32 30 118 -43 53 39 6 54 52 23 52 37 28 55 55 21 - 13 0 0 54 9 40 3 46 35 31 119 -43 53 33 6 54 46 28 52 31 22 55 49 32 - 12 0 0 54 3 23 3 46 38 31 119 -42 53 26 45 54 40 14 52 24 55 55 43 23 - 11 0 0 53 56 45 3 46 40 32 120 -42 53 20 3 54 33 40 52 18 8 55 36 55 - 10 0 0 53 49 47 3 46 43 33 121 -41 53 13 2 54 26 45 52 11 1 55 30 7 - 9 0 0 53 42 29 3 46 46 33 122 -40 53 5 40 54 19 31 52 3 32 55 23 0 - 8 0 0 53 34 50 3 46 49 34 123 -40 52 57 57 54 11 56 51 55 43 55 15 32 - 7 0 0 53 26 51 3 46 52 34 124 -39 52 49 53 54 4 1 51 47 33 55 7 44 - 6 0 0 53 18 31 3 46 55 35 125 -39 52 41 29 53 55 45 51 39 1 54 59 36 - 5 0 0 53 9 50 3 46 58 35 126 -38 52 32 44 53 47 9 51 30 8 54 51 8 - 4 0 0 53 0 48 3 47 1 36 127 -38 52 23 37 53 38 12 51 20 54 54 42 18 - 3 0 0 52 51 24 3 47 4 37 128 -37 52 14 9 53 28 53 51 11 18 54 33 8 - 2 0 0 52 41 40 3 47 7 37 129 -37 52 4 19 53 19 13 51 1 21 54 23 37 - 1 0 0 52 31 33 3 47 10 38 130 -36 51 54 8 53 9 12 50 51 1 54 13 45 0 0 0 52 21 6 3 47 14 38 131 -36 51 43 35 52 58 50 50 40 19 54 3 31 1 0 0 52 10 16 3 47 17 39 132 -35 51 32 40 52 48 5 50 29 15 53 52 56 2 0 0 51 59 4 3 47 21 40 133 -34 51 21 23 52 36 59 50 17 49 53 42 0 3 0 0 51 47 30 3 47 24 40 134 -34 51 9 43 52 25 30 50 6 0 53 30 41 4 0 0 51 35 33 3 47 28 41 135 -33 50 57 41 52 13 40 49 53 49 53 19 0 5 0 0 51 23 14 3 47 32 41 136 -33 50 45 16 52 1 27 49 41 14 53 6 57 6 0 0 51 10 33 3 47 35 42 137 -32 50 32 29 51 48 51 49 28 17 52 54 32 7 0 0 50 57 28 3 47 39 42 139 -31 50 19 18 51 35 52 49 14 56 52 41 44 8 0 0 50 44 0 3 47 43 43 140 -31 50 5 44 51 22 31 49 1 12 52 28 33 9 0 0 50 30 9 3 47 47 44 141 -30 49 51 47 51 8 46 48 47 5 52 15 0 10 0 0 50 15 55 3 47 51 44 142 -29 49 37 26 50 54 38 48 32 34 52 1 3 11 0 0 50 1 17 3 47 55 45 143 -29 49 22 42 50 40 6 48 17 39 51 46 43 12 0 0 49 46 15 3 48 0 45 144 -28 49 7 34 50 25 11 48 2 20 51 31 59 13 0 0 49 30 49 3 48 4 46 145 -27 48 52 2 50 9 52 47 46 37 51 16 52 14 0 0 49 15 0 3 48 8 47 147 -27 48 36 5 49 54 9 47 30 30 51 1 20 15 0 0 48 58 46 3 48 13 47 148 -26 48 19 45 49 38 2 47 13 59 50 45 25 16 0 0 48 42 8 3 48 17 48 149 -25 48 3 0 49 21 31 46 57 3 50 29 6 17 0 0 48 25 6 3 48 22 48 150 -25 47 45 51 49 4 36 46 39 43 50 12 22 18 0 0 48 7 39 3 48 26 49 152 -24 47 28 17 48 47 16 46 21 58 49 55 14 19 0 0 47 49 47 3 48 31 49 153 -23 47 10 19 48 29 31 46 3 48 49 37 41 20 0 0 47 31 31 3 48 36 50 154 -23 46 51 56 48 11 21 45 45 14 49 19 44 21 0 0 47 12 50 3 48 41 51 156 -22 46 33 8 47 52 47 45 26 14 49 1 22 22 0 0 46 53 44 3 48 46 51 157 -21 46 13 55 47 33 48 45 6 50 48 42 35 23 0 0 46 34 13 3 48 51 52 158 -20 45 54 18 47 14 24 44 47 1 48 23 23 24 0 0 46 14 17 3 48 56 52 160 -20 45 34 15 46 54 35 44 26 47 48 3 46 25 0 0 45 53 56 3 49 2 53 161 -19 45 13 47 46 34 21 44 6 9 47 43 44 26 0 0 45 33 10 3 49 7 53 163 -18 44 52 55 46 13 42 43 45 5 47 23 17 27 0 0 45 12 0 3 49 13 54 164 -17 44 31 37 45 52 38 43 23 37 47 2 25 28 0 0 44 50 24 3 49 18 55 166 -16 44 9 55 45 31 9 43 1 44 46 41 8 29 0 0 44 28 23 3 49 24 55 167 -16 43 47 48 45 9 15 42 39 26 46 19 25 30 0 0 44 5 58 3 49 30 56 169 -15 43 25 16 44 46 57 42 16 43 45 57 18 31 0 0 43 43 8 3 49 35 56 171 -14 43 2 20 44 24 13 41 53 36 45 34 46 32 0 0 43 19 53 3 49 41 57 173 -13 42 38 59 44 1 5 41 30 5 45 11 49 33 0 0 42 56 14 3 49 47 57 174 -12 42 15 14 43 37 32 41 6 10 44 48 27 34 0 0 42 32 11 3 49 53 57 176 -12 41 51 5 43 13 35 40 41 51 44 24 41 35 0 0 42 7 44 3 50 0 58 178 -11 41 26 32 42 49 14 40 17 9 44 0 30 36 0 0 41 42 53 3 50 6 58 180 -10 41 1 36 42 24 29 39 52 3 43 35 55 37 0 0 41 17 39 3 50 12 59 182 -9 40 36 16 41 59 20 39 26 33 43 10 56 38 0 0 40 52 2 3 50 19 59 184 -8 40 10 33 41 33 48 39 0 42 42 45 34 39 0 0 40 26 1 3 50 25 60 186 -7 39 44 27 41 7 53 38 34 28 42 19 48 40 0 0 39 59 38 3 50 32 60 188 -6 39 17 59 40 41 36 38 7 52 41 53 39 41 0 0 39 32 53 3 50 38 60 190 -5 38 51 10 40 14 55 37 40 54 41 27 8 42 0 0 39 5 47 3 50 45 60 192 -4 38 23 59 39 47 54 37 13 35 41 0 14 43 0 0 38 38 19 3 50 52 61 195 -4 37 56 27 39 20 30 36 45 56 40 32 59 44 0 0 38 10 31 3 50 59 61 197 -3 37 28 34 38 52 46 36 17 57 40 5 22 45 0 0 37 42 22 3 51 6 61 199 -2 37 0 22 38 24 42 35 49 38 39 37 24 46 0 0 37 13 54 3 51 13 61 202 -1 36 31 50 37 56 17 35 21 0 39 9 6 Uncertainty in time = +/- 7 secs Prediction of 2012 Oct 8.0 Data for the target star ------------------------ * name: TYC 0850-00869-1 * constellation : Leo * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 10 55 12.3203 DE: +10 06 14.452 * position source: mpos:UCAC4 pm:UCAC4 * standard error: RA,DE ["]: ( .043, .058 ) * V mag [mag]: 11.0 * B mag [mag]: 11.8 * Apparent position with proper motion RA(deg): 163.9733289770 DE(deg): 10.0328514061 * Equation of equinoxes (radians) : 0.000059579746972 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (192) Nausikaa approx. diameter [km]: 118 approx. diameter ["]: .066 distance from Earth [AU]: 2.47900 * orbital information: orbit source: Preston date of fit: 2012 Jul 10 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1414 number of rejected observations: 158 time covered by the observations: 1907 Nov 05 - 2012 Feb 02 1 sigma uncertainty ellipse (major, minor, PA): 0.008, 0.007, 123° remarks: * orbital elements for (192) Nausikaa : Mean anomaly = 100.18071346 deg Arg. of pericenter = 30.11605229 deg Long. of node = 343.26365915 deg Inclination = 6.81506478 deg Eccentricity = 0.24654288 Semimajor axis = 2.40203188 AU Perihelion dist = 1.80982802 AU Mag: H = 7.10, G = 0.03 Epoch of elements : MJD 56262.16100000 TDT (2012 Dec 01.161) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Dec 1 192 Nausikaa 3h 51.6m UT 11.0 10 55 12.320 10 6 14.45TYC 0850-00869-1 11.8 12.4 118 7.9 2.479 1.838 -12.55 35.4813 10.108 119.36 -21.85 3.8604 0.19441 0.43153 7.65494 -3.53758 -0.00539 0.00225 2000 99.60858820121129.00000 30.116052343.263659 6.8150650.24654288 2.4020319 1.8098280 7.1 5.00.03 RATE 2.6475000 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.059 0.043 0 1.85 0.056 0 0 3 2 056208.0020121201_0869-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Oct 08, 16:51 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org