IOTA/IOTA-ES occultation update for (444) Gyptis / TYC 0767-00198-1 event on 2012 Oct 26, 02:08 UT Visible from Europe, Arabia Summary ------- On 2012 Oct 26 UT, the 193 km diameter asteroid (444) Gyptis will occult a 11.6 mag star in the constellation Canis Minor for observers along a path across Europe, Arabia. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.5 mag to 12.8 mag (the magnitude of the asteroid) for at most 19.8 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: 99 * date and approx. time of event: 2012 Oct 26, 01:58 - 2012 Oct 26, 02:10 UT * geocentric midpoint of event [JD]: 2456226.58942083 * magnitude of target star: 11.6 * magnitude drop [mag]: 1.5 * estimated maximum duration [s]: 19.8 * Moon: 87 % sunlit, 120° distance * Sun: 103° distance * rough path description: Europe, Arabia The occultation path -------------------- * approximate projected width [km]: 198 * 1 sigma uncertainty interval [path widths]: +/- 0.28 * 1 sigma uncertainty interval [seconds]: +/- 5.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .033 +/- .030) * 1 sigma uncertainty ellipse (major, minor, PA): ( .033", .030", 91° ) * approx speed of asteroid's shadow [km/s]: 9.7598 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0767-00198-1 by 444 Gyptis on 2012 Oct 26 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 ' " Longitude Longitude Longitude Longitude Latitude Latitude Latitude Latitude 56 0 0 15 11 6 2 10 2 76 253 -1 13 54 34 16 28 8 13 11 55 17 11 31 55 0 0 16 10 40 2 9 46 76 248 -2 14 54 7 17 27 43 14 11 28 18 11 6 54 0 0 17 9 57 2 9 30 77 242 -3 15 53 26 18 26 59 15 10 47 19 10 21 53 0 0 18 8 55 2 9 14 77 235 -4 16 52 26 19 25 54 16 9 48 20 9 14 52 0 0 19 7 29 2 8 58 77 229 -6 17 51 4 20 24 23 17 8 29 21 7 40 51 0 0 20 5 35 2 8 42 78 222 -7 18 49 17 21 22 23 18 6 45 22 5 37 50 0 0 21 3 11 2 8 26 77 215 -8 19 47 1 22 19 51 19 4 33 23 3 0 49 0 0 22 0 14 2 8 10 77 209 -9 20 44 13 23 16 43 20 1 50 23 59 47 48 0 0 22 56 40 2 7 55 77 203 -10 21 40 50 24 12 58 20 58 33 24 55 55 47 0 0 23 52 27 2 7 40 76 197 -11 22 36 49 25 8 31 21 54 39 25 51 21 46 0 0 24 47 31 2 7 25 76 192 -12 23 32 8 26 3 22 22 50 6 26 46 3 45 0 0 25 41 51 2 7 10 75 188 -14 24 26 43 26 57 26 23 44 50 27 39 58 44 0 0 26 35 25 2 6 55 74 183 -15 25 20 34 27 50 42 24 38 49 28 33 4 43 0 0 27 28 9 2 6 41 73 180 -16 26 13 36 28 43 8 25 32 2 29 25 20 42 0 0 28 20 4 2 6 26 72 176 -17 27 5 50 29 34 43 26 24 26 30 16 43 41 0 0 29 11 6 2 6 13 71 173 -18 27 57 12 30 25 24 27 15 59 31 7 13 40 0 0 30 1 14 2 5 59 70 170 -19 28 47 42 31 15 11 28 6 41 31 56 47 39 0 0 30 50 27 2 5 45 69 168 -20 29 37 17 32 4 1 28 56 28 32 45 25 38 0 0 31 38 45 2 5 32 68 165 -21 30 25 58 32 51 55 29 45 22 33 33 5 37 0 0 32 26 5 2 5 19 67 163 -21 31 13 42 33 38 52 30 33 19 34 19 48 36 0 0 33 12 28 2 5 7 66 161 -22 32 0 29 34 24 50 31 20 20 35 5 32 35 0 0 33 57 53 2 4 54 65 159 -23 32 46 19 35 9 49 32 6 24 35 50 17 34 0 0 34 42 19 2 4 42 64 158 -24 33 31 11 35 53 50 32 51 30 36 34 2 33 0 0 35 25 47 2 4 31 63 156 -25 34 15 5 36 36 51 33 35 37 37 16 49 32 0 0 36 8 15 2 4 19 62 154 -26 34 57 59 37 18 53 34 18 47 37 58 35 31 0 0 36 49 45 2 4 8 61 153 -27 35 39 56 37 59 55 35 0 58 38 39 23 30 0 0 37 30 16 2 3 57 60 152 -27 36 20 53 38 39 59 35 42 10 39 19 11 29 0 0 38 9 48 2 3 46 59 150 -28 37 0 52 39 19 4 36 22 24 39 58 0 28 0 0 38 48 22 2 3 36 58 149 -29 37 39 53 39 57 10 37 1 40 40 35 51 27 0 0 39 25 58 2 3 26 57 148 -30 38 17 57 40 34 19 37 39 59 41 12 44 26 0 0 40 2 37 2 3 16 57 146 -30 38 55 2 41 10 30 38 17 20 41 48 40 25 0 0 40 38 19 2 3 6 56 145 -31 39 31 11 41 45 45 38 53 43 42 23 39 24 0 0 41 13 4 2 2 57 55 144 -32 40 6 24 42 20 3 39 29 11 42 57 42 23 0 0 41 46 54 2 2 48 54 143 -32 40 40 41 42 53 26 40 3 43 43 30 50 22 0 0 42 19 50 2 2 39 53 142 -33 41 14 3 43 25 54 40 37 19 44 3 3 21 0 0 42 51 51 2 2 30 52 141 -33 41 46 30 43 57 29 41 10 1 44 34 22 20 0 0 43 22 59 2 2 22 51 140 -34 42 18 4 44 28 10 41 41 50 45 4 49 19 0 0 43 53 14 2 2 14 50 139 -35 42 48 45 44 57 59 42 12 45 45 34 23 18 0 0 44 22 37 2 2 6 49 138 -35 43 18 34 45 26 57 42 42 48 46 3 7 17 0 0 44 51 10 2 1 58 49 137 -36 43 47 32 45 55 5 43 12 0 46 31 0 16 0 0 45 18 53 2 1 51 48 136 -36 44 15 40 46 22 23 43 40 22 46 58 3 15 0 0 45 45 47 2 1 43 47 135 -37 44 42 58 46 48 52 44 7 53 47 24 19 14 0 0 46 11 52 2 1 36 46 134 -37 45 9 27 47 14 33 44 34 36 47 49 46 13 0 0 46 37 11 2 1 29 45 133 -38 45 35 9 47 39 28 45 0 31 48 14 28 12 0 0 47 1 42 2 1 23 44 132 -38 46 0 4 48 3 36 45 25 38 48 38 23 11 0 0 47 25 28 2 1 16 44 131 -39 46 24 12 48 26 59 45 50 0 49 1 33 10 0 0 47 48 30 2 1 10 43 130 -39 46 47 36 48 49 38 46 13 35 49 24 0 9 0 0 48 10 47 2 1 4 42 129 -39 47 10 15 49 11 34 46 36 27 49 45 43 8 0 0 48 32 22 2 0 58 41 129 -40 47 32 10 49 32 47 46 58 34 50 6 44 7 0 0 48 53 14 2 0 52 41 128 -40 47 53 23 49 53 18 47 19 58 50 27 3 6 0 0 49 13 24 2 0 46 40 127 -41 48 13 54 50 13 9 47 40 40 50 46 42 5 0 0 49 32 55 2 0 41 39 126 -41 48 33 44 50 32 19 48 0 41 51 5 41 4 0 0 49 51 45 2 0 35 38 125 -41 48 52 53 50 50 50 48 20 1 51 24 1 3 0 0 50 9 56 2 0 30 38 124 -42 49 11 23 51 8 42 48 38 41 51 41 43 2 0 0 50 27 29 2 0 25 37 123 -42 49 29 14 51 25 57 48 56 42 51 58 48 1 0 0 50 44 24 2 0 20 36 122 -42 49 46 26 51 42 34 49 14 4 52 15 15 0 0 0 51 0 42 2 0 15 36 122 -43 50 3 1 51 58 35 49 30 49 52 31 6 - 1 0 0 51 16 24 2 0 11 35 121 -43 50 19 0 52 14 1 49 46 56 52 46 22 - 2 0 0 51 31 30 2 0 6 34 120 -43 50 34 22 52 28 51 50 2 27 53 1 3 - 3 0 0 51 46 1 2 0 2 34 119 -44 50 49 9 52 43 7 50 17 23 53 15 10 - 4 0 0 51 59 58 1 59 57 33 118 -44 51 3 21 52 56 49 50 31 43 53 28 44 - 5 0 0 52 13 22 1 59 53 32 117 -44 51 16 58 53 9 57 50 45 28 53 41 45 - 6 0 0 52 26 12 1 59 49 32 116 -44 51 30 2 53 22 33 50 58 40 53 54 13 - 7 0 0 52 38 29 1 59 45 31 116 -45 51 42 33 53 34 37 51 11 18 54 6 9 - 8 0 0 52 50 14 1 59 41 30 115 -45 51 54 31 53 46 10 51 23 23 54 17 35 - 9 0 0 53 1 28 1 59 38 30 114 -45 52 5 57 53 57 11 51 34 56 54 28 29 - 10 0 0 53 12 11 1 59 34 29 113 -45 52 16 51 54 7 42 51 45 56 54 38 53 - 11 0 0 53 22 23 1 59 30 28 112 -45 52 27 14 54 17 43 51 56 26 54 48 48 - 12 0 0 53 32 4 1 59 27 28 111 -46 52 37 6 54 27 14 52 6 24 54 58 13 - 13 0 0 53 41 16 1 59 24 27 110 -46 52 46 29 54 36 16 52 15 52 55 7 9 - 14 0 0 53 49 59 1 59 20 27 110 -46 52 55 21 54 44 49 52 24 49 55 15 36 - 15 0 0 53 58 13 1 59 17 26 109 -46 53 3 43 54 52 53 52 33 17 55 23 36 - 16 0 0 54 5 58 1 59 14 25 108 -46 53 11 37 55 0 30 52 41 16 55 31 7 - 17 0 0 54 13 15 1 59 11 25 107 -46 53 19 2 55 7 38 52 48 45 55 38 11 - 18 0 0 54 20 3 1 59 8 24 106 -46 53 25 58 55 14 20 52 55 45 55 44 48 - 19 0 0 54 26 25 1 59 5 24 105 -47 53 32 26 55 20 34 53 2 18 55 50 58 - 20 0 0 54 32 18 1 59 3 23 104 -47 53 38 27 55 26 21 53 8 22 55 56 42 - 21 0 0 54 37 45 1 59 0 22 104 -47 53 44 0 55 31 42 53 13 58 56 1 59 - 22 0 0 54 42 45 1 58 57 22 103 -47 53 49 5 55 36 36 53 19 6 56 6 50 - 23 0 0 54 47 18 1 58 55 21 102 -47 53 53 43 55 41 4 53 23 47 56 11 16 - 24 0 0 54 51 25 1 58 52 21 101 -47 53 57 55 55 45 6 53 28 1 56 15 15 - 25 0 0 54 55 6 1 58 50 20 100 -47 54 1 39 55 48 43 53 31 48 56 18 50 - 26 0 0 54 58 20 1 58 48 19 99 -47 54 4 57 55 51 54 53 35 8 56 21 59 - 27 0 0 55 1 9 1 58 45 19 99 -47 54 7 49 55 54 40 53 38 1 56 24 43 - 28 0 0 55 3 32 1 58 43 18 98 -47 54 10 14 55 57 0 53 40 28 56 27 2 - 29 0 0 55 5 29 1 58 41 18 97 -47 54 12 14 55 58 55 53 42 28 56 28 56 - 30 0 0 55 7 1 1 58 39 17 96 -47 54 13 47 56 0 26 53 44 3 56 30 25 - 31 0 0 55 8 7 1 58 37 17 95 -47 54 14 54 56 1 31 53 45 11 56 31 30 - 32 0 0 55 8 48 1 58 35 16 94 -47 54 15 36 56 2 11 53 45 52 56 32 10 - 33 0 0 55 9 4 1 58 33 15 94 -47 54 15 51 56 2 27 53 46 8 56 32 25 - 34 0 0 55 8 54 1 58 32 15 93 -47 54 15 41 56 2 17 53 45 58 56 32 16 - 35 0 0 55 8 19 1 58 30 14 92 -47 54 15 5 56 1 43 53 45 21 56 31 42 - 36 0 0 55 7 18 1 58 28 14 91 -47 54 14 3 56 0 44 53 44 19 56 30 44 - 37 0 0 55 5 53 1 58 27 13 90 -47 54 12 36 55 59 20 53 42 50 56 29 21 - 38 0 0 55 4 2 1 58 25 13 89 -47 54 10 43 55 57 32 53 40 55 56 27 34 - 39 0 0 55 1 45 1 58 24 12 89 -47 54 8 23 55 55 18 53 38 34 56 25 22 - 40 0 0 54 59 3 1 58 22 11 88 -47 54 5 38 55 52 39 53 35 47 56 22 45 - 41 0 0 54 55 56 1 58 21 11 87 -47 54 2 27 55 49 36 53 32 34 56 19 44 - 42 0 0 54 52 23 1 58 20 10 86 -47 53 58 49 55 46 7 53 28 54 56 16 17 - 43 0 0 54 48 24 1 58 19 10 85 -47 53 54 46 55 42 13 53 24 48 56 12 26 - 44 0 0 54 43 59 1 58 18 9 84 -47 53 50 15 55 37 53 53 20 15 56 8 9 - 45 0 0 54 39 8 1 58 17 8 84 -47 53 45 19 55 33 8 53 15 15 56 3 27 - 46 0 0 54 33 50 1 58 16 8 83 -47 53 39 55 55 27 57 53 9 48 55 58 20 - 47 0 0 54 28 7 1 58 15 7 82 -47 53 34 5 55 22 20 53 3 54 55 52 47 - 48 0 0 54 21 56 1 58 14 7 81 -47 53 27 48 55 16 17 52 57 33 55 46 47 - 49 0 0 54 15 19 1 58 13 6 80 -47 53 21 3 55 9 47 52 50 44 55 40 22 - 50 0 0 54 8 15 1 58 12 5 80 -46 53 13 51 55 2 51 52 43 27 55 33 31 - 51 0 0 54 0 43 1 58 12 5 79 -46 53 6 10 54 55 28 52 35 42 55 26 13 - 52 0 0 53 52 44 1 58 11 4 78 -46 52 58 2 54 47 38 52 27 29 55 18 27 - 53 0 0 53 44 17 1 58 11 4 77 -46 52 49 26 54 39 20 52 18 47 55 10 15 - 54 0 0 53 35 22 1 58 10 3 76 -46 52 40 20 54 30 35 52 9 36 55 1 36 - 55 0 0 53 25 58 1 58 10 2 76 -46 52 30 46 54 21 21 51 59 57 54 52 28 - 56 0 0 53 16 5 1 58 10 2 75 -46 52 20 43 54 11 40 51 49 47 54 42 53 - 57 0 0 53 5 43 1 58 9 1 74 -45 52 10 9 54 1 29 51 39 7 54 32 49 - 58 0 0 52 54 52 1 58 9 1 73 -45 51 59 6 53 50 50 51 27 58 54 22 16 Uncertainty in time = +/- 6 secs Prediction of 2012 Sep 3.0 Data for the target star ------------------------ * name: TYC 0767-00198-1 * constellation : Canis Minor * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 07 17 50.4457 DE: +10 36 12.450 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .030, .029 ) * V mag [mag]: 11.6 * B mag [mag]: 12.0 * Apparent position with proper motion RA(deg): 109.6421561407 DE(deg): 10.5787763721 * Equation of equinoxes (radians) : 0.000059468652705 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (444) Gyptis approx. diameter [km]: 193 approx. diameter ["]: .113 distance from Earth [AU]: 2.35000 * orbital information: orbit source: Preston date of fit: 2012 Jul 10 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1133 number of rejected observations: 133 time covered by the observations: 1900 Jul 25 - 2012 Jan 03 1 sigma uncertainty ellipse (major, minor, PA): 0.013, 0.008, 96° remarks: * orbital elements for (444) Gyptis : Mean anomaly = 77.53067492 deg Arg. of pericenter = 155.45919162 deg Long. of node = 195.77649759 deg Inclination = 10.27584465 deg Eccentricity = 0.17494060 Semimajor axis = 2.77190282 AU Perihelion dist = 2.28698447 AU Mag: H = 7.93, G = 0.22 Epoch of elements : MJD 56226.08900000 TDT (2012 Oct 26.089) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Oct 26 444 Gyptis 2h 8.8m UT 11.6 7 17 50.446 10 36 12.45TYC 0767-00198-1 12.1 12.8 193 19.8 2.350 1.046 -13.65 42.4077 10.607 143.81 -12.54 2.1461 0.14189 0.16074 4.12727 -3.64845 -0.00554 0.00103 2000 76.23025720121020.00000155.459192195.776498 10.2758450.17494060 2.7719028 2.2869845 7.8 5.00.22 RATE 2.1356840 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.033 0.030 91 1.28 0.031 0 0-3 0 056173.0020121026_0198-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Sep 03, 19:57 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org