IOTA/IOTA-ES occultation update for (3193) Elliot / TYC 2422-00099-1 event on 2012 Oct 25, 20:32 UT Visible from China, India Summary ------- On 2012 Oct 25 UT, the 25 km diameter asteroid (3193) Elliot will occult a 9.4 mag star in the constellation Auriga for observers along a path across China, India. In the case of an occultation, the combined light of the asteroid and the star will drop by 7.5 mag to 16.9 mag (the magnitude of the asteroid) for at most 3.6 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: 28 * date and approx. time of event: 2012 Oct 25, 20:17 - 2012 Oct 25, 20:39 UT * geocentric midpoint of event [JD]: 2456226.35596667 * magnitude of target star: 9.4 * magnitude drop [mag]: 7.5 * estimated maximum duration [s]: 3.6 * Moon: 85 % sunlit, 108° distance * Sun: 116° distance * rough path description: China, India Additional comments ------------------- 11" double star The occultation path -------------------- * approximate projected width [km]: 25 * 1 sigma uncertainty interval [path widths]: +/- 2.40 * 1 sigma uncertainty interval [seconds]: +/- 10.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .080 +/- .051) * 1 sigma uncertainty ellipse (major, minor, PA): ( .080", .051", 93° ) * approx speed of asteroid's shadow [km/s]: 6.9274 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2422-00099-1 by 3193 Elliot on 2012 Oct 25 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 41 0 0 -20 6 21 20 17 17 0 57 -56 -20 14 25 -19 58 16 .. .. .. -19 19 30 42 0 0 -19 29 33 20 17 17 1 57 -57 -19 37 40 -19 21 27 -20 16 34 -18 42 30 43 0 0 -18 52 3 20 17 18 3 57 -58 -19 0 11 -18 43 54 -19 39 16 -18 4 46 44 0 0 -18 13 49 20 17 19 4 56 -58 -18 22 0 -18 5 38 -19 1 16 -17 26 18 45 0 0 -17 34 52 20 17 20 5 56 -59 -17 43 5 -17 26 38 -18 22 32 -16 47 8 46 0 0 -16 55 13 20 17 22 6 56 -60 -17 3 28 -16 46 57 -17 43 6 -16 7 15 47 0 0 -16 14 51 20 17 24 7 55 -61 -16 23 9 -16 6 33 -17 2 58 -15 26 40 48 0 0 -15 33 48 20 17 27 8 55 -62 -15 42 8 -15 25 27 -16 22 8 -14 45 24 49 0 0 -14 52 3 20 17 30 10 55 -63 -15 0 26 -14 43 41 -15 40 36 -14 3 26 50 0 0 -14 9 38 20 17 33 11 55 -63 -14 18 3 -14 1 13 -14 58 24 -13 20 48 51 0 0 -13 26 33 20 17 37 12 54 -64 -13 35 0 -13 18 6 -14 15 32 -12 37 31 52 0 0 -12 42 50 20 17 41 13 54 -65 -12 51 19 -12 34 20 -13 32 1 -11 53 34 53 0 0 -11 58 28 20 17 46 14 54 -66 -12 6 59 -11 49 56 -12 47 51 -11 9 0 54 0 0 -11 13 29 20 17 51 16 54 -66 -11 22 2 -11 4 55 -12 3 4 -10 23 49 55 0 0 -10 27 54 20 17 57 17 54 -67 -10 36 29 -10 19 18 -11 17 41 - 9 38 2 56 0 0 - 9 41 44 20 18 3 18 53 -67 - 9 50 21 - 9 33 7 -10 31 42 - 8 51 41 57 0 0 - 8 55 1 20 18 10 20 53 -68 - 9 3 40 - 8 46 21 - 9 45 10 - 8 4 47 58 0 0 - 8 7 45 20 18 17 21 53 -68 - 8 16 26 - 7 59 4 - 8 58 5 - 7 17 21 59 0 0 - 7 20 0 20 18 24 22 53 -69 - 7 28 42 - 7 11 17 - 8 10 30 - 6 29 25 60 0 0 - 6 31 45 20 18 33 23 53 -69 - 6 40 29 - 6 23 0 - 7 22 24 - 5 41 1 61 0 0 - 5 43 3 20 18 41 25 53 -69 - 5 51 49 - 5 34 17 - 6 33 52 - 4 52 10 62 0 0 - 4 53 56 20 18 50 26 53 -70 - 5 2 43 - 4 45 8 - 5 44 53 - 4 2 54 63 0 0 - 4 4 25 20 19 0 27 53 -70 - 4 13 14 - 3 55 36 - 4 55 30 - 3 13 16 64 0 0 - 3 14 33 20 19 10 29 53 -70 - 3 23 23 - 3 5 43 - 4 5 45 - 2 23 16 65 0 0 - 2 24 22 20 19 20 30 52 -70 - 2 33 13 - 2 15 30 - 3 15 41 - 1 32 58 66 0 0 - 1 33 53 20 19 31 31 52 -70 - 1 42 46 - 1 25 1 - 2 25 18 - 0 42 24 67 0 0 - 0 43 10 20 19 43 33 52 -69 - 0 52 3 - 0 34 17 - 1 34 41 0 8 24 68 0 0 0 7 45 20 19 54 34 52 -69 - 0 1 9 0 16 39 - 0 43 50 0 59 24 69 0 0 0 58 51 20 20 7 35 53 -69 0 49 56 1 7 46 0 7 12 1 50 34 70 0 0 1 50 4 20 20 20 37 53 -68 1 41 9 1 58 59 0 58 22 2 41 50 71 0 0 2 41 22 20 20 33 38 53 -68 2 32 27 2 50 18 1 49 38 3 33 10 72 0 0 3 32 43 20 20 46 39 53 -67 3 23 47 3 41 38 2 40 57 4 24 32 73 0 0 4 24 3 20 21 0 41 53 -67 4 15 7 4 32 59 3 32 17 5 15 53 74 0 0 5 15 20 20 21 15 42 53 -66 5 6 24 5 24 16 4 23 34 6 7 10 75 0 0 6 6 32 20 21 30 43 53 -65 5 57 37 6 15 28 5 14 47 6 58 20 76 0 0 6 57 36 20 21 45 45 53 -64 6 48 41 7 6 31 6 5 53 7 49 22 77 0 0 7 48 29 20 22 0 46 53 -64 7 39 35 7 57 24 6 56 49 8 40 13 78 0 0 8 39 9 20 22 16 48 54 -63 8 30 15 8 48 3 7 47 33 9 30 49 79 0 0 9 29 33 20 22 32 49 54 -62 9 20 40 9 38 27 8 38 1 10 21 8 80 0 0 10 19 39 20 22 49 50 54 -61 10 10 47 10 28 32 9 28 13 11 11 9 81 0 0 11 9 24 20 23 5 52 54 -60 11 0 33 11 18 16 10 18 4 12 0 48 82 0 0 11 58 47 20 23 22 53 55 -59 11 49 56 12 7 37 11 7 33 12 50 3 83 0 0 12 47 43 20 23 39 54 55 -58 12 38 55 12 56 32 11 56 37 13 38 52 84 0 0 13 36 13 20 23 57 56 55 -57 13 27 25 13 45 0 12 45 15 14 27 13 85 0 0 14 24 12 20 24 14 57 56 -56 14 15 27 14 32 58 13 33 24 15 15 4 86 0 0 15 11 40 20 24 32 58 56 -55 15 2 56 15 20 25 14 21 1 16 2 22 87 0 0 15 58 35 20 24 50 59 56 -54 15 49 53 16 7 17 15 8 6 16 49 6 88 0 0 16 44 54 20 25 8 61 57 -53 16 36 14 16 53 35 15 54 36 17 35 14 89 0 0 17 30 37 20 25 26 62 57 -52 17 21 58 17 39 15 16 40 30 18 20 45 90 0 0 18 15 40 20 25 44 63 58 -51 18 7 4 18 24 17 17 25 46 19 5 36 91 0 0 19 0 4 20 26 2 64 58 -50 18 51 30 19 8 39 18 10 22 19 49 48 92 0 0 19 43 47 20 26 20 66 59 -49 19 35 15 19 52 19 18 54 18 20 33 17 93 0 0 20 26 47 20 26 38 67 59 -47 20 18 17 20 35 17 19 37 31 21 16 4 94 0 0 21 9 4 20 26 57 68 60 -46 21 0 36 21 17 31 20 20 2 21 58 7 95 0 0 21 50 36 20 27 15 69 61 -45 21 42 11 21 59 1 21 1 48 22 39 25 96 0 0 22 31 23 20 27 33 71 61 -44 22 23 0 22 39 45 21 42 49 23 19 57 97 0 0 23 11 24 20 27 51 72 62 -43 23 3 4 23 19 43 22 23 5 23 59 44 98 0 0 23 50 38 20 28 9 73 63 -42 23 42 20 23 58 55 23 2 33 24 38 43 99 0 0 24 29 4 20 28 27 74 64 -41 24 20 50 24 37 19 23 41 15 25 16 55 100 0 0 25 6 44 20 28 45 75 65 -40 24 58 31 25 14 56 24 19 9 25 54 19 101 0 0 25 43 35 20 29 3 76 66 -39 25 35 25 25 51 44 24 56 16 26 30 54 102 0 0 26 19 37 20 29 21 77 67 -38 26 11 31 26 27 44 25 32 34 27 6 42 103 0 0 26 54 52 20 29 39 78 68 -37 26 46 47 27 2 56 26 8 3 27 41 41 104 0 0 27 29 17 20 29 56 80 70 -36 27 21 16 27 37 19 26 42 44 28 15 51 105 0 0 28 2 54 20 30 14 81 72 -35 27 54 55 28 10 53 27 16 36 28 49 13 106 0 0 28 35 43 20 30 31 82 74 -34 28 27 46 28 43 39 27 49 40 29 21 46 107 0 0 29 7 43 20 30 48 83 76 -33 28 59 49 29 15 37 28 21 55 29 53 31 108 0 0 29 38 54 20 31 5 84 79 -32 29 31 3 29 46 46 28 53 22 30 24 28 109 0 0 30 9 18 20 31 22 84 84 -31 30 1 29 30 17 6 29 24 0 30 54 36 110 0 0 30 38 53 20 31 39 85 90 -30 30 31 7 30 46 39 29 53 50 31 23 57 111 0 0 31 7 41 20 31 56 86 99 -29 30 59 58 31 15 25 30 22 53 31 52 30 112 0 0 31 35 42 20 32 12 87 114 -28 31 28 1 31 43 23 30 51 7 32 20 16 113 0 0 32 2 55 20 32 28 87 138 -28 31 55 16 32 10 34 31 18 35 32 47 16 114 0 0 32 29 22 20 32 45 87 169 -27 32 21 46 32 36 58 31 45 16 33 13 29 115 0 0 32 55 3 20 33 1 87 193 -26 32 47 29 33 2 37 32 11 10 33 38 56 116 0 0 33 19 58 20 33 16 86 208 -25 33 12 26 33 27 29 32 36 19 34 3 37 117 0 0 33 44 7 20 33 32 85 217 -24 33 36 38 33 51 37 33 0 42 34 27 34 118 0 0 34 7 32 20 33 47 85 224 -23 34 0 5 34 14 59 33 24 19 34 50 46 119 0 0 34 30 13 20 34 3 84 228 -22 34 22 48 34 37 38 33 47 12 35 13 13 120 0 0 34 52 9 20 34 18 83 231 -21 34 44 46 34 59 32 34 9 21 35 34 58 121 0 0 35 13 22 20 34 33 82 234 -20 35 6 1 35 20 43 34 30 46 35 55 59 122 0 0 35 33 52 20 34 48 81 236 -20 35 26 33 35 41 11 34 51 28 36 16 17 123 0 0 35 53 40 20 35 2 80 238 -19 35 46 23 36 0 56 35 11 26 36 35 53 124 0 0 36 12 45 20 35 17 79 240 -18 36 5 30 36 20 0 35 30 43 36 54 48 125 0 0 36 31 9 20 35 31 79 241 -17 36 23 56 36 38 22 35 49 18 37 13 1 126 0 0 36 48 52 20 35 45 78 242 -16 36 41 41 36 56 3 36 7 11 37 30 33 127 0 0 37 5 54 20 35 59 77 244 -15 36 58 45 37 13 4 36 24 24 37 47 26 128 0 0 37 22 17 20 36 13 76 245 -15 37 15 9 37 29 25 36 40 56 38 3 38 129 0 0 37 37 59 20 36 27 75 246 -14 37 30 53 37 45 6 36 56 48 38 19 12 130 0 0 37 53 3 20 36 41 74 247 -13 37 45 58 38 0 7 37 12 0 38 34 6 131 0 0 38 7 27 20 36 54 73 248 -12 38 0 24 38 14 31 37 26 33 38 48 22 132 0 0 38 21 14 20 37 7 73 249 -11 38 14 12 38 28 16 37 40 28 39 2 0 133 0 0 38 34 22 20 37 20 72 250 -11 38 27 22 38 41 23 37 53 44 39 15 1 134 0 0 38 46 53 20 37 33 71 251 -10 38 39 54 38 53 52 38 6 23 39 27 24 135 0 0 38 58 47 20 37 46 70 252 -9 38 51 49 39 5 45 38 18 24 39 39 10 136 0 0 39 10 4 20 37 59 69 252 -8 39 3 7 39 17 1 38 29 48 39 50 21 137 0 0 39 20 45 20 38 11 68 253 -7 39 13 49 39 27 40 38 40 35 40 0 55 138 0 0 39 30 49 20 38 24 68 254 -7 39 23 55 39 37 44 38 50 46 40 10 53 139 0 0 39 40 18 20 38 36 67 255 -6 39 33 25 39 47 11 39 0 21 40 20 16 140 0 0 39 49 12 20 38 48 66 256 -5 39 42 19 39 56 4 39 9 20 40 29 4 141 0 0 39 57 30 20 39 0 65 257 -4 39 50 38 40 4 21 39 17 43 40 37 17 142 0 0 40 5 13 20 39 12 64 257 -4 39 58 23 40 12 4 39 25 31 40 44 56 143 0 0 40 12 22 20 39 24 63 258 -3 40 5 33 40 19 12 39 32 45 40 52 1 144 0 0 40 18 57 20 39 35 63 259 -2 40 12 8 40 25 46 39 39 24 40 58 31 145 0 0 40 24 58 20 39 47 62 260 -1 40 18 9 40 31 47 39 45 28 41 4 28 146 0 0 40 30 25 20 39 58 61 260 -1 40 23 37 40 37 13 39 50 58 41 9 52 Uncertainty in time = +/- 12 secs Prediction of 2012 Jul 10.0 Data for the target star ------------------------ * name: TYC 2422-00099-1 * constellation : Auriga * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 06 28 09.9574 DE: +30 25 12.153 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .019, .018 ) * V mag [mag]: 9.4 * B mag [mag]: 9.4 * Apparent position with proper motion RA(deg): 97.2544749629 DE(deg): 30.4089406091 * Equation of equinoxes (radians) : 0.000059595550695 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3193) Elliot approx. diameter [km]: 25 approx. diameter ["]: .024 distance from Earth [AU]: 1.41900 * orbital information: orbit source: Preston date of fit: 2012 Jul 10 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 829 number of rejected observations: 21 time covered by the observations: 1977 Nov 10 - 2011 Nov 26 1 sigma uncertainty ellipse (major, minor, PA): 0.078, 0.048, 93° remarks: * orbital elements for (3193) Elliot : Mean anomaly = 345.86339694 deg Arg. of pericenter = 76.32125869 deg Long. of node = 11.81323807 deg Inclination = 5.73031583 deg Eccentricity = 0.10625516 Semimajor axis = 2.29630310 AU Perihelion dist = 2.05230906 AU Mag: H = 13.06, G = 0.15 Epoch of elements : MJD 56225.85600000 TDT (2012 Oct 25.856) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Oct 25 3193 Elliot 20h 32.6m UT 9.4 6 28 9.957 30 25 12.15TYC 2422-00099-1 9.4 16.9 25 3.6 1.419 1.691 10.41 114.2636 30.417 -132.14 -12.46 20.5432 -0.01532 0.02904 3.53159 1.67811 -0.00482 -0.00007 2000 344.20472220121020.00000 76.321259 11.813238 5.7303160.10625516 2.2963031 2.052309013.4 5.00.15 RATE 2.8324370 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.080 0.051 93 3.40 0.058 0 0 4 3 056118.0020121025_0099-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Sep 03, 19:53 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org