IOTA/IOTA-ES occultation update for (1762) Russell / TYC 1288-00498-1 event on 2012 Nov 03, 09:46 UT Visible from USA Summary ------- On 2012 Nov 03 UT, the 17 km diameter asteroid (1762) Russell will occult a 9.8 mag star in the constellation Taurus for observers along a path across USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 6.1 mag to 15.9 mag (the magnitude of the asteroid) for at most 2.4 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: 26 * date and approx. time of event: 2012 Nov 03, 09:34 - 2012 Nov 03, 10:01 UT * geocentric midpoint of event [JD]: 2456234.90756667 * magnitude of target star: 9.8 * magnitude drop [mag]: 6.1 * estimated maximum duration [s]: 2.4 * Moon: 82 % sunlit, 16° distance * Sun: 146° distance * rough path description: USA The occultation path -------------------- * approximate projected width [km]: 18 * 1 sigma uncertainty interval [path widths]: +/- 2.59 * 1 sigma uncertainty interval [seconds]: +/- 8.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .051 +/- .034) * 1 sigma uncertainty ellipse (major, minor, PA): ( .051", .033", 84° ) * approx speed of asteroid's shadow [km/s]: 6.9822 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1288-00498-1 by 1762 Russell on 2012 Nov 3 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 150 0 0 4 18 13 10 1 24 1 71 -34 4 23 19 4 13 8 4 49 44 .. .. .. 151 0 0 4 39 39 10 1 23 2 71 -35 4 44 45 4 34 33 5 11 12 .. .. .. 152 0 0 5 1 19 10 1 22 3 71 -36 5 6 25 4 56 13 5 32 55 4 29 48 153 0 0 5 23 14 10 1 21 4 71 -37 5 28 21 5 18 8 5 54 53 4 51 41 154 0 0 5 45 24 10 1 20 5 71 -39 5 50 31 5 40 17 6 17 4 5 13 48 155 0 0 6 7 47 10 1 18 6 71 -40 6 12 54 6 2 39 6 39 30 5 36 9 156 0 0 6 30 23 10 1 16 7 71 -41 6 35 31 6 25 15 7 2 9 5 58 43 157 0 0 6 53 12 10 1 14 8 71 -42 6 58 20 6 48 4 7 25 0 6 21 29 158 0 0 7 16 13 10 1 11 9 72 -43 7 21 22 7 11 4 7 48 3 6 44 28 159 0 0 7 39 26 10 1 8 10 72 -44 7 44 35 7 34 17 8 11 18 7 7 39 160 0 0 8 2 49 10 1 5 11 72 -45 8 7 59 7 57 40 8 34 44 7 31 0 161 0 0 8 26 23 10 1 1 12 72 -46 8 31 33 8 21 14 8 58 20 7 54 32 162 0 0 8 50 7 10 0 58 13 72 -47 8 55 17 8 44 57 9 22 6 8 18 14 163 0 0 9 14 0 10 0 53 14 72 -48 9 19 11 9 8 50 9 46 1 8 42 5 164 0 0 9 38 2 10 0 49 15 73 -49 9 43 13 9 32 51 10 10 4 9 6 5 165 0 0 10 2 12 10 0 44 17 73 -50 10 7 23 9 57 1 10 34 16 9 30 13 166 0 0 10 26 29 10 0 39 18 73 -51 10 31 41 10 21 18 10 58 35 9 54 29 167 0 0 10 50 54 10 0 33 19 73 -52 10 56 5 10 45 42 11 23 1 10 18 52 168 0 0 11 15 25 10 0 28 20 73 -53 11 20 36 11 10 13 11 47 34 10 43 21 169 0 0 11 40 1 10 0 22 21 74 -54 11 45 13 11 34 49 12 12 12 11 7 56 170 0 0 12 4 43 10 0 16 22 74 -55 12 9 55 11 59 31 12 36 55 11 32 36 171 0 0 12 29 29 10 0 9 23 74 -56 12 34 42 12 24 17 13 1 43 11 57 21 172 0 0 12 54 19 10 0 2 24 74 -57 12 59 32 12 49 7 13 26 34 12 22 10 173 0 0 13 19 13 9 59 55 25 75 -58 13 24 26 13 14 0 13 51 29 12 47 3 174 0 0 13 44 9 9 59 48 26 75 -59 13 49 22 13 38 56 14 16 26 13 11 58 175 0 0 14 9 8 9 59 40 27 75 -60 14 14 21 14 3 55 14 41 26 13 36 56 176 0 0 14 34 8 9 59 32 28 76 -61 14 39 22 14 28 55 15 6 27 14 1 55 177 0 0 14 59 10 9 59 24 29 76 -62 15 4 23 14 53 56 15 31 29 14 26 56 178 0 0 15 24 11 9 59 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37 20 58 -111 0 0 38 1 18 9 44 55 71 192 -49 38 6 14 37 56 23 38 31 46 37 30 56 -110 0 0 38 10 55 9 44 43 71 195 -48 38 15 50 38 6 1 38 41 21 37 40 35 -109 0 0 38 20 15 9 44 31 70 197 -47 38 25 9 38 15 20 38 50 38 37 49 56 -108 0 0 38 29 16 9 44 19 70 200 -46 38 34 10 38 24 22 38 59 37 37 58 59 -107 0 0 38 37 59 9 44 7 69 202 -46 38 42 53 38 33 5 39 8 18 38 7 44 -106 0 0 38 46 24 9 43 55 69 204 -45 38 51 17 38 41 30 39 16 41 38 16 11 -105 0 0 38 54 30 9 43 43 69 207 -44 38 59 24 38 49 37 39 24 46 38 24 20 -104 0 0 39 2 19 9 43 32 68 209 -43 39 7 12 38 57 26 39 32 33 38 32 10 -103 0 0 39 9 50 9 43 20 68 211 -43 39 14 43 39 4 57 39 40 2 38 39 43 -102 0 0 39 17 2 9 43 8 67 213 -42 39 21 55 39 12 10 39 47 13 38 46 57 -101 0 0 39 23 57 9 42 57 67 215 -41 39 28 49 39 19 5 39 54 5 38 53 53 -100 0 0 39 30 33 9 42 46 66 216 -40 39 35 25 39 25 41 40 0 40 39 0 31 - 99 0 0 39 36 52 9 42 34 66 218 -40 39 41 43 39 32 0 40 6 57 39 6 51 - 98 0 0 39 42 52 9 42 23 65 220 -39 39 47 43 39 38 0 40 12 56 39 12 53 - 97 0 0 39 48 34 9 42 12 64 222 -38 39 53 25 39 43 43 40 18 37 39 18 36 - 96 0 0 39 53 58 9 42 1 64 223 -37 39 58 49 39 49 7 40 24 0 39 24 2 - 95 0 0 39 59 4 9 41 50 63 225 -37 40 3 55 39 54 14 40 29 4 39 29 9 - 94 0 0 40 3 53 9 41 39 63 226 -36 40 8 43 39 59 2 40 33 51 39 33 59 - 93 0 0 40 8 23 9 41 28 62 228 -35 40 13 13 40 3 32 40 38 20 39 38 30 - 92 0 0 40 12 35 9 41 17 62 229 -34 40 17 25 40 7 45 40 42 31 39 42 43 - 91 0 0 40 16 29 9 41 6 61 231 -34 40 21 19 40 11 39 40 46 24 39 46 38 - 90 0 0 40 20 5 9 40 55 60 232 -33 40 24 55 40 15 15 40 49 59 39 50 15 - 89 0 0 40 23 23 9 40 45 60 233 -32 40 28 13 40 18 33 40 53 16 39 53 34 - 88 0 0 40 26 23 9 40 34 59 235 -32 40 31 13 40 21 33 40 56 16 39 56 35 - 87 0 0 40 29 5 9 40 24 59 236 -31 40 33 54 40 24 15 40 58 57 39 59 18 - 86 0 0 40 31 29 9 40 13 58 237 -30 40 36 18 40 26 39 41 1 20 40 1 42 - 85 0 0 40 33 35 9 40 3 57 238 -29 40 38 24 40 28 45 41 3 25 40 3 49 - 84 0 0 40 35 22 9 39 53 57 239 -29 40 40 12 40 30 33 41 5 13 40 5 37 - 83 0 0 40 36 52 9 39 43 56 241 -28 40 41 42 40 32 3 41 6 42 40 7 7 - 82 0 0 40 38 4 9 39 33 55 242 -27 40 42 53 40 33 15 41 7 53 40 8 20 - 81 0 0 40 38 58 9 39 23 55 243 -26 40 43 47 40 34 9 41 8 46 40 9 14 - 80 0 0 40 39 33 9 39 13 54 244 -26 40 44 22 40 34 44 41 9 22 40 9 49 - 79 0 0 40 39 51 9 39 3 53 245 -25 40 44 40 40 35 2 41 9 39 40 10 7 - 78 0 0 40 39 50 9 38 53 53 246 -24 40 44 39 40 35 1 41 9 38 40 10 6 - 77 0 0 40 39 31 9 38 44 52 247 -24 40 44 20 40 34 42 41 9 19 40 9 48 - 76 0 0 40 38 54 9 38 34 51 248 -23 40 43 43 40 34 5 41 8 43 40 9 11 - 75 0 0 40 37 59 9 38 24 51 249 -22 40 42 48 40 33 10 41 7 48 40 8 15 - 74 0 0 40 36 46 9 38 15 50 250 -21 40 41 35 40 31 57 41 6 34 40 7 2 - 73 0 0 40 35 14 9 38 6 49 251 -21 40 40 3 40 30 25 41 5 3 40 5 30 - 72 0 0 40 33 24 9 37 56 49 252 -20 40 38 13 40 28 35 41 3 14 40 3 40 - 71 0 0 40 31 16 9 37 47 48 253 -19 40 36 5 40 26 27 41 1 6 40 1 31 - 70 0 0 40 28 50 9 37 38 47 253 -18 40 33 39 40 24 0 40 58 40 39 59 4 - 69 0 0 40 26 5 9 37 29 47 254 -18 40 30 54 40 21 15 40 55 56 39 56 19 - 68 0 0 40 23 1 9 37 20 46 255 -17 40 27 51 40 18 12 40 52 53 39 53 15 - 67 0 0 40 19 40 9 37 11 45 256 -16 40 24 29 40 14 50 40 49 32 39 49 52 - 66 0 0 40 16 0 9 37 3 45 257 -15 40 20 49 40 11 10 40 45 53 39 46 11 - 65 0 0 40 12 1 9 36 54 44 258 -15 40 16 51 40 7 11 40 41 55 39 42 12 - 64 0 0 40 7 44 9 36 46 43 259 -14 40 12 34 40 2 54 40 37 39 39 37 53 - 63 0 0 40 3 8 9 36 37 42 259 -13 40 7 58 39 58 18 40 33 4 39 33 17 - 62 0 0 39 58 13 9 36 29 42 260 -13 40 3 4 39 53 23 40 28 11 39 28 21 - 61 0 0 39 53 0 9 36 20 41 261 -12 39 57 51 39 48 10 40 22 59 39 23 7 - 60 0 0 39 47 28 9 36 12 40 262 -11 39 52 19 39 42 38 40 17 28 39 17 33 - 59 0 0 39 41 38 9 36 4 40 263 -10 39 46 29 39 36 47 40 11 39 39 11 41 - 58 0 0 39 35 28 9 35 56 39 263 -10 39 40 19 39 30 37 40 5 30 39 5 31 - 57 0 0 39 29 0 9 35 48 38 264 -9 39 33 51 39 24 8 39 59 3 38 59 1 - 56 0 0 39 22 12 9 35 41 37 265 -8 39 27 4 39 17 21 39 52 18 38 52 12 - 55 0 0 39 15 6 9 35 33 37 266 -7 39 19 58 39 10 14 39 45 13 38 45 4 - 54 0 0 39 7 41 9 35 25 36 266 -7 39 12 33 39 2 48 39 37 49 38 37 37 - 53 0 0 38 59 56 9 35 18 35 267 -6 39 4 49 38 55 4 39 30 7 38 29 51 - 52 0 0 38 51 52 9 35 11 34 268 -5 38 56 45 38 47 0 39 22 5 38 21 45 - 51 0 0 38 43 30 9 35 3 34 269 -4 38 48 23 38 38 37 39 13 44 38 13 20 - 50 0 0 38 34 48 9 34 56 33 269 -3 38 39 41 38 29 54 39 5 4 38 4 36 - 49 0 0 38 25 46 9 34 49 32 270 -3 38 30 40 38 20 52 38 56 4 37 55 33 - 48 0 0 38 16 25 9 34 43 31 271 -2 38 21 20 38 11 31 38 46 46 37 46 10 - 47 0 0 38 6 45 9 34 36 31 271 -1 38 11 40 38 1 51 38 37 8 37 36 28 - 46 0 0 37 56 46 9 34 29 30 272 0 38 1 41 37 51 51 38 27 10 37 26 26 Uncertainty in time = +/- 9 secs Prediction of 2012 Sep 4.0 Data for the target star ------------------------ * name: TYC 1288-00498-1 * constellation : Taurus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 04 55 37.7878 DE: +19 13 37.036 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .023, .023 ) * V mag [mag]: 9.8 * B mag [mag]: 10.9 * Apparent position with proper motion RA(deg): 74.1049673292 DE(deg): 19.2464210461 * Equation of equinoxes (radians) : 0.000058313229296 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1762) Russell approx. diameter [km]: 17 approx. diameter ["]: .013 distance from Earth [AU]: 1.79300 * orbital information: orbit source: Preston date of fit: 2012 Jul 10 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1403 number of rejected observations: 35 time covered by the observations: 1947 Jun 15 - 2011 Dec 16 1 sigma uncertainty ellipse (major, minor, PA): 0.045, 0.024, 83° remarks: * orbital elements for (1762) Russell : Mean anomaly = 23.08016666 deg Arg. of pericenter = 235.29940233 deg Long. of node = 160.73491528 deg Inclination = 2.27711738 deg Eccentricity = 0.07797755 Semimajor axis = 2.87812082 AU Perihelion dist = 2.65369201 AU Mag: H = 11.24, G = 0.15 Epoch of elements : MJD 56234.40700000 TDT (2012 Nov 03.407) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Nov 3 1762 Russell 9h 46.9m UT 9.8 4 55 37.788 19 13 37.04TYC 1288-00498-1 10.9 15.9 17 2.4 1.793 -1.331 -4.37 -115.8752 19.229 29.17 -15.25 9.7816 -0.06943 0.28960 -3.83893 -0.89100 -0.00324 -0.00007 2000 22.19059020121030.00000235.299402160.734915 2.2771170.07797755 2.8781208 2.653692011.8 5.00.15 RATE 2.0185550 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.051 0.033 84 3.59 0.034 0 0-2-4 056174.0020121103_0498-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Sep 04, 19:08 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org