IOTA/IOTA-ES occultation update for (5290) Langevin / TYC 5179-01730-1 event on 2008 Aug 01, 23:29 UT Visible from Russia, Europe Summary ------- On 2008 Aug 01 UT, the 15 km diameter asteroid (5290) Langevin will occult a 9.5 mag star in the constellation Aquarius for observers along a path across Russia, Europe. In the case of an occultation, the combined light of the asteroid and the star will drop by 5.9 mag to 15.4 mag (the magnitude of the asteroid) for at most 1.4 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 14 * date and approx. time of event: 2008 Aug 01, 23:22 - 2008 Aug 01, 23:36 UT * magnitude of target star: 9.5 * magnitude drop [mag]: 5.9 * estimated maximum duration [s]: 1.4 * Moon: 0 % sunlit, 164° distance * Sun: 164° distance * rough path description: Russia, Europe Additional comments ------------------- wide double star The occultation path -------------------- * approximate projected width [km]: 20 * 1 sigma uncertainty interval [path widths]: +/- 4.67 * 1 sigma uncertainty interval [seconds]: +/- 10.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .094 +/- .059) * 1 sigma uncertainty ellipse (major, minor, PA): ( .095", .058", 80° ) * approx speed of asteroid's shadow [km/s]: 10.4514 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5179-01730-1 by 5290 Langevin on 2008 Aug 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 - 76 0 0 18 9 29 23 36 29 4 93 -1 18 15 2 18 3 56 19 7 15 .. .. .. - 75 0 0 18 10 36 23 36 28 5 93 -1 18 16 9 18 5 4 19 8 23 .. .. .. - 74 0 0 18 12 18 23 36 26 6 94 -2 18 17 51 18 6 45 19 10 4 .. .. .. - 73 0 0 18 14 33 23 36 25 7 94 -3 18 20 6 18 9 1 19 12 20 17 17 39 - 72 0 0 18 17 22 23 36 23 8 94 -4 18 22 55 18 11 49 19 15 9 17 20 27 - 71 0 0 18 20 44 23 36 21 9 95 -5 18 26 17 18 15 11 19 18 33 17 23 48 - 70 0 0 18 24 39 23 36 19 10 95 -6 18 30 13 18 19 7 19 22 30 17 27 42 - 69 0 0 18 29 8 23 36 16 11 95 -7 18 34 42 18 23 35 19 27 0 17 32 9 - 68 0 0 18 34 10 23 36 14 12 96 -7 18 39 44 18 28 37 19 32 4 17 37 9 - 67 0 0 18 39 45 23 36 11 13 96 -8 18 45 18 18 34 11 19 37 41 17 42 42 - 66 0 0 18 45 52 23 36 8 13 96 -9 18 51 26 18 40 19 19 43 51 17 48 46 - 65 0 0 18 52 32 23 36 5 14 97 -10 18 58 7 18 46 58 19 50 34 17 55 24 - 64 0 0 18 59 45 23 36 1 15 97 -11 19 5 19 18 54 11 19 57 50 18 2 33 - 63 0 0 19 7 30 23 35 57 16 97 -12 19 13 5 19 1 55 20 5 39 18 10 14 - 62 0 0 19 15 47 23 35 54 17 98 -12 19 21 22 19 10 12 20 14 0 18 18 27 - 61 0 0 19 24 35 23 35 49 18 98 -13 19 30 11 19 19 0 20 22 53 18 27 12 - 60 0 0 19 33 56 23 35 45 19 99 -14 19 39 32 19 28 20 20 32 19 18 36 28 - 59 0 0 19 43 48 23 35 41 20 99 -15 19 49 25 19 38 12 20 42 16 18 46 16 - 58 0 0 19 54 12 23 35 36 21 100 -15 19 59 49 19 48 35 20 52 45 18 56 34 - 57 0 0 20 5 7 23 35 31 22 100 -16 20 10 45 19 59 29 21 3 45 19 7 24 - 56 0 0 20 16 33 23 35 26 22 100 -17 20 22 11 20 10 55 21 15 17 19 18 44 - 55 0 0 20 28 29 23 35 21 23 101 -18 20 34 8 20 22 51 21 27 20 19 30 34 - 54 0 0 20 40 56 23 35 15 24 101 -18 20 46 36 20 35 17 21 39 53 19 42 55 - 53 0 0 20 53 53 23 35 10 25 102 -19 20 59 34 20 48 14 21 52 57 19 55 46 - 52 0 0 21 7 21 23 35 4 26 103 -20 21 13 2 21 1 40 22 6 32 20 9 6 - 51 0 0 21 21 18 23 34 58 27 103 -20 21 27 0 21 15 37 22 20 36 20 22 57 - 50 0 0 21 35 45 23 34 51 27 104 -21 21 41 27 21 30 3 22 35 11 20 37 16 - 49 0 0 21 50 41 23 34 45 28 104 -22 21 56 24 21 44 58 22 50 15 20 52 4 - 48 0 0 22 6 6 23 34 39 29 105 -22 22 11 50 22 0 22 23 5 48 21 7 22 - 47 0 0 22 21 59 23 34 32 30 106 -23 22 27 44 22 16 15 23 21 50 21 23 7 - 46 0 0 22 38 21 23 34 25 31 106 -24 22 44 7 22 32 36 23 38 21 21 39 21 - 45 0 0 22 55 12 23 34 18 31 107 -24 23 0 58 22 49 26 23 55 20 21 56 2 - 44 0 0 23 12 29 23 34 11 32 108 -25 23 18 17 23 6 43 24 12 48 22 13 12 - 43 0 0 23 30 15 23 34 3 33 108 -25 23 36 3 23 24 27 24 30 42 22 30 48 - 42 0 0 23 48 27 23 33 56 34 109 -26 23 54 16 23 42 39 24 49 5 22 48 51 - 41 0 0 24 7 6 23 33 48 34 110 -26 24 12 56 24 1 17 25 7 54 23 7 21 - 40 0 0 24 26 12 23 33 41 35 111 -27 24 32 3 24 20 22 25 27 10 23 26 16 - 39 0 0 24 45 43 23 33 33 36 112 -27 24 51 35 24 39 52 25 46 52 23 45 38 - 38 0 0 25 5 41 23 33 25 37 112 -28 25 11 34 24 59 48 26 6 59 24 5 25 - 37 0 0 25 26 3 23 33 16 37 113 -28 25 31 57 25 20 9 26 27 32 24 25 37 - 36 0 0 25 46 50 23 33 8 38 114 -29 25 52 45 25 40 55 26 48 30 24 46 13 - 35 0 0 26 8 1 23 33 0 39 115 -29 26 13 57 26 2 6 27 9 53 25 7 14 - 34 0 0 26 29 36 23 32 51 39 116 -30 26 35 33 26 23 40 27 31 40 25 28 38 - 33 0 0 26 51 35 23 32 43 40 117 -30 26 57 33 26 45 37 27 53 50 25 50 26 - 32 0 0 27 13 56 23 32 34 40 118 -30 27 19 55 27 7 57 28 16 23 26 12 36 - 31 0 0 27 36 40 23 32 25 41 119 -31 27 42 40 27 30 40 28 39 19 26 35 8 - 30 0 0 27 59 45 23 32 16 41 120 -31 28 5 47 27 53 44 29 2 36 26 58 3 - 29 0 0 28 23 12 23 32 7 42 122 -31 28 29 15 28 17 10 29 26 15 27 21 18 - 28 0 0 28 47 0 23 31 58 42 123 -32 28 53 4 28 40 57 29 50 16 27 44 54 - 27 0 0 29 11 8 23 31 49 43 124 -32 29 17 13 29 5 3 30 14 36 28 8 50 - 26 0 0 29 35 36 23 31 39 43 125 -32 29 41 42 29 29 30 30 39 16 28 33 6 - 25 0 0 30 0 22 23 31 30 44 126 -32 30 6 30 29 54 15 31 4 15 28 57 41 - 24 0 0 30 25 27 23 31 21 44 128 -33 30 31 36 30 19 19 31 29 33 29 22 34 - 23 0 0 30 50 50 23 31 11 45 129 -33 30 57 0 30 44 41 31 55 9 29 47 45 - 22 0 0 31 16 30 23 31 2 45 130 -33 31 22 41 31 10 20 32 21 2 30 13 13 - 21 0 0 31 42 27 23 30 52 45 132 -33 31 48 39 31 36 15 32 47 11 30 38 57 - 20 0 0 32 8 39 23 30 43 46 133 -33 32 14 53 32 2 26 33 13 37 31 4 58 - 19 0 0 32 35 7 23 30 33 46 135 -33 32 41 22 32 28 53 33 40 17 31 31 13 - 18 0 0 33 1 49 23 30 23 46 136 -33 33 8 5 32 55 34 34 7 12 31 57 43 - 17 0 0 33 28 44 23 30 14 46 137 -33 33 35 2 33 22 28 34 34 20 32 24 27 - 16 0 0 33 55 53 23 30 4 47 139 -33 34 2 11 33 49 35 35 1 42 32 51 23 - 15 0 0 34 23 14 23 29 54 47 140 -33 34 29 33 34 16 55 35 29 15 33 18 32 - 14 0 0 34 50 46 23 29 45 47 142 -33 34 57 7 34 44 26 35 57 0 33 45 53 - 13 0 0 35 18 29 23 29 35 47 143 -33 35 24 51 35 12 8 36 24 55 34 13 24 - 12 0 0 35 46 22 23 29 25 47 145 -33 35 52 45 35 40 0 36 53 0 34 41 5 - 11 0 0 36 14 24 23 29 16 47 147 -33 36 20 48 36 8 0 37 21 15 35 8 56 - 10 0 0 36 42 34 23 29 6 47 148 -33 36 48 59 36 36 9 37 49 37 35 36 54 - 9 0 0 37 10 52 23 28 57 47 150 -33 37 17 18 37 4 26 38 18 6 36 5 1 - 8 0 0 37 39 16 23 28 47 47 151 -32 37 45 43 37 32 49 38 46 42 36 33 14 - 7 0 0 38 7 46 23 28 37 47 153 -32 38 14 14 38 1 18 39 15 23 37 1 33 - 6 0 0 38 36 20 23 28 28 47 154 -32 38 42 50 38 29 52 39 44 9 37 29 58 - 5 0 0 39 4 59 23 28 19 47 156 -32 39 11 30 38 58 29 40 12 59 37 58 26 - 4 0 0 39 33 41 23 28 9 47 157 -31 39 40 13 39 27 10 40 41 51 38 26 58 - 3 0 0 40 2 25 23 28 0 47 159 -31 40 8 58 39 55 54 41 10 46 38 55 33 - 2 0 0 40 31 11 23 27 51 46 160 -31 40 37 45 40 24 38 41 39 42 39 24 10 - 1 0 0 40 59 57 23 27 42 46 162 -31 41 6 32 40 53 24 42 8 38 39 52 47 0 0 0 41 28 43 23 27 33 46 163 -30 41 35 19 41 22 9 42 37 33 40 21 24 1 0 0 41 57 28 23 27 24 46 165 -30 42 4 4 41 50 53 43 6 26 40 50 1 2 0 0 42 26 11 23 27 15 45 166 -30 42 32 48 42 19 35 43 35 18 41 18 36 3 0 0 42 54 51 23 27 6 45 168 -29 43 1 28 42 48 14 44 4 5 41 47 8 4 0 0 43 23 27 23 26 57 45 169 -29 43 30 5 43 16 49 44 32 49 42 15 37 5 0 0 43 51 58 23 26 49 44 171 -28 43 58 37 43 45 20 45 1 27 42 44 2 6 0 0 44 20 24 23 26 40 44 172 -28 44 27 4 44 13 45 45 30 0 43 12 21 7 0 0 44 48 43 23 26 32 44 174 -28 44 55 24 44 42 4 45 58 25 43 40 35 8 0 0 45 16 56 23 26 23 43 175 -27 45 23 37 45 10 16 46 26 43 44 8 42 9 0 0 45 45 0 23 26 15 43 176 -27 45 51 42 45 38 20 46 54 53 44 36 42 10 0 0 46 12 56 23 26 7 42 178 -26 46 19 38 46 6 15 47 22 53 45 4 34 11 0 0 46 40 42 23 25 59 42 179 -26 46 47 24 46 34 1 47 50 43 45 32 16 12 0 0 47 8 18 23 25 52 41 180 -25 47 15 0 47 1 36 48 18 22 45 59 49 13 0 0 47 35 43 23 25 44 41 182 -25 47 42 25 47 29 1 48 45 50 46 27 11 14 0 0 48 2 56 23 25 36 40 183 -24 48 9 38 47 56 14 49 13 5 46 54 22 15 0 0 48 29 56 23 25 29 40 184 -24 48 36 39 48 23 14 49 40 7 47 21 21 16 0 0 48 56 43 23 25 22 39 185 -23 49 3 26 48 50 1 50 6 55 47 48 7 17 0 0 49 23 17 23 25 15 39 186 -23 49 30 0 49 16 35 50 33 29 48 14 40 18 0 0 49 49 36 23 25 8 38 188 -22 49 56 19 49 42 53 50 59 48 48 40 59 19 0 0 50 15 39 23 25 1 38 189 -22 50 22 22 50 8 57 51 25 51 49 7 4 20 0 0 50 41 28 23 24 54 37 190 -21 50 48 10 50 34 46 51 51 38 49 32 53 21 0 0 51 6 59 23 24 47 37 191 -21 51 13 42 51 0 18 52 17 7 49 58 27 22 0 0 51 32 14 23 24 41 36 192 -20 51 38 57 51 25 33 52 42 20 50 23 44 23 0 0 51 57 12 23 24 35 36 193 -20 52 3 54 51 50 31 53 7 14 50 48 45 24 0 0 52 21 52 23 24 29 35 195 -19 52 28 34 52 15 11 53 31 51 51 13 28 25 0 0 52 46 14 23 24 23 35 196 -19 52 52 55 52 39 34 53 56 8 51 37 54 26 0 0 53 10 17 23 24 17 34 197 -18 53 16 58 53 3 37 54 20 6 52 2 2 27 0 0 53 34 1 23 24 11 34 198 -17 53 40 42 53 27 22 54 43 45 52 25 51 28 0 0 53 57 26 23 24 6 33 199 -17 54 4 6 53 50 47 55 7 3 52 49 21 29 0 0 54 20 31 23 24 0 33 200 -16 54 27 10 54 13 52 55 30 2 53 12 32 30 0 0 54 43 16 23 23 55 32 201 -16 54 49 54 54 36 38 55 52 40 53 35 24 31 0 0 55 5 40 23 23 50 31 202 -15 55 12 18 54 59 3 56 14 56 53 57 55 32 0 0 55 27 44 23 23 45 31 203 -15 55 34 21 55 21 8 56 36 52 54 20 6 33 0 0 55 49 27 23 23 40 30 204 -14 55 56 3 55 42 52 56 58 27 54 41 57 34 0 0 56 10 49 23 23 35 30 205 -14 56 17 25 56 4 14 57 19 40 55 3 28 35 0 0 56 31 50 23 23 30 29 206 -13 56 38 25 56 25 16 57 40 31 55 24 38 36 0 0 56 52 29 23 23 26 29 207 -13 56 59 3 56 45 57 58 1 1 55 45 26 37 0 0 57 12 48 23 23 21 28 208 -12 57 19 20 57 6 16 58 21 9 56 5 54 38 0 0 57 32 44 23 23 17 28 209 -12 57 39 16 57 26 13 58 40 55 56 26 0 39 0 0 57 52 19 23 23 13 27 210 -11 57 58 50 57 45 49 59 0 19 56 45 45 40 0 0 58 11 32 23 23 9 26 211 -10 58 18 2 58 5 3 59 19 21 57 5 9 41 0 0 58 30 24 23 23 5 26 212 -10 58 36 52 58 23 56 59 38 1 57 24 11 42 0 0 58 48 53 23 23 1 25 213 -9 58 55 21 58 42 27 59 56 18 57 42 52 43 0 0 59 7 1 23 22 58 25 214 -9 59 13 28 59 0 36 60 14 14 58 1 12 44 0 0 59 24 48 23 22 54 24 215 -8 59 31 13 59 18 23 60 31 48 58 19 9 45 0 0 59 42 12 23 22 51 24 216 -8 59 48 36 59 35 49 60 49 0 58 36 46 46 0 0 59 59 15 23 22 47 23 217 -7 60 5 38 59 52 53 61 5 51 58 54 1 47 0 0 60 15 57 23 22 44 23 218 -7 60 22 19 60 9 36 61 22 19 59 10 55 48 0 0 60 32 17 23 22 41 22 219 -6 60 38 37 60 25 58 61 38 26 59 27 27 49 0 0 60 48 16 23 22 38 22 220 -6 60 54 35 60 41 58 61 54 12 59 43 38 50 0 0 61 3 54 23 22 35 21 221 -5 61 10 11 60 57 37 62 9 36 59 59 28 51 0 0 61 19 10 23 22 32 21 222 -5 61 25 27 61 12 54 62 24 40 60 14 57 52 0 0 61 34 6 23 22 30 20 223 -4 61 40 21 61 27 51 62 39 22 60 30 6 53 0 0 61 48 41 23 22 27 20 223 -4 61 54 55 61 42 27 62 53 43 60 44 53 54 0 0 62 2 55 23 22 25 19 224 -3 62 9 8 61 56 43 63 7 44 60 59 20 55 0 0 62 16 48 23 22 22 19 225 -3 62 23 0 62 10 38 63 21 24 61 13 27 56 0 0 62 30 22 23 22 20 18 226 -2 62 36 32 62 24 12 63 34 44 61 27 13 57 0 0 62 43 35 23 22 17 18 227 -2 62 49 44 62 37 27 63 47 43 61 40 39 58 0 0 62 56 28 23 22 15 17 228 -2 63 2 36 62 50 21 64 0 23 61 53 45 59 0 0 63 9 2 23 22 13 17 229 -1 63 15 8 63 2 56 64 12 43 62 6 31 60 0 0 63 21 16 23 22 11 16 230 -1 63 27 21 63 15 12 64 24 44 62 18 58 61 0 0 63 33 11 23 22 9 16 231 0 63 39 15 63 27 7 64 36 26 62 31 5 Uncertainty in time = +/- 11 secs [Prediction of 2008 Jul 22.0] Data for the target star ------------------------ * name: TYC 5179-01730-1 * constellation : Aquarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 20 56 28.3630 DE: -01 34 10.426 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .017, .017 ) * V mag [mag]: 9.5 * B mag [mag]: 9.9 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (5290) Langevin approx. diameter [km]: 15 approx. diameter ["]: .013 distance from Earth [AU]: 1.60000 * orbital information: orbit source: Preston date of fit: 2008 Jul 22 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 737 number of rejected observations: 11 time covered by the observations: 1981 Sep 01 - 2008 Jul 07 1 sigma uncertainty ellipse (major, minor, PA): 0.093, 0.055, 80° remarks: * orbital elements for (5290) Langevin : Mean anomaly = 329.14764828 deg Arg. of pericenter = 158.78699111 deg Long. of node = 189.20747768 deg Inclination = 11.18137323 deg Eccentricity = 0.06323163 Semimajor axis = 2.73555495 AU Perihelion dist = 2.56258136 AU Mag: H = 12.22, G = 0.15 Epoch of elements : MJD 54679.97900000 TDT (2008 Aug 01.979) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Aug 1 5290 Langevin 23h 29.0m UT 9.5 20 56 28.363- 1 34 10.43TYC 5179-01730-1 10.0 15.4 15 1.4 1.600 -1.965 -13.53 10.9171 -1.565 -170.69 17.72 23.4841 -0.28287 0.61665 -5.36112 -2.46111 -0.00016 -0.00154 2000 326.9738312008 723.00000158.786991189.207478 11.1813730.06323163 2.7355550 2.562581411.8 5.00.15 RATE 2.1783920 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.095 0.058 80 5.67 0.060 0 54669.5020080801_1730-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Jul 22, 23:04 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org