IOTA/IOTA-ES occultation update for (3899) Wichterle / TYC 6826-00121-1 event on 2009 Jun 02, 08:05 UT Visible from Summary ------- On 2009 Jun 02 UT, the 24 km diameter asteroid (3899) Wichterle will occult a 10.4 mag star in the constellation Ophiuchus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.0 mag to 16.4 mag (the magnitude of the asteroid) for at most 1.7 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: 17 * date and approx. time of event: 2009 Jun 02, 08:00 - 2009 Jun 02, 08:10 UT * magnitude of target star: 10.4 * magnitude drop [mag]: 6.0 * estimated maximum duration [s]: 1.7 * Moon: 73 % sunlit, 75° distance * Sun: 168° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 37 * 1 sigma uncertainty interval [path widths]: +/- 3.86 * 1 sigma uncertainty interval [seconds]: +/- 9.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .080 +/- .050) * 1 sigma uncertainty ellipse (major, minor, PA): ( .080", .050", 95° ) * approx speed of asteroid's shadow [km/s]: 14.3060 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6826-00121-1 by 3899 Wichterle on 2009 Jun 2 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 -175 0 0 43 51 20 8 10 18 1 124 -9 44 3 21 43 39 23 .. .. .. .. .. .. -174 0 0 43 23 9 8 10 18 2 124 -10 43 35 7 43 11 14 45 9 31 .. .. .. -173 0 0 42 55 6 8 10 17 2 125 -10 43 7 1 42 43 14 44 41 3 .. .. .. -172 0 0 42 27 13 8 10 17 3 126 -11 42 39 5 42 15 24 44 12 44 .. .. .. -171 0 0 41 59 30 8 10 16 4 126 -12 42 11 19 41 47 44 43 44 36 .. .. .. -170 0 0 41 31 59 8 10 15 5 127 -13 41 43 46 41 20 15 43 16 38 .. .. .. -169 0 0 41 4 40 8 10 14 6 128 -14 41 16 24 40 52 59 42 48 54 .. .. .. -168 0 0 40 37 35 8 10 13 7 128 -15 40 49 16 40 25 57 42 21 22 38 57 51 -167 0 0 40 10 44 8 10 12 8 129 -16 40 22 22 39 59 9 41 54 5 38 31 24 -166 0 0 39 44 8 8 10 11 9 130 -16 39 55 43 39 32 35 41 27 2 38 5 11 -165 0 0 39 17 48 8 10 9 9 130 -17 39 29 20 39 6 18 41 0 16 37 39 15 -164 0 0 38 51 44 8 10 7 10 131 -18 39 3 14 38 40 18 40 33 46 37 13 35 -163 0 0 38 25 58 8 10 5 11 132 -19 38 37 25 38 14 35 40 7 33 36 48 13 -162 0 0 38 0 31 8 10 3 12 132 -20 38 11 55 37 49 10 39 41 40 36 23 9 -161 0 0 37 35 22 8 10 1 13 133 -20 37 46 43 37 24 4 39 16 5 35 58 23 -160 0 0 37 10 33 8 9 58 14 134 -21 37 21 51 36 59 18 38 50 50 35 33 58 -159 0 0 36 46 5 8 9 56 15 134 -22 36 57 20 36 34 52 38 25 56 35 9 52 -158 0 0 36 21 57 8 9 53 15 135 -23 36 33 10 36 10 47 38 1 23 34 46 8 -157 0 0 35 58 11 8 9 50 16 136 -24 36 9 21 35 47 4 37 37 12 34 22 45 -156 0 0 35 34 48 8 9 47 17 136 -24 35 45 55 35 23 44 37 13 23 33 59 44 -155 0 0 35 11 47 8 9 44 18 137 -25 35 22 52 35 0 46 36 49 58 33 37 5 -154 0 0 34 49 10 8 9 41 19 138 -26 35 0 12 34 38 11 36 26 56 33 14 50 -153 0 0 34 26 57 8 9 37 20 138 -27 34 37 56 34 16 0 36 4 19 32 52 58 -152 0 0 34 5 8 8 9 34 20 139 -27 34 16 5 33 54 14 35 42 6 32 31 31 -151 0 0 33 43 44 8 9 30 21 140 -28 33 54 38 33 32 53 35 20 19 32 10 28 -150 0 0 33 22 46 8 9 26 22 140 -29 33 33 37 33 11 57 34 58 58 31 49 50 -149 0 0 33 2 13 8 9 22 23 141 -29 33 13 2 32 51 27 34 38 3 31 29 38 -148 0 0 32 42 7 8 9 18 24 142 -30 32 52 54 32 31 23 34 17 34 31 9 52 -147 0 0 32 22 28 8 9 13 24 143 -31 32 33 12 32 11 46 33 57 33 30 50 32 -146 0 0 32 3 15 8 9 9 25 143 -31 32 13 57 31 52 36 33 38 0 30 31 38 -145 0 0 31 44 30 8 9 5 26 144 -32 31 55 10 31 33 53 33 18 54 30 13 12 -144 0 0 31 26 13 8 9 0 27 145 -33 31 36 50 31 15 38 33 0 16 29 55 13 -143 0 0 31 8 24 8 8 55 27 146 -33 31 18 59 30 57 51 32 42 8 29 37 41 -142 0 0 30 51 3 8 8 50 28 146 -34 31 1 36 30 40 32 32 24 28 29 20 38 -141 0 0 30 34 11 8 8 45 29 147 -34 30 44 42 30 23 42 32 7 17 29 4 3 -140 0 0 30 17 48 8 8 40 29 148 -35 30 28 17 30 7 21 31 50 36 28 47 56 -139 0 0 30 1 54 8 8 35 30 149 -36 30 12 21 29 51 29 31 34 24 28 32 18 -138 0 0 29 46 29 8 8 30 31 150 -36 29 56 55 29 36 6 31 18 43 28 17 10 -137 0 0 29 31 35 8 8 24 31 151 -37 29 41 58 29 21 14 31 3 32 28 2 30 -136 0 0 29 17 10 8 8 19 32 151 -37 29 27 32 29 6 51 30 48 51 27 48 20 -135 0 0 29 3 16 8 8 13 33 152 -37 29 13 36 28 52 58 30 34 41 27 34 39 -134 0 0 28 49 51 8 8 7 33 153 -38 29 0 10 28 39 35 30 21 2 27 21 28 -133 0 0 28 36 57 8 8 2 34 154 -38 28 47 14 28 26 43 30 7 54 27 8 48 -132 0 0 28 24 34 8 7 56 34 155 -39 28 34 50 28 14 21 29 55 17 26 56 37 -131 0 0 28 12 42 8 7 50 35 156 -39 28 22 56 28 2 30 29 43 12 26 44 57 -130 0 0 28 1 21 8 7 44 35 157 -39 28 11 33 27 51 10 29 31 38 26 33 47 -129 0 0 27 50 31 8 7 38 36 158 -40 28 0 42 27 40 22 29 20 36 26 23 8 -128 0 0 27 40 12 8 7 32 36 159 -40 27 50 22 27 30 4 29 10 5 26 12 59 -127 0 0 27 30 24 8 7 25 37 160 -40 27 40 33 27 20 17 29 0 7 26 3 21 -126 0 0 27 21 8 8 7 19 37 161 -40 27 31 16 27 11 2 28 50 41 25 54 15 -125 0 0 27 12 23 8 7 13 38 162 -41 27 22 30 27 2 19 28 41 46 25 45 39 -124 0 0 27 4 10 8 7 6 38 163 -41 27 14 16 26 54 7 28 33 24 25 37 34 -123 0 0 26 56 29 8 7 0 38 164 -41 27 6 34 26 46 27 28 25 35 25 30 1 -122 0 0 26 49 20 8 6 53 39 165 -41 26 59 24 26 39 18 28 18 17 25 22 59 -121 0 0 26 42 42 8 6 47 39 166 -41 26 52 45 26 32 41 28 11 33 25 16 28 -120 0 0 26 36 37 8 6 40 39 167 -41 26 46 39 26 26 37 28 5 20 25 10 28 -119 0 0 26 31 3 8 6 34 40 168 -41 26 41 5 26 21 4 27 59 41 25 5 0 -118 0 0 26 26 2 8 6 27 40 170 -41 26 36 3 26 16 3 27 54 34 25 0 4 -117 0 0 26 21 32 8 6 20 40 171 -41 26 31 33 26 11 34 27 49 59 24 55 39 -116 0 0 26 17 35 8 6 14 40 172 -41 26 27 35 26 7 37 27 45 58 24 51 46 -115 0 0 26 14 10 8 6 7 40 173 -41 26 24 10 26 4 13 27 42 29 24 48 24 -114 0 0 26 11 17 8 6 0 41 174 -41 26 21 17 26 1 20 27 39 33 24 45 34 -113 0 0 26 8 57 8 5 53 41 175 -41 26 18 56 25 59 0 27 37 10 24 43 16 -112 0 0 26 7 9 8 5 47 41 177 -41 26 17 7 25 57 12 27 35 20 24 41 30 -111 0 0 26 5 53 8 5 40 41 178 -41 26 15 51 25 55 56 27 34 2 24 40 15 -110 0 0 26 5 9 8 5 33 41 179 -40 26 15 7 25 55 12 27 33 18 24 39 32 -109 0 0 26 4 57 8 5 26 41 180 -40 26 14 56 25 55 1 27 33 6 24 39 21 -108 0 0 26 5 18 8 5 19 41 181 -40 26 15 17 25 55 22 27 33 27 24 39 41 -107 0 0 26 6 11 8 5 13 41 182 -40 26 16 10 25 56 15 27 34 21 24 40 34 -106 0 0 26 7 37 8 5 6 41 184 -39 26 17 36 25 57 40 27 35 48 24 41 58 -105 0 0 26 9 35 8 4 59 41 185 -39 26 19 34 25 59 38 27 37 48 24 43 53 -104 0 0 26 12 4 8 4 52 41 186 -39 26 22 4 26 2 7 27 40 21 24 46 21 -103 0 0 26 15 7 8 4 46 40 187 -38 26 25 6 26 5 9 27 43 26 24 49 20 -102 0 0 26 18 41 8 4 39 40 188 -38 26 28 41 26 8 43 27 47 5 24 52 51 -101 0 0 26 22 48 8 4 32 40 189 -38 26 32 48 26 12 49 27 51 16 24 56 53 -100 0 0 26 27 26 8 4 26 40 191 -37 26 37 28 26 17 27 27 56 0 25 1 27 - 99 0 0 26 32 37 8 4 19 40 192 -37 26 42 39 26 22 37 28 1 16 25 6 33 - 98 0 0 26 38 20 8 4 12 39 193 -36 26 48 23 26 28 20 28 7 5 25 12 10 - 97 0 0 26 44 35 8 4 6 39 194 -36 26 54 38 26 34 34 28 13 27 25 18 18 - 96 0 0 26 51 22 8 3 59 39 195 -35 27 1 26 26 41 20 28 20 21 25 24 58 - 95 0 0 26 58 40 8 3 53 38 196 -35 27 8 45 26 48 37 28 27 48 25 32 10 - 94 0 0 27 6 31 8 3 46 38 197 -34 27 16 37 26 56 27 28 35 47 25 39 52 - 93 0 0 27 14 53 8 3 40 37 198 -34 27 25 0 27 4 48 28 44 19 25 48 6 - 92 0 0 27 23 47 8 3 34 37 199 -33 27 33 55 27 13 41 28 53 22 25 56 51 - 91 0 0 27 33 12 8 3 27 37 200 -32 27 43 21 27 23 5 29 2 58 26 6 6 - 90 0 0 27 43 9 8 3 21 36 201 -32 27 53 19 27 33 0 29 13 6 26 15 53 - 89 0 0 27 53 37 8 3 15 36 202 -31 28 3 48 27 43 27 29 23 45 26 26 11 - 88 0 0 28 4 36 8 3 9 35 203 -30 28 14 49 27 54 25 29 34 57 26 36 59 - 87 0 0 28 16 6 8 3 3 35 204 -30 28 26 21 28 5 54 29 46 40 26 48 18 - 86 0 0 28 28 8 8 2 57 34 205 -29 28 38 23 28 17 54 29 58 54 27 0 7 - 85 0 0 28 40 40 8 2 51 34 206 -28 28 50 57 28 30 24 30 11 40 27 12 26 - 84 0 0 28 53 42 8 2 45 33 207 -28 29 4 1 28 43 25 30 24 57 27 25 15 - 83 0 0 29 7 15 8 2 40 32 208 -27 29 17 36 28 56 57 30 38 45 27 38 35 - 82 0 0 29 21 19 8 2 34 32 209 -26 29 31 41 29 10 59 30 53 4 27 52 24 - 81 0 0 29 35 52 8 2 29 31 210 -25 29 46 16 29 25 30 31 7 54 28 6 43 - 80 0 0 29 50 55 8 2 23 31 210 -25 30 1 21 29 40 32 31 23 14 28 21 31 - 79 0 0 30 6 28 8 2 18 30 211 -24 30 16 56 29 56 3 31 39 4 28 36 48 - 78 0 0 30 22 31 8 2 13 29 212 -23 30 33 0 30 12 3 31 55 24 28 52 35 - 77 0 0 30 39 2 8 2 8 29 213 -22 30 49 34 30 28 33 32 12 14 29 8 49 - 76 0 0 30 56 2 8 2 3 28 214 -22 31 6 36 30 45 31 32 29 33 29 25 33 - 75 0 0 31 13 31 8 1 58 27 214 -21 31 24 7 31 2 58 32 47 21 29 42 44 - 74 0 0 31 31 29 8 1 53 26 215 -20 31 42 7 31 20 53 33 5 38 30 0 24 - 73 0 0 31 49 54 8 1 48 26 216 -19 32 0 34 31 39 16 33 24 24 30 18 31 - 72 0 0 32 8 47 8 1 44 25 217 -18 32 19 30 31 58 7 33 43 38 30 37 5 - 71 0 0 32 28 7 8 1 40 24 217 -18 32 38 52 32 17 25 34 3 19 30 56 6 - 70 0 0 32 47 55 8 1 35 23 218 -17 32 58 42 32 37 10 34 23 28 31 15 34 - 69 0 0 33 8 9 8 1 31 23 219 -16 33 18 58 32 57 21 34 44 4 31 35 27 - 68 0 0 33 28 49 8 1 27 22 220 -15 33 39 41 33 17 59 35 5 7 31 55 47 - 67 0 0 33 49 54 8 1 23 21 220 -14 34 0 49 33 39 2 35 26 36 32 16 32 - 66 0 0 34 11 25 8 1 20 20 221 -13 34 22 23 34 0 31 35 48 30 32 37 42 - 65 0 0 34 33 21 8 1 16 19 222 -12 34 44 21 34 22 24 36 10 50 32 59 17 - 64 0 0 34 55 41 8 1 13 19 222 -12 35 6 44 34 44 42 36 33 34 33 21 15 - 63 0 0 35 18 25 8 1 9 18 223 -11 35 29 31 35 7 23 36 56 43 33 43 37 - 62 0 0 35 41 33 8 1 6 17 224 -10 35 52 41 35 30 28 37 20 15 34 6 22 - 61 0 0 36 5 3 8 1 3 16 224 -9 36 16 13 35 53 55 37 44 10 34 29 29 - 60 0 0 36 28 55 8 1 0 15 225 -8 36 40 8 36 17 44 38 8 27 34 52 59 - 59 0 0 36 53 8 8 0 58 14 226 -7 37 4 24 36 41 55 38 33 6 35 16 49 - 58 0 0 37 17 43 8 0 55 14 226 -6 37 29 2 37 6 26 38 58 7 35 41 0 - 57 0 0 37 42 37 8 0 53 13 227 -5 37 53 59 37 31 18 39 23 27 36 5 32 - 56 0 0 38 7 51 8 0 50 12 228 -5 38 19 16 37 56 29 39 49 8 36 30 22 - 55 0 0 38 33 24 8 0 48 11 228 -4 38 44 52 38 22 0 40 15 7 36 55 32 - 54 0 0 38 59 15 8 0 46 10 229 -3 39 10 45 38 47 48 40 41 24 37 20 59 - 53 0 0 39 25 23 8 0 45 9 230 -2 39 36 56 39 13 53 41 7 59 37 46 44 - 52 0 0 39 51 48 8 0 43 8 230 -1 40 3 24 39 40 15 41 34 50 38 12 45 - 51 0 0 40 18 28 8 0 42 7 231 0 40 30 7 40 6 52 42 1 57 38 39 2 Uncertainty in time = +/- 11 secs [Prediction of 2008 Apr 25.0] Data for the target star ------------------------ * name: TYC 6826-00121-1 * constellation : Ophiuchus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 17 32 15.3307 DE: -23 10 00.044 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .024, .027 ) * V mag [mag]: 10.4 * B mag [mag]: 11.0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3899) Wichterle approx. diameter [km]: 24 approx. diameter ["]: .013 distance from Earth [AU]: 2.64400 * orbital information: orbit source: Preston date of fit: 2008 Apr 25 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 845 number of rejected observations: 19 time covered by the observations: 1948 Oct 10 - 2008 Mar 12 1 sigma uncertainty ellipse (major, minor, PA): 0.076, 0.042, 95° remarks: * orbital elements for (3899) Wichterle : Mean anomaly = 223.10096585 deg Arg. of pericenter = 327.17950623 deg Long. of node = 82.13116040 deg Inclination = 2.82027734 deg Eccentricity = 0.18081738 Semimajor axis = 3.18250067 AU Perihelion dist = 2.60704925 AU Mag: H = 11.44, G = 0.15 Epoch of elements : MJD 54984.33700000 TDT (2009 Jun 02.337) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jun 2 3899 Wichterle 8h 5.4m UT 10.4 17 32 15.331-23 10 0.04TYC 6826-00121-1 11.0 16.4 24 1.7 2.644 -1.948 -0.01 -109.2284 -23.166 58.14 22.22 8.0908 -0.00024 0.75543 -8.07469 -0.00381 -0.00114 0.00005 2000 222.3480602009 529.00000327.179506 82.131160 2.8202770.18081738 3.1825007 2.607049211.2 5.00.15 RATE 1.7360060 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.080 0.050 95 4.86 0.048 0 54581.5020090602_0121-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Apr 25, 07:00 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org