IOTA/IOTA-ES occultation update for (1041) Asta / TYC 2469-00117-1 event on 2009 Nov 05, 07:15 UT Visible from Summary ------- On 2009 Nov 05 UT, the 57 km diameter asteroid (1041) Asta will occult a 11.2 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.8 mag to 15.0 mag (the magnitude of the asteroid) for at most 5.2 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: 53 * date and approx. time of event: 2009 Nov 05, 07:06 - 2009 Nov 05, 07:20 UT * magnitude of target star: 11.2 * magnitude drop [mag]: 3.8 * estimated maximum duration [s]: 5.2 * Moon: 92 % sunlit, 42° distance * Sun: 105° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 64 * 1 sigma uncertainty interval [path widths]: +/- 1.21 * 1 sigma uncertainty interval [seconds]: +/- 5.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .044 +/- .039) * 1 sigma uncertainty ellipse (major, minor, PA): ( .044", .039", 93° ) * approx speed of asteroid's shadow [km/s]: 10.9688 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2469-00117-1 by 1041 Asta on 2009 Nov 5 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 -116 18 0 - 3 0 0 7 6 18 1 59 -70 -115 44 45 -116 51 34 ... .. .. ... .. .. -114 41 32 - 2 0 0 7 6 19 3 59 -72 -114 9 17 -115 14 7 -112 52 24 -116 34 17 -113 8 54 - 1 0 0 7 6 21 5 59 -73 -112 37 29 -113 40 35 -111 22 34 -114 58 28 -111 39 38 0 0 0 7 6 23 7 59 -74 -111 8 59 -112 10 33 -109 55 48 -113 26 25 -110 13 26 1 0 0 7 6 25 9 59 -75 -109 43 28 -110 43 39 -108 31 49 -111 57 45 Latitude Latitude Latitude Latitude -110 0 0 1 9 32 7 6 26 9 59 -75 0 48 15 1 30 55 - 0 2 57 2 23 1 -109 0 0 1 52 42 7 6 28 10 59 -76 1 31 15 2 14 15 0 39 39 3 6 46 -108 0 0 2 36 51 7 6 31 11 59 -77 2 15 13 2 58 34 1 23 13 3 51 31 -107 0 0 3 21 58 7 6 34 13 60 -77 3 0 9 3 43 51 2 7 44 4 37 14 -106 0 0 4 8 2 7 6 37 14 60 -77 3 46 3 4 30 6 2 53 13 5 23 55 -105 0 0 4 55 3 7 6 41 15 60 -78 4 32 53 5 17 19 3 39 38 6 11 34 -104 0 0 5 43 1 7 6 45 16 60 -78 5 20 41 6 5 27 4 27 0 7 0 10 -103 0 0 6 31 55 7 6 49 18 60 -78 6 9 23 6 54 32 5 15 17 7 49 43 -102 0 0 7 21 44 7 6 53 19 60 -78 6 59 1 7 44 32 6 4 28 8 40 11 -101 0 0 8 12 27 7 6 58 20 60 -78 7 49 33 8 35 26 6 54 33 9 31 33 -100 0 0 9 4 2 7 7 4 21 61 -77 8 40 57 9 27 13 7 45 31 10 23 48 - 99 0 0 9 56 29 7 7 9 23 61 -77 9 33 13 10 19 52 8 37 20 11 16 54 - 98 0 0 10 49 46 7 7 15 24 61 -76 10 26 19 11 13 20 9 30 0 12 10 51 - 97 0 0 11 43 52 7 7 22 25 62 -76 11 20 13 12 7 37 10 23 27 13 5 36 - 96 0 0 12 38 44 7 7 29 27 62 -75 12 14 54 13 2 41 11 17 41 14 1 8 - 95 0 0 13 34 20 7 7 36 28 62 -74 13 10 19 13 58 29 12 12 40 14 57 24 - 94 0 0 14 30 39 7 7 43 29 63 -73 14 6 27 14 54 59 13 8 22 15 54 21 - 93 0 0 15 27 38 7 7 51 31 63 -73 15 3 15 15 52 9 14 4 44 16 51 59 - 92 0 0 16 25 14 7 7 59 32 64 -72 16 0 41 16 49 56 15 1 44 17 50 13 - 91 0 0 17 23 25 7 8 7 33 65 -71 16 58 41 17 48 17 15 59 20 18 49 1 - 90 0 0 18 22 8 7 8 16 35 65 -70 17 57 13 18 47 10 16 57 27 19 48 20 - 89 0 0 19 21 19 7 8 25 36 66 -69 18 56 14 19 46 31 17 56 5 20 48 6 - 88 0 0 20 20 55 7 8 35 37 67 -67 19 55 40 20 46 17 18 55 8 21 48 16 - 87 0 0 21 20 53 7 8 44 38 67 -66 20 55 29 21 46 25 19 54 35 22 48 47 - 86 0 0 22 21 9 7 8 54 40 68 -65 21 55 36 22 46 50 20 54 21 23 49 35 - 85 0 0 23 21 39 7 9 5 41 69 -64 22 55 58 23 47 29 21 54 22 24 50 35 - 84 0 0 24 22 20 7 9 15 42 70 -63 23 56 31 24 48 18 22 54 36 25 51 44 - 83 0 0 25 23 7 7 9 26 43 71 -62 24 57 11 25 49 13 23 54 58 26 52 58 - 82 0 0 26 23 57 7 9 37 45 72 -61 25 57 53 26 50 9 24 55 24 27 54 12 - 81 0 0 27 24 45 7 9 48 46 73 -59 26 58 35 27 51 3 25 55 51 28 55 22 - 80 0 0 28 25 27 7 9 59 47 75 -58 27 59 11 28 51 51 26 56 13 29 56 24 - 79 0 0 29 25 58 7 10 10 48 76 -57 28 59 38 29 52 28 27 56 28 30 57 13 - 78 0 0 30 26 16 7 10 22 49 77 -56 29 59 51 30 52 50 28 56 31 31 57 46 - 77 0 0 31 26 14 7 10 33 50 79 -55 30 59 46 31 52 52 29 56 17 32 57 58 - 76 0 0 32 25 51 7 10 45 51 80 -54 31 59 19 32 52 31 30 55 43 33 57 44 - 75 0 0 33 25 0 7 10 57 52 82 -52 32 58 26 33 51 43 31 54 45 34 57 1 - 74 0 0 34 23 39 7 11 9 53 84 -51 33 57 4 34 50 23 32 53 19 35 55 45 - 73 0 0 35 21 44 7 11 21 54 85 -50 34 55 8 35 48 29 33 51 21 36 53 52 - 72 0 0 36 19 11 7 11 32 55 87 -49 35 52 35 36 45 56 34 48 48 37 51 18 - 71 0 0 37 15 56 7 11 44 56 89 -48 36 49 21 37 42 40 35 45 37 38 48 1 - 70 0 0 38 11 57 7 11 56 57 91 -47 37 45 24 38 38 40 36 41 43 39 43 56 - 69 0 0 39 7 11 7 12 8 58 93 -46 38 40 40 39 33 51 37 37 4 40 39 1 - 68 0 0 40 1 34 7 12 19 58 96 -45 39 35 6 40 28 11 38 31 38 41 33 13 - 67 0 0 40 55 5 7 12 31 59 98 -44 40 28 40 41 21 38 39 25 21 42 26 30 - 66 0 0 41 47 40 7 12 43 60 100 -43 41 21 20 42 14 8 40 18 11 43 18 49 - 65 0 0 42 39 18 7 12 54 60 103 -42 42 13 4 43 5 41 41 10 7 44 10 9 - 64 0 0 43 29 57 7 13 5 61 105 -41 43 3 49 43 56 15 42 1 5 45 0 28 - 63 0 0 44 19 36 7 13 16 61 108 -40 43 53 34 44 45 47 42 51 5 45 49 44 - 62 0 0 45 8 13 7 13 27 62 111 -39 44 42 18 45 34 17 43 40 6 46 37 56 - 61 0 0 45 55 47 7 13 38 62 113 -38 45 29 59 46 21 43 44 28 5 47 25 3 - 60 0 0 46 42 17 7 13 49 62 116 -37 46 16 37 47 8 5 45 15 2 48 11 5 - 59 0 0 47 27 43 7 13 59 63 119 -36 47 2 11 47 53 22 46 0 56 48 56 1 - 58 0 0 48 12 4 7 14 9 63 121 -35 47 46 41 48 37 34 46 45 46 49 39 50 - 57 0 0 48 55 20 7 14 20 63 124 -34 48 30 6 49 20 41 47 29 33 50 22 34 - 56 0 0 49 37 30 7 14 29 63 127 -33 49 12 26 50 2 42 48 12 16 51 4 10 - 55 0 0 50 18 36 7 14 39 63 129 -32 49 53 42 50 43 37 48 53 55 51 44 41 - 54 0 0 50 58 37 7 14 49 63 132 -32 50 33 53 51 23 28 49 34 31 52 24 6 - 53 0 0 51 37 34 7 14 58 64 135 -31 51 13 1 52 2 14 50 14 2 53 2 26 - 52 0 0 52 15 27 7 15 7 63 137 -30 51 51 4 52 39 57 50 52 31 53 39 42 - 51 0 0 52 52 17 7 15 16 63 140 -29 52 28 5 53 16 36 51 29 58 54 15 54 - 50 0 0 53 28 5 7 15 25 63 143 -29 53 4 4 53 52 13 52 6 22 54 51 4 - 49 0 0 54 2 51 7 15 33 63 145 -28 53 39 1 54 26 48 52 41 46 55 25 11 - 48 0 0 54 36 37 7 15 42 63 148 -27 54 12 58 55 0 23 53 16 9 55 58 18 - 47 0 0 55 9 24 7 15 50 63 150 -26 54 45 56 55 32 58 53 49 33 56 30 25 - 46 0 0 55 41 12 7 15 58 63 152 -26 55 17 55 56 4 35 54 21 59 57 1 34 - 45 0 0 56 12 3 7 16 6 63 155 -25 55 48 57 56 35 14 54 53 27 57 31 46 - 44 0 0 56 41 58 7 16 13 62 157 -24 56 19 3 57 4 58 55 24 0 58 1 2 - 43 0 0 57 10 57 7 16 21 62 159 -24 56 48 14 57 33 46 55 53 37 58 29 23 - 42 0 0 57 39 4 7 16 28 62 161 -23 57 16 31 58 1 41 56 22 20 58 56 50 - 41 0 0 58 6 17 7 16 35 62 164 -23 57 43 56 58 28 44 56 50 11 59 23 25 - 40 0 0 58 32 39 7 16 42 61 166 -22 58 10 29 58 54 55 57 17 10 59 49 9 - 39 0 0 58 58 12 7 16 49 61 168 -21 58 36 12 59 20 16 57 43 18 60 14 4 - 38 0 0 59 22 55 7 16 56 61 170 -21 59 1 6 59 44 49 58 8 38 60 38 10 - 37 0 0 59 46 51 7 17 2 60 171 -20 59 25 12 60 8 34 58 33 9 61 1 29 - 36 0 0 60 10 0 7 17 8 60 173 -20 59 48 32 60 31 33 58 56 53 61 24 2 - 35 0 0 60 32 24 7 17 15 60 175 -19 60 11 6 60 53 47 59 19 51 61 45 51 - 34 0 0 60 54 4 7 17 21 59 177 -19 60 32 56 61 15 17 59 42 5 62 6 56 - 33 0 0 61 15 1 7 17 27 59 179 -18 60 54 3 61 36 4 60 3 36 62 27 18 - 32 0 0 61 35 16 7 17 32 59 181 -18 61 14 28 61 56 9 60 24 23 62 47 0 - 31 0 0 61 54 51 7 17 38 58 182 -17 61 34 12 62 15 34 60 44 30 63 6 1 - 30 0 0 62 13 46 7 17 44 58 184 -17 61 53 16 62 34 20 61 3 56 63 24 24 - 29 0 0 62 32 2 7 17 49 58 186 -16 62 11 41 62 52 27 61 22 43 63 42 9 - 28 0 0 62 49 41 7 17 54 57 187 -16 62 29 29 63 9 57 61 40 52 63 59 16 - 27 0 0 63 6 43 7 17 59 57 189 -15 62 46 40 63 26 50 61 58 24 64 15 48 - 26 0 0 63 23 10 7 18 5 57 190 -15 63 3 15 63 43 9 62 15 19 64 31 46 - 25 0 0 63 39 2 7 18 10 56 192 -15 63 19 15 63 58 52 62 31 39 64 47 9 - 24 0 0 63 54 20 7 18 14 56 193 -14 63 34 42 64 14 2 62 47 24 65 1 59 - 23 0 0 64 9 6 7 18 19 56 195 -14 63 49 35 64 28 40 63 2 36 65 16 17 - 22 0 0 64 23 19 7 18 24 55 196 -13 64 3 56 64 42 45 63 17 15 65 30 4 - 21 0 0 64 37 1 7 18 29 55 198 -13 64 17 45 64 56 20 63 31 22 65 43 20 - 20 0 0 64 50 13 7 18 33 55 199 -13 64 31 4 65 9 24 63 44 58 65 56 7 - 19 0 0 65 2 55 7 18 38 54 200 -12 64 43 53 65 21 59 63 58 4 66 8 24 - 18 0 0 65 15 8 7 18 42 54 202 -12 64 56 13 65 34 6 64 10 40 66 20 14 - 17 0 0 65 26 52 7 18 46 54 203 -11 65 8 4 65 45 44 64 22 47 66 31 36 - 16 0 0 65 38 9 7 18 50 53 205 -11 65 19 28 65 56 55 64 34 25 66 42 31 - 15 0 0 65 49 0 7 18 55 53 206 -11 65 30 24 66 7 39 64 45 36 66 53 0 - 14 0 0 65 59 24 7 18 59 53 207 -10 65 40 54 66 17 57 64 56 20 67 3 4 - 13 0 0 66 9 22 7 19 3 52 209 -10 65 50 58 66 27 49 65 6 38 67 12 42 - 12 0 0 66 18 55 7 19 7 52 210 -10 66 0 36 66 37 17 65 16 30 67 21 56 - 11 0 0 66 28 3 7 19 10 52 211 -9 66 9 50 66 46 20 65 25 56 67 30 46 - 10 0 0 66 36 48 7 19 14 51 212 -9 66 18 39 66 54 59 65 34 57 67 39 13 - 9 0 0 66 45 8 7 19 18 51 214 -9 66 27 5 67 3 15 65 43 35 67 47 17 - 8 0 0 66 53 6 7 19 22 51 215 -8 66 35 7 67 11 8 65 51 48 67 54 58 - 7 0 0 67 0 41 7 19 25 50 216 -8 66 42 47 67 18 38 65 59 38 68 2 18 - 6 0 0 67 7 54 7 19 29 50 217 -8 66 50 3 67 25 47 66 7 5 68 9 15 - 5 0 0 67 14 44 7 19 33 50 219 -7 66 56 58 67 32 33 66 14 10 68 15 52 - 4 0 0 67 21 14 7 19 36 49 220 -7 67 3 32 67 38 59 66 20 52 68 22 8 - 3 0 0 67 27 22 7 19 40 49 221 -7 67 9 43 67 45 3 66 27 12 68 28 4 - 2 0 0 67 33 9 7 19 43 49 222 -6 67 15 34 67 50 47 66 33 12 68 33 39 - 1 0 0 67 38 36 7 19 46 48 223 -6 67 21 4 67 56 11 66 38 50 68 38 55 0 0 0 67 43 43 7 19 50 48 225 -6 67 26 14 68 1 15 66 44 7 68 43 51 1 0 0 67 48 30 7 19 53 48 226 -5 67 31 4 68 5 59 66 49 3 68 48 28 2 0 0 67 52 58 7 19 56 47 227 -5 67 35 34 68 10 24 66 53 40 68 52 46 3 0 0 67 57 5 7 20 0 47 228 -5 67 39 45 68 14 29 66 57 56 68 56 45 4 0 0 68 0 54 7 20 3 47 229 -5 67 43 36 68 18 16 67 1 53 69 0 26 5 0 0 68 4 24 7 20 6 46 230 -4 67 47 8 68 21 43 67 5 30 69 3 49 6 0 0 68 7 35 7 20 9 46 232 -4 67 50 21 68 24 53 67 8 47 69 6 53 7 0 0 68 10 28 7 20 12 46 233 -4 67 53 15 68 27 43 67 11 46 69 9 40 8 0 0 68 13 2 7 20 15 45 234 -3 67 55 51 68 30 16 67 14 25 69 12 9 9 0 0 68 15 18 7 20 18 45 235 -3 67 58 8 68 32 31 67 16 46 69 14 20 10 0 0 68 17 16 7 20 21 45 236 -3 68 0 7 68 34 27 67 18 47 69 16 14 11 0 0 68 18 56 7 20 24 44 237 -3 68 1 48 68 36 6 67 20 30 69 17 50 12 0 0 68 20 17 7 20 27 44 238 -2 68 3 10 68 37 27 67 21 55 69 19 9 13 0 0 68 21 21 7 20 30 44 239 -2 68 4 15 68 38 30 67 23 1 69 20 11 14 0 0 68 22 7 7 20 33 43 241 -2 68 5 1 68 39 16 67 23 48 69 20 56 15 0 0 68 22 36 7 20 36 43 242 -1 68 5 30 68 39 44 67 24 17 69 21 23 16 0 0 68 22 46 7 20 39 43 243 -1 68 5 41 68 39 55 67 24 28 69 21 34 17 0 0 68 22 39 7 20 42 42 244 -1 68 5 33 68 39 48 67 24 21 69 21 27 18 0 0 68 22 14 7 20 45 42 245 -1 68 5 8 68 39 23 67 23 55 69 21 3 19 0 0 68 21 32 7 20 47 42 246 0 68 4 25 68 38 41 67 23 10 69 20 23 20 0 0 68 20 32 7 20 50 41 247 0 68 3 24 68 37 41 67 22 8 69 19 25 Uncertainty in time = +/- 7 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: TYC 2469-00117-1 * constellation : Gemini * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 08 06 17.0489 DE: +30 28 30.461 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .021, .035 ) * V mag [mag]: 11.2 * B mag [mag]: 12.3 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1041) Asta approx. diameter [km]: 57 approx. diameter ["]: .033 distance from Earth [AU]: 2.36200 * orbital information: orbit source: Preston date of fit: 2008 Mar 20 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 642 number of rejected observations: 38 time covered by the observations: 1906 Dec 18 - 2007 Aug 13 1 sigma uncertainty ellipse (major, minor, PA): 0.038, 0.017, 94° remarks: * orbital elements for (1041) Asta : Mean anomaly = 42.94568846 deg Arg. of pericenter = 342.20607682 deg Long. of node = 60.29229540 deg Inclination = 13.89849670 deg Eccentricity = 0.13999684 Semimajor axis = 3.07531667 AU Perihelion dist = 2.64478205 AU Mag: H = 10.07, G = 0.15 Epoch of elements : MJD 55140.30300000 TDT (2009 Nov 05.303) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Nov 5 1041 Asta 7h 15.0m UT 11.2 8 6 17.049 30 28 30.46TYC 2469-00117-1 12.3 15.0 57 5.2 2.362 1.537 11.67 -31.8376 30.472 67.15 -15.74 7.2501 -0.22280 0.38117 5.33983 3.13306 -0.00555 0.00092 2000 42.890313200911 5.00000342.206077 60.292295 13.8984970.13999684 3.0753167 2.6447821 9.9 5.00.15 RATE 1.8275500 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.044 0.039 93 2.21 0.040 0 54545.5020091105_0117-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 16:09 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org