IOTA/IOTA-ES occultation update for (1907) Rudneva / TYC 5784-01154-1 event on 2008 Jul 09, 03:57 UT Visible from Brazil, Peru Summary ------- On 2008 Jul 09 UT, the 15 km diameter asteroid (1907) Rudneva will occult a 9.3 mag star in the constellation Aquarius for observers along a path across Brazil, Peru. In the case of an occultation, the combined light of the asteroid and the star will drop by 6.3 mag to 15.6 mag (the magnitude of the asteroid) for at most 2.0 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: 21 * date and approx. time of event: 2008 Jul 09, 03:44 - 2008 Jul 09, 04:10 UT * midpoint of event [JD]: 2454656.66434167 * magnitude of target star: 9.3 * magnitude drop [mag]: 6.3 * estimated maximum duration [s]: 2.0 * Moon: 40 % sunlit, 132° distance * Sun: 149° distance * rough path description: Brazil, Peru The occultation path -------------------- * approximate projected width [km]: 16 * 1 sigma uncertainty interval [path widths]: +/- 3.21 * 1 sigma uncertainty interval [seconds]: +/- 8.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .054 +/- .042) * 1 sigma uncertainty ellipse (major, minor, PA): ( .054", .041", 78° ) * approx speed of asteroid's shadow [km/s]: 7.2347 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5784-01154-1 by 1907 Rudneva on 2008 Jul 9 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 -120 0 0 - 1 5 16 4 10 23 1 103 -29 - 1 0 46 - 1 9 46 - 0 31 52 .. .. .. -119 0 0 - 1 19 2 4 10 23 2 103 -30 - 1 14 33 - 1 23 31 - 0 45 42 .. .. .. -118 0 0 - 1 32 20 4 10 22 3 103 -31 - 1 27 51 - 1 36 48 - 0 59 3 .. .. .. -117 0 0 - 1 45 9 4 10 21 4 103 -32 - 1 40 41 - 1 49 37 - 1 11 56 - 2 18 14 -116 0 0 - 1 57 30 4 10 20 5 103 -33 - 1 53 3 - 2 1 58 - 1 24 21 - 2 30 32 -115 0 0 - 2 9 23 4 10 18 6 103 -34 - 2 4 56 - 2 13 50 - 1 36 17 - 2 42 21 -114 0 0 - 2 20 47 4 10 16 7 103 -35 - 2 16 20 - 2 25 14 - 1 47 44 - 2 53 42 -113 0 0 - 2 31 43 4 10 14 8 103 -36 - 2 27 17 - 2 36 9 - 1 58 43 - 3 4 35 -112 0 0 - 2 42 11 4 10 12 9 103 -37 - 2 37 45 - 2 46 37 - 2 9 14 - 3 15 0 -111 0 0 - 2 52 10 4 10 9 10 103 -38 - 2 47 45 - 2 56 36 - 2 19 16 - 3 24 57 -110 0 0 - 3 1 41 4 10 6 11 103 -39 - 2 57 16 - 3 6 6 - 2 28 50 - 3 34 25 -109 0 0 - 3 10 44 4 10 3 12 103 -40 - 3 6 19 - 3 15 9 - 2 37 56 - 3 43 25 -108 0 0 - 3 19 19 4 9 59 13 103 -41 - 3 14 54 - 3 23 43 - 2 46 33 - 3 51 58 -107 0 0 - 3 27 26 4 9 56 14 103 -42 - 3 23 1 - 3 31 50 - 2 54 42 - 4 0 2 -106 0 0 - 3 35 4 4 9 52 15 103 -43 - 3 30 40 - 3 39 28 - 3 2 23 - 4 7 38 -105 0 0 - 3 42 15 4 9 47 16 103 -44 - 3 37 51 - 3 46 38 - 3 9 35 - 4 14 46 -104 0 0 - 3 48 57 4 9 43 17 103 -45 - 3 44 34 - 3 53 20 - 3 16 20 - 4 21 27 -103 0 0 - 3 55 12 4 9 38 18 103 -45 - 3 50 48 - 3 59 34 - 3 22 36 - 4 27 39 -102 0 0 - 4 0 58 4 9 33 19 103 -46 - 3 56 35 - 4 5 21 - 3 28 25 - 4 33 24 -101 0 0 - 4 6 17 4 9 28 20 103 -47 - 4 1 54 - 4 10 40 - 3 33 45 - 4 38 42 -100 0 0 - 4 11 8 4 9 22 21 103 -48 - 4 6 46 - 4 15 30 - 3 38 38 - 4 43 31 - 99 0 0 - 4 15 32 4 9 16 22 103 -49 - 4 11 9 - 4 19 54 - 3 43 3 - 4 47 53 - 98 0 0 - 4 19 27 4 9 10 23 103 -50 - 4 15 5 - 4 23 49 - 3 47 0 - 4 51 48 - 97 0 0 - 4 22 56 4 9 4 24 103 -51 - 4 18 34 - 4 27 18 - 3 50 30 - 4 55 15 - 96 0 0 - 4 25 57 4 8 57 25 103 -52 - 4 21 35 - 4 30 18 - 3 53 32 - 4 58 15 - 95 0 0 - 4 28 30 4 8 51 26 103 -52 - 4 24 8 - 4 32 51 - 3 56 6 - 5 0 47 - 94 0 0 - 4 30 36 4 8 44 26 103 -53 - 4 26 15 - 4 34 57 - 3 58 13 - 5 2 52 - 93 0 0 - 4 32 15 4 8 36 27 103 -54 - 4 27 53 - 4 36 36 - 3 59 52 - 5 4 30 - 92 0 0 - 4 33 26 4 8 29 28 103 -55 - 4 29 5 - 4 37 48 - 4 1 5 - 5 5 41 - 91 0 0 - 4 34 11 4 8 21 29 103 -56 - 4 29 50 - 4 38 32 - 4 1 50 - 5 6 26 - 90 0 0 - 4 34 28 4 8 14 30 103 -57 - 4 30 7 - 4 38 50 - 4 2 7 - 5 6 43 - 89 0 0 - 4 34 19 4 8 5 31 103 -57 - 4 29 58 - 4 38 40 - 4 1 58 - 5 6 33 - 88 0 0 - 4 33 43 4 7 57 32 103 -58 - 4 29 21 - 4 38 4 - 4 1 22 - 5 5 56 - 87 0 0 - 4 32 39 4 7 49 33 103 -59 - 4 28 18 - 4 37 0 - 4 0 19 - 5 4 53 - 86 0 0 - 4 31 9 4 7 40 34 103 -60 - 4 26 48 - 4 35 30 - 3 58 49 - 5 3 23 - 85 0 0 - 4 29 13 4 7 31 35 103 -60 - 4 24 52 - 4 33 34 - 3 56 52 - 5 1 27 - 84 0 0 - 4 26 50 4 7 22 36 103 -61 - 4 22 28 - 4 31 11 - 3 54 28 - 4 59 4 - 83 0 0 - 4 24 0 4 7 12 37 103 -62 - 4 19 39 - 4 28 21 - 3 51 38 - 4 56 15 - 82 0 0 - 4 20 44 4 7 3 38 104 -62 - 4 16 22 - 4 25 5 - 3 48 21 - 4 52 59 - 81 0 0 - 4 17 1 4 6 53 39 104 -63 - 4 12 40 - 4 21 23 - 3 44 38 - 4 49 18 - 80 0 0 - 4 12 53 4 6 43 39 104 -64 - 4 8 31 - 4 17 14 - 3 40 29 - 4 45 10 - 79 0 0 - 4 8 18 4 6 33 40 104 -64 - 4 3 56 - 4 12 39 - 3 35 53 - 4 40 36 - 78 0 0 - 4 3 17 4 6 23 41 104 -65 - 3 58 55 - 4 7 39 - 3 30 51 - 4 35 36 - 77 0 0 - 3 57 50 4 6 12 42 105 -65 - 3 53 28 - 4 2 12 - 3 25 23 - 4 30 10 - 76 0 0 - 3 51 57 4 6 2 43 105 -66 - 3 47 35 - 3 56 19 - 3 19 29 - 4 24 18 - 75 0 0 - 3 45 38 4 5 51 44 105 -66 - 3 41 16 - 3 50 1 - 3 13 9 - 4 18 1 - 74 0 0 - 3 38 54 4 5 40 45 105 -67 - 3 34 31 - 3 43 16 - 3 6 23 - 4 11 18 - 73 0 0 - 3 31 44 4 5 29 46 106 -67 - 3 27 21 - 3 36 6 - 2 59 12 - 4 4 9 - 72 0 0 - 3 24 8 4 5 17 47 106 -68 - 3 19 45 - 3 28 31 - 2 51 34 - 3 56 35 - 71 0 0 - 3 16 7 4 5 6 48 106 -68 - 3 11 44 - 3 20 30 - 2 43 32 - 3 48 36 - 70 0 0 - 3 7 41 4 4 54 48 107 -68 - 3 3 17 - 3 12 4 - 2 35 3 - 3 40 11 - 69 0 0 - 2 58 49 4 4 42 49 107 -69 - 2 54 26 - 3 3 13 - 2 26 10 - 3 31 21 - 68 0 0 - 2 49 32 4 4 30 50 108 -69 - 2 45 8 - 2 53 56 - 2 16 51 - 3 22 7 - 67 0 0 - 2 39 51 4 4 18 51 108 -69 - 2 35 26 - 2 44 15 - 2 7 7 - 3 12 27 - 66 0 0 - 2 29 44 4 4 5 52 109 -69 - 2 25 19 - 2 34 8 - 1 56 58 - 3 2 22 - 65 0 0 - 2 19 12 4 3 53 53 109 -69 - 2 14 48 - 2 23 37 - 1 46 25 - 2 51 53 - 64 0 0 - 2 8 16 4 3 40 53 110 -69 - 2 3 51 - 2 12 41 - 1 35 26 - 2 40 59 - 63 0 0 - 1 56 55 4 3 27 54 110 -69 - 1 52 30 - 2 1 21 - 1 24 3 - 2 29 41 - 62 0 0 - 1 45 10 4 3 14 55 111 -69 - 1 40 44 - 1 49 36 - 1 12 15 - 2 17 58 - 61 0 0 - 1 33 1 4 3 1 56 112 -69 - 1 28 34 - 1 37 26 - 1 0 3 - 2 5 51 - 60 0 0 - 1 20 27 4 2 48 57 113 -69 - 1 16 0 - 1 24 53 - 0 47 27 - 1 53 20 - 59 0 0 - 1 7 29 4 2 35 58 114 -69 - 1 3 2 - 1 11 56 - 0 34 26 - 1 40 25 - 58 0 0 - 0 54 7 4 2 21 58 115 -69 - 0 49 40 - 0 58 34 - 0 21 2 - 1 27 6 - 57 0 0 - 0 40 22 4 2 7 59 115 -68 - 0 35 54 - 0 44 49 - 0 7 13 - 1 13 23 - 56 0 0 - 0 26 13 4 1 54 60 117 -68 - 0 21 45 - 0 30 41 0 6 59 - 0 59 17 - 55 0 0 - 0 11 41 4 1 40 61 118 -68 - 0 7 12 - 0 16 9 0 21 34 - 0 44 48 - 54 0 0 0 3 15 4 1 26 61 119 -67 0 7 44 - 0 1 14 0 36 33 - 0 29 55 - 53 0 0 0 18 34 4 1 12 62 120 -67 0 23 3 0 14 5 0 51 55 - 0 14 40 - 52 0 0 0 34 15 4 0 57 63 121 -66 0 38 45 0 29 46 1 7 39 0 0 59 - 51 0 0 0 50 20 4 0 43 63 123 -66 0 54 50 0 45 50 1 23 47 0 17 0 - 50 0 0 1 6 46 4 0 29 64 124 -65 1 11 17 1 2 16 1 40 17 0 33 23 - 49 0 0 1 23 36 4 0 14 64 126 -64 1 28 7 1 19 5 1 57 10 0 50 9 - 48 0 0 1 40 47 4 0 0 65 128 -64 1 45 18 1 36 15 2 14 24 1 7 17 - 47 0 0 1 58 20 3 59 45 66 130 -63 2 2 52 1 53 48 2 32 1 1 24 47 - 46 0 0 2 16 15 3 59 30 66 131 -63 2 20 47 2 11 42 2 49 59 1 42 38 - 45 0 0 2 34 31 3 59 15 67 133 -62 2 39 4 2 29 58 3 8 19 2 0 50 - 44 0 0 2 53 8 3 59 0 67 136 -61 2 57 42 2 48 35 3 27 0 2 19 24 - 43 0 0 3 12 6 3 58 45 67 138 -60 3 16 40 3 7 33 3 46 2 2 38 19 - 42 0 0 3 31 25 3 58 30 68 140 -60 3 36 0 3 26 51 4 5 24 2 57 34 - 41 0 0 3 51 5 3 58 15 68 142 -59 3 55 40 3 46 30 4 25 7 3 17 10 - 40 0 0 4 11 4 3 58 0 68 145 -58 4 15 39 4 6 29 4 45 11 3 37 6 - 39 0 0 4 31 23 3 57 45 69 147 -57 4 35 59 4 26 48 5 5 34 3 57 21 - 38 0 0 4 52 2 3 57 30 69 150 -56 4 56 38 4 47 26 5 26 16 4 17 56 - 37 0 0 5 13 0 3 57 14 69 153 -56 5 17 37 5 8 23 5 47 18 4 38 50 - 36 0 0 5 34 17 3 56 59 69 155 -55 5 38 54 5 29 40 6 8 38 5 0 3 - 35 0 0 5 55 52 3 56 44 69 158 -54 6 0 30 5 51 14 6 30 18 5 21 35 - 34 0 0 6 17 46 3 56 28 69 161 -53 6 22 24 6 13 7 6 52 15 5 43 25 - 33 0 0 6 39 57 3 56 13 69 163 -52 6 44 36 6 35 18 7 14 30 6 5 32 - 32 0 0 7 2 26 3 55 58 69 166 -51 7 7 5 6 57 47 7 37 3 6 27 58 - 31 0 0 7 25 12 3 55 42 69 169 -50 7 29 52 7 20 32 7 59 53 6 50 40 - 30 0 0 7 48 14 3 55 27 69 171 -50 7 52 55 7 43 34 8 22 59 7 13 39 - 29 0 0 8 11 33 3 55 11 68 174 -49 8 16 14 8 6 53 8 46 22 7 36 54 - 28 0 0 8 35 8 3 54 56 68 177 -48 8 39 50 8 30 27 9 10 0 8 0 25 - 27 0 0 8 58 58 3 54 41 68 179 -47 9 3 40 8 54 17 9 33 54 8 24 11 - 26 0 0 9 23 4 3 54 25 67 181 -46 9 27 46 9 18 21 9 58 3 8 48 13 - 25 0 0 9 47 24 3 54 10 67 184 -45 9 52 7 9 42 41 10 22 27 9 12 29 - 24 0 0 10 11 58 3 53 55 66 186 -44 10 16 41 10 7 14 10 47 4 9 37 0 - 23 0 0 10 36 45 3 53 40 66 188 -43 10 41 29 10 32 1 11 11 56 10 1 44 - 22 0 0 11 1 46 3 53 25 65 190 -42 11 6 30 10 57 2 11 37 0 10 26 41 - 21 0 0 11 26 59 3 53 10 65 192 -41 11 31 44 11 22 15 12 2 17 10 51 51 - 20 0 0 11 52 25 3 52 55 64 194 -40 11 57 10 11 47 40 12 27 46 11 17 13 - 19 0 0 12 18 2 3 52 40 63 196 -39 12 22 48 12 13 16 12 53 26 11 42 47 - 18 0 0 12 43 50 3 52 25 63 197 -38 12 48 37 12 39 4 13 19 18 12 8 32 - 17 0 0 13 9 49 3 52 10 62 199 -37 13 14 36 13 5 3 13 45 20 12 34 28 - 16 0 0 13 35 58 3 51 55 61 201 -36 13 40 45 13 31 11 14 11 32 13 0 33 - 15 0 0 14 2 16 3 51 41 61 202 -35 14 7 4 13 57 29 14 37 54 13 26 49 - 14 0 0 14 28 44 3 51 26 60 203 -34 14 33 32 14 23 56 15 4 24 13 53 13 - 13 0 0 14 55 19 3 51 12 59 205 -33 15 0 8 14 50 31 15 31 3 14 19 45 - 12 0 0 15 22 3 3 50 58 58 206 -32 15 26 51 15 17 14 15 57 49 14 46 26 - 11 0 0 15 48 53 3 50 44 57 207 -32 15 53 42 15 44 4 16 24 42 15 13 14 - 10 0 0 16 15 50 3 50 30 57 208 -31 16 20 39 16 11 1 16 51 41 15 40 8 - 9 0 0 16 42 53 3 50 16 56 210 -30 16 47 42 16 38 3 17 18 47 16 7 8 - 8 0 0 17 10 1 3 50 2 55 211 -29 17 14 51 17 5 11 17 45 57 16 34 14 - 7 0 0 17 37 14 3 49 49 54 212 -28 17 42 4 17 32 23 18 13 13 17 1 24 - 6 0 0 18 4 30 3 49 36 53 213 -27 18 9 21 17 59 40 18 40 32 17 28 39 - 5 0 0 18 31 50 3 49 22 52 214 -26 18 36 41 18 27 0 19 7 54 17 55 57 - 4 0 0 18 59 13 3 49 9 52 215 -25 19 4 5 18 54 22 19 35 19 18 23 18 - 3 0 0 19 26 38 3 48 56 51 215 -24 19 31 30 19 21 47 20 2 46 18 50 41 - 2 0 0 19 54 5 3 48 44 50 216 -23 19 58 57 19 49 13 20 30 14 19 18 6 - 1 0 0 20 21 32 3 48 31 49 217 -22 20 26 24 20 16 40 20 57 43 19 45 32 0 0 0 20 49 0 3 48 19 48 218 -21 20 53 52 20 44 8 21 25 12 20 12 58 1 0 0 21 16 26 3 48 7 47 219 -20 21 21 19 21 11 34 21 52 40 20 40 23 2 0 0 21 43 52 3 47 55 46 220 -19 21 48 45 21 39 0 22 20 7 21 7 48 3 0 0 22 11 16 3 47 43 45 220 -18 22 16 9 22 6 24 22 47 32 21 35 11 4 0 0 22 38 38 3 47 32 44 221 -17 22 43 30 22 33 45 23 14 54 22 2 31 5 0 0 23 5 56 3 47 21 43 222 -16 23 10 49 23 1 3 23 42 13 22 29 49 6 0 0 23 33 10 3 47 10 42 222 -15 23 38 3 23 28 18 24 9 28 22 57 3 7 0 0 24 0 20 3 46 59 42 223 -14 24 5 13 23 55 28 24 36 38 23 24 13 8 0 0 24 27 25 3 46 48 41 224 -13 24 32 18 24 22 33 25 3 44 23 51 17 9 0 0 24 54 25 3 46 38 40 224 -12 24 59 18 24 49 32 25 30 43 24 18 16 10 0 0 25 21 18 3 46 28 39 225 -11 25 26 11 25 16 25 25 57 36 24 45 9 11 0 0 25 48 3 3 46 18 38 226 -10 25 52 56 25 43 11 26 24 21 25 11 56 12 0 0 26 14 42 3 46 8 37 226 -9 26 19 35 26 9 49 26 50 59 25 38 34 13 0 0 26 41 12 3 45 59 36 227 -8 26 46 5 26 36 19 27 17 29 26 5 5 14 0 0 27 7 33 3 45 49 35 228 -7 27 12 26 27 2 41 27 43 50 26 31 27 15 0 0 27 33 45 3 45 41 34 228 -6 27 38 38 27 28 53 28 10 1 26 57 40 16 0 0 27 59 47 3 45 32 33 229 -5 28 4 40 27 54 55 28 36 2 27 23 43 17 0 0 28 25 39 3 45 23 32 229 -4 28 30 31 28 20 47 29 1 52 27 49 36 18 0 0 28 51 19 3 45 15 31 230 -3 28 56 11 28 46 27 29 27 31 28 15 18 19 0 0 29 16 48 3 45 7 30 231 -2 29 21 40 29 11 56 29 52 58 28 40 48 20 0 0 29 42 5 3 44 59 29 231 -1 29 46 56 29 37 13 30 18 13 29 6 6 21 0 0 30 7 9 3 44 52 29 232 0 30 12 0 30 2 17 30 43 15 29 31 12 Uncertainty in time = +/- 9 secs [Prediction of 2008 Jun 6.0] Data for the target star ------------------------ * name: TYC 5784-01154-1 * constellation : Aquarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 21 17 32.6603 DE: -13 25 09.117 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .022, .025 ) * V mag [mag]: 9.3 * B mag [mag]: 10.2 * Apparent position with proper motion RA(deg): 319.5108279694 DE(deg): -13.3820438441 * Equation of equinoxes (radians) : 0.000051306710801 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1907) Rudneva approx. diameter [km]: 15 approx. diameter ["]: .013 distance from Earth [AU]: 1.61800 * orbital information: orbit source: Preston date of fit: 2008 Jun 04 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1015 number of rejected observations: 45 time covered by the observations: 1938 Mar 08 - 2008 May 10 1 sigma uncertainty ellipse (major, minor, PA): 0.050, 0.033, 76° remarks: * orbital elements for (1907) Rudneva : Mean anomaly = 87.58838282 deg Arg. of pericenter = 61.21745051 deg Long. of node = 152.12593293 deg Inclination = 3.21555108 deg Eccentricity = 0.04368922 Semimajor axis = 2.54676202 AU Perihelion dist = 2.43549597 AU Mag: H = 12.07, G = 0.15 Epoch of elements : MJD 54656.16500000 TDT (2008 Jul 09.165) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Jul 9 1907 Rudneva 3h 56.7m UT 9.3 21 17 32.660-13 25 9.12TYC 5784-01154-1 10.2 15.6 15 2.0 1.618 -1.414 -8.22 -27.2441 -13.416 122.15 22.32 3.9442 -0.13125 0.32982 -3.79368 -1.51086 -0.00256 -0.00100 2000 86.0933372008 7 3.00000 61.217451152.125933 3.2155510.04368922 2.5467620 2.435496011.8 5.00.15 RATE 2.4250540 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.054 0.041 78 4.21 0.042 0 54623.5020080709_1154-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Jun 06, 21:50 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org