IOTA/IOTA-ES occultation update for (302) Clarissa / TYC 6906-01035-1 event on 2009 Sep 10, 13:24 UT Visible from Summary ------- On 2009 Sep 10 UT, the 39 km diameter asteroid (302) Clarissa will occult a 11.8 mag star in the constellation Capricornus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.1 mag to 14.8 mag (the magnitude of the asteroid) for at most 11.1 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: 56 * date and approx. time of event: 2009 Sep 10, 12:53 - 2009 Sep 10, 13:48 UT * magnitude of target star: 11.8 * magnitude drop [mag]: 3.1 * estimated maximum duration [s]: 11.1 * Moon: 67 % sunlit, 116° distance * Sun: 134° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 39 * 1 sigma uncertainty interval [path widths]: +/- 1.13 * 1 sigma uncertainty interval [seconds]: +/- 11.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .035 +/- .037) * 1 sigma uncertainty ellipse (major, minor, PA): ( .037", .035", 357° ) * approx speed of asteroid's shadow [km/s]: 3.4584 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6906-01035-1 by 302 Clarissa on 2009 Sep 10 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 63 0 0 5 32 7 13 48 21 37 125 0 5 44 11 5 20 4 6 11 29 4 52 50 64 0 0 5 1 42 13 48 0 38 125 -1 5 13 45 4 49 39 5 41 2 4 22 28 65 0 0 4 31 24 13 47 39 39 125 -2 4 43 27 4 19 22 5 10 41 3 52 13 66 0 0 4 1 14 13 47 18 40 125 -3 4 13 15 3 49 13 4 40 28 3 22 5 67 0 0 3 31 11 13 46 56 41 125 -4 3 43 12 3 19 11 4 10 23 2 52 5 68 0 0 3 1 18 13 46 34 42 126 -5 3 13 18 2 49 19 3 40 26 2 22 15 69 0 0 2 31 34 13 46 11 43 126 -6 2 43 33 2 19 35 3 10 39 1 52 34 70 0 0 2 1 59 13 45 48 44 126 -7 2 13 57 1 50 2 2 41 2 1 23 2 71 0 0 1 32 35 13 45 24 45 126 -8 1 44 32 1 20 39 2 11 34 0 53 42 72 0 0 1 3 22 13 45 1 46 126 -9 1 15 18 0 51 27 1 42 18 0 24 32 73 0 0 0 34 21 13 44 37 47 126 -10 0 46 16 0 22 27 1 13 13 - 0 4 26 74 0 0 0 5 32 13 44 12 48 127 -11 0 17 25 - 0 6 22 0 44 20 - 0 33 12 75 0 0 - 0 23 5 13 43 47 49 127 -12 - 0 11 13 - 0 34 58 0 15 40 - 1 1 45 76 0 0 - 0 51 29 13 43 22 50 127 -13 - 0 39 38 - 1 3 20 - 0 12 48 - 1 30 6 77 0 0 - 1 19 40 13 42 57 51 127 -14 - 1 7 50 - 1 31 30 - 0 41 2 - 1 58 13 78 0 0 - 1 47 37 13 42 31 52 127 -15 - 1 35 47 - 1 59 25 - 1 9 3 - 2 26 6 79 0 0 - 2 15 19 13 42 6 53 128 -15 - 2 3 31 - 2 27 7 - 1 36 49 - 2 53 44 80 0 0 - 2 42 47 13 41 39 54 128 -16 - 2 31 0 - 2 54 33 - 2 4 21 - 3 21 8 81 0 0 - 3 9 59 13 41 13 55 128 -17 - 2 58 14 - 3 21 45 - 2 31 37 - 3 48 17 82 0 0 - 3 36 57 13 40 46 56 128 -18 - 3 25 12 - 3 48 41 - 2 58 38 - 4 15 10 83 0 0 - 4 3 38 13 40 20 57 128 -19 - 3 51 55 - 4 15 21 - 3 25 24 - 4 41 47 84 0 0 - 4 30 3 13 39 53 58 129 -20 - 4 18 21 - 4 41 44 - 3 51 53 - 5 8 9 85 0 0 - 4 56 11 13 39 25 59 129 -21 - 4 44 31 - 5 7 52 - 4 18 5 - 5 34 13 86 0 0 - 5 22 3 13 38 58 60 129 -22 - 5 10 23 - 5 33 42 - 4 44 1 - 6 0 1 87 0 0 - 5 47 37 13 38 30 61 130 -23 - 5 35 59 - 5 59 15 - 5 9 40 - 6 25 31 88 0 0 - 6 12 54 13 38 2 62 130 -24 - 6 1 17 - 6 24 31 - 5 35 1 - 6 50 44 89 0 0 - 6 37 53 13 37 35 63 130 -25 - 6 26 18 - 6 49 29 - 6 0 4 - 7 15 39 90 0 0 - 7 2 34 13 37 6 64 131 -25 - 6 51 0 - 7 14 9 - 6 24 49 - 7 40 16 91 0 0 - 7 26 57 13 36 38 65 131 -26 - 7 15 24 - 7 38 30 - 6 49 16 - 8 4 34 92 0 0 - 7 51 1 13 36 10 65 132 -27 - 7 39 30 - 8 2 33 - 7 13 24 - 8 28 34 93 0 0 - 8 14 47 13 35 42 66 132 -28 - 8 3 16 - 8 26 17 - 7 37 14 - 8 52 15 94 0 0 - 8 38 13 13 35 13 67 133 -29 - 8 26 44 - 8 49 42 - 8 0 44 - 9 15 38 95 0 0 - 9 1 20 13 34 44 68 133 -30 - 8 49 52 - 9 12 48 - 8 23 56 - 9 38 41 96 0 0 - 9 24 8 13 34 16 69 134 -31 - 9 12 41 - 9 35 34 - 8 46 47 -10 1 24 97 0 0 - 9 46 35 13 33 47 70 135 -32 - 9 35 10 - 9 58 1 - 9 9 19 -10 23 48 98 0 0 -10 8 44 13 33 18 71 136 -32 - 9 57 19 -10 20 7 - 9 31 32 -10 45 52 99 0 0 -10 30 32 13 32 49 72 137 -33 -10 19 9 -10 41 54 - 9 53 24 -11 7 36 100 0 0 -10 51 59 13 32 21 73 138 -34 -10 40 38 -11 3 21 -10 14 56 -11 28 59 101 0 0 -11 13 7 13 31 52 73 139 -35 -11 1 46 -11 24 27 -10 36 7 -11 50 3 102 0 0 -11 33 54 13 31 23 74 140 -36 -11 22 34 -11 45 13 -10 56 58 -12 10 46 103 0 0 -11 54 20 13 30 54 75 142 -37 -11 43 2 -12 5 38 -11 17 28 -12 31 8 104 0 0 -12 14 25 13 30 25 76 143 -38 -12 3 9 -12 25 42 -11 37 38 -12 51 9 105 0 0 -12 34 10 13 29 56 77 145 -38 -12 22 54 -12 45 25 -11 57 26 -13 10 50 106 0 0 -12 53 33 13 29 27 77 147 -39 -12 42 19 -13 4 47 -12 16 54 -13 30 10 107 0 0 -13 12 36 13 28 58 78 150 -40 -13 1 23 -13 23 49 -12 36 0 -13 49 8 108 0 0 -13 31 17 13 28 29 79 152 -41 -13 20 5 -13 42 29 -12 54 45 -14 7 45 109 0 0 -13 49 37 13 28 0 79 155 -42 -13 38 26 -14 0 47 -13 13 9 -14 26 1 110 0 0 -14 7 35 13 27 31 80 159 -42 -13 56 25 -14 18 44 -13 31 11 -14 43 56 111 0 0 -14 25 12 13 27 2 80 163 -43 -14 14 3 -14 36 20 -13 48 51 -15 1 29 112 0 0 -14 42 27 13 26 33 81 167 -44 -14 31 20 -14 53 34 -14 6 10 -15 18 41 113 0 0 -14 59 21 13 26 5 81 172 -45 -14 48 14 -15 10 26 -14 23 7 -15 35 30 114 0 0 -15 15 52 13 25 36 82 177 -46 -15 4 47 -15 26 57 -14 39 43 -15 51 59 115 0 0 -15 32 2 13 25 7 82 183 -46 -15 20 58 -15 43 6 -14 55 56 -16 8 5 116 0 0 -15 47 50 13 24 39 82 189 -47 -15 36 47 -15 58 53 -15 11 48 -16 23 49 117 0 0 -16 3 16 13 24 10 82 196 -48 -15 52 14 -16 14 18 -15 27 17 -16 39 12 118 0 0 -16 18 20 13 23 42 82 202 -49 -16 7 19 -16 29 21 -15 42 24 -16 54 13 119 0 0 -16 33 2 13 23 13 82 208 -50 -16 22 2 -16 44 2 -15 57 10 -17 8 52 120 0 0 -16 47 22 13 22 45 82 214 -50 -16 36 23 -16 58 21 -16 11 33 -17 23 8 121 0 0 -17 1 20 13 22 17 81 219 -51 -16 50 22 -17 12 17 -16 25 34 -17 37 3 122 0 0 -17 14 55 13 21 49 81 224 -52 -17 3 58 -17 25 52 -16 39 12 -17 50 35 123 0 0 -17 28 9 13 21 21 81 228 -53 -17 17 12 -17 39 4 -16 52 29 -18 3 45 124 0 0 -17 41 0 13 20 53 80 232 -53 -17 30 4 -17 51 54 -17 5 23 -18 16 33 125 0 0 -17 53 28 13 20 25 80 236 -54 -17 42 34 -18 4 22 -17 17 54 -18 28 59 126 0 0 -18 5 35 13 19 58 79 239 -55 -17 54 41 -18 16 28 -17 30 3 -18 41 3 127 0 0 -18 17 19 13 19 30 78 241 -56 -18 6 26 -18 28 11 -17 41 50 -18 52 44 128 0 0 -18 28 40 13 19 3 78 244 -56 -18 17 48 -18 39 32 -17 53 14 -19 4 3 129 0 0 -18 39 39 13 18 36 77 246 -57 -18 28 48 -18 50 30 -18 4 16 -19 14 59 130 0 0 -18 50 16 13 18 9 76 248 -58 -18 39 26 -19 1 6 -18 14 55 -19 25 34 131 0 0 -19 0 30 13 17 42 76 249 -59 -18 49 41 -19 11 19 -18 25 12 -19 35 45 132 0 0 -19 10 22 13 17 15 75 251 -59 -18 59 33 -19 21 10 -18 35 6 -19 45 35 133 0 0 -19 19 51 13 16 48 74 252 -60 -19 9 3 -19 30 39 -18 44 37 -19 55 2 134 0 0 -19 28 57 13 16 22 73 253 -61 -19 18 10 -19 39 44 -18 53 46 -20 4 6 135 0 0 -19 37 41 13 15 55 73 254 -61 -19 26 55 -19 48 28 -19 2 32 -20 12 48 136 0 0 -19 46 3 13 15 29 72 255 -62 -19 35 17 -19 56 48 -19 10 55 -20 21 7 137 0 0 -19 54 1 13 15 3 71 255 -63 -19 43 16 -20 4 47 -19 18 56 -20 29 4 138 0 0 -20 1 37 13 14 37 70 256 -63 -19 50 52 -20 12 22 -19 26 34 -20 36 38 139 0 0 -20 8 51 13 14 11 69 257 -64 -19 58 6 -20 19 35 -19 33 49 -20 43 49 140 0 0 -20 15 41 13 13 45 69 257 -65 -20 4 57 -20 26 25 -19 40 41 -20 50 38 141 0 0 -20 22 9 13 13 20 68 258 -65 -20 11 25 -20 32 52 -19 47 10 -20 57 4 142 0 0 -20 28 14 13 12 54 67 258 -66 -20 17 31 -20 38 56 -19 53 17 -21 3 8 143 0 0 -20 33 56 13 12 29 66 258 -66 -20 23 13 -20 44 38 -19 59 0 -21 8 49 144 0 0 -20 39 15 13 12 4 66 258 -67 -20 28 33 -20 49 57 -20 4 21 -21 14 6 145 0 0 -20 44 11 13 11 39 65 259 -68 -20 33 30 -20 54 53 -20 9 18 -21 19 2 146 0 0 -20 48 45 13 11 15 64 259 -68 -20 38 3 -20 59 26 -20 13 53 -21 23 34 147 0 0 -20 52 55 13 10 50 63 259 -69 -20 42 14 -21 3 36 -20 18 4 -21 27 43 148 0 0 -20 56 43 13 10 26 62 259 -69 -20 46 2 -21 7 23 -20 21 53 -21 31 30 149 0 0 -21 0 7 13 10 2 61 259 -70 -20 49 26 -21 10 47 -20 25 18 -21 34 53 150 0 0 -21 3 8 13 9 38 61 259 -70 -20 52 28 -21 13 48 -20 28 20 -21 37 54 151 0 0 -21 5 46 13 9 14 60 259 -71 -20 55 6 -21 16 26 -20 30 58 -21 40 31 152 0 0 -21 8 1 13 8 51 59 259 -71 -20 57 21 -21 18 41 -20 33 14 -21 42 46 153 0 0 -21 9 53 13 8 27 58 259 -71 -20 59 13 -21 20 32 -20 35 6 -21 44 37 154 0 0 -21 11 21 13 8 4 57 259 -72 -21 0 41 -21 22 1 -20 36 34 -21 46 5 155 0 0 -21 12 26 13 7 41 57 259 -72 -21 1 46 -21 23 5 -20 37 39 -21 47 10 156 0 0 -21 13 7 13 7 19 56 259 -72 -21 2 28 -21 23 47 -20 38 21 -21 47 51 157 0 0 -21 13 25 13 6 56 55 259 -73 -21 2 46 -21 24 5 -20 38 39 -21 48 9 158 0 0 -21 13 20 13 6 34 54 259 -73 -21 2 40 -21 23 59 -20 38 33 -21 48 4 159 0 0 -21 12 51 13 6 11 53 259 -73 -21 2 11 -21 23 30 -20 38 4 -21 47 35 160 0 0 -21 11 58 13 5 50 52 259 -73 -21 1 18 -21 22 38 -20 37 10 -21 46 42 161 0 0 -21 10 41 13 5 28 52 259 -74 -21 0 1 -21 21 21 -20 35 53 -21 45 26 162 0 0 -21 9 1 13 5 6 51 258 -74 -20 58 21 -21 19 41 -20 34 12 -21 43 47 163 0 0 -21 6 57 13 4 45 50 258 -74 -20 56 16 -21 17 37 -20 32 7 -21 41 43 164 0 0 -21 4 28 13 4 24 49 258 -74 -20 53 47 -21 15 9 -20 29 38 -21 39 15 165 0 0 -21 1 36 13 4 3 48 258 -74 -20 50 55 -21 12 17 -20 26 44 -21 36 24 166 0 0 -20 58 19 13 3 43 47 258 -74 -20 47 38 -21 9 0 -20 23 27 -21 33 8 167 0 0 -20 54 38 13 3 22 47 257 -74 -20 43 56 -21 5 20 -20 19 45 -21 29 29 168 0 0 -20 50 33 13 3 2 46 257 -73 -20 39 51 -21 1 15 -20 15 38 -21 25 25 169 0 0 -20 46 3 13 2 42 45 257 -73 -20 35 21 -20 56 46 -20 11 7 -21 20 56 170 0 0 -20 41 9 13 2 23 44 257 -73 -20 30 26 -20 51 52 -20 6 11 -21 16 4 171 0 0 -20 35 50 13 2 4 43 257 -73 -20 25 6 -20 46 33 -20 0 51 -21 10 46 172 0 0 -20 30 6 13 1 44 42 256 -72 -20 19 22 -20 40 50 -19 55 5 -21 5 4 173 0 0 -20 23 58 13 1 26 41 256 -72 -20 13 13 -20 34 42 -19 48 55 -20 58 58 174 0 0 -20 17 24 13 1 7 41 256 -72 -20 6 39 -20 28 9 -19 42 19 -20 52 26 175 0 0 -20 10 26 13 0 49 40 256 -71 -19 59 40 -20 21 11 -19 35 18 -20 45 30 176 0 0 -20 3 2 13 0 31 39 256 -71 -19 52 15 -20 13 48 -19 27 52 -20 38 8 177 0 0 -19 55 13 13 0 13 38 255 -70 -19 44 25 -20 6 0 -19 20 0 -20 30 21 178 0 0 -19 46 58 12 59 56 37 255 -70 -19 36 10 -19 57 46 -19 11 43 -20 22 9 179 0 0 -19 38 18 12 59 39 36 255 -69 -19 27 28 -19 49 6 -19 3 0 -20 13 31 180 0 0 -19 29 12 12 59 22 35 255 -69 -19 18 22 -19 40 1 -18 53 52 -20 4 28 -179 0 0 -19 19 40 12 59 5 34 254 -68 -19 8 49 -19 30 30 -18 44 17 -19 54 59 -178 0 0 -19 9 42 12 58 49 33 254 -68 -18 58 50 -19 20 34 -18 34 16 -19 45 5 -177 0 0 -18 59 18 12 58 33 33 254 -67 -18 48 25 -19 10 11 -18 23 49 -19 34 44 -176 0 0 -18 48 28 12 58 17 32 254 -66 -18 37 34 -18 59 21 -18 12 56 -19 23 57 -175 0 0 -18 37 12 12 58 2 31 253 -66 -18 26 17 -18 48 6 -18 1 36 -19 12 44 -174 0 0 -18 25 29 12 57 47 30 253 -65 -18 14 33 -18 36 24 -17 49 49 -19 1 4 -173 0 0 -18 13 19 12 57 33 29 253 -65 -18 2 22 -18 24 16 -17 37 36 -18 48 58 -172 0 0 -18 0 43 12 57 18 28 253 -64 -17 49 44 -18 11 40 -17 24 56 -18 36 26 -171 0 0 -17 47 39 12 57 5 27 252 -63 -17 36 40 -17 58 38 -17 11 48 -18 23 26 -170 0 0 -17 34 9 12 56 51 26 252 -62 -17 23 8 -17 45 9 -16 58 14 -18 10 0 -169 0 0 -17 20 11 12 56 38 25 252 -62 -17 9 9 -17 31 13 -16 44 12 -17 56 6 -168 0 0 -17 5 46 12 56 25 24 252 -61 -16 54 43 -17 16 49 -16 29 43 -17 41 46 -167 0 0 -16 50 54 12 56 13 23 251 -60 -16 39 50 -17 1 58 -16 14 46 -17 26 58 -166 0 0 -16 35 34 12 56 1 22 251 -59 -16 24 28 -16 46 40 -15 59 22 -17 11 42 -165 0 0 -16 19 46 12 55 49 21 251 -59 -16 8 39 -16 30 53 -15 43 29 -16 55 59 -164 0 0 -16 3 31 12 55 38 21 251 -58 -15 52 22 -16 14 39 -15 27 9 -16 39 49 -163 0 0 -15 46 47 12 55 28 20 250 -57 -15 35 37 -15 57 57 -15 10 21 -16 23 10 -162 0 0 -15 29 36 12 55 17 19 250 -56 -15 18 24 -15 40 47 -14 53 4 -16 6 3 -161 0 0 -15 11 56 12 55 8 18 250 -55 -15 0 43 -15 23 9 -14 35 19 -15 48 29 -160 0 0 -14 53 48 12 54 58 17 250 -55 -14 42 33 -15 5 3 -14 17 6 -15 30 26 -159 0 0 -14 35 11 12 54 49 16 249 -54 -14 23 55 -14 46 28 -13 58 24 -15 11 55 -158 0 0 -14 16 6 12 54 41 15 249 -53 -14 4 48 -14 27 24 -13 39 13 -14 52 55 -157 0 0 -13 56 33 12 54 33 14 249 -52 -13 45 13 -14 7 52 -13 19 34 -14 33 27 -156 0 0 -13 36 30 12 54 26 13 249 -51 -13 25 8 -13 47 52 -12 59 26 -14 13 30 -155 0 0 -13 15 59 12 54 19 12 248 -50 -13 4 36 -13 27 22 -12 38 49 -13 53 5 -154 0 0 -12 54 59 12 54 12 11 248 -49 -12 43 34 -13 6 24 -12 17 43 -13 32 11 -153 0 0 -12 33 30 12 54 6 10 248 -49 -12 22 3 -12 44 57 -11 56 8 -13 10 48 -152 0 0 -12 11 33 12 54 1 9 248 -48 -12 0 3 -12 23 1 -11 34 4 -12 48 56 -151 0 0 -11 49 6 12 53 56 8 248 -47 -11 37 35 -12 0 36 -11 11 31 -12 26 35 -150 0 0 -11 26 10 12 53 52 7 247 -46 -11 14 37 -11 37 43 -10 48 30 -12 3 46 -149 0 0 -11 2 46 12 53 49 6 247 -45 -10 51 11 -11 14 20 -10 24 59 -11 40 28 -148 0 0 -10 38 52 12 53 46 5 247 -44 -10 27 15 -10 50 29 -10 0 59 -11 16 41 -147 0 0 -10 14 30 12 53 43 3 247 -43 -10 2 51 -10 26 8 - 9 36 30 -10 52 25 -146 0 0 - 9 49 38 12 53 41 2 247 -42 - 9 37 58 -10 1 19 - 9 11 32 -10 27 40 -145 0 0 - 9 24 19 12 53 40 1 247 -41 - 9 12 36 - 9 36 1 - 8 46 5 -10 2 26 -144 0 0 - 8 58 30 12 53 40 0 246 -40 - 8 46 45 - 9 10 14 .. .. .. - 9 36 44 Uncertainty in time = +/- 13 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: TYC 6906-01035-1 * constellation : Capricornus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 20 21 26.1805 DE: -23 24 59.531 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .024, .033 ) * V mag [mag]: 11.8 * B mag [mag]: 12.3 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (302) Clarissa approx. diameter [km]: 39 approx. diameter ["]: .033 distance from Earth [AU]: 1.62500 * orbital information: orbit source: Preston date of fit: 2008 Mar 20 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 936 number of rejected observations: 59 time covered by the observations: 1905 Oct 25 - 2008 Feb 11 1 sigma uncertainty ellipse (major, minor, PA): 0.026, 0.018, 76° remarks: * orbital elements for (302) Clarissa : Mean anomaly = 269.91592127 deg Arg. of pericenter = 54.14372038 deg Long. of node = 7.91443523 deg Inclination = 3.41271145 deg Eccentricity = 0.11136529 Semimajor axis = 2.40701704 AU Perihelion dist = 2.13895889 AU Mag: H = 11.01, G = 0.15 Epoch of elements : MJD 55084.55800000 TDT (2009 Sep 10.558) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Sep 10 302 Clarissa 13h 24.1m UT 11.8 20 21 26.181-23 24 59.53TYC 6906-01035-1 12.3 14.8 39 11.1 1.625 -0.730 3.16 114.6169 -23.417 -21.80 4.75 13.4019 0.03937 0.12849 -1.86307 0.58249 0.00376 0.00115 2000 268.7129382009 9 6.00000 54.143720 7.914435 3.4127110.11136529 2.4070170 2.138958910.9 5.00.15 RATE 2.6392790 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.037 0.035 357 2.13 0.037 0 54545.5020090910_1035-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 13:08 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org