IOTA/IOTA-ES occultation update for (772) Tanete / 2UCAC 44480850 event on 2007 Sep 01, 21:04 UT Visible from Australia Summary ------- On 2007 Sep 01 UT, the 118 km diameter asteroid (772) Tanete will occult a 11.9 mag star in the constellation Lynx for observers along a path across Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.5 mag to 14.3 mag (the magnitude of the asteroid) for at most 3.0 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: 92 * date and approx. time of event: 2007 Sep 01, 21:02 - 2007 Sep 01, 21:06 UT * magnitude of target star: 11.9 * magnitude drop [mag]: 2.5 * estimated maximum duration [s]: 3.0 * Moon: 75 % sunlit, 77° distance * Sun: 45° distance * rough path description: Australia Additional comments ------------------- low altitude The occultation path -------------------- * approximate projected width [km]: 148 * 1 sigma uncertainty interval [path widths]: +/- 0.49 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .028 +/- .022) * 1 sigma uncertainty ellipse (major, minor, PA): ( .028", .022", 89° ) * approx speed of asteroid's shadow [km/s]: 39.1365 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of 2UCAC 44480850 by 772 Tanete on 2007 Sep 01 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 122 0 0 .. .. .. .. .. .. .. .. .. .. .. .. -31 0 16 .. .. .. .. .. .. 123 0 0 -31 6 1 21 2 37 1 46 -14 -32 1 30 -30 11 27 .. .. .. .. .. .. 124 0 0 -30 17 6 21 2 37 2 46 -13 -31 12 14 -29 22 52 -32 7 11 .. .. .. 125 0 0 -29 28 26 21 2 37 3 45 -12 -30 23 13 -28 34 32 -31 17 48 .. .. .. 126 0 0 -28 40 3 21 2 38 4 45 -11 -29 34 28 -27 46 29 -30 28 41 .. .. .. 127 0 0 -27 51 59 21 2 38 5 44 -10 -28 46 3 -26 58 46 -29 39 54 -26 7 22 128 0 0 -27 4 17 21 2 39 7 44 -9 -27 57 59 -26 11 24 -28 51 27 -25 20 20 129 0 0 -26 16 58 21 2 39 8 43 -8 -27 10 18 -25 24 26 -28 3 24 -24 33 41 130 0 0 -25 30 4 21 2 40 9 43 -7 -26 23 2 -24 37 53 -27 15 46 -23 47 28 131 0 0 -24 43 38 21 2 40 10 42 -6 -25 36 14 -23 51 48 -26 28 35 -23 1 42 132 0 0 -23 57 41 21 2 41 11 42 -5 -24 49 55 -23 6 12 -25 41 53 -22 16 26 133 0 0 -23 12 14 21 2 42 13 41 -4 -24 4 7 -22 21 6 -24 55 42 -21 31 41 134 0 0 -22 27 20 21 2 43 14 41 -3 -23 18 51 -21 36 34 -24 10 4 -20 47 28 135 0 0 -21 43 1 21 2 44 15 41 -2 -22 34 9 -20 52 35 -23 25 0 -20 3 48 136 0 0 -20 59 16 21 2 45 16 40 -1 -21 50 3 -20 9 11 -22 40 32 -19 20 45 137 0 0 -20 16 9 21 2 46 17 40 0 -21 6 34 -19 26 25 -21 56 41 -18 38 17 138 0 0 -19 33 40 21 2 48 18 39 1 -20 23 44 -18 44 16 -21 13 29 -17 56 28 139 0 0 -18 51 50 21 2 49 19 39 2 -19 41 33 -18 2 46 -20 30 56 -17 15 18 140 0 0 -18 10 41 21 2 50 21 38 3 -19 0 3 -17 21 57 -19 49 5 -16 34 47 141 0 0 -17 30 13 21 2 52 22 38 4 -18 19 14 -16 41 49 -19 7 55 -15 54 58 142 0 0 -16 50 28 21 2 53 23 37 5 -17 39 9 -16 2 24 -18 27 29 -15 15 51 143 0 0 -16 11 26 21 2 55 24 37 6 -16 59 47 -15 23 41 -17 47 46 -14 37 27 144 0 0 -15 33 8 21 2 57 25 37 7 -16 21 9 -14 45 43 -17 8 49 -13 59 47 145 0 0 -14 55 36 21 2 59 26 36 8 -15 43 17 -14 8 29 -16 30 37 -13 22 50 146 0 0 -14 18 49 21 3 0 27 36 9 -15 6 11 -13 32 0 -15 53 12 -12 46 39 147 0 0 -13 42 48 21 3 2 28 35 10 -14 29 52 -12 56 18 -15 16 33 -12 11 14 148 0 0 -13 7 34 21 3 4 29 35 11 -13 54 20 -12 21 22 -14 40 42 -11 36 35 149 0 0 -12 33 8 21 3 6 30 34 12 -13 19 35 -11 47 13 -14 5 40 -11 2 42 150 0 0 -11 59 29 21 3 8 31 34 14 -12 45 39 -11 13 51 -13 31 26 -10 29 37 151 0 0 -11 26 39 21 3 10 32 33 15 -12 12 31 -10 41 17 -12 58 0 - 9 57 19 152 0 0 -10 54 37 21 3 13 33 33 16 -11 40 13 -10 9 32 -12 25 25 - 9 25 48 153 0 0 -10 23 24 21 3 15 34 32 17 -11 8 43 - 9 38 34 -11 53 39 - 8 55 6 154 0 0 - 9 53 0 21 3 17 35 31 18 -10 38 3 - 9 8 26 -11 22 42 - 8 25 12 155 0 0 - 9 23 25 21 3 19 36 31 19 -10 8 13 - 8 39 6 -10 52 36 - 7 56 7 156 0 0 - 8 54 40 21 3 22 37 30 20 - 9 39 13 - 8 10 36 -10 23 21 - 7 27 50 157 0 0 - 8 26 44 21 3 24 38 30 21 - 9 11 2 - 7 42 54 - 9 54 56 - 7 0 23 158 0 0 - 7 59 39 21 3 26 39 29 22 - 8 43 42 - 7 16 2 - 9 27 21 - 6 33 44 159 0 0 - 7 33 23 21 3 29 40 28 23 - 8 17 12 - 6 50 0 - 9 0 37 - 6 7 54 160 0 0 - 7 7 56 21 3 31 40 28 24 - 7 51 33 - 6 24 47 - 8 34 44 - 5 42 53 161 0 0 - 6 43 20 21 3 34 41 27 25 - 7 26 44 - 6 0 23 - 8 9 42 - 5 18 42 162 0 0 - 6 19 34 21 3 37 42 26 26 - 7 2 45 - 5 36 49 - 7 45 30 - 4 55 19 163 0 0 - 5 56 38 21 3 39 43 25 27 - 6 39 37 - 5 14 4 - 7 22 10 - 4 32 46 164 0 0 - 5 34 31 21 3 42 44 24 29 - 6 17 18 - 4 52 9 - 6 59 40 - 4 11 1 165 0 0 - 5 13 15 21 3 44 44 24 30 - 5 55 51 - 4 31 3 - 6 38 1 - 3 50 6 166 0 0 - 4 52 48 21 3 47 45 23 31 - 5 35 13 - 4 10 47 - 6 17 12 - 3 30 0 167 0 0 - 4 33 11 21 3 50 46 22 32 - 5 15 26 - 3 51 20 - 5 57 14 - 3 10 42 168 0 0 - 4 14 23 21 3 52 46 21 33 - 4 56 28 - 3 32 42 - 5 38 7 - 2 52 14 169 0 0 - 3 56 25 21 3 55 47 20 34 - 4 38 21 - 3 14 54 - 5 19 50 - 2 34 34 170 0 0 - 3 39 17 21 3 58 48 19 35 - 4 21 3 - 2 57 54 - 5 2 24 - 2 17 43 171 0 0 - 3 22 58 21 4 1 48 18 36 - 4 4 36 - 2 41 43 - 4 45 47 - 2 1 40 172 0 0 - 3 7 28 21 4 3 49 17 37 - 3 48 58 - 2 26 22 - 4 30 1 - 1 46 26 173 0 0 - 2 52 48 21 4 6 49 16 38 - 3 34 10 - 2 11 49 - 4 15 5 - 1 32 0 174 0 0 - 2 38 56 21 4 9 50 15 39 - 3 20 11 - 1 58 4 - 4 0 59 - 1 18 22 175 0 0 - 2 25 54 21 4 12 50 13 40 - 3 7 2 - 1 45 8 - 3 47 43 - 1 5 33 176 0 0 - 2 13 40 21 4 15 51 12 41 - 2 54 42 - 1 33 1 - 3 35 16 - 0 53 32 177 0 0 - 2 2 15 21 4 18 51 11 42 - 2 43 11 - 1 21 42 - 3 23 39 - 0 42 18 178 0 0 - 1 51 39 21 4 20 51 10 43 - 2 32 29 - 1 11 11 - 3 12 52 - 0 31 53 179 0 0 - 1 41 52 21 4 23 52 9 44 - 2 22 36 - 1 1 29 - 3 2 54 - 0 22 15 180 0 0 - 1 32 53 21 4 26 52 7 45 - 2 13 32 - 0 52 34 - 2 53 46 - 0 13 25 -179 0 0 - 1 24 42 21 4 29 52 6 46 - 2 5 17 - 0 44 28 - 2 45 26 - 0 5 22 -178 0 0 - 1 17 19 21 4 32 52 5 47 - 1 57 51 - 0 37 9 - 2 37 56 0 1 53 -177 0 0 - 1 10 45 21 4 35 53 3 48 - 1 51 14 - 0 30 38 - 2 31 15 0 8 20 -176 0 0 - 1 4 59 21 4 38 53 2 49 - 1 45 25 - 0 24 55 - 2 25 23 0 14 0 -175 0 0 - 1 0 1 21 4 40 53 1 50 - 1 40 24 - 0 20 0 - 2 20 20 0 18 53 -174 0 0 - 0 55 52 21 4 43 53 359 51 - 1 36 12 - 0 15 52 - 2 16 5 0 22 59 -173 0 0 - 0 52 30 21 4 46 53 358 52 - 1 32 48 - 0 12 32 - 2 12 40 0 26 17 -172 0 0 - 0 49 56 21 4 49 53 357 53 - 1 30 13 - 0 10 0 - 2 10 4 0 28 49 -171 0 0 - 0 48 10 21 4 52 53 355 54 - 1 28 26 - 0 8 15 - 2 8 16 0 30 33 -170 0 0 - 0 47 12 21 4 55 53 354 55 - 1 27 28 - 0 7 18 - 2 7 17 0 31 30 -169 0 0 - 0 47 2 21 4 58 53 353 56 - 1 27 18 - 0 7 8 - 2 7 7 0 31 39 -168 0 0 - 0 47 40 21 5 1 53 351 57 - 1 27 56 - 0 7 45 - 2 7 45 0 31 2 -167 0 0 - 0 49 6 21 5 3 52 350 58 - 1 29 23 - 0 9 10 - 2 9 12 0 29 38 -166 0 0 - 0 51 19 21 5 6 52 349 59 - 1 31 37 - 0 11 23 - 2 11 28 0 27 26 -165 0 0 - 0 54 21 21 5 9 52 347 60 - 1 34 41 - 0 14 23 - 2 14 33 0 24 28 -164 0 0 - 0 58 11 21 5 12 52 346 61 - 1 38 32 - 0 18 11 - 2 18 27 0 20 42 -163 0 0 - 1 2 48 21 5 15 51 345 62 - 1 43 12 - 0 22 46 - 2 23 9 0 16 9 -162 0 0 - 1 8 14 21 5 18 51 344 63 - 1 48 41 - 0 28 9 - 2 28 40 0 10 49 -161 0 0 - 1 14 28 21 5 20 51 342 64 - 1 54 58 - 0 34 19 - 2 35 1 0 4 41 -160 0 0 - 1 21 30 21 5 23 50 341 65 - 2 2 3 - 0 41 18 - 2 42 10 - 0 2 14 -159 0 0 - 1 29 20 21 5 26 50 340 65 - 2 9 58 - 0 49 4 - 2 50 8 - 0 9 56 -158 0 0 - 1 37 58 21 5 29 49 339 66 - 2 18 41 - 0 57 38 - 2 58 56 - 0 18 26 -157 0 0 - 1 47 25 21 5 32 49 338 67 - 2 28 12 - 1 7 0 - 3 8 33 - 0 27 44 -156 0 0 - 1 57 41 21 5 34 48 337 68 - 2 38 33 - 1 17 10 - 3 18 59 - 0 37 49 -155 0 0 - 2 8 44 21 5 37 48 336 69 - 2 49 43 - 1 28 8 - 3 30 14 - 0 48 42 -154 0 0 - 2 20 37 21 5 40 47 335 70 - 3 1 41 - 1 39 55 - 3 42 19 - 1 0 22 -153 0 0 - 2 33 18 21 5 42 46 334 70 - 3 14 29 - 1 52 30 - 3 55 14 - 1 12 51 -152 0 0 - 2 46 48 21 5 45 46 333 71 - 3 28 6 - 2 5 53 - 4 8 58 - 1 26 8 -151 0 0 - 3 1 7 21 5 48 45 333 72 - 3 42 33 - 2 20 4 - 4 23 32 - 1 40 12 -150 0 0 - 3 16 15 21 5 50 44 332 72 - 3 57 49 - 2 35 5 - 4 38 56 - 1 55 5 -149 0 0 - 3 32 12 21 5 53 44 331 73 - 4 13 54 - 2 50 54 - 4 55 10 - 2 10 47 -148 0 0 - 3 48 59 21 5 55 43 330 73 - 4 30 50 - 3 7 32 - 5 12 14 - 2 27 16 -147 0 0 - 4 6 35 21 5 58 42 329 74 - 4 48 35 - 3 24 58 - 5 30 8 - 2 44 34 -146 0 0 - 4 25 0 21 6 0 41 329 74 - 5 7 9 - 3 43 14 - 5 48 53 - 3 2 41 -145 0 0 - 4 44 14 21 6 3 41 328 75 - 5 26 34 - 4 2 19 - 6 8 28 - 3 21 37 -144 0 0 - 5 4 18 21 6 5 40 327 75 - 5 46 49 - 4 22 13 - 6 28 53 - 3 41 21 -143 0 0 - 5 25 12 21 6 8 39 327 75 - 6 7 53 - 4 42 56 - 6 50 9 - 4 1 54 -142 0 0 - 5 46 56 21 6 10 38 326 75 - 6 29 48 - 5 4 28 - 7 12 15 - 4 23 16 -141 0 0 - 6 9 29 21 6 12 37 326 75 - 6 52 33 - 5 26 50 - 7 35 12 - 4 45 26 -140 0 0 - 6 32 52 21 6 15 36 325 75 - 7 16 9 - 5 50 1 - 7 59 0 - 5 8 26 -139 0 0 - 6 57 4 21 6 17 35 324 75 - 7 40 34 - 6 14 1 - 8 23 38 - 5 32 15 -138 0 0 - 7 22 7 21 6 19 34 324 74 - 8 5 49 - 6 38 51 - 8 49 7 - 5 56 52 -137 0 0 - 7 47 59 21 6 21 34 323 74 - 8 31 55 - 7 4 30 - 9 15 26 - 6 22 18 -136 0 0 - 8 14 41 21 6 23 33 323 74 - 8 58 51 - 7 30 58 - 9 42 36 - 6 48 34 -135 0 0 - 8 42 12 21 6 25 32 322 73 - 9 26 37 - 7 58 16 -10 10 37 - 7 15 38 -134 0 0 - 9 10 33 21 6 28 31 322 72 - 9 55 12 - 8 26 22 -10 39 27 - 7 43 31 -133 0 0 - 9 39 43 21 6 29 30 322 72 -10 24 38 - 8 55 17 -11 9 8 - 8 12 12 -132 0 0 -10 9 42 21 6 31 29 321 71 -10 54 53 - 9 25 2 -11 39 39 - 8 41 42 -131 0 0 -10 40 31 21 6 33 28 321 70 -11 25 57 - 9 55 34 -12 11 0 - 9 11 59 -130 0 0 -11 12 8 21 6 35 27 320 70 -11 57 51 -10 26 55 -12 43 11 - 9 43 5 -129 0 0 -11 44 33 21 6 37 26 320 69 -12 30 33 -10 59 5 -13 16 10 -10 14 59 -128 0 0 -12 17 47 21 6 39 24 320 68 -13 4 4 -11 32 1 -13 49 59 -10 47 40 -127 0 0 -12 51 49 21 6 40 23 319 67 -13 38 24 -12 5 46 -14 24 36 -11 21 8 -126 0 0 -13 26 37 21 6 42 22 319 66 -14 13 30 -12 40 17 -15 0 1 -11 55 23 -125 0 0 -14 2 13 21 6 43 21 318 65 -14 49 25 -13 15 35 -15 36 14 -12 30 24 -124 0 0 -14 38 35 21 6 45 20 318 64 -15 26 5 -13 51 39 -16 13 14 -13 6 10 -123 0 0 -15 15 42 21 6 46 19 318 63 -16 3 32 -14 28 28 -16 51 0 -13 42 42 -122 0 0 -15 53 35 21 6 47 18 317 62 -16 41 44 -15 6 2 -17 29 32 -14 19 58 -121 0 0 -16 32 12 21 6 49 17 317 61 -17 20 41 -15 44 20 -18 8 49 -14 57 58 -120 0 0 -17 11 33 21 6 50 16 317 60 -18 0 22 -16 23 21 -18 48 51 -15 36 41 -119 0 0 -17 51 36 21 6 51 14 316 59 -18 40 46 -17 3 5 -19 29 35 -16 16 6 -118 0 0 -18 32 22 21 6 52 13 316 58 -19 21 52 -17 43 30 -20 11 2 -16 56 13 -117 0 0 -19 13 48 21 6 53 12 315 56 -20 3 39 -18 24 36 -20 53 11 -17 36 59 -116 0 0 -19 55 53 21 6 54 11 315 55 -20 46 6 -19 6 21 -21 35 59 -18 18 26 -115 0 0 -20 38 37 21 6 54 10 315 54 -21 29 11 -19 48 45 -22 19 27 -19 0 30 -114 0 0 -21 21 59 21 6 55 9 314 53 -22 12 54 -20 31 46 -23 3 32 -19 43 12 -113 0 0 -22 5 57 21 6 56 8 314 52 -22 57 14 -21 15 23 -23 48 13 -20 26 29 -112 0 0 -22 50 29 21 6 56 6 314 51 -23 42 7 -21 59 34 -24 33 29 -21 10 20 -111 0 0 -23 35 34 21 6 56 5 313 50 -24 27 35 -22 44 18 -25 19 19 -21 54 45 -110 0 0 -24 21 11 21 6 57 4 313 48 -25 13 33 -23 29 34 -26 5 40 .. .. .. -109 0 0 -25 7 17 21 6 57 3 312 47 -26 0 2 -24 15 19 -26 52 31 .. .. .. -108 0 0 -25 53 52 21 6 57 2 312 46 -26 46 58 -25 1 33 -27 39 50 .. .. .. -107 0 0 -26 40 53 21 6 57 0 311 45 .. .. .. .. .. .. .. .. .. .. .. .. Data for the target star ------------------------ * name: 2UCAC 44480850 * constellation : Lynx * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 08 08 43.4616 DE: +36 06 43.472 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .024, .019 ) * V mag [mag]: 11.9 * B mag [mag]: 0.0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (772) Tanete approx. diameter [km]: 118 approx. diameter ["]: .044 distance from Earth [AU]: 3.65900 * orbital information: orbit source: Preston date of fit: 2007 Aug 28 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 625 number of rejected observations: 60 time covered by the observations: 1915 Apr 20 - 2007 Mar 20 1 sigma uncertainty ellipse (major, minor, PA): 0.014, 0.010, 85° remarks: * orbital elements for (772) Tanete : Mean anomaly = 270.73500523 deg Arg. of pericenter = 142.21376325 deg Long. of node = 64.04383846 deg Inclination = 28.78265512 deg Eccentricity = 0.09192833 Semimajor axis = 3.00320529 AU Perihelion dist = 2.72712564 AU Mag: H = 8.36, G = 0.15 Epoch of elements : MJD 54344.87800000 TDT (2007 Sep 01.878) ------ occelmnt file for Occult BEGIN ----------------------------------- 2007 Sep 01 772 Tanete 21h 4.8m UT 11.9 8 8 43.462 36 6 43.472UCAC 44480850 0.0 14.3 118 3.0 3.659 4.375 2.89 -174.662 36.111 -136.20 8.18 21.0798 .03312 -.60070 22.05698 1.20290 -0.00346 0.00194 2000 269.8112252007 828.00000142.213763 64.043838 28.7826550.091928333.003205292.727125648.335 0.15 RATE 1.8937670 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.028 0.022 88.8 1.490 0.022 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2007 Aug 28, 23:07 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org