IOTA/IOTA-ES occultation update for (7) Iris / TYC 5528-01159-1 event on 2007 Dec 04, 08:13 UT Visible from Argentina, Chile Summary ------- On 2007 Dec 04 UT, the 200 km diameter asteroid (7) Iris will occult a 10.4 mag star in the constellation Virgo for observers along a path across Argentina, Chile. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.1 mag to 11.0 mag (the magnitude of the asteroid) for at most 6.5 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: 99 * date and approx. time of event: 2007 Dec 04, 08:10 - 2007 Dec 04, 08:15 UT * magnitude of target star: 10.4 * magnitude drop [mag]: 1.1 * estimated maximum duration [s]: 6.5 * Moon: 24 % sunlit, 2° distance * Sun: 58° distance * rough path description: Argentina, Chile The occultation path -------------------- * approximate projected width [km]: 272 * 1 sigma uncertainty interval [path widths]: +/- 0.25 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .020 +/- .023) * 1 sigma uncertainty ellipse (major, minor, PA): ( .023", .020", 1° ) * approx speed of asteroid's shadow [km/s]: 30.6572 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5528-01159-1 by 7 Iris on 2007 Dec 04 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 - 98 0 0 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. -18 7 45 .. .. .. - 97 0 0 -16 23 59 8 10 39 1 100 -43 -17 39 57 .. .. .. -18 18 33 .. .. .. - 96 0 0 -16 35 11 8 10 39 2 100 -42 -17 51 19 .. .. .. -18 30 1 .. .. .. - 95 0 0 -16 47 2 8 10 39 3 99 -41 -18 3 20 .. .. .. -18 42 7 .. .. .. - 94 0 0 -16 59 31 8 10 39 4 99 -40 -18 16 1 .. .. .. -18 54 53 .. .. .. - 93 0 0 -17 12 37 8 10 40 5 99 -40 -18 29 19 -15 57 31 -19 8 19 .. .. .. - 92 0 0 -17 26 23 8 10 40 6 99 -39 -18 43 17 -16 11 4 -19 22 23 .. .. .. - 91 0 0 -17 40 46 8 10 40 7 98 -38 -18 57 53 -16 25 15 -19 37 6 .. .. .. - 90 0 0 -17 55 47 8 10 41 8 98 -37 -19 13 8 -16 40 3 -19 52 27 -16 2 45 - 89 0 0 -18 11 26 8 10 42 8 98 -36 -19 29 1 -16 55 29 -20 8 28 -16 18 5 - 88 0 0 -18 27 42 8 10 43 9 97 -36 -19 45 32 -17 11 32 -20 25 7 -16 34 1 - 87 0 0 -18 44 37 8 10 43 10 97 -35 -20 2 42 -17 28 12 -20 42 25 -16 50 34 - 86 0 0 -19 2 8 8 10 44 11 97 -34 -20 20 29 -17 45 29 -21 0 20 -17 7 44 - 85 0 0 -19 20 17 8 10 45 12 96 -33 -20 38 54 -18 3 23 -21 18 54 -17 25 31 - 84 0 0 -19 39 3 8 10 46 13 96 -32 -20 57 57 -18 21 53 -21 38 6 -17 43 54 - 83 0 0 -19 58 26 8 10 48 14 95 -31 -21 17 37 -18 41 0 -21 57 55 -18 2 53 - 82 0 0 -20 18 26 8 10 49 15 95 -30 -21 37 55 -19 0 43 -22 18 22 -18 22 28 - 81 0 0 -20 39 2 8 10 50 16 95 -29 -21 58 49 -19 21 1 -22 39 25 -18 42 38 - 80 0 0 -21 0 14 8 10 52 17 94 -28 -22 20 19 -19 41 56 -23 1 6 -19 3 24 - 79 0 0 -21 22 2 8 10 53 18 94 -27 -22 42 27 -20 3 26 -23 23 23 -19 24 46 - 78 0 0 -21 44 25 8 10 55 19 93 -26 -23 5 10 -20 25 30 -23 46 17 -19 46 42 - 77 0 0 -22 7 23 8 10 56 20 93 -25 -23 28 28 -20 48 10 -24 9 46 -20 9 12 - 76 0 0 -22 30 56 8 10 58 21 92 -25 -23 52 22 -21 11 24 -24 33 51 -20 32 17 - 75 0 0 -22 55 4 8 11 0 22 92 -24 -24 16 50 -21 35 12 -24 58 30 -20 55 55 - 74 0 0 -23 19 45 8 11 2 23 91 -23 -24 41 53 -21 59 33 -25 23 45 -21 20 7 - 73 0 0 -23 45 0 8 11 4 24 91 -22 -25 7 30 -22 24 28 -25 49 33 -21 44 52 - 72 0 0 -24 10 48 8 11 6 25 90 -21 -25 33 40 -22 49 55 -26 15 55 -22 10 9 - 71 0 0 -24 37 8 8 11 8 26 89 -20 -26 0 23 -23 15 54 -26 42 50 -22 35 59 - 70 0 0 -25 4 1 8 11 10 27 89 -19 -26 27 39 -23 42 25 -27 10 17 -23 2 19 - 69 0 0 -25 31 24 8 11 13 28 88 -18 -26 55 26 -24 9 27 -27 38 17 -23 29 11 - 68 0 0 -25 59 19 8 11 15 28 87 -17 -27 23 43 -24 36 59 -28 6 47 -23 56 33 - 67 0 0 -26 27 43 8 11 18 29 87 -16 -27 52 32 -25 5 1 -28 35 48 -24 24 24 - 66 0 0 -26 56 36 8 11 20 30 86 -15 -28 21 49 -25 33 32 -29 5 19 -24 52 45 - 65 0 0 -27 25 58 8 11 23 31 85 -14 -28 51 36 -26 2 32 -29 35 18 -25 21 34 - 64 0 0 -27 55 48 8 11 25 32 84 -13 -29 21 51 -26 31 59 -30 5 46 -25 50 50 - 63 0 0 -28 26 5 8 11 28 33 83 -11 -29 52 32 -27 1 53 -30 36 41 -26 20 33 - 62 0 0 -28 56 48 8 11 31 34 82 -10 -30 23 40 -27 32 13 -31 8 2 -26 50 42 - 61 0 0 -29 27 57 8 11 34 34 82 -9 -30 55 14 -28 2 58 -31 39 49 -27 21 17 - 60 0 0 -29 59 29 8 11 36 35 81 -8 -31 27 11 -28 34 8 -32 12 0 -27 52 15 - 59 0 0 -30 31 25 8 11 39 36 80 -7 -31 59 32 -29 5 40 -32 44 34 -28 23 37 - 58 0 0 -31 3 44 8 11 42 37 79 -6 -32 32 16 -29 37 36 -33 17 31 -28 55 21 - 57 0 0 -31 36 23 8 11 45 37 78 -5 -33 5 20 -30 9 52 -33 50 49 -29 27 27 - 56 0 0 -32 9 23 8 11 48 38 76 -4 -33 38 45 -30 42 29 -34 24 27 -29 59 52 - 55 0 0 -32 42 42 8 11 52 39 75 -3 -34 12 29 -31 15 24 -34 58 24 -30 32 37 - 54 0 0 -33 16 18 8 11 55 39 74 -2 -34 46 30 -31 48 38 -35 32 39 -31 5 41 - 53 0 0 -33 50 12 8 11 58 40 73 -1 -35 20 48 -32 22 9 -36 7 10 -31 39 1 - 52 0 0 -34 24 20 8 12 1 41 72 0 -35 55 21 -32 55 56 -36 41 56 -32 12 37 - 51 0 0 -34 58 43 8 12 4 41 70 1 -36 30 8 -33 29 57 -37 16 55 -32 46 28 - 50 0 0 -35 33 19 8 12 8 42 69 2 -37 5 7 -34 4 11 -37 52 7 -33 20 32 - 49 0 0 -36 8 7 8 12 11 42 68 3 -37 40 18 -34 38 37 -38 27 30 -33 54 48 - 48 0 0 -36 43 4 8 12 15 43 66 4 -38 15 38 -35 13 14 -39 3 3 -34 29 15 - 47 0 0 -37 18 11 8 12 18 43 65 5 -38 51 7 -35 48 0 -39 38 43 -35 3 52 - 46 0 0 -37 53 25 8 12 21 44 63 6 -39 26 42 -36 22 54 -40 14 30 -35 38 36 - 45 0 0 -38 28 44 8 12 25 44 62 7 -40 2 23 -36 57 55 -40 50 23 -36 13 28 - 44 0 0 -39 4 9 8 12 28 45 60 8 -40 38 8 -37 33 1 -41 26 18 -36 48 25 - 43 0 0 -39 39 36 8 12 32 45 59 9 -41 13 55 -38 8 11 -42 2 16 -37 23 27 - 42 0 0 -40 15 6 8 12 35 45 57 9 -41 49 43 -38 43 23 -42 38 14 -37 58 31 - 41 0 0 -40 50 35 8 12 38 46 56 10 -42 25 31 -39 18 36 -43 14 12 -38 33 36 - 40 0 0 -41 26 4 8 12 42 46 54 11 -43 1 16 -39 53 48 -43 50 6 -39 8 41 - 39 0 0 -42 1 29 8 12 45 46 52 12 -43 36 58 -40 28 59 -44 25 57 -39 43 45 - 38 0 0 -42 36 51 8 12 49 47 51 13 -44 12 35 -41 4 7 -45 1 42 -40 18 46 - 37 0 0 -43 12 6 8 12 52 47 49 14 -44 48 5 -41 39 10 -45 37 20 -40 53 43 - 36 0 0 -43 47 15 8 12 56 47 47 15 -45 23 27 -42 14 7 -46 12 49 -41 28 35 - 35 0 0 -44 22 16 8 12 59 47 46 16 -45 58 40 -42 48 56 -46 48 8 -42 3 19 - 34 0 0 -44 57 7 8 13 2 47 44 17 -46 33 41 -43 23 37 -47 23 16 -42 37 55 - 33 0 0 -45 31 46 8 13 6 47 42 17 -47 8 31 -43 58 7 -47 58 11 -43 12 21 - 32 0 0 -46 6 13 8 13 9 47 41 18 -47 43 7 -44 32 27 -48 32 51 -43 46 37 - 31 0 0 -46 40 26 8 13 12 47 39 19 -48 17 27 -45 6 33 -49 7 16 -44 20 40 - 30 0 0 -47 14 25 8 13 15 47 37 20 -48 51 32 -45 40 26 -49 41 24 -44 54 30 - 29 0 0 -47 48 7 8 13 19 47 36 21 -49 25 19 -46 14 3 -50 15 13 -45 28 6 - 28 0 0 -48 21 31 8 13 22 47 34 21 -49 58 47 -46 47 24 -50 48 44 -46 1 25 - 27 0 0 -48 54 37 8 13 25 47 32 22 -50 31 56 -47 20 28 -51 21 53 -46 34 28 - 26 0 0 -49 27 24 8 13 28 47 30 23 -51 4 43 -47 53 14 -51 54 42 -47 7 13 - 25 0 0 -49 59 49 8 13 31 47 29 24 -51 37 9 -48 25 40 -52 27 7 -47 39 39 - 24 0 0 -50 31 53 8 13 34 47 27 24 -52 9 11 -48 57 45 -52 59 9 -48 11 45 - 23 0 0 -51 3 35 8 13 37 46 25 25 -52 40 50 -49 29 29 -53 30 46 -48 43 30 - 22 0 0 -51 34 53 8 13 40 46 24 26 -53 12 4 -50 0 50 -54 1 58 -49 14 53 - 21 0 0 -52 5 46 8 13 43 46 22 26 -53 42 52 -50 31 49 -54 32 43 -49 45 54 - 20 0 0 -52 36 15 8 13 46 46 21 27 -54 13 14 -51 2 24 -55 3 2 -50 16 31 - 19 0 0 -53 6 18 8 13 49 45 19 28 -54 43 10 -51 32 34 -55 32 53 -50 46 45 - 18 0 0 -53 35 55 8 13 51 45 18 28 -55 12 37 -52 2 18 -56 2 16 -51 16 33 - 17 0 0 -54 5 4 8 13 54 45 16 29 -55 41 37 -52 31 37 -56 31 10 -51 45 56 - 16 0 0 -54 33 46 8 13 57 45 14 29 -56 10 7 -53 0 29 -56 59 35 -52 14 54 - 15 0 0 -55 2 0 8 13 59 44 13 30 -56 38 9 -53 28 55 -57 27 30 -52 43 24 - 14 0 0 -55 29 46 8 14 2 44 12 30 -57 5 42 -53 56 53 -57 54 55 -53 11 28 - 13 0 0 -55 57 3 8 14 4 44 10 31 -57 32 44 -54 24 23 -58 21 50 -53 39 5 - 12 0 0 -56 23 52 8 14 7 43 9 31 -57 59 17 -54 51 26 -58 48 14 -54 6 14 - 11 0 0 -56 50 10 8 14 9 43 7 32 -58 25 19 -55 17 59 -59 14 8 -54 32 54 - 10 0 0 -57 16 0 8 14 11 42 6 32 -58 50 51 -55 44 5 -59 39 31 -54 59 7 - 9 0 0 -57 41 20 8 14 14 42 4 33 -59 15 53 -56 9 41 -60 4 22 -55 24 51 - 8 0 0 -58 6 10 8 14 16 42 3 33 -59 40 24 -56 34 48 -60 28 43 -55 50 7 - 7 0 0 -58 30 30 8 14 18 41 2 34 -60 4 25 -56 59 27 -60 52 33 -56 14 54 - 6 0 0 -58 54 20 8 14 20 41 0 34 -60 27 55 -57 23 36 -61 15 52 -56 39 11 - 5 0 0 -59 17 41 8 14 22 41 359 35 -60 50 54 -57 47 16 -61 38 41 -57 3 1 - 4 0 0 -59 40 32 8 14 24 40 358 35 -61 13 24 -58 10 27 -62 0 58 -57 26 21 - 3 0 0 -60 2 54 8 14 26 40 356 35 -61 35 23 -58 33 9 -62 22 46 -57 49 12 - 2 0 0 -60 24 46 8 14 28 39 355 36 -61 56 52 -58 55 21 -62 44 3 -58 11 35 - 1 0 0 -60 46 8 8 14 30 39 354 36 -62 17 52 -59 17 5 -63 4 50 -58 33 29 0 0 0 -61 7 2 8 14 32 39 353 36 -62 38 22 -59 38 21 -63 25 7 -58 54 54 1 0 0 -61 27 26 8 14 34 38 351 37 -62 58 22 -59 59 7 -63 44 55 -59 15 51 2 0 0 -61 47 22 8 14 36 38 350 37 -63 17 54 -60 19 25 -64 4 13 -59 36 20 3 0 0 -62 6 50 8 14 38 37 349 37 -63 36 57 -60 39 16 -64 23 3 -59 56 21 4 0 0 -62 25 49 8 14 39 37 348 38 -63 55 32 -60 58 38 -64 41 25 -60 15 54 5 0 0 -62 44 21 8 14 41 37 347 38 -64 13 38 -61 17 32 -64 59 18 -60 34 59 6 0 0 -63 2 25 8 14 42 36 345 38 -64 31 18 -61 36 0 -65 16 44 -60 53 37 7 0 0 -63 20 2 8 14 44 36 344 38 -64 48 29 -61 54 0 -65 33 43 -61 11 48 8 0 0 -63 37 12 8 14 46 35 343 39 -65 5 14 -62 11 33 -65 50 14 -61 29 33 9 0 0 -63 53 56 8 14 47 35 342 39 -65 21 33 -62 28 40 -66 6 19 -61 46 51 10 0 0 -64 10 14 8 14 49 35 341 39 -65 37 25 -62 45 21 -66 21 58 -62 3 43 11 0 0 -64 26 6 8 14 50 34 340 39 -65 52 52 -63 1 36 -66 37 12 -62 20 9 12 0 0 -64 41 32 8 14 51 34 339 40 -66 7 54 -63 17 26 -66 52 0 -62 36 9 13 0 0 -64 56 34 8 14 53 33 338 40 -66 22 30 -63 32 50 -67 6 23 -62 51 45 14 0 0 -65 11 11 8 14 54 33 336 40 -66 36 43 -63 47 50 -67 20 22 -63 6 55 15 0 0 -65 25 23 8 14 55 33 335 40 -66 50 31 -64 2 26 -67 33 57 -63 21 42 16 0 0 -65 39 12 8 14 57 32 334 40 -67 3 55 -64 16 37 -67 47 9 -63 36 4 17 0 0 -65 52 37 8 14 58 32 333 40 -67 16 57 -64 30 25 -67 59 58 -63 50 2 18 0 0 -66 5 40 8 14 59 31 332 40 -67 29 35 -64 43 49 -68 12 24 -64 3 37 19 0 0 -66 18 19 8 15 0 31 331 41 -67 41 51 -64 56 51 -68 24 27 -64 16 49 20 0 0 -66 30 37 8 15 1 31 330 41 -67 53 45 -65 9 29 -68 36 9 -64 29 38 21 0 0 -66 42 32 8 15 2 30 329 41 -68 5 18 -65 21 46 -68 47 29 -64 42 4 22 0 0 -66 54 6 8 15 4 30 328 41 -68 16 29 -65 33 41 -68 58 29 -64 54 9 23 0 0 -67 5 18 8 15 5 30 327 41 -68 27 20 -65 45 14 -69 9 8 -65 5 52 24 0 0 -67 16 10 8 15 6 29 326 41 -68 37 50 -65 56 26 -69 19 26 -65 17 14 25 0 0 -67 26 41 8 15 7 29 325 41 -68 47 59 -66 7 17 -69 29 25 -65 28 14 26 0 0 -67 36 52 8 15 8 28 324 41 -68 57 50 -66 17 47 -69 39 4 -65 38 54 27 0 0 -67 46 44 8 15 9 28 323 41 -69 7 20 -66 27 58 -69 48 24 -65 49 13 28 0 0 -67 56 15 8 15 10 28 321 42 -69 16 32 -66 37 48 -69 57 25 -65 59 13 29 0 0 -68 5 28 8 15 11 27 320 42 -69 25 25 -66 47 19 -70 6 7 -66 8 52 30 0 0 -68 14 22 8 15 11 27 319 42 -69 34 0 -66 56 31 -70 14 32 -66 18 12 31 0 0 -68 22 57 8 15 12 27 318 42 -69 42 16 -67 5 23 -70 22 39 -66 27 13 32 0 0 -68 31 14 8 15 13 26 317 42 -69 50 15 -67 13 57 -70 30 28 -66 35 55 33 0 0 -68 39 13 8 15 14 26 316 42 -69 57 56 -67 22 13 -70 38 0 -66 44 19 34 0 0 -68 46 54 8 15 15 26 315 42 -70 5 20 -67 30 10 -70 45 15 -66 52 24 35 0 0 -68 54 18 8 15 16 25 314 42 -70 12 27 -67 37 49 -70 52 13 -67 0 10 36 0 0 -69 1 24 8 15 17 25 313 42 -70 19 18 -67 45 11 -70 58 55 -67 7 40 37 0 0 -69 8 14 8 15 17 25 312 42 -70 25 52 -67 52 16 -71 5 21 -67 14 51 38 0 0 -69 14 47 8 15 18 24 311 42 -70 32 10 -67 59 3 -71 11 32 -67 21 45 39 0 0 -69 21 4 8 15 19 24 310 42 -70 38 13 -68 5 33 -71 17 26 -67 28 22 40 0 0 -69 27 5 8 15 20 24 309 42 -70 43 59 -68 11 47 -71 23 5 -67 34 42 41 0 0 -69 32 49 8 15 20 23 308 42 -70 49 30 -68 17 44 -71 28 30 -67 40 45 42 0 0 -69 38 18 8 15 21 23 307 42 -70 54 46 -68 23 25 -71 33 39 -67 46 32 43 0 0 -69 43 32 8 15 22 23 306 42 -70 59 47 -68 28 50 -71 38 33 -67 52 3 44 0 0 -69 48 30 8 15 22 22 305 42 -71 4 34 -68 34 0 -71 43 13 -67 57 17 45 0 0 -69 53 13 8 15 23 22 304 42 -71 9 5 -68 38 53 -71 47 39 -68 2 16 46 0 0 -69 57 40 8 15 24 22 303 42 -71 13 22 -68 43 31 -71 51 50 -68 6 59 47 0 0 -70 1 53 8 15 24 21 302 42 -71 17 25 -68 47 54 -71 55 48 -68 11 26 48 0 0 -70 5 52 8 15 25 21 301 42 -71 21 14 -68 52 1 -71 59 32 -68 15 37 49 0 0 -70 9 36 8 15 26 21 300 42 -71 24 49 -68 55 53 -72 3 2 -68 19 34 50 0 0 -70 13 5 8 15 26 20 299 42 -71 28 10 -68 59 31 -72 6 18 -68 23 15 51 0 0 -70 16 20 8 15 27 20 298 42 -71 31 17 -69 2 54 -72 9 21 -68 26 41 52 0 0 -70 19 21 8 15 27 20 297 42 -71 34 11 -69 6 2 -72 12 11 -68 29 53 53 0 0 -70 22 8 8 15 28 19 296 42 -71 36 51 -69 8 55 -72 14 48 -68 32 49 54 0 0 -70 24 42 8 15 28 19 295 42 -71 39 18 -69 11 34 -72 17 11 -68 35 31 55 0 0 -70 27 1 8 15 29 19 294 42 -71 41 31 -69 13 59 -72 19 22 -68 37 58 56 0 0 -70 29 7 8 15 29 18 293 42 -71 43 32 -69 16 9 -72 21 20 -68 40 11 57 0 0 -70 30 59 8 15 30 18 292 42 -71 45 19 -69 18 5 -72 23 5 -68 42 10 58 0 0 -70 32 37 8 15 30 18 291 42 -71 46 54 -69 19 48 -72 24 37 -68 43 53 59 0 0 -70 34 2 8 15 31 17 291 41 -71 48 15 -69 21 16 -72 25 57 -68 45 23 60 0 0 -70 35 13 8 15 31 17 290 41 -71 49 24 -69 22 30 -72 27 4 -68 46 38 61 0 0 -70 36 11 8 15 32 17 289 41 -71 50 19 -69 23 30 -72 27 58 -68 47 40 62 0 0 -70 36 56 8 15 32 16 288 41 -71 51 2 -69 24 16 -72 28 40 -68 48 27 63 0 0 -70 37 27 8 15 33 16 287 41 -71 51 32 -69 24 49 -72 29 10 -68 49 0 64 0 0 -70 37 45 8 15 33 16 286 41 -71 51 50 -69 25 7 -72 29 27 -68 49 18 65 0 0 -70 37 50 8 15 34 15 285 41 -71 51 54 -69 25 12 -72 29 31 -68 49 23 66 0 0 -70 37 41 8 15 34 15 284 41 -71 51 46 -69 25 2 -72 29 23 -68 49 14 67 0 0 -70 37 19 8 15 35 15 283 41 -71 51 25 -69 24 39 -72 29 3 -68 48 50 68 0 0 -70 36 44 8 15 35 14 282 41 -71 50 51 -69 24 3 -72 28 30 -68 48 12 69 0 0 -70 35 55 8 15 35 14 281 41 -71 50 5 -69 23 12 -72 27 45 -68 47 21 70 0 0 -70 34 53 8 15 36 14 280 41 -71 49 6 -69 22 7 -72 26 47 -68 46 15 71 0 0 -70 33 37 8 15 36 14 279 41 -71 47 54 -69 20 48 -72 25 37 -68 44 54 72 0 0 -70 32 9 8 15 37 13 278 40 -71 46 28 -69 19 16 -72 24 14 -68 43 20 73 0 0 -70 30 26 8 15 37 13 277 40 -71 44 51 -69 17 29 -72 22 38 -68 41 31 74 0 0 -70 28 30 8 15 37 13 276 40 -71 43 0 -69 15 28 -72 20 50 -68 39 28 75 0 0 -70 26 20 8 15 38 12 275 40 -71 40 56 -69 13 13 -72 18 49 -68 37 11 76 0 0 -70 23 57 8 15 38 12 274 40 -71 38 38 -69 10 44 -72 16 35 -68 34 39 77 0 0 -70 21 20 8 15 38 12 273 40 -71 36 8 -69 8 1 -72 14 8 -68 31 52 78 0 0 -70 18 29 8 15 39 11 272 40 -71 33 24 -69 5 3 -72 11 28 -68 28 51 79 0 0 -70 15 24 8 15 39 11 271 40 -71 30 27 -69 1 50 -72 8 34 -68 25 35 80 0 0 -70 12 4 8 15 39 11 270 39 -71 27 16 -68 58 23 -72 5 28 -68 22 4 81 0 0 -70 8 31 8 15 40 10 269 39 -71 23 51 -68 54 41 -72 2 8 -68 18 18 82 0 0 -70 4 43 8 15 40 10 268 39 -71 20 13 -68 50 44 -71 58 35 -68 14 17 83 0 0 -70 0 41 8 15 40 9 267 39 -71 16 21 -68 46 33 -71 54 48 -68 10 1 84 0 0 -69 56 24 8 15 41 9 267 39 -71 12 15 -68 42 6 -71 50 47 -68 5 29 85 0 0 -69 51 52 8 15 41 9 266 39 -71 7 54 -68 37 23 -71 46 32 -68 0 42 86 0 0 -69 47 5 8 15 41 8 265 39 -71 3 19 -68 32 26 -71 42 3 -67 55 38 87 0 0 -69 42 4 8 15 41 8 264 38 -70 58 29 -68 27 12 -71 37 20 -67 50 20 88 0 0 -69 36 46 8 15 42 8 263 38 -70 53 25 -68 21 43 -71 32 22 -67 44 45 89 0 0 -69 31 14 8 15 42 7 262 38 -70 48 5 -68 15 58 -71 27 10 -67 38 53 90 0 0 -69 25 25 8 15 42 7 261 38 -70 42 31 -68 9 56 -71 21 43 -67 32 46 91 0 0 -69 19 21 8 15 42 7 260 38 -70 36 41 -68 3 38 -71 16 0 -67 26 21 92 0 0 -69 13 0 8 15 43 6 259 38 -70 30 35 -67 57 4 -71 10 3 -67 19 40 93 0 0 -69 6 24 8 15 43 6 258 37 -70 24 14 -67 50 13 -71 3 50 .. .. .. 94 0 0 -68 59 30 8 15 43 6 257 37 -70 17 37 -67 43 4 -70 57 21 .. .. .. 95 0 0 -68 52 20 8 15 43 5 256 37 -70 10 43 -67 35 39 -70 50 35 .. .. .. 96 0 0 -68 44 53 8 15 43 5 255 37 -70 3 33 -67 27 56 -70 43 34 .. .. .. 97 0 0 -68 37 8 8 15 43 4 254 37 -69 56 6 -67 19 55 -70 36 16 .. .. .. 98 0 0 -68 29 6 8 15 44 4 253 36 -69 48 21 -67 11 36 -70 28 41 .. .. .. 99 0 0 -68 20 46 8 15 44 4 252 36 -69 40 20 -67 2 59 -70 20 49 .. .. .. 100 0 0 -68 12 8 8 15 44 3 252 36 -69 32 0 -66 54 3 -70 12 40 .. .. .. 101 0 0 -68 3 11 8 15 44 3 251 36 -69 23 23 -66 44 48 -70 4 13 .. .. .. 102 0 0 -67 53 56 8 15 44 2 250 35 -69 14 28 -66 35 14 -69 55 28 .. .. .. 103 0 0 -67 44 22 8 15 44 2 249 35 -69 5 13 -66 25 21 -69 46 25 .. .. .. 104 0 0 -67 34 28 8 15 44 2 248 35 -68 55 40 -66 15 8 -69 37 2 .. .. .. 105 0 0 -67 24 15 8 15 44 1 247 35 -68 45 48 -66 4 35 -69 27 21 .. .. .. 106 0 0 -67 13 41 8 15 44 1 246 34 -68 35 36 -65 53 42 -69 17 21 .. .. .. 107 0 0 -67 2 48 8 15 44 0 245 34 -68 25 4 .. .. .. -69 7 0 .. .. .. 108 0 0 .. .. .. .. .. .. .. .. .. -68 14 12 .. .. .. -68 56 20 .. .. .. 109 0 0 .. .. .. .. .. .. .. .. .. -68 3 0 .. .. .. -68 45 19 .. .. .. Data for the target star ------------------------ * name: TYC 5528-01159-1 * constellation : Virgo * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 12 42 06.0228 DE: -09 45 15.191 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .019, .022 ) * V mag [mag]: 10.4 * B mag [mag]: 11.3 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (7) Iris approx. diameter [km]: 200 approx. diameter ["]: .091 distance from Earth [AU]: 3.03300 * orbital information: orbit source: Preston date of fit: 2007 Nov 21 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 4102 number of rejected observations: 310 time covered by the observations: 1901 Mar 27 - 2007 Mar 03 1 sigma uncertainty ellipse (major, minor, PA): 0.006, 0.006, 111° remarks: * orbital elements for (7) Iris : Mean anomaly = 107.15167800 deg Arg. of pericenter = 145.35471623 deg Long. of node = 259.72016394 deg Inclination = 5.52742962 deg Eccentricity = 0.23144729 Semimajor axis = 2.38504781 AU Perihelion dist = 1.83303496 AU Mag: H = 5.46, G = 0.15 Epoch of elements : MJD 54438.34200000 TDT (2007 Dec 04.342) ------ occelmnt file for Occult BEGIN ----------------------------------- 2007 Dec 04 7 Iris 8h 13.2m UT 10.4 12 42 6.023- 9 45 15.19TYC 5528-01159-1 11.3 11.0 200 6.5 3.033 3.047 -22.11 -5.543 -9.749 54.21 -22.20 8.2200 -.29720 -.60748 15.53334 -7.62465 -0.00470 0.00172 2000 104.91950120071126.00000145.354716259.720164 5.5274300.231447292.385047811.833034965.515 0.15 RATE 2.6758290 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.023 0.020 1.4 1.250 0.023 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2007 Nov 21, 20:52 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org