IOTA/IOTA-ES occultation update for (65) Cybele / TYC 5247-00529-1 event on 2009 Aug 07, 23:29 UT Visible from Summary ------- On 2009 Aug 07 UT, the 237 km diameter asteroid (65) Cybele will occult a 11.5 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 1.0 mag to 11.9 mag (the magnitude of the asteroid) for at most 27.9 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: 2009 Aug 07, 23:19 - 2009 Aug 07, 23:41 UT * magnitude of target star: 11.5 * magnitude drop [mag]: 1.0 * estimated maximum duration [s]: 27.9 * Moon: 96 % sunlit, 14° distance * Sun: 145° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 238 * 1 sigma uncertainty interval [path widths]: +/- 0.29 * 1 sigma uncertainty interval [seconds]: +/- 6.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .026 +/- .041) * 1 sigma uncertainty ellipse (major, minor, PA): ( .041", .026", 359° ) * approx speed of asteroid's shadow [km/s]: 8.4996 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5247-00529-1 by 65 Cybele on 2009 Aug 7 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 - 53 0 0 -34 57 37 23 41 52 1 95 -34 -33 53 10 -36 2 8 -33 15 49 -36 39 36 - 52 0 0 -35 1 27 23 41 52 2 94 -35 -33 57 3 -36 5 55 -33 19 43 -36 43 22 - 51 0 0 -35 4 50 23 41 51 2 93 -36 -34 0 28 -36 9 16 -33 23 10 -36 46 41 - 50 0 0 -35 7 46 23 41 51 3 93 -37 -34 3 26 -36 12 11 -33 26 9 -36 49 35 - 49 0 0 -35 10 16 23 41 50 4 92 -38 -34 5 58 -36 14 39 -33 28 42 -36 52 2 - 48 0 0 -35 12 19 23 41 49 5 92 -38 -34 8 3 -36 16 41 -33 30 48 -36 54 3 - 47 0 0 -35 13 56 23 41 48 6 91 -39 -34 9 41 -36 18 17 -33 32 26 -36 55 39 - 46 0 0 -35 15 7 23 41 47 6 91 -40 -34 10 52 -36 19 27 -33 33 38 -36 56 48 - 45 0 0 -35 15 51 23 41 46 7 90 -41 -34 11 37 -36 20 11 -33 34 23 -36 57 32 - 44 0 0 -35 16 9 23 41 45 8 89 -42 -34 11 55 -36 20 29 -33 34 41 -36 57 50 - 43 0 0 -35 16 1 23 41 43 9 89 -42 -34 11 47 -36 20 21 -33 34 33 -36 57 42 - 42 0 0 -35 15 27 23 41 41 10 88 -43 -34 11 12 -36 19 47 -33 33 58 -36 57 9 - 41 0 0 -35 14 27 23 41 39 11 88 -44 -34 10 11 -36 18 47 -33 32 56 -36 56 10 - 40 0 0 -35 13 0 23 41 37 11 87 -45 -34 8 43 -36 17 22 -33 31 28 -36 54 45 - 39 0 0 -35 11 8 23 41 35 12 87 -46 -34 6 49 -36 15 31 -33 29 33 -36 52 55 - 38 0 0 -35 8 49 23 41 33 13 86 -46 -34 4 29 -36 13 14 -33 27 12 -36 50 39 - 37 0 0 -35 6 5 23 41 30 14 85 -47 -34 1 43 -36 10 32 -33 24 25 -36 47 58 - 36 0 0 -35 2 54 23 41 28 15 85 -48 -33 58 30 -36 7 24 -33 21 11 -36 44 51 - 35 0 0 -34 59 18 23 41 25 15 84 -49 -33 54 51 -36 3 50 -33 17 30 -36 41 19 - 34 0 0 -34 55 16 23 41 22 16 84 -50 -33 50 46 -35 59 51 -33 13 23 -36 37 21 - 33 0 0 -34 50 48 23 41 19 17 83 -50 -33 46 15 -35 55 26 -33 8 50 -36 32 58 - 32 0 0 -34 45 53 23 41 16 18 83 -51 -33 41 17 -35 50 35 -33 3 50 -36 28 9 - 31 0 0 -34 40 33 23 41 13 19 82 -52 -33 35 53 -35 45 19 -32 58 25 -36 22 55 - 30 0 0 -34 34 47 23 41 9 19 82 -53 -33 30 3 -35 39 37 -32 52 32 -36 17 15 - 29 0 0 -34 28 35 23 41 5 20 81 -54 -33 23 47 -35 33 29 -32 46 13 -36 11 10 - 28 0 0 -34 21 57 23 41 2 21 80 -54 -33 17 4 -35 26 55 -32 39 28 -36 4 39 - 27 0 0 -34 14 53 23 40 58 22 80 -55 -33 9 55 -35 19 56 -32 32 16 -35 57 43 - 26 0 0 -34 7 23 23 40 53 23 79 -56 -33 2 20 -35 12 31 -32 24 38 -35 50 21 - 25 0 0 -33 59 26 23 40 49 24 79 -57 -32 54 18 -35 4 40 -32 16 34 -35 42 33 - 24 0 0 -33 51 4 23 40 45 24 78 -58 -32 45 50 -34 56 23 -32 8 3 -35 34 19 - 23 0 0 -33 42 15 23 40 40 25 78 -58 -32 36 56 -34 47 40 -31 59 5 -35 25 40 - 22 0 0 -33 33 1 23 40 36 26 77 -59 -32 27 35 -34 38 32 -31 49 41 -35 16 35 - 21 0 0 -33 23 20 23 40 31 27 77 -60 -32 17 48 -34 28 57 -31 39 50 -35 7 4 - 20 0 0 -33 13 13 23 40 26 28 76 -61 -32 7 35 -34 18 57 -31 29 33 -34 57 7 - 19 0 0 -33 2 39 23 40 20 29 75 -62 -31 56 55 -34 8 30 -31 18 49 -34 46 45 - 18 0 0 -32 51 40 23 40 15 29 75 -62 -31 45 48 -33 57 37 -31 7 38 -34 35 56 - 17 0 0 -32 40 14 23 40 10 30 74 -63 -31 34 15 -33 46 18 -30 56 1 -34 24 41 - 16 0 0 -32 28 21 23 40 4 31 74 -64 -31 22 15 -33 34 33 -30 43 57 -34 13 1 - 15 0 0 -32 16 2 23 39 58 32 73 -65 -31 9 49 -33 22 22 -30 31 27 -34 0 54 - 14 0 0 -32 3 17 23 39 52 33 73 -66 -30 56 56 -33 9 45 -30 18 29 -33 48 21 - 13 0 0 -31 50 5 23 39 46 34 72 -66 -30 43 36 -32 56 41 -30 5 5 -33 35 22 - 12 0 0 -31 36 27 23 39 40 35 72 -67 -30 29 50 -32 43 11 -29 51 14 -33 21 56 - 11 0 0 -31 22 23 23 39 33 35 71 -68 -30 15 37 -32 29 14 -29 36 56 -33 8 5 - 10 0 0 -31 7 51 23 39 26 36 71 -69 -30 0 57 -32 14 52 -29 22 12 -32 53 47 - 9 0 0 -30 52 53 23 39 20 37 70 -70 -29 45 51 -32 0 2 -29 7 0 -32 39 3 - 8 0 0 -30 37 29 23 39 13 38 69 -70 -29 30 18 -31 44 47 -28 51 22 -32 23 52 - 7 0 0 -30 21 38 23 39 5 39 69 -71 -29 14 18 -31 29 5 -28 35 17 -32 8 15 - 6 0 0 -30 5 21 23 38 58 40 68 -72 -28 57 52 -31 12 56 -28 18 46 -31 52 12 - 5 0 0 -29 48 36 23 38 51 41 68 -73 -28 40 58 -30 56 21 -28 1 47 -31 35 43 - 4 0 0 -29 31 26 23 38 43 42 67 -73 -28 23 39 -30 39 20 -27 44 22 -31 18 47 - 3 0 0 -29 13 49 23 38 35 42 67 -74 -28 5 52 -30 21 52 -27 26 30 -31 1 24 - 2 0 0 -28 55 45 23 38 27 43 66 -75 -27 47 39 -30 3 58 -27 8 12 -30 43 36 - 1 0 0 -28 37 15 23 38 19 44 66 -76 -27 28 59 -29 45 37 -26 49 27 -30 25 21 0 0 0 -28 18 18 23 38 11 45 65 -76 -27 9 53 -29 26 50 -26 30 15 -30 6 39 1 0 0 -27 58 55 23 38 2 46 65 -77 -26 50 21 -29 7 37 -26 10 37 -29 47 32 2 0 0 -27 39 6 23 37 53 47 64 -78 -26 30 22 -28 47 58 -25 50 33 -29 27 58 3 0 0 -27 18 51 23 37 45 48 64 -78 -26 9 57 -28 27 52 -25 30 2 -29 7 58 4 0 0 -26 58 9 23 37 35 49 63 -79 -25 49 6 -28 7 20 -25 9 5 -28 47 32 5 0 0 -26 37 2 23 37 26 50 63 -79 -25 27 48 -27 46 23 -24 47 42 -28 26 40 6 0 0 -26 15 28 23 37 17 51 62 -80 -25 6 5 -27 24 59 -24 25 53 -28 5 22 7 0 0 -25 53 29 23 37 7 52 62 -80 -24 43 56 -27 3 10 -24 3 39 -27 43 39 8 0 0 -25 31 4 23 36 58 52 61 -81 -24 21 22 -26 40 55 -23 40 59 -27 21 30 9 0 0 -25 8 14 23 36 48 53 61 -81 -23 58 22 -26 18 14 -23 17 53 -26 58 55 10 0 0 -24 44 59 23 36 38 54 60 -81 -23 34 57 -25 55 9 -22 54 22 -26 35 55 11 0 0 -24 21 18 23 36 27 55 59 -81 -23 11 6 -25 31 38 -22 30 26 -26 12 30 12 0 0 -23 57 13 23 36 17 56 59 -81 -22 46 51 -25 7 42 -22 6 6 -25 48 39 13 0 0 -23 32 43 23 36 6 57 58 -81 -22 22 12 -24 43 22 -21 41 21 -25 24 25 14 0 0 -23 7 48 23 35 56 58 58 -81 -21 57 8 -24 18 37 -21 16 12 -24 59 45 15 0 0 -22 42 30 23 35 45 59 57 -80 -21 31 40 -23 53 28 -20 50 38 -24 34 42 16 0 0 -22 16 47 23 35 34 60 57 -80 -21 5 48 -23 27 54 -20 24 41 -24 9 14 17 0 0 -21 50 41 23 35 22 61 56 -79 -20 39 33 -23 1 58 -19 58 21 -23 43 23 18 0 0 -21 24 12 23 35 11 62 55 -79 -20 12 55 -22 35 38 -19 31 38 -23 17 8 19 0 0 -20 57 20 23 34 59 63 55 -78 -19 45 55 -22 8 55 -19 4 32 -22 50 30 20 0 0 -20 30 6 23 34 48 64 54 -78 -19 18 31 -21 41 49 -18 37 4 -22 23 29 21 0 0 -20 2 29 23 34 36 65 54 -77 -18 50 46 -21 14 21 -18 9 14 -21 56 7 22 0 0 -19 34 31 23 34 24 66 53 -76 -18 22 40 -20 46 31 -17 41 2 -21 28 22 23 0 0 -19 6 12 23 34 11 67 52 -75 -17 54 12 -20 18 20 -17 12 30 -21 0 15 24 0 0 -18 37 32 23 33 59 68 51 -74 -17 25 24 -19 49 48 -16 43 37 -20 31 48 25 0 0 -18 8 31 23 33 47 69 51 -74 -16 56 16 -19 20 55 -16 14 24 -20 2 59 26 0 0 -17 39 11 23 33 34 70 50 -73 -16 26 48 -18 51 42 -15 44 52 -19 33 51 27 0 0 -17 9 31 23 33 21 71 49 -72 -15 57 1 -18 22 10 -15 15 1 -19 4 23 28 0 0 -16 39 32 23 33 8 72 48 -71 -15 26 55 -17 52 19 -14 44 51 -18 34 36 29 0 0 -16 9 16 23 32 55 73 47 -70 -14 56 31 -17 22 9 -14 14 23 -18 4 30 30 0 0 -15 38 41 23 32 42 74 46 -69 -14 25 50 -16 51 41 -13 43 38 -17 34 6 31 0 0 -15 7 50 23 32 29 75 44 -68 -13 54 53 -16 20 56 -13 12 37 -17 3 24 32 0 0 -14 36 42 23 32 16 76 43 -67 -13 23 39 -15 49 54 -12 41 20 -16 32 26 33 0 0 -14 5 18 23 32 2 77 41 -66 -12 52 9 -15 18 36 -12 9 47 -16 1 12 34 0 0 -13 33 40 23 31 49 78 40 -65 -12 20 25 -14 47 3 -11 38 0 -15 29 42 35 0 0 -13 1 47 23 31 35 79 37 -64 -11 48 27 -14 15 15 -11 5 58 -14 57 56 36 0 0 -12 29 40 23 31 21 80 35 -63 -11 16 15 -13 43 13 -10 33 44 -14 25 57 37 0 0 -11 57 20 23 31 8 81 32 -62 -10 43 51 -13 10 57 -10 1 17 -13 53 45 38 0 0 -11 24 48 23 30 54 82 28 -61 -10 11 14 -12 38 30 - 9 28 38 -13 21 19 39 0 0 -10 52 4 23 30 40 83 23 -60 - 9 38 27 -12 5 50 - 8 55 48 -12 48 41 40 0 0 -10 19 10 23 30 26 84 18 -59 - 9 5 29 -11 32 59 - 8 22 48 -12 15 53 41 0 0 - 9 46 5 23 30 12 84 10 -58 - 8 32 21 -10 59 58 - 7 49 38 -11 42 53 42 0 0 - 9 12 52 23 29 58 85 0 -57 - 7 59 5 -10 26 47 - 7 16 20 -11 9 44 43 0 0 - 8 39 30 23 29 44 85 348 -56 - 7 25 40 - 9 53 27 - 6 42 54 -10 36 26 44 0 0 - 8 6 0 23 29 29 86 334 -55 - 6 52 9 - 9 20 0 - 6 9 21 -10 3 0 45 0 0 - 7 32 24 23 29 15 86 319 -54 - 6 18 31 - 8 46 26 - 5 35 42 - 9 29 26 46 0 0 - 6 58 42 23 29 1 85 306 -53 - 5 44 47 - 8 12 45 - 5 1 58 - 8 55 47 47 0 0 - 6 24 55 23 28 47 85 294 -52 - 5 10 59 - 7 38 59 - 4 28 9 - 8 22 1 48 0 0 - 5 51 4 23 28 32 84 285 -51 - 4 37 7 - 7 5 9 - 3 54 17 - 7 48 11 49 0 0 - 5 17 9 23 28 18 83 279 -50 - 4 3 12 - 6 31 14 - 3 20 21 - 7 14 17 50 0 0 - 4 43 12 23 28 4 83 273 -49 - 3 29 15 - 5 57 18 - 2 46 24 - 6 40 20 51 0 0 - 4 9 14 23 27 50 82 269 -47 - 2 55 17 - 5 23 19 - 2 12 27 - 6 6 21 52 0 0 - 3 35 15 23 27 35 81 266 -46 - 2 21 19 - 4 49 19 - 1 38 29 - 5 32 21 53 0 0 - 3 1 16 23 27 21 80 263 -45 - 1 47 21 - 4 15 19 - 1 4 31 - 4 58 20 54 0 0 - 2 27 19 23 27 7 79 261 -44 - 1 13 25 - 3 41 20 - 0 30 36 - 4 24 20 55 0 0 - 1 53 23 23 26 53 78 259 -43 - 0 39 31 - 3 7 22 0 3 17 - 3 50 21 56 0 0 - 1 19 30 23 26 39 77 257 -42 - 0 5 40 - 2 33 27 0 37 6 - 3 16 25 57 0 0 - 0 45 41 23 26 25 76 256 -41 0 28 6 - 1 59 36 1 10 52 - 2 42 32 58 0 0 - 0 11 56 23 26 11 74 255 -40 1 1 48 - 1 25 48 1 44 32 - 2 8 43 59 0 0 0 21 42 23 25 57 73 254 -39 1 35 24 - 0 52 6 2 18 6 - 1 34 59 60 0 0 0 55 15 23 25 44 72 253 -38 2 8 53 - 0 18 30 2 51 33 - 1 1 20 61 0 0 1 28 41 23 25 30 71 252 -37 2 42 14 0 15 0 3 24 52 - 0 27 49 62 0 0 2 1 58 23 25 16 70 252 -36 3 15 28 0 48 21 3 58 3 0 5 35 63 0 0 2 35 6 23 25 3 69 251 -35 3 48 32 1 21 34 4 31 4 0 38 51 64 0 0 3 8 5 23 24 50 68 251 -33 4 21 26 1 54 38 5 3 56 1 11 58 65 0 0 3 40 53 23 24 37 67 250 -32 4 54 9 2 27 32 5 36 36 1 44 54 66 0 0 4 13 31 23 24 23 66 250 -31 5 26 40 3 0 14 6 9 4 2 17 40 67 0 0 4 45 55 23 24 10 65 249 -30 5 59 0 3 32 45 6 41 20 2 50 14 68 0 0 5 18 8 23 23 58 64 249 -29 6 31 6 4 5 3 7 13 23 3 22 36 69 0 0 5 50 6 23 23 45 63 249 -28 7 2 58 4 37 8 7 45 11 3 54 45 70 0 0 6 21 50 23 23 32 62 249 -27 7 34 35 5 8 59 8 16 45 4 26 39 71 0 0 6 53 19 23 23 20 61 249 -26 8 5 58 5 40 35 8 48 3 4 58 19 72 0 0 7 24 33 23 23 8 60 249 -25 8 37 4 6 11 55 9 19 6 5 29 44 73 0 0 7 55 30 23 22 56 58 248 -24 9 7 54 6 42 59 9 49 51 6 0 53 74 0 0 8 26 9 23 22 44 57 248 -23 9 38 26 7 13 47 10 20 19 6 31 45 75 0 0 8 56 32 23 22 32 56 248 -22 10 8 40 7 44 17 10 50 29 7 2 19 76 0 0 9 26 35 23 22 21 55 248 -21 10 38 36 8 14 29 11 20 20 7 32 36 77 0 0 9 56 20 23 22 9 54 248 -20 11 8 13 8 44 22 11 49 52 8 2 34 78 0 0 10 25 45 23 21 58 53 248 -19 11 37 29 9 13 55 12 19 4 8 32 12 79 0 0 10 54 51 23 21 47 52 248 -18 12 6 26 9 43 9 12 47 56 9 1 31 80 0 0 11 23 35 23 21 36 51 248 -16 12 35 2 10 12 3 13 16 26 9 30 29 81 0 0 11 51 58 23 21 26 50 249 -15 13 3 16 10 40 35 13 44 36 9 59 7 82 0 0 12 20 0 23 21 15 49 249 -14 13 31 9 11 8 46 14 12 23 10 27 23 83 0 0 12 47 40 23 21 5 48 249 -13 13 58 40 11 36 34 14 39 48 10 55 17 84 0 0 13 14 57 23 20 55 47 249 -12 14 25 47 12 4 1 15 6 51 11 22 49 85 0 0 13 41 51 23 20 45 46 249 -11 14 52 32 12 31 4 15 33 30 11 49 58 86 0 0 14 8 21 23 20 36 45 249 -10 15 18 53 12 57 44 15 59 45 12 16 43 87 0 0 14 34 28 23 20 26 44 249 -9 15 44 50 13 24 0 16 25 37 12 43 5 88 0 0 15 0 10 23 20 17 43 249 -8 16 10 23 13 49 52 16 51 4 13 9 3 89 0 0 15 25 28 23 20 8 42 250 -7 16 35 31 14 15 20 17 16 7 13 34 36 90 0 0 15 50 21 23 19 59 41 250 -6 17 0 14 14 40 23 17 40 44 13 59 44 91 0 0 16 14 49 23 19 51 40 250 -5 17 24 32 15 5 0 18 4 56 14 24 28 92 0 0 16 38 51 23 19 42 39 250 -4 17 48 24 15 29 12 18 28 43 14 48 45 93 0 0 17 2 27 23 19 34 38 251 -3 18 11 51 15 52 58 18 52 4 15 12 37 94 0 0 17 25 37 23 19 26 37 251 -2 18 34 51 16 16 18 19 14 58 15 36 3 95 0 0 17 48 21 23 19 18 36 251 -1 18 57 25 16 39 12 19 37 27 15 59 2 96 0 0 18 10 39 23 19 11 35 251 0 19 19 33 17 1 39 19 59 29 16 21 35 Uncertainty in time = +/- 9 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: TYC 5247-00529-1 * constellation : Aquarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 23 24 00.3829 DE: -04 17 22.932 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .021, .040 ) * V mag [mag]: 11.5 * B mag [mag]: 12.3 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (65) Cybele approx. diameter [km]: 237 approx. diameter ["]: .133 distance from Earth [AU]: 2.45100 * orbital information: orbit source: Preston date of fit: 2008 Mar 20 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1442 number of rejected observations: 126 time covered by the observations: 1903 Dec 14 - 2007 Jul 25 1 sigma uncertainty ellipse (major, minor, PA): 0.016, 0.010, 70° remarks: * orbital elements for (65) Cybele : Mean anomaly = 67.99848090 deg Arg. of pericenter = 104.47766914 deg Long. of node = 155.64585289 deg Inclination = 3.55987226 deg Eccentricity = 0.10798375 Semimajor axis = 3.43804524 AU Perihelion dist = 3.06679223 AU Mag: H = 6.70, G = 0.01 Epoch of elements : MJD 55050.97900000 TDT (2009 Aug 07.979) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Aug 7 65 Cybele 23h 29.4m UT 11.5 23 24 0.383- 4 17 22.93TYC 5247-00529-1 12.3 11.9 237 27.9 2.451 -0.991 -8.77 42.0348 -4.287 -170.92 16.16 23.4900 0.03815 -0.06293 -4.12930 -2.44218 -0.00298 -0.00124 2000 67.8471182009 8 7.00000104.477669155.645853 3.5598720.10798375 3.4380452 3.0667922 6.6 5.00.01 RATE 1.5460970 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.041 0.026 359 1.29 0.038 0 54545.5020090807_0529-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 11:53 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org