IOTA/IOTA-ES occultation update for (599) Luisa / TYC 7406-00149-1 event on 2008 May 09, 22:19 UT Visible from SW Australia, Antarctica Summary ------- On 2008 May 09 UT, the 65 km diameter asteroid (599) Luisa will occult a 11.3 mag star in the constellation Corona Australis for observers along a path across SW Australia, Antarctica. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.6 mag to 12.6 mag (the magnitude of the asteroid) for at most 7.3 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: 79 * date and approx. time of event: 2008 May 09, 22:08 - 2008 May 09, 22:31 UT * magnitude of target star: 11.3 * magnitude drop [mag]: 1.6 * estimated maximum duration [s]: 7.3 * Moon: 26 % sunlit, 161° distance * Sun: 132° distance * rough path description: SW Australia, Antarctica The occultation path -------------------- * approximate projected width [km]: 66 * 1 sigma uncertainty interval [path widths]: +/- 0.69 * 1 sigma uncertainty interval [seconds]: +/- 3.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .039 +/- .028) * 1 sigma uncertainty ellipse (major, minor, PA): ( .039", .028", 95° ) * approx speed of asteroid's shadow [km/s]: 8.8916 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7406-00149-1 by 599 Luisa on 2008 May 9 Centre Star Star Sun Path Limit1 Path Limit2 Error Limit1 Error Limit2 E. Longitude Latitude U.T. Alt Az Alt o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " o ' " o ' " o ' " o ' " Longitude Latitude Longitude Latitude Longitude Latitude Longitude Latitude 60 1 13 40 29 35 22 8 26 11 166 -24 60 28 8 40 17 50 59 33 52 40 42 6 61 4 38 40 2 45 58 55 19 41 0 44 61 19 59 34 39 49 22 8 44 17 167 -28 61 43 17 34 32 59 60 56 31 34 46 58 62 15 9 34 24 4 60 23 50 34 57 24 62 4 41 30 22 2 22 9 2 21 168 -31 62 26 22 30 16 58 61 42 54 30 27 19 62 56 6 30 10 20 61 12 39 30 34 59 62 35 1 26 46 46 22 9 20 25 168 -34 62 55 42 26 42 39 62 14 16 26 51 3 63 24 7 26 37 16 61 45 29 26 57 15 62 57 12 23 37 20 22 9 37 28 168 -36 63 17 11 23 33 50 62 37 9 23 40 59 63 44 40 23 29 14 62 9 23 23 46 16 63 14 3 20 45 42 22 9 55 31 168 -38 63 33 31 20 42 37 62 54 31 20 48 55 64 0 18 20 38 35 62 27 30 20 53 33 63 27 7 18 7 16 22 10 13 33 168 -39 63 46 11 18 4 30 63 8 0 18 10 8 64 12 27 18 0 52 62 41 32 18 14 18 63 37 22 15 39 4 22 10 31 36 168 -41 63 56 8 15 36 32 63 18 33 15 41 41 64 21 58 15 33 14 62 52 32 15 45 29 63 45 24 13 19 6 22 10 48 38 167 -42 64 3 55 13 16 46 63 26 50 13 21 31 64 29 25 13 13 43 63 1 10 13 25 2 63 51 39 11 5 55 22 11 6 40 167 -43 64 9 59 11 3 45 63 33 17 11 8 11 64 35 13 11 0 55 63 7 54 11 11 28 63 56 25 8 58 27 22 11 24 42 167 -44 64 14 36 8 56 25 63 38 13 9 0 35 64 39 39 8 53 44 63 13 3 9 3 40 63 59 57 6 55 51 22 11 42 44 167 -45 64 18 1 6 53 55 63 41 52 6 57 52 64 42 54 6 51 23 63 16 52 7 0 47 64 2 25 4 57 27 22 11 59 46 166 -46 64 20 23 4 55 37 63 44 25 4 59 22 64 45 9 4 53 13 63 19 33 5 2 9 64 3 56 3 2 44 22 12 17 48 166 -47 64 21 51 3 0 58 63 46 0 3 4 34 64 46 32 2 58 40 63 21 13 3 7 14 64 4 37 1 11 14 22 12 35 50 165 -48 64 22 30 1 9 33 63 46 44 1 13 0 64 47 7 1 7 20 63 22 0 1 15 34 64 4 33 - 0 37 23 22 12 53 52 165 -49 64 22 25 - 0 39 1 63 46 41 - 0 35 41 64 47 1 - 0 41 9 63 21 59 - 0 33 13 64 3 49 - 2 23 27 22 13 10 53 164 -49 64 21 40 - 2 25 2 63 45 56 - 2 21 48 64 46 17 - 2 27 6 63 21 15 - 2 19 24 64 2 26 - 4 7 14 22 13 28 55 164 -50 64 20 19 - 4 8 47 63 44 33 - 4 5 38 64 44 57 - 4 10 47 63 19 50 - 4 3 18 64 0 29 - 5 48 58 22 13 46 57 163 -51 64 18 23 - 5 50 28 63 42 33 - 5 47 24 64 43 5 - 5 52 25 63 17 48 - 5 45 7 63 57 59 - 7 28 50 22 14 4 58 162 -51 64 15 56 - 7 30 18 63 40 0 - 7 27 18 64 40 42 - 7 32 12 63 15 10 - 7 25 4 63 54 57 - 9 7 1 22 14 21 60 162 -52 64 12 58 - 9 8 27 63 36 55 - 9 5 31 64 37 50 - 9 10 20 63 11 59 - 9 3 20 63 51 25 -10 43 41 22 14 39 61 161 -52 64 9 32 -10 45 5 63 33 18 -10 42 12 64 34 30 -10 46 56 63 8 17 -10 40 3 63 47 25 -12 18 58 22 14 57 63 160 -53 64 5 37 -12 20 21 63 29 12 -12 17 30 64 30 43 -12 22 10 63 4 3 -12 15 23 63 42 57 -13 52 59 22 15 15 64 159 -53 64 1 15 -13 54 21 63 24 38 -13 51 33 64 26 30 -13 56 9 62 59 19 -13 49 28 63 38 1 -15 25 52 22 15 32 66 157 -53 63 56 27 -15 27 14 63 19 34 -15 24 27 64 21 52 -15 29 0 62 54 6 -15 22 23 63 32 38 -16 57 43 22 15 50 67 156 -53 63 51 12 -16 59 4 63 14 3 -16 56 18 64 16 48 -17 0 49 62 48 23 -16 54 15 63 26 47 -18 28 37 22 16 8 69 154 -54 63 45 31 -18 29 57 63 8 4 -18 27 13 64 11 20 -18 31 42 62 42 11 -18 25 11 63 20 30 -19 58 40 22 16 26 70 152 -54 63 39 23 -20 0 0 63 1 36 -19 57 17 64 5 26 -20 1 44 62 35 30 -19 55 15 63 13 45 -21 27 57 22 16 44 71 150 -54 63 32 49 -21 29 17 62 54 40 -21 26 34 63 59 7 -21 31 1 62 28 19 -21 24 32 63 6 32 -22 56 32 22 17 1 72 148 -54 63 25 48 -22 57 52 62 47 15 -22 55 9 63 52 22 -22 59 36 62 20 38 -22 53 7 62 58 50 -24 24 30 22 17 19 73 145 -54 63 18 19 -24 25 50 62 39 21 -24 23 7 63 45 10 -24 27 34 62 12 26 -24 21 5 62 50 39 -25 51 55 22 17 37 75 142 -54 63 10 21 -25 53 15 62 30 56 -25 50 31 63 37 32 -25 54 59 62 3 43 -25 48 29 62 41 57 -27 18 50 22 17 55 76 138 -54 63 1 54 -27 20 11 62 22 0 -27 17 26 63 29 25 -27 21 55 61 54 26 -27 15 23 62 32 44 -28 45 20 22 18 12 77 134 -54 62 52 57 -28 46 41 62 12 30 -28 43 55 63 20 50 -28 48 26 61 44 35 -28 41 51 62 22 57 -30 11 27 22 18 30 77 129 -53 62 43 27 -30 12 49 62 2 27 -30 10 1 63 11 44 -30 14 35 61 34 8 -30 7 57 62 12 36 -31 37 15 22 18 48 78 124 -53 62 33 24 -31 38 38 61 51 47 -31 35 49 63 2 6 -31 40 25 61 23 3 -31 33 43 62 1 37 -33 2 48 22 19 6 79 117 -53 62 22 45 -33 4 12 61 40 29 -33 1 21 62 51 54 -33 6 0 61 11 18 -32 59 13 61 50 0 -34 28 8 22 19 23 79 110 -53 62 11 28 -34 29 33 61 28 30 -34 26 40 62 41 6 -34 31 23 60 58 51 -34 24 30 61 37 40 -35 53 19 22 19 41 80 103 -52 61 59 31 -35 54 45 61 15 48 -35 51 49 62 29 40 -35 56 37 60 45 38 -35 49 38 61 24 35 -37 18 24 22 19 59 80 95 -52 61 46 51 -37 19 51 61 2 20 -37 16 52 62 17 33 -37 21 45 60 31 36 -37 14 38 61 10 43 -38 43 25 22 20 17 79 87 -51 61 33 24 -38 44 54 60 48 1 -38 41 51 62 4 41 -38 46 50 60 16 42 -38 39 35 60 55 57 -40 8 25 22 20 34 79 79 -51 61 19 6 -40 9 57 60 32 48 -40 6 50 61 51 2 -40 11 56 60 0 51 -40 4 30 60 40 15 -41 33 29 22 20 52 79 72 -51 61 3 54 -41 35 2 60 16 37 -41 31 51 61 36 31 -41 37 4 59 43 59 -41 29 28 60 23 31 -42 58 37 22 21 10 78 66 -50 60 47 41 -43 0 13 59 59 20 -42 56 57 61 21 3 -43 2 18 59 25 58 -42 54 30 60 5 38 -44 23 54 22 21 28 77 61 -49 60 30 23 -44 25 33 59 40 53 -44 22 11 61 4 32 -44 27 41 59 6 44 -44 19 40 59 46 31 -45 49 23 22 21 45 76 56 -49 60 11 53 -45 51 4 59 21 9 -45 47 36 60 46 53 -45 53 17 58 46 8 -45 45 1 59 26 0 -47 15 5 22 22 3 75 52 -48 59 52 2 -47 16 50 58 59 58 -47 13 15 60 27 58 -47 19 7 58 24 2 -47 10 35 59 3 56 -48 41 5 22 22 21 74 48 -48 59 30 42 -48 42 54 58 37 10 -48 39 11 60 7 38 -48 45 16 58 0 15 -48 36 25 58 40 8 -50 7 25 22 22 39 73 45 -47 59 7 41 -50 9 18 58 12 36 -50 5 26 59 45 43 -50 11 46 57 34 36 -50 2 34 58 14 24 -51 34 8 22 22 56 72 43 -46 58 42 48 -51 36 6 57 46 0 -51 32 5 59 22 1 -51 38 40 57 6 49 -51 29 5 57 46 27 -53 1 18 22 23 14 71 41 -46 58 15 47 -53 3 22 57 17 7 -52 59 9 58 56 18 -53 6 2 56 36 40 -52 56 2 57 15 59 -54 28 58 22 23 32 69 39 -45 57 46 21 -54 31 7 56 45 37 -54 26 43 58 28 17 -54 33 55 56 3 46 -54 23 26 56 42 37 -55 57 10 22 23 50 68 38 -44 57 14 7 -55 59 26 56 11 9 -55 54 48 57 57 37 -56 2 23 55 27 45 -55 51 22 56 5 55 -57 25 59 22 24 7 67 36 -43 56 38 39 -57 28 22 55 33 13 -57 23 29 57 23 53 -57 31 29 54 48 8 -57 19 51 55 25 20 -58 55 26 22 24 25 65 36 -42 55 59 27 -58 57 58 54 51 15 -58 52 47 56 46 35 -59 1 16 54 4 18 -58 48 56 54 40 10 -60 25 35 22 24 43 64 35 -42 55 15 49 -60 28 17 54 4 34 -60 22 46 56 5 4 -60 31 48 53 15 32 -60 18 41 53 49 34 -61 56 29 22 25 1 63 34 -41 54 26 56 -61 59 22 53 12 17 -61 53 29 55 18 34 -62 3 8 52 20 56 -61 49 7 52 52 28 -63 28 11 22 25 18 61 34 -40 53 31 45 -63 31 17 52 13 16 -63 24 57 54 26 4 -63 35 20 51 19 19 -63 20 15 51 47 28 -65 0 41 22 25 36 60 34 -39 52 28 55 -65 4 2 51 6 8 -64 57 11 53 26 17 -65 8 25 50 9 16 -64 52 8 50 32 47 -66 34 1 22 25 54 58 34 -38 51 16 41 -66 37 40 49 49 0 -66 30 13 52 17 30 -66 42 26 48 48 50 -66 24 43 49 6 0 -68 8 11 22 26 12 56 35 -37 49 52 44 -68 12 10 48 19 28 -68 4 1 50 57 30 -68 17 24 47 15 32 -67 57 59 47 23 56 -69 43 5 22 26 29 55 36 -36 48 13 54 -69 47 30 46 34 13 -69 38 29 49 23 13 -69 53 17 45 26 2 -69 31 51 45 22 9 -71 18 37 22 26 47 53 37 -35 46 15 50 -71 23 33 44 28 48 -71 13 30 47 30 27 -71 30 1 43 15 45 -71 6 7 42 54 28 -72 54 33 22 27 5 51 39 -33 43 52 26 -73 0 6 41 56 58 -72 48 47 45 13 10 -73 7 24 40 38 22 -72 40 29 39 52 1 -74 30 25 22 27 23 50 41 -32 40 54 53 -74 36 45 38 49 47 -74 23 52 42 22 42 -74 45 5 37 25 1 -74 14 26 36 1 48 -76 5 29 22 27 40 48 44 -31 37 10 9 -76 12 48 34 54 24 -75 57 55 38 46 0 -76 22 28 33 22 57 -75 47 4 31 4 40 -77 38 24 22 27 58 46 49 -30 32 18 44 -77 46 58 29 51 59 -77 29 33 34 3 13 -77 58 21 28 13 55 -77 16 55 24 32 21 -79 6 49 22 28 16 44 55 -28 25 51 23 -79 17 1 23 15 21 -78 56 22 27 43 49 -79 30 37 21 32 18 -78 41 29 15 45 38 -80 26 41 22 28 34 42 63 -27 17 6 12 -80 38 55 14 27 53 -80 14 13 19 2 15 -80 55 21 12 44 59 -79 56 36 4 0 6 -81 31 4 22 28 51 40 74 -26 5 13 16 -81 45 40 2 50 17 -81 16 17 7 0 15 -82 5 29 1 19 1 -80 55 36 - 11 2 59 -82 9 35 22 29 9 38 89 -24 - 10 13 14 -82 26 26 - 11 50 10 -81 52 39 - 8 59 52 -82 49 32 - 12 51 32 -81 29 8 - 28 16 24 -82 10 34 22 29 27 35 106 -23 - 28 4 46 -82 28 42 - 28 28 7 -81 52 24 - 27 48 47 -82 53 39 - 28 44 22 -81 27 15 - 45 0 22 -81 27 24 22 29 45 33 122 -21 - 45 24 28 -81 45 21 - 44 38 43 -81 9 21 - 46 2 13 -82 9 57 - 44 12 28 -80 44 17 - 58 59 38 -80 2 0 22 30 2 30 135 -19 - 59 43 28 -80 18 50 - 58 18 52 -79 44 57 - 60 49 23 -80 41 42 - 57 27 14 -79 21 7 - 69 44 9 -78 0 1 22 30 20 27 146 -17 - 70 33 33 -78 15 36 - 68 57 20 -77 44 8 - 71 46 13 -78 36 36 - 67 56 47 -77 21 45 - 77 48 19 -75 24 35 22 30 38 24 153 -15 - 78 35 50 -75 39 16 - 77 2 45 -75 9 33 - 79 44 43 -75 58 56 - 76 2 59 -74 48 13 - 83 58 0 -72 12 52 22 30 56 21 159 -12 - 84 40 36 -72 27 16 - 83 16 52 -71 58 2 - 85 41 45 -72 46 28 - 82 22 27 -71 36 53 - 88 52 6 -68 11 0 22 31 13 16 163 -9 - 89 28 32 -68 26 15 - 88 16 47 -67 55 13 - 90 20 39 -68 46 27 - 87 29 55 -67 32 35 - 93 6 52 -62 29 27 22 31 31 10 167 -5 - 93 35 43 -62 49 8 - 92 39 5 -62 8 48 - 94 17 13 -63 14 48 - 92 2 34 -61 38 34 Uncertainty in time = +/- 5 secs [Prediction of 2008 Apr 23.0] Data for the target star ------------------------ * name: TYC 7406-00149-1 * constellation : Corona Australis * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 18 27 40.6194 DE: -37 17 30.908 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .022, .022 ) * V mag [mag]: 11.3 * B mag [mag]: 11.4 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (599) Luisa approx. diameter [km]: 65 approx. diameter ["]: .056 distance from Earth [AU]: 1.59600 * orbital information: orbit source: Preston date of fit: 2008 Apr 22 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 875 number of rejected observations: 56 time covered by the observations: 1906 Apr 29 - 2008 Apr 15 1 sigma uncertainty ellipse (major, minor, PA): 0.032, 0.018, 97° remarks: * orbital elements for (599) Luisa : Mean anomaly = 312.54634027 deg Arg. of pericenter = 292.82762068 deg Long. of node = 44.68371686 deg Inclination = 16.66577860 deg Eccentricity = 0.29380930 Semimajor axis = 2.77230008 AU Perihelion dist = 1.95777255 AU Mag: H = 8.79, G = 0.15 Epoch of elements : MJD 54595.93000000 TDT (2008 May 09.930) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 May 9 599 Luisa 22h 20.0m UT 11.3 18 27 40.619-37 17 30.91TYC 7406-00149-1 11.4 12.6 65 7.3 1.596 0.112 -27.63 73.8269 -37.284 -155.89 17.65 22.3330 -0.17328 -0.00867 0.24603 -5.01263 -0.00397 0.00073 2000 311.2801512008 5 4.00000292.827621 44.683717 16.6657790.29380930 2.7723001 1.9577725 8.7 5.00.15 RATE 2.1352260 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.039 0.028 95 1.69 0.039 0 54579.5020080509_0149-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Apr 23, 04:17 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org