IOTA/IOTA-ES occultation update for (1017) Jacqueline / UCAC2 25617770 event on 2009 Apr 10, 16:22 UT Visible from Summary ------- On 2009 Apr 10 UT, the 38 km diameter asteroid (1017) Jacqueline will occult a 11.1 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.5 mag to 15.6 mag (the magnitude of the asteroid) for at most 3.5 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: 45 * date and approx. time of event: 2009 Apr 10, 16:11 - 2009 Apr 10, 16:23 UT * magnitude of target star: 11.1 * magnitude drop [mag]: 4.5 * estimated maximum duration [s]: 3.5 * Moon: 99 % sunlit, 66° distance * Sun: 103° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 38 * 1 sigma uncertainty interval [path widths]: +/- 1.45 * 1 sigma uncertainty interval [seconds]: +/- 8.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .063 +/- .036) * 1 sigma uncertainty ellipse (major, minor, PA): ( .063", .036", 91° ) * approx speed of asteroid's shadow [km/s]: 10.7548 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC2 25617770 by 1017 Jacqueline on 2009 Apr 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 102 0 0 -15 16 19 16 11 32 0 107 -73 -15 27 16 -15 5 22 -15 59 4 .. .. .. 103 0 0 -15 34 15 16 11 32 1 107 -74 -15 45 12 -15 23 18 -16 16 59 -14 51 36 104 0 0 -15 52 3 16 11 33 2 107 -75 -16 3 0 -15 41 7 -16 34 46 -15 9 26 105 0 0 -16 9 44 16 11 33 3 106 -75 -16 20 40 -15 58 48 -16 52 25 -15 27 8 106 0 0 -16 27 16 16 11 34 4 106 -76 -16 38 12 -16 16 20 -17 9 56 -15 44 42 107 0 0 -16 44 39 16 11 35 5 106 -77 -16 55 35 -16 33 44 -17 27 17 -16 2 7 108 0 0 -17 1 54 16 11 36 6 105 -77 -17 12 49 -16 50 59 -17 44 30 -16 19 23 109 0 0 -17 18 59 16 11 37 7 105 -78 -17 29 53 -17 8 5 -18 1 34 -16 36 30 110 0 0 -17 35 54 16 11 38 8 105 -78 -17 46 48 -17 25 1 -18 18 27 -16 53 27 111 0 0 -17 52 40 16 11 40 9 105 -78 -18 3 33 -17 41 46 -18 35 11 -17 10 14 112 0 0 -18 9 15 16 11 42 10 104 -79 -18 20 8 -17 58 22 -18 51 44 -17 26 51 113 0 0 -18 25 39 16 11 43 11 104 -79 -18 36 32 -18 14 47 -19 8 6 -17 43 17 114 0 0 -18 41 52 16 11 46 12 104 -79 -18 52 44 -18 31 1 -19 24 18 -17 59 33 115 0 0 -18 57 54 16 11 48 13 103 -79 -19 8 46 -18 47 3 -19 40 18 -18 15 37 116 0 0 -19 13 45 16 11 50 14 103 -79 -19 24 36 -19 2 54 -19 56 6 -18 31 29 117 0 0 -19 29 23 16 11 53 15 103 -79 -19 40 14 -19 18 33 -20 11 42 -18 47 10 118 0 0 -19 44 50 16 11 56 16 102 -78 -19 55 40 -19 34 0 -20 27 7 -19 2 39 119 0 0 -20 0 4 16 11 59 17 102 -78 -20 10 53 -19 49 15 -20 42 19 -19 17 55 120 0 0 -20 15 5 16 12 2 18 102 -78 -20 25 54 -20 4 17 -20 57 18 -19 32 58 121 0 0 -20 29 54 16 12 5 19 101 -77 -20 40 42 -20 19 6 -21 12 4 -19 47 49 122 0 0 -20 44 29 16 12 8 20 101 -77 -20 55 16 -20 33 41 -21 26 36 -20 2 26 123 0 0 -20 58 50 16 12 12 21 100 -76 -21 9 37 -20 48 4 -21 40 56 -20 16 50 124 0 0 -21 12 58 16 12 16 22 100 -75 -21 23 45 -21 2 12 -21 55 1 -20 31 1 125 0 0 -21 26 52 16 12 20 23 100 -75 -21 37 38 -21 16 7 -22 8 53 -20 44 57 126 0 0 -21 40 32 16 12 24 24 99 -74 -21 51 17 -21 29 47 -22 22 31 -20 58 39 127 0 0 -21 53 58 16 12 28 25 99 -73 -22 4 42 -21 43 14 -22 35 54 -21 12 7 128 0 0 -22 7 9 16 12 32 26 98 -73 -22 17 53 -21 56 25 -22 49 2 -21 25 20 129 0 0 -22 20 5 16 12 37 27 98 -72 -22 30 48 -22 9 22 -23 1 56 -21 38 19 130 0 0 -22 32 46 16 12 42 28 98 -71 -22 43 29 -22 22 3 -23 14 35 -21 51 2 131 0 0 -22 45 12 16 12 46 29 97 -70 -22 55 54 -22 34 30 -23 26 58 -22 3 31 132 0 0 -22 57 22 16 12 51 30 97 -69 -23 8 4 -22 46 41 -23 39 6 -22 15 44 133 0 0 -23 9 17 16 12 56 31 96 -69 -23 19 58 -22 58 37 -23 50 59 -22 27 41 134 0 0 -23 20 57 16 13 2 32 96 -68 -23 31 37 -23 10 17 -24 2 36 -22 39 23 135 0 0 -23 32 20 16 13 7 33 95 -67 -23 43 0 -23 21 41 -24 13 57 -22 50 48 136 0 0 -23 43 27 16 13 12 33 95 -66 -23 54 7 -23 32 49 -24 25 2 -23 1 58 137 0 0 -23 54 19 16 13 18 34 94 -65 -24 4 57 -23 43 41 -24 35 51 -23 12 52 138 0 0 -24 4 54 16 13 24 35 94 -64 -24 15 31 -23 54 16 -24 46 23 -23 23 29 139 0 0 -24 15 12 16 13 29 36 93 -63 -24 25 49 -24 4 35 -24 56 39 -23 33 49 140 0 0 -24 25 14 16 13 35 37 93 -63 -24 35 50 -24 14 37 -25 6 39 -23 43 53 141 0 0 -24 34 59 16 13 42 38 92 -62 -24 45 35 -24 24 23 -25 16 22 -23 53 41 142 0 0 -24 44 27 16 13 48 39 92 -61 -24 55 2 -24 33 52 -25 25 48 -24 3 11 143 0 0 -24 53 38 16 13 54 40 91 -60 -25 4 13 -24 43 3 -25 34 57 -24 12 24 144 0 0 -25 2 32 16 14 0 41 91 -59 -25 13 7 -24 51 58 -25 43 49 -24 21 21 145 0 0 -25 11 9 16 14 7 42 90 -58 -25 21 43 -25 0 35 -25 52 23 -24 30 0 146 0 0 -25 19 29 16 14 14 43 90 -57 -25 30 2 -25 8 55 -26 0 41 -24 38 21 147 0 0 -25 27 31 16 14 20 44 89 -56 -25 38 4 -25 16 58 -26 8 41 -24 46 25 148 0 0 -25 35 15 16 14 27 45 88 -56 -25 45 48 -25 24 43 -26 16 24 -24 54 12 149 0 0 -25 42 43 16 14 34 46 88 -55 -25 53 15 -25 32 11 -26 23 49 -25 1 41 150 0 0 -25 49 52 16 14 41 47 87 -54 -26 0 24 -25 39 21 -26 30 57 -25 8 52 151 0 0 -25 56 44 16 14 49 47 87 -53 -26 7 15 -25 46 13 -26 37 47 -25 15 46 152 0 0 -26 3 18 16 14 56 48 86 -52 -26 13 48 -25 52 47 -26 44 19 -25 22 21 153 0 0 -26 9 34 16 15 3 49 85 -51 -26 20 4 -25 59 4 -26 50 33 -25 28 39 154 0 0 -26 15 32 16 15 11 50 85 -50 -26 26 1 -26 5 2 -26 56 30 -25 34 38 155 0 0 -26 21 12 16 15 18 51 84 -49 -26 31 41 -26 10 43 -27 2 8 -25 40 20 156 0 0 -26 26 34 16 15 26 52 83 -48 -26 37 3 -26 16 5 -27 7 29 -25 45 43 157 0 0 -26 31 37 16 15 34 53 83 -47 -26 42 6 -26 21 9 -27 12 31 -25 50 48 158 0 0 -26 36 23 16 15 41 54 82 -47 -26 46 51 -26 25 55 -27 17 15 -25 55 35 159 0 0 -26 40 50 16 15 49 55 81 -46 -26 51 18 -26 30 22 -27 21 41 -26 0 4 160 0 0 -26 44 59 16 15 57 56 80 -45 -26 55 27 -26 34 32 -27 25 49 -26 4 14 161 0 0 -26 48 50 16 16 5 57 80 -44 -26 59 17 -26 38 23 -27 29 39 -26 8 5 162 0 0 -26 52 22 16 16 13 57 79 -43 -27 2 49 -26 41 55 -27 33 10 -26 11 39 163 0 0 -26 55 36 16 16 22 58 78 -42 -27 6 3 -26 45 9 -27 36 23 -26 14 53 164 0 0 -26 58 31 16 16 30 59 77 -41 -27 8 58 -26 48 5 -27 39 17 -26 17 49 165 0 0 -27 1 8 16 16 38 60 76 -40 -27 11 34 -26 50 42 -27 41 53 -26 20 27 166 0 0 -27 3 26 16 16 47 61 75 -39 -27 13 53 -26 53 0 -27 44 11 -26 22 46 167 0 0 -27 5 26 16 16 55 62 74 -38 -27 15 52 -26 55 0 -27 46 10 -26 24 46 168 0 0 -27 7 7 16 17 4 63 73 -37 -27 17 33 -26 56 41 -27 47 51 -26 26 28 169 0 0 -27 8 29 16 17 12 64 72 -37 -27 18 56 -26 58 4 -27 49 13 -26 27 51 170 0 0 -27 9 33 16 17 21 64 71 -36 -27 19 59 -26 59 8 -27 50 16 -26 28 55 171 0 0 -27 10 18 16 17 30 65 70 -35 -27 20 44 -26 59 53 -27 51 1 -26 29 40 172 0 0 -27 10 45 16 17 39 66 69 -34 -27 21 11 -27 0 19 -27 51 28 -26 30 7 173 0 0 -27 10 53 16 17 48 67 67 -33 -27 21 19 -27 0 27 -27 51 35 -26 30 15 174 0 0 -27 10 42 16 17 57 68 66 -32 -27 21 8 -27 0 16 -27 51 24 -26 30 4 175 0 0 -27 10 12 16 18 6 69 64 -31 -27 20 38 -26 59 47 -27 50 55 -26 29 34 176 0 0 -27 9 24 16 18 15 70 63 -30 -27 19 50 -26 58 58 -27 50 7 -26 28 45 177 0 0 -27 8 17 16 18 24 70 61 -29 -27 18 43 -26 57 51 -27 49 0 -26 27 38 178 0 0 -27 6 51 16 18 33 71 60 -28 -27 17 17 -26 56 25 -27 47 34 -26 26 12 179 0 0 -27 5 6 16 18 42 72 58 -27 -27 15 32 -26 54 40 -27 45 50 -26 24 27 180 0 0 -27 3 3 16 18 51 73 56 -26 -27 13 29 -26 52 36 -27 43 47 -26 22 23 -179 0 0 -27 0 40 16 19 1 74 54 -26 -27 11 7 -26 50 14 -27 41 26 -26 20 0 -178 0 0 -26 57 59 16 19 10 74 51 -25 -27 8 26 -26 47 33 -27 38 45 -26 17 18 -177 0 0 -26 55 0 16 19 20 75 49 -24 -27 5 27 -26 44 33 -27 35 46 -26 14 18 -176 0 0 -26 51 41 16 19 29 76 46 -23 -27 2 9 -26 41 15 -27 32 29 -26 10 58 -175 0 0 -26 48 4 16 19 38 76 43 -22 -26 58 32 -26 37 37 -27 28 53 -26 7 20 -174 0 0 -26 44 8 16 19 48 77 40 -21 -26 54 36 -26 33 41 -27 24 58 -26 3 24 -173 0 0 -26 39 54 16 19 58 78 36 -20 -26 50 22 -26 29 26 -27 20 45 -25 59 8 -172 0 0 -26 35 21 16 20 7 78 32 -19 -26 45 49 -26 24 53 -27 16 13 -25 54 34 -171 0 0 -26 30 29 16 20 17 79 28 -18 -26 40 58 -26 20 1 -27 11 22 -25 49 40 -170 0 0 -26 25 19 16 20 26 79 23 -17 -26 35 48 -26 14 50 -27 6 13 -25 44 29 -169 0 0 -26 19 50 16 20 36 80 18 -16 -26 30 19 -26 9 21 -27 0 46 -25 38 58 -168 0 0 -26 14 2 16 20 46 80 13 -15 -26 24 32 -26 3 33 -26 55 0 -25 33 9 -167 0 0 -26 7 56 16 20 55 80 7 -14 -26 18 26 -25 57 26 -26 48 55 -25 27 2 -166 0 0 -26 1 32 16 21 5 80 1 -13 -26 12 2 -25 51 1 -26 42 32 -25 20 35 -165 0 0 -25 54 49 16 21 15 81 354 -12 -26 5 20 -25 44 18 -26 35 51 -25 13 51 -164 0 0 -25 47 47 16 21 25 81 348 -12 -25 58 19 -25 37 16 -26 28 52 -25 6 48 -163 0 0 -25 40 28 16 21 34 80 342 -11 -25 51 0 -25 29 56 -26 21 34 -24 59 26 -162 0 0 -25 32 50 16 21 44 80 336 -10 -25 43 22 -25 22 18 -26 13 58 -24 51 46 -161 0 0 -25 24 54 16 21 54 80 330 -9 -25 35 27 -25 14 21 -26 6 4 -24 43 48 -160 0 0 -25 16 40 16 22 4 80 325 -8 -25 27 13 -25 6 6 -25 57 52 -24 35 32 -159 0 0 -25 8 7 16 22 14 79 320 -7 -25 18 41 -24 57 34 -25 49 22 -24 26 58 -158 0 0 -24 59 17 16 22 24 79 316 -6 -25 9 52 -24 48 43 -25 40 33 -24 18 6 -157 0 0 -24 50 9 16 22 33 78 311 -5 -25 0 44 -24 39 34 -25 31 28 -24 8 55 -156 0 0 -24 40 43 16 22 43 77 308 -4 -24 51 19 -24 30 8 -25 22 4 -23 59 27 -155 0 0 -24 31 0 16 22 53 77 304 -3 -24 41 36 -24 20 24 -25 12 23 -23 49 41 -154 0 0 -24 20 58 16 23 3 76 301 -2 -24 31 35 -24 10 22 -25 2 24 -23 39 38 -153 0 0 -24 10 40 16 23 13 75 298 -1 -24 21 17 -24 0 3 -24 52 7 -23 29 17 -152 0 0 -24 0 4 16 23 22 74 296 0 -24 10 42 -23 49 26 -24 41 34 -23 18 38 Uncertainty in time = +/- 9 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: UCAC2 25617770 * constellation : Sagittarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 18 33 07.4526 DE: -16 33 52.205 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .055, .032 ) * V mag [mag]: 11.1 * B mag [mag]: 0.0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1017) Jacqueline approx. diameter [km]: 38 approx. diameter ["]: .025 distance from Earth [AU]: 2.10400 * orbital information: orbit source: Preston date of fit: 2008 Mar 19 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 859 number of rejected observations: 49 time covered by the observations: 1928 Jan 29 - 2008 Feb 12 1 sigma uncertainty ellipse (major, minor, PA): 0.030, 0.016, 96° remarks: * orbital elements for (1017) Jacqueline : Mean anomaly = 61.09289115 deg Arg. of pericenter = 66.53257997 deg Long. of node = 119.14991366 deg Inclination = 7.93879390 deg Eccentricity = 0.07658346 Semimajor axis = 2.60537713 AU Perihelion dist = 2.40584834 AU Mag: H = 10.97, G = 0.15 Epoch of elements : MJD 54931.68200000 TDT (2009 Apr 10.682) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Apr 10 1017 Jacqueline 16h 21.3m UT 11.1 18 33 7.453-16 33 52.21UCAC2 25617770 0.0 15.6 38 3.5 2.104 1.752 2.91 -166.0750 -16.565 -65.02 8.17 16.3550 0.01965 -0.15928 6.03033 0.69546 -0.00544 -0.00045 2000 60.6986842009 4 9.00000 66.532580119.149914 7.9387940.07658346 2.6053771 2.405848310.9 5.00.15 RATE 2.3436790 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.063 0.036 91 2.45 0.036 0 54545.5020090410_617770 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 06:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org