IOTA/IOTA-ES occultation update for (16184) 2000 AD142 / HIP 8544 event on 2007 Nov 18, 08:05 UT Visible from USA, Mexico, near Hawaii Summary ------- On 2007 Nov 18 UT, the 10 km diameter asteroid (16184) 2000 AD142 will occult a 5.8 mag star in the constellation Aries for observers along a path across USA, Mexico, near Hawaii. In the case of an occultation, the combined light of the asteroid and the star will drop by 11.4 mag to 17.2 mag (the magnitude of the asteroid) for at most 0.8 seconds. This update is based on historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: . The event at a glimpse ---------------------- * Rank: 4 * date and approx. time of event: 2007 Nov 18, 07:56 - 2007 Nov 18, 08:14 UT * magnitude of target star: 5.8 * magnitude drop [mag]: 11.4 * estimated maximum duration [s]: 0.8 * Moon: 54 % sunlit, 64° distance * Sun: 156° distance * rough path description: USA, Mexico, near Hawaii Additional comments ------------------- 2.9" double star The occultation path -------------------- * approximate projected width [km]: 10 * 1 sigma uncertainty interval [path widths]: +/- 13.97 * 1 sigma uncertainty interval [seconds]: +/- 14.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .114 +/- .085) * 1 sigma uncertainty ellipse (major, minor, PA): ( .117", .081", 72° ) * approx speed of asteroid's shadow [km/s]: 11.9970 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 8544 by 16184 2000 AD142 on 2007 Nov 18 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 ' " Longitude Longitude Longitude Longitude ... .. .. -35 0 0 .. .. .. .. .. .. ... .. .. ... .. .. ... .. .. 134 0 19 ... .. .. -34 0 0 .. .. .. .. .. .. ... .. .. ... .. .. ... .. .. 136 15 6 135 10 41 -33 0 0 8 14 10 2 62 16 135 3 53 135 17 29 ... .. .. 138 22 40 137 19 42 -32 0 0 8 14 9 4 61 14 137 13 12 137 26 12 134 6 47 140 23 59 Latitude Latitude Latitude Latitude 138 0 0 -31 40 36 8 14 8 5 60 14 -31 37 29 -31 43 43 -30 10 27 -33 10 53 139 0 0 -31 11 8 8 14 8 6 60 13 -31 8 0 -31 14 16 -29 40 34 -32 41 50 140 0 0 -30 40 57 8 14 7 7 59 12 -30 37 48 -30 44 6 -29 9 58 -32 12 5 141 0 0 -30 10 4 8 14 5 8 59 11 -30 6 55 -30 13 14 -28 38 40 -31 41 38 142 0 0 -29 38 30 8 14 4 9 58 10 -29 35 19 -29 41 40 -28 6 40 -31 10 29 143 0 0 -29 6 12 8 14 3 10 58 9 -29 3 1 -29 9 24 -27 33 57 -30 38 38 144 0 0 -28 33 13 8 14 1 11 57 8 -28 30 1 -28 36 25 -27 0 33 -30 6 4 145 0 0 -27 59 32 8 13 59 12 57 7 -27 56 19 -28 2 45 -26 26 26 -29 32 48 146 0 0 -27 25 8 8 13 57 13 56 6 -27 21 54 -27 28 23 -25 51 38 -28 58 50 147 0 0 -26 50 3 8 13 55 14 56 5 -26 46 49 -26 53 18 -25 16 8 -28 24 10 148 0 0 -26 14 17 8 13 52 15 55 4 -26 11 1 -26 17 33 -24 39 57 -27 48 48 149 0 0 -25 37 49 8 13 50 16 55 3 -25 34 32 -25 41 6 -24 3 5 -27 12 45 150 0 0 -25 0 40 8 13 47 17 54 2 -24 57 23 -25 3 58 -23 25 32 -26 36 0 151 0 0 -24 22 51 8 13 44 18 54 1 -24 19 33 -24 26 10 -22 47 19 -25 58 35 152 0 0 -23 44 22 8 13 40 19 54 0 -23 41 3 -23 47 41 -22 8 27 -25 20 30 153 0 0 -23 5 14 8 13 37 20 53 -1 -23 1 54 -23 8 34 -21 28 56 -24 41 44 154 0 0 -22 25 27 8 13 33 22 53 -3 -22 22 6 -22 28 48 -20 48 47 -24 2 20 155 0 0 -21 45 2 8 13 29 23 53 -4 -21 41 41 -21 48 23 -20 8 0 -23 22 17 156 0 0 -21 4 0 8 13 25 24 52 -5 -21 0 37 -21 7 22 -19 26 36 -22 41 36 157 0 0 -20 22 21 8 13 21 25 52 -6 -20 18 58 -20 25 43 -18 44 37 -22 0 18 158 0 0 -19 40 6 8 13 16 26 51 -7 -19 36 43 -19 43 30 -18 2 2 -21 18 23 159 0 0 -18 57 17 8 13 11 27 51 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34 16 16 7 56 42 13 289 -32 34 19 7 34 13 25 35 38 32 32 53 52 - 58 0 0 33 59 55 7 56 40 12 289 -31 34 2 46 33 57 3 35 22 28 32 37 14 - 57 0 0 33 42 56 7 56 39 11 290 -30 33 45 48 33 40 4 35 5 47 32 19 57 - 56 0 0 33 25 18 7 56 37 10 290 -29 33 28 11 33 22 26 34 48 28 32 2 1 - 55 0 0 33 7 2 7 56 36 9 291 -28 33 9 55 33 4 9 34 30 31 31 43 26 - 54 0 0 32 48 7 7 56 35 8 291 -28 32 51 1 32 45 13 34 11 55 31 24 11 - 53 0 0 32 28 32 7 56 33 7 292 -27 32 31 27 32 25 38 33 52 40 31 4 16 - 52 0 0 32 8 18 7 56 32 6 292 -26 32 11 13 32 5 22 33 32 46 30 43 41 - 51 0 0 31 47 22 7 56 31 6 293 -25 31 50 18 31 44 26 33 12 12 30 22 24 - 50 0 0 31 25 46 7 56 31 5 293 -24 31 28 43 31 22 49 32 50 58 30 0 26 - 49 0 0 31 3 29 7 56 30 4 294 -23 31 6 26 31 0 31 32 29 2 29 37 47 - 48 0 0 30 40 30 7 56 30 3 294 -22 30 43 28 30 37 31 32 6 26 29 14 24 - 47 0 0 30 16 48 7 56 29 2 295 -21 30 19 47 30 13 49 31 43 8 28 50 20 - 46 0 0 29 52 24 7 56 29 1 295 -20 29 55 24 29 49 24 31 19 7 28 25 32 - 45 0 0 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 30 54 25 .. .. .. Data for the target star ------------------------ * name: HIP 8544 * constellation : Aries * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 01 50 08.5630 DE: +22 16 31.158 * position source: mpos:HIP pm:HIP plx:HIP * standard error: RA,DE ["]: ( .022, .015 ) * V mag [mag]: 5.8 * B mag [mag]: 6.6 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (16184) 2000 AD142 approx. diameter [km]: 10 approx. diameter ["]: .006 distance from Earth [AU]: 2.12200 * orbital information: orbit source: Preston date of fit: 2007 Oct 10 source of used astrometry: MPC (via Astdys) number of used observations: 424 number of rejected observations: 3 time covered by the observations: 1983 Jul 16 - 2007 Sep 25 1 sigma uncertainty ellipse (major, minor, PA): 0.115, 0.080, 71° remarks: * orbital elements for (16184) 2000 AD142 : Mean anomaly = 158.32449828 deg Arg. of pericenter = 315.29713748 deg Long. of node = 282.80142395 deg Inclination = 8.00508962 deg Eccentricity = 0.10260069 Semimajor axis = 2.78265367 AU Perihelion dist = 2.49715149 AU Mag: H = 12.69, G = 0.15 Epoch of elements : MJD 54422.33700000 TDT (2007 Nov 18.337) ------ occelmnt file for Occult BEGIN ----------------------------------- 2007 Nov 18 16184 2000 AD142 8h 5.3m UT 5.8 1 50 8.563 22 16 31.16HIP 8544 6.6 17.2 10 0.8 2.122 -1.666 -15.87 -150.790 22.280 54.94 -19.16 8.0888 .02422 -.03560 -5.58359 -3.83091 0.00246 -0.00010 2000 157.82827820071116.00000315.297137282.801424 8.0050900.102600692.782653672.4971514912.65 0.15 RATE 2.1233190 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.117 0.081 71.714.970 0.091 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2007 Nov 17, 22:48 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org