IOTA/IOTA-ES occultation update for (1286) Banachiewicza / HIP 3753 event on 2012 Sep 12, 01:07 UT Visible from Africa Summary ------- On 2012 Sep 12 UT, the 22 km diameter asteroid (1286) Banachiewicza will occult a 8.1 mag star in the constellation Pisces for observers along a path across Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 7.1 mag to 15.2 mag (the magnitude of the asteroid) for at most 2.2 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: . The event at a glimpse ---------------------- * Rank: 35 * date and approx. time of event: 2012 Sep 12, 01:00 - 2012 Sep 12, 01:16 UT * geocentric midpoint of event [JD]: 2456182.54705 * magnitude of target star: 8.1 * magnitude drop [mag]: 7.1 * estimated maximum duration [s]: 2.2 * Moon: 19 % sunlit, 104° distance * Sun: 155° distance * rough path description: Africa Additional comments ------------------- pm issue The occultation path -------------------- * approximate projected width [km]: 28 * 1 sigma uncertainty interval [path widths]: +/- 1.88 * 1 sigma uncertainty interval [seconds]: +/- 5.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .044 +/- .027) * 1 sigma uncertainty ellipse (major, minor, PA): ( .044", .026", 79° ) * approx speed of asteroid's shadow [km/s]: 9.9842 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 3753 by 1286 Banachiewicza on 2012 Sep 12 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 - 53 41 25 -71 0 0 1 16 8 2 54 -20 - 54 22 44 - 53 0 32 ... .. .. - 50 30 34 - 49 30 20 -70 0 0 1 16 7 3 51 -21 - 50 7 15 - 48 53 45 - 52 29 2 - 46 38 43 Latitude Latitude Latitude Latitude - 49 0 0 -69 52 9 1 16 6 4 50 -22 -69 42 41 -70 1 38 -69 7 21 -70 37 30 - 48 0 0 -69 36 13 1 16 6 4 49 -22 -69 26 41 -69 45 46 -68 51 4 -70 21 57 - 47 0 0 -69 19 44 1 16 5 5 48 -22 -69 10 8 -69 29 22 -68 34 13 -70 5 51 - 46 0 0 -69 2 42 1 16 5 5 47 -23 -68 53 0 -69 12 25 -68 16 49 -69 49 11 - 45 0 0 -68 45 4 1 16 4 6 46 -23 -68 35 18 -68 54 52 -67 58 49 -69 31 57 - 44 0 0 -68 26 51 1 16 4 6 45 -24 -68 17 1 -68 36 44 -67 40 14 -69 14 8 - 43 0 0 -68 8 2 1 16 3 6 44 -24 -67 58 6 -68 17 59 -67 21 2 -68 55 42 - 42 0 0 -67 48 35 1 16 2 7 44 -25 -67 38 34 -67 58 37 -67 1 11 -68 36 38 - 41 0 0 -67 28 29 1 16 1 7 43 -25 -67 18 23 -67 38 36 -66 40 43 -68 16 56 - 40 0 0 -67 7 43 1 16 0 8 42 -25 -66 57 33 -67 17 55 -66 19 34 -67 56 35 - 39 0 0 -66 46 17 1 15 59 8 41 -26 -66 36 2 -66 56 34 -65 57 45 -67 35 33 - 38 0 0 -66 24 9 1 15 58 9 40 -26 -66 13 49 -66 34 32 -65 35 15 -67 13 49 - 37 0 0 -66 1 19 1 15 57 10 39 -27 -65 50 54 -66 11 46 -65 12 1 -66 51 23 - 36 0 0 -65 37 45 1 15 55 10 38 -27 -65 27 15 -65 48 17 -64 48 5 -66 28 13 - 35 0 0 -65 13 27 1 15 54 11 37 -28 -65 2 52 -65 24 4 -64 23 24 -66 4 18 - 34 0 0 -64 48 23 1 15 52 11 36 -28 -64 37 44 -64 59 5 -63 57 58 -65 39 38 - 33 0 0 -64 22 33 1 15 51 12 35 -29 -64 11 49 -64 33 20 -63 31 46 -65 14 11 - 32 0 0 -63 55 56 1 15 49 13 34 -30 -63 45 7 -64 6 47 -63 4 47 -64 47 57 - 31 0 0 -63 28 31 1 15 47 13 33 -30 -63 17 38 -63 39 27 -62 37 1 -64 20 54 - 30 0 0 -63 0 17 1 15 45 14 32 -31 -62 49 19 -63 11 18 -62 8 26 -63 53 2 - 29 0 0 -62 31 14 1 15 42 14 32 -31 -62 20 12 -62 42 19 -61 39 3 -63 24 20 - 28 0 0 -62 1 21 1 15 40 15 31 -32 -61 50 14 -62 12 30 -61 8 50 -62 54 48 - 27 0 0 -61 30 37 1 15 37 16 30 -32 -61 19 26 -61 41 50 -60 37 47 -62 24 24 - 26 0 0 -60 59 2 1 15 35 16 29 -33 -60 47 48 -61 10 19 -60 5 54 -61 53 8 - 25 0 0 -60 26 36 1 15 32 17 28 -34 -60 15 18 -60 37 56 -59 33 11 -61 21 0 - 24 0 0 -59 53 18 1 15 29 18 27 -34 -59 41 56 -60 4 42 -58 59 36 -60 47 59 - 23 0 0 -59 19 8 1 15 25 19 26 -35 -59 7 43 -59 30 35 -58 25 11 -60 14 6 - 22 0 0 -58 44 6 1 15 22 19 25 -35 -58 32 38 -58 55 37 -57 49 55 -59 39 19 - 21 0 0 -58 8 12 1 15 18 20 24 -36 -57 56 41 -58 19 46 -57 13 48 -59 3 40 - 20 0 0 -57 31 27 1 15 14 21 23 -37 -57 19 54 -57 43 3 -56 36 51 -58 27 7 - 19 0 0 -56 53 51 1 15 10 22 22 -37 -56 42 15 -57 5 29 -55 59 4 -57 49 42 - 18 0 0 -56 15 23 1 15 5 22 21 -38 -56 3 45 -56 27 4 -55 20 27 -57 11 25 - 17 0 0 -55 36 6 1 15 1 23 21 -39 -55 24 26 -55 47 48 -54 41 1 -56 32 17 - 16 0 0 -54 55 59 1 14 56 24 20 -39 -54 44 18 -55 7 43 -54 0 48 -55 52 18 - 15 0 0 -54 15 4 1 14 50 25 19 -40 -54 3 22 -54 26 49 -53 19 47 -55 11 28 - 14 0 0 -53 33 22 1 14 45 26 18 -40 -53 21 39 -53 45 8 -52 38 1 -54 29 51 - 13 0 0 -52 50 53 1 14 39 27 17 -41 -52 39 10 -53 2 40 -51 55 29 -53 47 25 - 12 0 0 -52 7 40 1 14 33 28 16 -42 -51 55 56 -52 19 27 -51 12 15 -53 4 13 - 11 0 0 -51 23 44 1 14 27 28 15 -42 -51 12 0 -51 35 31 -50 28 19 -52 20 17 - 10 0 0 -50 39 7 1 14 21 29 14 -43 -50 27 23 -50 50 53 -49 43 43 -51 35 38 - 9 0 0 -49 53 49 1 14 14 30 13 -43 -49 42 6 -50 5 35 -48 58 29 -50 50 18 - 8 0 0 -49 7 54 1 14 7 31 12 -44 -48 56 12 -49 19 40 -48 12 38 -50 4 18 - 7 0 0 -48 21 24 1 13 59 32 11 -45 -48 9 43 -48 33 8 -47 26 14 -49 17 42 - 6 0 0 -47 34 20 1 13 52 33 10 -45 -47 22 41 -47 46 2 -46 39 17 -48 30 30 - 5 0 0 -46 46 45 1 13 44 34 9 -46 -46 35 7 -46 58 25 -45 51 50 -47 42 46 - 4 0 0 -45 58 41 1 13 35 35 8 -46 -45 47 6 -46 10 20 -45 3 56 -46 54 32 - 3 0 0 -45 10 11 1 13 27 35 7 -47 -44 58 38 -45 21 47 -44 15 36 -46 5 51 - 2 0 0 -44 21 17 1 13 18 36 5 -47 -44 9 46 -44 32 50 -43 26 54 -45 16 44 - 1 0 0 -43 32 1 1 13 9 37 4 -47 -43 20 34 -43 43 32 -42 37 52 -44 27 15 0 0 0 -42 42 27 1 13 0 38 3 -48 -42 31 2 -42 53 55 -41 48 32 -43 37 26 1 0 0 -41 52 37 1 12 50 39 2 -48 -41 41 16 -42 4 1 -40 58 57 -42 47 19 2 0 0 -41 2 33 1 12 40 40 1 -49 -40 51 15 -41 13 54 -40 9 9 -41 56 59 3 0 0 -40 12 19 1 12 30 41 360 -49 -40 1 5 -40 23 36 -39 19 11 -41 6 27 4 0 0 -39 21 57 1 12 20 41 358 -49 -39 10 46 -39 33 10 -38 29 6 -40 15 46 5 0 0 -38 31 28 1 12 9 42 357 -49 -38 20 22 -38 42 38 -37 38 56 -39 24 59 6 0 0 -37 40 57 1 11 59 43 356 -49 -37 29 55 -37 52 3 -36 48 44 -38 34 8 7 0 0 -36 50 26 1 11 48 44 354 -50 -36 39 27 -37 1 27 -35 58 32 -37 43 16 8 0 0 -35 59 57 1 11 36 45 353 -50 -35 49 3 -36 10 54 -35 8 23 -36 52 26 9 0 0 -35 9 33 1 11 25 45 351 -50 -34 58 42 -35 20 25 -34 18 18 -36 1 40 10 0 0 -34 19 15 1 11 14 46 350 -50 -34 8 29 -34 30 3 -33 28 22 -35 11 1 11 0 0 -33 29 7 1 11 2 47 348 -50 -33 18 26 -33 39 51 -32 38 35 -34 20 31 12 0 0 -32 39 11 1 10 50 47 347 -50 -32 28 34 -32 49 50 -31 48 59 -33 30 12 13 0 0 -31 49 28 1 10 38 48 345 -49 -31 38 56 -32 0 3 -30 59 38 -32 40 7 14 0 0 -31 0 2 1 10 26 48 344 -49 -30 49 35 -31 10 32 -30 10 34 -31 50 19 15 0 0 -30 10 54 1 10 14 49 342 -49 -30 0 31 -30 21 19 -29 21 47 -31 0 48 16 0 0 -29 22 6 1 10 1 50 340 -49 -29 11 48 -29 32 26 -28 33 21 -30 11 37 17 0 0 -28 33 40 1 9 49 50 339 -48 -28 23 26 -28 43 55 -27 45 16 -29 22 48 18 0 0 -27 45 38 1 9 36 50 337 -48 -27 35 29 -27 55 48 -26 57 36 -28 34 23 19 0 0 -26 58 1 1 9 24 51 335 -48 -26 47 56 -27 8 7 -26 10 20 -27 46 24 20 0 0 -26 10 51 1 9 11 51 333 -47 -26 0 51 -26 20 53 -25 23 32 -26 58 52 21 0 0 -25 24 10 1 8 58 51 332 -47 -25 14 15 -25 34 7 -24 37 13 -26 11 48 22 0 0 -24 38 0 1 8 46 52 330 -46 -24 28 9 -24 47 52 -23 51 23 -25 25 16 23 0 0 -23 52 21 1 8 33 52 328 -46 -23 42 34 -24 2 9 -23 6 5 -24 39 15 24 0 0 -23 7 15 1 8 20 52 326 -45 -22 57 33 -23 16 58 -22 21 20 -23 53 47 25 0 0 -22 22 43 1 8 8 52 324 -45 -22 13 5 -22 32 22 -21 37 9 -23 8 54 26 0 0 -21 38 46 1 7 55 52 322 -44 -21 29 13 -21 48 21 -20 53 32 -22 24 36 27 0 0 -20 55 26 1 7 42 52 321 -43 -20 45 57 -21 4 56 -20 10 32 -21 40 55 28 0 0 -20 12 43 1 7 29 52 319 -43 -20 3 19 -20 22 9 -19 28 9 -20 57 51 29 0 0 -19 30 39 1 7 17 52 317 -42 -19 21 18 -19 40 1 -18 46 24 -20 15 27 30 0 0 -18 49 14 1 7 4 52 315 -41 -18 39 57 -18 58 31 -18 5 18 -19 33 42 31 0 0 -18 8 29 1 6 52 52 314 -40 -17 59 16 -18 17 42 -17 24 52 -18 52 37 32 0 0 -17 28 24 1 6 39 52 312 -40 -17 19 16 -17 37 34 -16 45 6 -18 12 14 33 0 0 -16 49 2 1 6 27 51 310 -39 -16 39 57 -16 58 8 -16 6 2 -17 32 32 34 0 0 -16 10 21 1 6 15 51 309 -38 -16 1 20 -16 19 23 -15 27 39 -16 53 33 35 0 0 -15 32 23 1 6 3 51 307 -37 -15 23 26 -15 41 22 -14 49 59 -16 15 17 36 0 0 -14 55 9 1 5 51 50 306 -36 -14 46 15 -15 4 3 -14 13 1 -15 37 45 37 0 0 -14 18 38 1 5 39 50 304 -36 -14 9 48 -14 27 29 -13 36 47 -15 0 57 38 0 0 -13 42 52 1 5 27 50 303 -35 -13 34 5 -13 51 39 -13 1 17 -14 24 54 39 0 0 -13 7 50 1 5 15 49 301 -34 -12 59 7 -13 16 34 -12 26 31 -13 49 35 40 0 0 -12 33 33 1 5 4 49 300 -33 -12 24 53 -12 42 13 -11 52 29 -13 15 2 41 0 0 -12 0 1 1 4 52 48 299 -32 -11 51 24 -12 8 38 -11 19 13 -12 41 15 42 0 0 -11 27 15 1 4 41 47 298 -31 -11 18 41 -11 35 49 -10 46 42 -12 8 13 43 0 0 -10 55 14 1 4 30 47 296 -30 -10 46 44 -11 3 45 -10 14 56 -11 35 58 44 0 0 -10 24 0 1 4 19 46 295 -29 -10 15 33 -10 32 28 - 9 43 55 -11 4 29 45 0 0 - 9 53 32 1 4 8 46 294 -28 - 9 45 8 -10 1 57 - 9 13 41 -10 33 47 46 0 0 - 9 23 50 1 3 57 45 293 -27 - 9 15 29 - 9 32 12 - 8 44 12 -10 3 51 47 0 0 - 8 54 55 1 3 47 44 292 -26 - 8 46 36 - 9 3 14 - 8 15 30 - 9 34 42 48 0 0 - 8 26 46 1 3 37 44 291 -25 - 8 18 30 - 8 35 3 - 7 47 34 - 9 6 21 49 0 0 - 7 59 24 1 3 27 43 291 -25 - 7 51 11 - 8 7 39 - 7 20 24 - 8 38 46 50 0 0 - 7 32 49 1 3 17 42 290 -24 - 7 24 38 - 7 41 1 - 6 54 1 - 8 11 59 51 0 0 - 7 7 1 1 3 7 41 289 -23 - 6 58 52 - 7 15 10 - 6 28 24 - 7 45 59 52 0 0 - 6 41 59 1 2 57 41 288 -22 - 6 33 53 - 6 50 6 - 6 3 34 - 7 20 46 53 0 0 - 6 17 45 1 2 48 40 288 -21 - 6 9 41 - 6 25 50 - 5 39 30 - 6 56 21 54 0 0 - 5 54 17 1 2 39 39 287 -20 - 5 46 16 - 6 2 20 - 5 16 13 - 6 32 43 55 0 0 - 5 31 37 1 2 30 38 286 -19 - 5 23 37 - 5 39 37 - 4 53 42 - 6 9 52 56 0 0 - 5 9 43 1 2 21 37 286 -18 - 5 1 46 - 5 17 42 - 4 31 58 - 5 47 49 57 0 0 - 4 48 37 1 2 12 37 285 -17 - 4 40 41 - 4 56 33 - 4 11 1 - 5 26 33 58 0 0 - 4 28 17 1 2 4 36 285 -16 - 4 20 23 - 4 36 11 - 3 50 50 - 5 6 4 59 0 0 - 4 8 44 1 1 55 35 284 -15 - 4 0 52 - 4 16 37 - 3 31 25 - 4 46 22 60 0 0 - 3 49 58 1 1 47 34 284 -14 - 3 42 8 - 3 57 49 - 3 12 47 - 4 27 28 61 0 0 - 3 31 59 1 1 39 33 283 -13 - 3 24 10 - 3 39 48 - 2 54 56 - 4 9 21 62 0 0 - 3 14 47 1 1 32 32 283 -12 - 3 7 0 - 3 22 34 - 2 37 51 - 3 52 1 63 0 0 - 2 58 21 1 1 24 31 283 -11 - 2 50 35 - 3 6 7 - 2 21 32 - 3 35 28 64 0 0 - 2 42 42 1 1 17 30 282 -10 - 2 34 58 - 2 50 27 - 2 6 0 - 3 19 43 65 0 0 - 2 27 50 1 1 10 30 282 -9 - 2 20 7 - 2 35 34 - 1 51 14 - 3 4 44 66 0 0 - 2 13 45 1 1 3 29 282 -8 - 2 6 3 - 2 21 27 - 1 37 15 - 2 50 33 67 0 0 - 2 0 26 1 0 56 28 282 -7 - 1 52 46 - 2 8 7 - 1 24 2 - 2 37 9 68 0 0 - 1 47 54 1 0 50 27 281 -6 - 1 40 15 - 1 55 34 - 1 11 35 - 2 24 31 69 0 0 - 1 36 9 1 0 44 26 281 -5 - 1 28 30 - 1 43 48 - 0 59 54 - 2 12 41 70 0 0 - 1 25 10 1 0 38 25 281 -4 - 1 17 33 - 1 32 48 - 0 49 0 - 2 1 38 71 0 0 - 1 14 58 1 0 32 24 281 -3 - 1 7 21 - 1 22 35 - 0 38 52 - 1 51 22 72 0 0 - 1 5 32 1 0 26 23 281 -2 - 0 57 57 - 1 13 9 - 0 29 30 - 1 41 52 73 0 0 - 0 56 53 1 0 21 22 280 -1 - 0 49 18 - 1 4 29 - 0 20 55 - 1 33 10 74 0 0 - 0 49 1 1 0 16 21 280 0 - 0 41 27 - 0 56 36 - 0 13 5 - 1 25 15 Uncertainty in time = +/- 6 secs Prediction of 2012 Apr 8.0 Data for the target star ------------------------ * name: HIP 3753 * constellation : Pisces * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 00 48 10.7801 DE: +09 13 17.680 * position source: mpos:HIP2 pm:HIP2 plx:HIP2 * standard error: RA,DE ["]: ( .016, .011 ) * V mag [mag]: 8.1 * B mag [mag]: 8.4 * Apparent position with proper motion RA(deg): 12.2190745633 DE(deg): 9.2939848214 * Equation of equinoxes (radians) : 0.000068768125690 * Diameter [mas]: 0 * remarks:pm issue Data for the minor planet ------------------------- * general information: (number) name: (1286) Banachiewicza approx. diameter [km]: 22 approx. diameter ["]: .016 distance from Earth [AU]: 1.93600 * orbital information: orbit source: Preston date of fit: 2012 Apr 08 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 952 number of rejected observations: 54 time covered by the observations: 1928 Sep 22 - 2011 Aug 12 1 sigma uncertainty ellipse (major, minor, PA): 0.041, 0.024, 77° remarks: * orbital elements for (1286) Banachiewicza : Mean anomaly = 52.61669428 deg Arg. of pericenter = 103.85101529 deg Long. of node = 200.89982334 deg Inclination = 9.74053530 deg Eccentricity = 0.08784648 Semimajor axis = 3.02226313 AU Perihelion dist = 2.75676795 AU Mag: H = 10.81, G = 0.15 Epoch of elements : MJD 56182.04700000 TDT (2012 Sep 12.047) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Sep 12 1286 Banachiewicza 1h 7.7m UT 8.1 0 48 10.780 9 13 17.68HIP 3753 8.4 15.2 22 2.2 1.936 -1.391 -15.23 3.6569 9.225 162.13 4.08 1.1292 0.36366 -0.49180 -4.53093 -3.35085 -0.00213 -0.00126 2000 52.2327012012 910.00000103.851015200.899823 9.7405350.08784648 3.0222631 2.756768010.9 5.00.15 RATE 1.8758820 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.044 0.026 79 2.88 0.030 0 0 1 0 056025.0020120912___3753 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Jul 20, 04:51 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org