IOTA/IOTA-ES occultation update for (5133) Phillipadams / TYC 7496-00784-1 event on 2012 Sep 30, 23:25 UT Visible from Africa Summary ------- On 2012 Sep 30 UT, the 23 km diameter asteroid (5133) Phillipadams will occult a 9.5 mag star in the constellation Piscis Austrinus 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 5.3 mag to 14.8 mag (the magnitude of the asteroid) for at most 7.1 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: 17 * date and approx. time of event: 2012 Sep 30, 23:04 - 2012 Sep 30, 23:46 UT * geocentric midpoint of event [JD]: 2456201.4762 * magnitude of target star: 9.5 * magnitude drop [mag]: 5.3 * estimated maximum duration [s]: 7.1 * Moon: 99 % sunlit, 57° distance * Sun: 133° distance * rough path description: Africa The occultation path -------------------- * approximate projected width [km]: 36 * 1 sigma uncertainty interval [path widths]: +/- 3.93 * 1 sigma uncertainty interval [seconds]: +/- 20.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .101 +/- .062) * 1 sigma uncertainty ellipse (major, minor, PA): ( .102", .060", 78° ) * approx speed of asteroid's shadow [km/s]: 3.2192 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7496-00784-1 by 5133 Phillipadams on 2012 Sep 30 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 - 6 19 27 56 0 0 23 46 21 0 202 -37 - 5 59 21 - 6 39 25 ... .. .. ... .. .. - 6 59 35 55 0 0 23 46 21 1 201 -38 - 6 40 13 - 7 18 51 - 4 3 52 ... .. .. - 7 34 44 54 0 0 23 46 19 2 201 -39 - 7 16 0 - 7 53 22 - 4 45 6 ... .. .. - 8 5 22 53 0 0 23 46 16 3 201 -40 - 7 47 14 - 8 23 26 - 5 21 12 ... .. .. - 8 31 54 52 0 0 23 46 12 5 200 -41 - 8 14 17 - 8 49 26 - 5 52 39 ... .. .. - 8 54 41 51 0 0 23 46 7 6 200 -42 - 8 37 32 - 9 11 44 - 6 19 53 ... .. .. - 9 14 0 50 0 0 23 46 2 7 200 -43 - 8 57 18 - 9 30 38 - 6 43 16 ... .. .. - 9 30 8 49 0 0 23 45 55 8 199 -43 - 9 13 49 - 9 46 22 - 7 3 5 - 11 51 41 - 9 43 17 48 0 0 23 45 47 9 199 -44 - 9 27 21 - 9 59 10 - 7 19 37 - 12 1 45 - 9 53 41 47 0 0 23 45 39 10 199 -45 - 9 38 5 - 10 9 14 - 7 33 6 - 12 9 19 - 10 1 29 46 0 0 23 45 29 11 199 -46 - 9 46 11 - 10 16 43 - 7 43 44 - 12 14 30 - 10 6 50 45 0 0 23 45 19 12 199 -47 - 9 51 49 - 10 21 48 - 7 51 42 - 12 17 27 - 10 9 53 44 0 0 23 45 8 12 199 -48 - 9 55 8 - 10 24 35 - 7 57 8 - 12 18 17 - 10 10 45 43 0 0 23 44 55 13 199 -49 - 9 56 14 - 10 25 13 - 8 0 12 - 12 17 6 - 10 9 32 42 0 0 23 44 42 14 199 -50 - 9 55 14 - 10 23 46 - 8 1 0 - 12 14 0 - 10 6 19 41 0 0 23 44 29 15 199 -51 - 9 52 13 - 10 20 21 - 7 59 39 - 12 9 3 - 10 1 12 40 0 0 23 44 14 16 199 -52 - 9 47 17 - 10 15 3 - 7 56 14 - 12 2 20 - 9 54 14 39 0 0 23 43 58 17 199 -53 - 9 40 30 - 10 7 55 - 7 50 50 - 11 53 54 - 9 45 31 38 0 0 23 43 42 18 200 -54 - 9 31 56 - 9 59 2 - 7 43 32 - 11 43 50 - 9 35 4 37 0 0 23 43 24 19 200 -55 - 9 21 38 - 9 48 27 - 7 34 23 - 11 32 9 - 9 22 57 36 0 0 23 43 6 20 200 -56 - 9 9 39 - 9 36 13 - 7 23 27 - 11 18 55 - 9 9 13 35 0 0 23 42 47 21 200 -57 - 8 56 2 - 9 22 21 - 7 10 47 - 11 4 10 - 8 53 53 34 0 0 23 42 27 22 201 -58 - 8 40 48 - 9 6 55 - 6 56 24 - 10 47 55 - 8 37 0 33 0 0 23 42 6 23 201 -59 - 8 24 1 - 8 49 57 - 6 40 22 - 10 30 13 - 8 18 35 32 0 0 23 41 45 23 201 -60 - 8 5 41 - 8 31 26 - 6 22 42 - 10 11 4 - 7 58 38 31 0 0 23 41 22 24 202 -61 - 7 45 49 - 8 11 26 - 6 3 24 - 9 50 30 - 7 37 12 30 0 0 23 40 59 25 202 -62 - 7 24 26 - 7 49 56 - 5 42 31 - 9 28 31 - 7 14 17 29 0 0 23 40 35 26 202 -63 - 7 1 34 - 7 26 57 - 5 20 3 - 9 5 8 - 6 49 52 28 0 0 23 40 10 27 203 -64 - 6 37 12 - 7 2 30 - 4 56 0 - 8 40 21 - 6 23 58 27 0 0 23 39 44 28 203 -65 - 6 11 20 - 6 36 35 - 4 30 22 - 8 14 11 - 5 56 36 26 0 0 23 39 17 28 204 -66 - 5 43 58 - 6 9 11 - 4 3 10 - 7 46 36 - 5 27 43 25 0 0 23 38 49 29 204 -67 - 5 15 7 - 5 40 18 - 3 34 22 - 7 17 37 - 4 57 21 24 0 0 23 38 21 30 205 -68 - 4 44 44 - 5 9 55 - 3 3 58 - 6 47 13 - 4 25 27 23 0 0 23 37 51 31 206 -69 - 4 12 49 - 4 38 1 - 2 31 57 - 6 15 23 - 3 52 0 22 0 0 23 37 21 31 206 -70 - 3 39 21 - 4 4 36 - 1 58 17 - 5 42 6 - 3 16 59 21 0 0 23 36 50 32 207 -71 - 3 4 18 - 3 29 37 - 1 22 57 - 5 7 20 - 2 40 22 20 0 0 23 36 18 33 208 -72 - 2 27 38 - 2 53 2 - 0 45 54 - 4 31 3 - 2 2 6 19 0 0 23 35 45 33 208 -73 - 1 49 19 - 2 14 49 - 0 7 5 - 3 53 15 - 1 22 8 18 0 0 23 35 11 34 209 -75 - 1 9 18 - 1 34 56 0 33 32 - 3 13 51 - 0 40 27 17 0 0 23 34 36 35 210 -76 - 0 27 31 - 0 53 20 1 16 2 - 2 32 49 0 3 3 16 0 0 23 34 1 35 211 -77 0 16 4 - 0 9 56 2 0 27 - 1 50 7 0 48 24 15 0 0 23 33 24 36 212 -78 1 1 33 0 35 19 2 46 54 - 1 5 41 1 35 43 14 0 0 23 32 46 36 213 -79 1 48 59 1 22 30 3 35 26 - 0 19 26 2 25 3 13 0 0 23 32 8 37 214 -80 2 38 28 2 11 42 4 26 12 0 28 42 3 16 32 12 0 0 23 31 28 37 215 -81 3 30 7 3 3 0 5 19 17 1 18 49 4 10 16 11 0 0 23 30 47 38 216 -82 4 24 2 3 56 33 6 14 51 2 11 0 5 6 23 10 0 0 23 30 5 38 217 -83 5 20 23 4 52 27 7 13 2 3 5 22 6 5 2 9 0 0 23 29 22 38 218 -84 6 19 17 5 50 52 8 14 2 4 2 3 7 6 25 8 0 0 23 28 38 39 219 -85 7 20 56 6 51 59 9 18 5 5 1 12 8 10 43 7 0 0 23 27 53 39 220 -85 8 25 33 7 55 59 10 25 25 6 2 58 9 18 12 6 0 0 23 27 6 39 221 -85 9 33 23 9 3 6 11 36 20 7 7 36 10 29 8 5 0 0 23 26 18 39 222 -85 10 44 44 10 13 38 12 51 15 8 15 17 11 43 52 4 0 0 23 25 28 39 224 -84 11 59 56 11 27 55 14 10 34 9 26 18 13 2 50 3 0 0 23 24 37 39 225 -83 13 19 26 12 46 21 15 34 52 10 40 59 14 26 31 2 0 0 23 23 44 39 226 -82 14 43 45 14 9 26 17 4 51 11 59 44 15 55 35 1 0 0 23 22 49 39 228 -81 16 13 34 15 37 46 18 41 27 13 23 1 17 30 51 0 0 0 23 21 52 38 229 -79 17 49 44 17 12 10 20 25 52 14 51 25 19 13 24 - 1 0 0 23 20 52 38 230 -77 19 33 23 18 53 39 22 19 48 16 25 41 Latitude Latitude Latitude Latitude 20 0 0 - 1 25 46 23 20 26 38 231 -76 - 1 14 40 - 1 36 49 0 14 24 - 3 2 4 21 0 0 - 1 57 35 23 19 52 37 231 -76 - 1 46 36 - 2 8 31 - 0 18 34 - 3 32 53 22 0 0 - 2 27 56 23 19 19 37 232 -75 - 2 17 4 - 2 38 45 - 0 49 58 - 4 2 16 23 0 0 - 2 56 49 23 18 47 36 233 -74 - 2 46 4 - 3 7 32 - 1 19 51 - 4 30 17 24 0 0 - 3 24 19 23 18 15 36 233 -73 - 3 13 39 - 3 34 56 - 1 48 16 - 4 56 57 25 0 0 - 3 50 25 23 17 44 36 234 -72 - 3 39 51 - 4 0 57 - 2 15 13 - 5 22 17 26 0 0 - 4 15 10 23 17 13 35 234 -71 - 4 4 41 - 4 25 37 - 2 40 45 - 5 46 20 27 0 0 - 4 38 35 23 16 43 35 235 -70 - 4 28 11 - 4 48 57 - 3 4 54 - 6 9 6 28 0 0 - 5 0 42 23 16 14 34 235 -69 - 4 50 22 - 5 11 0 - 3 27 41 - 6 30 36 29 0 0 - 5 21 31 23 15 45 34 236 -68 - 5 11 15 - 5 31 45 - 3 49 8 - 6 50 52 30 0 0 - 5 41 5 23 15 17 33 236 -67 - 5 30 52 - 5 51 15 - 4 9 15 - 7 9 55 31 0 0 - 5 59 23 23 14 49 33 237 -66 - 5 49 14 - 6 9 30 - 4 28 4 - 7 27 45 32 0 0 - 6 16 27 23 14 22 32 237 -65 - 6 6 21 - 6 26 31 - 4 45 36 - 7 44 24 33 0 0 - 6 32 17 23 13 56 31 237 -64 - 6 22 14 - 6 42 18 - 5 1 51 - 7 59 51 34 0 0 - 6 46 55 23 13 30 31 238 -63 - 6 36 54 - 6 56 54 - 5 16 51 - 8 14 9 35 0 0 - 7 0 21 23 13 4 30 238 -62 - 6 50 22 - 7 10 17 - 5 30 36 - 8 27 17 36 0 0 - 7 12 34 23 12 40 29 238 -61 - 7 2 37 - 7 22 29 - 5 43 7 - 8 39 15 37 0 0 - 7 23 37 23 12 15 29 238 -60 - 7 13 42 - 7 33 31 - 5 54 24 - 8 50 4 38 0 0 - 7 33 29 23 11 52 28 239 -60 - 7 23 35 - 7 43 21 - 6 4 28 - 8 59 45 39 0 0 - 7 42 10 23 11 28 27 239 -59 - 7 32 17 - 7 52 1 - 6 13 18 - 9 8 18 40 0 0 - 7 49 41 23 11 6 27 239 -58 - 7 39 48 - 7 59 31 - 6 20 55 - 9 15 42 41 0 0 - 7 56 1 23 10 44 26 239 -57 - 7 46 8 - 8 5 51 - 6 27 19 - 9 21 58 42 0 0 - 8 1 10 23 10 22 25 239 -56 - 7 51 18 - 8 11 0 - 6 32 30 - 9 27 6 43 0 0 - 8 5 9 23 10 1 25 239 -55 - 7 55 17 - 8 14 59 - 6 36 28 - 9 31 6 44 0 0 - 8 7 57 23 9 41 24 240 -54 - 7 58 4 - 8 17 47 - 6 39 12 - 9 33 57 45 0 0 - 8 9 33 23 9 21 23 240 -53 - 7 59 40 - 8 19 24 - 6 40 42 - 9 35 39 46 0 0 - 8 9 58 23 9 2 22 240 -52 - 8 0 4 - 8 19 50 - 6 40 58 - 9 36 11 47 0 0 - 8 9 11 23 8 43 21 240 -52 - 7 59 16 - 8 19 4 - 6 40 0 - 9 35 34 48 0 0 - 8 7 11 23 8 25 21 240 -51 - 7 57 14 - 8 17 5 - 6 37 45 - 9 33 47 49 0 0 - 8 3 57 23 8 8 20 240 -50 - 7 53 58 - 8 13 54 - 6 34 14 - 9 30 49 50 0 0 - 7 59 29 23 7 51 19 240 -49 - 7 49 28 - 8 9 28 - 6 29 26 - 9 26 39 51 0 0 - 7 53 45 23 7 35 18 240 -48 - 7 43 42 - 8 3 46 - 6 23 19 - 9 21 16 52 0 0 - 7 46 45 23 7 20 17 240 -47 - 7 36 39 - 7 56 49 - 6 15 52 - 9 14 40 53 0 0 - 7 38 27 23 7 5 16 240 -46 - 7 28 18 - 7 48 34 - 6 7 4 - 9 6 48 54 0 0 - 7 28 50 23 6 50 15 240 -46 - 7 18 37 - 7 39 1 - 5 56 54 - 8 57 41 55 0 0 - 7 17 52 23 6 37 15 240 -45 - 7 7 35 - 7 28 7 - 5 45 19 - 8 47 16 56 0 0 - 7 5 32 23 6 24 14 240 -44 - 6 55 11 - 7 15 51 - 5 32 18 - 8 35 32 57 0 0 - 6 51 47 23 6 12 13 240 -43 - 6 41 21 - 7 2 10 - 5 17 48 - 8 22 27 58 0 0 - 6 36 36 23 6 0 12 240 -42 - 6 26 4 - 6 47 4 - 5 1 48 - 8 8 0 59 0 0 - 6 19 55 23 5 50 11 239 -41 - 6 9 18 - 6 30 30 - 4 44 13 - 7 52 7 60 0 0 - 6 1 44 23 5 40 10 239 -40 - 5 51 0 - 6 12 24 - 4 25 3 - 7 34 48 61 0 0 - 5 41 58 23 5 31 9 239 -39 - 5 31 8 - 5 52 45 - 4 4 13 - 7 15 59 62 0 0 - 5 20 35 23 5 23 8 239 -38 - 5 9 37 - 5 31 29 - 3 41 40 - 6 55 38 63 0 0 - 4 57 31 23 5 15 7 239 -38 - 4 46 25 - 5 8 33 - 3 17 20 .. .. .. 64 0 0 - 4 32 42 23 5 9 6 239 -37 - 4 21 28 - 4 43 54 - 2 51 8 .. .. .. 65 0 0 - 4 6 5 23 5 3 5 239 -36 - 3 54 41 - 4 17 26 - 2 23 1 .. .. .. 66 0 0 - 3 37 35 23 4 59 4 239 -35 - 3 26 0 - 3 49 6 - 1 52 51 .. .. .. 67 0 0 - 3 7 6 23 4 56 3 239 -34 - 2 55 20 - 3 18 48 - 1 20 35 .. .. .. 68 0 0 - 2 34 33 23 4 54 1 239 -33 - 2 22 35 - 2 46 28 - 0 46 4 .. .. .. 69 0 0 - 1 59 50 23 4 53 0 239 -32 - 1 47 38 - 2 11 58 .. .. .. .. .. .. Uncertainty in time = +/- 30 secs Prediction of 2012 Aug 26.0 Data for the target star ------------------------ * name: TYC 7496-00784-1 * constellation : Piscis Austrinus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 22 17 03.2917 DE: -31 09 30.820 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .022, .024 ) * V mag [mag]: 9.5 * B mag [mag]: 10.0 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (5133) Phillipadams approx. diameter [km]: 23 approx. diameter ["]: .024 distance from Earth [AU]: 1.32600 * orbital information: orbit source: Preston date of fit: 2012 Aug 25 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 831 number of rejected observations: 10 time covered by the observations: 1953 Jun 14 - 2012 Aug 13 1 sigma uncertainty ellipse (major, minor, PA): 0.100, 0.055, 77° remarks: * orbital elements for (5133) Phillipadams : Mean anomaly = 345.16932778 deg Arg. of pericenter = 280.08993187 deg Long. of node = 87.67551519 deg Inclination = 12.02396120 deg Eccentricity = 0.22269184 Semimajor axis = 2.71303434 AU Perihelion dist = 2.10886374 AU Mag: H = 11.92, G = 0.15 Epoch of elements : MJD 56200.97600000 TDT (2012 Sep 30.976) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Sep 30 5133 Phillipadams 23h 25.7m UT 9.5 22 17 3.292-31 9 30.82TYC 7496-00784-1 10.0 14.8 23 7.1 1.326 -0.562 9.65 -27.2761 -31.160 -174.01 -3.25 23.4288 0.61981 0.46727 -1.09095 1.45306 0.00292 0.00258 2000 344.9540642012 930.00000280.089932 87.675515 12.0239610.22269184 2.7130343 2.108863711.5 5.00.15 RATE 2.2055720 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.102 0.060 78 4.93 0.094 0 0-3 0 056165.0020120930_0784-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Aug 25, 23:11 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org