IOTA/IOTA-ES occultation update for (0) 2005 TO74 / TYC 0022-00688-1 event on 2009 Jul 05, 17:42 UT Visible from Summary ------- On 2009 Jul 05 UT, the 68 km diameter asteroid (0) 2005 TO74 will occult a 12.5 mag star in the constellation Pisces for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 10.9 mag to 23.3 mag (the magnitude of the asteroid) for at most 9.2 seconds. This update is based on historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 0 * date and approx. time of event: 2009 Jul 05, 17:30 - 2009 Jul 05, 17:37 UT * magnitude of target star: 12.5 * magnitude drop [mag]: 10.9 * estimated maximum duration [s]: 9.2 * Moon: 97 % sunlit, 112° distance * Sun: 86° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 199 * 1 sigma uncertainty interval [path widths]: +/- 87.35 * 1 sigma uncertainty interval [seconds]: +/- 4171.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 1.371 +/- .499) * 1 sigma uncertainty ellipse (major, minor, PA): ( 1.459", .041", 70° ) * approx speed of asteroid's shadow [km/s]: 7.3686 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0022-00688-1 by 0 2005 TO74 on 2009 Jul 5 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 129 49 45 -79 0 0 17 30 7 1 60 -32 139 35 40 ... .. .. ... .. .. ... .. .. 138 49 6 -78 0 0 17 30 10 3 52 -32 147 8 30 129 49 17 ... .. .. ... .. .. Latitude Latitude Latitude Latitude 139 0 0 -77 58 39 17 30 10 3 51 -32 -79 4 19 -76 56 56 .. .. .. .. .. .. 140 0 0 -77 51 10 17 30 10 3 50 -31 -78 57 1 -76 49 16 .. .. .. .. .. .. 141 0 0 -77 43 30 17 30 11 3 49 -31 -78 49 34 -76 41 26 .. .. .. .. .. .. 142 0 0 -77 35 40 17 30 12 4 49 -31 -78 41 56 -76 33 26 .. .. .. .. .. .. 143 0 0 -77 27 41 17 30 12 4 48 -31 -78 34 8 -76 25 17 .. .. .. .. .. .. 144 0 0 -77 19 31 17 30 13 4 47 -31 -78 26 10 -76 16 58 .. .. .. .. .. .. 145 0 0 -77 11 11 17 30 14 4 46 -31 -78 18 1 -76 8 29 .. .. .. .. .. .. 146 0 0 -77 2 42 17 30 15 5 45 -31 -78 9 42 -75 59 50 .. .. .. .. .. .. 147 0 0 -76 54 2 17 30 16 5 44 -31 -78 1 13 -75 51 2 .. .. .. .. .. .. 148 0 0 -76 45 12 17 30 17 5 43 -31 -77 52 33 -75 42 4 .. .. .. .. .. .. 149 0 0 -76 36 12 17 30 18 5 42 -31 -77 43 42 -75 32 55 .. .. .. .. .. .. 150 0 0 -76 27 1 17 30 19 6 41 -31 -77 34 41 -75 23 37 .. .. .. .. .. .. 151 0 0 -76 17 41 17 30 21 6 40 -31 -77 25 29 -75 14 10 .. .. .. .. .. .. 152 0 0 -76 8 10 17 30 22 6 39 -30 -77 16 7 -75 4 32 .. .. .. .. .. .. 153 0 0 -75 58 29 17 30 24 6 38 -30 -77 6 34 -74 54 45 .. .. .. .. .. .. 154 0 0 -75 48 39 17 30 25 7 37 -30 -76 56 51 -74 44 48 .. .. .. .. .. .. 155 0 0 -75 38 38 17 30 27 7 36 -30 -76 46 57 -74 34 42 .. .. .. .. .. .. 156 0 0 -75 28 27 17 30 28 7 35 -30 -76 36 52 -74 24 26 .. .. .. .. .. .. 157 0 0 -75 18 7 17 30 30 8 34 -30 -76 26 38 -74 14 1 .. .. .. .. .. .. 158 0 0 -75 7 36 17 30 32 8 33 -30 -76 16 12 -74 3 26 .. .. .. .. .. .. 159 0 0 -74 56 56 17 30 34 8 32 -29 -76 5 37 -73 52 42 .. .. .. .. .. .. 160 0 0 -74 46 7 17 30 36 8 31 -29 -75 54 52 -73 41 50 .. .. .. .. .. .. 161 0 0 -74 35 8 17 30 38 9 30 -29 -75 43 56 -73 30 48 .. .. .. .. .. .. 162 0 0 -74 24 0 17 30 41 9 29 -29 -75 32 51 -73 19 37 .. .. .. .. .. .. 163 0 0 -74 12 43 17 30 43 9 28 -29 -75 21 36 -73 8 18 .. .. .. .. .. .. 164 0 0 -74 1 17 17 30 46 10 27 -28 -75 10 11 -72 56 51 .. .. .. .. .. .. 165 0 0 -73 49 42 17 30 48 10 26 -28 -74 58 37 -72 45 15 .. .. .. .. .. .. 166 0 0 -73 37 59 17 30 51 10 25 -28 -74 46 54 -72 33 32 .. .. .. .. .. .. 167 0 0 -73 26 7 17 30 54 11 24 -28 -74 35 3 -72 21 40 .. .. .. .. .. .. 168 0 0 -73 14 8 17 30 57 11 23 -27 -74 23 2 -72 9 42 .. .. .. .. .. .. 169 0 0 -73 2 0 17 31 0 11 22 -27 -74 10 53 -71 57 35 .. .. .. .. .. .. 170 0 0 -72 49 46 17 31 3 11 21 -27 -73 58 36 -71 45 22 .. .. .. 0 43 52 171 0 0 -72 37 24 17 31 7 12 20 -27 -73 46 11 -71 33 2 .. .. .. 0 56 9 172 0 0 -72 24 55 17 31 10 12 19 -26 -73 33 39 -71 20 36 .. .. .. 1 8 25 173 0 0 -72 12 19 17 31 14 12 18 -26 -73 20 59 -71 8 4 .. .. .. 1 20 39 174 0 0 -71 59 37 17 31 17 13 17 -26 -73 8 13 -70 55 25 .. .. .. 1 32 51 175 0 0 -71 46 49 17 31 21 13 16 -26 -72 55 20 -70 42 41 .. .. .. 1 45 1 176 0 0 -71 33 56 17 31 25 13 15 -25 -72 42 21 -70 29 53 .. .. .. 1 57 9 177 0 0 -71 20 57 17 31 29 14 14 -25 -72 29 16 -70 16 59 .. .. .. 2 9 15 178 0 0 -71 7 54 17 31 33 14 13 -25 -72 16 5 -70 4 1 .. .. .. 2 21 17 179 0 0 -70 54 46 17 31 38 14 11 -24 -72 2 50 -69 50 59 .. .. .. 2 33 16 180 0 0 -70 41 33 17 31 42 14 10 -24 -71 49 30 -69 37 53 .. .. .. 2 45 12 -179 0 0 -70 28 18 17 31 47 15 9 -24 -71 36 6 -69 24 44 .. .. .. 2 57 3 -178 0 0 -70 14 59 17 31 52 15 8 -23 -71 22 39 -69 11 32 .. .. .. 3 8 51 -177 0 0 -70 1 37 17 31 56 15 7 -23 -71 9 8 -68 58 18 .. .. .. 3 20 35 -176 0 0 -69 48 13 17 32 1 15 6 -23 -70 55 34 -68 45 2 .. .. .. 3 32 13 -175 0 0 -69 34 47 17 32 6 16 5 -22 -70 41 58 -68 31 44 .. .. .. 3 43 47 -174 0 0 -69 21 19 17 32 12 16 4 -22 -70 28 20 -68 18 25 .. .. .. 3 55 16 -173 0 0 -69 7 51 17 32 17 16 3 -21 -70 14 41 -68 5 5 .. .. .. 4 6 39 -172 0 0 -68 54 22 17 32 23 16 2 -21 -70 1 1 -67 51 45 .. .. .. 4 17 57 -171 0 0 -68 40 53 17 32 28 17 1 -21 -69 47 20 -67 38 25 .. .. .. 4 29 9 -170 0 0 -68 27 24 17 32 34 17 360 -20 -69 33 40 -67 25 6 .. .. .. 4 40 14 -169 0 0 -68 13 56 17 32 40 17 359 -20 -69 20 0 -67 11 48 .. .. .. 4 51 13 -168 0 0 -68 0 30 17 32 46 17 358 -19 -69 6 22 -66 58 32 .. .. .. 5 2 6 -167 0 0 -67 47 6 17 32 52 18 357 -19 -68 52 45 -66 45 18 .. .. .. 5 12 51 -166 0 0 -67 33 44 17 32 58 18 356 -19 -68 39 10 -66 32 6 .. .. .. 5 23 29 -165 0 0 -67 20 24 17 33 4 18 355 -18 -68 25 38 -66 18 58 .. .. .. 5 34 0 -164 0 0 -67 7 9 17 33 11 18 353 -18 -68 12 9 -66 5 53 .. .. .. 5 44 23 -163 0 0 -66 53 57 17 33 17 18 352 -17 -67 58 44 -65 52 52 .. .. .. 5 54 38 -162 0 0 -66 40 49 17 33 24 18 351 -17 -67 45 24 -65 39 55 .. .. .. 6 4 46 -161 0 0 -66 27 46 17 33 30 19 350 -16 -67 32 7 -65 27 3 .. .. .. 6 14 44 -160 0 0 -66 14 49 17 33 37 19 349 -16 -67 18 57 -65 14 17 .. .. .. 6 24 35 -159 0 0 -66 1 57 17 33 44 19 348 -15 -67 5 52 -65 1 37 .. .. .. 6 34 17 -158 0 0 -65 49 12 17 33 51 19 347 -15 -66 52 53 -64 49 3 .. .. .. 6 43 49 -157 0 0 -65 36 33 17 33 58 19 346 -14 -66 40 1 -64 36 35 .. .. .. 6 53 13 -156 0 0 -65 24 2 17 34 5 19 345 -14 -66 27 16 -64 24 15 .. .. .. 7 2 27 -155 0 0 -65 11 38 17 34 12 19 344 -13 -66 14 39 -64 12 3 .. .. .. 7 11 32 -154 0 0 -64 59 23 17 34 19 19 342 -13 -66 2 10 -63 59 59 .. .. .. 7 20 27 -153 0 0 -64 47 16 17 34 27 19 341 -13 -65 49 50 -63 48 3 .. .. .. 7 29 13 -152 0 0 -64 35 19 17 34 34 19 340 -12 -65 37 40 -63 36 17 .. .. .. 7 37 48 -151 0 0 -64 23 31 17 34 41 19 339 -12 -65 25 38 -63 24 40 .. .. .. .. .. .. -150 0 0 -64 11 52 17 34 49 19 338 -11 -65 13 47 -63 13 13 .. .. .. .. .. .. -149 0 0 -64 0 25 17 34 56 19 337 -11 -65 2 6 -63 1 56 .. .. .. .. .. .. -148 0 0 -63 49 8 17 35 3 19 336 -10 -64 50 37 -62 50 50 .. .. .. .. .. .. -147 0 0 -63 38 2 17 35 11 19 335 -10 -64 39 18 -62 39 55 .. .. .. .. .. .. -146 0 0 -63 27 8 17 35 18 19 334 -9 -64 28 12 -62 29 12 .. .. .. .. .. .. -145 0 0 -63 16 26 17 35 26 19 333 -9 -64 17 17 -62 18 40 .. .. .. .. .. .. -144 0 0 -63 5 56 17 35 33 19 331 -8 -64 6 35 -62 8 21 .. .. .. .. .. .. -143 0 0 -62 55 39 17 35 41 19 330 -8 -63 56 6 -61 58 14 .. .. .. .. .. .. -142 0 0 -62 45 35 17 35 48 19 329 -7 -63 45 51 -61 48 20 .. .. .. .. .. .. -141 0 0 -62 35 45 17 35 56 19 328 -7 -63 35 49 -61 38 39 .. .. .. .. .. .. -140 0 0 -62 26 8 17 36 3 19 327 -6 -63 26 1 -61 29 13 .. .. .. .. .. .. -139 0 0 -62 16 46 17 36 10 19 326 -6 -63 16 28 -61 20 0 .. .. .. .. .. .. -138 0 0 -62 7 38 17 36 18 19 325 -5 -63 7 9 -61 11 1 .. .. .. .. .. .. -137 0 0 -61 58 44 17 36 25 18 324 -5 -62 58 5 -61 2 17 .. .. .. .. .. .. -136 0 0 -61 50 6 17 36 32 18 323 -4 -62 49 16 -60 53 47 .. .. .. .. .. .. -135 0 0 -61 41 43 17 36 40 18 322 -4 -62 40 44 -60 45 33 .. .. .. .. .. .. -134 0 0 -61 33 36 17 36 47 18 321 -3 -62 32 27 -60 37 34 .. .. .. .. .. .. -133 0 0 -61 25 45 17 36 54 18 320 -3 -62 24 26 -60 29 51 .. .. .. .. .. .. -132 0 0 -61 18 9 17 37 1 17 319 -3 -62 16 41 -60 22 24 .. .. .. .. .. .. -131 0 0 -61 10 50 17 37 8 17 318 -2 -62 9 13 -60 15 13 .. .. .. .. .. .. -130 0 0 -61 3 48 17 37 14 17 317 -2 -62 2 2 -60 8 18 .. .. .. .. .. .. -129 0 0 -60 57 2 17 37 21 17 315 -1 -61 55 8 -60 1 39 .. .. .. .. .. .. -128 0 0 -60 50 34 17 37 28 16 314 -1 -61 48 31 -59 55 18 .. .. .. .. .. .. -127 0 0 -60 44 22 17 37 34 16 313 -1 -61 42 12 -59 49 13 .. .. .. .. .. .. -126 0 0 -60 38 28 17 37 41 16 312 0 -61 36 11 -59 43 25 .. .. .. .. .. .. Uncertainty in time = +/- 4357 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: TYC 0022-00688-1 * constellation : Pisces * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 01 07 06.4823 DE: +04 38 49.072 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .023, .023 ) * V mag [mag]: 12.5 * B mag [mag]: 12.1 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (0) 2005 TO74 approx. diameter [km]: 68 approx. diameter ["]: .003 distance from Earth [AU]: 30.33900 * orbital information: orbit source: Preston date of fit: 2008 Mar 20 source of used astrometry: MPC (via Astdys) number of used observations: 23 number of rejected observations: 0 time covered by the observations: 2005 Oct 08 - 2006 Nov 13 1 sigma uncertainty ellipse (major, minor, PA): 1.459, 0.035, 70° remarks: * orbital elements for (0) 2005 TO74 : Mean anomaly = 270.36260601 deg Arg. of pericenter = 301.49759469 deg Long. of node = 169.35389751 deg Inclination = 5.24595661 deg Eccentricity = 0.05065110 Semimajor axis = 30.22484053 AU Perihelion dist = 28.69391915 AU Mag: H = 8.45, G = 0.00 Epoch of elements : MJD 55017.73800000 TDT (2009 Jul 05.738) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jul 5 0 2005 TO74 17h 34.9m UT 12.5 1 7 6.482 4 38 49.07TYC 0022-00688-1 12.1 23.3 68 9.2 30.339 0.079 0.20 -170.8001 4.647 -82.56 22.72 17.5820 0.16141 -0.92586 4.09831 0.70812 -0.00535 -0.00222 2000 270.3167092009 628.00000301.497595169.353898 5.2459570.0506511030.224840528.6939191 8.5 5.00.00 RATE 0.0593140 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 1.459 0.041 70 88.35 0.270 0 54545.5020090705_0688-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 10:19 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org