IOTA/IOTA-ES occultation update for (1212) Francette / TYC 5795-00972-1 event on 2007 Jul 04, 23:22 UT Visible from India, Africa Summary ------- On 2007 Jul 04 UT, the 82 km diameter asteroid (1212) Francette will occult a 10.7 mag star in the constellation Capricornus for observers along a path across India, Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 5.7 mag to 16.4 mag (the magnitude of the asteroid) for at most 8.3 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: 59 * date and approx. time of event: 2007 Jul 04, 23:13 - 2007 Jul 04, 23:34 UT * midpoint of event [JD]: 2454286.4748375 * magnitude of target star: 10.7 * magnitude drop [mag]: 5.7 * estimated maximum duration [s]: 8.3 * Moon: 79 % sunlit, 13° distance * Sun: 139° distance * rough path description: India, Africa The occultation path -------------------- * approximate projected width [km]: 84 * 1 sigma uncertainty interval [path widths]: +/- 1.04 * 1 sigma uncertainty interval [seconds]: +/- 10.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .038 +/- .030) * 1 sigma uncertainty ellipse (major, minor, PA): ( .039", .030", 81° ) * approx speed of asteroid's shadow [km/s]: 9.9023 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5795-00972-1 by 1212 Francette on 2007 Jul 04 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 - 43 0 0 -12 50 38 23 34 18 0 102 -41 -12 27 26 -13 13 49 -11 39 3 .. .. .. - 42 0 0 -13 2 29 23 34 18 1 101 -42 -12 39 19 -13 25 37 -11 51 0 .. .. .. - 41 0 0 -13 13 51 23 34 17 2 101 -43 -12 50 43 -13 36 57 -12 2 29 -14 24 54 - 40 0 0 -13 24 45 23 34 17 3 101 -44 -13 1 39 -13 47 49 -12 13 29 -14 35 41 - 39 0 0 -13 35 11 23 34 16 4 101 -45 -13 12 7 -13 58 13 -12 24 2 -14 46 1 - 38 0 0 -13 45 9 23 34 15 5 101 -46 -13 22 7 -14 8 9 -12 34 5 -14 55 53 - 37 0 0 -13 54 38 23 34 14 6 100 -47 -13 31 38 -14 17 37 -12 43 41 -15 5 17 - 36 0 0 -14 3 40 23 34 13 7 100 -48 -13 40 42 -14 26 37 -12 52 48 -15 14 14 - 35 0 0 -14 12 14 23 34 11 8 100 -49 -13 49 17 -14 35 9 -13 1 27 -15 22 42 - 34 0 0 -14 20 20 23 34 9 9 100 -50 -13 57 25 -14 43 13 -13 9 38 -15 30 44 - 33 0 0 -14 27 58 23 34 8 10 99 -51 -14 5 4 -14 50 50 -13 17 21 -15 38 17 - 32 0 0 -14 35 8 23 34 6 11 99 -52 -14 12 16 -14 57 59 -13 24 35 -15 45 23 - 31 0 0 -14 41 51 23 34 3 12 99 -53 -14 19 0 -15 4 40 -13 31 22 -15 52 2 - 30 0 0 -14 48 6 23 34 1 13 99 -54 -14 25 16 -15 10 54 -13 37 41 -15 58 13 - 29 0 0 -14 53 53 23 33 58 14 98 -55 -14 31 5 -15 16 40 -13 43 32 -16 3 56 - 28 0 0 -14 59 13 23 33 56 15 98 -55 -14 36 26 -15 21 58 -13 48 55 -16 9 13 - 27 0 0 -15 4 5 23 33 53 16 98 -56 -14 41 19 -15 26 50 -13 53 50 -16 14 2 - 26 0 0 -15 8 30 23 33 50 17 98 -57 -14 45 44 -15 31 13 -13 58 18 -16 18 24 - 25 0 0 -15 12 27 23 33 46 18 97 -58 -14 49 43 -15 35 10 -14 2 18 -16 22 19 - 24 0 0 -15 15 57 23 33 43 19 97 -59 -14 53 13 -15 38 39 -14 5 50 -16 25 47 - 23 0 0 -15 19 0 23 33 39 20 97 -60 -14 56 17 -15 41 42 -14 8 55 -16 28 48 - 22 0 0 -15 21 36 23 33 36 21 97 -61 -14 58 53 -15 44 17 -14 11 32 -16 31 21 - 21 0 0 -15 23 44 23 33 32 22 96 -62 -15 1 2 -15 46 24 -14 13 42 -16 33 28 - 20 0 0 -15 25 25 23 33 28 23 96 -63 -15 2 44 -15 48 5 -14 15 25 -16 35 8 - 19 0 0 -15 26 40 23 33 23 23 96 -64 -15 3 58 -15 49 19 -14 16 40 -16 36 22 - 18 0 0 -15 27 27 23 33 19 24 96 -65 -15 4 46 -15 50 6 -14 17 28 -16 37 8 - 17 0 0 -15 27 47 23 33 14 25 96 -65 -15 5 6 -15 50 27 -14 17 49 -16 37 28 - 16 0 0 -15 27 41 23 33 10 26 95 -66 -15 5 0 -15 50 20 -14 17 43 -16 37 22 - 15 0 0 -15 27 7 23 33 5 27 95 -67 -15 4 26 -15 49 47 -14 17 9 -16 36 48 - 14 0 0 -15 26 7 23 33 0 28 95 -68 -15 3 26 -15 48 47 -14 16 9 -16 35 48 - 13 0 0 -15 24 40 23 32 55 29 95 -69 -15 1 59 -15 47 20 -14 14 41 -16 34 22 - 12 0 0 -15 22 47 23 32 49 30 95 -70 -15 0 5 -15 45 27 -14 12 47 -16 32 29 - 11 0 0 -15 20 27 23 32 44 31 94 -71 -14 57 45 -15 43 7 -14 10 26 -16 30 10 - 10 0 0 -15 17 40 23 32 38 32 94 -71 -14 54 58 -15 40 21 -14 7 38 -16 27 25 - 9 0 0 -15 14 27 23 32 32 33 94 -72 -14 51 44 -15 37 8 -14 4 23 -16 24 13 - 8 0 0 -15 10 47 23 32 26 34 94 -73 -14 48 4 -15 33 29 -14 0 42 -16 20 36 - 7 0 0 -15 6 41 23 32 20 35 94 -74 -14 43 57 -15 29 24 -13 56 34 -16 16 32 - 6 0 0 -15 2 9 23 32 14 36 93 -75 -14 39 24 -15 24 52 -13 51 59 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30 23 26 7 73 110 -60 - 5 28 24 - 6 16 33 - 4 38 9 - 7 6 30 36 0 0 - 5 30 50 23 25 56 74 112 -59 - 5 6 41 - 5 54 56 - 4 16 21 - 6 44 58 37 0 0 - 5 8 49 23 25 45 74 115 -58 - 4 44 38 - 5 32 58 - 3 54 12 - 6 23 5 38 0 0 - 4 46 28 23 25 34 75 117 -57 - 4 22 14 - 5 10 39 - 3 31 43 - 6 0 52 39 0 0 - 4 23 47 23 25 22 76 120 -56 - 3 59 30 - 4 48 1 - 3 8 53 - 5 38 19 40 0 0 - 4 0 46 23 25 11 76 124 -55 - 3 36 27 - 4 25 3 - 2 45 44 - 5 15 26 41 0 0 - 3 37 25 23 24 59 77 127 -54 - 3 13 4 - 4 1 45 - 2 22 16 - 4 52 14 42 0 0 - 3 13 46 23 24 48 77 131 -53 - 2 49 22 - 3 38 8 - 1 58 28 - 4 28 43 43 0 0 - 2 49 48 23 24 36 78 135 -52 - 2 25 21 - 3 14 13 - 1 34 22 - 4 4 53 44 0 0 - 2 25 32 23 24 25 78 140 -51 - 2 1 2 - 2 49 59 - 1 9 58 - 3 40 44 45 0 0 - 2 0 58 23 24 13 78 145 -50 - 1 36 26 - 2 25 28 - 0 45 16 - 3 16 18 46 0 0 - 1 36 7 23 24 2 79 150 -49 - 1 11 32 - 2 0 39 - 0 20 17 - 2 51 34 47 0 0 - 1 10 58 23 23 50 79 155 -48 - 0 46 21 - 1 35 33 0 4 59 - 2 26 34 48 0 0 - 0 45 34 23 23 38 79 160 -47 - 0 20 54 - 1 10 11 0 30 31 - 2 1 16 49 0 0 - 0 19 53 23 23 27 78 165 -46 0 4 49 - 0 44 32 0 56 20 - 1 35 43 50 0 0 0 6 4 23 23 15 78 170 -45 0 30 48 - 0 18 38 1 22 23 - 1 9 54 51 0 0 0 32 15 23 23 3 78 175 -44 0 57 2 0 7 31 1 48 42 - 0 43 50 52 0 0 0 58 41 23 22 51 78 179 -43 1 23 30 0 33 54 2 15 15 - 0 17 31 53 0 0 1 25 21 23 22 40 77 183 -42 1 50 12 1 0 32 2 42 2 0 9 2 54 0 0 1 52 14 23 22 28 77 187 -41 2 17 8 1 27 23 3 9 2 0 35 49 55 0 0 2 19 21 23 22 16 76 191 -40 2 44 16 1 54 27 3 36 15 1 2 49 56 0 0 2 46 39 23 22 4 75 194 -39 3 11 37 2 21 44 4 3 41 1 30 1 57 0 0 3 14 10 23 21 53 75 197 -38 3 39 10 2 49 13 4 31 17 1 57 26 58 0 0 3 41 52 23 21 41 74 200 -37 4 6 53 3 16 52 4 59 5 2 25 1 59 0 0 4 9 44 23 21 30 73 202 -36 4 34 47 3 44 43 5 27 3 2 52 48 60 0 0 4 37 46 23 21 18 72 205 -35 5 2 51 4 12 43 5 55 11 3 20 45 61 0 0 5 5 58 23 21 6 72 207 -34 5 31 5 4 40 53 6 23 28 3 48 51 62 0 0 5 34 18 23 20 55 71 209 -33 5 59 27 5 9 12 6 51 54 4 17 6 63 0 0 6 2 46 23 20 44 70 210 -32 6 27 57 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30 43 18 32 21 44 29 53 21 122 0 0 31 25 27 23 13 31 13 248 27 31 49 30 31 1 26 32 39 40 30 11 35 123 0 0 31 43 10 23 13 29 12 249 28 32 7 10 31 19 11 32 57 14 30 29 26 124 0 0 32 0 29 23 13 27 11 249 29 32 24 27 31 36 34 33 14 24 30 46 55 125 0 0 32 17 26 23 13 25 10 250 30 32 41 21 31 53 33 33 31 12 31 4 0 126 0 0 32 34 0 23 13 24 9 250 31 32 57 52 32 10 10 33 47 37 31 20 43 127 0 0 32 50 10 23 13 22 8 251 32 33 13 59 32 26 24 34 3 39 31 37 2 128 0 0 33 5 58 23 13 21 7 251 33 33 29 44 32 42 14 34 19 18 31 52 59 129 0 0 33 21 22 23 13 20 6 252 34 33 45 6 32 57 41 34 34 33 32 8 31 130 0 0 33 36 23 23 13 19 6 252 34 34 0 4 33 12 45 34 49 25 32 23 41 131 0 0 33 51 1 23 13 18 5 253 35 34 14 39 33 27 25 35 3 54 32 38 27 132 0 0 34 5 15 23 13 17 4 254 36 34 28 50 33 41 42 35 18 0 32 52 50 133 0 0 34 19 6 23 13 17 3 254 37 34 42 38 33 55 36 35 31 43 33 6 49 134 0 0 34 32 34 23 13 16 2 255 38 34 56 3 34 9 6 35 45 2 33 20 25 135 0 0 34 45 38 23 13 16 1 255 39 35 9 5 34 22 13 35 57 58 33 33 37 136 0 0 34 58 18 23 13 16 0 256 39 35 21 43 34 34 56 36 10 30 33 46 25 Data for the target star ------------------------ * name: TYC 5795-00972-1 * constellation : Capricornus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 21 41 28.4494 DE: -11 28 10.632 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .018, .020 ) * V mag [mag]: 10.7 * B mag [mag]: 11.2 * Apparent position with proper motion RA(deg): 325.4757179731 DE(deg): -11.4346685114 * Equation of equinoxes (radians) : 0.000028753809891 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1212) Francette approx. diameter [km]: 82 approx. diameter ["]: .029 distance from Earth [AU]: 3.88100 * orbital information: orbit source: Preston date of fit: 2007 Jun 02 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 796 number of rejected observations: 57 time covered by the observations: 1931 Dec 03 - 2007 Apr 15 1 sigma uncertainty ellipse (major, minor, PA): 0.034, 0.022, 78° remarks: * orbital elements for (1212) Francette : Mean anomaly = 176.86517382 deg Arg. of pericenter = 348.00485634 deg Long. of node = 149.63213205 deg Inclination = 7.59093334 deg Eccentricity = 0.18950657 Semimajor axis = 3.94551621 AU Perihelion dist = 3.19781497 AU Mag: H = 9.42, G = 0.15 Epoch of elements : MJD 54285.97400000 TDT (2007 Jul 04.974) ------ occelmnt file for Occult BEGIN ----------------------------------- 2007 Jul 04 1212 Francette 23h 23.8m UT 10.7 21 41 28.449-11 28 10.63TYC 5795-00972-1 11.2 16.4 82 8.3 3.881 -0.786 -5.22 51.839 -11.468 -169.83 22.84 23.3961 -.08031 .17991 -5.09293 -2.30229 -0.00355 -0.00141 2000 176.1138732007 629.00000348.004856149.632132 7.5909330.189506573.945516213.197814979.545 0.15 RATE 1.2576170 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.039 0.030 80.7 2.040 0.030 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2007 Jun 06, 02:07 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org