IOTA/IOTA-ES occultation update for (613) Ginevra / TYC 1415-00062-1 event on 2007 Nov 01, 07:15 UT Visible from S Atlantic Ocean Summary ------- On 2007 Nov 01 UT, the 80 km diameter asteroid (613) Ginevra will occult a 11.1 mag star in the constellation Leo for observers along a path across S Atlantic Ocean. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.2 mag to 15.3 mag (the magnitude of the asteroid) for at most 3.1 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: 75 * date and approx. time of event: 2007 Nov 01, 07:13 - 2007 Nov 01, 07:16 UT * magnitude of target star: 11.1 * magnitude drop [mag]: 4.2 * estimated maximum duration [s]: 3.1 * Moon: 56 % sunlit, 26° distance * Sun: 71° distance * rough path description: S Atlantic Ocean The occultation path -------------------- * approximate projected width [km]: 237 * 1 sigma uncertainty interval [path widths]: +/- 0.75 * 1 sigma uncertainty interval [seconds]: +/- 2.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .025 +/- .028) * 1 sigma uncertainty ellipse (major, minor, PA): ( .028", .025", 5° ) * approx speed of asteroid's shadow [km/s]: 25.5810 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1415-00062-1 by 613 Ginevra on 2007 Nov 01 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 1 35 47 -72 0 0 7 16 29 1 0 21 - 2 0 17 5 0 36 - 7 52 46 ... .. .. 1 27 49 -71 0 0 7 16 29 2 0 21 - 1 57 22 4 42 46 - 7 30 30 ... .. .. 1 11 51 -70 0 0 7 16 28 3 1 22 - 2 4 1 4 18 17 - 7 20 54 ... .. .. 0 48 54 -69 0 0 7 16 27 4 1 22 - 2 18 57 3 47 57 - 7 22 6 ... .. .. 0 19 44 -68 0 0 7 16 27 5 2 22 - 2 41 13 3 12 23 - 7 32 41 ... .. .. - 0 15 1 -67 0 0 7 16 25 6 2 22 - 3 10 2 2 32 3 - 7 51 34 ... .. .. - 0 54 54 -66 0 0 7 16 24 7 3 22 - 3 44 49 1 47 21 - 8 17 58 ... .. .. - 1 39 33 -65 0 0 7 16 22 8 3 22 - 4 25 7 0 58 32 - 8 51 13 ... .. .. - 2 28 42 -64 0 0 7 16 20 9 4 22 - 5 10 36 0 5 50 - 9 30 53 3 46 23 - 3 22 10 -63 0 0 7 16 18 9 5 22 - 6 1 2 - 0 50 38 - 10 16 39 2 45 30 - 4 19 51 -62 0 0 7 16 16 10 6 21 - 6 56 17 - 1 50 46 - 11 8 18 1 41 40 - 5 21 42 -61 0 0 7 16 13 11 7 21 - 7 56 16 - 2 54 33 - 12 5 46 0 34 51 - 6 27 43 -60 0 0 7 16 10 12 8 21 - 9 1 1 - 4 2 0 - 13 9 4 - 0 34 58 - 7 38 0 -59 0 0 7 16 6 13 9 20 - 10 10 37 - 5 13 12 - 14 18 21 - 1 47 52 - 8 52 42 -58 0 0 7 16 3 14 11 20 - 11 25 16 - 6 28 17 - 15 33 54 - 3 4 0 - 10 12 3 -57 0 0 7 15 59 15 12 19 - 12 45 15 - 7 47 27 - 16 56 10 - 4 23 30 - 11 36 23 -56 0 0 7 15 54 16 14 18 - 14 10 59 - 9 10 59 - 18 25 47 - 5 46 35 - 13 6 8 -55 0 0 7 15 50 16 15 17 - 15 43 3 - 10 39 14 - 20 3 42 - 7 13 34 - 14 41 55 -54 0 0 7 15 44 17 17 16 - 17 22 12 - 12 12 40 - 21 51 15 - 8 44 48 - 16 24 30 -53 0 0 7 15 39 18 19 15 - 19 9 33 - 13 51 55 - 23 50 25 - 10 20 43 - 18 15 0 -52 0 0 7 15 32 18 21 14 - 21 6 38 - 15 37 47 - 26 4 15 - 12 1 55 - 20 14 55 -51 0 0 7 15 26 19 23 13 - 23 15 40 - 17 31 23 - 28 37 55 - 13 49 8 - 22 26 26 -50 0 0 7 15 18 19 25 11 - 25 40 10 - 19 34 14 - 31 41 6 - 15 43 22 Latitude Latitude Latitude Latitude - 24 0 0 -49 20 52 7 15 13 19 27 10 -50 40 48 -48 6 43 -52 55 27 -46 23 57 - 25 0 0 -48 57 17 7 15 10 19 28 9 -50 15 56 -47 44 9 -52 27 52 -46 2 36 - 26 0 0 -48 34 51 7 15 6 19 29 9 -49 52 20 -47 22 41 -52 1 48 -45 42 16 - 27 0 0 -48 13 34 7 15 3 19 30 8 -49 29 58 -47 2 16 -51 37 10 -45 22 55 - 28 0 0 -47 53 25 7 15 0 19 31 7 -49 8 48 -46 42 55 -51 13 58 -45 4 33 - 29 0 0 -47 34 22 7 14 57 19 32 6 -48 48 50 -46 24 38 -50 52 7 -44 47 10 - 30 0 0 -47 16 25 7 14 53 19 33 6 -48 30 2 -46 7 23 -50 31 37 -44 30 46 - 31 0 0 -46 59 33 7 14 50 19 34 5 -48 12 24 -45 51 10 -50 12 25 -44 15 20 - 32 0 0 -46 43 46 7 14 47 19 35 4 -47 55 54 -45 35 59 -49 54 30 -44 0 53 - 33 0 0 -46 29 4 7 14 44 19 36 3 -47 40 32 -45 21 49 -49 37 50 -43 47 23 - 34 0 0 -46 15 24 7 14 41 18 37 3 -47 26 17 -45 8 39 -49 22 24 -43 34 51 - 35 0 0 -46 2 49 7 14 38 18 38 2 -47 13 8 -44 56 31 -49 8 12 -43 23 16 - 36 0 0 -45 51 15 7 14 35 18 39 1 -47 1 5 -44 45 23 -48 55 12 -43 12 38 - 37 0 0 -45 40 45 7 14 32 18 39 1 -46 50 8 -44 35 14 -48 43 22 -43 2 58 - 38 0 0 -45 31 16 7 14 29 17 40 0 -46 40 15 -44 26 6 -48 32 44 -42 54 14 - 39 0 0 -45 22 49 7 14 26 17 41 -1 -46 31 27 -44 17 56 -48 23 15 -42 46 27 - 40 0 0 -45 15 23 7 14 24 16 42 -2 -46 23 43 -44 10 46 -48 14 55 -42 39 37 - 41 0 0 -45 8 59 7 14 21 16 43 -2 -46 17 3 -44 4 35 -48 7 44 -42 33 43 - 42 0 0 -45 3 35 7 14 18 16 44 -3 -46 11 26 -43 59 23 -48 1 42 -42 28 45 - 43 0 0 -44 59 12 7 14 16 15 45 -4 -46 6 52 -43 55 10 -47 56 47 -42 24 43 - 44 0 0 -44 55 50 7 14 13 15 46 -4 -46 3 21 -43 51 55 -47 53 0 -42 21 38 - 45 0 0 -44 53 28 7 14 11 14 47 -5 -46 0 53 -43 49 39 -47 50 19 -42 19 28 - 46 0 0 -44 52 7 7 14 9 14 47 -6 -45 59 27 -43 48 20 -47 48 46 -42 18 14 - 47 0 0 -44 51 46 7 14 7 13 48 -6 -45 59 4 -43 48 1 -47 48 20 -42 17 56 - 48 0 0 -44 52 24 7 14 5 13 49 -7 -45 59 44 -43 48 39 -47 49 1 -42 18 34 - 49 0 0 -44 54 3 7 14 3 12 50 -8 -46 1 25 -43 50 15 -47 50 48 -42 20 7 - 50 0 0 -44 56 42 7 14 1 12 51 -8 -46 4 9 -43 52 50 -47 53 42 -42 22 36 - 51 0 0 -45 0 21 7 13 59 11 51 -9 -46 7 56 -43 56 22 -47 57 43 -42 26 1 - 52 0 0 -45 5 0 7 13 57 10 52 -9 -46 12 45 -44 0 53 -48 2 51 -42 30 21 - 53 0 0 -45 10 39 7 13 55 10 53 -10 -46 18 36 -44 6 22 -48 9 6 -42 35 37 - 54 0 0 -45 17 18 7 13 54 9 54 -10 -46 25 30 -44 12 49 -48 16 29 -42 41 48 - 55 0 0 -45 24 58 7 13 52 8 54 -11 -46 33 27 -44 20 14 -48 24 59 -42 48 55 - 56 0 0 -45 33 38 7 13 51 8 55 -11 -46 42 27 -44 28 37 -48 34 37 -42 56 58 - 57 0 0 -45 43 19 7 13 50 7 56 -12 -46 52 30 -44 37 59 -48 45 24 -43 5 56 - 58 0 0 -45 54 0 7 13 49 6 57 -12 -47 3 37 -44 48 19 -48 57 20 .. .. .. - 59 0 0 -46 5 43 7 13 48 6 57 -13 -47 15 48 -44 59 38 -49 10 25 .. .. .. - 60 0 0 -46 18 27 7 13 47 5 58 -13 -47 29 3 -45 11 56 -49 24 41 .. .. .. - 61 0 0 -46 32 12 7 13 46 4 59 -14 -47 43 22 -45 25 13 -49 40 8 .. .. .. - 62 0 0 -46 46 59 7 13 46 4 60 -14 -47 58 47 -45 39 29 -49 56 47 .. .. .. - 63 0 0 -47 2 49 7 13 45 3 60 -14 -48 15 18 -45 54 45 -50 14 39 .. .. .. - 64 0 0 -47 19 42 7 13 45 2 61 -15 -48 32 55 -46 11 0 -50 33 46 .. .. .. - 65 0 0 -47 37 37 7 13 44 1 62 -15 -48 51 39 .. .. .. .. .. .. .. .. .. - 66 0 0 -47 56 36 7 13 44 1 63 -15 -49 11 32 .. .. .. .. .. .. .. .. .. Data for the target star ------------------------ * name: TYC 1415-00062-1 * constellation : Leo * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 10 04 26.7547 DE: +17 34 01.614 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .017, .025 ) * V mag [mag]: 11.1 * B mag [mag]: 11.7 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (613) Ginevra approx. diameter [km]: 80 approx. diameter ["]: .037 distance from Earth [AU]: 2.99400 * orbital information: orbit source: Preston date of fit: 2007 Oct 23 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 722 number of rejected observations: 74 time covered by the observations: 1901 Oct 14 - 2007 Mar 15 1 sigma uncertainty ellipse (major, minor, PA): 0.019, 0.012, 118° remarks: * orbital elements for (613) Ginevra : Mean anomaly = 60.16429908 deg Arg. of pericenter = 65.82957239 deg Long. of node = 354.92454918 deg Inclination = 7.68107510 deg Eccentricity = 0.06156671 Semimajor axis = 2.91966945 AU Perihelion dist = 2.73991500 AU Mag: H = 9.54, G = 0.15 Epoch of elements : MJD 54405.30200000 TDT (2007 Nov 01.302) ------ occelmnt file for Occult BEGIN ----------------------------------- 2007 Nov 01 613 Ginevra 7h 15.1m UT 11.1 10 4 26.755 17 34 1.61TYC 1415-00062-1 11.7 15.3 80 3.1 2.994 2.798 -14.04 2.129 17.570 67.13 -14.33 7.2520 -.31047 -.88860 13.62500 -4.77839 -0.00512 0.00210 2000 59.116824920071027.00000 65.829572354.924549 7.6810750.061566712.919669452.739915009.675 0.15 RATE 1.9756206 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.028 0.025 5.0 1.750 0.028 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2007 Oct 23, 22:00 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org