IOTA/IOTA-ES occultation update for (2416) Sharonov / TYC 0803-00470-1 event on 2007 Nov 02, 04:45 UT Visible from Brazil, Argentina Summary ------- On 2007 Nov 02 UT, the 27 km diameter asteroid (2416) Sharonov will occult a 9.4 mag star in the constellation Cancer for observers along a path across Brazil, Argentina. In the case of an occultation, the combined light of the asteroid and the star will drop by 7.7 mag to 17.1 mag (the magnitude of the asteroid) for at most 2.1 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: . The event at a glimpse ---------------------- * Rank: 16 * date and approx. time of event: 2007 Nov 02, 04:39 - 2007 Nov 02, 04:50 UT * magnitude of target star: 9.4 * magnitude drop [mag]: 7.7 * estimated maximum duration [s]: 2.1 * Moon: 46 % sunlit, 13° distance * Sun: 95° distance * rough path description: Brazil, Argentina The occultation path -------------------- * approximate projected width [km]: 42 * 1 sigma uncertainty interval [path widths]: +/- 4.13 * 1 sigma uncertainty interval [seconds]: +/- 10.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .064 +/- .053) * 1 sigma uncertainty ellipse (major, minor, PA): ( .064", .053", 92° ) * approx speed of asteroid's shadow [km/s]: 12.7128 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0803-00470-1 by 2416 Sharonov on 2007 Nov 02 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 - 69 0 0 -30 52 41 4 39 54 0 77 -44 -31 4 20 -30 41 4 .. .. .. .. .. .. - 68 0 0 -30 40 36 4 39 54 1 76 -44 -30 52 14 -30 29 1 -32 30 13 .. .. .. - 67 0 0 -30 29 1 4 39 55 2 75 -45 -30 40 38 -30 17 27 -32 18 25 .. .. .. - 66 0 0 -30 17 55 4 39 55 3 75 -45 -30 29 30 -30 6 23 -32 7 7 .. .. .. - 65 0 0 -30 7 19 4 39 56 4 74 -45 -30 18 53 -29 55 48 -31 56 19 .. .. .. - 64 0 0 -29 57 13 4 39 57 5 74 -44 -30 8 46 -29 45 42 -31 46 2 .. .. .. - 63 0 0 -29 47 36 4 39 58 5 73 -44 -29 59 8 -29 36 7 -31 36 15 .. .. .. - 62 0 0 -29 38 30 4 39 59 6 73 -44 -29 50 1 -29 27 2 -31 27 0 .. .. .. - 61 0 0 -29 29 55 4 40 0 7 72 -44 -29 41 25 -29 18 28 -31 18 15 .. .. .. - 60 0 0 -29 21 51 4 40 2 8 72 -44 -29 33 20 -29 10 24 -31 10 2 .. .. .. - 59 0 0 -29 14 17 4 40 4 9 71 -44 -29 25 46 -29 2 52 -31 2 21 -27 30 8 - 58 0 0 -29 7 15 4 40 6 10 71 -44 -29 18 43 -28 55 50 -30 55 12 -27 23 13 - 57 0 0 -29 0 44 4 40 8 11 70 -43 -29 12 11 -28 49 20 -30 48 34 -27 16 48 - 56 0 0 -28 54 45 4 40 10 12 70 -43 -29 6 12 -28 43 22 -30 42 29 -27 10 54 - 55 0 0 -28 49 18 4 40 13 12 69 -43 -29 0 44 -28 37 55 -30 36 57 -27 5 31 - 54 0 0 -28 44 22 4 40 15 13 69 -43 -28 55 48 -28 33 0 -30 31 57 -27 0 40 - 53 0 0 -28 39 59 4 40 18 14 68 -42 -28 51 24 -28 28 37 -30 27 29 -26 56 20 - 52 0 0 -28 36 8 4 40 21 15 68 -42 -28 47 32 -28 24 46 -30 23 35 -26 52 32 - 51 0 0 -28 32 49 4 40 24 16 67 -41 -28 44 13 -28 21 28 -30 20 13 -26 49 15 - 50 0 0 -28 30 3 4 40 28 17 67 -41 -28 41 27 -28 18 42 -30 17 25 -26 46 31 - 49 0 0 -28 27 49 4 40 31 17 66 -41 -28 39 13 -28 16 28 -30 15 10 -26 44 18 - 48 0 0 -28 26 8 4 40 35 18 65 -40 -28 37 32 -28 14 47 -30 13 29 -26 42 38 - 47 0 0 -28 25 0 4 40 39 19 65 -40 -28 36 24 -28 13 39 -30 12 21 -26 41 30 - 46 0 0 -28 24 25 4 40 43 20 64 -39 -28 35 49 -28 13 4 -30 11 46 -26 40 54 - 45 0 0 -28 24 23 4 40 47 21 64 -39 -28 35 47 -28 13 1 -30 11 45 -26 40 50 - 44 0 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2 31 53 -29 -29 33 26 -29 10 22 -31 10 45 -27 36 59 - 30 0 0 -29 30 7 4 42 9 32 52 -28 -29 41 41 -29 18 35 -31 19 11 -27 45 3 - 29 0 0 -29 38 54 4 42 15 32 51 -28 -29 50 30 -29 27 21 -31 28 11 -27 53 39 - 28 0 0 -29 48 14 4 42 22 33 50 -27 -29 59 51 -29 36 40 -31 37 43 -28 2 48 - 27 0 0 -29 58 6 4 42 29 33 49 -26 -30 9 45 -29 46 31 -31 47 49 -28 12 28 - 26 0 0 -30 8 31 4 42 36 34 48 -25 -30 20 11 -29 56 54 -31 58 28 -28 22 40 - 25 0 0 -30 19 28 4 42 42 34 47 -24 -30 31 9 -30 7 49 -32 9 39 -28 33 24 - 24 0 0 -30 30 57 4 42 50 35 46 -24 -30 42 40 -30 19 17 -32 21 23 -28 44 39 - 23 0 0 -30 42 57 4 42 57 35 45 -23 -30 54 42 -30 31 16 -32 33 40 -28 56 26 - 22 0 0 -30 55 29 4 43 4 36 44 -22 -31 7 16 -30 43 46 -32 46 29 -29 8 43 - 21 0 0 -31 8 33 4 43 11 36 43 -21 -31 20 21 -30 56 48 -32 59 49 -29 21 31 - 20 0 0 -31 22 8 4 43 19 37 42 -20 -31 33 58 -31 10 21 -33 13 42 -29 34 50 - 19 0 0 -31 36 13 4 43 26 37 41 -19 -31 48 5 -31 24 24 -33 28 6 -29 48 39 - 18 0 0 -31 50 49 4 43 34 38 40 -18 -32 2 43 -31 38 58 -33 43 0 -30 2 58 - 17 0 0 -32 5 55 4 43 41 38 38 -18 -32 17 51 -31 54 3 -33 58 26 -30 17 47 - 16 0 0 -32 21 31 4 43 49 38 37 -17 -32 33 29 -32 9 37 -34 14 22 -30 33 6 - 15 0 0 -32 37 37 4 43 56 39 36 -16 -32 49 37 -32 25 40 -34 30 48 -30 48 53 - 14 0 0 -32 54 12 4 44 4 39 35 -15 -33 6 14 -32 42 13 -34 47 44 -31 5 9 - 13 0 0 -33 11 15 4 44 12 39 33 -14 -33 23 20 -32 59 14 -35 5 9 -31 21 54 - 12 0 0 -33 28 47 4 44 20 39 32 -13 -33 40 54 -33 16 44 -35 23 3 -31 39 6 - 11 0 0 -33 46 47 4 44 28 39 31 -12 -33 58 56 -33 34 42 -35 41 25 -31 56 46 - 10 0 0 -34 5 14 4 44 36 40 29 -11 -34 17 26 -33 53 7 -36 0 16 -32 14 53 - 9 0 0 -34 24 9 4 44 44 40 28 -10 -34 36 22 -34 11 59 -36 19 33 -32 33 27 - 8 0 0 -34 43 30 4 44 52 40 27 -9 -34 55 46 -34 31 17 -36 39 18 -32 52 27 - 7 0 0 -35 3 16 4 44 59 40 25 -9 -35 15 35 -34 51 1 -36 59 29 -33 11 52 - 6 0 0 -35 23 29 4 45 7 40 24 -8 -35 35 49 -35 11 11 -37 20 6 -33 31 43 - 5 0 0 -35 44 6 4 45 15 40 23 -7 -35 56 29 -35 31 46 -37 41 7 -33 51 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35 20 4 47 11 37 3 7 -41 48 23 -41 22 21 -43 38 53 -39 37 30 11 0 0 -42 0 57 4 47 18 37 1 7 -42 14 3 -41 47 56 -44 4 56 -40 2 45 12 0 0 -42 26 46 4 47 25 36 360 8 -42 39 55 -42 13 42 -44 31 11 -40 28 13 13 0 0 -42 52 46 4 47 32 36 359 9 -43 5 57 -42 39 40 -44 57 36 -40 53 51 14 0 0 -43 18 56 4 47 39 35 358 10 -43 32 9 -43 5 47 -45 24 10 -41 19 39 15 0 0 -43 45 15 4 47 46 35 356 11 -43 58 30 -43 32 3 -45 50 53 -41 45 36 16 0 0 -44 11 41 4 47 52 34 355 12 -44 24 59 -43 58 27 -46 17 43 -42 11 42 17 0 0 -44 38 14 4 47 59 34 354 12 -44 51 34 -44 24 58 -46 44 40 -42 37 55 18 0 0 -45 4 53 4 48 5 33 353 13 -45 18 16 -44 51 35 -47 11 42 -43 4 15 19 0 0 -45 31 37 4 48 11 33 352 14 -45 45 2 -45 18 16 -47 38 48 -43 30 39 20 0 0 -45 58 25 4 48 18 32 350 15 -46 11 52 -45 45 2 -48 5 58 -43 57 8 21 0 0 -46 25 15 4 48 24 32 349 15 -46 38 44 -46 11 50 -48 33 9 -44 23 41 22 0 0 -46 52 8 4 48 29 31 348 16 -47 5 39 -46 38 41 -49 0 22 -44 50 16 23 0 0 -47 19 1 4 48 35 30 347 17 -47 32 34 -47 5 32 -49 27 35 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20 13 320 31 -59 12 17 -58 44 51 -61 9 6 -56 54 46 52 0 0 -59 19 55 4 50 21 12 319 32 -59 33 39 -59 6 16 -61 30 17 -57 16 21 53 0 0 -59 40 59 4 50 23 11 318 32 -59 54 41 -59 27 21 -61 51 7 -57 37 36 54 0 0 -60 1 43 4 50 25 11 317 32 -60 15 24 -59 48 7 -62 11 37 -57 58 32 55 0 0 -60 22 7 4 50 26 10 316 33 -60 35 46 -60 8 32 -62 31 45 -58 19 10 56 0 0 -60 42 10 4 50 28 10 315 33 -60 55 48 -60 28 37 -62 51 33 -58 39 28 57 0 0 -61 1 54 4 50 29 9 315 33 -61 15 30 -60 48 23 -63 10 59 -58 59 26 58 0 0 -61 21 17 4 50 30 9 314 33 -61 34 51 -61 7 47 -63 30 4 -59 19 5 59 0 0 -61 40 19 4 50 31 8 313 33 -61 53 52 -61 26 52 -63 48 47 -59 38 23 60 0 0 -61 59 1 4 50 32 7 312 34 -62 12 31 -61 45 35 -64 7 9 -59 57 22 61 0 0 -62 17 22 4 50 33 7 311 34 -62 30 51 -62 3 59 -64 25 10 .. .. .. 62 0 0 -62 35 23 4 50 34 6 310 34 -62 48 49 -62 22 1 -64 42 50 .. .. .. 63 0 0 -62 53 3 4 50 35 6 309 34 -63 6 27 -62 39 43 -65 0 8 .. .. .. 64 0 0 -63 10 22 4 50 36 5 308 34 -63 23 43 -62 57 5 -65 17 5 .. .. .. 65 0 0 -63 27 20 4 50 36 5 307 34 -63 40 40 -63 14 6 -65 33 40 .. .. .. 66 0 0 -63 43 59 4 50 37 4 307 35 -63 57 15 -63 30 46 -65 49 55 .. .. .. 67 0 0 -64 0 16 4 50 37 4 306 35 -64 13 31 -63 47 6 -66 5 49 .. .. .. 68 0 0 -64 16 13 4 50 38 3 305 35 -64 29 25 -64 3 5 -66 21 22 .. .. .. 69 0 0 -64 31 50 4 50 38 3 304 35 -64 45 0 -64 18 45 -66 36 34 .. .. .. 70 0 0 -64 47 7 4 50 38 2 303 35 -65 0 14 -64 34 4 -66 51 25 .. .. .. 71 0 0 -65 2 4 4 50 38 2 302 35 -65 15 8 -64 49 3 -67 5 57 .. .. .. 72 0 0 -65 16 40 4 50 39 1 301 35 -65 29 42 -65 3 43 -67 20 8 .. .. .. 73 0 0 -65 30 58 4 50 39 1 300 35 -65 43 57 -65 18 2 .. .. .. .. .. .. 74 0 0 -65 44 55 4 50 39 0 299 35 -65 57 52 -65 32 2 .. .. .. .. .. .. Data for the target star ------------------------ * name: TYC 0803-00470-1 * constellation : Cancer * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 08 19 18.2884 DE: +11 31 52.995 * position source: mpos:TYC pm:TYC * standard error: RA,DE ["]: ( .035, .037 ) * V mag [mag]: 9.4 * B mag [mag]: 10.8 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2416) Sharonov approx. diameter [km]: 27 approx. diameter ["]: .013 distance from Earth [AU]: 2.86500 * orbital information: orbit source: Preston date of fit: 2007 Oct 23 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 710 number of rejected observations: 39 time covered by the observations: 1916 Aug 01 - 2007 Feb 21 1 sigma uncertainty ellipse (major, minor, PA): 0.053, 0.038, 93° remarks: * orbital elements for (2416) Sharonov : Mean anomaly = 220.76167924 deg Arg. of pericenter = 98.59193194 deg Long. of node = 148.79942050 deg Inclination = 10.51256746 deg Eccentricity = 0.04077812 Semimajor axis = 3.01454963 AU Perihelion dist = 2.89162196 AU Mag: H = 11.13, G = 0.15 Epoch of elements : MJD 54406.19800000 TDT (2007 Nov 02.198) ------ occelmnt file for Occult BEGIN ----------------------------------- 2007 Nov 02 2416 Sharonov 4h 45.3m UT 9.4 8 19 18.288 11 31 53.00TYC 0803-00470-1 10.8 17.1 27 2.1 2.865 1.421 -6.96 12.417 11.533 104.58 -14.62 4.7549 -.24059 -.72514 6.80726 -2.26905 -0.00573 0.00142 2000 219.59454120071027.00000 98.591932148.799421 10.5125670.040778123.014549632.8916219611.45 0.15 RATE 1.8830870 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.064 0.053 92.1 5.130 0.054 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2007 Oct 23, 22:08 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org