IOTA/IOTA-ES occultation update for (395) Delia / TYC 1830-01346 event on 2001 Dec 09, 02:00 UT Visible from Russia, Scandanavia, Canada, USA Summary ------- On the early morning of 2001 Dec 09 UT, the 51 km diameter asteroid (395) Delia will occult a 9.8 mag star in the constellation Taurus for observers along a path across Russia, Scandanavia, Canada, USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.7 mag to 14.5 mag (the magnitude of the asteroid) for at most 3.7 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Ron Stone, historical astrometry from AstDys, and the following catalogs for the star position: Tycho-2. The event at a glimpse ---------------------- * date and approx. time of event: 2001 Dec 09, 01:54 - 02:06 UT * magnitude of target star: 9.8 * magnitude drop [mag]: 4.7 * estimated maximum duration [s]: 3.7 * Moon: 36 % sunlit, 112° distance * Sun: 174° distance * rough path description: Russia, Scandanavia, Canada, USA The occultation path -------------------- * approximate projected width [km]: 70 * 1 sigma uncertainty interval [path widths]: +/- 1.12 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .039 +/- .036) * 1 sigma uncertainty ellipse (major, minor, PA): ( .039", .036", 87° ) * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.oz.net/~stevepr/Asteroids/asteroid.htm Path Coordinates: Occultation of TYC 1830-01346 by 395 Delia on 2001 Dec 09 Centre Altitude Path Limits E. Longitude Latitude U.T. star sun Limit 1 Limit 2 o ' " o ' " h m s o o o ' " o ' " Latitude Latitude -142 0 0 28 44 56 2 6 17 1 4 29 5 55 28 24 6 -141 0 0 29 11 20 2 6 17 2 3 29 32 23 28 50 24 -140 0 0 29 38 4 2 6 17 3 2 29 59 12 29 17 5 -139 0 0 30 5 10 2 6 16 4 1 30 26 22 29 44 6 -138 0 0 30 32 35 2 6 15 5 0 30 53 51 30 11 26 -137 0 0 31 0 19 2 6 14 6 -1 31 21 40 30 39 6 -136 0 0 31 28 21 2 6 13 7 -2 31 49 47 31 7 4 -135 0 0 31 56 41 2 6 12 7 -3 32 18 11 31 35 19 -134 0 0 32 25 17 2 6 10 8 -4 32 46 51 32 3 51 -133 0 0 32 54 8 2 6 9 9 -5 33 15 47 32 32 38 -132 0 0 33 23 15 2 6 7 10 -6 33 44 58 33 1 40 -131 0 0 33 52 34 2 6 5 11 -7 34 14 22 33 30 55 -130 0 0 34 22 7 2 6 3 12 -8 34 43 59 34 0 24 -129 0 0 34 51 51 2 6 0 13 -8 35 13 48 34 30 4 -128 0 0 35 21 47 2 5 58 14 -9 35 43 47 34 59 55 -127 0 0 35 51 52 2 5 55 15 -10 36 13 57 35 29 56 -126 0 0 36 22 6 2 5 52 16 -11 36 44 15 36 0 6 -125 0 0 36 52 27 2 5 49 17 -12 37 14 40 36 30 23 -124 0 0 37 22 56 2 5 46 18 -13 37 45 13 37 0 48 -123 0 0 37 53 30 2 5 43 19 -14 38 15 51 37 31 19 -122 0 0 38 24 9 2 5 39 19 -15 38 46 34 38 1 54 -121 0 0 38 54 52 2 5 36 20 -16 39 17 20 38 32 33 -120 0 0 39 25 37 2 5 32 21 -17 39 48 9 39 3 15 -119 0 0 39 56 24 2 5 29 22 -18 40 19 0 39 33 59 -118 0 0 40 27 12 2 5 25 23 -18 40 49 51 40 4 43 -117 0 0 40 57 60 2 5 21 24 -19 41 20 42 40 35 28 -116 0 0 41 28 46 2 5 17 25 -20 41 51 31 41 6 11 -115 0 0 41 59 29 2 5 12 25 -21 42 22 17 41 36 51 -114 0 0 42 30 9 2 5 8 26 -22 42 53 0 42 7 29 -113 0 0 43 0 45 2 5 4 27 -23 43 23 38 42 38 2 -112 0 0 43 31 15 2 4 59 28 -23 43 54 11 43 8 29 -111 0 0 44 1 39 2 4 54 28 -24 44 24 37 43 38 51 -110 0 0 44 31 55 2 4 50 29 -25 44 54 56 44 9 5 -109 0 0 45 2 3 2 4 45 30 -26 45 25 6 44 39 12 -108 0 0 45 32 2 2 4 40 31 -26 45 55 7 45 9 9 -107 0 0 46 1 51 2 4 35 31 -27 46 24 57 45 38 56 -106 0 0 46 31 29 2 4 31 32 -28 46 54 36 46 8 32 -105 0 0 47 0 55 2 4 26 33 -29 47 24 3 46 37 57 -104 0 0 47 30 8 2 4 21 33 -29 47 53 18 47 7 9 -103 0 0 47 59 8 2 4 15 34 -30 48 22 18 47 36 8 -102 0 0 48 27 53 2 4 10 35 -31 48 51 4 48 4 53 -101 0 0 48 56 24 2 4 5 35 -31 49 19 35 48 33 23 -100 0 0 49 24 38 2 4 0 36 -32 49 47 50 49 1 38 - 99 0 0 49 52 37 2 3 55 36 -32 50 15 48 49 29 36 - 98 0 0 50 20 18 2 3 50 37 -33 50 43 29 49 57 17 - 97 0 0 50 47 41 2 3 44 37 -34 51 10 52 50 24 41 - 96 0 0 51 14 46 2 3 39 38 -34 51 37 57 50 51 47 - 95 0 0 51 41 33 2 3 34 38 -35 52 4 42 51 18 34 - 94 0 0 52 7 59 2 3 29 39 -35 52 31 8 51 45 2 - 93 0 0 52 34 6 2 3 24 39 -36 52 57 14 52 11 10 - 92 0 0 52 59 53 2 3 18 40 -36 53 22 59 52 36 58 - 91 0 0 53 25 19 2 3 13 40 -37 53 48 23 53 2 25 - 90 0 0 53 50 23 2 3 8 41 -37 54 13 26 53 27 32 - 89 0 0 54 15 7 2 3 3 41 -38 54 38 7 53 52 17 - 88 0 0 54 39 28 2 2 58 42 -38 55 2 26 54 16 40 - 87 0 0 55 3 27 2 2 52 42 -39 55 26 23 54 40 42 - 86 0 0 55 27 4 2 2 47 42 -39 55 49 57 55 4 21 - 85 0 0 55 50 18 2 2 42 43 -39 56 13 9 55 27 38 - 84 0 0 56 13 9 2 2 37 43 -40 56 35 57 55 50 32 - 83 0 0 56 35 38 2 2 32 43 -40 56 58 22 56 13 3 - 82 0 0 56 57 43 2 2 27 44 -41 57 20 24 56 35 11 - 81 0 0 57 19 25 2 2 22 44 -41 57 42 3 56 56 56 - 80 0 0 57 40 43 2 2 17 44 -41 58 3 18 57 18 18 - 79 0 0 58 1 38 2 2 12 44 -42 58 24 10 57 39 17 - 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36 0 0 67 21 30 1 59 22 45 -45 67 41 5 67 2 1 - 35 0 0 67 27 44 1 59 19 45 -45 67 47 16 67 8 18 - 34 0 0 67 33 43 1 59 16 45 -45 67 53 12 67 14 20 - 33 0 0 67 39 26 1 59 13 45 -45 67 58 53 67 20 6 - 32 0 0 67 44 55 1 59 10 45 -45 68 4 19 67 25 37 - 31 0 0 67 50 8 1 59 7 45 -45 68 9 29 67 30 53 - 30 0 0 67 55 7 1 59 4 45 -45 68 14 26 67 35 54 - 29 0 0 67 59 51 1 59 1 44 -45 68 19 7 67 40 41 - 28 0 0 68 4 20 1 58 58 44 -45 68 23 35 67 45 12 - 27 0 0 68 8 36 1 58 55 44 -45 68 27 48 67 49 30 - 26 0 0 68 12 37 1 58 52 44 -44 68 31 46 67 53 33 - 25 0 0 68 16 23 1 58 49 44 -44 68 35 31 67 57 21 - 24 0 0 68 19 56 1 58 46 44 -44 68 39 2 68 0 56 - 23 0 0 68 23 15 1 58 43 43 -44 68 42 19 68 4 16 - 22 0 0 68 26 20 1 58 40 43 -44 68 45 22 68 7 23 - 21 0 0 68 29 11 1 58 38 43 -44 68 48 12 68 10 16 - 20 0 0 68 31 48 1 58 35 43 -44 68 50 48 68 12 55 - 19 0 0 68 34 12 1 58 32 43 -44 68 53 11 68 15 20 - 18 0 0 68 36 23 1 58 29 43 -43 68 55 20 68 17 31 - 17 0 0 68 38 20 1 58 27 42 -43 68 57 16 68 19 29 - 16 0 0 68 40 3 1 58 24 42 -43 68 58 59 68 21 14 - 15 0 0 68 41 34 1 58 21 42 -43 69 0 28 68 22 45 - 14 0 0 68 42 51 1 58 18 42 -43 69 1 44 68 24 3 - 13 0 0 68 43 54 1 58 16 42 -43 69 2 47 68 25 7 - 12 0 0 68 44 45 1 58 13 41 -43 69 3 37 68 25 58 - 11 0 0 68 45 22 1 58 10 41 -42 69 4 14 68 26 35 - 10 0 0 68 45 46 1 58 8 41 -42 69 4 38 68 26 59 - 9 0 0 68 45 57 1 58 5 41 -42 69 4 49 68 27 10 - 8 0 0 68 45 54 1 58 3 41 -42 69 4 46 68 27 8 - 7 0 0 68 45 39 1 57 60 40 -42 69 4 31 68 26 52 - 6 0 0 68 45 10 1 57 57 40 -41 69 4 2 68 26 23 - 5 0 0 68 44 28 1 57 55 40 -41 69 3 20 68 25 41 - 4 0 0 68 43 32 1 57 52 40 -41 69 2 25 68 24 45 - 3 0 0 68 42 24 1 57 50 39 -41 69 1 18 68 23 36 - 2 0 0 68 41 2 1 57 47 39 -41 68 59 56 68 22 14 - 1 0 0 68 39 27 1 57 45 39 -41 68 58 22 68 20 38 0 0 0 68 37 38 1 57 42 39 -40 68 56 34 68 18 48 1 0 0 68 35 36 1 57 39 38 -40 68 54 33 68 16 45 2 0 0 68 33 21 1 57 37 38 -40 68 52 19 68 14 28 3 0 0 68 30 52 1 57 34 38 -40 68 49 51 68 11 58 4 0 0 68 28 9 1 57 32 38 -40 68 47 9 68 9 14 5 0 0 68 25 12 1 57 29 38 -39 68 44 14 68 6 16 6 0 0 68 22 2 1 57 27 37 -39 68 41 6 68 3 4 7 0 0 68 18 37 1 57 24 37 -39 68 37 43 67 59 38 8 0 0 68 14 59 1 57 22 37 -39 68 34 6 67 55 58 9 0 0 68 11 7 1 57 19 36 -38 68 30 16 67 52 4 10 0 0 68 6 60 1 57 17 36 -38 68 26 11 67 47 55 11 0 0 68 2 39 1 57 14 36 -38 68 21 52 67 43 32 12 0 0 67 58 3 1 57 12 36 -38 68 17 19 67 38 54 13 0 0 67 53 13 1 57 9 35 -37 68 12 31 67 34 1 14 0 0 67 48 8 1 57 7 35 -37 68 7 28 67 28 54 15 0 0 67 42 48 1 57 4 35 -37 68 2 10 67 23 31 16 0 0 67 37 12 1 57 2 34 -37 67 56 38 67 17 53 17 0 0 67 31 22 1 56 60 34 -36 67 50 50 67 12 0 18 0 0 67 25 16 1 56 57 34 -36 67 44 47 67 5 52 19 0 0 67 18 55 1 56 55 34 -36 67 38 29 66 59 27 20 0 0 67 12 18 1 56 52 33 -35 67 31 55 66 52 47 21 0 0 67 5 24 1 56 50 33 -35 67 25 5 66 45 51 22 0 0 66 58 15 1 56 47 33 -35 67 17 59 66 38 38 23 0 0 66 50 49 1 56 45 32 -35 67 10 36 66 31 9 24 0 0 66 43 7 1 56 42 32 -34 67 2 58 66 23 24 25 0 0 66 35 8 1 56 40 32 -34 66 55 2 66 15 21 26 0 0 66 26 52 1 56 37 31 -34 66 46 50 66 7 1 27 0 0 66 18 19 1 56 35 31 -33 66 38 20 65 58 25 28 0 0 66 9 28 1 56 33 31 -33 66 29 33 65 49 30 29 0 0 66 0 20 1 56 30 30 -33 66 20 29 65 40 18 30 0 0 65 50 54 1 56 28 30 -32 66 11 7 65 30 48 31 0 0 65 41 9 1 56 25 29 -32 66 1 26 65 20 60 32 0 0 65 31 6 1 56 23 29 -32 65 51 27 65 10 53 33 0 0 65 20 45 1 56 20 29 -31 65 41 10 65 0 27 34 0 0 65 10 5 1 56 18 28 -31 65 30 34 64 49 43 35 0 0 64 59 5 1 56 16 28 -31 65 19 39 64 38 39 36 0 0 64 47 47 1 56 13 28 -30 65 8 25 64 27 16 37 0 0 64 36 8 1 56 11 27 -30 64 56 50 64 15 33 38 0 0 64 24 10 1 56 8 27 -29 64 44 57 64 3 31 39 0 0 64 11 51 1 56 6 26 -29 64 32 42 63 51 8 40 0 0 63 59 12 1 56 4 26 -29 64 20 8 63 38 24 41 0 0 63 46 12 1 56 1 25 -28 64 7 13 63 25 20 42 0 0 63 32 52 1 55 59 25 -28 63 53 57 63 11 55 43 0 0 63 19 10 1 55 57 25 -27 63 40 20 62 58 9 44 0 0 63 5 7 1 55 54 24 -27 63 26 21 62 44 1 45 0 0 62 50 42 1 55 52 24 -27 63 12 1 62 29 31 46 0 0 62 35 55 1 55 50 23 -26 62 57 18 62 14 40 47 0 0 62 20 46 1 55 47 23 -26 62 42 14 61 59 26 48 0 0 62 5 14 1 55 45 22 -25 62 26 47 61 43 50 49 0 0 61 49 20 1 55 43 22 -25 62 10 57 61 27 51 50 0 0 61 33 3 1 55 41 21 -24 61 54 45 61 11 29 51 0 0 61 16 22 1 55 38 21 -24 61 38 9 60 54 45 52 0 0 60 59 19 1 55 36 20 -23 61 21 10 60 37 37 53 0 0 60 41 52 1 55 34 20 -23 61 3 47 60 20 5 54 0 0 60 24 1 1 55 32 19 -22 60 46 1 60 2 10 55 0 0 60 5 46 1 55 30 19 -22 60 27 51 59 43 51 56 0 0 59 47 8 1 55 28 18 -21 60 9 17 59 25 8 57 0 0 59 28 5 1 55 26 17 -21 59 50 18 59 6 1 58 0 0 59 8 38 1 55 24 17 -20 59 30 56 58 46 30 59 0 0 58 48 47 1 55 22 16 -19 59 11 8 58 26 35 60 0 0 58 28 31 1 55 20 16 -19 58 50 57 58 6 15 61 0 0 58 7 51 1 55 18 15 -18 58 30 21 57 45 31 62 0 0 57 46 46 1 55 16 14 -18 58 9 20 57 24 23 63 0 0 57 25 17 1 55 14 14 -17 57 47 54 57 2 50 64 0 0 57 3 23 1 55 13 13 -16 57 26 4 56 40 53 65 0 0 56 41 5 1 55 11 13 -16 57 3 49 56 18 31 66 0 0 56 18 23 1 55 9 12 -15 56 41 10 55 55 45 67 0 0 55 55 16 1 55 8 11 -14 56 18 7 55 32 36 68 0 0 55 31 45 1 55 7 11 -14 55 54 39 55 9 2 69 0 0 55 7 50 1 55 5 10 -13 55 30 47 54 45 4 70 0 0 54 43 31 1 55 4 9 -12 55 6 30 54 20 43 71 0 0 54 18 49 1 55 3 8 -12 54 41 51 53 55 58 72 0 0 53 53 43 1 55 1 8 -11 54 16 47 53 30 50 73 0 0 53 28 15 1 55 0 7 -10 53 51 21 53 5 19 74 0 0 53 2 24 1 54 59 6 -10 53 25 32 52 39 26 75 0 0 52 36 10 1 54 59 6 -9 52 59 20 52 13 11 76 0 0 52 9 35 1 54 58 5 -8 52 32 46 51 46 34 77 0 0 51 42 38 1 54 57 4 -7 52 5 51 51 19 36 78 0 0 51 15 20 1 54 57 3 -7 51 38 35 50 52 17 79 0 0 50 47 42 1 54 56 2 -6 51 10 58 50 24 38 80 0 0 50 19 45 1 54 56 2 -5 50 43 1 49 56 39 81 0 0 49 51 28 1 54 56 1 -4 50 14 44 49 28 22 82 0 0 49 22 52 1 54 55 0 -4 49 46 9 .. .. .. Data for the target star ------------------------ * name: TYC 1830-01346 * constellation : Taurus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 04 39 06.6753 DE: +22 42 43.443 * position source: Tycho-2 * standard error: RA,DE ["]: ( .021, .025 ) * V mag [mag]: 9.8 * remarks: Data for the minor planet ------------------------- * general information: number,name: (395) Delia approx. diameter [km]: 51 approx. diameter ["]: .035 * orbital information: orbit source: Preston source of used astrometry: FASTT Astdys number of used observations: 366 number of rejected observations: 43 time covered by the observations: 1916 Jul 31 - 2001 Nov 22 1 sigma uncertainty ellipse (major, minor, PA): 0.033, 0.026, 86° remarks: * orbital elements for (395) Delia : Mean anomaly = 159.38697714 deg Arg. of pericenter = 10.95524411 deg Long. of node = 259.79697278 deg Inclination = 3.35820882 deg Eccentricity = 0.08443959 Semimajor axis = 2.78627209 AU Perihelion dist = 2.55100041 AU Mag: H = 10.27, G = 0.15 Epoch of elements : MJD 52252.08300000 TDT (2001 Dec 09.083) ------ occelmnt file for Occult BEGIN ----------------------------------- 2001 Dec 09 395 Delia 2h 0.6m UT 1830-01346 9.8 4 39 6.675 22 42 43.44TYC 1830-01346 14.5 51 3.7 2.027 -2.365 -6.98 -38.261 22.715 147.91 -22.81 2.0100 -.14209 .66599 -7.54347 -1.60907 0.00056 0.00001 2000 158.945550200112 7.0000010.9552441259.7969723.358208820.084439592.786272082.5510004110.35 0.15 RATE 2.1191850 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2001 Nov 29, 23:09 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@ acm.org