IOTA/IOTA-ES occultation update for (772) Tanete / TYC 3442-00253-1 event on 2008 Jan 01, 23:38 UT Visible from Russia, SW Asia Summary ------- On 2008 Jan 01 UT, the 118 km diameter asteroid (772) Tanete will occult a 12.1 mag star in the constellation Ursa Major for observers along a path across Russia, SW Asia. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.4 mag to 13.2 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: 97 * date and approx. time of event: 2008 Jan 01, 23:31 - 2008 Jan 01, 23:46 UT * magnitude of target star: 12.1 * magnitude drop [mag]: 1.4 * estimated maximum duration [s]: 8.3 * Moon: 35 % sunlit, 74° distance * Sun: 128° distance * rough path description: Russia, SW Asia The occultation path -------------------- * approximate projected width [km]: 118 * 1 sigma uncertainty interval [path widths]: +/- 0.39 * 1 sigma uncertainty interval [seconds]: +/- 2.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .029 +/- .024) * 1 sigma uncertainty ellipse (major, minor, PA): ( .029", .023", 106° ) * approx speed of asteroid's shadow [km/s]: 14.1471 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 3442-00253-1 by 772 Tanete on 2008 Jan 01 Centre Star Star Sun Path Limit1 Path Limit2 Error Limit1 Error Limit2 E. Longitude Latitude U.T. Alt Az Alt o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " o ' " o ' " o ' " o ' " Longitude Latitude Longitude Latitude Longitude Latitude Longitude Latitude 56 2 44 -32 18 30 23 31 31 10 7 -18 55 23 14 -32 30 28 56 41 47 -32 8 23 54 52 4 -32 41 12 57 11 59 -32 1 42 56 42 14 -25 55 5 23 31 43 16 6 -22 56 5 59 -26 1 14 57 18 17 -25 49 52 55 37 34 -26 6 42 57 46 17 -25 46 26 57 4 30 -21 22 40 23 31 54 21 6 -25 56 29 45 -21 27 0 57 39 8 -21 19 1 56 2 32 -21 30 53 58 6 4 -21 16 39 57 19 52 -17 38 2 23 32 5 25 6 -27 56 46 2 -17 41 26 57 53 37 -17 35 13 56 19 34 -17 44 29 58 19 52 -17 33 24 57 31 21 -14 21 44 23 32 17 28 6 -29 56 58 8 -14 24 32 58 4 29 -14 19 25 56 32 10 -14 27 5 58 30 17 -14 17 57 57 40 17 -11 24 39 23 32 28 31 6 -30 57 7 31 -11 27 3 58 13 0 -11 22 42 56 41 54 -11 29 14 58 38 28 -11 21 29 57 47 26 - 8 41 40 23 32 39 34 6 -32 57 14 59 - 8 43 46 58 19 51 - 8 39 59 56 49 37 - 8 45 42 58 45 5 - 8 38 57 57 53 14 - 6 9 35 23 32 51 36 6 -33 57 21 0 - 6 11 27 58 25 26 - 6 8 6 56 55 48 - 6 13 10 58 50 31 - 6 7 12 57 57 59 - 3 46 13 23 33 2 38 7 -34 57 25 53 - 3 47 53 58 30 3 - 3 44 53 57 0 48 - 3 49 27 58 55 2 - 3 44 6 58 1 53 - 1 29 59 23 33 13 41 7 -35 57 29 51 - 1 31 31 58 33 52 - 1 28 47 57 4 50 - 1 32 57 58 58 48 - 1 28 6 58 5 4 0 40 15 23 33 25 43 7 -36 57 33 4 0 38 51 58 37 3 0 41 20 57 8 4 0 37 32 59 1 57 0 41 57 58 7 40 2 45 24 23 33 36 45 7 -37 57 35 38 2 44 6 58 39 40 2 46 23 57 10 38 2 42 52 59 4 36 2 46 56 58 9 45 4 46 8 23 33 47 47 7 -38 57 37 40 4 44 56 58 41 49 4 47 3 57 12 36 4 43 46 59 6 48 4 47 33 58 11 23 6 43 3 23 33 59 49 7 -39 57 39 12 6 41 55 58 43 33 6 43 54 57 14 4 6 40 50 59 8 37 6 44 21 58 12 38 8 36 36 23 34 10 51 7 -39 57 40 18 8 35 32 58 44 56 8 37 23 57 15 4 8 34 30 59 10 6 8 37 48 58 13 31 10 27 11 23 34 21 52 8 -40 57 41 1 10 26 10 58 45 59 10 27 54 57 15 39 10 25 11 59 11 17 10 28 17 58 14 5 12 15 6 23 34 33 54 8 -40 57 41 23 12 14 9 58 46 45 12 15 47 57 15 52 12 13 12 59 12 12 12 16 7 58 14 21 14 0 39 23 34 44 56 8 -41 57 41 26 13 59 44 58 47 15 14 1 18 57 15 44 13 58 50 59 12 53 14 1 36 58 14 21 15 44 5 23 34 55 58 9 -41 57 41 11 15 43 12 58 47 30 15 44 41 57 15 17 15 42 20 59 13 21 15 44 58 58 14 6 17 25 35 23 35 7 59 9 -42 57 40 38 17 24 45 58 47 32 17 26 9 57 14 31 17 23 54 59 13 36 17 26 25 58 13 37 19 5 21 23 35 18 61 9 -42 57 39 50 19 4 33 58 47 22 19 5 54 57 13 28 19 3 44 59 13 41 19 6 9 58 12 54 20 43 34 23 35 29 63 10 -43 57 38 46 20 42 47 58 47 0 20 44 5 57 12 8 20 41 59 59 13 34 20 44 18 58 11 57 22 20 21 23 35 41 64 10 -43 57 37 27 22 19 35 58 46 26 22 20 50 57 10 32 22 18 49 59 13 19 22 21 3 58 10 49 23 55 50 23 35 52 66 11 -43 57 35 54 23 55 6 58 45 42 23 56 19 57 8 40 23 54 21 59 12 53 23 56 30 58 9 28 25 30 10 23 36 3 67 12 -43 57 34 7 25 29 27 58 44 47 25 30 37 57 6 32 25 28 42 59 12 19 25 30 48 58 7 54 27 3 26 23 36 15 69 12 -44 57 32 6 27 2 43 58 43 42 27 3 52 57 4 8 27 1 59 59 11 36 27 4 2 58 6 9 28 35 44 23 36 26 70 13 -44 57 29 50 28 35 2 58 42 27 28 36 9 57 1 29 28 34 19 59 10 45 28 36 18 58 4 12 30 7 10 23 36 37 72 14 -44 57 27 20 30 6 29 58 41 3 30 7 35 56 58 34 30 5 46 59 9 46 30 7 43 58 2 3 31 37 50 23 36 49 73 16 -44 57 24 36 31 37 9 58 39 28 31 38 14 56 55 23 31 36 27 59 8 39 31 38 22 57 59 42 33 7 47 23 37 0 75 17 -44 57 21 38 33 7 7 58 37 44 33 8 11 56 51 55 33 6 25 59 7 24 33 8 18 57 57 8 34 37 7 23 37 11 76 19 -44 57 18 24 34 36 27 58 35 50 34 37 30 56 48 11 34 35 45 59 6 1 34 37 37 57 54 21 36 5 53 23 37 23 77 21 -44 57 14 55 36 5 14 58 33 46 36 6 17 56 44 8 36 4 31 59 4 30 36 6 23 57 51 21 37 34 11 23 37 34 79 23 -44 57 11 9 37 33 31 58 31 32 37 34 34 56 39 46 37 32 49 59 2 52 37 34 40 57 48 7 39 2 3 23 37 45 80 27 -44 57 7 6 39 1 23 58 29 7 39 2 26 56 35 5 39 0 40 59 1 5 39 2 32 57 44 38 40 29 34 23 37 57 81 31 -44 57 2 45 40 28 54 58 26 30 40 29 57 56 30 3 40 28 10 58 59 9 40 30 2 57 40 54 41 56 47 23 38 8 82 37 -43 56 58 4 41 56 6 58 23 42 41 57 9 56 24 39 41 55 22 58 57 5 41 57 15 57 36 53 43 23 45 23 38 19 83 45 -43 56 53 3 43 23 4 58 20 42 43 24 8 56 18 51 43 22 19 58 54 51 43 24 13 57 32 34 44 50 32 23 38 31 84 57 -43 56 47 39 44 49 50 58 17 28 44 50 56 56 12 36 44 49 5 58 52 28 44 51 1 57 27 56 46 17 12 23 38 42 84 71 -43 56 41 51 46 16 29 58 13 59 46 17 36 56 5 54 46 15 42 58 49 54 46 17 41 57 22 56 47 43 47 23 38 54 84 89 -43 56 35 36 47 43 3 58 10 16 47 44 11 55 58 40 47 42 15 58 47 9 47 44 17 57 17 34 49 10 21 23 39 5 84 107 -42 56 28 52 49 9 36 58 6 15 49 10 46 55 50 53 49 8 46 58 44 12 49 10 52 57 11 46 50 36 57 23 39 16 84 122 -42 56 21 36 50 36 10 58 1 56 50 37 24 55 42 28 50 35 19 58 41 2 50 37 30 57 5 31 52 3 39 23 39 28 83 133 -42 56 13 44 52 2 50 57 57 16 52 4 6 55 33 21 52 1 58 58 37 37 52 4 13 56 58 43 53 30 30 23 39 39 82 141 -41 56 5 12 53 29 39 57 52 14 53 30 58 55 23 28 53 28 44 58 33 57 53 31 5 56 51 20 54 57 33 23 39 50 81 147 -41 55 55 55 54 56 39 57 46 45 54 58 3 55 12 41 54 55 42 58 29 58 54 58 10 56 43 17 56 24 51 23 40 2 79 151 -40 55 45 46 56 23 55 57 40 48 56 25 23 55 0 54 56 22 55 58 25 39 56 25 32 56 34 28 57 52 29 23 40 13 78 154 -40 55 34 39 57 51 29 57 34 18 57 53 3 54 47 59 57 50 26 58 20 57 57 53 12 56 24 46 59 20 29 23 40 24 77 157 -39 55 22 23 59 19 26 57 27 9 59 21 6 54 33 44 59 18 19 58 15 48 59 21 16 56 14 3 60 48 56 23 40 36 76 159 -39 55 8 49 60 47 49 57 19 17 60 49 36 54 17 57 60 46 37 58 10 9 60 49 48 56 2 7 62 17 54 23 40 47 74 160 -38 54 53 42 62 16 41 57 10 32 62 18 37 54 0 22 62 15 25 58 3 54 62 18 50 55 48 45 63 47 26 23 40 58 73 162 -38 54 36 46 63 46 8 57 0 46 63 48 13 53 40 39 63 44 45 57 56 57 63 48 28 55 33 41 65 17 36 23 41 10 71 163 -37 54 17 37 65 16 12 56 49 47 65 18 28 53 18 21 65 14 43 57 49 8 65 18 46 55 16 32 66 48 31 23 41 21 70 163 -36 53 55 50 66 46 58 56 37 17 66 49 28 52 52 57 66 45 21 57 40 18 66 49 49 54 56 49 68 20 13 23 41 32 68 164 -36 53 30 45 68 18 31 56 22 58 68 21 17 52 23 43 68 16 45 57 30 11 68 21 41 54 33 53 69 52 48 23 41 44 67 165 -35 53 1 34 69 50 55 56 6 20 69 54 1 51 49 42 69 48 58 57 18 29 69 54 29 54 6 52 71 26 22 23 41 55 65 165 -34 52 27 9 71 24 14 55 46 46 71 27 44 51 9 35 71 22 4 57 4 45 71 28 17 53 34 30 73 0 59 23 42 6 64 165 -33 51 45 56 72 58 34 55 23 21 73 2 34 50 21 32 72 56 7 56 48 22 73 3 13 52 54 59 74 36 44 23 42 18 62 165 -33 50 55 36 74 33 59 54 54 47 74 38 35 49 22 55 74 31 12 56 28 24 74 39 23 52 5 34 76 13 45 23 42 29 61 164 -32 49 52 43 76 10 32 54 19 5 76 15 56 48 9 45 76 7 18 56 3 30 76 16 54 51 1 56 77 52 4 23 42 40 59 164 -31 48 31 52 77 48 15 53 33 5 77 54 41 46 35 50 77 44 27 55 31 27 77 55 55 49 36 50 79 31 44 23 42 52 57 163 -30 46 44 3 79 27 7 52 31 28 79 34 59 44 30 58 79 22 33 54 48 32 79 36 32 47 37 9 81 12 45 23 43 3 56 161 -29 44 13 11 81 6 57 51 4 31 81 16 52 41 37 8 81 1 18 53 47 55 81 18 54 44 36 36 82 54 51 23 43 14 54 159 -28 40 27 48 82 47 17 48 52 27 83 0 20 37 19 48 82 40 1 52 15 32 83 3 7 39 34 44 84 37 15 23 43 26 52 154 -27 34 18 34 84 26 47 45 8 7 84 45 2 30 25 49 84 16 56 49 37 21 84 49 8 29 42 18 86 17 11 23 43 37 50 144 -26 22 48 56 86 1 23 37 28 50 86 29 31 18 3 37 85 47 4 44 5 20 86 36 22 5 16 10 87 42 34 23 43 48 48 120 -25 - 1 52 38 87 16 43 15 22 23 88 5 31 - 6 4 15 86 55 18 26 8 38 88 20 6 - 48 17 42 88 2 0 23 44 0 46 67 -24 - 45 22 19 87 30 50 - 53 27 6 88 32 32 - 43 53 1 87 6 16 - 60 57 0 88 55 19 - 84 34 11 86 47 0 23 44 11 44 31 -23 - 78 3 9 86 25 2 - 92 39 42 87 5 36 - 73 53 33 86 6 8 -100 9 39 87 17 2 - 98 22 4 84 56 46 23 44 22 42 17 -22 - 93 13 30 84 41 10 -104 1 45 85 9 23 - 89 35 11 84 27 11 -108 45 54 85 16 53 -104 48 35 82 53 31 23 44 34 40 11 -20 -100 53 17 82 41 17 -108 56 50 83 3 18 - 97 59 44 82 30 11 -112 18 1 83 9 9 -108 27 15 80 41 23 23 44 45 38 8 -19 -105 21 46 80 31 5 -111 39 16 80 49 39 -103 2 16 80 21 42 -114 12 46 80 54 39 -110 47 2 78 20 46 23 44 56 36 6 -18 -108 16 5 78 11 37 -113 21 43 78 28 10 -106 21 23 78 3 18 -115 24 31 78 32 40 -112 23 56 75 50 41 23 45 8 33 4 -16 -110 18 4 75 42 14 -114 32 10 75 57 35 -108 41 50 75 34 34 -116 13 32 76 1 51 -113 35 4 73 9 13 23 45 19 30 3 -14 -111 48 13 73 1 7 -115 23 32 73 15 53 -110 26 11 72 53 48 -116 49 4 73 20 4 -114 29 34 70 13 15 23 45 30 27 2 -12 -112 57 41 70 5 13 -116 2 37 70 19 55 -111 46 57 69 58 0 -117 15 52 70 24 10 -115 12 43 66 57 41 23 45 42 24 2 -10 -113 53 2 66 49 24 -116 33 17 67 4 37 -112 51 36 66 42 1 -117 36 38 67 9 6 -115 47 52 63 13 18 23 45 53 20 1 -8 -114 38 31 63 4 19 -116 57 56 63 20 55 -113 45 0 62 56 20 -117 52 59 63 25 53 -116 17 17 58 40 15 23 46 4 16 1 -5 -115 17 8 58 29 32 -117 18 3 58 49 22 -114 30 43 58 20 5 -118 5 48 58 55 25 -116 43 2 52 13 6 23 46 16 9 1 -1 -115 52 4 51 56 20 -117 34 38 52 27 24 -115 12 50 51 41 25 -118 15 16 52 36 54 Data for the target star ------------------------ * name: TYC 3442-00253-1 * constellation : Ursa Major * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 10 38 31.3988 DE: +47 27 36.156 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .017, .016 ) * V mag [mag]: 12.1 * B mag [mag]: 12.8 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (772) Tanete approx. diameter [km]: 118 approx. diameter ["]: .074 distance from Earth [AU]: 2.20100 * orbital information: orbit source: Preston date of fit: 2007 Dec 18 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 632 number of rejected observations: 60 time covered by the observations: 1915 Apr 20 - 2007 Dec 17 1 sigma uncertainty ellipse (major, minor, PA): 0.024, 0.017, 114° remarks: * orbital elements for (772) Tanete : Mean anomaly = 293.82231804 deg Arg. of pericenter = 142.24922288 deg Long. of node = 64.04172388 deg Inclination = 28.78187239 deg Eccentricity = 0.09188382 Semimajor axis = 3.00301937 AU Perihelion dist = 2.72709048 AU Mag: H = 8.36, G = 0.15 Epoch of elements : MJD 54466.98500000 TDT (2008 Jan 01.985) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Jan 01 772 Tanete 23h 38.9m UT 12.1 10 38 31.399 47 27 36.16TYC 3442-00253-1 12.8 13.2 118 8.3 2.201 0.211 31.83 63.907 47.451 186.17 -22.99 23.6482 -.07807 .00550 0.54046 7.96670 -0.00469 -0.00056 2000 292.49939820071226.00000142.249223 64.041724 28.7818720.091883823.003019372.727090488.335 0.15 RATE 1.8939430 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.029 0.023 106.2 1.390 0.029 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2007 Dec 19, 03:53 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org