IOTA/IOTA-ES occultation update for (3051) Nantong / TYC 2315-00658-1 event on 2007 Sep 01, 14:28 UT Visible from Russia, Japan, Australia Summary ------- On 2007 Sep 01 UT, the 16 km diameter asteroid (3051) Nantong will occult a 10.4 mag star in the constellation Triangulum for observers along a path across Russia, Japan, Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 5.5 mag to 15.9 mag (the magnitude of the asteroid) for at most 2.0 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: 10 * date and approx. time of event: 2007 Sep 01, 14:16 - 2007 Sep 01, 14:38 UT * magnitude of target star: 10.4 * magnitude drop [mag]: 5.5 * estimated maximum duration [s]: 2.0 * Moon: 77 % sunlit, 16° distance * Sun: 118° distance * rough path description: Russia, Japan, Australia The occultation path -------------------- * approximate projected width [km]: 19 * 1 sigma uncertainty interval [path widths]: +/- 6.77 * 1 sigma uncertainty interval [seconds]: +/- 12.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .141 +/- .091) * 1 sigma uncertainty ellipse (major, minor, PA): ( .142", .089", 81° ) * approx speed of asteroid's shadow [km/s]: 7.9161 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2315-00658-1 by 3051 Nantong on 2007 Sep 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 ... .. .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. .. 127 14 6 -19 24 12 128 18 55 -16 26 46 14 16 53 10 50 -71 128 5 42 -16 32 53 128 31 52 -16 20 50 124 26 11 -18 25 6 131 8 6 -15 14 26 131 19 42 -12 57 40 14 17 10 15 49 -75 131 9 52 -13 1 21 131 29 27 -12 54 4 128 45 30 -13 59 17 133 33 35 -12 11 11 133 25 38 -10 10 11 14 17 27 18 49 -78 133 17 10 -10 12 50 133 34 2 -10 7 35 131 16 40 -10 53 16 135 23 11 - 9 35 49 135 4 12 - 7 44 3 14 17 44 21 49 -80 134 56 31 - 7 46 7 135 11 51 - 7 42 1 133 8 35 - 8 17 11 136 52 4 - 7 17 0 136 25 43 - 5 31 34 14 18 1 24 49 -81 136 18 33 - 5 33 14 136 32 52 - 5 29 54 134 38 30 - 5 58 18 138 7 6 - 5 9 30 137 35 22 - 3 28 46 14 18 18 26 49 -81 137 28 33 - 3 30 10 137 42 10 - 3 27 23 135 53 56 - 3 50 59 139 12 7 - 3 10 23 138 36 9 - 1 33 20 14 18 34 28 49 -80 138 29 36 - 1 34 31 138 42 41 - 1 32 10 136 58 57 - 1 52 10 140 9 27 - 1 17 46 139 30 2 0 16 17 14 18 51 30 50 -80 139 23 41 0 15 16 139 36 23 0 17 17 137 56 2 0 0 6 141 0 41 0 29 36 140 18 21 2 1 9 14 19 8 32 50 -79 140 12 9 2 0 16 140 24 32 2 2 1 138 46 49 1 47 6 141 46 55 2 12 38 141 2 3 3 42 3 14 19 25 33 51 -77 140 55 58 3 41 17 141 8 6 3 42 49 139 32 27 3 29 46 142 28 58 3 51 59 141 41 50 5 19 35 14 19 42 35 51 -76 141 35 52 5 18 55 141 47 48 5 20 15 140 13 47 5 8 47 143 7 28 5 28 13 142 18 17 6 54 13 14 19 59 37 52 -75 142 12 23 6 53 38 142 24 10 6 54 48 140 51 26 6 44 42 143 42 53 7 1 43 142 51 48 8 26 20 14 20 15 38 53 -73 142 45 58 8 25 49 142 57 38 8 26 50 141 25 55 8 17 54 144 15 36 8 32 51 143 22 44 9 56 13 14 20 32 39 54 -72 143 16 57 9 55 45 143 28 31 9 56 39 141 57 36 9 48 44 144 45 56 10 1 52 143 51 23 11 24 8 14 20 49 41 54 -70 143 45 38 11 23 44 143 57 8 11 24 31 142 26 47 11 17 30 145 14 8 11 29 1 144 17 57 12 50 18 14 21 6 42 55 -69 144 12 13 12 49 57 144 23 41 12 50 38 142 53 46 12 44 25 145 40 23 12 54 30 144 42 39 14 14 54 14 21 23 43 56 -68 144 36 56 14 14 35 144 48 21 14 15 12 143 18 43 14 9 41 146 4 53 14 18 30 145 5 37 15 38 5 14 21 39 44 57 -66 144 59 54 15 37 49 145 11 19 15 38 21 143 41 49 15 33 28 146 27 47 15 41 8 145 26 59 17 0 0 14 21 56 45 58 -65 145 21 17 16 59 46 145 32 41 17 0 13 144 3 13 16 55 56 146 49 11 17 2 33 145 46 53 18 20 46 14 22 13 46 59 -63 145 41 10 18 20 34 145 52 36 18 20 58 144 23 3 18 17 12 147 9 12 18 22 51 146 5 24 19 40 30 14 22 30 47 61 -62 145 59 41 19 40 20 146 11 8 19 40 40 144 41 24 19 37 22 147 27 56 19 42 10 146 22 38 20 59 17 14 22 47 48 62 -61 146 16 53 20 59 9 146 28 22 20 59 25 144 58 21 20 56 34 147 45 27 21 0 34 146 38 37 22 17 13 14 23 4 49 63 -59 146 32 51 22 17 6 146 44 23 22 17 19 145 13 59 22 14 52 148 1 48 22 18 9 146 53 26 23 34 22 14 23 20 50 64 -58 146 47 38 23 34 16 146 59 14 23 34 27 145 28 22 23 32 21 148 17 4 23 34 59 147 7 7 24 50 48 14 23 37 51 66 -57 147 1 17 24 50 44 147 12 57 24 50 52 145 41 33 24 49 6 148 31 17 24 51 7 147 19 43 26 6 37 14 23 54 51 67 -56 147 13 50 26 6 34 147 25 36 26 6 40 145 53 34 26 5 12 148 44 29 26 6 39 147 31 16 27 21 51 14 24 11 52 69 -54 147 25 20 27 21 49 147 37 11 27 21 53 146 4 26 27 20 41 148 56 43 27 21 38 147 41 47 28 36 34 14 24 28 53 70 -53 147 35 48 28 36 32 147 47 45 28 36 34 146 14 12 28 35 38 149 7 59 28 36 7 147 51 17 29 50 48 14 24 45 53 72 -52 147 45 15 29 50 48 147 57 19 29 50 48 146 22 52 29 50 6 149 18 19 29 50 9 147 59 47 31 4 38 14 25 1 54 73 -51 147 53 41 31 4 39 148 5 53 31 4 37 146 30 28 31 4 8 149 27 44 31 3 47 148 7 18 32 18 6 14 25 18 54 75 -49 148 1 8 32 18 7 148 13 27 32 18 4 146 36 58 32 17 46 149 36 14 32 17 4 148 13 48 33 31 14 14 25 35 55 77 -48 148 7 34 33 31 16 148 20 2 33 31 12 146 42 24 33 31 4 149 43 49 33 30 2 148 19 19 34 44 5 14 25 52 55 78 -47 148 12 59 34 44 8 148 25 38 34 44 2 146 46 44 34 44 3 149 50 29 34 42 44 148 23 48 35 56 42 14 26 9 55 80 -46 148 17 24 35 56 45 148 30 12 35 56 39 146 49 58 35 56 47 149 56 14 35 55 13 148 27 16 37 9 7 14 26 26 56 82 -44 148 20 46 37 9 11 148 33 45 37 9 3 146 52 3 37 9 19 150 1 2 37 7 31 148 29 40 38 21 22 14 26 42 56 84 -43 148 23 3 38 21 26 148 36 15 38 21 17 146 52 59 38 21 39 150 4 53 38 19 39 148 30 58 39 33 29 14 26 59 56 86 -42 148 24 15 39 33 33 148 37 40 39 33 24 146 52 42 39 33 50 150 7 45 39 31 41 148 31 8 40 45 30 14 27 16 56 87 -41 148 24 18 40 45 35 148 37 57 40 45 26 146 51 10 40 45 55 150 9 35 40 43 38 148 30 7 41 57 28 14 27 33 56 89 -40 148 23 10 41 57 33 148 37 3 41 57 23 146 48 20 41 57 55 150 10 22 41 55 33 148 27 51 43 9 25 14 27 50 56 91 -38 148 20 46 43 9 30 148 34 56 43 9 20 146 44 6 43 9 52 150 10 2 43 7 27 148 24 17 44 21 22 14 28 7 56 93 -37 148 17 3 44 21 27 148 31 30 44 21 16 146 38 25 44 21 48 150 8 32 44 19 22 148 19 18 45 33 21 14 28 23 56 95 -36 148 11 55 45 33 26 148 26 41 45 33 16 146 31 11 45 33 46 150 5 47 45 31 21 148 12 50 46 45 24 14 28 40 56 96 -35 148 5 17 46 45 29 148 20 23 46 45 19 146 22 17 46 45 46 150 1 43 46 43 25 148 4 46 47 57 33 14 28 57 56 98 -34 147 57 3 47 57 38 148 12 30 47 57 29 146 11 35 47 57 51 149 56 14 47 55 36 147 54 58 49 9 51 14 29 14 56 100 -32 147 47 3 49 9 55 148 2 53 49 9 46 145 58 57 49 10 2 149 49 13 49 7 57 147 43 17 50 22 17 14 29 31 55 101 -31 147 35 10 50 22 21 147 51 25 50 22 13 145 44 13 50 22 20 149 40 32 50 20 28 147 29 33 51 34 55 14 29 47 55 103 -30 147 21 12 51 34 59 147 37 54 51 34 52 145 27 10 51 34 48 149 30 3 51 33 13 147 13 33 52 47 47 14 30 4 55 104 -29 147 4 57 52 47 49 147 22 8 52 47 44 145 7 35 52 47 26 149 17 34 52 46 13 146 55 2 54 0 52 14 30 21 54 106 -28 146 46 10 54 0 54 147 3 54 54 0 50 144 45 11 54 0 17 149 2 53 53 59 29 146 33 45 55 14 14 14 30 38 54 107 -27 146 24 35 55 14 14 146 42 53 55 14 13 144 19 39 55 13 20 148 45 45 55 13 4 146 9 20 56 27 53 14 30 55 53 108 -25 145 59 52 56 27 52 146 18 48 56 27 53 143 50 38 56 26 38 148 25 53 56 26 59 145 41 24 57 41 50 14 31 12 52 109 -24 145 31 35 57 41 48 145 51 13 57 41 52 143 17 40 57 40 10 148 2 56 57 41 16 145 9 30 58 56 7 14 31 28 52 110 -23 144 59 18 58 56 3 145 19 41 58 56 11 142 40 14 58 53 57 147 36 29 58 55 56 144 33 3 60 10 45 14 31 45 51 111 -22 144 22 26 60 10 38 144 43 39 60 10 51 141 57 43 60 7 59 147 6 3 60 11 1 143 51 23 61 25 43 14 32 2 50 112 -20 143 40 19 61 25 33 144 2 26 61 25 51 141 9 21 61 22 15 146 31 1 61 26 32 143 3 40 62 41 0 14 32 19 49 113 -19 142 52 5 62 40 48 143 15 14 62 41 12 140 14 14 62 36 44 145 50 40 62 42 29 142 8 54 63 56 37 14 32 36 49 113 -18 141 56 45 63 56 22 142 21 2 63 56 52 139 11 16 63 51 24 145 4 6 63 58 53 141 5 50 65 12 31 14 32 53 48 113 -17 140 53 4 65 12 11 141 18 36 65 12 50 137 59 5 65 6 9 144 10 12 65 15 42 139 52 57 66 28 38 14 33 9 47 113 -15 139 39 28 66 28 13 140 6 25 66 29 2 136 36 2 66 20 55 143 7 35 66 32 56 138 28 18 67 44 52 14 33 26 46 113 -14 138 14 2 67 44 21 138 42 33 67 45 23 135 0 3 67 35 32 141 54 30 67 50 31 136 49 27 69 1 5 14 33 43 45 113 -13 136 34 18 69 0 27 137 4 36 69 1 43 133 8 33 68 49 49 140 28 42 69 8 21 134 53 19 70 17 4 14 34 0 44 112 -11 134 37 11 70 16 16 135 9 27 70 17 50 130 58 20 70 3 28 138 47 18 70 26 18 132 35 56 71 32 29 14 34 17 43 111 -10 132 18 41 71 31 31 132 53 11 71 33 27 128 25 23 71 16 4 136 46 33 71 44 9 129 52 14 72 46 54 14 34 34 41 109 -9 129 33 46 72 45 43 130 10 43 72 48 5 125 24 40 72 27 3 134 21 32 73 1 32 126 35 44 73 59 39 14 34 50 40 107 -7 126 15 55 73 58 11 126 55 34 74 1 5 121 50 2 73 35 35 131 25 42 74 17 58 122 38 14 75 9 44 14 35 7 39 104 -6 122 17 2 75 7 56 122 59 29 75 11 31 117 34 7 74 40 32 127 50 30 75 32 40 117 49 47 76 15 47 14 35 24 37 100 -4 117 27 14 76 13 33 118 12 25 76 17 58 112 28 40 75 40 19 123 24 44 76 44 28 111 59 5 77 15 46 14 35 41 36 95 -3 111 35 26 77 13 2 112 22 51 77 18 28 106 25 27 76 32 45 117 54 23 77 51 35 104 55 17 78 6 54 14 35 58 35 88 -1 104 31 8 78 3 34 105 19 36 78 10 12 99 18 25 77 15 1 111 3 29 78 51 25 96 32 11 78 45 29 14 36 15 33 81 0 96 8 36 78 41 27 96 55 57 78 49 30 91 7 27 77 43 34 102 37 44 79 40 14 86 54 56 79 7 6 14 36 31 31 72 2 86 33 29 79 2 19 87 16 35 79 11 51 82 2 49 77 54 31 92 32 57 80 13 8 76 26 31 79 7 9 14 36 48 29 62 3 76 8 52 79 1 37 76 44 21 79 12 40 72 27 16 77 44 2 81 7 33 80 24 32 65 46 37 78 41 56 14 37 5 27 52 5 65 33 52 78 35 43 65 59 30 78 48 7 62 52 29 77 9 5 69 8 46 80 9 34 55 39 2 77 49 15 14 37 22 25 43 7 55 31 14 77 42 26 55 46 53 77 56 2 53 49 31 76 7 32 57 38 44 79 25 30 46 35 39 76 28 6 14 37 39 23 34 9 46 31 58 76 20 44 46 39 18 76 35 27 45 39 40 74 37 32 47 26 25 78 11 56 38 49 23 74 37 17 14 37 55 20 27 11 38 48 37 74 29 16 38 50 5 74 45 15 38 31 15 72 35 56 38 52 4 76 29 13 32 17 45 72 12 52 14 38 12 18 21 13 32 18 41 72 3 55 32 16 43 72 21 46 32 21 28 69 55 3 31 52 17 74 16 5 26 49 9 69 3 30 14 38 29 14 16 16 26 50 43 68 52 49 26 47 28 69 14 4 26 58 26 66 12 40 26 12 7 71 26 35 22 4 23 64 30 41 14 38 46 9 12 19 22 5 6 64 15 6 22 3 28 64 45 51 21 40 21 59 25 43 21 32 49 67 42 6 Data for the target star ------------------------ * name: TYC 2315-00658-1 * constellation : Triangulum * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 01 50 13.1983 DE: +34 04 22.433 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .016, .016 ) * V mag [mag]: 10.4 * B mag [mag]: 11.2 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3051) Nantong approx. diameter [km]: 16 approx. diameter ["]: .018 distance from Earth [AU]: 1.23100 * orbital information: orbit source: Preston date of fit: 2007 Aug 28 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 351 number of rejected observations: 16 time covered by the observations: 1953 Dec 07 - 2007 Aug 26 1 sigma uncertainty ellipse (major, minor, PA): 0.141, 0.088, 81° remarks: * orbital elements for (3051) Nantong : Mean anomaly = 358.08495252 deg Arg. of pericenter = 93.55062526 deg Long. of node = 280.24481306 deg Inclination = 13.35142929 deg Eccentricity = 0.25736653 Semimajor axis = 2.59383800 AU Perihelion dist = 1.92627091 AU Mag: H = 12.31, G = 0.15 Epoch of elements : MJD 54344.60300000 TDT (2007 Sep 01.603) ------ occelmnt file for Occult BEGIN ----------------------------------- 2007 Sep 01 3051 Nantong 14h 27.8m UT 10.4 1 50 13.198 34 4 22.43TYC 2315-00658-1 11.2 15.9 16 2.0 1.231 1.197 28.23 -169.776 34.066 -36.93 8.28 14.4638 -.48771 .25831 2.08430 3.95210 -0.00368 -0.00250 2000 356.9989502007 828.00000 93.550625280.244813 13.3514290.257366532.593838001.9262709112.85 0.15 RATE 2.3593360 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.142 0.089 81.1 7.770 0.121 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2007 Aug 28, 22:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org