本帖最后由 活动星图 于 2010-9-10 14:19 编辑
http://asteroidoccultation.com/2010_09/0915_2753_22312.htm
http://asteroidoccultation.com/2 ... 3_22312_Summary.txt
IOTA/IOTA-ES occultation update for
(2753) Duncan / HIP 112168 event on 2010 Sep 15, 13:51 UT
Visible from Japan, China
Summary
-------
On 2010 Sep 15 UT, the 18 km diameter asteroid (2753) Duncan will occult a 6.8
mag star in the constellation Aquarius for observers along a path across Japan,
China.
In the case of an occultation, the combined light of the asteroid and the star
will drop by 9.5 mag to 16.3 mag (the magnitude of the asteroid) for at most 1.5
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: 17
* date and approx. time of event: 2010 Sep 15, 13:46 - 2010 Sep 15, 13:57 UT
* magnitude of target star: 6.8
* magnitude drop [mag]: 9.5
* estimated maximum duration [s ]: 1.5
* Moon: 53 % sunlit, 73° distance
* Sun: 167° distance
* rough path description: Japan, China
Additional comments
-------------------
3" multiple star sysstem
The occultation path
--------------------
* approximate projected width [km]: 29
* 1 sigma uncertainty interval [path widths]: +/- 3.99
* 1 sigma uncertainty interval [seconds]: +/- 8.6
* 1 sigma uncertainty interval approx RA,DE ["]: (+/- .072 +/- .056)
* 1 sigma uncertainty ellipse (major, minor, PA): ( .076", .049", 63° )
* approx speed of asteroid's shadow [km/s]: 11.6725
* website for maps:
http://www.asteroidoccultation.com
Path Coordinates:
Occultation of HIP 112168 by 2753 Duncan on 2010 Sep 15
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
62 0 0 38 13 30 13 57 29 6 106 0 38 21 24 38 5 37 39 25 20 .. .. ..
63 0 0 38 7 16 13 57 27 7 106 -1 38 15 10 37 59 23 39 19 1 36 57 20
64 0 0 38 1 20 13 57 26 8 107 -2 38 9 13 37 53 28 39 13 1 36 51 29
65 0 0 37 55 43 13 57 24 9 108 -3 38 3 36 37 47 51 39 7 20 36 45 55
66 0 0 37 50 24 13 57 22 10 108 -3 37 58 17 37 42 33 39 1 57 36 40 41
67 0 0 37 45 25 13 57 20 10 109 -4 37 53 17 37 37 34 38 56 54 36 35 44
68 0 0 37 40 44 13 57 18 11 110 -5 37 48 36 37 32 54 38 52 9 36 31 7
69 0 0 37 36 22 13 57 15 12 110 -6 37 44 13 37 28 32 38 47 44 36 26 48
70 0 0 37 32 19 13 57 13 13 111 -7 37 40 10 37 24 29 38 43 38 36 22 48
71 0 0 37 28 35 13 57 10 13 111 -7 37 36 26 37 20 46 38 39 51 36 19 7
72 0 0 37 25 10 13 57 7 14 112 -8 37 33 1 37 17 21 38 36 23 36 15 45
73 0 0 37 22 4 13 57 4 15 113 -9 37 29 54 37 14 16 38 33 15 36 12 41
74 0 0 37 19 18 13 57 1 16 113 -10 37 27 8 37 11 29 38 30 26 36 9 57
75 0 0 37 16 50 13 56 58 16 114 -10 37 24 40 37 9 2 38 27 56 36 7 32
76 0 0 37 14 42 13 56 55 17 115 -11 37 22 32 37 6 54 38 25 46 36 5 25
77 0 0 37 12 53 13 56 51 18 115 -12 37 20 42 37 5 5 38 23 55 36 3 38
78 0 0 37 11 23 13 56 47 18 116 -13 37 19 12 37 3 36 38 22 24 36 2 9
79 0 0 37 10 13 13 56 43 19 117 -14 37 18 1 37 2 25 38 21 12 36 1 0
80 0 0 37 9 21 13 56 39 20 118 -14 37 17 10 37 1 34 38 20 19 36 0 10
81 0 0 37 8 49 13 56 35 21 118 -15 37 16 38 37 1 2 38 19 46 35 59 38
82 0 0 37 8 36 13 56 31 21 119 -16 37 16 24 37 0 49 38 19 32 35 59 26
83 0 0 37 8 42 13 56 27 22 120 -17 37 16 30 37 0 55 38 19 38 35 59 32
84 0 0 37 9 7 13 56 22 23 121 -17 37 16 55 37 1 20 38 20 3 35 59 58
85 0 0 37 9 51 13 56 17 23 121 -18 37 17 40 37 2 4 38 20 47 36 0 42
86 0 0 37 10 54 13 56 13 24 122 -19 37 18 43 37 3 7 38 21 50 36 1 45
87 0 0 37 12 17 13 56 8 25 123 -19 37 20 5 37 4 29 38 23 13 36 3 7
88 0 0 37 13 58 13 56 3 25 124 -20 37 21 46 37 6 10 38 24 54 36 4 48
89 0 0 37 15 57 13 55 58 26 124 -21 37 23 46 37 8 10 38 26 55 36 6 47
90 0 0 37 18 16 13 55 52 26 125 -22 37 26 5 37 10 29 38 29 14 36 9 5
91 0 0 37 20 53 13 55 47 27 126 -22 37 28 42 37 13 6 38 31 53 36 11 41
92 0 0 37 23 49 13 55 42 28 127 -23 37 31 38 37 16 2 38 34 50 36 14 36
93 0 0 37 27 4 13 55 36 28 128 -24 37 34 53 37 19 16 38 38 6 36 17 49
94 0 0 37 30 37 13 55 30 29 129 -24 37 38 26 37 22 49 38 41 41 36 21 20
95 0 0 37 34 28 13 55 25 29 130 -25 37 42 18 37 26 40 38 45 34 36 25 9
96 0 0 37 38 37 13 55 19 30 131 -26 37 46 27 37 30 49 38 49 46 36 29 17
97 0 0 37 43 5 13 55 13 30 131 -26 37 50 55 37 35 16 38 54 16 36 33 42
98 0 0 37 47 51 13 55 7 31 132 -27 37 55 41 37 40 2 38 59 4 36 38 25
99 0 0 37 52 54 13 55 1 31 133 -28 38 0 45 37 45 5 39 4 10 36 43 26
100 0 0 37 58 15 13 54 54 32 134 -28 38 6 6 37 50 26 39 9 34 36 48 45
101 0 0 38 3 54 13 54 48 32 135 -29 38 11 45 37 56 4 39 15 16 36 54 21
102 0 0 38 9 50 13 54 42 33 136 -30 38 17 42 38 2 0 39 21 15 37 0 14
103 0 0 38 16 4 13 54 35 33 137 -30 38 23 56 38 8 13 39 27 33 37 6 24
104 0 0 38 22 35 13 54 29 34 138 -31 38 30 27 38 14 44 39 34 7 37 12 52
105 0 0 38 29 22 13 54 22 34 139 -31 38 37 15 38 21 31 39 40 59 37 19 36
106 0 0 38 36 27 13 54 15 35 140 -32 38 44 20 38 28 35 39 48 7 37 26 37
107 0 0 38 43 48 13 54 9 35 142 -32 38 51 42 38 35 56 39 55 33 37 33 54
108 0 0 38 51 26 13 54 2 35 143 -33 38 59 20 38 43 33 40 3 15 37 41 28
109 0 0 38 59 20 13 53 55 36 144 -33 39 7 15 38 51 27 40 11 14 37 49 18
110 0 0 39 7 31 13 53 48 36 145 -34 39 15 26 38 59 37 40 19 28 37 57 24
111 0 0 39 15 57 13 53 41 36 146 -34 39 23 52 39 8 3 40 28 0 38 5 46
112 0 0 39 24 39 13 53 35 37 147 -35 39 32 35 39 16 44 40 36 47 38 14 23
113 0 0 39 33 36 13 53 28 37 148 -35 39 41 33 39 25 41 40 45 49 38 23 16
114 0 0 39 42 49 13 53 20 37 149 -36 39 50 47 39 34 53 40 55 7 38 32 24
115 0 0 39 52 17 13 53 13 37 151 -36 40 0 15 39 44 21 41 4 41 38 41 47
116 0 0 40 2 0 13 53 6 38 152 -37 40 9 59 39 54 3 41 14 29 38 51 25
117 0 0 40 11 58 13 52 59 38 153 -37 40 19 57 40 4 0 41 24 32 39 1 17
118 0 0 40 22 10 13 52 52 38 154 -38 40 30 9 40 14 11 41 34 50 39 11 24
119 0 0 40 32 36 13 52 45 38 155 -38 40 40 36 40 24 37 41 45 22 39 21 45
120 0 0 40 43 16 13 52 38 38 157 -38 40 51 17 40 35 17 41 56 9 39 32 19
121 0 0 40 54 10 13 52 31 38 158 -39 41 2 12 40 46 10 42 7 9 39 43 8
122 0 0 41 5 17 13 52 23 39 159 -39 41 13 20 40 57 17 42 18 22 39 54 9
123 0 0 41 16 38 13 52 16 39 160 -39 41 24 41 41 8 36 42 29 49 40 5 24
124 0 0 41 28 11 13 52 9 39 162 -39 41 36 15 41 20 9 42 41 29 40 16 52
125 0 0 41 39 58 13 52 2 39 163 -40 41 48 2 41 31 55 42 53 21 40 28 32
126 0 0 41 51 56 13 51 55 39 164 -40 42 0 1 41 43 52 43 5 26 40 40 24
127 0 0 42 4 7 13 51 48 39 165 -40 42 12 12 41 56 2 43 17 44 40 52 29
128 0 0 42 16 29 13 51 40 39 167 -40 42 24 35 42 8 24 43 30 13 41 4 45
129 0 0 42 29 3 13 51 33 39 168 -41 42 37 10 42 20 57 43 42 53 41 17 13
130 0 0 42 41 48 13 51 26 39 169 -41 42 49 56 42 33 42 43 55 45 41 29 52
131 0 0 42 54 44 13 51 19 38 170 -41 43 2 53 42 46 37 44 8 48 41 42 41
132 0 0 43 7 50 13 51 12 38 172 -41 43 16 0 42 59 43 44 22 1 41 55 41
133 0 0 43 21 7 13 51 5 38 173 -41 43 29 17 43 12 59 44 35 25 42 8 52
134 0 0 43 34 34 13 50 58 38 174 -41 43 42 45 43 26 25 44 48 58 42 22 12
135 0 0 43 48 10 13 50 51 38 175 -41 43 56 22 43 40 0 45 2 42 42 35 42
136 0 0 44 1 56 13 50 44 38 176 -41 44 10 8 43 53 45 45 16 34 42 49 22
137 0 0 44 15 51 13 50 37 38 178 -41 44 24 4 44 7 39 45 30 36 43 3 10
138 0 0 44 29 54 13 50 31 37 179 -41 44 38 8 44 21 41 45 44 46 43 17 7
139 0 0 44 44 5 13 50 24 37 180 -41 44 52 20 44 35 52 45 59 4 43 31 12
140 0 0 44 58 25 13 50 17 37 181 -41 45 6 40 44 50 11 46 13 30 43 45 25
141 0 0 45 12 51 13 50 11 37 183 -41 45 21 7 45 4 37 46 28 4 43 59 46
142 0 0 45 27 26 13 50 4 36 184 -41 45 35 42 45 19 10 46 42 44 44 14 14
143 0 0 45 42 7 13 49 57 36 185 -41 45 50 24 45 33 51 46 57 32 44 28 49
144 0 0 45 56 54 13 49 51 36 186 -41 46 5 12 45 48 37 47 12 26 44 43 30
145 0 0 46 11 48 13 49 45 35 187 -41 46 20 6 46 3 30 47 27 26 44 58 18
146 0 0 46 26 47 13 49 38 35 188 -41 46 35 6 46 18 29 47 42 32 45 13 11
147 0 0 46 41 51 13 49 32 35 190 -40 46 50 12 46 33 33 47 57 43 45 28 10
148 0 0 46 57 1 13 49 26 34 191 -40 47 5 22 46 48 42 48 12 58 45 43 14
149 0 0 47 12 15 13 49 20 34 192 -40 47 20 37 47 3 56 48 28 19 45 58 23
150 0 0 47 27 34 13 49 14 34 193 -40 47 35 56 47 19 13 48 43 43 46 13 36
151 0 0 47 42 56 13 49 8 33 194 -39 47 51 19 47 34 35 48 59 11 46 28 53
152 0 0 47 58 22 13 49 2 33 195 -39 48 6 45 47 50 0 49 14 43 46 44 14
153 0 0 48 13 51 13 48 56 32 196 -39 48 22 15 48 5 29 49 30 17 46 59 38
154 0 0 48 29 23 13 48 51 32 197 -39 48 37 47 48 21 0 49 45 54 47 15 5
155 0 0 48 44 57 13 48 45 31 198 -38 48 53 22 48 36 33 50 1 33 47 30 34
156 0 0 49 0 33 13 48 39 31 199 -38 49 8 58 48 52 9 50 17 14 47 46 5
157 0 0 49 16 10 13 48 34 31 200 -38 49 24 36 49 7 46 50 32 56 48 1 38
158 0 0 49 31 49 13 48 29 30 201 -37 49 40 15 49 23 24 50 48 40 48 17 13
159 0 0 49 47 28 13 48 24 30 203 -37 49 55 55 49 39 3 51 4 24 48 32 48
160 0 0 50 3 8 13 48 18 29 204 -37 50 11 36 49 54 42 51 20 8 48 48 24
161 0 0 50 18 48 13 48 13 29 205 -36 50 27 16 50 10 22 51 35 52 49 4 0
162 0 0 50 34 28 13 48 9 28 206 -36 50 42 56 50 26 1 51 51 35 49 19 37
163 0 0 50 50 7 13 48 4 28 207 -35 50 58 35 50 41 40 52 7 17 49 35 12
164 0 0 51 5 44 13 47 59 27 208 -35 51 14 13 50 57 17 52 22 58 49 50 47
165 0 0 51 21 21 13 47 54 27 208 -35 51 29 50 51 12 53 52 38 38 50 6 21
166 0 0 51 36 55 13 47 50 26 209 -34 51 45 25 51 28 27 52 54 15 50 21 53
167 0 0 51 52 28 13 47 46 26 210 -34 52 0 58 51 44 0 53 9 50 50 37 23
168 0 0 52 7 58 13 47 41 25 211 -33 52 16 28 51 59 29 53 25 23 50 52 51
169 0 0 52 23 25 13 47 37 24 212 -33 52 31 55 52 14 56 53 40 52 51 8 16
170 0 0 52 38 49 13 47 33 24 213 -32 52 47 19 52 30 20 53 56 17 51 23 38
171 0 0 52 54 9 13 47 29 23 214 -32 53 2 40 52 45 40 54 11 39 51 38 57
172 0 0 53 9 26 13 47 25 23 215 -32 53 17 56 53 0 56 54 26 57 51 54 12
173 0 0 53 24 38 13 47 21 22 216 -31 53 33 9 53 16 9 54 42 10 52 9 24
174 0 0 53 39 45 13 47 18 22 217 -31 53 48 16 53 31 16 54 57 18 52 24 31
175 0 0 53 54 48 13 47 14 21 218 -30 54 3 19 53 46 19 55 12 22 52 39 33
176 0 0 54 9 46 13 47 11 21 219 -30 54 18 17 54 1 17 55 27 19 52 54 31
177 0 0 54 24 38 13 47 7 20 220 -29 54 33 9 54 16 9 55 42 11 53 9 23
178 0 0 54 39 25 13 47 4 20 221 -29 54 47 56 54 30 55 55 56 57 53 24 10
179 0 0 54 54 5 13 47 1 19 222 -28 55 2 36 54 45 36 56 11 37 53 38 51
180 0 0 55 8 39 13 46 58 18 222 -28 55 17 10 55 0 10 56 26 10 53 53 26
-179 0 0 55 23 7 13 46 55 18 223 -27 55 31 38 55 14 38 56 40 37 54 7 55
-178 0 0 55 37 28 13 46 52 17 224 -27 55 45 58 55 28 59 56 54 56 54 22 17
-177 0 0 55 51 41 13 46 50 17 225 -26 56 0 11 55 43 13 57 9 7 54 36 32
-176 0 0 56 5 47 13 46 47 16 226 -26 56 14 17 55 57 19 57 23 12 54 50 40
-175 0 0 56 19 46 13 46 45 16 227 -25 56 28 16 56 11 18 57 37 8 55 4 41
-174 0 0 56 33 37 13 46 42 15 228 -25 56 42 6 56 25 9 57 50 56 55 18 34
-173 0 0 56 47 19 13 46 40 14 229 -24 56 55 49 56 38 52 58 4 36 55 32 20
-172 0 0 57 0 54 13 46 38 14 230 -24 57 9 23 56 52 27 58 18 7 55 45 57
-171 0 0 57 14 20 13 46 36 13 230 -23 57 22 48 57 5 53 58 31 30 55 59 26
-170 0 0 57 27 37 13 46 34 13 231 -22 57 36 5 57 19 11 58 44 43 56 12 47
-169 0 0 57 40 46 13 46 32 12 232 -22 57 49 13 57 32 20 58 57 48 56 25 59
-168 0 0 57 53 45 13 46 30 12 233 -21 58 2 12 57 45 19 59 10 43 56 39 2
-167 0 0 58 6 35 13 46 28 11 234 -21 58 15 2 57 58 10 59 23 29 56 51 56
-166 0 0 58 19 16 13 46 27 11 235 -20 58 27 42 58 10 51 59 36 5 57 4 41
-165 0 0 58 31 47 13 46 25 10 236 -20 58 40 13 58 23 23 59 48 31 57 17 16
-164 0 0 58 44 9 13 46 24 9 236 -19 58 52 34 58 35 45 60 0 48 57 29 42
-163 0 0 58 56 20 13 46 22 9 237 -19 59 4 45 58 47 57 60 12 55 57 41 59
-162 0 0 59 8 22 13 46 21 8 238 -18 59 16 46 59 0 0 60 24 51 57 54 6
-161 0 0 59 20 14 13 46 20 8 239 -18 59 28 37 59 11 52 60 36 37 58 6 2
-160 0 0 59 31 55 13 46 19 7 240 -17 59 40 18 59 23 34 60 48 13 58 17 49
-159 0 0 59 43 26 13 46 18 7 241 -17 59 51 49 59 35 6 60 59 38 58 29 26
-158 0 0 59 54 47 13 46 17 6 242 -16 60 3 9 59 46 27 61 10 53 58 40 52
-157 0 0 60 5 58 13 46 16 6 243 -16 60 14 19 59 57 38 61 21 57 58 52 8
-156 0 0 60 16 57 13 46 15 5 243 -15 60 25 18 60 8 38 61 32 50 .. .. ..
-155 0 0 60 27 46 13 46 15 5 244 -15 60 36 6 60 19 28 61 43 33 .. .. ..
-154 0 0 60 38 25 13 46 14 4 245 -14 60 46 44 60 30 7 61 54 5 .. .. ..
-153 0 0 60 48 52 13 46 13 4 246 -14 60 57 10 60 40 35 62 4 26 .. .. ..
-152 0 0 60 59 9 13 46 13 3 247 -13 61 7 26 60 50 53 62 14 36 .. .. ..
-151 0 0 61 9 14 13 46 13 3 248 -13 61 17 31 61 0 59 62 24 34 .. .. ..
-150 0 0 61 19 9 13 46 12 2 249 -12 61 27 25 61 10 54 62 34 22 .. .. ..
-149 0 0 61 28 53 13 46 12 2 250 -12 61 37 8 61 20 39 62 43 59 .. .. ..
-148 0 0 61 38 25 13 46 12 1 250 -11 61 46 40 61 30 12 62 53 25 .. .. ..
-147 0 0 61 47 47 13 46 12 1 251 -11 61 56 1 61 39 35 63 2 39 .. .. ..
-146 0 0 61 56 58 13 46 12 0 252 -10 62 5 11 61 48 46 .. .. .. .. .. ..
Uncertainty in time = +/- 9 secs
Prediction of 2010 Jul 21.0
Data for the target star
------------------------
* name: HIP 112168
* constellation : Aquarius
* J2000 position with proper motion to date of event [h,m,s ; °,',"]
RA: 22 43 03.4248 DE: -08 18 41.230
* position source: mpos:HIP2 pm:HIP2 plx:HIP2
* standard error: RA,DE ["]: ( .020, .016 )
* V mag [mag]: 6.8
* B mag [mag]: 6.6
* Diameter [mas]: 0
* remarks:
Data for the minor planet
-------------------------
* general information:
(number) name: (2753) Duncan
approx. diameter [km]: 18
approx. diameter ["]: .013
distance from Earth [AU]: 1.86200
* orbital information:
orbit source: Preston
date of fit: 2010 Jul 20
source of used astrometry: FASTT MPC (via Astdys)
number of used observations: 831
number of rejected observations: 21
time covered by the observations: 1954 Aug 27 - 2009 Jun 30
1 sigma uncertainty ellipse (major, minor, PA): 0.074, 0.047, 61°
remarks:
* orbital elements for (2753) Duncan :
Mean anomaly = 238.77067494 deg
Arg. of pericenter = 123.92899329 deg
Long. of node = 344.69876383 deg
Inclination = 6.87580743 deg
Eccentricity = 0.03782688
Semimajor axis = 2.79271768 AU
Perihelion dist = 2.68707788 AU
Mag: H = 12.25, G = 0.15
Epoch of elements : MJD 55454.57800000 TDT
(2010 Sep 15.578)
------ occelmnt file for Occult BEGIN -----------------------------------
2010 Sep 15
2753 Duncan
13h 51.9m UT
6.8 22 43 3.425- 8 18 41.23HIP 112168 6.6
16.3 18 1.5 1.862 -2.052 -6.28
138.3750 -8.309 -29.16 2.92
13.8644 -0.15631 0.76262 -6.45237 -1.33129 0.00124 0.00052
2000 237.8038692010 911.00000123.928993344.698764 6.8758070.03782688 2.7927177 2.687077912.3 5.00.15
RATE 2.1118520 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000
Meas 0.076 0.049 63 4.99 0.053 0 0-2 0 055398.0020100915_112168
------ occelmnt file for Occult END -----------------------------------
============================================
Calculator (s): Steve Preston
Date of update: 2010 Jul 20, 22:58 UT
Steve Preston
7640 NE 32nd St
Medina, WA 98039
425-688-9965
mailto: stevepr@acm.org |
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