Stellar Occultation by (177) Irma on 2011-09-13 (01:53:39 UT)
Event Details
Occultation UUID [and db] : 495f1144-c0fb-4e6e-ba57-a4eb27aa8816 [observed]
Occultation Date + Time : 2011-09-13 at 01:53:39 UT +/- 0.01 min [1]
Object Designation : (177) Irma
Star Designation : GDR3 3428617249315895808
Star Coordinates (ICRF) : RA = 05 45 30.5305, DE = +24 47 46.089 [2]
Star Magnitudes : G = 9.42 mag, RP = 9.16 mag, BP = 9.55 mag
Object Magnitude : V = 14.14 mag
Estimated Magnitude Drop : 4.7 mag
Estimated Max. Duration : 3.4 sec
Object Mean Diameter : 73 km (src: astorb)
Orbital Class : MBA
Speed of the shadow : 21.6 km/s
Elongation to Moon & Sun : 89° (sunlit = 100%), Sun = 83°
Cross-track uncertainty : 0.9 mas = 1 km = 0.02 path-width (1-sig)
RUWE and duplicate source : 7.06 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#115
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0
(If error 404: link not valid which means no data available)
Aladin Lite direct link (has Gaia overlay)
Occultation Ground Track
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Time[UT] | Lat----CENTR----Lon | Alt Azm Sun | Lat----EDGE1----Lon | Lat----EDGE2----Lon
hh:mm:ss | +DD.dddd +DDD.dddd | deg deg deg | +DD.dddd +DDD.dddd | +DD.dddd +DDD.dddd
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01:49:28 +26.5388 -032.6132 +03 064 -59 +25.6237 -035.3943 +27.3714 -029.9739
01:49:32 +29.4859 -026.5233 +09 066 -56 +29.2515 -027.9196 +29.6453 -025.2839
01:49:35 +31.1408 -023.1154 +12 068 -55 +31.0781 -024.1628 +31.1726 -022.1337
01:49:39 +32.4442 -020.4203 +15 070 -53 +32.4573 -021.3181 +32.4124 -019.5634
01:49:43 +33.5585 -018.1005 +17 071 -51 +33.6174 -018.9104 +33.4862 -017.3206
01:49:46 +34.5491 -016.0202 +19 072 -50 +34.6400 -016.7706 +34.4480 -015.2938
01:49:50 +35.4505 -014.1085 +21 074 -48 +35.5655 -014.8153 +35.3271 -013.4221
01:49:54 +36.2833 -012.3229 +22 075 -47 +36.4175 -012.9959 +36.1420 -011.6678
01:49:58 +37.0610 -010.6356 +24 076 -46 +37.2112 -011.2812 +36.9048 -010.0060
01:50:01 +37.7932 -009.0270 +25 077 -44 +37.9570 -009.6501 +37.6241 -008.4188
01:50:05 +38.4868 -007.4831 +27 078 -43 +38.6624 -008.0869 +38.3065 -006.8931
01:50:09 +39.1471 -005.9930 +28 080 -42 +39.3332 -006.5802 +38.9567 -005.4189
01:50:13 +39.7781 -004.5485 +29 081 -41 +39.9736 -005.1209 +39.5786 -003.9885
01:50:16 +40.3830 -003.1428 +30 082 -40 +40.5871 -003.7021 +40.1753 -002.5954
01:50:20 +40.9646 -001.7705 +31 083 -39 +41.1766 -002.3179 +40.7493 -001.2345
01:50:24 +41.5249 -000.4271 +33 084 -38 +41.7443 -000.9636 +41.3026 +000.0983
01:50:27 +42.0659 +000.8911 +34 085 -37 +42.2920 +000.3646 +41.8369 +001.4067
01:50:31 +42.5889 +002.1873 +35 087 -36 +42.8215 +001.6702 +42.3537 +002.6938
01:50:35 +43.0954 +003.4642 +36 088 -35 +43.3340 +002.9559 +42.8543 +003.9621
01:50:39 +43.5863 +004.7242 +37 089 -34 +43.8308 +004.2243 +43.3397 +005.2140
01:50:42 +44.0628 +005.9694 +37 090 -33 +44.3127 +005.4775 +43.8108 +006.4513
01:50:46 +44.5256 +007.2016 +38 092 -32 +44.7807 +006.7174 +44.2685 +007.6760
01:50:50 +44.9754 +008.4224 +39 093 -31 +45.2356 +007.9456 +44.7135 +008.8895
01:50:54 +45.4129 +009.6332 +40 094 -30 +45.6780 +009.1637 +45.1463 +010.0931
01:50:57 +45.8387 +010.8353 +41 095 -29 +46.1084 +010.3729 +45.5675 +011.2883
01:51:01 +46.2533 +012.0299 +42 097 -28 +46.5275 +011.5744 +45.9777 +012.4760
01:51:05 +46.6571 +013.2180 +42 098 -27 +46.9357 +012.7694 +46.3772 +013.6573
01:51:08 +47.0505 +014.4005 +43 099 -26 +47.3333 +013.9588 +46.7665 +014.8331
01:51:12 +47.4339 +015.5784 +44 101 -26 +47.7208 +015.1434 +47.1459 +016.0043
01:51:16 +47.8075 +016.7524 +45 102 -25 +48.0985 +016.3242 +47.5156 +017.1716
01:51:20 +48.1717 +017.9233 +45 104 -24 +48.4666 +017.5019 +47.8760 +018.3358
01:51:23 +48.5268 +019.0917 +46 105 -23 +48.8254 +018.6771 +48.2274 +019.4974
01:51:27 +48.8729 +020.2582 +47 106 -22 +49.1752 +019.8505 +48.5698 +020.6572
01:51:31 +49.2102 +021.4234 +47 108 -21 +49.5162 +021.0227 +48.9037 +021.8155
01:51:35 +49.5390 +022.5879 +48 109 -21 +49.8485 +022.1941 +49.2290 +022.9730
01:51:38 +49.8594 +023.7520 +48 111 -20 +50.1723 +023.3654 +49.5460 +024.1302
01:51:42 +50.1715 +024.9164 +49 113 -19 +50.4878 +024.5370 +49.8548 +025.2874
01:51:46 +50.4755 +026.0813 +50 114 -18 +50.7951 +025.7092 +50.1556 +026.4451
01:51:49 +50.7715 +027.2472 +50 116 -17 +51.0943 +026.8826 +50.4485 +027.6036
01:51:53 +51.0595 +028.4144 +51 117 -17 +51.3855 +028.0574 +50.7335 +028.7634
01:51:57 +51.3398 +029.5833 +51 119 -16 +51.6688 +029.2340 +51.0107 +029.9246
01:52:01 +51.6122 +030.7541 +52 121 -15 +51.9443 +030.4127 +51.2803 +031.0877
01:52:04 +51.8771 +031.9272 +52 122 -14 +52.2120 +031.5939 +51.5422 +032.2529
01:52:08 +52.1342 +033.1028 +53 124 -13 +52.4721 +032.7777 +51.7966 +033.4204
01:52:12 +52.3838 +034.2812 +53 126 -13 +52.7245 +033.9645 +52.0435 +034.5905
01:52:16 +52.6259 +035.4625 +54 128 -12 +52.9692 +035.1544 +52.2830 +035.7634
01:52:19 +52.8605 +036.6470 +54 130 -11 +53.2064 +036.3476 +52.5150 +036.9393
01:52:23 +53.0876 +037.8348 +54 131 -10 +53.4361 +037.5444 +52.7396 +038.1183
01:52:27 +53.3072 +039.0262 +55 133 -10 +53.6582 +038.7449 +52.9568 +039.3007
01:52:30 +53.5194 +040.2212 +55 135 -09 +53.8728 +039.9492 +53.1666 +040.4865
01:52:34 +53.7242 +041.4199 +56 137 -08 +54.0799 +041.1575 +53.3691 +041.6759
01:52:38 +53.9215 +042.6226 +56 139 -07 +54.2795 +042.3699 +53.5643 +042.8691
01:52:42 +54.1114 +043.8293 +56 141 -07 +54.4716 +043.5865 +53.7520 +044.0660
01:52:45 +54.2939 +045.0400 +56 143 -06 +54.6562 +044.8074 +53.9325 +045.2668
01:52:49 +54.4689 +046.2548 +57 145 -05 +54.8332 +046.0326 +54.1055 +046.4715
01:52:53 +54.6364 +047.4738 +57 147 -04 +55.0027 +047.2621 +54.2712 +047.6802
01:52:57 +54.7965 +048.6971 +57 149 -04 +55.1646 +048.4961 +54.4295 +048.8930
01:53:00 +54.9491 +049.9245 +57 151 -03 +55.3189 +049.7345 +54.5804 +050.1097
01:53:04 +55.0942 +051.1562 +58 153 -02 +55.4657 +050.9773 +54.7238 +051.3306
01:53:08 +55.2317 +052.3921 +58 156 -01 +55.6047 +052.2246 +54.8598 +052.5554
01:53:11 +55.3616 +053.6323 +58 158 -01 +55.7362 +053.4762 +54.9883 +053.7844
01:53:15 +55.4839 +054.8766 +58 160 +00 +55.8599 +054.7322 +55.1093 +055.0173
01:53:19 +55.5986 +056.1250 +58 162 +01 +55.9759 +055.9926 +55.2227 +056.2542
01:53:23 +55.7057 +057.3776 +58 164 +01 +56.0841 +057.2571 +55.3286 +057.4950
01:53:26 +55.8050 +058.6341 +58 167 +02 +56.1845 +058.5259 +55.4269 +058.7396
01:53:30 +55.8966 +059.8946 +59 169 +03 +56.2771 +059.7987 +55.5175 +059.9881
01:53:34 +55.9804 +061.1589 +59 171 +04 +56.3618 +061.0756 +55.6004 +061.2403
01:53:38 +56.0563 +062.4270 +59 173 +04 +56.4385 +062.3563 +55.6757 +062.4961
01:53:41 +56.1245 +063.6988 +59 176 +05 +56.5073 +063.6408 +55.7431 +063.7554
01:53:45 +56.1847 +064.9740 +59 178 +06 +56.5681 +064.9290 +55.8028 +065.0181
01:53:49 +56.2370 +066.2527 +59 180 +06 +56.6208 +066.2207 +55.8546 +066.2842
01:53:52 +56.2813 +067.5347 +59 182 +07 +56.6654 +067.5157 +55.8986 +067.5534
01:53:56 +56.3175 +068.8199 +58 185 +08 +56.7019 +068.8141 +55.9346 +068.8258
01:54:00 +56.3457 +070.1080 +58 187 +09 +56.7302 +070.1155 +55.9627 +070.1010
01:54:04 +56.3658 +071.3991 +58 189 +09 +56.7503 +071.4199 +55.9828 +071.3791
01:54:07 +56.3777 +072.6929 +58 191 +10 +56.7621 +072.7271 +55.9948 +072.6599
01:54:11 +56.3814 +073.9893 +58 194 +11 +56.7655 +074.0369 +55.9988 +073.9433
01:54:15 +56.3769 +075.2881 +58 196 +11 +56.7606 +075.3492 +55.9946 +075.2290
01:54:19 +56.3640 +076.5893 +58 198 +12 +56.7473 +076.6638 +55.9822 +076.5171
01:54:22 +56.3428 +077.8926 +57 200 +13 +56.7255 +077.9806 +55.9616 +077.8073
01:54:26 +56.3132 +079.1979 +57 202 +14 +56.6952 +079.2994 +55.9327 +079.0995
01:54:30 +56.2752 +080.5051 +57 204 +14 +56.6563 +080.6200 +55.8955 +080.3937
01:54:33 +56.2287 +081.8140 +57 207 +15 +56.6088 +081.9424 +55.8499 +081.6896
01:54:37 +56.1736 +083.1246 +56 209 +16 +56.5527 +083.2663 +55.7958 +082.9871
01:54:41 +56.1099 +084.4366 +56 211 +17 +56.4878 +084.5917 +55.7333 +084.2862
01:54:45 +56.0376 +085.7501 +56 213 +17 +56.4141 +085.9184 +55.6623 +085.5867
01:54:48 +55.9565 +087.0648 +55 215 +18 +56.3316 +087.2462 +55.5827 +086.8886
01:54:52 +55.8667 +088.3806 +55 217 +19 +56.2402 +088.5752 +55.4944 +088.1917
01:54:56 +55.7681 +089.6976 +54 219 +19 +56.1399 +089.9051 +55.3974 +089.4960
01:55:00 +55.6606 +091.0156 +54 221 +20 +56.0305 +091.2360 +55.2916 +090.8015
01:55:03 +55.5441 +092.3345 +54 223 +21 +55.9120 +092.5678 +55.1770 +092.1080
01:55:07 +55.4185 +093.6544 +53 225 +22 +55.7844 +093.9003 +55.0535 +093.4155
01:55:11 +55.2839 +094.9752 +53 227 +22 +55.6476 +095.2336 +54.9210 +094.7241
01:55:14 +55.1400 +096.2969 +52 229 +23 +55.5014 +096.5677 +54.7794 +096.0336
01:55:18 +54.9869 +097.6195 +52 231 +24 +55.3458 +097.9026 +54.6287 +097.3443
01:55:22 +54.8244 +098.9431 +51 233 +25 +55.1808 +099.2383 +54.4687 +098.6560
01:55:26 +54.6524 +100.2677 +51 234 +25 +55.0061 +100.5749 +54.2993 +099.9689
01:55:29 +54.4709 +101.5934 +50 236 +26 +54.8217 +101.9124 +54.1205 +101.2830
01:55:33 +54.2796 +102.9204 +50 238 +27 +54.6275 +103.2510 +53.9321 +102.5985
01:55:37 +54.0785 +104.2487 +49 240 +28 +54.4233 +104.5909 +53.7340 +103.9156
01:55:41 +53.8675 +105.5786 +49 242 +28 +54.2090 +105.9322 +53.5260 +105.2343
01:55:44 +53.6463 +106.9102 +48 243 +29 +53.9845 +107.2751 +53.3081 +106.5549
01:55:48 +53.4148 +108.2439 +47 245 +30 +53.7496 +108.6199 +53.0800 +107.8777
01:55:52 +53.1729 +109.5800 +47 247 +31 +53.5040 +109.9670 +52.8416 +109.2029
01:55:56 +52.9202 +110.9187 +46 248 +31 +53.2476 +111.3165 +52.5926 +110.5309
01:55:59 +52.6567 +112.2604 +45 250 +32 +52.9802 +112.6691 +52.3328 +111.8621
01:56:03 +52.3821 +113.6057 +45 252 +33 +52.7015 +114.0250 +52.0621 +113.1969
01:56:07 +52.0960 +114.9550 +44 253 +34 +52.4112 +115.3848 +51.7801 +114.5358
01:56:10 +51.7982 +116.3088 +43 255 +35 +52.1090 +116.7492 +51.4866 +115.8793
01:56:14 +51.4884 +117.6679 +43 256 +35 +51.7947 +118.1187 +51.1812 +117.2281
01:56:18 +51.1661 +119.0329 +42 258 +36 +51.4677 +119.4942 +50.8635 +118.5828
01:56:22 +50.8311 +120.4047 +41 259 +37 +51.1277 +120.8764 +50.5332 +119.9443
01:56:25 +50.4827 +121.7842 +40 261 +38 +50.7742 +122.2664 +50.1898 +121.3135
01:56:29 +50.1205 +123.1724 +39 262 +39 +50.4067 +123.6652 +49.8328 +122.6914
01:56:33 +49.7439 +124.5705 +38 264 +39 +50.0246 +125.0740 +49.4616 +124.0790
01:56:37 +49.3523 +125.9799 +38 265 +40 +49.6271 +126.4942 +49.0755 +125.4778
01:56:40 +48.9447 +127.4021 +37 267 +41 +49.2134 +127.9274 +48.6740 +126.8892
01:56:44 +48.5205 +128.8388 +36 268 +42 +48.7828 +129.3754 +48.2560 +128.3148
01:56:48 +48.0786 +130.2920 +35 270 +43 +48.3341 +130.8403 +47.8207 +129.7566
01:56:51 +47.6179 +131.7641 +34 271 +44 +47.8661 +132.3245 +47.3669 +131.2168
01:56:55 +47.1369 +133.2577 +33 272 +45 +47.3774 +133.8309 +46.8933 +132.6980
01:56:59 +46.6342 +134.7761 +32 274 +45 +46.8665 +135.3627 +46.3985 +134.2032
01:57:03 +46.1078 +136.3229 +31 275 +46 +46.3312 +136.9240 +45.8806 +135.7360
01:57:06 +45.5554 +137.9027 +29 277 +47 +45.7692 +138.5194 +45.3375 +137.3008
01:57:10 +44.9744 +139.5209 +28 278 +48 +45.1777 +140.1547 +44.7667 +138.9025
01:57:14 +44.3614 +141.1844 +27 279 +49 +44.5529 +141.8372 +44.1648 +140.5478
01:57:18 +43.7120 +142.9016 +26 281 +50 +43.8904 +143.5760 +43.5279 +142.2444
01:57:21 +43.0209 +144.6833 +24 282 +51 +43.1843 +145.3827 +42.8510 +144.0025
01:57:25 +42.2809 +146.5442 +23 284 +52 +42.4268 +147.2731 +42.1274 +145.8356
01:57:29 +41.4820 +148.5038 +21 285 +52 +41.6070 +149.2688 +41.3481 +147.7615
01:57:32 +40.6102 +150.5905 +19 287 +53 +40.7091 +151.4016 +40.5003 +149.8060
01:57:36 +39.6442 +152.8475 +17 288 +54 +39.7090 +153.7203 +39.5652 +152.0071
01:57:40 +38.5485 +155.3462 +15 290 +55 +38.5650 +156.3091 +38.5124 +154.4265
01:57:44 +37.2563 +158.2229 +12 292 +56 +37.1944 +159.3367 +37.2865 +157.1766
01:57:47 +35.6047 +161.8107 +09 294 +56 +35.3713 +163.2647 +35.7641 +160.5095
01:57:51 +32.7385 +167.8706 +03 297 +57 +35.4177 +163.1466 +33.4891 +165.3640
Longitude measured positiv to the East. Azimuth (Azm) measured from North to East.