Cora»OccDetail

Stellar Occultation by (124) Alkeste on 2025-10-23 (17:57:03 UT)

Event Details
Occultation UUID [and db] : 9d08b580-ddb8-11f0-547e-3c8bf97f8ed3 [observed] Occultation Date + Time : 2025-10-23 at 17:57:03 UT +/- 0.0 min [1] Object Designation : (124) Alkeste Star Designation : GDR3 4091887635792205696 Star Coordinates (ICRF) : RA = 18 30 18.9967, DE = -20 42 14.688 [2] Star Magnitudes : G = 11.72 mag, RP = 10.81 mag, BP = 12.59 mag Object Magnitude : V = 13.2 mag Estimated Magnitude Drop : 1.7 mag Estimated Max. Duration : 2.5 sec Speed of the shadow : 30.6 km/s Object Mean Diameter : 76.4 km (src: astorb) => apparent = 39 mas Apparent Motion : 0.9383 arcs/min @ PA = 89 deg Horizontal Parallax : 3.2540 arcs Dynamical Class : MBA Elongation to Moon & Sun : 43° (sunlit = 4%), Sun = 67° Cross-track uncertainty : 0.7 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.73 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#164 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and db] : 9d08b580-ddb8-11f0-547e-3c8bf97f8ed3 [observed] Occultation Date + Time : 2025-10-23 at 17:57:03 UT +/- 0.0 min [1] Object Designation : (124) Alkeste Star Designation : GDR3 4091887635792205696 Star Coordinates (ICRF) : RA = 18 30 18.9967, DE = -20 42 14.688 [2] Star Magnitudes : G = 11.72 mag, RP = 10.81 mag, BP = 12.59 mag Object Magnitude : V = 13.2 mag Estimated Magnitude Drop : 1.7 mag Estimated Max. Duration : 2.5 sec Speed of the shadow : 30.6 km/s Object Mean Diameter : 76.4 km (src: astorb) => apparent = 39 mas Apparent Motion : 0.9383 arcs/min @ PA = 89 deg Horizontal Parallax : 3.2540 arcs Dynamical Class : MBA Elongation to Moon & Sun : 43° (sunlit = 4%), Sun = 67° Cross-track uncertainty : 0.7 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.73 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#164 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

More Data and Informations

SiMDA \| 3D Asteroid Catalogue \| Johnston Archive \| Star at CDS (Vizier) \| JPL Small-Body Node \| Minor Planet Center \| Wikipedia

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Occultation Ground Track
------------------ Time[UT] \| Lat----CENTR----Lon \| Alt hh:mm:ss \| +DD.dddd +DDD.dddd \| deg ---------------------------------------------- 17:55:26 +52.1318 -074.4738 +05 133 +24 17:55:29 +50.4207 -070.2477 +08 137 +25 17:55:32 +49.2749 -067.2518 +10 139 +25 17:55:34 +48.3785 -064.7877 +12 141 +25 17:55:37 +47.6327 -062.6378 +13 143 +25 17:55:40 +46.9910 -060.7005 +15 144 +25 17:55:43 +46.4272 -058.9186 +16 146 +24 17:55:45 +45.9247 -057.2562 +17 147 +24 17:55:48 +45.4722 -055.6889 +18 149 +24 17:55:51 +45.0617 -054.1993 +19 150 +23 17:55:54 +44.6874 -052.7746 +19 151 +23 17:55:56 +44.3445 -051.4048 +20 152 +23 17:55:59 +44.0295 -050.0821 +21 154 +22 17:56:02 +43.7396 -048.8003 +22 155 +22 17:56:05 +43.4723 -047.5541 +22 156 +21 17:56:07 +43.2257 -046.3394 +23 157 +21 17:56:10 +42.9982 -045.1524 +23 158 +20 17:56:13 +42.7884 -043.9901 +24 159 +20 17:56:16 +42.5952 -042.8499 +24 161 +19 17:56:18 +42.4176 -041.7292 +25 162 +18 17:56:21 +42.2547 -040.6262 +25 163 +18 17:56:24 +42.1057 -039.5389 +26 164 +17 17:56:27 +41.9701 -038.4657 +26 165 +17 17:56:29 +41.8471 -037.4052 +26 166 +16 17:56:32 +41.7365 -036.3560 +27 167 +15 17:56:35 +41.6376 -035.3168 +27 168 +15 17:56:38 +41.5503 -034.2865 +27 169 +14 17:56:40 +41.4741 -033.2640 +27 170 +14 17:56:43 +41.4087 -032.2483 +27 171 +13 17:56:46 +41.3540 -031.2386 +28 172 +12 17:56:49 +41.3097 -030.2338 +28 173 +12 17:56:51 +41.2757 -029.2332 +28 175 +11 17:56:54 +41.2518 -028.2359 +28 176 +10 17:56:57 +41.2380 -027.2411 +28 177 +10 17:57:00 +41.2341 -026.2480 +28 178 +09 17:57:02 +41.2402 -025.2559 +28 179 +08 17:57:05 +41.2562 -024.2640 +28 180 +08 17:57:08 +41.2821 -023.2716 +28 181 +07 17:57:10 +41.3180 -022.2778 +28 182 +06 17:57:13 +41.3639 -021.2819 +28 183 +05 17:57:16 +41.4200 -020.2831 +28 184 +05 17:57:19 +41.4863 -019.2806 +28 185 +04 17:57:21 +41.5631 -018.2735 +27 186 +03 17:57:24 +41.6505 -017.2610 +27 187 +02 17:57:27 +41.7487 -016.2422 +27 188 +02 17:57:30 +41.8581 -015.2160 +27 189 +01 17:57:32 +41.9789 -014.1814 +27 191 +00 17:57:35 +42.1115 -013.1374 +26 192 -01 17:57:38 +42.2563 -012.0827 +26 193 -01 17:57:41 +42.4139 -011.0161 +26 194 -02 17:57:43 +42.5847 -009.9360 +25 195 -03 17:57:46 +42.7694 -008.8409 +25 196 -04 17:57:49 +42.9687 -007.7291 +25 197 -05 17:57:52 +43.1834 -006.5986 +24 198 -06 17:57:54 +43.4146 -005.4472 +24 199 -07 17:57:57 +43.6633 -004.2723 +23 200 -07 17:58:00 +43.9309 -003.0711 +22 202 -08 17:58:03 +44.2188 -001.8401 +22 203 -09 17:58:05 +44.5291 -000.5753 +21 204 -10 17:58:08 +44.8638 +000.7280 +21 205 -11 17:58:11 +45.2257 +002.0755 +20 206 -12 17:58:14 +45.6182 +003.4745 +19 208 -13 17:58:16 +46.0455 +004.9338 +18 209 -14 17:58:19 +46.5130 +006.4650 +17 210 -15 17:58:22 +47.0280 +008.0832 +16 212 -16 17:58:25 +47.6004 +009.8096 +15 213 -18 17:58:27 +48.2444 +011.6741 +14 215 -19 17:58:30 +48.9817 +013.7233 +12 216 -20 17:58:33 +49.8490 +016.0349 +11 218 -22 17:58:36 +50.9167 +018.7603 +09 220 -23 17:58:38 +52.3632 +022.2844 +06 223 -25 17:58:41 +55.4216 +029.2942 +01 229 -28 Longitude measured positiv to the East.

Occultation Ground Track

 ------------------ Time[UT] | Lat----CENTR----Lon | Alt hh:mm:ss | +DD.dddd  +DDD.dddd | deg ---------------------------------------------- 17:55:26   +52.1318  -074.4738   +05  133  +24 17:55:29   +50.4207  -070.2477   +08  137  +25 17:55:32   +49.2749  -067.2518   +10  139  +25 17:55:34   +48.3785  -064.7877   +12  141  +25 17:55:37   +47.6327  -062.6378   +13  143  +25 17:55:40   +46.9910  -060.7005   +15  144  +25 17:55:43   +46.4272  -058.9186   +16  146  +24 17:55:45   +45.9247  -057.2562   +17  147  +24 17:55:48   +45.4722  -055.6889   +18  149  +24 17:55:51   +45.0617  -054.1993   +19  150  +23 17:55:54   +44.6874  -052.7746   +19  151  +23 17:55:56   +44.3445  -051.4048   +20  152  +23 17:55:59   +44.0295  -050.0821   +21  154  +22 17:56:02   +43.7396  -048.8003   +22  155  +22 17:56:05   +43.4723  -047.5541   +22  156  +21 17:56:07   +43.2257  -046.3394   +23  157  +21 17:56:10   +42.9982  -045.1524   +23  158  +20 17:56:13   +42.7884  -043.9901   +24  159  +20 17:56:16   +42.5952  -042.8499   +24  161  +19 17:56:18   +42.4176  -041.7292   +25  162  +18 17:56:21   +42.2547  -040.6262   +25  163  +18 17:56:24   +42.1057  -039.5389   +26  164  +17 17:56:27   +41.9701  -038.4657   +26  165  +17 17:56:29   +41.8471  -037.4052   +26  166  +16 17:56:32   +41.7365  -036.3560   +27  167  +15 17:56:35   +41.6376  -035.3168   +27  168  +15 17:56:38   +41.5503  -034.2865   +27  169  +14 17:56:40   +41.4741  -033.2640   +27  170  +14 17:56:43   +41.4087  -032.2483   +27  171  +13 17:56:46   +41.3540  -031.2386   +28  172  +12 17:56:49   +41.3097  -030.2338   +28  173  +12 17:56:51   +41.2757  -029.2332   +28  175  +11 17:56:54   +41.2518  -028.2359   +28  176  +10 17:56:57   +41.2380  -027.2411   +28  177  +10 17:57:00   +41.2341  -026.2480   +28  178  +09 17:57:02   +41.2402  -025.2559   +28  179  +08 17:57:05   +41.2562  -024.2640   +28  180  +08 17:57:08   +41.2821  -023.2716   +28  181  +07 17:57:10   +41.3180  -022.2778   +28  182  +06 17:57:13   +41.3639  -021.2819   +28  183  +05 17:57:16   +41.4200  -020.2831   +28  184  +05 17:57:19   +41.4863  -019.2806   +28  185  +04 17:57:21   +41.5631  -018.2735   +27  186  +03 17:57:24   +41.6505  -017.2610   +27  187  +02 17:57:27   +41.7487  -016.2422   +27  188  +02 17:57:30   +41.8581  -015.2160   +27  189  +01 17:57:32   +41.9789  -014.1814   +27  191  +00 17:57:35   +42.1115  -013.1374   +26  192  -01 17:57:38   +42.2563  -012.0827   +26  193  -01 17:57:41   +42.4139  -011.0161   +26  194  -02 17:57:43   +42.5847  -009.9360   +25  195  -03 17:57:46   +42.7694  -008.8409   +25  196  -04 17:57:49   +42.9687  -007.7291   +25  197  -05 17:57:52   +43.1834  -006.5986   +24  198  -06 17:57:54   +43.4146  -005.4472   +24  199  -07 17:57:57   +43.6633  -004.2723   +23  200  -07 17:58:00   +43.9309  -003.0711   +22  202  -08 17:58:03   +44.2188  -001.8401   +22  203  -09 17:58:05   +44.5291  -000.5753   +21  204  -10 17:58:08   +44.8638  +000.7280   +21  205  -11 17:58:11   +45.2257  +002.0755   +20  206  -12 17:58:14   +45.6182  +003.4745   +19  208  -13 17:58:16   +46.0455  +004.9338   +18  209  -14 17:58:19   +46.5130  +006.4650   +17  210  -15 17:58:22   +47.0280  +008.0832   +16  212  -16 17:58:25   +47.6004  +009.8096   +15  213  -18 17:58:27   +48.2444  +011.6741   +14  215  -19 17:58:30   +48.9817  +013.7233   +12  216  -20 17:58:33   +49.8490  +016.0349   +11  218  -22 17:58:36   +50.9167  +018.7603   +09  220  -23 17:58:38   +52.3632  +022.2844   +06  223  -25 17:58:41   +55.4216  +029.2942   +01  229  -28

Longitude measured positiv to the East.

------------------------------------------------------------------------- Azm Sun | Lat----EDGE1----Lon | Lat----EDGE2----Lon deg deg | +DD.dddd +DDD.dddd | +DD.dddd +DDD.dddd --------------------------------------------- +55.6138 -080.6002 +50.0897 -071.5326 +52.3916 -072.9793 +48.8818 -068.3959 +50.8078 -069.0466 +47.9507 -065.8563 +49.7097 -066.1588 +47.1812 -063.6579 +48.8415 -063.7551 +46.5216 -061.6866 +48.1155 -061.6448 +45.9432 -059.8794 +47.4893 -059.7357 +45.4282 -058.1975 +46.9383 -057.9748 +44.9647 -056.6149 +46.4469 -056.3285 +44.5443 -055.1131 +46.0044 -054.7737 +44.1607 -053.6786 +45.6031 -053.2941 +43.8092 -052.3010 +45.2373 -051.8772 +43.4861 -050.9722 +44.9025 -050.5135 +43.1882 -049.6855 +44.5954 -049.1956 +42.9133 -048.4357 +44.3130 -047.9173 +42.6592 -047.2182 +44.0531 -046.6736 +42.4244 -046.0295 +43.8138 -045.4604 +42.2074 -044.8662 +43.5936 -044.2741 +42.0070 -043.7257 +43.3910 -043.1118 +41.8222 -042.6055 +43.2050 -041.9707 +41.6521 -041.5036 +43.0346 -040.8486 +41.4960 -040.4180 +42.8789 -039.7436 +41.3531 -039.3472 +42.7372 -038.6536 +41.2228 -038.2895 +42.6089 -037.5773 +41.1048 -037.2437 +42.4935 -036.5129 +40.9984 -036.2085 +42.3904 -035.4593 +40.9035 -035.1827 +42.2994 -034.4152 +40.8195 -034.1653 +42.2199 -033.3795 +40.7462 -033.1552 +42.1517 -032.3510 +40.6834 -032.1516 +42.0946 -031.3287 +40.6308 -031.1536 +42.0484 -030.3118 +40.5884 -030.1603 +42.0128 -029.2992 +40.5558 -029.1709 +41.9877 -028.2902 +40.5330 -028.1846 +41.9731 -027.2838 +40.5199 -027.2007 +41.9687 -026.2792 +40.5165 -026.2184 +41.9747 -025.2757 +40.5227 -025.2371 +41.9909 -024.2724 +40.5384 -024.2559 +42.0174 -023.2685 +40.5638 -023.2742 +42.0543 -022.2632 +40.5988 -022.2912 +42.1016 -021.2557 +40.6435 -021.3063 +42.1593 -020.2451 +40.6980 -020.3186 +42.2278 -019.2306 +40.7624 -019.3274 +42.3070 -018.2112 +40.8369 -018.3318 +42.3974 -017.1861 +40.9216 -017.3312 +42.4990 -016.1542 +41.0167 -016.3245 +42.6122 -015.1145 +41.1226 -015.3110 +42.7373 -014.0659 +41.2394 -014.2895 +42.8748 -013.0073 +41.3676 -013.2592 +43.0251 -011.9372 +41.5075 -012.2188 +43.1888 -010.8543 +41.6595 -011.1672 +43.3664 -009.7570 +41.8242 -010.1030 +43.5586 -008.6436 +42.0020 -009.0248 +43.7664 -007.5121 +42.1937 -007.9310 +43.9905 -006.3605 +42.4000 -006.8199 +44.2322 -005.1861 +42.6218 -005.6893 +44.4926 -003.9863 +42.8600 -004.5371 +44.7734 -002.7575 +43.1159 -003.3606 +45.0763 -001.4960 +43.3907 -002.1569 +45.4034 -000.1972 +43.6861 -000.9225 +45.7575 +001.1445 +44.0040 +000.3468 +46.1418 +002.5361 +44.3467 +001.6559 +46.5603 +003.9860 +44.7169 +003.0109 +47.0183 +005.5054 +45.1183 +004.4191 +47.5228 +007.1086 +45.5551 +005.8898 +48.0832 +008.8156 +46.0330 +007.4353 +48.7130 +010.6548 +46.5597 +009.0716 +49.4327 +012.6691 +47.1457 +010.8211 +50.2761 +014.9300 +47.8060 +012.7162 +51.3066 +017.5723 +48.5643 +014.8075 +52.6769 +020.9218 +49.4607 +017.1816 +55.1300 +026.5784 +50.5755 +020.0123 +55.1474 +027.3752 +52.1269 +023.7755 Azimuth (Azm) measured from North to East.

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Aladin Lite direct link (has Gaia overlay)

Apply ephem. offset (O-C) in RA & DE and CTU:
CTU: Cross-track uncertainty (zero means: use the nominal prediction value, see event details below). Offsets and CTU all in mas.