Cora»OccDetail

Stellar Occultation by (171) Ophelia on 2023-07-21 (21:16:12 UT)

Event Details
Occultation UUID [and db] : 4b4fa9e0-ddb0-11f0-547e-2421f5fe3ccf [observed] Occultation Date + Time : 2023-07-21 at 21:16:12 UT +/- 0.01 min [1] Object Designation : (171) Ophelia Star Designation : GDR3 4116871911616480768 Star Coordinates (ICRF) : RA = 17 42 16.3510, DE = -23 04 30.255 [2] Star Magnitudes : G = 14.28 mag, RP = 13.19 mag, BP = 15.47 mag Object Magnitude : V = 13.71 mag Estimated Magnitude Drop : 0.5 mag Estimated Max. Duration : 13.4 sec Speed of the shadow : 8.7 km/s Object Mean Diameter : 116.7 km (src: astorb) => apparent = 67 mas Apparent Motion : 0.3017 arcs/min @ PA = 267 deg Horizontal Parallax : 3.6830 arcs Dynamical Class : MBA Elongation to Moon & Sun : 102° (sunlit = 15%), Sun = 147° Cross-track uncertainty : 0.7 mas = 1 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.93 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#157 Note : FP:true Object is a <Gaia mass determination> target ! [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and db] : 4b4fa9e0-ddb0-11f0-547e-2421f5fe3ccf [observed] Occultation Date + Time : 2023-07-21 at 21:16:12 UT +/- 0.01 min [1] Object Designation : (171) Ophelia Star Designation : GDR3 4116871911616480768 Star Coordinates (ICRF) : RA = 17 42 16.3510, DE = -23 04 30.255 [2] Star Magnitudes : G = 14.28 mag, RP = 13.19 mag, BP = 15.47 mag Object Magnitude : V = 13.71 mag Estimated Magnitude Drop : 0.5 mag Estimated Max. Duration : 13.4 sec Speed of the shadow : 8.7 km/s Object Mean Diameter : 116.7 km (src: astorb) => apparent = 67 mas Apparent Motion : 0.3017 arcs/min @ PA = 267 deg Horizontal Parallax : 3.6830 arcs Dynamical Class : MBA Elongation to Moon & Sun : 102° (sunlit = 15%), Sun = 147° Cross-track uncertainty : 0.7 mas = 1 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.93 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#157 Note : FP:true Object is a <Gaia mass determination> target ! [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

(If error 404: link not valid which means no data available)

Interactive map

Download KMZ

Occultation Ground Track
------------------ Time[UT] \| Lat----CENTR----Lon \| Alt hh:mm:ss \| +DD.dddd +DDD.dddd \| deg ---------------------------------------------- 21:13:02 +59.3783 +031.0481 +05 201 -10 21:13:16 +57.4490 +027.4238 +08 198 -11 21:13:31 +56.1168 +024.5043 +10 196 -12 21:13:46 +55.0863 +021.9304 +11 193 -12 21:14:01 +54.2502 +019.5686 +12 191 -13 21:14:16 +53.5550 +017.3510 +13 189 -13 21:14:30 +52.9698 +015.2369 +14 187 -13 21:14:45 +52.4752 +013.1993 +14 185 -13 21:15:00 +52.0579 +011.2190 +15 184 -12 21:15:15 +51.7090 +009.2811 +15 182 -12 21:15:29 +51.4219 +007.3741 +16 180 -12 21:15:44 +51.1922 +005.4878 +16 178 -11 21:15:59 +51.0169 +003.6135 +16 177 -11 21:16:14 +50.8941 +001.7432 +16 175 -10 21:16:28 +50.8232 -000.1310 +16 173 -10 21:16:43 +50.8044 -002.0171 +16 171 -09 21:16:58 +50.8388 -003.9234 +15 170 -08 21:17:13 +50.9291 -005.8594 +15 168 -07 21:17:27 +51.0789 -007.8360 +15 166 -06 21:17:42 +51.2940 -009.8662 +14 164 -05 21:17:57 +51.5826 -011.9669 +14 162 -04 21:18:12 +51.9568 -014.1605 +13 160 -03 21:18:26 +52.4346 -016.4792 +12 158 -01 21:18:41 +53.0455 -018.9722 +11 156 +00 21:18:56 +53.8410 -021.7244 +09 154 +02 21:19:11 +54.9285 -024.9097 +08 151 +04 21:19:25 +56.6282 -029.0399 +05 148 +07 Longitude measured positiv to the East.

Occultation Ground Track

 ------------------ Time[UT] | Lat----CENTR----Lon | Alt hh:mm:ss | +DD.dddd  +DDD.dddd | deg ---------------------------------------------- 21:13:02   +59.3783  +031.0481   +05  201  -10 21:13:16   +57.4490  +027.4238   +08  198  -11 21:13:31   +56.1168  +024.5043   +10  196  -12 21:13:46   +55.0863  +021.9304   +11  193  -12 21:14:01   +54.2502  +019.5686   +12  191  -13 21:14:16   +53.5550  +017.3510   +13  189  -13 21:14:30   +52.9698  +015.2369   +14  187  -13 21:14:45   +52.4752  +013.1993   +14  185  -13 21:15:00   +52.0579  +011.2190   +15  184  -12 21:15:15   +51.7090  +009.2811   +15  182  -12 21:15:29   +51.4219  +007.3741   +16  180  -12 21:15:44   +51.1922  +005.4878   +16  178  -11 21:15:59   +51.0169  +003.6135   +16  177  -11 21:16:14   +50.8941  +001.7432   +16  175  -10 21:16:28   +50.8232  -000.1310   +16  173  -10 21:16:43   +50.8044  -002.0171   +16  171  -09 21:16:58   +50.8388  -003.9234   +15  170  -08 21:17:13   +50.9291  -005.8594   +15  168  -07 21:17:27   +51.0789  -007.8360   +15  166  -06 21:17:42   +51.2940  -009.8662   +14  164  -05 21:17:57   +51.5826  -011.9669   +14  162  -04 21:18:12   +51.9568  -014.1605   +13  160  -03 21:18:26   +52.4346  -016.4792   +12  158  -01 21:18:41   +53.0455  -018.9722   +11  156  +00 21:18:56   +53.8410  -021.7244   +09  154  +02 21:19:11   +54.9285  -024.9097   +08  151  +04 21:19:25   +56.6282  -029.0399   +05  148  +07

Longitude measured positiv to the East.

------------------------------------------------------------------------- Azm Sun | Lat----EDGE1----Lon | Lat----EDGE2----Lon deg deg | +DD.dddd +DDD.dddd | +DD.dddd +DDD.dddd --------------------------------------------- +55.6953 +028.7829 +65.0048 +035.3932 +54.4875 +025.9932 +62.8075 +030.9893 +53.5198 +023.4962 +59.7316 +026.2625 +52.7166 +021.1901 +58.1169 +023.0772 +52.0370 +019.0186 +56.9571 +020.3688 +51.4558 +016.9466 +56.0527 +017.9178 +50.9565 +014.9499 +55.3215 +015.6304 +50.5277 +013.0111 +54.7205 +013.4553 +50.1613 +011.1168 +54.2243 +011.3599 +49.8513 +009.2562 +53.8164 +009.3217 +49.5935 +007.4205 +53.4861 +007.3239 +49.3847 +005.6017 +53.2261 +005.3528 +49.2229 +003.7930 +53.0317 +003.3967 +49.1066 +001.9877 +52.9002 +001.4452 +49.0355 +000.1795 +52.8305 -000.5119 +49.0095 -001.6380 +52.8229 -002.4850 +49.0296 -003.4716 +52.8797 -004.4851 +49.0975 -005.3286 +53.0046 -006.5252 +49.2156 -007.2173 +53.2041 -008.6207 +49.3879 -009.1474 +53.4881 -010.7915 +49.6194 -011.1307 +53.8715 -013.0651 +49.9176 -013.1823 +54.3785 -015.4820 +50.2930 -015.3217 +55.0505 -018.1084 +50.7607 -017.5768 +55.9689 -021.0709 +51.3444 -019.9886 +57.3432 -024.6881 +52.0832 -022.6241 +60.8371 -031.4414 +53.0513 -025.6084 +60.7075 -033.3426 Azimuth (Azm) measured from North to East.

Aladin Sky Atlas

Loading sky atlas…

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.