Cora»OccDetail

Stellar Occultation by (2187) La Silla on 2023-07-08 (21:39:32 UT)

Event Details
Occultation UUID [and db] : c99c6600-ddb3-11f0-547e-18f7defe6248 [observed] Occultation Date + Time : 2023-07-08 at 21:39:32 UT +/- 0.0 min [1] Object Designation : (2187) La Silla Star Designation : GDR3 4157633762547582208 Star Coordinates (ICRF) : RA = 18 19 40.7902, DE = -09 28 02.630 [2] Star Magnitudes : G = 14.67 mag, RP = 13.91 mag, BP = 15.28 mag Object Magnitude : V = 16.88 mag Estimated Magnitude Drop : 2.3 mag Estimated Max. Duration : 0.6 sec Speed of the shadow : 10.7 km/s Object Mean Diameter : 6.4 km (src: astorb) => apparent = 6 mas Apparent Motion : 0.6183 arcs/min @ PA = 244 deg Horizontal Parallax : 6.1500 arcs Dynamical Class : MBA Elongation to Moon & Sun : 87° (sunlit = 63%), Sun = 162° Cross-track uncertainty : 0.2 mas = 0 km = 0.03 path-width (1-sig) RUWE and duplicate source : 1.14 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#65 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and db] : c99c6600-ddb3-11f0-547e-18f7defe6248 [observed] Occultation Date + Time : 2023-07-08 at 21:39:32 UT +/- 0.0 min [1] Object Designation : (2187) La Silla Star Designation : GDR3 4157633762547582208 Star Coordinates (ICRF) : RA = 18 19 40.7902, DE = -09 28 02.630 [2] Star Magnitudes : G = 14.67 mag, RP = 13.91 mag, BP = 15.28 mag Object Magnitude : V = 16.88 mag Estimated Magnitude Drop : 2.3 mag Estimated Max. Duration : 0.6 sec Speed of the shadow : 10.7 km/s Object Mean Diameter : 6.4 km (src: astorb) => apparent = 6 mas Apparent Motion : 0.6183 arcs/min @ PA = 244 deg Horizontal Parallax : 6.1500 arcs Dynamical Class : MBA Elongation to Moon & Sun : 87° (sunlit = 63%), Sun = 162° Cross-track uncertainty : 0.2 mas = 0 km = 0.03 path-width (1-sig) RUWE and duplicate source : 1.14 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#65 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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CTU: Cross-track uncertainty (zero means: use the nominal prediction value, see event details below). Offsets and CTU all in mas.