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Stellar Occultation by (43815) 1991 VD4 on 2023-08-13 (21:35:54 UT)

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


Event Details
Occultation UUID [and db] : eb9b66c0-ddb3-11f0-547e-f7dcbecf2b30 [observed] Occultation Date + Time : 2023-08-13 at 21:35:54 UT +/- 0.0 min [1] Object Designation : (43815) 1991 VD4 Star Designation : GDR3 6240843809037736448 Star Coordinates (ICRF) : RA = 15 51 20.9271, DE = -21 00 34.729 [2] Star Magnitudes : G = 13.26 mag, RP = 12.48 mag, BP = 13.9 mag Object Magnitude : V = 18.58 mag Estimated Magnitude Drop : 5.3 mag Estimated Max. Duration : 1.6 sec Speed of the shadow : 8.7 km/s Object Mean Diameter : 13.7 km (src: astorb) => apparent = 5 mas Apparent Motion : 0.1967 arcs/min @ PA = 61 deg Horizontal Parallax : 2.4230 arcs Dynamical Class : MBA Elongation to Moon & Sun : 127° (sunlit = 6%), Sun = 99° Cross-track uncertainty : 0.3 mas = 0 km = 0.06 path-width (1-sig) RUWE and duplicate source : 1.0 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#63 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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