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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       : JPL63
 Note                      : FP:true

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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