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Stellar Occultation by (52621) 1997 VW4 on 2023-04-04 (20:56:00 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] : 83b02910-ddb3-11f0-547e-ff96f77fcee7 [observed]

 Occultation Date + Time   : 2023-04-04 at 20:56:00 UT +/- 0.0 min  [1]
 Object Designation        : (52621) 1997 VW4
 Star Designation          : GDR3 0160605118011058432
 Star Coordinates (ICRF)   : RA = 04 59 53.4367, DE = +32 26 50.509  [2]
 Star Magnitudes           : G = 10.93 mag, RP = 9.73 mag, BP = 12.52 mag
 Object Magnitude          : V = 18.88 mag
 Estimated Magnitude Drop  : 8.0 mag
 Estimated Max. Duration   : 0.2 sec
 Speed of the shadow       : 29.8 km/s
 Object Mean Diameter      : 6.4 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.8883 arcs/min @ PA = 85 deg
 Horizontal Parallax       : 3.1710 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 102° (sunlit = 98%), Sun = 63°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.09 path-width (1-sig)
 RUWE and duplicate source : 0.93 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#60
 Note                      : FP:true

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


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