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Stellar Occultation by (16831) 1997 WM21 on 2024-12-27 (03:31:35 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] : d5d2dab0-ddb5-11f0-547e-4ab8ffffbd21 [observed]

 Occultation Date + Time   : 2024-12-27 at 03:31:35 UT +/- 0.01 min  [1]
 Object Designation        : (16831) 1997 WM21
 Star Designation          : GDR3 3357462693623535488
 Star Coordinates (ICRF)   : RA = 06 45 36.6064, DE = +14 55 17.708  [2]
 Star Magnitudes           : G = 12.85 mag, RP = 12.32 mag, BP = 13.21 mag
 Object Magnitude          : V = 15.92 mag
 Estimated Magnitude Drop  : 3.1 mag
 Estimated Max. Duration   : 0.7 sec
 Speed of the shadow       : 7.9 km/s
 Object Mean Diameter      : 5.3 km  (src: astorb) => apparent = 7 mas
 Apparent Motion           : 0.6633 arcs/min @ PA = 261 deg
 Horizontal Parallax       : 8.8630 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 129° (sunlit = 14%), Sun = 170°
 Cross-track uncertainty   : 0.7 mas = 0 km = 0.10 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL56
 Note                      : FP:true

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


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