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Stellar Occultation by (21541) Friskop on 2023-06-23 (20:46:02 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] : bc3575b0-ddb3-11f0-547e-c5197f37f861 [observed]

 Occultation Date + Time   : 2023-06-23 at 20:46:02 UT +/- 0.0 min  [1]
 Object Designation        : (21541) Friskop
 Star Designation          : GDR3 4155413814250528128
 Star Coordinates (ICRF)   : RA = 18 42 16.4384, DE = -09 03 09.160  [2]
 Star Magnitudes           : G = 4.61 mag, RP = 4.31 mag, BP = 4.82 mag
 Object Magnitude          : V = 18.23 mag
 Estimated Magnitude Drop  : 13.6 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 11.0 km/s
 Object Mean Diameter      : 5.1 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.4900 arcs/min @ PA = 266 deg
 Horizontal Parallax       : 4.7450 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 123° (sunlit = 27%), Sun = 164°
 Cross-track uncertainty   : 0.9 mas = 1 km = 0.24 path-width (1-sig)
 RUWE and duplicate source : 0.76 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#50
 Note                      : FP:true

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


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