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Stellar Occultation by (110759) 2001 UR18 on 2023-09-16 (01:34:15 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] : 0b566af0-ddb4-11f0-547e-6b65ed4f694c [observed]

 Occultation Date + Time   : 2023-09-16 at 01:34:15 UT +/- 0.02 min  [1]
 Object Designation        : (110759) 2001 UR18
 Star Designation          : GDR3 0057515320107755264
 Star Coordinates (ICRF)   : RA = 03 25 40.0473, DE = +18 53 41.035  [2]
 Star Magnitudes           : G = 11.08 mag, RP = 10.32 mag, BP = 11.71 mag
 Object Magnitude          : V = 19.18 mag
 Estimated Magnitude Drop  : 8.1 mag
 Estimated Max. Duration   : 0.4 sec
 Speed of the shadow       : 6.8 km/s
 Object Mean Diameter      : 2.8 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.3700 arcs/min @ PA = 32 deg
 Horizontal Parallax       : 5.7490 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 130° (sunlit = 1%), Sun = 119°
 Cross-track uncertainty   : 2.0 mas = 2 km = 0.79 path-width (1-sig)
 RUWE and duplicate source : 0.88 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#38
 Note                      : FP:true

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


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