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Stellar Occultation by (197007) 2003 UB99 on 2023-06-04 (21:22:53 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] : b1611720-ddb3-11f0-547e-7eaabc541cf7 [observed]

 Occultation Date + Time   : 2023-06-04 at 21:22:53 UT +/- 0.01 min  [1]
 Object Designation        : (197007) 2003 UB99
 Star Designation          : GDR3 6231369244320408192
 Star Coordinates (ICRF)   : RA = 15 03 32.1217, DE = -22 49 42.860  [2]
 Star Magnitudes           : G = 12.75 mag, RP = 12.09 mag, BP = 13.25 mag
 Object Magnitude          : V = 19.34 mag
 Estimated Magnitude Drop  : 6.6 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 12.3 km/s
 Object Mean Diameter      : 3.8 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.4883 arcs/min @ PA = 262 deg
 Horizontal Parallax       : 4.2040 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 34° (sunlit = 99%), Sun = 155°
 Cross-track uncertainty   : 2.7 mas = 4 km = 1.08 path-width (1-sig)
 RUWE and duplicate source : 1.14 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#41
 Note                      : FP:true

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


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