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Stellar Occultation by (25307) 1998 XU77 on 2023-09-05 (20:52:43 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] : 2da4eb40-ddb4-11f0-547e-3096ffbed921 [observed]

 Occultation Date + Time   : 2023-09-05 at 20:52:43 UT +/- 0.01 min  [1]
 Object Designation        : (25307) 1998 XU77
 Star Designation          : GDR3 4193462001733379328
 Star Coordinates (ICRF)   : RA = 19 49 11.3937, DE = -10 10 20.487  [2]
 Star Magnitudes           : G = 13.74 mag, RP = 13.22 mag, BP = 14.08 mag
 Object Magnitude          : V = 18.56 mag
 Estimated Magnitude Drop  : 4.8 mag
 Estimated Max. Duration   : 1.4 sec
 Speed of the shadow       : 5.1 km/s
 Object Mean Diameter      : 6.9 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.1800 arcs/min @ PA = 230 deg
 Horizontal Parallax       : 3.7610 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 122° (sunlit = 61%), Sun = 133°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.07 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL63
 Note                      : FP:true

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


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