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Stellar Occultation by (49488) 1999 BZ23 on 2025-09-20 (19:17:09 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] : 76c7bac0-ddb7-11f0-547e-ec77e7e83d6a [observed]

 Occultation Date + Time   : 2025-09-20 at 19:17:09 UT +/- 0.0 min  [1]
 Object Designation        : (49488) 1999 BZ23
 Star Designation          : GDR3 4101447928081327872
 Star Coordinates (ICRF)   : RA = 18 57 15.2117, DE = -14 37 55.079  [2]
 Star Magnitudes           : G = 14.63 mag, RP = 13.68 mag, BP = 15.5 mag
 Object Magnitude          : V = 18.92 mag
 Estimated Magnitude Drop  : 4.3 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 10.0 km/s
 Object Mean Diameter      : 4.9 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.3967 arcs/min @ PA = 87 deg
 Horizontal Parallax       : 4.2140 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 117° (sunlit = 1%), Sun = 106°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.12 path-width (1-sig)
 RUWE and duplicate source : 0.88 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#57
 Note                      : FP:true

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


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