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Stellar Occultation by (242497) 2004 XL20 on 2025-11-10 (22:14:13 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] : b27e7bc0-ddb8-11f0-547e-dd977affbe0f [observed]

 Occultation Date + Time   : 2025-11-10 at 22:14:13 UT +/- 0.13 min  [1]
 Object Designation        : (242497) 2004 XL20
 Star Designation          : GDR3 3403633561993433600
 Star Coordinates (ICRF)   : RA = 05 33 51.5524, DE = +21 12 47.988  [2]
 Star Magnitudes           : G = 9.45 mag, RP = 8.53 mag, BP = 10.34 mag
 Object Magnitude          : V = 20.18 mag
 Estimated Magnitude Drop  : 10.7 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 7.9 km/s
 Object Mean Diameter      : 2.6 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.3183 arcs/min @ PA = 288 deg
 Horizontal Parallax       : 4.2830 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 39° (sunlit = 64%), Sun = 145°
 Cross-track uncertainty   : 23.3 mas = 34 km = 13.35 path-width (1-sig)
 RUWE and duplicate source : 1.2 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL34
 Note                      : FP:true

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


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