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Stellar Occultation by (24196) 1999 XG37 on 2025-08-31 (19:15:55 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] : 59c10120-ddb7-11f0-547e-08a2fffdf333 [observed]

 Occultation Date + Time   : 2025-08-31 at 19:15:55 UT +/- 0.03 min  [1]
 Object Designation        : (24196) 1999 XG37
 Star Designation          : GDR3 2674331205843032448
 Star Coordinates (ICRF)   : RA = 21 38 16.7111, DE = -02 35 28.351  [2]
 Star Magnitudes           : G = 13.08 mag, RP = 12.58 mag, BP = 13.42 mag
 Object Magnitude          : V = 17.97 mag
 Estimated Magnitude Drop  : 4.9 mag
 Estimated Max. Duration   : 0.4 sec
 Speed of the shadow       : 10.6 km/s
 Object Mean Diameter      : 3.7 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.6233 arcs/min @ PA = 224 deg
 Horizontal Parallax       : 6.2490 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 73° (sunlit = 55%), Sun = 163°
 Cross-track uncertainty   : 1.7 mas = 1 km = 0.47 path-width (1-sig)
 RUWE and duplicate source : 0.92 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#49
 Note                      : FP:true

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


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