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Stellar Occultation by (186263) 2001 YL44 on 2023-03-31 (19:21:22 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] : 7fa5eb70-ddb3-11f0-547e-13c727ca0219 [observed]

 Occultation Date + Time   : 2023-03-31 at 19:21:22 UT +/- 0.01 min  [1]
 Object Designation        : (186263) 2001 YL44
 Star Designation          : GDR3 3163615705566440064
 Star Coordinates (ICRF)   : RA = 07 28 17.6893, DE = +13 36 15.384  [2]
 Star Magnitudes           : G = 9.03 mag, RP = 8.84 mag, BP = 9.12 mag
 Object Magnitude          : V = 20.86 mag
 Estimated Magnitude Drop  : 11.8 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 7.4 km/s
 Object Mean Diameter      : 3.3 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.2100 arcs/min @ PA = 93 deg
 Horizontal Parallax       : 3.0440 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 23° (sunlit = 75%), Sun = 101°
 Cross-track uncertainty   : 1.3 mas = 2 km = 0.83 path-width (1-sig)
 RUWE and duplicate source : 0.87 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#48
 Note                      : FP:true

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


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