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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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