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Stellar Occultation by (174898) 2004 BL111 on 2023-10-15 (18:24:53 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] : 29a8de70-ddb4-11f0-547e-4a026fefe675 [observed] Occultation Date + Time : 2023-10-15 at 18:24:53 UT +/- 0.15 min [1] Object Designation : (174898) 2004 BL111 Star Designation : GDR3 6789622397601759232 Star Coordinates (ICRF) : RA = 21 21 28.3139, DE = -28 15 32.426 [2] Star Magnitudes : G = 11.22 mag, RP = 10.53 mag, BP = 11.76 mag Object Magnitude : V = 20.99 mag Estimated Magnitude Drop : 9.8 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 5.1 km/s Object Mean Diameter : 2.2 km (src: astorb) => apparent = 1 mas Apparent Motion : 0.1800 arcs/min @ PA = 56 deg Horizontal Parallax : 3.8030 arcs Dynamical Class : MBA Elongation to Moon & Sun : 100° (sunlit = 1%), Sun = 111° Cross-track uncertainty : 18.3 mas = 30 km = 13.95 path-width (1-sig) RUWE and duplicate source : 1.08 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#28 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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