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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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