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Stellar Occultation by (437296) 2013 BK40 on 2023-12-23 (23:11:28 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] : 4c9859b0-ddb4-11f0-547e-646b76af29c0 [observed]

 Occultation Date + Time   : 2023-12-23 at 23:11:28 UT +/- 0.08 min  [1]
 Object Designation        : (437296) 2013 BK40
 Star Designation          : GDR3 3354786486620386944
 Star Coordinates (ICRF)   : RA = 06 59 15.6992, DE = +15 27 59.470  [2]
 Star Magnitudes           : G = 11.19 mag, RP = 10.51 mag, BP = 11.72 mag
 Object Magnitude          : V = 20.74 mag
 Estimated Magnitude Drop  : 9.6 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 15.8 km/s
 Object Mean Diameter      : 5.3 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.3350 arcs/min @ PA = 280 deg
 Horizontal Parallax       : 2.2490 arcs
 Dynamical Class           : JTRO
 Elongation to Moon & Sun  : 50° (sunlit = 90%), Sun = 166°
 Cross-track uncertainty   : 25.7 mas = 72 km = 13.75 path-width (1-sig)
 RUWE and duplicate source : 0.84 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#34
 Note                      : FP:true

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


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