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Stellar Occultation by (167597) 2004 BT116 on 2025-12-31 (21:16:12 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] : daba2f40-d997-11f1-43f3-7bcd2af55191 [observed]

 Occultation Date + Time   : 2025-12-31 at 21:16:12 UT +/- 0.01 min  [1]
 Object Designation        : (167597) 2004 BT116
 Star Designation          : GDR3 3294077016512414208
 Star Coordinates (ICRF)   : RA = 04 44 46.3641, DE = +11 03 21.336  [2]
 Star Magnitudes           : G = 10.85 mag, RP = 10.42 mag, BP = 11.12 mag
 Object Magnitude          : V = 19.32 mag
 Estimated Magnitude Drop  : 8.5 mag
 Estimated Max. Duration   : 0.4 sec
 Speed of the shadow       : 14.8 km/s
 Object Mean Diameter      : 5.1 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.4950 arcs/min @ PA = 297 deg
 Horizontal Parallax       : 3.5650 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 17° (sunlit = 91%), Sun = 149°
 Cross-track uncertainty   : 1.7 mas = 3 km = 0.60 path-width (1-sig)
 RUWE and duplicate source : 1.15 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL50
 Note                      : FP:true

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


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