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Stellar Occultation by (116557) 2004 BC80 on 2025-11-21 (05:32:47 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] : bd0b22f0-ddb8-11f0-547e-ae9ff6fdd54f [observed]

 Occultation Date + Time   : 2025-11-21 at 05:32:47 UT +/- 0.12 min  [1]
 Object Designation        : (116557) 2004 BC80
 Star Designation          : GDR3 3403652322411491072
 Star Coordinates (ICRF)   : RA = 05 32 51.8891, DE = +21 24 49.937  [2]
 Star Magnitudes           : G = 14.04 mag, RP = 13.0 mag, BP = 14.31 mag
 Object Magnitude          : V = 19.45 mag
 Estimated Magnitude Drop  : 5.4 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 7.8 km/s
 Object Mean Diameter      : 2.6 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.3833 arcs/min @ PA = 265 deg
 Horizontal Parallax       : 5.2320 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 164° (sunlit = 1%), Sun = 155°
 Cross-track uncertainty   : 26.1 mas = 31 km = 12.24 path-width (1-sig)
 RUWE and duplicate source : 17.68 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#40
 Note                      : FP:true

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


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