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Stellar Occultation by (4077) Asuka on 2026-05-09 (21:51:06 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] : 3a104e90-3419-11f1-6999-62d63fffeda7 [asteroids]

 Occultation Date + Time   : 2026-05-09 at 21:51:06 UT +/- 0.01 min  [1]
 Object Designation        : (4077) Asuka
 Star Designation          : GDR3 0705980305774422656
 Star Coordinates (ICRF)   : RA = 08 43 56.5590, DE = +29 09 12.574  [2]
 Star Magnitudes           : G = 14.34 mag, RP = 13.74 mag, BP = 14.78 mag
 Object Magnitude          : V = 17.29 mag
 Estimated Magnitude Drop  : 3.0 mag
 Estimated Max. Duration   : 0.9 sec
 Speed of the shadow       : 21.5 km/s
 Object Mean Diameter      : 20.1 km  (src: astorb) => apparent = 8 mas
 Apparent Motion           : 0.5283 arcs/min @ PA = 115 deg
 Horizontal Parallax       : 2.6150 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 163° (sunlit = 50%), Sun = 77°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.08 path-width (1-sig)
 RUWE and duplicate source : 0.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#76
 Note                      : FP:true

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


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