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Stellar Occultation by (541) Deborah on 2026-05-23 (21:24:30 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] : 9dec9020-33cb-11f1-6999-e26bd89f2de3 [asteroids]

 Occultation Date + Time   : 2026-05-23 at 21:24:30 UT +/- 0.01 min  [1]
 Object Designation        : (541) Deborah
 Star Designation          : GDR3 6251157846580425472
 Star Coordinates (ICRF)   : RA = 15 25 06.1461, DE = -23 37 21.771  [2]
 Star Magnitudes           : G = 12.4 mag, RP = 11.85 mag, BP = 12.74 mag
 Object Magnitude          : V = 13.84 mag
 Estimated Magnitude Drop  : 1.7 mag
 Estimated Max. Duration   : 5.2 sec
 Speed of the shadow       : 10.9 km/s
 Object Mean Diameter      : 57.0 km  (src: astorb) => apparent = 47 mas
 Apparent Motion           : 0.5367 arcs/min @ PA = 294 deg
 Horizontal Parallax       : 5.2380 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 77° (sunlit = 55%), Sun = 171°
 Cross-track uncertainty   : 0.8 mas = 0 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.18 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#76
 Note                      : FP:true

 Object is a <Gaia mass determination> target !

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


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