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Stellar Occultation by (31542) 1999 DR3 on 2026-05-25 (01:21:50 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] : 03bb3220-344a-11f1-6999-8ef2e6ffbaa6 [asteroids]

 Occultation Date + Time   : 2026-05-25 at 01:21:50 UT +/- 0.01 min  [1]
 Object Designation        : (31542) 1999 DR3
 Star Designation          : GDR3 4067633852393875968
 Star Coordinates (ICRF)   : RA = 17 53 06.0133, DE = -24 45 51.273  [2]
 Star Magnitudes           : G = 12.98 mag, RP = 12.04 mag, BP = 13.89 mag
 Object Magnitude          : V = 16.58 mag
 Estimated Magnitude Drop  : 3.6 mag
 Estimated Max. Duration   : 1.2 sec
 Speed of the shadow       : 10.0 km/s
 Object Mean Diameter      : 11.9 km  (src: astorb) => apparent = 9 mas
 Apparent Motion           : 0.4333 arcs/min @ PA = 247 deg
 Horizontal Parallax       : 4.6040 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 95° (sunlit = 67%), Sun = 155°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 0.99 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#68
 Note                      : FP:true

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


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