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Stellar Occultation by (31542) 1999 DR3 on 2025-03-28 (02:30:18 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] : b776d550-8b8e-11ef-78cd-92a0dedffb44 [asteroids]

 Occultation Date + Time   : 2025-03-28 at 02:30:18 UT +/- 0.0 min  [1]
 Object Designation        : (31542) 1999 DR3
 Star Designation          : GDR3 3980510376366107136
 Star Coordinates (ICRF)   : RA = 11 31 21.3112, DE = +22 30 07.221  [2]
 Star Magnitudes           : G = 13.98 mag, RP = 13.33 mag, BP = 14.47 mag
 Object Magnitude          : V = 16.81 mag
 Estimated Magnitude Drop  : 2.9 mag
 Estimated Max. Duration   : 1.1 sec
 Object Mean Diameter      : 11.7 km  (src: astorb)
 Orbital Class             : MBA
 Speed of the shadow       : 10.7 km/s
 Elongation to Moon & Sun  : 162° (sunlit = 3%), Sun = 151°
 Cross-track uncertainty   : 1.2 mas = 1 km = 0.15 path-width (1-sig)
 RUWE and duplicate source : 4.05 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#59

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


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