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Stellar Occultation by (375) Ursula on 2025-11-19 (19:40:44 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] : bb5d4be0-ddb8-11f0-547e-479429fdc183 [observed]

 Occultation Date + Time   : 2025-11-19 at 19:40:44 UT +/- 0.01 min  [1]
 Object Designation        : (375) Ursula
 Star Designation          : GDR3 6855739261595865472
 Star Coordinates (ICRF)   : RA = 20 32 25.9447, DE = -22 12 13.399  [2]
 Star Magnitudes           : G = 11.74 mag, RP = 11.23 mag, BP = 12.08 mag
 Object Magnitude          : V = 12.96 mag
 Estimated Magnitude Drop  : 1.5 mag
 Estimated Max. Duration   : 3.7 sec
 Speed of the shadow       : 29.7 km/s
 Object Mean Diameter      : 109.5 km  (src: astorb) => apparent = 50 mas
 Apparent Motion           : 0.8083 arcs/min @ PA = 64 deg
 Horizontal Parallax       : 2.9000 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 72° (sunlit = 0%), Sun = 67°
 Cross-track uncertainty   : 2.3 mas = 5 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 0.97 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#107
 Note                      : FP:true

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


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