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Stellar Occultation by (38420) 1999 RV221 on 2026-09-21 (21:32:00 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] : 0eccd620-d9b1-11f1-43f3-7347cef75063 [observed]

 Occultation Date + Time   : 2026-09-21 at 21:32:00 UT +/- 0.02 min  [1]
 Object Designation        : (38420) 1999 RV221
 Star Designation          : GDR3 0171605903645309696
 Star Coordinates (ICRF)   : RA = 04 32 45.1803, DE = +32 05 10.260  [2]
 Star Magnitudes           : G = 12.69 mag, RP = 12.03 mag, BP = 13.17 mag
 Object Magnitude          : V = 19.76 mag
 Estimated Magnitude Drop  : 7.1 mag
 Estimated Max. Duration   : 0.7 sec
 Speed of the shadow       : 7.5 km/s
 Object Mean Diameter      : 5.1 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.2250 arcs/min @ PA = 50 deg
 Horizontal Parallax       : 3.2000 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 129° (sunlit = 77%), Sun = 107°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.12 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL54
 Note                      : FP:true

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


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