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Stellar Occultation by (128778) 2004 RP200 on 2025-09-20 (19:52:13 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] : 770d0120-ddb7-11f0-547e-ecc0ecb39ec9 [observed]

 Occultation Date + Time   : 2025-09-20 at 19:52:13 UT +/- 0.01 min  [1]
 Object Designation        : (128778) 2004 RP200
 Star Designation          : GDR3 4253850989959853440
 Star Coordinates (ICRF)   : RA = 18 59 54.4704, DE = -05 53 14.272  [2]
 Star Magnitudes           : G = 12.54 mag, RP = 11.73 mag, BP = 13.23 mag
 Object Magnitude          : V = 19.06 mag
 Estimated Magnitude Drop  : 6.5 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 8.0 km/s
 Object Mean Diameter      : 4.0 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.3533 arcs/min @ PA = 101 deg
 Horizontal Parallax       : 4.6670 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 118° (sunlit = 1%), Sun = 107°
 Cross-track uncertainty   : 1.7 mas = 2 km = 0.58 path-width (1-sig)
 RUWE and duplicate source : 0.92 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#39
 Note                      : FP:true

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


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