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Stellar Occultation by (471318) 2011 JF31 on 2025-05-23 (05:53:21 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] : a029e000-d2b0-11ee-7567-3079f3f75b52 [cetnos]

 Occultation Date + Time   : 2025-05-23 at 05:53:21 UT +/- 1.51 min  [1]
 Object Designation        : (471318) 2011 JF31
 Star Designation          : GDR3 6249263869081572224
 Star Coordinates (ICRF)   : RA = 16 06 04.5675, DE = -17 32 07.652  [2]
 Star Magnitudes           : G = 14.56 mag, RP = 13.85 mag, BP = 15.11 mag
 Object Magnitude          : V = 21.72 mag
 Estimated Magnitude Drop  : 7.2 mag
 Estimated Max. Duration   : 11.2 sec
 Object Mean Diameter      : 286.7 km  (src: CORA+astorb)
 Orbital Class             : TNO
 Speed of the shadow       : 25.6 km/s
 Elongation to Moon & Sun  : 125° (sunlit = 21%), Sun = 177°
 Cross-track uncertainty   : 38.0 mas = 1159 km = 4.04 path-width (1-sig)
 RUWE and duplicate source : 0.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#16 (24-02-23)

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


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