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Stellar Occultation by (55057) 2001 QJ70 on 2025-10-18 (01:22:11 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] : 97cbeb50-ddb8-11f0-547e-d6dea7ef0c79 [observed]

 Occultation Date + Time   : 2025-10-18 at 01:22:11 UT +/- 0.02 min  [1]
 Object Designation        : (55057) 2001 QJ70
 Star Designation          : GDR3 3452689956891849600
 Star Coordinates (ICRF)   : RA = 06 17 51.0600, DE = +35 19 41.102  [2]
 Star Magnitudes           : G = 9.02 mag, RP = 8.7 mag, BP = 9.21 mag
 Object Magnitude          : V = 18.81 mag
 Estimated Magnitude Drop  : 9.8 mag
 Estimated Max. Duration   : 1.1 sec
 Speed of the shadow       : 6.1 km/s
 Object Mean Diameter      : 6.8 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.2017 arcs/min @ PA = 63 deg
 Horizontal Parallax       : 3.5470 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 73° (sunlit = 11%), Sun = 111°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.19 path-width (1-sig)
 RUWE and duplicate source : 0.99 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#61
 Note                      : FP:true

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


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