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Stellar Occultation by (66039) 1998 QS74 on 2023-12-04 (05:25:45 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] : 4224dfd0-ddb4-11f0-547e-e2c4eff3a106 [observed]

 Occultation Date + Time   : 2023-12-04 at 05:25:45 UT +/- 0.0 min  [1]
 Object Designation        : (66039) 1998 QS74
 Star Designation          : GDR3 0236706337861821184
 Star Coordinates (ICRF)   : RA = 03 36 08.9718, DE = +40 36 58.864  [2]
 Star Magnitudes           : G = 10.92 mag, RP = 10.43 mag, BP = 11.23 mag
 Object Magnitude          : V = 18.27 mag
 Estimated Magnitude Drop  : 7.4 mag
 Estimated Max. Duration   : 0.4 sec
 Speed of the shadow       : 13.1 km/s
 Object Mean Diameter      : 5.5 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.5567 arcs/min @ PA = 236 deg
 Horizontal Parallax       : 4.5040 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 88° (sunlit = 60%), Sun = 157°
 Cross-track uncertainty   : 0.5 mas = 0 km = 0.13 path-width (1-sig)
 RUWE and duplicate source : 3.22 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#48
 Note                      : FP:true

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


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