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Stellar Occultation by (74146) 1998 QS84 on 2024-09-20 (00:56:56 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] : 6b5866a0-ddb5-11f0-547e-44b269772c7c [observed]

 Occultation Date + Time   : 2024-09-20 at 00:56:56 UT +/- 0.06 min  [1]
 Object Designation        : (74146) 1998 QS84
 Star Designation          : GDR3 0109871864797125120
 Star Coordinates (ICRF)   : RA = 02 57 54.9232, DE = +22 48 00.900  [2]
 Star Magnitudes           : G = 13.77 mag, RP = 12.71 mag, BP = 14.91 mag
 Object Magnitude          : V = 18.9 mag
 Estimated Magnitude Drop  : 5.1 mag
 Estimated Max. Duration   : 1.1 sec
 Speed of the shadow       : 2.9 km/s
 Object Mean Diameter      : 3.2 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.1583 arcs/min @ PA = 209 deg
 Horizontal Parallax       : 5.7220 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 24° (sunlit = 94%), Sun = 129°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.14 path-width (1-sig)
 RUWE and duplicate source : 1.14 mas, dup.src = 1  (0:false, 1:true)

 Ephemeris Reference       : JPL#41
 Note                      : FP:true

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


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