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Stellar Occultation by (77823) 2001 QS184 on 2023-09-20 (18:12:52 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] : 0e485ac0-ddb4-11f0-547e-d27814fecf66 [observed]

 Occultation Date + Time   : 2023-09-20 at 18:12:52 UT +/- 0.0 min  [1]
 Object Designation        : (77823) 2001 QS184
 Star Designation          : GDR3 4081138264667029504
 Star Coordinates (ICRF)   : RA = 19 10 03.8688, DE = -22 09 14.524  [2]
 Star Magnitudes           : G = 12.95 mag, RP = 12.23 mag, BP = 13.51 mag
 Object Magnitude          : V = 19.03 mag
 Estimated Magnitude Drop  : 6.1 mag
 Estimated Max. Duration   : 0.7 sec
 Speed of the shadow       : 8.8 km/s
 Object Mean Diameter      : 6.4 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.2833 arcs/min @ PA = 38 deg
 Horizontal Parallax       : 3.4270 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 44° (sunlit = 29%), Sun = 109°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.12 path-width (1-sig)
 RUWE and duplicate source : 1.05 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL53
 Note                      : FP:true

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


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