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Stellar Occultation by (50000) Quaoar on 2024-07-04 (22:57:20 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] : f5bbeda3-a713-4f7a-9504-c89f149b6d15 [cetnos]

 Occultation Date + Time   : 2024-07-04 at 22:57:20 UT +/- 0.11 min  [1]
 Object Designation        : (50000) Quaoar
 Star Designation          : GDR3 4103264802318239360
 Star Coordinates (ICRF)   : RA = 18 35 10.7006, DE = -14 59 34.937  [2]
 Star Magnitudes           : G = 17.19 mag, RP = 16.16 mag, BP = 17.73 mag
 Object Magnitude          : V = 18.73 mag
 Estimated Magnitude Drop  : 1.8 mag
 Estimated Max. Duration   : 45.7 sec
 Speed of the shadow       : 24.6 km/s
 Object Mean Diameter      : 1125.8 km  (src: CORA+astorb) => apparent = 37 mas
 Apparent Motion           : 0.0483 arcs/min @ PA = 266 deg
 Horizontal Parallax       : 0.2110 arcs
 Dynamical Class           : TNO
 Elongation to Moon & Sun  : 165° (sunlit = 1%), Sun = 170°
 Cross-track uncertainty   : 3.8 mas = 114 km = 0.10 path-width (1-sig)
 RUWE and duplicate source : 1.04 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#45

 Object is a <TNOs are Cool> target !

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


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