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Stellar Occultation by (24656) 1987 QT7 on 2024-09-17 (19:27:43 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] : 66f24d60-ddb5-11f0-547e-f1bd6dff09da [observed]

 Occultation Date + Time   : 2024-09-17 at 19:27:43 UT +/- 0.0 min  [1]
 Object Designation        : (24656) 1987 QT7
 Star Designation          : GDR3 4070875384467936768
 Star Coordinates (ICRF)   : RA = 18 04 12.3222, DE = -20 47 09.383  [2]
 Star Magnitudes           : G = 11.64 mag, RP = 10.55 mag, BP = 12.88 mag
 Object Magnitude          : V = 19.45 mag
 Estimated Magnitude Drop  : 7.8 mag
 Estimated Max. Duration   : 0.2 sec
 Speed of the shadow       : 14.6 km/s
 Object Mean Diameter      : 3.0 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.6683 arcs/min @ PA = 96 deg
 Horizontal Parallax       : 4.8560 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 80° (sunlit = 100%), Sun = 96°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.13 path-width (1-sig)
 RUWE and duplicate source : 0.94 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#55
 Note                      : FP:true

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


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