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Stellar Occultation by (157043) 2003 ST44 on 2025-08-11 (20:43:38 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] : 40068c50-ddb7-11f0-547e-c7e3beef8f84 [observed]

 Occultation Date + Time   : 2025-08-11 at 20:43:38 UT +/- 0.13 min  [1]
 Object Designation        : (157043) 2003 ST44
 Star Designation          : GDR3 4184214421758958848
 Star Coordinates (ICRF)   : RA = 19 13 56.0036, DE = -15 46 56.857  [2]
 Star Magnitudes           : G = 12.36 mag, RP = 11.79 mag, BP = 12.74 mag
 Object Magnitude          : V = 18.93 mag
 Estimated Magnitude Drop  : 6.6 mag
 Estimated Max. Duration   : 0.6 sec
 Speed of the shadow       : 6.1 km/s
 Object Mean Diameter      : 3.8 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.2767 arcs/min @ PA = 256 deg
 Horizontal Parallax       : 4.8620 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 64° (sunlit = 92%), Sun = 148°
 Cross-track uncertainty   : 24.3 mas = 31 km = 8.39 path-width (1-sig)
 RUWE and duplicate source : 3.86 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#35
 Note                      : FP:true

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


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