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Stellar Occultation by (51627) 2001 HK38 on 2025-08-25 (23:34:19 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] : 518268a0-ddb7-11f0-547e-24e0bffb5438 [observed]

 Occultation Date + Time   : 2025-08-25 at 23:34:19 UT +/- 0.1 min  [1]
 Object Designation        : (51627) 2001 HK38
 Star Designation          : GDR3 2777676713214601856
 Star Coordinates (ICRF)   : RA = 00 50 11.3476, DE = +13 49 13.530  [2]
 Star Magnitudes           : G = 14.13 mag, RP = 13.57 mag, BP = 14.53 mag
 Object Magnitude          : V = 18.07 mag
 Estimated Magnitude Drop  : 4.0 mag
 Estimated Max. Duration   : 2.0 sec
 Speed of the shadow       : 2.2 km/s
 Object Mean Diameter      : 4.5 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.1217 arcs/min @ PA = 234 deg
 Horizontal Parallax       : 5.8170 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 166° (sunlit = 8%), Sun = 136°
 Cross-track uncertainty   : 2.3 mas = 2 km = 0.56 path-width (1-sig)
 RUWE and duplicate source : 1.1 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#52
 Note                      : FP:true

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


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