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Stellar Occultation by (10172) Humphreys on 2023-05-31 (20:55:17 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] : a5c2d8e0-ddb3-11f0-547e-3b2f67f753c3 [observed]

 Occultation Date + Time   : 2023-05-31 at 20:55:17 UT +/- 0.0 min  [1]
 Object Designation        : (10172) Humphreys
 Star Designation          : GDR3 6041825435547326848
 Star Coordinates (ICRF)   : RA = 16 10 24.1753, DE = -28 34 10.540  [2]
 Star Magnitudes           : G = 10.53 mag, RP = 9.28 mag, BP = 12.24 mag
 Object Magnitude          : V = 17.31 mag
 Estimated Magnitude Drop  : 6.8 mag
 Estimated Max. Duration   : 0.6 sec
 Speed of the shadow       : 10.9 km/s
 Object Mean Diameter      : 6.0 km  (src: astorb) => apparent = 5 mas
 Apparent Motion           : 0.5450 arcs/min @ PA = 276 deg
 Horizontal Parallax       : 5.3340 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 38° (sunlit = 87%), Sun = 171°
 Cross-track uncertainty   : 0.5 mas = 0 km = 0.10 path-width (1-sig)
 RUWE and duplicate source : 1.11 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#60
 Note                      : FP:true

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


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