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Stellar Occultation by (4571) Grumiaux on 2023-04-18 (00:04:43 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] : 8d3b17b0-ddb3-11f0-547e-7cacbdfd5703 [observed]

 Occultation Date + Time   : 2023-04-18 at 00:04:43 UT +/- 0.0 min  [1]
 Object Designation        : (4571) Grumiaux
 Star Designation          : GDR3 6306998395722536192
 Star Coordinates (ICRF)   : RA = 15 01 51.0523, DE = -15 22 57.408  [2]
 Star Magnitudes           : G = 11.56 mag, RP = 11.09 mag, BP = 11.86 mag
 Object Magnitude          : V = 17.5 mag
 Estimated Magnitude Drop  : 5.9 mag
 Estimated Max. Duration   : 0.9 sec
 Speed of the shadow       : 12.0 km/s
 Object Mean Diameter      : 10.9 km  (src: astorb) => apparent = 6 mas
 Apparent Motion           : 0.4133 arcs/min @ PA = 289 deg
 Horizontal Parallax       : 3.6470 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 132° (sunlit = 6%), Sun = 160°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 1.03 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#70
 Note                      : FP:true

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


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