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Stellar Occultation by (10305) Grignard on 2023-04-30 (20:50:08 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] : 935374d0-ddb3-11f0-547e-75c0fefa5be9 [observed]

 Occultation Date + Time   : 2023-04-30 at 20:50:08 UT +/- 0.0 min  [1]
 Object Designation        : (10305) Grignard
 Star Designation          : GDR3 0676016208735826560
 Star Coordinates (ICRF)   : RA = 08 15 38.3043, DE = +21 18 13.387  [2]
 Star Magnitudes           : G = 10.91 mag, RP = 10.51 mag, BP = 11.15 mag
 Object Magnitude          : V = 19.32 mag
 Estimated Magnitude Drop  : 8.4 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 20.0 km/s
 Object Mean Diameter      : 5.9 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.5900 arcs/min @ PA = 100 deg
 Horizontal Parallax       : 3.1370 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 42° (sunlit = 77%), Sun = 81°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.10 path-width (1-sig)
 RUWE and duplicate source : 0.87 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#63
 Note                      : FP:true

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


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