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Stellar Occultation by (9338) 1991 FL4 on 2023-04-02 (22:44:34 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] : 80d3e420-ddb3-11f0-547e-511097fddce0 [observed]

 Occultation Date + Time   : 2023-04-02 at 22:44:34 UT +/- 0.0 min  [1]
 Object Designation        : (9338) 1991 FL4
 Star Designation          : GDR3 3148556725593688320
 Star Coordinates (ICRF)   : RA = 07 42 25.4721, DE = +09 19 51.777  [2]
 Star Magnitudes           : G = 12.93 mag, RP = 12.33 mag, BP = 13.37 mag
 Object Magnitude          : V = 18.79 mag
 Estimated Magnitude Drop  : 5.9 mag
 Estimated Max. Duration   : 1.2 sec
 Speed of the shadow       : 9.3 km/s
 Object Mean Diameter      : 10.7 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.2333 arcs/min @ PA = 49 deg
 Horizontal Parallax       : 2.6640 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 43° (sunlit = 90%), Sun = 103°
 Cross-track uncertainty   : 0.1 mas = 0 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.01 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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